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Diffstat (limited to 'src/gui/kernel/qapplication.cpp')
| -rw-r--r-- | src/gui/kernel/qapplication.cpp | 6139 |
1 files changed, 0 insertions, 6139 deletions
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp deleted file mode 100644 index 4096bf378b..0000000000 --- a/src/gui/kernel/qapplication.cpp +++ /dev/null @@ -1,6139 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qplatformdefs.h" -#include "qabstracteventdispatcher.h" -#include "qaccessible.h" -#include "qapplication.h" -#include "qclipboard.h" -#include "qcursor.h" -#include "qdesktopwidget.h" -#include "qdir.h" -#include "qevent.h" -#include "qfile.h" -#include "qfileinfo.h" -#include "qgraphicsscene.h" -#include "qhash.h" -#include "qset.h" -#include "qlayout.h" -#include "qsessionmanager.h" -#include "qstyle.h" -#include "qstylefactory.h" -#include "qtextcodec.h" -#include "qtranslator.h" -#include "qvariant.h" -#include "qwidget.h" -#include "qdnd_p.h" -#include "qcolormap.h" -#include "qdebug.h" -#include "private/qgraphicssystemfactory_p.h" -#include "private/qgraphicssystem_p.h" -#include "private/qstylesheetstyle_p.h" -#include "private/qstyle_p.h" -#include "qmessagebox.h" -#include <QtGui/qgraphicsproxywidget.h> - -#ifdef QT_GRAPHICSSYSTEM_RUNTIME -#include "private/qgraphicssystem_runtime_p.h" -#endif - -#include "qinputcontext.h" -#include "qkeymapper_p.h" - -#ifdef Q_WS_X11 -#include <private/qt_x11_p.h> -#endif - -#if defined(Q_WS_X11) || defined(Q_OS_SYMBIAN) -#include "qinputcontextfactory.h" -#endif - -#include "qguiplatformplugin_p.h" - -#include <qthread.h> -#include <private/qthread_p.h> - -#include <private/qfont_p.h> - -#include <stdlib.h> - -#if defined(Q_WS_X11) && !defined(QT_NO_EGL) -#include <link.h> -#endif - -#include "qapplication_p.h" -#include "qevent_p.h" -#include "qwidget_p.h" - -#include "qapplication.h" - -#include "qgesture.h" -#include "private/qgesturemanager_p.h" - -#ifndef QT_NO_LIBRARY -#include "qlibrary.h" -#endif - -#ifdef Q_WS_WINCE -#include "qdatetime.h" -#include "qguifunctions_wince.h" -extern bool qt_wince_is_smartphone(); //qguifunctions_wince.cpp -extern bool qt_wince_is_mobile(); //qguifunctions_wince.cpp -extern bool qt_wince_is_pocket_pc(); //qguifunctions_wince.cpp -#endif - -#include "qdatetime.h" - -#ifdef QT_MAC_USE_COCOA -#include <private/qt_cocoa_helpers_mac_p.h> -#endif - -//#define ALIEN_DEBUG - -#if defined(Q_OS_SYMBIAN) -#include "qt_s60_p.h" -#endif - -static void initResources() -{ -#if defined(Q_WS_WINCE) - Q_INIT_RESOURCE_EXTERN(qstyle_wince) - Q_INIT_RESOURCE(qstyle_wince); -#elif defined(Q_OS_SYMBIAN) - Q_INIT_RESOURCE_EXTERN(qstyle_s60) - Q_INIT_RESOURCE(qstyle_s60); -#else - Q_INIT_RESOURCE_EXTERN(qstyle) - Q_INIT_RESOURCE(qstyle); -#endif - Q_INIT_RESOURCE_EXTERN(qmessagebox) - Q_INIT_RESOURCE(qmessagebox); -#if !defined(QT_NO_PRINTDIALOG) - Q_INIT_RESOURCE_EXTERN(qprintdialog) - Q_INIT_RESOURCE(qprintdialog); -#endif - -} - -QT_BEGIN_NAMESPACE - -Q_CORE_EXPORT void qt_call_post_routines(); - -QApplication::Type qt_appType=QApplication::Tty; -QApplicationPrivate *QApplicationPrivate::self = 0; - -QInputContext *QApplicationPrivate::inputContext = 0; - -bool QApplicationPrivate::quitOnLastWindowClosed = true; - -#ifdef Q_WS_WINCE -int QApplicationPrivate::autoMaximizeThreshold = -1; -bool QApplicationPrivate::autoSipEnabled = false; -#else -bool QApplicationPrivate::autoSipEnabled = true; -#endif - -QApplicationPrivate::QApplicationPrivate(int &argc, char **argv, QApplication::Type type, int flags) - : QCoreApplicationPrivate(argc, argv, flags) -{ - application_type = type; - qt_appType = type; - -#ifndef QT_NO_SESSIONMANAGER - is_session_restored = false; -#endif - - quitOnLastWindowClosed = true; - -#ifdef QT3_SUPPORT - qt_compat_used = 0; - qt_compat_resolved = 0; - qt_tryAccelEvent = 0; - qt_tryComposeUnicode = 0; - qt_dispatchAccelEvent = 0; -#endif -#if defined(Q_WS_QWS) && !defined(QT_NO_DIRECTPAINTER) - directPainters = 0; -#endif - -#ifndef QT_NO_GESTURES - gestureManager = 0; - gestureWidget = 0; -#endif // QT_NO_GESTURES - -#if defined(Q_WS_X11) || defined(Q_WS_WIN) - move_cursor = 0; - copy_cursor = 0; - link_cursor = 0; -#endif -#if defined(Q_WS_WIN) - ignore_cursor = 0; -#endif - - if (!self) - self = this; -} - -QApplicationPrivate::~QApplicationPrivate() -{ - if (self == this) - self = 0; -} - -/*! - \class QApplication - \brief The QApplication class manages the GUI application's control - flow and main settings. - - QApplication contains the main event loop, where all events from the window - system and other sources are processed and dispatched. It also handles the - application's initialization, finalization, and provides session - management. In addition, QApplication handles most of the system-wide and - application-wide settings. - - For any GUI application using Qt, there is precisely \bold one QApplication - object, no matter whether the application has 0, 1, 2 or more windows at - any given time. For non-GUI Qt applications, use QCoreApplication instead, - as it does not depend on the \l QtGui library. - - The QApplication object is accessible through the instance() function that - returns a pointer equivalent to the global qApp pointer. - - QApplication's main areas of responsibility are: - \list - \o It initializes the application with the user's desktop settings - such as palette(), font() and doubleClickInterval(). It keeps - track of these properties in case the user changes the desktop - globally, for example through some kind of control panel. - - \o It performs event handling, meaning that it receives events - from the underlying window system and dispatches them to the - relevant widgets. By using sendEvent() and postEvent() you can - send your own events to widgets. - - \o It parses common command line arguments and sets its internal - state accordingly. See the \l{QApplication::QApplication()} - {constructor documentation} below for more details. - - \o It defines the application's look and feel, which is - encapsulated in a QStyle object. This can be changed at runtime - with setStyle(). - - \o It specifies how the application is to allocate colors. See - setColorSpec() for details. - - \o It provides localization of strings that are visible to the - user via translate(). - - \o It provides some magical objects like the desktop() and the - clipboard(). - - \o It knows about the application's windows. You can ask which - widget is at a certain position using widgetAt(), get a list of - topLevelWidgets() and closeAllWindows(), etc. - - \o It manages the application's mouse cursor handling, see - setOverrideCursor() - - \o On the X window system, it provides functions to flush and sync - the communication stream, see flushX() and syncX(). - - \o It provides support for sophisticated \l{Session Management} - {session management}. This makes it possible for applications - to terminate gracefully when the user logs out, to cancel a - shutdown process if termination isn't possible and even to - preserve the entire application's state for a future session. - See isSessionRestored(), sessionId() and commitData() and - saveState() for details. - \endlist - - Since the QApplication object does so much initialization, it \e{must} be - created before any other objects related to the user interface are created. - QApplication also deals with common command line arguments. Hence, it is - usually a good idea to create it \e before any interpretation or - modification of \c argv is done in the application itself. - - \table - \header - \o{2,1} Groups of functions - - \row - \o System settings - \o desktopSettingsAware(), - setDesktopSettingsAware(), - cursorFlashTime(), - setCursorFlashTime(), - doubleClickInterval(), - setDoubleClickInterval(), - setKeyboardInputInterval(), - wheelScrollLines(), - setWheelScrollLines(), - palette(), - setPalette(), - font(), - setFont(), - fontMetrics(). - - \row - \o Event handling - \o exec(), - processEvents(), - exit(), - quit(). - sendEvent(), - postEvent(), - sendPostedEvents(), - removePostedEvents(), - hasPendingEvents(), - notify(), - macEventFilter(), - qwsEventFilter(), - x11EventFilter(), - x11ProcessEvent(), - winEventFilter(). - - \row - \o GUI Styles - \o style(), - setStyle(). - - \row - \o Color usage - \o colorSpec(), - setColorSpec(), - qwsSetCustomColors(). - - \row - \o Text handling - \o installTranslator(), - removeTranslator() - translate(). - - \row - \o Widgets - \o allWidgets(), - topLevelWidgets(), - desktop(), - activePopupWidget(), - activeModalWidget(), - clipboard(), - focusWidget(), - activeWindow(), - widgetAt(). - - \row - \o Advanced cursor handling - \o overrideCursor(), - setOverrideCursor(), - restoreOverrideCursor(). - - \row - \o X Window System synchronization - \o flushX(), - syncX(). - - \row - \o Session management - \o isSessionRestored(), - sessionId(), - commitData(), - saveState(). - - \row - \o Miscellaneous - \o closeAllWindows(), - startingUp(), - closingDown(), - type(). - \endtable - - \sa QCoreApplication, QAbstractEventDispatcher, QEventLoop, QSettings -*/ - -/*! - \enum QApplication::Type - - \value Tty a console application - \value GuiClient a GUI client application - \value GuiServer a GUI server application (for Qt for Embedded Linux) -*/ - -/*! - \enum QApplication::ColorSpec - - \value NormalColor the default color allocation policy - \value CustomColor the same as NormalColor for X11; allocates colors - to a palette on demand under Windows - \value ManyColor the right choice for applications that use thousands of - colors - - See setColorSpec() for full details. -*/ - -/*! - \fn QWidget *QApplication::topLevelAt(const QPoint &point) - - Returns the top-level widget at the given \a point; returns 0 if - there is no such widget. -*/ - -/*! - \fn QWidget *QApplication::topLevelAt(int x, int y) - - \overload - - Returns the top-level widget at the point (\a{x}, \a{y}); returns - 0 if there is no such widget. -*/ - - -/* - The qt_init() and qt_cleanup() functions are implemented in the - qapplication_xyz.cpp file. -*/ - -void qt_init(QApplicationPrivate *priv, int type -#ifdef Q_WS_X11 - , Display *display = 0, Qt::HANDLE visual = 0, Qt::HANDLE colormap = 0 -#endif - ); -void qt_cleanup(); - -Qt::MouseButtons QApplicationPrivate::mouse_buttons = Qt::NoButton; -Qt::KeyboardModifiers QApplicationPrivate::modifier_buttons = Qt::NoModifier; - -QStyle *QApplicationPrivate::app_style = 0; // default application style -QString QApplicationPrivate::styleOverride; // style override - -#ifndef QT_NO_STYLE_STYLESHEET -QString QApplicationPrivate::styleSheet; // default application stylesheet -#endif -QPointer<QWidget> QApplicationPrivate::leaveAfterRelease = 0; - -int QApplicationPrivate::app_cspec = QApplication::NormalColor; -QPalette *QApplicationPrivate::app_pal = 0; // default application palette -QPalette *QApplicationPrivate::sys_pal = 0; // default system palette -QPalette *QApplicationPrivate::set_pal = 0; // default palette set by programmer - -QGraphicsSystem *QApplicationPrivate::graphics_system = 0; // default graphics system -#if defined(Q_WS_QPA) -QPlatformIntegration *QApplicationPrivate::platform_integration = 0; -#endif -QString QApplicationPrivate::graphics_system_name; // graphics system id - for delayed initialization -bool QApplicationPrivate::runtime_graphics_system = false; - -Q_GLOBAL_STATIC(QMutex, applicationFontMutex) -QFont *QApplicationPrivate::app_font = 0; // default application font -QFont *QApplicationPrivate::sys_font = 0; // default system font -QFont *QApplicationPrivate::set_font = 0; // default font set by programmer - -QIcon *QApplicationPrivate::app_icon = 0; -QWidget *QApplicationPrivate::main_widget = 0; // main application widget -QWidget *QApplicationPrivate::focus_widget = 0; // has keyboard input focus -QWidget *QApplicationPrivate::hidden_focus_widget = 0; // will get keyboard input focus after show() -QWidget *QApplicationPrivate::active_window = 0; // toplevel with keyboard focus -bool QApplicationPrivate::obey_desktop_settings = true; // use winsys resources -int QApplicationPrivate::cursor_flash_time = 1000; // text caret flash time -int QApplicationPrivate::mouse_double_click_time = 400; // mouse dbl click limit -int QApplicationPrivate::keyboard_input_time = 400; // keyboard input interval -#ifndef QT_NO_WHEELEVENT -int QApplicationPrivate::wheel_scroll_lines; // number of lines to scroll -#endif -bool qt_is_gui_used; -bool Q_GUI_EXPORT qt_tab_all_widgets = true; -bool qt_in_tab_key_event = false; -int qt_antialiasing_threshold = -1; -static int drag_time = 500; -#ifndef QT_GUI_DRAG_DISTANCE -#define QT_GUI_DRAG_DISTANCE 4 -#endif -#ifdef Q_OS_SYMBIAN -// The screens are a bit too small to for your thumb when using only 4 pixels drag distance. -static int drag_distance = 12; //XXX move to qplatformdefs.h -#else -static int drag_distance = QT_GUI_DRAG_DISTANCE; -#endif -static Qt::LayoutDirection layout_direction = Qt::LeftToRight; -QSize QApplicationPrivate::app_strut = QSize(0,0); // no default application strut -bool QApplicationPrivate::animate_ui = true; -bool QApplicationPrivate::animate_menu = false; -bool QApplicationPrivate::fade_menu = false; -bool QApplicationPrivate::animate_combo = false; -bool QApplicationPrivate::animate_tooltip = false; -bool QApplicationPrivate::fade_tooltip = false; -bool QApplicationPrivate::animate_toolbox = false; -bool QApplicationPrivate::widgetCount = false; -bool QApplicationPrivate::load_testability = false; -QString QApplicationPrivate::qmljs_debug_arguments; -#ifdef QT_KEYPAD_NAVIGATION -# ifdef Q_OS_SYMBIAN -Qt::NavigationMode QApplicationPrivate::navigationMode = Qt::NavigationModeKeypadDirectional; -# else -Qt::NavigationMode QApplicationPrivate::navigationMode = Qt::NavigationModeKeypadTabOrder; -# endif -QWidget *QApplicationPrivate::oldEditFocus = 0; -#endif - -bool qt_tabletChokeMouse = false; -static bool force_reverse = false; - -inline bool QApplicationPrivate::isAlien(QWidget *widget) -{ - if (!widget) - return false; -#if defined(Q_WS_QWS) || defined(Q_WS_QPA) - return !widget->isWindow() -# ifdef Q_BACKINGSTORE_SUBSURFACES - && !(widget->d_func()->maybeTopData() && widget->d_func()->maybeTopData()->windowSurface) -# endif - ; -#else - return !widget->internalWinId(); -#endif -} - -// ######## move to QApplicationPrivate -// Default application palettes and fonts (per widget type) -Q_GLOBAL_STATIC(PaletteHash, app_palettes) -PaletteHash *qt_app_palettes_hash() -{ - return app_palettes(); -} - -Q_GLOBAL_STATIC(FontHash, app_fonts) -FontHash *qt_app_fonts_hash() -{ - return app_fonts(); -} - -QWidgetList *QApplicationPrivate::popupWidgets = 0; // has keyboard input focus - -QDesktopWidget *qt_desktopWidget = 0; // root window widgets -#ifndef QT_NO_CLIPBOARD -QClipboard *qt_clipboard = 0; // global clipboard object -#endif -QWidgetList * qt_modal_stack=0; // stack of modal widgets - -/*! - \internal -*/ -void QApplicationPrivate::process_cmdline() -{ - // process platform-indep command line - if (!qt_is_gui_used || !argc) - return; - - int i, j; - - j = 1; - for (i=1; i<argc; i++) { // if you add anything here, modify QCoreApplication::arguments() - if (argv[i] && *argv[i] != '-') { - argv[j++] = argv[i]; - continue; - } - QByteArray arg = argv[i]; - arg = arg; - QString s; - if (arg == "-qdevel" || arg == "-qdebug") { - // obsolete argument - } else if (arg.indexOf("-qmljsdebugger=", 0) != -1) { - qmljs_debug_arguments = QString::fromLocal8Bit(arg.right(arg.length() - 15)); - } else if (arg.indexOf("-style=", 0) != -1) { - s = QString::fromLocal8Bit(arg.right(arg.length() - 7).toLower()); - } else if (arg == "-style" && i < argc-1) { - s = QString::fromLocal8Bit(argv[++i]).toLower(); -#ifndef QT_NO_SESSIONMANAGER - } else if (arg == "-session" && i < argc-1) { - ++i; - if (argv[i] && *argv[i]) { - session_id = QString::fromLatin1(argv[i]); - int p = session_id.indexOf(QLatin1Char('_')); - if (p >= 0) { - session_key = session_id.mid(p +1); - session_id = session_id.left(p); - } - is_session_restored = true; - } -#endif -#ifndef QT_NO_STYLE_STYLESHEET - } else if (arg == "-stylesheet" && i < argc -1) { - styleSheet = QLatin1String("file:///"); - styleSheet.append(QString::fromLocal8Bit(argv[++i])); - } else if (arg.indexOf("-stylesheet=") != -1) { - styleSheet = QLatin1String("file:///"); - styleSheet.append(QString::fromLocal8Bit(arg.right(arg.length() - 12))); -#endif - } else if (qstrcmp(arg, "-reverse") == 0) { - force_reverse = true; - QApplication::setLayoutDirection(Qt::RightToLeft); - } else if (qstrcmp(arg, "-widgetcount") == 0) { - widgetCount = true; - } else if (qstrcmp(arg, "-testability") == 0) { - load_testability = true; - } else if (arg == "-graphicssystem" && i < argc-1) { - graphics_system_name = QString::fromLocal8Bit(argv[++i]); - } else { - argv[j++] = argv[i]; - } - if (!s.isEmpty()) { - if (app_style) { - delete app_style; - app_style = 0; - } - styleOverride = s; - } - } - - if(j < argc) { - argv[j] = 0; - argc = j; - } -} - -/*! - Initializes the window system and constructs an application object with - \a argc command line arguments in \a argv. - - \warning The data referred to by \a argc and \a argv must stay valid for - the entire lifetime of the QApplication object. In addition, \a argc must - be greater than zero and \a argv must contain at least one valid character - string. - - The global \c qApp pointer refers to this application object. Only one - application object should be created. - - This application object must be constructed before any \l{QPaintDevice} - {paint devices} (including widgets, pixmaps, bitmaps etc.). - - \note \a argc and \a argv might be changed as Qt removes command line - arguments that it recognizes. - - Qt debugging options (not available if Qt was compiled without the QT_DEBUG - flag defined): - \list - \o -nograb, tells Qt that it must never grab the mouse or the - keyboard. - \o -dograb (only under X11), running under a debugger can cause an - implicit -nograb, use -dograb to override. - \o -sync (only under X11), switches to synchronous mode for - debugging. - \endlist - - See \l{Debugging Techniques} for a more detailed explanation. - - All Qt programs automatically support the following command line options: - \list - \o -style= \e style, sets the application GUI style. Possible values - are \c motif, \c windows, and \c platinum. If you compiled Qt with - additional styles or have additional styles as plugins these will - be available to the \c -style command line option. - \o -style \e style, is the same as listed above. - \o -stylesheet= \e stylesheet, sets the application \l styleSheet. The - value must be a path to a file that contains the Style Sheet. - \note Relative URLs in the Style Sheet file are relative to the - Style Sheet file's path. - \o -stylesheet \e stylesheet, is the same as listed above. - \o -session= \e session, restores the application from an earlier - \l{Session Management}{session}. - \o -session \e session, is the same as listed above. - \o -widgetcount, prints debug message at the end about number of - widgets left undestroyed and maximum number of widgets existed at - the same time - \o -reverse, sets the application's layout direction to - Qt::RightToLeft - \o -graphicssystem, sets the backend to be used for on-screen widgets - and QPixmaps. Available options are \c{raster} and \c{opengl}. - \o -qmljsdebugger=, activates the QML/JS debugger with a specified port. - The value must be of format port:1234[,block], where block is optional - and will make the application wait until a debugger connects to it. - \endlist - - The X11 version of Qt supports some traditional X11 command line options: - \list - \o -display \e display, sets the X display (default is $DISPLAY). - \o -geometry \e geometry, sets the client geometry of the first window - that is shown. - \o -fn or \c -font \e font, defines the application font. The font - should be specified using an X logical font description. Note that - this option is ignored when Qt is built with fontconfig support enabled. - \o -bg or \c -background \e color, sets the default background color - and an application palette (light and dark shades are calculated). - \o -fg or \c -foreground \e color, sets the default foreground color. - \o -btn or \c -button \e color, sets the default button color. - \o -name \e name, sets the application name. - \o -title \e title, sets the application title. - \o -visual \c TrueColor, forces the application to use a TrueColor - visual on an 8-bit display. - \o -ncols \e count, limits the number of colors allocated in the color - cube on an 8-bit display, if the application is using the - QApplication::ManyColor color specification. If \e count is 216 - then a 6x6x6 color cube is used (i.e. 6 levels of red, 6 of green, - and 6 of blue); for other values, a cube approximately proportional - to a 2x3x1 cube is used. - \o -cmap, causes the application to install a private color map on an - 8-bit display. - \o -im, sets the input method server (equivalent to setting the - XMODIFIERS environment variable) - \o -inputstyle, defines how the input is inserted into the given - widget, e.g., \c onTheSpot makes the input appear directly in the - widget, while \c overTheSpot makes the input appear in a box - floating over the widget and is not inserted until the editing is - done. - \endlist - - \section1 X11 Notes - - If QApplication fails to open the X11 display, it will terminate - the process. This behavior is consistent with most X11 - applications. - - \sa arguments() -*/ - -QApplication::QApplication(int &argc, char **argv) - : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient, 0x040000)) -{ Q_D(QApplication); d->construct(); } - -QApplication::QApplication(int &argc, char **argv, int _internal) - : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient, _internal)) -{ Q_D(QApplication); d->construct(); } - - -/*! - Constructs an application object with \a argc command line arguments in - \a argv. If \a GUIenabled is true, a GUI application is constructed, - otherwise a non-GUI (console) application is created. - - \warning The data referred to by \a argc and \a argv must stay valid for - the entire lifetime of the QApplication object. In addition, \a argc must - be greater than zero and \a argv must contain at least one valid character - string. - - Set \a GUIenabled to false for programs without a graphical user interface - that should be able to run without a window system. - - On X11, the window system is initialized if \a GUIenabled is true. If - \a GUIenabled is false, the application does not connect to the X server. - On Windows and Mac OS, currently the window system is always initialized, - regardless of the value of GUIenabled. This may change in future versions - of Qt. - - The following example shows how to create an application that uses a - graphical interface when available. - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 0 -*/ - -QApplication::QApplication(int &argc, char **argv, bool GUIenabled ) - : QCoreApplication(*new QApplicationPrivate(argc, argv, GUIenabled ? GuiClient : Tty, 0x040000)) -{ Q_D(QApplication); d->construct(); } - -QApplication::QApplication(int &argc, char **argv, bool GUIenabled , int _internal) - : QCoreApplication(*new QApplicationPrivate(argc, argv, GUIenabled ? GuiClient : Tty, _internal)) -{ Q_D(QApplication); d->construct();} - - - -/*! - Constructs an application object with \a argc command line arguments in - \a argv. - - \warning The data referred to by \a argc and \a argv must stay valid for - the entire lifetime of the QApplication object. In addition, \a argc must - be greater than zero and \a argv must contain at least one valid character - string. - - With Qt for Embedded Linux, passing QApplication::GuiServer for \a type - makes this application the server (equivalent to running with the - \c -qws option). -*/ -QApplication::QApplication(int &argc, char **argv, Type type) - : QCoreApplication(*new QApplicationPrivate(argc, argv, type, 0x040000)) -{ Q_D(QApplication); d->construct(); } - -QApplication::QApplication(int &argc, char **argv, Type type , int _internal) - : QCoreApplication(*new QApplicationPrivate(argc, argv, type, _internal)) -{ Q_D(QApplication); d->construct(); } - -#if defined(Q_WS_X11) && !defined(QT_NO_EGL) -static int qt_matchLibraryName(dl_phdr_info *info, size_t, void *data) -{ - const char *name = static_cast<const char *>(data); - return strstr(info->dlpi_name, name) != 0; -} -#endif - -/*! - \internal -*/ -void QApplicationPrivate::construct( -#ifdef Q_WS_X11 - Display *dpy, Qt::HANDLE visual, Qt::HANDLE cmap -#endif - ) -{ - initResources(); - - qt_is_gui_used = (qt_appType != QApplication::Tty); - process_cmdline(); - // the environment variable has the lowest precedence of runtime graphicssystem switches - if (graphics_system_name.isEmpty()) - graphics_system_name = QString::fromLocal8Bit(qgetenv("QT_GRAPHICSSYSTEM")); - -#if defined(Q_WS_X11) && !defined(QT_NO_EGL) - if (graphics_system_name.isEmpty()) { - bool linksWithMeeGoTouch = dl_iterate_phdr(qt_matchLibraryName, const_cast<char *>("libmeegotouchcore")); - bool linksWithMeeGoGraphicsSystemHelper = dl_iterate_phdr(qt_matchLibraryName, const_cast<char *>("libQtMeeGoGraphicsSystemHelper")); - - if (linksWithMeeGoTouch && !linksWithMeeGoGraphicsSystemHelper) { - qWarning("Running non-meego graphics system enabled MeeGo touch, forcing native graphicssystem\n"); - graphics_system_name = QLatin1String("native"); - } - } -#endif - - // Must be called before initialize() - qt_init(this, qt_appType -#ifdef Q_WS_X11 - , dpy, visual, cmap -#endif - ); - initialize(); - eventDispatcher->startingUp(); - -#ifdef QT_EVAL - extern void qt_gui_eval_init(uint); - qt_gui_eval_init(application_type); -#endif - -#if defined(Q_OS_SYMBIAN) && !defined(QT_NO_SYSTEMLOCALE) - symbianInit(); -#endif - -#ifndef QT_NO_LIBRARY - if(load_testability) { - QLibrary testLib(QLatin1String("qttestability")); - if (testLib.load()) { - typedef void (*TasInitialize)(void); - TasInitialize initFunction = (TasInitialize)testLib.resolve("qt_testability_init"); -#ifdef Q_OS_SYMBIAN - // resolving method by name does not work on Symbian OS so need to use ordinal - if(!initFunction) { - initFunction = (TasInitialize)testLib.resolve("1"); - } -#endif - if (initFunction) { - initFunction(); - } else { - qCritical("Library qttestability resolve failed!"); - } - } else { - qCritical("Library qttestability load failed!"); - } - } - - //make sure the plugin is loaded - if (qt_is_gui_used) - qt_guiPlatformPlugin(); -#endif -} - -#if defined(Q_WS_X11) -// ### a string literal is a cont char* -// ### using it as a char* is wrong and could lead to segfaults -// ### if aargv is modified someday -// ########## make it work with argc == argv == 0 -static int aargc = 1; -static char *aargv[] = { (char*)"unknown", 0 }; - -/*! - \fn QApplication::QApplication(Display* display, Qt::HANDLE visual, Qt::HANDLE colormap) - - Creates an application, given an already open display \a display. If - \a visual and \a colormap are non-zero, the application will use those - values as the default Visual and Colormap contexts. - - \warning Qt only supports TrueColor visuals at depths higher than 8 - bits-per-pixel. - - This function is only available on X11. -*/ -QApplication::QApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE colormap) - : QCoreApplication(*new QApplicationPrivate(aargc, aargv, GuiClient, 0x040000)) -{ - if (! dpy) - qWarning("QApplication: Invalid Display* argument"); - Q_D(QApplication); - d->construct(dpy, visual, colormap); -} - -QApplication::QApplication(Display* dpy, Qt::HANDLE visual, Qt::HANDLE colormap, int _internal) - : QCoreApplication(*new QApplicationPrivate(aargc, aargv, GuiClient, _internal)) -{ - if (! dpy) - qWarning("QApplication: Invalid Display* argument"); - Q_D(QApplication); - d->construct(dpy, visual, colormap); - QApplicationPrivate::app_compile_version = _internal; -} - -/*! - \fn QApplication::QApplication(Display *display, int &argc, char **argv, - Qt::HANDLE visual, Qt::HANDLE colormap) - - Creates an application, given an already open \a display and using \a argc - command line arguments in \a argv. If \a visual and \a colormap are - non-zero, the application will use those values as the default Visual - and Colormap contexts. - - \warning Qt only supports TrueColor visuals at depths higher than 8 - bits-per-pixel. - - This function is only available on X11. -*/ -QApplication::QApplication(Display *dpy, int &argc, char **argv, - Qt::HANDLE visual, Qt::HANDLE colormap) - : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient, 0x040000)) -{ - if (! dpy) - qWarning("QApplication: Invalid Display* argument"); - Q_D(QApplication); - d->construct(dpy, visual, colormap); -} - -QApplication::QApplication(Display *dpy, int &argc, char **argv, - Qt::HANDLE visual, Qt::HANDLE colormap, int _internal) - : QCoreApplication(*new QApplicationPrivate(argc, argv, GuiClient, _internal)) -{ - if (! dpy) - qWarning("QApplication: Invalid Display* argument"); - Q_D(QApplication); - d->construct(dpy, visual, colormap); - QApplicationPrivate::app_compile_version = _internal; -} - -#endif // Q_WS_X11 - -extern void qInitDrawhelperAsm(); -extern void qInitImageConversions(); -extern int qRegisterGuiVariant(); -extern int qUnregisterGuiVariant(); -#ifndef QT_NO_STATEMACHINE -extern int qRegisterGuiStateMachine(); -extern int qUnregisterGuiStateMachine(); -#endif - -/*! - \fn void QApplicationPrivate::initialize() - - Initializes the QApplication object, called from the constructors. -*/ -void QApplicationPrivate::initialize() -{ - QWidgetPrivate::mapper = new QWidgetMapper; - QWidgetPrivate::allWidgets = new QWidgetSet; - -#if !defined(Q_WS_X11) && !defined(Q_WS_QWS) && !defined(Q_WS_QPA) - // initialize the graphics system - on X11 this is initialized inside - // qt_init() in qapplication_x11.cpp because of several reasons. - // On QWS, the graphics system is set by the QScreen plugin. - // We don't use graphics systems in Qt QPA - graphics_system = QGraphicsSystemFactory::create(graphics_system_name); -#endif - - if (qt_appType != QApplication::Tty) - (void) QApplication::style(); // trigger creation of application style - // trigger registering of QVariant's GUI types - qRegisterGuiVariant(); -#ifndef QT_NO_STATEMACHINE - // trigger registering of QStateMachine's GUI types - qRegisterGuiStateMachine(); -#endif - - is_app_running = true; // no longer starting up - - Q_Q(QApplication); -#ifndef QT_NO_SESSIONMANAGER - // connect to the session manager - session_manager = new QSessionManager(q, session_id, session_key); -#endif - - if (qgetenv("QT_USE_NATIVE_WINDOWS").toInt() > 0) - q->setAttribute(Qt::AA_NativeWindows); - -#ifdef Q_WS_WINCE -#ifdef QT_AUTO_MAXIMIZE_THRESHOLD - autoMaximizeThreshold = QT_AUTO_MAXIMIZE_THRESHOLD; -#else - if (qt_wince_is_mobile()) - autoMaximizeThreshold = 50; - else - autoMaximizeThreshold = -1; -#endif //QT_AUTO_MAXIMIZE_THRESHOLD -#endif //Q_WS_WINCE - - // Set up which span functions should be used in raster engine... - qInitDrawhelperAsm(); - // and QImage conversion functions - qInitImageConversions(); - -#ifndef QT_NO_WHEELEVENT - QApplicationPrivate::wheel_scroll_lines = 3; -#endif - - if (qt_is_gui_used) - initializeMultitouch(); -} - -/*! - Returns the type of application (\l Tty, GuiClient, or - GuiServer). The type is set when constructing the QApplication - object. -*/ -QApplication::Type QApplication::type() -{ - return qt_appType; -} - -/***************************************************************************** - Functions returning the active popup and modal widgets. - *****************************************************************************/ - -/*! - Returns the active popup widget. - - A popup widget is a special top-level widget that sets the \c - Qt::WType_Popup widget flag, e.g. the QMenu widget. When the application - opens a popup widget, all events are sent to the popup. Normal widgets and - modal widgets cannot be accessed before the popup widget is closed. - - Only other popup widgets may be opened when a popup widget is shown. The - popup widgets are organized in a stack. This function returns the active - popup widget at the top of the stack. - - \sa activeModalWidget(), topLevelWidgets() -*/ - -QWidget *QApplication::activePopupWidget() -{ - return QApplicationPrivate::popupWidgets && !QApplicationPrivate::popupWidgets->isEmpty() ? - QApplicationPrivate::popupWidgets->last() : 0; -} - - -/*! - Returns the active modal widget. - - A modal widget is a special top-level widget which is a subclass of QDialog - that specifies the modal parameter of the constructor as true. A modal - widget must be closed before the user can continue with other parts of the - program. - - Modal widgets are organized in a stack. This function returns the active - modal widget at the top of the stack. - - \sa activePopupWidget(), topLevelWidgets() -*/ - -QWidget *QApplication::activeModalWidget() -{ - return qt_modal_stack && !qt_modal_stack->isEmpty() ? qt_modal_stack->first() : 0; -} - -/*! - Cleans up any window system resources that were allocated by this - application. Sets the global variable \c qApp to 0. -*/ - -QApplication::~QApplication() -{ - Q_D(QApplication); - -#ifndef QT_NO_CLIPBOARD - // flush clipboard contents - if (qt_clipboard) { - QEvent event(QEvent::Clipboard); - QApplication::sendEvent(qt_clipboard, &event); - } -#endif - - //### this should probable be done even later - qt_call_post_routines(); - - // kill timers before closing down the dispatcher - d->toolTipWakeUp.stop(); - d->toolTipFallAsleep.stop(); - - d->eventDispatcher->closingDown(); - d->eventDispatcher = 0; - QApplicationPrivate::is_app_closing = true; - QApplicationPrivate::is_app_running = false; - - delete QWidgetPrivate::mapper; - QWidgetPrivate::mapper = 0; - - // delete all widgets - if (QWidgetPrivate::allWidgets) { - QWidgetSet *mySet = QWidgetPrivate::allWidgets; - QWidgetPrivate::allWidgets = 0; - for (QWidgetSet::ConstIterator it = mySet->constBegin(); it != mySet->constEnd(); ++it) { - register QWidget *w = *it; - if (!w->parent()) // window - w->destroy(true, true); - } - delete mySet; - } - - delete qt_desktopWidget; - qt_desktopWidget = 0; - -#ifndef QT_NO_CLIPBOARD - delete qt_clipboard; - qt_clipboard = 0; -#endif - -#if defined(Q_WS_X11) || defined(Q_WS_WIN) - delete d->move_cursor; d->move_cursor = 0; - delete d->copy_cursor; d->copy_cursor = 0; - delete d->link_cursor; d->link_cursor = 0; -#endif -#if defined(Q_WS_WIN) - delete d->ignore_cursor; d->ignore_cursor = 0; -#endif - - delete QApplicationPrivate::app_pal; - QApplicationPrivate::app_pal = 0; - delete QApplicationPrivate::sys_pal; - QApplicationPrivate::sys_pal = 0; - delete QApplicationPrivate::set_pal; - QApplicationPrivate::set_pal = 0; - app_palettes()->clear(); - - { - QMutexLocker locker(applicationFontMutex()); - delete QApplicationPrivate::app_font; - QApplicationPrivate::app_font = 0; - } - delete QApplicationPrivate::sys_font; - QApplicationPrivate::sys_font = 0; - delete QApplicationPrivate::set_font; - QApplicationPrivate::set_font = 0; - app_fonts()->clear(); - - delete QApplicationPrivate::app_style; - QApplicationPrivate::app_style = 0; - delete QApplicationPrivate::app_icon; - QApplicationPrivate::app_icon = 0; - delete QApplicationPrivate::graphics_system; - QApplicationPrivate::graphics_system = 0; -#ifndef QT_NO_CURSOR - d->cursor_list.clear(); -#endif - -#ifndef QT_NO_DRAGANDDROP - if (qt_is_gui_used) - delete QDragManager::self(); -#endif - - d->cleanupMultitouch(); - - qt_cleanup(); - - if (QApplicationPrivate::widgetCount) - qDebug("Widgets left: %i Max widgets: %i \n", QWidgetPrivate::instanceCounter, QWidgetPrivate::maxInstances); -#ifndef QT_NO_SESSIONMANAGER - delete d->session_manager; - d->session_manager = 0; -#endif //QT_NO_SESSIONMANAGER - - QApplicationPrivate::obey_desktop_settings = true; - QApplicationPrivate::cursor_flash_time = 1000; - QApplicationPrivate::mouse_double_click_time = 400; - QApplicationPrivate::keyboard_input_time = 400; - - drag_time = 500; - drag_distance = 4; - layout_direction = Qt::LeftToRight; - QApplicationPrivate::app_strut = QSize(0, 0); - QApplicationPrivate::animate_ui = true; - QApplicationPrivate::animate_menu = false; - QApplicationPrivate::fade_menu = false; - QApplicationPrivate::animate_combo = false; - QApplicationPrivate::animate_tooltip = false; - QApplicationPrivate::fade_tooltip = false; - QApplicationPrivate::widgetCount = false; - -#ifndef QT_NO_STATEMACHINE - // trigger unregistering of QStateMachine's GUI types - qUnregisterGuiStateMachine(); -#endif - // trigger unregistering of QVariant's GUI types - qUnregisterGuiVariant(); -} - - -/*! - \fn QWidget *QApplication::widgetAt(const QPoint &point) - - Returns the widget at global screen position \a point, or 0 if there is no - Qt widget there. - - This function can be slow. - - \sa QCursor::pos(), QWidget::grabMouse(), QWidget::grabKeyboard() -*/ -QWidget *QApplication::widgetAt(const QPoint &p) -{ - QWidget *window = QApplication::topLevelAt(p); - if (!window) - return 0; - - QWidget *child = 0; - - if (!window->testAttribute(Qt::WA_TransparentForMouseEvents)) - child = window->childAt(window->mapFromGlobal(p)); - - if (child) - return child; - - if (window->testAttribute(Qt::WA_TransparentForMouseEvents)) { - //shoot a hole in the widget and try once again, - //suboptimal on Qt for Embedded Linux where we do - //know the stacking order of the toplevels. - int x = p.x(); - int y = p.y(); - QRegion oldmask = window->mask(); - QPoint wpoint = window->mapFromGlobal(QPoint(x, y)); - QRegion newmask = (oldmask.isEmpty() ? QRegion(window->rect()) : oldmask) - - QRegion(wpoint.x(), wpoint.y(), 1, 1); - window->setMask(newmask); - QWidget *recurse = 0; - if (QApplication::topLevelAt(p) != window) // verify recursion will terminate - recurse = widgetAt(x, y); - if (oldmask.isEmpty()) - window->clearMask(); - else - window->setMask(oldmask); - return recurse; - } - return window; -} - -/*! - \fn QWidget *QApplication::widgetAt(int x, int y) - - \overload - - Returns the widget at global screen position (\a x, \a y), or 0 if there is - no Qt widget there. -*/ - -/*! - \fn void QApplication::setArgs(int argc, char **argv) - \internal -*/ - - - -/*! - \internal -*/ -bool QApplication::compressEvent(QEvent *event, QObject *receiver, QPostEventList *postedEvents) -{ - if ((event->type() == QEvent::UpdateRequest -#ifdef QT3_SUPPORT - || event->type() == QEvent::LayoutHint -#endif - || event->type() == QEvent::LayoutRequest - || event->type() == QEvent::Resize - || event->type() == QEvent::Move - || event->type() == QEvent::LanguageChange - || event->type() == QEvent::UpdateSoftKeys - || event->type() == QEvent::InputMethod)) { - for (int i = 0; i < postedEvents->size(); ++i) { - const QPostEvent &cur = postedEvents->at(i); - if (cur.receiver != receiver || cur.event == 0 || cur.event->type() != event->type()) - continue; - if (cur.event->type() == QEvent::LayoutRequest -#ifdef QT3_SUPPORT - || cur.event->type() == QEvent::LayoutHint -#endif - || cur.event->type() == QEvent::UpdateRequest) { - ; - } else if (cur.event->type() == QEvent::Resize) { - ((QResizeEvent *)(cur.event))->s = ((QResizeEvent *)event)->s; - } else if (cur.event->type() == QEvent::Move) { - ((QMoveEvent *)(cur.event))->p = ((QMoveEvent *)event)->p; - } else if (cur.event->type() == QEvent::LanguageChange) { - ; - } else if (cur.event->type() == QEvent::UpdateSoftKeys) { - ; - } else if ( cur.event->type() == QEvent::InputMethod ) { - *(QInputMethodEvent *)(cur.event) = *(QInputMethodEvent *)event; - } else { - continue; - } - delete event; - return true; - } - return false; - } - return QCoreApplication::compressEvent(event, receiver, postedEvents); -} - -/*! - \property QApplication::styleSheet - \brief the application style sheet - \since 4.2 - - By default, this property returns an empty string unless the user specifies - the \c{-stylesheet} option on the command line when running the application. - - \sa QWidget::setStyle(), {Qt Style Sheets} -*/ - -/*! - \property QApplication::autoMaximizeThreshold - \since 4.4 - \brief defines a threshold for auto maximizing widgets - - \bold{The auto maximize threshold is only available as part of Qt for - Windows CE.} - - This property defines a threshold for the size of a window as a percentage - of the screen size. If the minimum size hint of a window exceeds the - threshold, calling show() will cause the window to be maximized - automatically. - - Setting the threshold to 100 or greater means that the widget will always - be maximized. Alternatively, setting the threshold to 50 means that the - widget will be maximized only if the vertical minimum size hint is at least - 50% of the vertical screen size. - - Setting the threshold to -1 disables the feature. - - On Windows CE the default is -1 (i.e., it is disabled). - On Windows Mobile the default is 40. -*/ - -/*! - \property QApplication::autoSipEnabled - \since 4.5 - \brief toggles automatic SIP (software input panel) visibility - - Set this property to \c true to automatically display the SIP when entering - widgets that accept keyboard input. This property only affects widgets with - the WA_InputMethodEnabled attribute set, and is typically used to launch - a virtual keyboard on devices which have very few or no keys. - - \bold{ The property only has an effect on platforms which use software input - panels, such as Windows CE and Symbian.} - - The default is platform dependent. -*/ - -#ifdef Q_WS_WINCE -void QApplication::setAutoMaximizeThreshold(const int threshold) -{ - QApplicationPrivate::autoMaximizeThreshold = threshold; -} - -int QApplication::autoMaximizeThreshold() const -{ - return QApplicationPrivate::autoMaximizeThreshold; -} -#endif - -void QApplication::setAutoSipEnabled(const bool enabled) -{ - QApplicationPrivate::autoSipEnabled = enabled; -} - -bool QApplication::autoSipEnabled() const -{ - return QApplicationPrivate::autoSipEnabled; -} - -#ifndef QT_NO_STYLE_STYLESHEET - -QString QApplication::styleSheet() const -{ - return QApplicationPrivate::styleSheet; -} - -void QApplication::setStyleSheet(const QString& styleSheet) -{ - QApplicationPrivate::styleSheet = styleSheet; - QStyleSheetStyle *proxy = qobject_cast<QStyleSheetStyle*>(QApplicationPrivate::app_style); - if (styleSheet.isEmpty()) { // application style sheet removed - if (!proxy) - return; // there was no stylesheet before - setStyle(proxy->base); - } else if (proxy) { // style sheet update, just repolish - proxy->repolish(qApp); - } else { // stylesheet set the first time - QStyleSheetStyle *newProxy = new QStyleSheetStyle(QApplicationPrivate::app_style); - QApplicationPrivate::app_style->setParent(newProxy); - setStyle(newProxy); - } -} - -#endif // QT_NO_STYLE_STYLESHEET - -/*! - Returns the application's style object. - - \sa setStyle(), QStyle -*/ -QStyle *QApplication::style() -{ - if (QApplicationPrivate::app_style) - return QApplicationPrivate::app_style; - if (!qt_is_gui_used) { - Q_ASSERT(!"No style available in non-gui applications!"); - return 0; - } - - if (!QApplicationPrivate::app_style) { - // Compile-time search for default style - // - QString style; -#ifdef QT_BUILD_INTERNAL - QString envStyle = QString::fromLocal8Bit(qgetenv("QT_STYLE_OVERRIDE")); -#else - QString envStyle; -#endif - if (!QApplicationPrivate::styleOverride.isEmpty()) { - style = QApplicationPrivate::styleOverride; - } else if (!envStyle.isEmpty()) { - style = envStyle; - } else { - style = QApplicationPrivate::desktopStyleKey(); - } - - QStyle *&app_style = QApplicationPrivate::app_style; - app_style = QStyleFactory::create(style); - if (!app_style) { - QStringList styles = QStyleFactory::keys(); - for (int i = 0; i < styles.size(); ++i) { - if ((app_style = QStyleFactory::create(styles.at(i)))) - break; - } - } - if (!app_style) { - Q_ASSERT(!"No styles available!"); - return 0; - } - } - // take ownership of the style - QApplicationPrivate::app_style->setParent(qApp); - - if (!QApplicationPrivate::sys_pal) - QApplicationPrivate::setSystemPalette(QApplicationPrivate::app_style->standardPalette()); - if (QApplicationPrivate::set_pal) // repolish set palette with the new style - QApplication::setPalette(*QApplicationPrivate::set_pal); - -#ifndef QT_NO_STYLE_STYLESHEET - if (!QApplicationPrivate::styleSheet.isEmpty()) { - qApp->setStyleSheet(QApplicationPrivate::styleSheet); - } else -#endif - QApplicationPrivate::app_style->polish(qApp); - - return QApplicationPrivate::app_style; -} - -/*! - Sets the application's GUI style to \a style. Ownership of the style object - is transferred to QApplication, so QApplication will delete the style - object on application exit or when a new style is set and the old style is - still the parent of the application object. - - Example usage: - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 1 - - When switching application styles, the color palette is set back to the - initial colors or the system defaults. This is necessary since certain - styles have to adapt the color palette to be fully style-guide compliant. - - Setting the style before a palette has been se, i.e., before creating - QApplication, will cause the application to use QStyle::standardPalette() - for the palette. - - \warning Qt style sheets are currently not supported for custom QStyle - subclasses. We plan to address this in some future release. - - \sa style(), QStyle, setPalette(), desktopSettingsAware() -*/ -void QApplication::setStyle(QStyle *style) -{ - if (!style || style == QApplicationPrivate::app_style) - return; - - QWidgetList all = allWidgets(); - - // clean up the old style - if (QApplicationPrivate::app_style) { - if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { - for (QWidgetList::ConstIterator it = all.constBegin(); it != all.constEnd(); ++it) { - register QWidget *w = *it; - if (!(w->windowType() == Qt::Desktop) && // except desktop - w->testAttribute(Qt::WA_WState_Polished)) { // has been polished - QApplicationPrivate::app_style->unpolish(w); - } - } - } - QApplicationPrivate::app_style->unpolish(qApp); - } - - QStyle *old = QApplicationPrivate::app_style; // save - -#ifndef QT_NO_STYLE_STYLESHEET - if (!QApplicationPrivate::styleSheet.isEmpty() && !qobject_cast<QStyleSheetStyle *>(style)) { - // we have a stylesheet already and a new style is being set - QStyleSheetStyle *newProxy = new QStyleSheetStyle(style); - style->setParent(newProxy); - QApplicationPrivate::app_style = newProxy; - } else -#endif // QT_NO_STYLE_STYLESHEET - QApplicationPrivate::app_style = style; - QApplicationPrivate::app_style->setParent(qApp); // take ownership - - // take care of possible palette requirements of certain gui - // styles. Do it before polishing the application since the style - // might call QApplication::setPalette() itself - if (QApplicationPrivate::set_pal) { - QApplication::setPalette(*QApplicationPrivate::set_pal); - } else if (QApplicationPrivate::sys_pal) { - QApplicationPrivate::initializeWidgetPaletteHash(); - QApplicationPrivate::setPalette_helper(*QApplicationPrivate::sys_pal, /*className=*/0, /*clearWidgetPaletteHash=*/false); - } else if (!QApplicationPrivate::sys_pal) { - // Initialize the sys_pal if it hasn't happened yet... - QApplicationPrivate::setSystemPalette(QApplicationPrivate::app_style->standardPalette()); - } - - // initialize the application with the new style - QApplicationPrivate::app_style->polish(qApp); - - // re-polish existing widgets if necessary - if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { - for (QWidgetList::ConstIterator it1 = all.constBegin(); it1 != all.constEnd(); ++it1) { - register QWidget *w = *it1; - if (w->windowType() != Qt::Desktop && w->testAttribute(Qt::WA_WState_Polished)) { - if (w->style() == QApplicationPrivate::app_style) - QApplicationPrivate::app_style->polish(w); // repolish -#ifndef QT_NO_STYLE_STYLESHEET - else - w->setStyleSheet(w->styleSheet()); // touch -#endif - } - } - - for (QWidgetList::ConstIterator it2 = all.constBegin(); it2 != all.constEnd(); ++it2) { - register QWidget *w = *it2; - if (w->windowType() != Qt::Desktop && !w->testAttribute(Qt::WA_SetStyle)) { - QEvent e(QEvent::StyleChange); - QApplication::sendEvent(w, &e); -#ifdef QT3_SUPPORT - if (old) - w->styleChange(*old); -#endif - w->update(); - } - } - } - -#ifndef QT_NO_STYLE_STYLESHEET - if (QStyleSheetStyle *oldProxy = qobject_cast<QStyleSheetStyle *>(old)) { - oldProxy->deref(); - } else -#endif - if (old && old->parent() == qApp) { - delete old; - } - - if (QApplicationPrivate::focus_widget) { - QFocusEvent in(QEvent::FocusIn, Qt::OtherFocusReason); - QApplication::sendEvent(QApplicationPrivate::focus_widget->style(), &in); - QApplicationPrivate::focus_widget->update(); - } -} - -/*! - \overload - - Requests a QStyle object for \a style from the QStyleFactory. - - The string must be one of the QStyleFactory::keys(), typically one of - "windows", "motif", "cde", "plastique", "windowsxp", or "macintosh". Style - names are case insensitive. - - Returns 0 if an unknown \a style is passed, otherwise the QStyle object - returned is set as the application's GUI style. - - \warning To ensure that the application's style is set correctly, it is - best to call this function before the QApplication constructor, if - possible. -*/ -QStyle* QApplication::setStyle(const QString& style) -{ - QStyle *s = QStyleFactory::create(style); - if (!s) - return 0; - - setStyle(s); - return s; -} - -/*! - \since 4.5 - - Sets the default graphics backend to \a system, which will be used for - on-screen widgets and QPixmaps. The available systems are \c{"native"}, - \c{"raster"} and \c{"opengl"}. - - There are several ways to set the graphics backend, in order of decreasing - precedence: - \list - \o the application commandline \c{-graphicssystem} switch - \o QApplication::setGraphicsSystem() - \o the QT_GRAPHICSSYSTEM environment variable - \o the Qt configure \c{-graphicssystem} switch - \endlist - If the highest precedence switch sets an invalid name, the error will be - ignored and the default backend will be used. - - \warning This function is only effective before the QApplication constructor - is called. - - \note The \c{"opengl"} option is currently experimental. -*/ - -void QApplication::setGraphicsSystem(const QString &system) -{ -#ifdef Q_WS_QPA - Q_UNUSED(system); -#else -# ifdef QT_GRAPHICSSYSTEM_RUNTIME - if (QApplicationPrivate::graphics_system_name == QLatin1String("runtime")) { - QRuntimeGraphicsSystem *r = - static_cast<QRuntimeGraphicsSystem *>(QApplicationPrivate::graphics_system); - r->setGraphicsSystem(system); - } else -# endif - QApplicationPrivate::graphics_system_name = system; -#endif -} - -/*! - Returns the color specification. - - \sa QApplication::setColorSpec() -*/ - -int QApplication::colorSpec() -{ - return QApplicationPrivate::app_cspec; -} - -/*! - Sets the color specification for the application to \a spec. - - The color specification controls how the application allocates colors when - run on a display with a limited amount of colors, e.g. 8 bit / 256 color - displays. - - The color specification must be set before you create the QApplication - object. - - The options are: - \list - \o QApplication::NormalColor. This is the default color allocation - strategy. Use this option if your application uses buttons, menus, - texts and pixmaps with few colors. With this option, the - application uses system global colors. This works fine for most - applications under X11, but on the Windows platform, it may cause - dithering of non-standard colors. - \o QApplication::CustomColor. Use this option if your application - needs a small number of custom colors. On X11, this option is the - same as NormalColor. On Windows, Qt creates a Windows palette, and - allocates colors to it on demand. - \o QApplication::ManyColor. Use this option if your application is - very color hungry, e.g., it requires thousands of colors. \br - Under X11 the effect is: - \list - \o For 256-color displays which have at best a 256 color true - color visual, the default visual is used, and colors are - allocated from a color cube. The color cube is the 6x6x6 - (216 color) "Web palette" (the red, green, and blue - components always have one of the following values: 0x00, - 0x33, 0x66, 0x99, 0xCC, or 0xFF), but the number of colors - can be changed by the \e -ncols option. The user can force - the application to use the true color visual with the - \l{QApplication::QApplication()}{-visual} option. - \o For 256-color displays which have a true color visual with - more than 256 colors, use that visual. Silicon Graphics X - servers this feature, for example. They provide an 8 bit - visual by default but can deliver true color when asked. - \endlist - On Windows, Qt creates a Windows palette, and fills it with a color - cube. - \endlist - - Be aware that the CustomColor and ManyColor choices may lead to colormap - flashing: The foreground application gets (most) of the available colors, - while the background windows will look less attractive. - - Example: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 2 - - \sa colorSpec() -*/ - -void QApplication::setColorSpec(int spec) -{ - if (qApp) - qWarning("QApplication::setColorSpec: This function must be " - "called before the QApplication object is created"); - QApplicationPrivate::app_cspec = spec; -} - -/*! - \property QApplication::globalStrut - \brief the minimum size that any GUI element that the user can interact - with should have - - For example, no button should be resized to be smaller than the global - strut size. The strut size should be considered when reimplementing GUI - controls that may be used on touch-screens or similar I/O devices. - - Example: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 3 - - By default, this property contains a QSize object with zero width and height. -*/ -QSize QApplication::globalStrut() -{ - return QApplicationPrivate::app_strut; -} - -void QApplication::setGlobalStrut(const QSize& strut) -{ - QApplicationPrivate::app_strut = strut; -} - -/*! - Returns the application palette. - - \sa setPalette(), QWidget::palette() -*/ -QPalette QApplication::palette() -{ - if (!QApplicationPrivate::app_pal) - QApplicationPrivate::app_pal = new QPalette(Qt::black); - return *QApplicationPrivate::app_pal; -} - -/*! - \fn QPalette QApplication::palette(const QWidget* widget) - \overload - - If a \a widget is passed, the default palette for the widget's class is - returned. This may or may not be the application palette. In most cases - there is no special palette for certain types of widgets, but one notable - exception is the popup menu under Windows, if the user has defined a - special background color for menus in the display settings. - - \sa setPalette(), QWidget::palette() -*/ -QPalette QApplication::palette(const QWidget* w) -{ - PaletteHash *hash = app_palettes(); - if (w && hash && hash->size()) { - QHash<QByteArray, QPalette>::ConstIterator it = hash->constFind(w->metaObject()->className()); - if (it != hash->constEnd()) - return *it; - for (it = hash->constBegin(); it != hash->constEnd(); ++it) { - if (w->inherits(it.key())) - return it.value(); - } - } - return palette(); -} - -/*! - \overload - - Returns the palette for widgets of the given \a className. - - \sa setPalette(), QWidget::palette() -*/ -QPalette QApplication::palette(const char *className) -{ - if (!QApplicationPrivate::app_pal) - palette(); - PaletteHash *hash = app_palettes(); - if (className && hash && hash->size()) { - QHash<QByteArray, QPalette>::ConstIterator it = hash->constFind(className); - if (it != hash->constEnd()) - return *it; - } - return *QApplicationPrivate::app_pal; -} - -void QApplicationPrivate::setPalette_helper(const QPalette &palette, const char* className, bool clearWidgetPaletteHash) -{ - QPalette pal = palette; - - if (QApplicationPrivate::app_style) - QApplicationPrivate::app_style->polish(pal); // NB: non-const reference - - bool all = false; - PaletteHash *hash = app_palettes(); - if (!className) { - if (QApplicationPrivate::app_pal && pal.isCopyOf(*QApplicationPrivate::app_pal)) - return; - if (!QApplicationPrivate::app_pal) - QApplicationPrivate::app_pal = new QPalette(pal); - else - *QApplicationPrivate::app_pal = pal; - if (hash && hash->size()) { - all = true; - if (clearWidgetPaletteHash) - hash->clear(); - } - } else if (hash) { - hash->insert(className, pal); - } - - if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { - // Send ApplicationPaletteChange to qApp itself, and to the widgets. - QEvent e(QEvent::ApplicationPaletteChange); - QApplication::sendEvent(QApplication::instance(), &e); - - QWidgetList wids = QApplication::allWidgets(); - for (QWidgetList::ConstIterator it = wids.constBegin(); it != wids.constEnd(); ++it) { - register QWidget *w = *it; - if (all || (!className && w->isWindow()) || w->inherits(className)) // matching class - QApplication::sendEvent(w, &e); - } - - // Send to all scenes as well. -#ifndef QT_NO_GRAPHICSVIEW - QList<QGraphicsScene *> &scenes = qApp->d_func()->scene_list; - for (QList<QGraphicsScene *>::ConstIterator it = scenes.constBegin(); - it != scenes.constEnd(); ++it) { - QApplication::sendEvent(*it, &e); - } -#endif //QT_NO_GRAPHICSVIEW - } - if (!className && (!QApplicationPrivate::sys_pal || !palette.isCopyOf(*QApplicationPrivate::sys_pal))) { - if (!QApplicationPrivate::set_pal) - QApplicationPrivate::set_pal = new QPalette(palette); - else - *QApplicationPrivate::set_pal = palette; - } -} - -/*! - Changes the default application palette to \a palette. - - If \a className is passed, the change applies only to widgets that inherit - \a className (as reported by QObject::inherits()). If \a className is left - 0, the change affects all widgets, thus overriding any previously set class - specific palettes. - - The palette may be changed according to the current GUI style in - QStyle::polish(). - - \warning Do not use this function in conjunction with \l{Qt Style Sheets}. - When using style sheets, the palette of a widget can be customized using - the "color", "background-color", "selection-color", - "selection-background-color" and "alternate-background-color". - - \note Some styles do not use the palette for all drawing, for instance, if - they make use of native theme engines. This is the case for the Windows XP, - Windows Vista, and Mac OS X styles. - - \sa QWidget::setPalette(), palette(), QStyle::polish() -*/ - -void QApplication::setPalette(const QPalette &palette, const char* className) -{ - QApplicationPrivate::setPalette_helper(palette, className, /*clearWidgetPaletteHash=*/ true); -} - - - -void QApplicationPrivate::setSystemPalette(const QPalette &pal) -{ - QPalette adjusted; - -#if 0 - // adjust the system palette to avoid dithering - QColormap cmap = QColormap::instance(); - if (cmap.depths() > 4 && cmap.depths() < 24) { - for (int g = 0; g < QPalette::NColorGroups; g++) - for (int i = 0; i < QPalette::NColorRoles; i++) { - QColor color = pal.color((QPalette::ColorGroup)g, (QPalette::ColorRole)i); - color = cmap.colorAt(cmap.pixel(color)); - adjusted.setColor((QPalette::ColorGroup)g, (QPalette::ColorRole) i, color); - } - } -#else - adjusted = pal; -#endif - - if (!sys_pal) - sys_pal = new QPalette(adjusted); - else - *sys_pal = adjusted; - - - if (!QApplicationPrivate::set_pal) - QApplication::setPalette(*sys_pal); -} - -/*! - Returns the default application font. - - \sa fontMetrics(), QWidget::font() -*/ -QFont QApplication::font() -{ - QMutexLocker locker(applicationFontMutex()); - if (!QApplicationPrivate::app_font) - QApplicationPrivate::app_font = new QFont(QLatin1String("Helvetica")); - return *QApplicationPrivate::app_font; -} - -/*! - \overload - - Returns the default font for the \a widget. - - \sa fontMetrics(), QWidget::setFont() -*/ - -QFont QApplication::font(const QWidget *widget) -{ - FontHash *hash = app_fonts(); - -#ifdef Q_WS_MAC - // short circuit for small and mini controls - if (widget->testAttribute(Qt::WA_MacSmallSize)) { - return hash->value("QSmallFont"); - } else if (widget->testAttribute(Qt::WA_MacMiniSize)) { - return hash->value("QMiniFont"); - } -#endif - if (widget && hash && hash->size()) { - QHash<QByteArray, QFont>::ConstIterator it = - hash->constFind(widget->metaObject()->className()); - if (it != hash->constEnd()) - return it.value(); - for (it = hash->constBegin(); it != hash->constEnd(); ++it) { - if (widget->inherits(it.key())) - return it.value(); - } - } - return font(); -} - -/*! - \overload - - Returns the font for widgets of the given \a className. - - \sa setFont(), QWidget::font() -*/ -QFont QApplication::font(const char *className) -{ - FontHash *hash = app_fonts(); - if (className && hash && hash->size()) { - QHash<QByteArray, QFont>::ConstIterator it = hash->constFind(className); - if (it != hash->constEnd()) - return *it; - } - return font(); -} - - -/*! - Changes the default application font to \a font. If \a className is passed, - the change applies only to classes that inherit \a className (as reported - by QObject::inherits()). - - On application start-up, the default font depends on the window system. It - can vary depending on both the window system version and the locale. This - function lets you override the default font; but overriding may be a bad - idea because, for example, some locales need extra large fonts to support - their special characters. - - \warning Do not use this function in conjunction with \l{Qt Style Sheets}. - The font of an application can be customized using the "font" style sheet - property. To set a bold font for all QPushButtons, set the application - styleSheet() as "QPushButton { font: bold }" - - \sa font(), fontMetrics(), QWidget::setFont() -*/ - -void QApplication::setFont(const QFont &font, const char *className) -{ - bool all = false; - FontHash *hash = app_fonts(); - if (!className) { - QMutexLocker locker(applicationFontMutex()); - if (!QApplicationPrivate::app_font) - QApplicationPrivate::app_font = new QFont(font); - else - *QApplicationPrivate::app_font = font; - if (hash && hash->size()) { - all = true; - hash->clear(); - } - } else if (hash) { - hash->insert(className, font); - } - if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { - // Send ApplicationFontChange to qApp itself, and to the widgets. - QEvent e(QEvent::ApplicationFontChange); - QApplication::sendEvent(QApplication::instance(), &e); - - QWidgetList wids = QApplication::allWidgets(); - for (QWidgetList::ConstIterator it = wids.constBegin(); it != wids.constEnd(); ++it) { - register QWidget *w = *it; - if (all || (!className && w->isWindow()) || w->inherits(className)) // matching class - sendEvent(w, &e); - } - -#ifndef QT_NO_GRAPHICSVIEW - // Send to all scenes as well. - QList<QGraphicsScene *> &scenes = qApp->d_func()->scene_list; - for (QList<QGraphicsScene *>::ConstIterator it = scenes.constBegin(); - it != scenes.constEnd(); ++it) { - QApplication::sendEvent(*it, &e); - } -#endif //QT_NO_GRAPHICSVIEW - } - if (!className && (!QApplicationPrivate::sys_font || !font.isCopyOf(*QApplicationPrivate::sys_font))) { - if (!QApplicationPrivate::set_font) - QApplicationPrivate::set_font = new QFont(font); - else - *QApplicationPrivate::set_font = font; - } -} - -/*! \internal -*/ -void QApplicationPrivate::setSystemFont(const QFont &font) -{ - if (!sys_font) - sys_font = new QFont(font); - else - *sys_font = font; - - if (!QApplicationPrivate::set_font) - QApplication::setFont(*sys_font); -} - -/*! \internal -*/ -QString QApplicationPrivate::desktopStyleKey() -{ - return qt_guiPlatformPlugin()->styleName(); -} - -/*! - \property QApplication::windowIcon - \brief the default window icon - - \sa QWidget::setWindowIcon(), {Setting the Application Icon} -*/ -QIcon QApplication::windowIcon() -{ - return QApplicationPrivate::app_icon ? *QApplicationPrivate::app_icon : QIcon(); -} - -void QApplication::setWindowIcon(const QIcon &icon) -{ - if (!QApplicationPrivate::app_icon) - QApplicationPrivate::app_icon = new QIcon(); - *QApplicationPrivate::app_icon = icon; - if (QApplicationPrivate::is_app_running && !QApplicationPrivate::is_app_closing) { -#ifdef Q_WS_MAC - void qt_mac_set_app_icon(const QPixmap &); //qapplication_mac.cpp - QSize size = QApplicationPrivate::app_icon->actualSize(QSize(128, 128)); - qt_mac_set_app_icon(QApplicationPrivate::app_icon->pixmap(size)); -#endif - QEvent e(QEvent::ApplicationWindowIconChange); - QWidgetList all = QApplication::allWidgets(); - for (QWidgetList::ConstIterator it = all.constBegin(); it != all.constEnd(); ++it) { - register QWidget *w = *it; - if (w->isWindow()) - sendEvent(w, &e); - } - } -} - -/*! - Returns a list of the top-level widgets (windows) in the application. - - \note Some of the top-level widgets may be hidden, for example a tooltip if - no tooltip is currently shown. - - Example: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 4 - - \sa allWidgets(), QWidget::isWindow(), QWidget::isHidden() -*/ -QWidgetList QApplication::topLevelWidgets() -{ - QWidgetList list; - QWidgetList all = allWidgets(); - - for (QWidgetList::ConstIterator it = all.constBegin(); it != all.constEnd(); ++it) { - QWidget *w = *it; - if (w->isWindow() && w->windowType() != Qt::Desktop) - list.append(w); - } - return list; -} - -/*! - Returns a list of all the widgets in the application. - - The list is empty (QList::isEmpty()) if there are no widgets. - - \note Some of the widgets may be hidden. - - Example: - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 5 - - \sa topLevelWidgets(), QWidget::isVisible() -*/ - -QWidgetList QApplication::allWidgets() -{ - if (QWidgetPrivate::allWidgets) - return QWidgetPrivate::allWidgets->toList(); - return QWidgetList(); -} - -/*! - Returns the application widget that has the keyboard input focus, or 0 if - no widget in this application has the focus. - - \sa QWidget::setFocus(), QWidget::hasFocus(), activeWindow(), focusChanged() -*/ - -QWidget *QApplication::focusWidget() -{ - return QApplicationPrivate::focus_widget; -} - -void QApplicationPrivate::setFocusWidget(QWidget *focus, Qt::FocusReason reason) -{ -#ifndef QT_NO_GRAPHICSVIEW - if (focus && focus->window()->graphicsProxyWidget()) - return; -#endif - - hidden_focus_widget = 0; - - if (focus != focus_widget) { - if (focus && focus->isHidden()) { - hidden_focus_widget = focus; - return; - } - - if (focus && (reason == Qt::BacktabFocusReason || reason == Qt::TabFocusReason) - && qt_in_tab_key_event) - focus->window()->setAttribute(Qt::WA_KeyboardFocusChange); - else if (focus && reason == Qt::ShortcutFocusReason) { - focus->window()->setAttribute(Qt::WA_KeyboardFocusChange); - } - QWidget *prev = focus_widget; - focus_widget = focus; -#ifndef QT_NO_IM - if (prev && ((reason != Qt::PopupFocusReason && reason != Qt::MenuBarFocusReason - && prev->testAttribute(Qt::WA_InputMethodEnabled)) - // Do reset the input context, in case the new focus widget won't accept keyboard input - // or it is not created fully yet. - || (focus_widget && (!focus_widget->testAttribute(Qt::WA_InputMethodEnabled) - || !focus_widget->testAttribute(Qt::WA_WState_Created))))) { - QInputContext *qic = prev->inputContext(); - if(qic) { - qic->reset(); - qic->setFocusWidget(0); - } - } -#endif //QT_NO_IM - - if(focus_widget) - focus_widget->d_func()->setFocus_sys(); - - if (reason != Qt::NoFocusReason) { - - //send events - if (prev) { -#ifdef QT_KEYPAD_NAVIGATION - if (QApplication::keypadNavigationEnabled()) { - if (prev->hasEditFocus() && reason != Qt::PopupFocusReason -#ifdef Q_OS_SYMBIAN - && reason != Qt::ActiveWindowFocusReason -#endif - ) - prev->setEditFocus(false); - } -#endif -#ifndef QT_NO_IM - if (focus) { - QInputContext *prevIc; - prevIc = prev->inputContext(); - if (prevIc && prevIc != focus->inputContext()) { - QEvent closeSIPEvent(QEvent::CloseSoftwareInputPanel); - QApplication::sendEvent(prev, &closeSIPEvent); - } - } -#endif - QFocusEvent out(QEvent::FocusOut, reason); - QPointer<QWidget> that = prev; - QApplication::sendEvent(prev, &out); - if (that) - QApplication::sendEvent(that->style(), &out); - } - if(focus && QApplicationPrivate::focus_widget == focus) { -#ifndef QT_NO_IM - if (focus->testAttribute(Qt::WA_InputMethodEnabled)) { - QInputContext *qic = focus->inputContext(); - if (qic && focus->testAttribute(Qt::WA_WState_Created) - && focus->isEnabled()) - qic->setFocusWidget(focus); - } -#endif //QT_NO_IM - QFocusEvent in(QEvent::FocusIn, reason); - QPointer<QWidget> that = focus; - QApplication::sendEvent(focus, &in); - if (that) - QApplication::sendEvent(that->style(), &in); - } - emit qApp->focusChanged(prev, focus_widget); - } - } -} - - -/*! - Returns the application top-level window that has the keyboard input focus, - or 0 if no application window has the focus. There might be an - activeWindow() even if there is no focusWidget(), for example if no widget - in that window accepts key events. - - \sa QWidget::setFocus(), QWidget::hasFocus(), focusWidget() -*/ - -QWidget *QApplication::activeWindow() -{ - return QApplicationPrivate::active_window; -} - -/*! - Returns display (screen) font metrics for the application font. - - \sa font(), setFont(), QWidget::fontMetrics(), QPainter::fontMetrics() -*/ - -QFontMetrics QApplication::fontMetrics() -{ - return desktop()->fontMetrics(); -} - - -/*! - Closes all top-level windows. - - This function is particularly useful for applications with many top-level - windows. It could, for example, be connected to a \gui{Exit} entry in the - \gui{File} menu: - - \snippet examples/mainwindows/mdi/mainwindow.cpp 0 - - The windows are closed in random order, until one window does not accept - the close event. The application quits when the last window was - successfully closed; this can be turned off by setting - \l quitOnLastWindowClosed to false. - - \sa quitOnLastWindowClosed, lastWindowClosed(), QWidget::close(), - QWidget::closeEvent(), lastWindowClosed(), quit(), topLevelWidgets(), - QWidget::isWindow() -*/ -void QApplication::closeAllWindows() -{ - bool did_close = true; - QWidget *w; - while ((w = activeModalWidget()) && did_close) { - if (!w->isVisible() || w->data->is_closing) - break; - did_close = w->close(); - } - QWidgetList list = QApplication::topLevelWidgets(); - for (int i = 0; did_close && i < list.size(); ++i) { - w = list.at(i); - if (w->isVisible() - && w->windowType() != Qt::Desktop - && !w->data->is_closing) { - did_close = w->close(); - list = QApplication::topLevelWidgets(); - i = -1; - } - } -} - -/*! - Displays a simple message box about Qt. The message includes the version - number of Qt being used by the application. - - This is useful for inclusion in the \gui Help menu of an application, as - shown in the \l{mainwindows/menus}{Menus} example. - - This function is a convenience slot for QMessageBox::aboutQt(). -*/ -void QApplication::aboutQt() -{ -#ifndef QT_NO_MESSAGEBOX - QMessageBox::aboutQt( -#ifdef Q_WS_MAC - 0 -#else - activeWindow() -#endif // Q_WS_MAC - ); -#endif // QT_NO_MESSAGEBOX -} - - -/*! - \fn void QApplication::lastWindowClosed() - - This signal is emitted from QApplication::exec() when the last visible - primary window (i.e. window with no parent) with the Qt::WA_QuitOnClose - attribute set is closed. - - By default, - - \list - \o this attribute is set for all widgets except transient windows such - as splash screens, tool windows, and popup menus - - \o QApplication implicitly quits when this signal is emitted. - \endlist - - This feature can be turned off by setting \l quitOnLastWindowClosed to - false. - - \sa QWidget::close() -*/ - -/*! - \since 4.1 - \fn void QApplication::focusChanged(QWidget *old, QWidget *now) - - This signal is emitted when the widget that has keyboard focus changed from - \a old to \a now, i.e., because the user pressed the tab-key, clicked into - a widget or changed the active window. Both \a old and \a now can be the - null-pointer. - - The signal is emitted after both widget have been notified about the change - through QFocusEvent. - - \sa QWidget::setFocus(), QWidget::clearFocus(), Qt::FocusReason -*/ - -/*! - \since 4.5 - \fn void QApplication::fontDatabaseChanged() - - This signal is emitted when application fonts are loaded or removed. - - \sa QFontDatabase::addApplicationFont(), - QFontDatabase::addApplicationFontFromData(), - QFontDatabase::removeAllApplicationFonts(), - QFontDatabase::removeApplicationFont() -*/ - -#ifndef QT_NO_TRANSLATION -static bool qt_detectRTLLanguage() -{ - return force_reverse ^ - (QApplication::tr("QT_LAYOUT_DIRECTION", - "Translate this string to the string 'LTR' in left-to-right" - " languages or to 'RTL' in right-to-left languages (such as Hebrew" - " and Arabic) to get proper widget layout.") == QLatin1String("RTL")); -} -#if defined(Q_WS_MAC) -static const char *application_menu_strings[] = { - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","Services"), - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","Hide %1"), - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","Hide Others"), - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","Show All"), - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","Preferences..."), - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","Quit %1"), - QT_TRANSLATE_NOOP("MAC_APPLICATION_MENU","About %1") - }; -QString qt_mac_applicationmenu_string(int type) -{ - QString menuString = QString::fromLatin1(application_menu_strings[type]); - QString translated = qApp->translate("QMenuBar", application_menu_strings[type]); - if (translated != menuString) - return translated; - else - return qApp->translate("MAC_APPLICATION_MENU", - application_menu_strings[type]); -} -#endif -#endif - -/*!\reimp - -*/ -bool QApplication::event(QEvent *e) -{ - Q_D(QApplication); - if(e->type() == QEvent::Close) { -#if defined(Q_OS_SYMBIAN) - // In order to have proper application-exit effects on Symbian, certain - // native APIs have to be called _before_ closing/destroying the widgets. - bool effectStarted = qt_beginFullScreenEffect(); -#endif - QCloseEvent *ce = static_cast<QCloseEvent*>(e); - ce->accept(); - closeAllWindows(); - - QWidgetList list = topLevelWidgets(); - for (int i = 0; i < list.size(); ++i) { - QWidget *w = list.at(i); - if (w->isVisible() && !(w->windowType() == Qt::Desktop) && !(w->windowType() == Qt::Popup) && - (!(w->windowType() == Qt::Dialog) || !w->parentWidget())) { - ce->ignore(); - break; - } - } - if (ce->isAccepted()) { - return true; - } else { -#if defined(Q_OS_SYMBIAN) - if (effectStarted) - qt_abortFullScreenEffect(); -#endif - } - } else if(e->type() == QEvent::LanguageChange) { -#ifndef QT_NO_TRANSLATION - setLayoutDirection(qt_detectRTLLanguage()?Qt::RightToLeft:Qt::LeftToRight); -#endif -#if defined(QT_MAC_USE_COCOA) - qt_mac_post_retranslateAppMenu(); -#endif - QWidgetList list = topLevelWidgets(); - for (int i = 0; i < list.size(); ++i) { - QWidget *w = list.at(i); - if (!(w->windowType() == Qt::Desktop)) - postEvent(w, new QEvent(QEvent::LanguageChange)); - } -#ifndef Q_OS_WIN - } else if (e->type() == QEvent::LocaleChange) { - // on Windows the event propagation is taken care by the - // WM_SETTINGCHANGE event handler. - QWidgetList list = topLevelWidgets(); - for (int i = 0; i < list.size(); ++i) { - QWidget *w = list.at(i); - if (!(w->windowType() == Qt::Desktop)) { - if (!w->testAttribute(Qt::WA_SetLocale)) - w->d_func()->setLocale_helper(QLocale(), true); - } - } -#endif - } else if (e->type() == QEvent::Timer) { - QTimerEvent *te = static_cast<QTimerEvent*>(e); - Q_ASSERT(te != 0); - if (te->timerId() == d->toolTipWakeUp.timerId()) { - d->toolTipWakeUp.stop(); - if (d->toolTipWidget) { - QWidget *w = d->toolTipWidget->window(); - // show tooltip if WA_AlwaysShowToolTips is set, or if - // any ancestor of d->toolTipWidget is the active - // window - bool showToolTip = w->testAttribute(Qt::WA_AlwaysShowToolTips); - while (w && !showToolTip) { - showToolTip = w->isActiveWindow(); - w = w->parentWidget(); - w = w ? w->window() : 0; - } - if (showToolTip) { - QHelpEvent e(QEvent::ToolTip, d->toolTipPos, d->toolTipGlobalPos); - QApplication::sendEvent(d->toolTipWidget, &e); - if (e.isAccepted()) - d->toolTipFallAsleep.start(2000, this); - } - } - } else if (te->timerId() == d->toolTipFallAsleep.timerId()) { - d->toolTipFallAsleep.stop(); - } - } - return QCoreApplication::event(e); -} -#if !defined(Q_WS_X11) - -// The doc and X implementation of this function is in qapplication_x11.cpp - -void QApplication::syncX() {} // do nothing - -#endif - -/*! - \fn Qt::WindowsVersion QApplication::winVersion() - - Use \l QSysInfo::WindowsVersion instead. -*/ - -/*! - \fn void QApplication::setActiveWindow(QWidget* active) - - Sets the active window to the \a active widget in response to a system - event. The function is called from the platform specific event handlers. - - \warning This function does \e not set the keyboard focus to the active - widget. Call QWidget::activateWindow() instead. - - It sets the activeWindow() and focusWidget() attributes and sends proper - \l{QEvent::WindowActivate}{WindowActivate}/\l{QEvent::WindowDeactivate} - {WindowDeactivate} and \l{QEvent::FocusIn}{FocusIn}/\l{QEvent::FocusOut} - {FocusOut} events to all appropriate widgets. The window will then be - painted in active state (e.g. cursors in line edits will blink), and it - will have tool tips enabled. - - \sa activeWindow(), QWidget::activateWindow() -*/ -void QApplication::setActiveWindow(QWidget* act) -{ - QWidget* window = act?act->window():0; - - if (QApplicationPrivate::active_window == window) - return; - -#ifndef QT_NO_GRAPHICSVIEW - if (window && window->graphicsProxyWidget()) { - // Activate the proxy's view->viewport() ? - return; - } -#endif - - QWidgetList toBeActivated; - QWidgetList toBeDeactivated; - - if (QApplicationPrivate::active_window) { - if (style()->styleHint(QStyle::SH_Widget_ShareActivation, 0, QApplicationPrivate::active_window)) { - QWidgetList list = topLevelWidgets(); - for (int i = 0; i < list.size(); ++i) { - QWidget *w = list.at(i); - if (w->isVisible() && w->isActiveWindow()) - toBeDeactivated.append(w); - } - } else { - toBeDeactivated.append(QApplicationPrivate::active_window); - } - } - -#if !defined(Q_WS_MAC) - QWidget *previousActiveWindow = QApplicationPrivate::active_window; -#endif - QApplicationPrivate::active_window = window; - - if (QApplicationPrivate::active_window) { - if (style()->styleHint(QStyle::SH_Widget_ShareActivation, 0, QApplicationPrivate::active_window)) { - QWidgetList list = topLevelWidgets(); - for (int i = 0; i < list.size(); ++i) { - QWidget *w = list.at(i); - if (w->isVisible() && w->isActiveWindow()) - toBeActivated.append(w); - } - } else { - toBeActivated.append(QApplicationPrivate::active_window); - } - - } - - // first the activation/deactivation events - QEvent activationChange(QEvent::ActivationChange); - QEvent windowActivate(QEvent::WindowActivate); - QEvent windowDeactivate(QEvent::WindowDeactivate); - -#if !defined(Q_WS_MAC) - if (!previousActiveWindow) { - QEvent appActivate(QEvent::ApplicationActivate); - sendSpontaneousEvent(qApp, &appActivate); - } -#endif - - for (int i = 0; i < toBeActivated.size(); ++i) { - QWidget *w = toBeActivated.at(i); - sendSpontaneousEvent(w, &windowActivate); - sendSpontaneousEvent(w, &activationChange); - } - -#ifdef QT_MAC_USE_COCOA - // In case the user clicked on a child window, we need to - // reestablish the stacking order of the window so - // it pops in front of other child windows in cocoa: - qt_cocoaStackChildWindowOnTopOfOtherChildren(window); -#endif - - for(int i = 0; i < toBeDeactivated.size(); ++i) { - QWidget *w = toBeDeactivated.at(i); - sendSpontaneousEvent(w, &windowDeactivate); - sendSpontaneousEvent(w, &activationChange); - } - -#if !defined(Q_WS_MAC) - if (!QApplicationPrivate::active_window) { - QEvent appDeactivate(QEvent::ApplicationDeactivate); - sendSpontaneousEvent(qApp, &appDeactivate); - } -#endif - - if (QApplicationPrivate::popupWidgets == 0) { // !inPopupMode() - // then focus events - if (!QApplicationPrivate::active_window && QApplicationPrivate::focus_widget) { - QApplicationPrivate::setFocusWidget(0, Qt::ActiveWindowFocusReason); - } else if (QApplicationPrivate::active_window) { - QWidget *w = QApplicationPrivate::active_window->focusWidget(); - if (w && w->isVisible() /*&& w->focusPolicy() != QWidget::NoFocus*/) - w->setFocus(Qt::ActiveWindowFocusReason); - else { - w = QApplicationPrivate::focusNextPrevChild_helper(QApplicationPrivate::active_window, true); - if (w) { - w->setFocus(Qt::ActiveWindowFocusReason); - } else { - // If the focus widget is not in the activate_window, clear the focus - w = QApplicationPrivate::focus_widget; - if (!w && QApplicationPrivate::active_window->focusPolicy() != Qt::NoFocus) - QApplicationPrivate::setFocusWidget(QApplicationPrivate::active_window, Qt::ActiveWindowFocusReason); - else if (!QApplicationPrivate::active_window->isAncestorOf(w)) - QApplicationPrivate::setFocusWidget(0, Qt::ActiveWindowFocusReason); - } - } - } - } -} - -/*!internal - * Helper function that returns the new focus widget, but does not set the focus reason. - * Returns 0 if a new focus widget could not be found. - * Shared with QGraphicsProxyWidgetPrivate::findFocusChild() -*/ -QWidget *QApplicationPrivate::focusNextPrevChild_helper(QWidget *toplevel, bool next) -{ - uint focus_flag = qt_tab_all_widgets ? Qt::TabFocus : Qt::StrongFocus; - - QWidget *f = toplevel->focusWidget(); - if (!f) - f = toplevel; - - QWidget *w = f; - QWidget *test = f->d_func()->focus_next; - while (test && test != f) { - if ((test->focusPolicy() & focus_flag) == focus_flag - && !(test->d_func()->extra && test->d_func()->extra->focus_proxy) - && test->isVisibleTo(toplevel) && test->isEnabled() - && !(w->windowType() == Qt::SubWindow && !w->isAncestorOf(test)) - && (toplevel->windowType() != Qt::SubWindow || toplevel->isAncestorOf(test))) { - w = test; - if (next) - break; - } - test = test->d_func()->focus_next; - } - if (w == f) { - if (qt_in_tab_key_event) { - w->window()->setAttribute(Qt::WA_KeyboardFocusChange); - w->update(); - } - return 0; - } - return w; -} - -/*! - \fn void QApplicationPrivate::dispatchEnterLeave(QWidget* enter, QWidget* leave) - \internal - - Creates the proper Enter/Leave event when widget \a enter is entered and - widget \a leave is left. - */ -void QApplicationPrivate::dispatchEnterLeave(QWidget* enter, QWidget* leave) { -#if 0 - if (leave) { - QEvent e(QEvent::Leave); - QApplication::sendEvent(leave, & e); - } - if (enter) { - QEvent e(QEvent::Enter); - QApplication::sendEvent(enter, & e); - } - return; -#endif - - QWidget* w ; - if ((!enter && !leave) || (enter == leave)) - return; -#ifdef ALIEN_DEBUG - qDebug() << "QApplicationPrivate::dispatchEnterLeave, ENTER:" << enter << "LEAVE:" << leave; -#endif - QWidgetList leaveList; - QWidgetList enterList; - - bool sameWindow = leave && enter && leave->window() == enter->window(); - if (leave && !sameWindow) { - w = leave; - do { - leaveList.append(w); - } while (!w->isWindow() && (w = w->parentWidget())); - } - if (enter && !sameWindow) { - w = enter; - do { - enterList.prepend(w); - } while (!w->isWindow() && (w = w->parentWidget())); - } - if (sameWindow) { - int enterDepth = 0; - int leaveDepth = 0; - w = enter; - while (!w->isWindow() && (w = w->parentWidget())) - enterDepth++; - w = leave; - while (!w->isWindow() && (w = w->parentWidget())) - leaveDepth++; - QWidget* wenter = enter; - QWidget* wleave = leave; - while (enterDepth > leaveDepth) { - wenter = wenter->parentWidget(); - enterDepth--; - } - while (leaveDepth > enterDepth) { - wleave = wleave->parentWidget(); - leaveDepth--; - } - while (!wenter->isWindow() && wenter != wleave) { - wenter = wenter->parentWidget(); - wleave = wleave->parentWidget(); - } - - w = leave; - while (w != wleave) { - leaveList.append(w); - w = w->parentWidget(); - } - w = enter; - while (w != wenter) { - enterList.prepend(w); - w = w->parentWidget(); - } - } - - QEvent leaveEvent(QEvent::Leave); - for (int i = 0; i < leaveList.size(); ++i) { - w = leaveList.at(i); - if (!QApplication::activeModalWidget() || QApplicationPrivate::tryModalHelper(w, 0)) { -#if defined(Q_WS_WIN) || defined(Q_WS_X11) || defined(Q_WS_MAC) - if (leaveAfterRelease == w) - leaveAfterRelease = 0; -#endif - QApplication::sendEvent(w, &leaveEvent); - if (w->testAttribute(Qt::WA_Hover) && - (!QApplication::activePopupWidget() || QApplication::activePopupWidget() == w->window())) { - Q_ASSERT(instance()); - QHoverEvent he(QEvent::HoverLeave, QPoint(-1, -1), w->mapFromGlobal(QApplicationPrivate::instance()->hoverGlobalPos)); - qApp->d_func()->notify_helper(w, &he); - } - } - } - QPoint posEnter = QCursor::pos(); - QEvent enterEvent(QEvent::Enter); - for (int i = 0; i < enterList.size(); ++i) { - w = enterList.at(i); - if (!QApplication::activeModalWidget() || QApplicationPrivate::tryModalHelper(w, 0)) { - QApplication::sendEvent(w, &enterEvent); - if (w->testAttribute(Qt::WA_Hover) && - (!QApplication::activePopupWidget() || QApplication::activePopupWidget() == w->window())) { - QHoverEvent he(QEvent::HoverEnter, w->mapFromGlobal(posEnter), QPoint(-1, -1)); - qApp->d_func()->notify_helper(w, &he); - } - } - } - -#ifndef QT_NO_CURSOR - // Update cursor for alien/graphics widgets. - - const bool enterOnAlien = (enter && (isAlien(enter) || enter->testAttribute(Qt::WA_DontShowOnScreen))); -#if defined(Q_WS_X11) || defined(Q_WS_QPA) - //Whenever we leave an alien widget on X11, we need to reset its nativeParentWidget()'s cursor. - // This is not required on Windows as the cursor is reset on every single mouse move. - QWidget *parentOfLeavingCursor = 0; - for (int i = 0; i < leaveList.size(); ++i) { - w = leaveList.at(i); - if (!isAlien(w)) - break; - if (w->testAttribute(Qt::WA_SetCursor)) { - QWidget *parent = w->parentWidget(); - while (parent && parent->d_func()->data.in_destructor) - parent = parent->parentWidget(); - parentOfLeavingCursor = parent; - //continue looping, we need to find the downest alien widget with a cursor. - // (downest on the screen) - } - } - //check that we will not call qt_x11_enforce_cursor twice with the same native widget - if (parentOfLeavingCursor && (!enterOnAlien - || parentOfLeavingCursor->effectiveWinId() != enter->effectiveWinId())) { -#ifndef QT_NO_GRAPHICSVIEW - if (!parentOfLeavingCursor->window()->graphicsProxyWidget()) -#endif - { -#if defined(Q_WS_X11) - qt_x11_enforce_cursor(parentOfLeavingCursor,true); -#elif defined(Q_WS_QPA) - if (enter == QApplication::desktop()) { - qt_qpa_set_cursor(enter, true); - } else { - qt_qpa_set_cursor(parentOfLeavingCursor, true); - } -#endif - } - } -#endif - if (enterOnAlien) { - QWidget *cursorWidget = enter; - while (!cursorWidget->isWindow() && !cursorWidget->isEnabled()) - cursorWidget = cursorWidget->parentWidget(); - - if (!cursorWidget) - return; - -#ifndef QT_NO_GRAPHICSVIEW - if (cursorWidget->window()->graphicsProxyWidget()) { - QWidgetPrivate::nearestGraphicsProxyWidget(cursorWidget)->setCursor(cursorWidget->cursor()); - } else -#endif - { -#if defined(Q_WS_WIN) - qt_win_set_cursor(cursorWidget, true); -#elif defined(Q_WS_X11) - qt_x11_enforce_cursor(cursorWidget, true); -#elif defined(Q_OS_SYMBIAN) - qt_symbian_set_cursor(cursorWidget, true); -#elif defined(Q_WS_QPA) - qt_qpa_set_cursor(cursorWidget, true); -#endif - } - } -#endif -} - -/* exported for the benefit of testing tools */ -Q_GUI_EXPORT bool qt_tryModalHelper(QWidget *widget, QWidget **rettop) -{ - return QApplicationPrivate::tryModalHelper(widget, rettop); -} - -/*! \internal - Returns true if \a widget is blocked by a modal window. - */ -bool QApplicationPrivate::isBlockedByModal(QWidget *widget) -{ - widget = widget->window(); - if (!modalState()) - return false; - if (QApplication::activePopupWidget() == widget) - return false; - - for (int i = 0; i < qt_modal_stack->size(); ++i) { - QWidget *modalWidget = qt_modal_stack->at(i); - - { - // check if the active modal widget is our widget or a parent of our widget - QWidget *w = widget; - while (w) { - if (w == modalWidget) - return false; - w = w->parentWidget(); - } -#ifdef Q_WS_WIN - if ((widget->testAttribute(Qt::WA_WState_Created) || widget->data->winid) - && (modalWidget->testAttribute(Qt::WA_WState_Created) || modalWidget->data->winid) - && IsChild(modalWidget->data->winid, widget->data->winid)) - return false; -#endif - } - - Qt::WindowModality windowModality = modalWidget->windowModality(); - if (windowModality == Qt::NonModal) { - // determine the modality type if it hasn't been set on the - // modalWidget, this normally happens when waiting for a - // native dialog. use WindowModal if we are the child of a - // group leader; otherwise use ApplicationModal. - QWidget *m = modalWidget; - while (m && !m->testAttribute(Qt::WA_GroupLeader)) { - m = m->parentWidget(); - if (m) - m = m->window(); - } - windowModality = (m && m->testAttribute(Qt::WA_GroupLeader)) - ? Qt::WindowModal - : Qt::ApplicationModal; - } - - switch (windowModality) { - case Qt::ApplicationModal: - { - QWidget *groupLeaderForWidget = widget; - while (groupLeaderForWidget && !groupLeaderForWidget->testAttribute(Qt::WA_GroupLeader)) - groupLeaderForWidget = groupLeaderForWidget->parentWidget(); - - if (groupLeaderForWidget) { - // if \a widget has WA_GroupLeader, it can only be blocked by ApplicationModal children - QWidget *m = modalWidget; - while (m && m != groupLeaderForWidget && !m->testAttribute(Qt::WA_GroupLeader)) - m = m->parentWidget(); - if (m == groupLeaderForWidget) - return true; - } else if (modalWidget != widget) { - return true; - } - break; - } - case Qt::WindowModal: - { - QWidget *w = widget; - do { - QWidget *m = modalWidget; - do { - if (m == w) - return true; - m = m->parentWidget(); - if (m) - m = m->window(); - } while (m); - w = w->parentWidget(); - if (w) - w = w->window(); - } while (w); - break; - } - default: - Q_ASSERT_X(false, "QApplication", "internal error, a modal widget cannot be modeless"); - break; - } - } - return false; -} - -/*!\internal - */ -void QApplicationPrivate::enterModal(QWidget *widget) -{ - QSet<QWidget*> blocked; - QList<QWidget*> windows = QApplication::topLevelWidgets(); - for (int i = 0; i < windows.count(); ++i) { - QWidget *window = windows.at(i); - if (window->windowType() != Qt::Tool && isBlockedByModal(window)) - blocked.insert(window); - } - - enterModal_sys(widget); - - windows = QApplication::topLevelWidgets(); - QEvent e(QEvent::WindowBlocked); - for (int i = 0; i < windows.count(); ++i) { - QWidget *window = windows.at(i); - if (!blocked.contains(window) && window->windowType() != Qt::Tool && isBlockedByModal(window)) - QApplication::sendEvent(window, &e); - } -} - -/*!\internal - */ -void QApplicationPrivate::leaveModal(QWidget *widget) -{ - QSet<QWidget*> blocked; - QList<QWidget*> windows = QApplication::topLevelWidgets(); - for (int i = 0; i < windows.count(); ++i) { - QWidget *window = windows.at(i); - if (window->windowType() != Qt::Tool && isBlockedByModal(window)) - blocked.insert(window); - } - - leaveModal_sys(widget); - - windows = QApplication::topLevelWidgets(); - QEvent e(QEvent::WindowUnblocked); - for (int i = 0; i < windows.count(); ++i) { - QWidget *window = windows.at(i); - if(blocked.contains(window) && window->windowType() != Qt::Tool && !isBlockedByModal(window)) - QApplication::sendEvent(window, &e); - } -} - - - -/*!\internal - - Called from qapplication_\e{platform}.cpp, returns true - if the widget should accept the event. - */ -bool QApplicationPrivate::tryModalHelper(QWidget *widget, QWidget **rettop) -{ - QWidget *top = QApplication::activeModalWidget(); - if (rettop) - *rettop = top; - - // the active popup widget always gets the input event - if (QApplication::activePopupWidget()) - return true; - -#if defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA) - top = QApplicationPrivate::tryModalHelper_sys(top); - if (rettop) - *rettop = top; -#endif - - return !isBlockedByModal(widget->window()); -} - -/* - \internal -*/ -QWidget *QApplicationPrivate::pickMouseReceiver(QWidget *candidate, const QPoint &globalPos, - QPoint &pos, QEvent::Type type, - Qt::MouseButtons buttons, QWidget *buttonDown, - QWidget *alienWidget) -{ - Q_ASSERT(candidate); - - QWidget *mouseGrabber = QWidget::mouseGrabber(); - if (((type == QEvent::MouseMove && buttons) || (type == QEvent::MouseButtonRelease)) - && !buttonDown && !mouseGrabber) { - return 0; - } - - if (alienWidget && alienWidget->internalWinId()) - alienWidget = 0; - - QWidget *receiver = candidate; - - if (!mouseGrabber) - mouseGrabber = (buttonDown && !isBlockedByModal(buttonDown)) ? buttonDown : alienWidget; - - if (mouseGrabber && mouseGrabber != candidate) { - receiver = mouseGrabber; - pos = receiver->mapFromGlobal(globalPos); -#ifdef ALIEN_DEBUG - qDebug() << " ** receiver adjusted to:" << receiver << "pos:" << pos; -#endif - } - - return receiver; - -} - -/* - \internal -*/ -bool QApplicationPrivate::sendMouseEvent(QWidget *receiver, QMouseEvent *event, - QWidget *alienWidget, QWidget *nativeWidget, - QWidget **buttonDown, QPointer<QWidget> &lastMouseReceiver, - bool spontaneous) -{ - Q_ASSERT(receiver); - Q_ASSERT(event); - Q_ASSERT(nativeWidget); - Q_ASSERT(buttonDown); - - if (alienWidget && !isAlien(alienWidget)) - alienWidget = 0; - - QPointer<QWidget> receiverGuard = receiver; - QPointer<QWidget> nativeGuard = nativeWidget; - QPointer<QWidget> alienGuard = alienWidget; - QPointer<QWidget> activePopupWidget = QApplication::activePopupWidget(); - - const bool graphicsWidget = nativeWidget->testAttribute(Qt::WA_DontShowOnScreen); - - if (*buttonDown) { - if (!graphicsWidget) { - // Register the widget that shall receive a leave event - // after the last button is released. - if ((alienWidget || !receiver->internalWinId()) && !leaveAfterRelease && !QWidget::mouseGrabber()) - leaveAfterRelease = *buttonDown; - if (event->type() == QEvent::MouseButtonRelease && !event->buttons()) - *buttonDown = 0; - } - } else if (lastMouseReceiver) { - // Dispatch enter/leave if we move: - // 1) from an alien widget to another alien widget or - // from a native widget to an alien widget (first OR case) - // 2) from an alien widget to a native widget (second OR case) - if ((alienWidget && alienWidget != lastMouseReceiver) - || (isAlien(lastMouseReceiver) && !alienWidget)) { - if (activePopupWidget) { - if (!QWidget::mouseGrabber()) - dispatchEnterLeave(alienWidget ? alienWidget : nativeWidget, lastMouseReceiver); - } else { - dispatchEnterLeave(receiver, lastMouseReceiver); - } - - } - } - -#ifdef ALIEN_DEBUG - qDebug() << "QApplicationPrivate::sendMouseEvent: receiver:" << receiver - << "pos:" << event->pos() << "alien" << alienWidget << "button down" - << *buttonDown << "last" << lastMouseReceiver << "leave after release" - << leaveAfterRelease; -#endif - - // We need this quard in case someone opens a modal dialog / popup. If that's the case - // leaveAfterRelease is set to null, but we shall not update lastMouseReceiver. - const bool wasLeaveAfterRelease = leaveAfterRelease != 0; - bool result; - if (spontaneous) - result = QApplication::sendSpontaneousEvent(receiver, event); - else - result = QApplication::sendEvent(receiver, event); - - if (!graphicsWidget && leaveAfterRelease && event->type() == QEvent::MouseButtonRelease - && !event->buttons() && QWidget::mouseGrabber() != leaveAfterRelease) { - // Dispatch enter/leave if: - // 1) the mouse grabber is an alien widget - // 2) the button is released on an alien widget - QWidget *enter = 0; - if (nativeGuard) - enter = alienGuard ? alienWidget : nativeWidget; - else // The receiver is typically deleted on mouse release with drag'n'drop. - enter = QApplication::widgetAt(event->globalPos()); - dispatchEnterLeave(enter, leaveAfterRelease); - leaveAfterRelease = 0; - lastMouseReceiver = enter; - } else if (!wasLeaveAfterRelease) { - if (activePopupWidget) { - if (!QWidget::mouseGrabber()) - lastMouseReceiver = alienGuard ? alienWidget : (nativeGuard ? nativeWidget : 0); - } else { - lastMouseReceiver = receiverGuard ? receiver : QApplication::widgetAt(event->globalPos()); - } - } - - return result; -} - -#if defined(Q_WS_WIN) || defined(Q_WS_X11) || defined(Q_WS_QWS) || defined(Q_WS_MAC) || defined(Q_WS_QPA) -/* - This function should only be called when the widget changes visibility, i.e. - when the \a widget is shown, hidden or deleted. This function does nothing - if the widget is a top-level or native, i.e. not an alien widget. In that - case enter/leave events are genereated by the underlying windowing system. -*/ -extern QPointer<QWidget> qt_last_mouse_receiver; -extern QWidget *qt_button_down; -void QApplicationPrivate::sendSyntheticEnterLeave(QWidget *widget) -{ -#ifndef QT_NO_CURSOR -#if defined(Q_WS_QWS) || defined(Q_WS_QPA) - if (!widget || widget->isWindow()) - return; -#else - if (!widget || widget->internalWinId() || widget->isWindow()) - return; -#endif - const bool widgetInShow = widget->isVisible() && !widget->data->in_destructor; - if (!widgetInShow && widget != qt_last_mouse_receiver) - return; // Widget was not under the cursor when it was hidden/deleted. - - if (widgetInShow && widget->parentWidget()->data->in_show) - return; // Ingore recursive show. - - QWidget *mouseGrabber = QWidget::mouseGrabber(); - if (mouseGrabber && mouseGrabber != widget) - return; // Someone else has the grab; enter/leave should not occur. - - QWidget *tlw = widget->window(); - if (tlw->data->in_destructor || tlw->data->is_closing) - return; // Closing down the business. - - if (widgetInShow && (!qt_last_mouse_receiver || qt_last_mouse_receiver->window() != tlw)) - return; // Mouse cursor not inside the widget's top-level. - - const QPoint globalPos(QCursor::pos()); - QPoint pos = tlw->mapFromGlobal(globalPos); - - // Find the current widget under the mouse. If this function was called from - // the widget's destructor, we have to make sure childAt() doesn't take into - // account widgets that are about to be destructed. - QWidget *widgetUnderCursor = tlw->d_func()->childAt_helper(pos, widget->data->in_destructor); - if (!widgetUnderCursor) - widgetUnderCursor = tlw; - else - pos = widgetUnderCursor->mapFrom(tlw, pos); - - if (widgetInShow && widgetUnderCursor != widget && !widget->isAncestorOf(widgetUnderCursor)) - return; // Mouse cursor not inside the widget or any of its children. - - if (widget->data->in_destructor && qt_button_down == widget) - qt_button_down = 0; - - // Send enter/leave events followed by a mouse move on the entered widget. - QMouseEvent e(QEvent::MouseMove, pos, globalPos, Qt::NoButton, Qt::NoButton, Qt::NoModifier); - sendMouseEvent(widgetUnderCursor, &e, widgetUnderCursor, tlw, &qt_button_down, qt_last_mouse_receiver); -#endif // QT_NO_CURSOR -} -#endif // Q_WS_WIN || Q_WS_X11 || Q_WS_MAC - -/*! - Returns the desktop widget (also called the root window). - - The desktop may be composed of multiple screens, so it would be incorrect, - for example, to attempt to \e center some widget in the desktop's geometry. - QDesktopWidget has various functions for obtaining useful geometries upon - the desktop, such as QDesktopWidget::screenGeometry() and - QDesktopWidget::availableGeometry(). - - On X11, it is also possible to draw on the desktop. -*/ -QDesktopWidget *QApplication::desktop() -{ - if (!qt_desktopWidget || // not created yet - !(qt_desktopWidget->windowType() == Qt::Desktop)) { // reparented away - qt_desktopWidget = new QDesktopWidget(); - } - return qt_desktopWidget; -} - -#ifndef QT_NO_CLIPBOARD -/*! - Returns a pointer to the application global clipboard. - - \note The QApplication object should already be constructed before - accessing the clipboard. -*/ -QClipboard *QApplication::clipboard() -{ - if (qt_clipboard == 0) { - if (!qApp) { - qWarning("QApplication: Must construct a QApplication before accessing a QClipboard"); - return 0; - } - qt_clipboard = new QClipboard(0); - } - return qt_clipboard; -} -#endif // QT_NO_CLIPBOARD - -/*! - Sets whether Qt should use the system's standard colors, fonts, etc., to - \a on. By default, this is true. - - This function must be called before creating the QApplication object, like - this: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 6 - - \sa desktopSettingsAware() -*/ -void QApplication::setDesktopSettingsAware(bool on) -{ - QApplicationPrivate::obey_desktop_settings = on; -} - -/*! - Returns true if Qt is set to use the system's standard colors, fonts, etc.; - otherwise returns false. The default is true. - - \sa setDesktopSettingsAware() -*/ -bool QApplication::desktopSettingsAware() -{ - return QApplicationPrivate::obey_desktop_settings; -} - -/*! - Returns the current state of the modifier keys on the keyboard. The current - state is updated sychronously as the event queue is emptied of events that - will spontaneously change the keyboard state (QEvent::KeyPress and - QEvent::KeyRelease events). - - It should be noted this may not reflect the actual keys held on the input - device at the time of calling but rather the modifiers as last reported in - one of the above events. If no keys are being held Qt::NoModifier is - returned. - - \sa mouseButtons() -*/ - -Qt::KeyboardModifiers QApplication::keyboardModifiers() -{ - return QApplicationPrivate::modifier_buttons; -} - -/*! - Returns the current state of the buttons on the mouse. The current state is - updated syncronously as the event queue is emptied of events that will - spontaneously change the mouse state (QEvent::MouseButtonPress and - QEvent::MouseButtonRelease events). - - It should be noted this may not reflect the actual buttons held on the - input device at the time of calling but rather the mouse buttons as last - reported in one of the above events. If no mouse buttons are being held - Qt::NoButton is returned. - - \sa keyboardModifiers() -*/ - -Qt::MouseButtons QApplication::mouseButtons() -{ - return QApplicationPrivate::mouse_buttons; -} - -/*! - \fn bool QApplication::isSessionRestored() const - - Returns true if the application has been restored from an earlier - \l{Session Management}{session}; otherwise returns false. - - \sa sessionId(), commitData(), saveState() -*/ - - -/*! - \fn QString QApplication::sessionId() const - - Returns the current \l{Session Management}{session's} identifier. - - If the application has been restored from an earlier session, this - identifier is the same as it was in that previous session. The session - identifier is guaranteed to be unique both for different applications - and for different instances of the same application. - - \sa isSessionRestored(), sessionKey(), commitData(), saveState() -*/ - -/*! - \fn QString QApplication::sessionKey() const - - Returns the session key in the current \l{Session Management}{session}. - - If the application has been restored from an earlier session, this key is - the same as it was when the previous session ended. - - The session key changes with every call of commitData() or saveState(). - - \sa isSessionRestored(), sessionId(), commitData(), saveState() -*/ -#ifndef QT_NO_SESSIONMANAGER -bool QApplication::isSessionRestored() const -{ - Q_D(const QApplication); - return d->is_session_restored; -} - -QString QApplication::sessionId() const -{ - Q_D(const QApplication); - return d->session_id; -} - -QString QApplication::sessionKey() const -{ - Q_D(const QApplication); - return d->session_key; -} -#endif - - - -/*! - \since 4.2 - \fn void QApplication::commitDataRequest(QSessionManager &manager) - - This signal deals with \l{Session Management}{session management}. It is - emitted when the QSessionManager wants the application to commit all its - data. - - Usually this means saving all open files, after getting permission from - the user. Furthermore you may want to provide a means by which the user - can cancel the shutdown. - - You should not exit the application within this signal. Instead, - the session manager may or may not do this afterwards, depending on the - context. - - \warning Within this signal, no user interaction is possible, \e - unless you ask the \a manager for explicit permission. See - QSessionManager::allowsInteraction() and - QSessionManager::allowsErrorInteraction() for details and example - usage. - - \note You should use Qt::DirectConnection when connecting to this signal. - - \sa isSessionRestored(), sessionId(), saveState(), {Session Management} -*/ - -/*! - This function deals with \l{Session Management}{session management}. It is - invoked when the QSessionManager wants the application to commit all its - data. - - Usually this means saving all open files, after getting permission from the - user. Furthermore you may want to provide a means by which the user can - cancel the shutdown. - - You should not exit the application within this function. Instead, the - session manager may or may not do this afterwards, depending on the - context. - - \warning Within this function, no user interaction is possible, \e - unless you ask the \a manager for explicit permission. See - QSessionManager::allowsInteraction() and - QSessionManager::allowsErrorInteraction() for details and example - usage. - - The default implementation requests interaction and sends a close event to - all visible top-level widgets. If any event was rejected, the shutdown is - canceled. - - \sa isSessionRestored(), sessionId(), saveState(), {Session Management} -*/ -#ifndef QT_NO_SESSIONMANAGER -void QApplication::commitData(QSessionManager& manager ) -{ - emit commitDataRequest(manager); - if (manager.allowsInteraction()) { - QWidgetList done; - QWidgetList list = QApplication::topLevelWidgets(); - bool cancelled = false; - for (int i = 0; !cancelled && i < list.size(); ++i) { - QWidget* w = list.at(i); - if (w->isVisible() && !done.contains(w)) { - cancelled = !w->close(); - if (!cancelled) - done.append(w); - list = QApplication::topLevelWidgets(); - i = -1; - } - } - if (cancelled) - manager.cancel(); - } -} - -/*! - \since 4.2 - \fn void QApplication::saveStateRequest(QSessionManager &manager) - - This signal deals with \l{Session Management}{session management}. It is - invoked when the \l{QSessionManager}{session manager} wants the application - to preserve its state for a future session. - - For example, a text editor would create a temporary file that includes the - current contents of its edit buffers, the location of the cursor and other - aspects of the current editing session. - - You should never exit the application within this signal. Instead, the - session manager may or may not do this afterwards, depending on the - context. Futhermore, most session managers will very likely request a saved - state immediately after the application has been started. This permits the - session manager to learn about the application's restart policy. - - \warning Within this function, no user interaction is possible, \e - unless you ask the \a manager for explicit permission. See - QSessionManager::allowsInteraction() and - QSessionManager::allowsErrorInteraction() for details. - - \note You should use Qt::DirectConnection when connecting to this signal. - - \sa isSessionRestored(), sessionId(), commitData(), {Session Management} -*/ - -/*! - This function deals with \l{Session Management}{session management}. It is - invoked when the \l{QSessionManager}{session manager} wants the application - to preserve its state for a future session. - - For example, a text editor would create a temporary file that includes the - current contents of its edit buffers, the location of the cursor and other - aspects of the current editing session. - - You should never exit the application within this function. Instead, the - session manager may or may not do this afterwards, depending on the - context. Futhermore, most session managers will very likely request a saved - state immediately after the application has been started. This permits the - session manager to learn about the application's restart policy. - - \warning Within this function, no user interaction is possible, \e - unless you ask the \a manager for explicit permission. See - QSessionManager::allowsInteraction() and - QSessionManager::allowsErrorInteraction() for details. - - \sa isSessionRestored(), sessionId(), commitData(), {Session Management} -*/ - -void QApplication::saveState(QSessionManager &manager) -{ - emit saveStateRequest(manager); -} -#endif //QT_NO_SESSIONMANAGER -/* - Sets the time after which a drag should start to \a ms ms. - - \sa startDragTime() -*/ - -void QApplication::setStartDragTime(int ms) -{ - drag_time = ms; -} - -/*! - \property QApplication::startDragTime - \brief the time in milliseconds that a mouse button must be held down - before a drag and drop operation will begin - - If you support drag and drop in your application, and want to start a drag - and drop operation after the user has held down a mouse button for a - certain amount of time, you should use this property's value as the delay. - - Qt also uses this delay internally, e.g. in QTextEdit and QLineEdit, for - starting a drag. - - The default value is 500 ms. - - \sa startDragDistance(), {Drag and Drop} -*/ - -int QApplication::startDragTime() -{ - return drag_time; -} - -/* - Sets the distance after which a drag should start to \a l pixels. - - \sa startDragDistance() -*/ - -void QApplication::setStartDragDistance(int l) -{ - drag_distance = l; -} - -/*! - \property QApplication::startDragDistance - - If you support drag and drop in your application, and want to start a drag - and drop operation after the user has moved the cursor a certain distance - with a button held down, you should use this property's value as the - minimum distance required. - - For example, if the mouse position of the click is stored in \c startPos - and the current position (e.g. in the mouse move event) is \c currentPos, - you can find out if a drag should be started with code like this: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 7 - - Qt uses this value internally, e.g. in QFileDialog. - - The default value is 4 pixels. - - \sa startDragTime() QPoint::manhattanLength() {Drag and Drop} -*/ - -int QApplication::startDragDistance() -{ - return drag_distance; -} - -/*! - \fn void QApplication::setReverseLayout(bool reverse) - - Use setLayoutDirection() instead. -*/ - -/*! - \fn void QApplication::reverseLayout() - - Use layoutDirection() instead. -*/ - -/*! - \fn bool QApplication::isRightToLeft() - - Returns true if the application's layout direction is - Qt::RightToLeft; otherwise returns false. - - \sa layoutDirection(), isLeftToRight() -*/ - -/*! - \fn bool QApplication::isLeftToRight() - - Returns true if the application's layout direction is - Qt::LeftToRight; otherwise returns false. - - \sa layoutDirection(), isRightToLeft() -*/ - -/*! - \property QApplication::layoutDirection - \brief the default layout direction for this application - - On system start-up, the default layout direction depends on the - application's language. - - \sa QWidget::layoutDirection, isLeftToRight(), isRightToLeft() - */ - -void QApplication::setLayoutDirection(Qt::LayoutDirection direction) -{ - if (layout_direction == direction || direction == Qt::LayoutDirectionAuto) - return; - - layout_direction = direction; - - QWidgetList list = topLevelWidgets(); - for (int i = 0; i < list.size(); ++i) { - QWidget *w = list.at(i); - QEvent ev(QEvent::ApplicationLayoutDirectionChange); - sendEvent(w, &ev); - } -} - -Qt::LayoutDirection QApplication::layoutDirection() -{ - return layout_direction; -} - - -/*! - \obsolete - - Strips out vertical alignment flags and transforms an alignment \a align - of Qt::AlignLeft into Qt::AlignLeft or Qt::AlignRight according to the - language used. -*/ - -#ifdef QT3_SUPPORT -Qt::Alignment QApplication::horizontalAlignment(Qt::Alignment align) -{ - return QStyle::visualAlignment(layoutDirection(), align); -} -#endif - - -/*! - \fn QCursor *QApplication::overrideCursor() - - Returns the active application override cursor. - - This function returns 0 if no application cursor has been defined (i.e. the - internal cursor stack is empty). - - \sa setOverrideCursor(), restoreOverrideCursor() -*/ -#ifndef QT_NO_CURSOR -QCursor *QApplication::overrideCursor() -{ - return qApp->d_func()->cursor_list.isEmpty() ? 0 : &qApp->d_func()->cursor_list.first(); -} - -/*! - Changes the currently active application override cursor to \a cursor. - - This function has no effect if setOverrideCursor() was not called. - - \sa setOverrideCursor(), overrideCursor(), restoreOverrideCursor(), - QWidget::setCursor() - */ -void QApplication::changeOverrideCursor(const QCursor &cursor) -{ - if (qApp->d_func()->cursor_list.isEmpty()) - return; - qApp->d_func()->cursor_list.removeFirst(); - setOverrideCursor(cursor); -} -#endif - -/*! - \fn void QApplication::setOverrideCursor(const QCursor &cursor, bool replace) - - Use changeOverrideCursor(\a cursor) (if \a replace is true) or - setOverrideCursor(\a cursor) (if \a replace is false). -*/ - -/*! - Enters the main event loop and waits until exit() is called, then returns - the value that was set to exit() (which is 0 if exit() is called via - quit()). - - It is necessary to call this function to start event handling. The main - event loop receives events from the window system and dispatches these to - the application widgets. - - Generally, no user interaction can take place before calling exec(). As a - special case, modal widgets like QMessageBox can be used before calling - exec(), because modal widgets call exec() to start a local event loop. - - To make your application perform idle processing, i.e., executing a special - function whenever there are no pending events, use a QTimer with 0 timeout. - More advanced idle processing schemes can be achieved using processEvents(). - - We recommend that you connect clean-up code to the - \l{QCoreApplication::}{aboutToQuit()} signal, instead of putting it in your - application's \c{main()} function. This is because, on some platforms the - QApplication::exec() call may not return. For example, on the Windows - platform, when the user logs off, the system terminates the process after Qt - closes all top-level windows. Hence, there is \e{no guarantee} that the - application will have time to exit its event loop and execute code at the - end of the \c{main()} function, after the QApplication::exec() call. - - \sa quitOnLastWindowClosed, quit(), exit(), processEvents(), - QCoreApplication::exec() -*/ -int QApplication::exec() -{ -#ifndef QT_NO_ACCESSIBILITY - QAccessible::setRootObject(qApp); -#endif - return QCoreApplication::exec(); -} - -/*! \reimp - */ -bool QApplication::notify(QObject *receiver, QEvent *e) -{ - Q_D(QApplication); - // no events are delivered after ~QCoreApplication() has started - if (QApplicationPrivate::is_app_closing) - return true; - - if (receiver == 0) { // serious error - qWarning("QApplication::notify: Unexpected null receiver"); - return true; - } - -#ifndef QT_NO_DEBUG - d->checkReceiverThread(receiver); -#endif - - // capture the current mouse/keyboard state - if(e->spontaneous()) { - if (e->type() == QEvent::KeyPress - || e->type() == QEvent::KeyRelease) { - QKeyEvent *ke = static_cast<QKeyEvent*>(e); - QApplicationPrivate::modifier_buttons = ke->modifiers(); - } else if(e->type() == QEvent::MouseButtonPress - || e->type() == QEvent::MouseButtonRelease) { - QMouseEvent *me = static_cast<QMouseEvent*>(e); - QApplicationPrivate::modifier_buttons = me->modifiers(); - if(me->type() == QEvent::MouseButtonPress) - QApplicationPrivate::mouse_buttons |= me->button(); - else - QApplicationPrivate::mouse_buttons &= ~me->button(); - } -#if !defined(QT_NO_WHEELEVENT) || !defined(QT_NO_TABLETEVENT) - else if (false -# ifndef QT_NO_WHEELEVENT - || e->type() == QEvent::Wheel -# endif -# ifndef QT_NO_TABLETEVENT - || e->type() == QEvent::TabletMove - || e->type() == QEvent::TabletPress - || e->type() == QEvent::TabletRelease -# endif - ) { - QInputEvent *ie = static_cast<QInputEvent*>(e); - QApplicationPrivate::modifier_buttons = ie->modifiers(); - } -#endif // !QT_NO_WHEELEVENT || !QT_NO_TABLETEVENT - } - -#ifndef QT_NO_GESTURES - // walk through parents and check for gestures - if (d->gestureManager) { - switch (e->type()) { - case QEvent::Paint: - case QEvent::MetaCall: - case QEvent::DeferredDelete: - case QEvent::DragEnter: case QEvent::DragMove: case QEvent::DragLeave: - case QEvent::Drop: case QEvent::DragResponse: - case QEvent::ChildAdded: case QEvent::ChildPolished: -#ifdef QT3_SUPPORT - case QEvent::ChildInsertedRequest: - case QEvent::ChildInserted: - case QEvent::LayoutHint: -#endif - case QEvent::ChildRemoved: - case QEvent::UpdateRequest: - case QEvent::UpdateLater: - case QEvent::AccessibilityPrepare: - case QEvent::LocaleChange: - case QEvent::Style: - case QEvent::IconDrag: - case QEvent::StyleChange: - case QEvent::AccessibilityHelp: - case QEvent::AccessibilityDescription: - case QEvent::GraphicsSceneDragEnter: - case QEvent::GraphicsSceneDragMove: - case QEvent::GraphicsSceneDragLeave: - case QEvent::GraphicsSceneDrop: - case QEvent::DynamicPropertyChange: - case QEvent::NetworkReplyUpdated: - break; - default: - if (receiver->isWidgetType()) { - if (d->gestureManager->filterEvent(static_cast<QWidget *>(receiver), e)) - return true; - } else { - // a special case for events that go to QGesture objects. - // We pass the object to the gesture manager and it'll figure - // out if it's QGesture or not. - if (d->gestureManager->filterEvent(receiver, e)) - return true; - } - } - } -#endif // QT_NO_GESTURES - - // User input and window activation makes tooltips sleep - switch (e->type()) { - case QEvent::Wheel: - case QEvent::ActivationChange: - case QEvent::KeyPress: - case QEvent::KeyRelease: - case QEvent::FocusOut: - case QEvent::FocusIn: - case QEvent::MouseButtonPress: - case QEvent::MouseButtonRelease: - case QEvent::MouseButtonDblClick: - d->toolTipFallAsleep.stop(); - // fall-through - case QEvent::Leave: - d->toolTipWakeUp.stop(); - default: - break; - } - - bool res = false; - if (!receiver->isWidgetType()) { - res = d->notify_helper(receiver, e); - } else switch (e->type()) { -#if defined QT3_SUPPORT && !defined(QT_NO_SHORTCUT) - case QEvent::Accel: - { - if (d->use_compat()) { - QKeyEvent* key = static_cast<QKeyEvent*>(e); - res = d->notify_helper(receiver, e); - - if (!res && !key->isAccepted()) - res = d->qt_dispatchAccelEvent(static_cast<QWidget *>(receiver), key); - - // next lines are for compatibility with Qt <= 3.0.x: old - // QAccel was listening on toplevel widgets - if (!res && !key->isAccepted() && !static_cast<QWidget *>(receiver)->isWindow()) - res = d->notify_helper(static_cast<QWidget *>(receiver)->window(), e); - } - break; - } -#endif //QT3_SUPPORT && !QT_NO_SHORTCUT - case QEvent::ShortcutOverride: - case QEvent::KeyPress: - case QEvent::KeyRelease: - { - bool isWidget = receiver->isWidgetType(); - bool isGraphicsWidget = false; -#ifndef QT_NO_GRAPHICSVIEW - isGraphicsWidget = !isWidget && qobject_cast<QGraphicsWidget *>(receiver); -#endif - if (!isWidget && !isGraphicsWidget) { - res = d->notify_helper(receiver, e); - break; - } - - QKeyEvent* key = static_cast<QKeyEvent*>(e); -#if defined QT3_SUPPORT && !defined(QT_NO_SHORTCUT) - if (d->use_compat() && d->qt_tryComposeUnicode(static_cast<QWidget*>(receiver), key)) - break; -#endif - if (key->type()==QEvent::KeyPress) { -#ifndef QT_NO_SHORTCUT - // Try looking for a Shortcut before sending key events - if ((res = qApp->d_func()->shortcutMap.tryShortcutEvent(receiver, key))) - return res; -#endif - qt_in_tab_key_event = (key->key() == Qt::Key_Backtab - || key->key() == Qt::Key_Tab - || key->key() == Qt::Key_Left - || key->key() == Qt::Key_Up - || key->key() == Qt::Key_Right - || key->key() == Qt::Key_Down); - } - bool def = key->isAccepted(); - QPointer<QObject> pr = receiver; - while (receiver) { - if (def) - key->accept(); - else - key->ignore(); - res = d->notify_helper(receiver, e); - QWidget *w = isWidget ? static_cast<QWidget *>(receiver) : 0; -#ifndef QT_NO_GRAPHICSVIEW - QGraphicsWidget *gw = isGraphicsWidget ? static_cast<QGraphicsWidget *>(receiver) : 0; -#endif - - if ((res && key->isAccepted()) - /* - QLineEdit will emit a signal on Key_Return, but - ignore the event, and sometimes the connected - slot deletes the QLineEdit (common in itemview - delegates), so we have to check if the widget - was destroyed even if the event was ignored (to - prevent a crash) - - note that we don't have to reset pw while - propagating (because the original receiver will - be destroyed if one of its ancestors is) - */ - || !pr - || (isWidget && (w->isWindow() || !w->parentWidget())) -#ifndef QT_NO_GRAPHICSVIEW - || (isGraphicsWidget && (gw->isWindow() || !gw->parentWidget())) -#endif - ) { - break; - } - -#ifndef QT_NO_GRAPHICSVIEW - receiver = w ? (QObject *)w->parentWidget() : (QObject *)gw->parentWidget(); -#else - receiver = w->parentWidget(); -#endif - } - qt_in_tab_key_event = false; - } - break; - case QEvent::MouseButtonPress: - case QEvent::MouseButtonRelease: - case QEvent::MouseButtonDblClick: - case QEvent::MouseMove: - { - QWidget* w = static_cast<QWidget *>(receiver); - - QMouseEvent* mouse = static_cast<QMouseEvent*>(e); - QPoint relpos = mouse->pos(); - - if (e->spontaneous()) { -#ifndef QT_NO_IM - QInputContext *ic = w->inputContext(); - if (ic - && w->testAttribute(Qt::WA_InputMethodEnabled) - && ic->filterEvent(mouse)) - return true; -#endif - - if (e->type() == QEvent::MouseButtonPress) { - QApplicationPrivate::giveFocusAccordingToFocusPolicy(w, - Qt::ClickFocus, - Qt::MouseFocusReason); - } - - // ### Qt 5 These dynamic tool tips should be an OPT-IN feature. Some platforms - // like Mac OS X (probably others too), can optimize their views by not - // dispatching mouse move events. We have attributes to control hover, - // and mouse tracking, but as long as we are deciding to implement this - // feature without choice of opting-in or out, you ALWAYS have to have - // tracking enabled. Therefore, the other properties give a false sense of - // performance enhancement. - if (e->type() == QEvent::MouseMove && mouse->buttons() == 0) { - d->toolTipWidget = w; - d->toolTipPos = relpos; - d->toolTipGlobalPos = mouse->globalPos(); - d->toolTipWakeUp.start(d->toolTipFallAsleep.isActive()?20:700, this); - } - } - - bool eventAccepted = mouse->isAccepted(); - - QPointer<QWidget> pw = w; - while (w) { - QMouseEvent me(mouse->type(), relpos, mouse->globalPos(), mouse->button(), mouse->buttons(), - mouse->modifiers()); - me.spont = mouse->spontaneous(); - // throw away any mouse-tracking-only mouse events - if (!w->hasMouseTracking() - && mouse->type() == QEvent::MouseMove && mouse->buttons() == 0) { - // but still send them through all application event filters (normally done by notify_helper) - for (int i = 0; i < d->eventFilters.size(); ++i) { - register QObject *obj = d->eventFilters.at(i); - if (!obj) - continue; - if (obj->d_func()->threadData != w->d_func()->threadData) { - qWarning("QApplication: Object event filter cannot be in a different thread."); - continue; - } - if (obj->eventFilter(w, w == receiver ? mouse : &me)) - break; - } - res = true; - } else { - w->setAttribute(Qt::WA_NoMouseReplay, false); - res = d->notify_helper(w, w == receiver ? mouse : &me); - e->spont = false; - } - eventAccepted = (w == receiver ? mouse : &me)->isAccepted(); - if (res && eventAccepted) - break; - if (w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) - break; - relpos += w->pos(); - w = w->parentWidget(); - } - - mouse->setAccepted(eventAccepted); - - if (e->type() == QEvent::MouseMove) { - if (!pw) - break; - - w = static_cast<QWidget *>(receiver); - relpos = mouse->pos(); - QPoint diff = relpos - w->mapFromGlobal(d->hoverGlobalPos); - while (w) { - if (w->testAttribute(Qt::WA_Hover) && - (!QApplication::activePopupWidget() || QApplication::activePopupWidget() == w->window())) { - QHoverEvent he(QEvent::HoverMove, relpos, relpos - diff); - d->notify_helper(w, &he); - } - if (w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) - break; - relpos += w->pos(); - w = w->parentWidget(); - } - } - - d->hoverGlobalPos = mouse->globalPos(); - } - break; -#ifndef QT_NO_WHEELEVENT - case QEvent::Wheel: - { - QWidget* w = static_cast<QWidget *>(receiver); - QWheelEvent* wheel = static_cast<QWheelEvent*>(e); - QPoint relpos = wheel->pos(); - bool eventAccepted = wheel->isAccepted(); - - if (e->spontaneous()) { - QApplicationPrivate::giveFocusAccordingToFocusPolicy(w, - Qt::WheelFocus, - Qt::MouseFocusReason); - } - - while (w) { - QWheelEvent we(relpos, wheel->globalPos(), wheel->delta(), wheel->buttons(), - wheel->modifiers(), wheel->orientation()); - we.spont = wheel->spontaneous(); - res = d->notify_helper(w, w == receiver ? wheel : &we); - eventAccepted = ((w == receiver) ? wheel : &we)->isAccepted(); - e->spont = false; - if ((res && eventAccepted) - || w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) - break; - - relpos += w->pos(); - w = w->parentWidget(); - } - wheel->setAccepted(eventAccepted); - } - break; -#endif -#ifndef QT_NO_CONTEXTMENU - case QEvent::ContextMenu: - { - QWidget* w = static_cast<QWidget *>(receiver); - QContextMenuEvent *context = static_cast<QContextMenuEvent*>(e); - QPoint relpos = context->pos(); - bool eventAccepted = context->isAccepted(); - while (w) { - QContextMenuEvent ce(context->reason(), relpos, context->globalPos(), context->modifiers()); - ce.spont = e->spontaneous(); - res = d->notify_helper(w, w == receiver ? context : &ce); - eventAccepted = ((w == receiver) ? context : &ce)->isAccepted(); - e->spont = false; - - if ((res && eventAccepted) - || w->isWindow() || w->testAttribute(Qt::WA_NoMousePropagation)) - break; - - relpos += w->pos(); - w = w->parentWidget(); - } - context->setAccepted(eventAccepted); - } - break; -#endif // QT_NO_CONTEXTMENU -#ifndef QT_NO_TABLETEVENT - case QEvent::TabletMove: - case QEvent::TabletPress: - case QEvent::TabletRelease: - { - QWidget *w = static_cast<QWidget *>(receiver); - QTabletEvent *tablet = static_cast<QTabletEvent*>(e); - QPoint relpos = tablet->pos(); - bool eventAccepted = tablet->isAccepted(); - while (w) { - QTabletEvent te(tablet->type(), relpos, tablet->globalPos(), - tablet->hiResGlobalPos(), tablet->device(), tablet->pointerType(), - tablet->pressure(), tablet->xTilt(), tablet->yTilt(), - tablet->tangentialPressure(), tablet->rotation(), tablet->z(), - tablet->modifiers(), tablet->uniqueId()); - te.spont = e->spontaneous(); - res = d->notify_helper(w, w == receiver ? tablet : &te); - eventAccepted = ((w == receiver) ? tablet : &te)->isAccepted(); - e->spont = false; - if ((res && eventAccepted) - || w->isWindow() - || w->testAttribute(Qt::WA_NoMousePropagation)) - break; - - relpos += w->pos(); - w = w->parentWidget(); - } - tablet->setAccepted(eventAccepted); - qt_tabletChokeMouse = tablet->isAccepted(); - } - break; -#endif // QT_NO_TABLETEVENT - -#if !defined(QT_NO_TOOLTIP) || !defined(QT_NO_WHATSTHIS) - case QEvent::ToolTip: - case QEvent::WhatsThis: - case QEvent::QueryWhatsThis: - { - QWidget* w = static_cast<QWidget *>(receiver); - QHelpEvent *help = static_cast<QHelpEvent*>(e); - QPoint relpos = help->pos(); - bool eventAccepted = help->isAccepted(); - while (w) { - QHelpEvent he(help->type(), relpos, help->globalPos()); - he.spont = e->spontaneous(); - res = d->notify_helper(w, w == receiver ? help : &he); - e->spont = false; - eventAccepted = (w == receiver ? help : &he)->isAccepted(); - if ((res && eventAccepted) || w->isWindow()) - break; - - relpos += w->pos(); - w = w->parentWidget(); - } - help->setAccepted(eventAccepted); - } - break; -#endif -#if !defined(QT_NO_STATUSTIP) || !defined(QT_NO_WHATSTHIS) - case QEvent::StatusTip: - case QEvent::WhatsThisClicked: - { - QWidget *w = static_cast<QWidget *>(receiver); - while (w) { - res = d->notify_helper(w, e); - if ((res && e->isAccepted()) || w->isWindow()) - break; - w = w->parentWidget(); - } - } - break; -#endif - -#ifndef QT_NO_DRAGANDDROP - case QEvent::DragEnter: { - QWidget* w = static_cast<QWidget *>(receiver); - QDragEnterEvent *dragEvent = static_cast<QDragEnterEvent *>(e); -#ifdef Q_WS_MAC - // HIView has a slight difference in how it delivers events to children and parents - // It will not give a leave to a child's parent when it enters a child. - QWidget *currentTarget = QDragManager::self()->currentTarget(); - if (currentTarget) { - // Assume currentTarget did not get a leave - QDragLeaveEvent event; - QApplication::sendEvent(currentTarget, &event); - } -#endif -#ifndef QT_NO_GRAPHICSVIEW - // QGraphicsProxyWidget handles its own propagation, - // and we must not change QDragManagers currentTarget. - QWExtra *extra = w->window()->d_func()->extra; - if (extra && extra->proxyWidget) { - res = d->notify_helper(w, dragEvent); - break; - } -#endif - while (w) { - if (w->isEnabled() && w->acceptDrops()) { - res = d->notify_helper(w, dragEvent); - if (res && dragEvent->isAccepted()) { - QDragManager::self()->setCurrentTarget(w); - break; - } - } - if (w->isWindow()) - break; - dragEvent->p = w->mapToParent(dragEvent->p); - w = w->parentWidget(); - } - } - break; - case QEvent::DragMove: - case QEvent::Drop: - case QEvent::DragLeave: { - QWidget* w = static_cast<QWidget *>(receiver); -#ifndef QT_NO_GRAPHICSVIEW - // QGraphicsProxyWidget handles its own propagation, - // and we must not change QDragManagers currentTarget. - QWExtra *extra = w->window()->d_func()->extra; - bool isProxyWidget = extra && extra->proxyWidget; - if (!isProxyWidget) -#endif - w = QDragManager::self()->currentTarget(); - - if (!w) { -#ifdef Q_WS_MAC - // HIView has a slight difference in how it delivers events to children and parents - // It will not give an enter to a child's parent when it leaves the child. - if (e->type() == QEvent::DragLeave) - break; - // Assume that w did not get an enter. - QDropEvent *dropEvent = static_cast<QDropEvent *>(e); - QDragEnterEvent dragEnterEvent(dropEvent->pos(), dropEvent->possibleActions(), - dropEvent->mimeData(), dropEvent->mouseButtons(), - dropEvent->keyboardModifiers()); - QApplication::sendEvent(receiver, &dragEnterEvent); - w = QDragManager::self()->currentTarget(); - if (!w) -#endif - break; - } - if (e->type() == QEvent::DragMove || e->type() == QEvent::Drop) { - QDropEvent *dragEvent = static_cast<QDropEvent *>(e); - QWidget *origReciver = static_cast<QWidget *>(receiver); - while (origReciver && w != origReciver) { - dragEvent->p = origReciver->mapToParent(dragEvent->p); - origReciver = origReciver->parentWidget(); - } - } - res = d->notify_helper(w, e); - if (e->type() != QEvent::DragMove -#ifndef QT_NO_GRAPHICSVIEW - && !isProxyWidget -#endif - ) - QDragManager::self()->setCurrentTarget(0, e->type() == QEvent::Drop); - } - break; -#endif - case QEvent::TouchBegin: - // Note: TouchUpdate and TouchEnd events are never propagated - { - QWidget *widget = static_cast<QWidget *>(receiver); - QTouchEvent *touchEvent = static_cast<QTouchEvent *>(e); - bool eventAccepted = touchEvent->isAccepted(); - if (widget->testAttribute(Qt::WA_AcceptTouchEvents) && e->spontaneous()) { - // give the widget focus if the focus policy allows it - QApplicationPrivate::giveFocusAccordingToFocusPolicy(widget, - Qt::ClickFocus, - Qt::MouseFocusReason); - } - - while (widget) { - // first, try to deliver the touch event - bool acceptTouchEvents = widget->testAttribute(Qt::WA_AcceptTouchEvents); - touchEvent->setWidget(widget); - touchEvent->setAccepted(acceptTouchEvents); - QWeakPointer<QWidget> p = widget; - res = acceptTouchEvents && d->notify_helper(widget, touchEvent); - eventAccepted = touchEvent->isAccepted(); - if (p.isNull()) { - // widget was deleted - widget = 0; - } else { - widget->setAttribute(Qt::WA_WState_AcceptedTouchBeginEvent, res && eventAccepted); - } - touchEvent->spont = false; - if (res && eventAccepted) { - // the first widget to accept the TouchBegin gets an implicit grab. - for (int i = 0; i < touchEvent->touchPoints().count(); ++i) { - const QTouchEvent::TouchPoint &touchPoint = touchEvent->touchPoints().at(i); - d->widgetForTouchPointId[touchPoint.id()] = widget; - } - break; - } else if (p.isNull() || widget->isWindow() || widget->testAttribute(Qt::WA_NoMousePropagation)) { - break; - } - QPoint offset = widget->pos(); - widget = widget->parentWidget(); - touchEvent->setWidget(widget); - for (int i = 0; i < touchEvent->_touchPoints.size(); ++i) { - QTouchEvent::TouchPoint &pt = touchEvent->_touchPoints[i]; - QRectF rect = pt.rect(); - rect.moveCenter(offset); - pt.d->rect = rect; - pt.d->startPos = pt.startPos() + offset; - pt.d->lastPos = pt.lastPos() + offset; - } - } - - touchEvent->setAccepted(eventAccepted); - break; - } - case QEvent::RequestSoftwareInputPanel: - case QEvent::CloseSoftwareInputPanel: -#ifndef QT_NO_IM - if (receiver->isWidgetType()) { - QWidget *w = static_cast<QWidget *>(receiver); - QInputContext *ic = w->inputContext(); - if (ic && ic->filterEvent(e)) { - break; - } - } -#endif - res = d->notify_helper(receiver, e); - break; - -#ifndef QT_NO_GESTURES - case QEvent::NativeGesture: - { - // only propagate the first gesture event (after the GID_BEGIN) - QWidget *w = static_cast<QWidget *>(receiver); - while (w) { - e->ignore(); - res = d->notify_helper(w, e); - if ((res && e->isAccepted()) || w->isWindow()) - break; - w = w->parentWidget(); - } - break; - } - case QEvent::Gesture: - case QEvent::GestureOverride: - { - if (receiver->isWidgetType()) { - QWidget *w = static_cast<QWidget *>(receiver); - QGestureEvent *gestureEvent = static_cast<QGestureEvent *>(e); - QList<QGesture *> allGestures = gestureEvent->gestures(); - - bool eventAccepted = gestureEvent->isAccepted(); - bool wasAccepted = eventAccepted; - while (w) { - // send only gestures the widget expects - QList<QGesture *> gestures; - QWidgetPrivate *wd = w->d_func(); - for (int i = 0; i < allGestures.size();) { - QGesture *g = allGestures.at(i); - Qt::GestureType type = g->gestureType(); - QMap<Qt::GestureType, Qt::GestureFlags>::iterator contextit = - wd->gestureContext.find(type); - bool deliver = contextit != wd->gestureContext.end() && - (g->state() == Qt::GestureStarted || w == receiver || - (contextit.value() & Qt::ReceivePartialGestures)); - if (deliver) { - allGestures.removeAt(i); - gestures.append(g); - } else { - ++i; - } - } - if (!gestures.isEmpty()) { // we have gestures for this w - QGestureEvent ge(gestures); - ge.t = gestureEvent->t; - ge.spont = gestureEvent->spont; - ge.m_accept = wasAccepted; - ge.d_func()->accepted = gestureEvent->d_func()->accepted; - res = d->notify_helper(w, &ge); - gestureEvent->spont = false; - eventAccepted = ge.isAccepted(); - for (int i = 0; i < gestures.size(); ++i) { - QGesture *g = gestures.at(i); - // Ignore res [event return value] because handling of multiple gestures - // packed into a single QEvent depends on not consuming the event - if (eventAccepted || ge.isAccepted(g)) { - // if the gesture was accepted, mark the target widget for it - gestureEvent->d_func()->targetWidgets[g->gestureType()] = w; - gestureEvent->setAccepted(g, true); - } else { - // if the gesture was explicitly ignored by the application, - // put it back so a parent can get it - allGestures.append(g); - } - } - } - if (allGestures.isEmpty()) // everything delivered - break; - if (w->isWindow()) - break; - w = w->parentWidget(); - } - foreach (QGesture *g, allGestures) - gestureEvent->setAccepted(g, false); - gestureEvent->m_accept = false; // to make sure we check individual gestures - } else { - res = d->notify_helper(receiver, e); - } - break; - } -#endif // QT_NO_GESTURES -#ifdef QT_MAC_USE_COCOA - case QEvent::Enter: - if (receiver->isWidgetType()) { - QWidget *w = static_cast<QWidget *>(receiver); - if (w->testAttribute(Qt::WA_AcceptTouchEvents)) - qt_widget_private(w)->registerTouchWindow(true); - } - res = d->notify_helper(receiver, e); - break; - case QEvent::Leave: - if (receiver->isWidgetType()) { - QWidget *w = static_cast<QWidget *>(receiver); - if (w->testAttribute(Qt::WA_AcceptTouchEvents)) - qt_widget_private(w)->registerTouchWindow(false); - } - res = d->notify_helper(receiver, e); - break; -#endif - default: - res = d->notify_helper(receiver, e); - break; - } - - return res; -} - -bool QApplicationPrivate::notify_helper(QObject *receiver, QEvent * e) -{ - // send to all application event filters - if (sendThroughApplicationEventFilters(receiver, e)) - return true; - - if (receiver->isWidgetType()) { - QWidget *widget = static_cast<QWidget *>(receiver); - -#if !defined(Q_WS_WINCE) || (defined(GWES_ICONCURS) && !defined(QT_NO_CURSOR)) - // toggle HasMouse widget state on enter and leave - if ((e->type() == QEvent::Enter || e->type() == QEvent::DragEnter) && - (!QApplication::activePopupWidget() || QApplication::activePopupWidget() == widget->window())) - widget->setAttribute(Qt::WA_UnderMouse, true); - else if (e->type() == QEvent::Leave || e->type() == QEvent::DragLeave) - widget->setAttribute(Qt::WA_UnderMouse, false); -#endif - - if (QLayout *layout=widget->d_func()->layout) { - layout->widgetEvent(e); - } - } - - // send to all receiver event filters - if (sendThroughObjectEventFilters(receiver, e)) - return true; - - // deliver the event - bool consumed = receiver->event(e); - e->spont = false; - return consumed; -} - - -/*! - \class QSessionManager - \brief The QSessionManager class provides access to the session manager. - - A session manager in a desktop environment (in which Qt GUI applications - live) keeps track of a session, which is a group of running applications, - each of which has a particular state. The state of an application contains - (most notably) the documents the application has open and the position and - size of its windows. - - The session manager is used to save the session, e.g., when the machine is - shut down, and to restore a session, e.g., when the machine is started up. - We recommend that you use QSettings to save an application's settings, - for example, window positions, recently used files, etc. When the - application is restarted by the session manager, you can restore the - settings. - - QSessionManager provides an interface between the application and the - session manager so that the program can work well with the session manager. - In Qt, session management requests for action are handled by the two - virtual functions QApplication::commitData() and QApplication::saveState(). - Both provide a reference to a session manager object as argument, to allow - the application to communicate with the session manager. The session - manager can only be accessed through these functions. - - No user interaction is possible \e unless the application gets explicit - permission from the session manager. You ask for permission by calling - allowsInteraction() or, if it is really urgent, allowsErrorInteraction(). - Qt does not enforce this, but the session manager may. - - You can try to abort the shutdown process by calling cancel(). The default - commitData() function does this if some top-level window rejected its - closeEvent(). - - For sophisticated session managers provided on Unix/X11, QSessionManager - offers further possibilities to fine-tune an application's session - management behavior: setRestartCommand(), setDiscardCommand(), - setRestartHint(), setProperty(), requestPhase2(). See the respective - function descriptions for further details. - - \sa QApplication, {Session Management} -*/ - -/*! \enum QSessionManager::RestartHint - - This enum type defines the circumstances under which this application wants - to be restarted by the session manager. The current values are: - - \value RestartIfRunning If the application is still running when the - session is shut down, it wants to be restarted - at the start of the next session. - - \value RestartAnyway The application wants to be started at the - start of the next session, no matter what. - (This is useful for utilities that run just - after startup and then quit.) - - \value RestartImmediately The application wants to be started immediately - whenever it is not running. - - \value RestartNever The application does not want to be restarted - automatically. - - The default hint is \c RestartIfRunning. -*/ - - -/*! - \fn QString QSessionManager::sessionId() const - - Returns the identifier of the current session. - - If the application has been restored from an earlier session, this - identifier is the same as it was in the earlier session. - - \sa sessionKey(), QApplication::sessionId() -*/ - -/*! - \fn QString QSessionManager::sessionKey() const - - Returns the session key in the current session. - - If the application has been restored from an earlier session, this key is - the same as it was when the previous session ended. - - The session key changes with every call of commitData() or saveState(). - - \sa sessionId(), QApplication::sessionKey() -*/ - -/*! - \fn void* QSessionManager::handle() const - - \internal -*/ - -/*! - \fn bool QSessionManager::allowsInteraction() - - Asks the session manager for permission to interact with the user. Returns - true if interaction is permitted; otherwise returns false. - - The rationale behind this mechanism is to make it possible to synchronize - user interaction during a shutdown. Advanced session managers may ask all - applications simultaneously to commit their data, resulting in a much - faster shutdown. - - When the interaction is completed we strongly recommend releasing the user - interaction semaphore with a call to release(). This way, other - applications may get the chance to interact with the user while your - application is still busy saving data. (The semaphore is implicitly - released when the application exits.) - - If the user decides to cancel the shutdown process during the interaction - phase, you must tell the session manager that this has happened by calling - cancel(). - - Here's an example of how an application's QApplication::commitData() might - be implemented: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 8 - - If an error occurred within the application while saving its data, you may - want to try allowsErrorInteraction() instead. - - \sa QApplication::commitData(), release(), cancel() -*/ - - -/*! - \fn bool QSessionManager::allowsErrorInteraction() - - Returns true if error interaction is permitted; otherwise returns false. - - This is similar to allowsInteraction(), but also enables the application to - tell the user about any errors that occur. Session managers may give error - interaction requests higher priority, which means that it is more likely - that an error interaction is permitted. However, you are still not - guaranteed that the session manager will allow interaction. - - \sa allowsInteraction(), release(), cancel() -*/ - -/*! - \fn void QSessionManager::release() - - Releases the session manager's interaction semaphore after an interaction - phase. - - \sa allowsInteraction(), allowsErrorInteraction() -*/ - -/*! - \fn void QSessionManager::cancel() - - Tells the session manager to cancel the shutdown process. Applications - should not call this function without asking the user first. - - \sa allowsInteraction(), allowsErrorInteraction() -*/ - -/*! - \fn void QSessionManager::setRestartHint(RestartHint hint) - - Sets the application's restart hint to \a hint. On application startup, the - hint is set to \c RestartIfRunning. - - \note These flags are only hints, a session manager may or may not respect - them. - - We recommend setting the restart hint in QApplication::saveState() because - most session managers perform a checkpoint shortly after an application's - startup. - - \sa restartHint() -*/ - -/*! - \fn QSessionManager::RestartHint QSessionManager::restartHint() const - - Returns the application's current restart hint. The default is - \c RestartIfRunning. - - \sa setRestartHint() -*/ - -/*! - \fn void QSessionManager::setRestartCommand(const QStringList& command) - - If the session manager is capable of restoring sessions it will execute - \a command in order to restore the application. The command defaults to - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 9 - - The \c -session option is mandatory; otherwise QApplication cannot tell - whether it has been restored or what the current session identifier is. - See QApplication::isSessionRestored() and QApplication::sessionId() for - details. - - If your application is very simple, it may be possible to store the entire - application state in additional command line options. This is usually a - very bad idea because command lines are often limited to a few hundred - bytes. Instead, use QSettings, temporary files, or a database for this - purpose. By marking the data with the unique sessionId(), you will be able - to restore the application in a future session. - - \sa restartCommand(), setDiscardCommand(), setRestartHint() -*/ - -/*! - \fn QStringList QSessionManager::restartCommand() const - - Returns the currently set restart command. - - To iterate over the list, you can use the \l foreach pseudo-keyword: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 10 - - \sa setRestartCommand(), restartHint() -*/ - -/*! - \fn void QSessionManager::setDiscardCommand(const QStringList& list) - - Sets the discard command to the given \a list. - - \sa discardCommand(), setRestartCommand() -*/ - - -/*! - \fn QStringList QSessionManager::discardCommand() const - - Returns the currently set discard command. - - To iterate over the list, you can use the \l foreach pseudo-keyword: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 11 - - \sa setDiscardCommand(), restartCommand(), setRestartCommand() -*/ - -/*! - \fn void QSessionManager::setManagerProperty(const QString &name, const QString &value) - \overload - - Low-level write access to the application's identification and state - records are kept in the session manager. - - The property called \a name has its value set to the string \a value. -*/ - -/*! - \fn void QSessionManager::setManagerProperty(const QString& name, - const QStringList& value) - - Low-level write access to the application's identification and state record - are kept in the session manager. - - The property called \a name has its value set to the string list \a value. -*/ - -/*! - \fn bool QSessionManager::isPhase2() const - - Returns true if the session manager is currently performing a second - session management phase; otherwise returns false. - - \sa requestPhase2() -*/ - -/*! - \fn void QSessionManager::requestPhase2() - - Requests a second session management phase for the application. The - application may then return immediately from the QApplication::commitData() - or QApplication::saveState() function, and they will be called again once - most or all other applications have finished their session management. - - The two phases are useful for applications such as the X11 window manager - that need to store information about another application's windows and - therefore have to wait until these applications have completed their - respective session management tasks. - - \note If another application has requested a second phase it may get called - before, simultaneously with, or after your application's second phase. - - \sa isPhase2() -*/ - -/***************************************************************************** - Stubbed session management support - *****************************************************************************/ -#ifndef QT_NO_SESSIONMANAGER -#if defined(Q_WS_WIN) || defined(Q_WS_MAC) || defined(Q_WS_QWS) - -#if defined(Q_OS_WINCE) -HRESULT qt_CoCreateGuid(GUID* guid) -{ - // We will use the following information to create the GUID - // 1. absolute path to application - wchar_t tempFilename[MAX_PATH]; - if (!GetModuleFileName(0, tempFilename, MAX_PATH)) - return S_FALSE; - unsigned int hash = qHash(QString::fromWCharArray(tempFilename)); - guid->Data1 = hash; - // 2. creation time of file - QFileInfo info(QString::fromWCharArray(tempFilename)); - guid->Data2 = qHash(info.created().toTime_t()); - // 3. current system time - guid->Data3 = qHash(QDateTime::currentDateTime().toTime_t()); - return S_OK; -} -#if !defined(OLE32_MCOMGUID) || defined(QT_WINCE_FORCE_CREATE_GUID) -#define CoCreateGuid qt_CoCreateGuid -#endif - -#endif - -class QSessionManagerPrivate : public QObjectPrivate -{ -public: - QStringList restartCommand; - QStringList discardCommand; - QString sessionId; - QString sessionKey; - QSessionManager::RestartHint restartHint; -}; - -QSessionManager* qt_session_manager_self = 0; -QSessionManager::QSessionManager(QApplication * app, QString &id, QString &key) - : QObject(*new QSessionManagerPrivate, app) -{ - Q_D(QSessionManager); - setObjectName(QLatin1String("qt_sessionmanager")); - qt_session_manager_self = this; -#if defined(Q_WS_WIN) - wchar_t guidstr[40]; - GUID guid; - CoCreateGuid(&guid); - StringFromGUID2(guid, guidstr, 40); - id = QString::fromWCharArray(guidstr); - CoCreateGuid(&guid); - StringFromGUID2(guid, guidstr, 40); - key = QString::fromWCharArray(guidstr); -#endif - d->sessionId = id; - d->sessionKey = key; - d->restartHint = RestartIfRunning; -} - -QSessionManager::~QSessionManager() -{ - qt_session_manager_self = 0; -} - -QString QSessionManager::sessionId() const -{ - Q_D(const QSessionManager); - return d->sessionId; -} - -QString QSessionManager::sessionKey() const -{ - Q_D(const QSessionManager); - return d->sessionKey; -} - - -#if defined(Q_WS_X11) || defined(Q_WS_MAC) -void* QSessionManager::handle() const -{ - return 0; -} -#endif - -#if !defined(Q_WS_WIN) -bool QSessionManager::allowsInteraction() -{ - return true; -} - -bool QSessionManager::allowsErrorInteraction() -{ - return true; -} -void QSessionManager::release() -{ -} - -void QSessionManager::cancel() -{ -} -#endif - - -void QSessionManager::setRestartHint(QSessionManager::RestartHint hint) -{ - Q_D(QSessionManager); - d->restartHint = hint; -} - -QSessionManager::RestartHint QSessionManager::restartHint() const -{ - Q_D(const QSessionManager); - return d->restartHint; -} - -void QSessionManager::setRestartCommand(const QStringList& command) -{ - Q_D(QSessionManager); - d->restartCommand = command; -} - -QStringList QSessionManager::restartCommand() const -{ - Q_D(const QSessionManager); - return d->restartCommand; -} - -void QSessionManager::setDiscardCommand(const QStringList& command) -{ - Q_D(QSessionManager); - d->discardCommand = command; -} - -QStringList QSessionManager::discardCommand() const -{ - Q_D(const QSessionManager); - return d->discardCommand; -} - -void QSessionManager::setManagerProperty(const QString&, const QString&) -{ -} - -void QSessionManager::setManagerProperty(const QString&, const QStringList&) -{ -} - -bool QSessionManager::isPhase2() const -{ - return false; -} - -void QSessionManager::requestPhase2() -{ -} - -#endif -#endif // QT_NO_SESSIONMANAGER - -/*! - \typedef QApplication::ColorMode - \compat - - Use ColorSpec instead. -*/ - -/*! - \fn Qt::MacintoshVersion QApplication::macVersion() - - Use QSysInfo::MacintoshVersion instead. -*/ - -/*! - \fn QApplication::ColorMode QApplication::colorMode() - - Use colorSpec() instead, and use ColorSpec as the enum type. -*/ - -/*! - \fn void QApplication::setColorMode(ColorMode mode) - - Use setColorSpec() instead, and pass a ColorSpec value instead. -*/ - -/*! - \fn bool QApplication::hasGlobalMouseTracking() - - This feature does not exist anymore. This function always returns true - in Qt 4. -*/ - -/*! - \fn void QApplication::setGlobalMouseTracking(bool dummy) - - This function does nothing in Qt 4. The \a dummy parameter is ignored. -*/ - -/*! - \fn void QApplication::flushX() - - Use flush() instead. -*/ - -/*! - \fn void QApplication::setWinStyleHighlightColor(const QColor &c) - - Use the palette instead. - - \oldcode - app.setWinStyleHighlightColor(color); - \newcode - QPalette palette(QApplication::palette()); - palette.setColor(QPalette::Highlight, color); - QApplication::setPalette(palette); - \endcode -*/ - -/*! - \fn void QApplication::setPalette(const QPalette &pal, bool b, const char* className = 0) - - Use the two-argument overload instead. -*/ - -/*! - \fn void QApplication::setFont(const QFont &font, bool b, const char* className = 0) - - Use the two-argument overload instead. -*/ - -/*! - \fn const QColor &QApplication::winStyleHighlightColor() - - Use QApplication::palette().color(QPalette::Active, QPalette::Highlight) instead. -*/ - -/*! - \fn QWidget *QApplication::widgetAt(int x, int y, bool child) - - Use the two-argument widgetAt() overload to get the child widget. To get - the top-level widget do this: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 12 -*/ - -/*! - \fn QWidget *QApplication::widgetAt(const QPoint &point, bool child) - - Use the single-argument widgetAt() overload to get the child widget. To get - the top-level widget do this: - - \snippet doc/src/snippets/code/src_gui_kernel_qapplication.cpp 13 -*/ - -#ifdef QT3_SUPPORT -QWidget *QApplication::mainWidget() -{ - return QApplicationPrivate::main_widget; -} -#endif -bool QApplicationPrivate::inPopupMode() const -{ - return QApplicationPrivate::popupWidgets != 0; -} - -/*! - \property QApplication::quitOnLastWindowClosed - - \brief whether the application implicitly quits when the last window is - closed. - - The default is true. - - If this property is true, the applications quits when the last visible - primary window (i.e. window with no parent) with the Qt::WA_QuitOnClose - attribute set is closed. By default this attribute is set for all widgets - except for sub-windows. Refer to \l{Qt::WindowType} for a detailed list of - Qt::Window objects. - - \sa quit(), QWidget::close() - */ - -void QApplication::setQuitOnLastWindowClosed(bool quit) -{ - QApplicationPrivate::quitOnLastWindowClosed = quit; -} - -bool QApplication::quitOnLastWindowClosed() -{ - return QApplicationPrivate::quitOnLastWindowClosed; -} - -void QApplicationPrivate::emitLastWindowClosed() -{ - if (qApp && qApp->d_func()->in_exec) { - if (QApplicationPrivate::quitOnLastWindowClosed) { - // get ready to quit, this event might be removed if the - // event loop is re-entered, however - QApplication::postEvent(qApp, new QEvent(QEvent::Quit)); - } - emit qApp->lastWindowClosed(); - } -} - -/*! \variable QApplication::NormalColors - \compat - - Use \l NormalColor instead. -*/ - -/*! \variable QApplication::CustomColors - \compat - - Use \l CustomColor instead. -*/ - -#ifdef QT_KEYPAD_NAVIGATION -/*! - Sets the kind of focus navigation Qt should use to \a mode. - - This feature is available in Qt for Embedded Linux, Symbian and Windows CE - only. - - \note On Windows CE this feature is disabled by default for touch device - mkspecs. To enable keypad navigation, build Qt with - QT_KEYPAD_NAVIGATION defined. - - \note On Symbian, setting the mode to Qt::NavigationModeCursorAuto will enable a - virtual mouse cursor on non touchscreen devices, which is controlled - by the cursor keys if there is no analog pointer device. - On other platforms and on touchscreen devices, it has the same - meaning as Qt::NavigationModeNone. - - \since 4.6 - - \sa keypadNavigationEnabled() -*/ -void QApplication::setNavigationMode(Qt::NavigationMode mode) -{ -#ifdef Q_OS_SYMBIAN - QApplicationPrivate::setNavigationMode(mode); -#else - QApplicationPrivate::navigationMode = mode; -#endif -} - -/*! - Returns what kind of focus navigation Qt is using. - - This feature is available in Qt for Embedded Linux, Symbian and Windows CE - only. - - \note On Windows CE this feature is disabled by default for touch device - mkspecs. To enable keypad navigation, build Qt with - QT_KEYPAD_NAVIGATION defined. - - \note On Symbian, the default mode is Qt::NavigationModeNone for touch - devices, and Qt::NavigationModeKeypadDirectional. - - \since 4.6 - - \sa keypadNavigationEnabled() -*/ -Qt::NavigationMode QApplication::navigationMode() -{ - return QApplicationPrivate::navigationMode; -} - -/*! - Sets whether Qt should use focus navigation suitable for use with a - minimal keypad. - - This feature is available in Qt for Embedded Linux, Symbian and Windows CE - only. - - \note On Windows CE this feature is disabled by default for touch device - mkspecs. To enable keypad navigation, build Qt with - QT_KEYPAD_NAVIGATION defined. - - \deprecated - - \sa setNavigationMode() -*/ -void QApplication::setKeypadNavigationEnabled(bool enable) -{ - if (enable) { -#ifdef Q_OS_SYMBIAN - QApplication::setNavigationMode(Qt::NavigationModeKeypadDirectional); -#else - QApplication::setNavigationMode(Qt::NavigationModeKeypadTabOrder); -#endif - } - else { - QApplication::setNavigationMode(Qt::NavigationModeNone); - } -} - -/*! - Returns true if Qt is set to use keypad navigation; otherwise returns - false. The default value is true on Symbian, but false on other platforms. - - This feature is available in Qt for Embedded Linux, Symbian and Windows CE - only. - - \note On Windows CE this feature is disabled by default for touch device - mkspecs. To enable keypad navigation, build Qt with - QT_KEYPAD_NAVIGATION defined. - - \deprecated - - \sa navigationMode() -*/ -bool QApplication::keypadNavigationEnabled() -{ - return QApplicationPrivate::navigationMode == Qt::NavigationModeKeypadTabOrder || - QApplicationPrivate::navigationMode == Qt::NavigationModeKeypadDirectional; -} -#endif - -/*! - \fn void QApplication::alert(QWidget *widget, int msec) - \since 4.3 - - Causes an alert to be shown for \a widget if the window is not the active - window. The alert is shown for \a msec miliseconds. If \a msec is zero (the - default), then the alert is shown indefinitely until the window becomes - active again. - - Currently this function does nothing on Qt for Embedded Linux. - - On Mac OS X, this works more at the application level and will cause the - application icon to bounce in the dock. - - On Windows, this causes the window's taskbar entry to flash for a time. If - \a msec is zero, the flashing will stop and the taskbar entry will turn a - different color (currently orange). - - On X11, this will cause the window to be marked as "demands attention", the - window must not be hidden (i.e. not have hide() called on it, but be - visible in some sort of way) in order for this to work. -*/ - -/*! - \property QApplication::cursorFlashTime - \brief the text cursor's flash (blink) time in milliseconds - - The flash time is the time required to display, invert and restore the - caret display. Usually the text cursor is displayed for half the cursor - flash time, then hidden for the same amount of time, but this may vary. - - The default value on X11 is 1000 milliseconds. On Windows, the - \gui{Control Panel} value is used and setting this property sets the cursor - flash time for all applications. - - We recommend that widgets do not cache this value as it may change at any - time if the user changes the global desktop settings. -*/ - -/*! - \property QApplication::doubleClickInterval - \brief the time limit in milliseconds that distinguishes a double click - from two consecutive mouse clicks - - The default value on X11 is 400 milliseconds. On Windows and Mac OS, the - operating system's value is used. However, on Windows and Symbian OS, - calling this function sets the double click interval for all applications. -*/ - -/*! - \property QApplication::keyboardInputInterval - \brief the time limit in milliseconds that distinguishes a key press - from two consecutive key presses - \since 4.2 - - The default value on X11 is 400 milliseconds. On Windows and Mac OS, the - operating system's value is used. -*/ - -/*! - \property QApplication::wheelScrollLines - \brief the number of lines to scroll a widget, when the - mouse wheel is rotated. - - If the value exceeds the widget's number of visible lines, the widget - should interpret the scroll operation as a single \e{page up} or - \e{page down}. If the widget is an \l{QAbstractItemView}{item view class}, - then the result of scrolling one \e line depends on the setting of the - widget's \l{QAbstractItemView::verticalScrollMode()}{scroll mode}. Scroll - one \e line can mean \l{QAbstractItemView::ScrollPerItem}{scroll one item} - or \l{QAbstractItemView::ScrollPerPixel}{scroll one pixel}. - - By default, this property has a value of 3. -*/ - -/*! - \fn void QApplication::setEffectEnabled(Qt::UIEffect effect, bool enable) - - Enables the UI effect \a effect if \a enable is true, otherwise the effect - will not be used. - - \note All effects are disabled on screens running at less than 16-bit color - depth. - - \sa isEffectEnabled(), Qt::UIEffect, setDesktopSettingsAware() -*/ - -/*! - \fn bool QApplication::isEffectEnabled(Qt::UIEffect effect) - - Returns true if \a effect is enabled; otherwise returns false. - - By default, Qt will try to use the desktop settings. To prevent this, call - setDesktopSettingsAware(false). - - \note All effects are disabled on screens running at less than 16-bit color - depth. - - \sa setEffectEnabled(), Qt::UIEffect -*/ - -/*! - \fn QWidget *QApplication::mainWidget() - - Returns the main application widget, or 0 if there is no main widget. -*/ - -/*! - \fn void QApplication::setMainWidget(QWidget *mainWidget) - - Sets the application's main widget to \a mainWidget. - - In most respects the main widget is like any other widget, except that if - it is closed, the application exits. QApplication does \e not take - ownership of the \a mainWidget, so if you create your main widget on the - heap you must delete it yourself. - - You need not have a main widget; connecting lastWindowClosed() to quit() - is an alternative. - - On X11, this function also resizes and moves the main widget according - to the \e -geometry command-line option, so you should set the default - geometry (using \l QWidget::setGeometry()) before calling setMainWidget(). - - \sa mainWidget(), exec(), quit() -*/ - -/*! - \fn void QApplication::beep() - - Sounds the bell, using the default volume and sound. The function is \e not - available in Qt for Embedded Linux. -*/ - -/*! - \fn void QApplication::setOverrideCursor(const QCursor &cursor) - - Sets the application override cursor to \a cursor. - - Application override cursors are intended for showing the user that the - application is in a special state, for example during an operation that - might take some time. - - This cursor will be displayed in all the application's widgets until - restoreOverrideCursor() or another setOverrideCursor() is called. - - Application cursors are stored on an internal stack. setOverrideCursor() - pushes the cursor onto the stack, and restoreOverrideCursor() pops the - active cursor off the stack. changeOverrideCursor() changes the curently - active application override cursor. - - Every setOverrideCursor() must eventually be followed by a corresponding - restoreOverrideCursor(), otherwise the stack will never be emptied. - - Example: - \snippet doc/src/snippets/code/src_gui_kernel_qapplication_x11.cpp 0 - - \sa overrideCursor(), restoreOverrideCursor(), changeOverrideCursor(), - QWidget::setCursor() -*/ - -/*! - \fn void QApplication::restoreOverrideCursor() - - Undoes the last setOverrideCursor(). - - If setOverrideCursor() has been called twice, calling - restoreOverrideCursor() will activate the first cursor set. Calling this - function a second time restores the original widgets' cursors. - - \sa setOverrideCursor(), overrideCursor() -*/ - -/*! - \macro qApp - \relates QApplication - - A global pointer referring to the unique application object. It is - equivalent to the pointer returned by the QCoreApplication::instance() - function except that, in GUI applications, it is a pointer to a - QApplication instance. - - Only one application object can be created. - - \sa QCoreApplication::instance() -*/ - -#ifndef QT_NO_IM -// ************************************************************************ -// Input Method support -// ************************************************************************ - -/*! - This function replaces the QInputContext instance used by the application - with \a inputContext. - - Qt takes ownership of the given \a inputContext. - - \sa inputContext() -*/ -void QApplication::setInputContext(QInputContext *inputContext) -{ - if (inputContext == QApplicationPrivate::inputContext) - return; - if (!inputContext) { - qWarning("QApplication::setInputContext: called with 0 input context"); - return; - } - delete QApplicationPrivate::inputContext; - QApplicationPrivate::inputContext = inputContext; - QApplicationPrivate::inputContext->setParent(this); -} - -/*! - Returns the QInputContext instance used by the application. - - \sa setInputContext() -*/ -QInputContext *QApplication::inputContext() const -{ - Q_D(const QApplication); - Q_UNUSED(d);// only static members being used. - if (QApplicationPrivate::is_app_closing) - return d->inputContext; -#ifdef Q_WS_X11 - if (!X11) - return 0; - if (!d->inputContext) { - QApplication *that = const_cast<QApplication *>(this); - QInputContext *qic = QInputContextFactory::create(X11->default_im, that); - // fallback to default X Input Method. - if (!qic) - qic = QInputContextFactory::create(QLatin1String("xim"), that); - that->d_func()->inputContext = qic; - } -#elif defined(Q_OS_SYMBIAN) - if (!d->inputContext) { - QApplication *that = const_cast<QApplication *>(this); - const QStringList keys = QInputContextFactory::keys(); - // Try hbim and coefep first, then try others. - if (keys.contains(QLatin1String("hbim"))) { - that->d_func()->inputContext = QInputContextFactory::create(QLatin1String("hbim"), that); - } else if (keys.contains(QLatin1String("coefep"))) { - that->d_func()->inputContext = QInputContextFactory::create(QLatin1String("coefep"), that); - } else { - for (int c = 0; c < keys.size() && !d->inputContext; ++c) { - that->d_func()->inputContext = QInputContextFactory::create(keys[c], that); - } - } - } -#endif - return d->inputContext; -} -#endif // QT_NO_IM - -//Returns the current platform used by keyBindings -uint QApplicationPrivate::currentPlatform(){ - uint platform = KB_Win; -#ifdef Q_WS_MAC - platform = KB_Mac; -#elif defined Q_WS_X11 - platform = KB_X11; - if (X11->desktopEnvironment == DE_KDE) - platform |= KB_KDE; - if (X11->desktopEnvironment == DE_GNOME) - platform |= KB_Gnome; - if (X11->desktopEnvironment == DE_CDE) - platform |= KB_CDE; -#elif defined(Q_OS_SYMBIAN) - platform = KB_S60; -#endif - return platform; -} - -bool qt_sendSpontaneousEvent(QObject *receiver, QEvent *event) -{ - return QCoreApplication::sendSpontaneousEvent(receiver, event); -} - - -/*! - \since 4.2 - - Returns the current keyboard input locale. -*/ -QLocale QApplication::keyboardInputLocale() -{ - if (!QApplicationPrivate::checkInstance("keyboardInputLocale")) - return QLocale::c(); - return qt_keymapper_private()->keyboardInputLocale; -} - -/*! - \since 4.2 - - Returns the current keyboard input direction. -*/ -Qt::LayoutDirection QApplication::keyboardInputDirection() -{ - if (!QApplicationPrivate::checkInstance("keyboardInputDirection")) - return Qt::LeftToRight; - return qt_keymapper_private()->keyboardInputDirection; -} - -void QApplicationPrivate::giveFocusAccordingToFocusPolicy(QWidget *widget, - Qt::FocusPolicy focusPolicy, - Qt::FocusReason focusReason) -{ - QWidget *focusWidget = widget; - while (focusWidget) { - if (focusWidget->isEnabled() - && QApplicationPrivate::shouldSetFocus(focusWidget, focusPolicy)) { - focusWidget->setFocus(focusReason); - break; - } - if (focusWidget->isWindow()) - break; - focusWidget = focusWidget->parentWidget(); - } -} - -bool QApplicationPrivate::shouldSetFocus(QWidget *w, Qt::FocusPolicy policy) -{ - QWidget *f = w; - while (f->d_func()->extra && f->d_func()->extra->focus_proxy) - f = f->d_func()->extra->focus_proxy; - - if ((w->focusPolicy() & policy) != policy) - return false; - if (w != f && (f->focusPolicy() & policy) != policy) - return false; - return true; -} - -/*! \fn QDecoration &QApplication::qwsDecoration() - Return the QWSDecoration used for decorating windows. - - \warning This method is non-portable. It is only available in - Qt for Embedded Linux. - - \sa QDecoration -*/ - -/*! - \fn void QApplication::qwsSetDecoration(QDecoration *decoration) - - Sets the QDecoration derived class to use for decorating the - windows used by Qt for Embedded Linux to the \a decoration - specified. - - This method is non-portable. It is only available in Qt for Embedded Linux. - - \sa QDecoration -*/ - -/*! \fn QDecoration* QApplication::qwsSetDecoration(const QString &decoration) - \overload - - Requests a QDecoration object for \a decoration from the - QDecorationFactory. - - The string must be one of the QDecorationFactory::keys(). Keys are case - insensitive. - - A later call to the QApplication constructor will override the requested - style when a "-style" option is passed in as a commandline parameter. - - Returns 0 if an unknown \a decoration is passed, otherwise the QStyle object - returned is set as the application's GUI style. -*/ - -/*! - \fn bool QApplication::qwsEventFilter(QWSEvent *event) - - This virtual function is only implemented under Qt for Embedded Linux. - - If you create an application that inherits QApplication and - reimplement this function, you get direct access to all QWS (Q - Window System) events that the are received from the QWS master - process. The events are passed in the \a event parameter. - - Return true if you want to stop the event from being processed. - Return false for normal event dispatching. The default - implementation returns false. -*/ - -/*! \fn void QApplication::qwsSetCustomColors(QRgb *colorTable, int start, int numColors) - Set Qt for Embedded Linux custom color table. - - Qt for Embedded Linux on 8-bpp displays allocates a standard 216 color cube. - The remaining 40 colors may be used by setting a custom color - table in the QWS master process before any clients connect. - - \a colorTable is an array of up to 40 custom colors. \a start is - the starting index (0-39) and \a numColors is the number of colors - to be set (1-40). - - This method is non-portable. It is available \e only in - Qt for Embedded Linux. - - \note The custom colors will not be used by the default screen - driver. To make use of the new colors, implement a custom screen - driver, or use QDirectPainter. -*/ - -/*! \fn int QApplication::qwsProcessEvent(QWSEvent* event) - \internal -*/ - -/*! \fn int QApplication::x11ClientMessage(QWidget* w, XEvent* event, bool passive_only) - \internal -*/ - -/*! \fn int QApplication::x11ProcessEvent(XEvent* event) - This function does the core processing of individual X - \a{event}s, normally by dispatching Qt events to the right - destination. - - It returns 1 if the event was consumed by special handling, 0 if - the \a event was consumed by normal handling, and -1 if the \a - event was for an unrecognized widget. - - \sa x11EventFilter() -*/ - -/*! - \fn bool QApplication::x11EventFilter(XEvent *event) - - \warning This virtual function is only implemented under X11. - - If you create an application that inherits QApplication and - reimplement this function, you get direct access to all X events - that the are received from the X server. The events are passed in - the \a event parameter. - - Return true if you want to stop the event from being processed. - Return false for normal event dispatching. The default - implementation returns false. - - It is only the directly addressed messages that are filtered. - You must install an event filter directly on the event - dispatcher, which is returned by - QAbstractEventDispatcher::instance(), to handle system wide - messages. - - \sa x11ProcessEvent() -*/ - -/*! \fn void QApplication::winFocus(QWidget *widget, bool gotFocus) - \internal - \since 4.1 - - If \a gotFocus is true, \a widget will become the active window. - Otherwise the active window is reset to 0. -*/ - -/*! \fn void QApplication::winMouseButtonUp() - \internal - */ - -/*! \fn void QApplication::syncX() - Synchronizes with the X server in the X11 implementation. - This normally takes some time. Does nothing on other platforms. -*/ - -void QApplicationPrivate::updateTouchPointsForWidget(QWidget *widget, QTouchEvent *touchEvent) -{ - for (int i = 0; i < touchEvent->touchPoints().count(); ++i) { - QTouchEvent::TouchPoint &touchPoint = touchEvent->_touchPoints[i]; - - // preserve the sub-pixel resolution - QRectF rect = touchPoint.screenRect(); - const QPointF screenPos = rect.center(); - const QPointF delta = screenPos - screenPos.toPoint(); - - rect.moveCenter(widget->mapFromGlobal(screenPos.toPoint()) + delta); - touchPoint.d->rect = rect; - if (touchPoint.state() == Qt::TouchPointPressed) { - touchPoint.d->startPos = widget->mapFromGlobal(touchPoint.startScreenPos().toPoint()) + delta; - touchPoint.d->lastPos = widget->mapFromGlobal(touchPoint.lastScreenPos().toPoint()) + delta; - } - } -} - -void QApplicationPrivate::initializeMultitouch() -{ - widgetForTouchPointId.clear(); - appCurrentTouchPoints.clear(); - - initializeMultitouch_sys(); -} - -void QApplicationPrivate::cleanupMultitouch() -{ - cleanupMultitouch_sys(); - - widgetForTouchPointId.clear(); - appCurrentTouchPoints.clear(); -} - -int QApplicationPrivate::findClosestTouchPointId(const QPointF &screenPos) -{ - int closestTouchPointId = -1; - qreal closestDistance = qreal(0.); - foreach (const QTouchEvent::TouchPoint &touchPoint, appCurrentTouchPoints) { - qreal distance = QLineF(screenPos, touchPoint.screenPos()).length(); - if (closestTouchPointId == -1 || distance < closestDistance) { - closestTouchPointId = touchPoint.id(); - closestDistance = distance; - } - } - return closestTouchPointId; -} - -void QApplicationPrivate::translateRawTouchEvent(QWidget *window, - QTouchEvent::DeviceType deviceType, - const QList<QTouchEvent::TouchPoint> &touchPoints) -{ - QApplicationPrivate *d = self; - typedef QPair<Qt::TouchPointStates, QList<QTouchEvent::TouchPoint> > StatesAndTouchPoints; - QHash<QWidget *, StatesAndTouchPoints> widgetsNeedingEvents; - - for (int i = 0; i < touchPoints.count(); ++i) { - QTouchEvent::TouchPoint touchPoint = touchPoints.at(i); - // explicitly detach from the original touch point that we got, so even - // if the touchpoint structs are reused, we will make a copy that we'll - // deliver to the user (which might want to store the struct for later use). - touchPoint.d = touchPoint.d->detach(); - - // update state - QWeakPointer<QWidget> widget; - switch (touchPoint.state()) { - case Qt::TouchPointPressed: - { - if (deviceType == QTouchEvent::TouchPad) { - // on touch-pads, send all touch points to the same widget - widget = d->widgetForTouchPointId.isEmpty() - ? QWeakPointer<QWidget>() - : d->widgetForTouchPointId.constBegin().value(); - } - - if (!widget) { - // determine which widget this event will go to - if (!window) - window = QApplication::topLevelAt(touchPoint.screenPos().toPoint()); - if (!window) - continue; - widget = window->childAt(window->mapFromGlobal(touchPoint.screenPos().toPoint())); - if (!widget) - widget = window; - } - - if (deviceType == QTouchEvent::TouchScreen) { - int closestTouchPointId = d->findClosestTouchPointId(touchPoint.screenPos()); - QWidget *closestWidget = d->widgetForTouchPointId.value(closestTouchPointId).data(); - if (closestWidget - && (widget.data()->isAncestorOf(closestWidget) || closestWidget->isAncestorOf(widget.data()))) { - widget = closestWidget; - } - } - - d->widgetForTouchPointId[touchPoint.id()] = widget; - touchPoint.d->startScreenPos = touchPoint.screenPos(); - touchPoint.d->lastScreenPos = touchPoint.screenPos(); - touchPoint.d->startNormalizedPos = touchPoint.normalizedPos(); - touchPoint.d->lastNormalizedPos = touchPoint.normalizedPos(); - if (touchPoint.pressure() < qreal(0.)) - touchPoint.d->pressure = qreal(1.); - - d->appCurrentTouchPoints.insert(touchPoint.id(), touchPoint); - break; - } - case Qt::TouchPointReleased: - { - widget = d->widgetForTouchPointId.take(touchPoint.id()); - if (!widget) - continue; - - QTouchEvent::TouchPoint previousTouchPoint = d->appCurrentTouchPoints.take(touchPoint.id()); - touchPoint.d->startScreenPos = previousTouchPoint.startScreenPos(); - touchPoint.d->lastScreenPos = previousTouchPoint.screenPos(); - touchPoint.d->startPos = previousTouchPoint.startPos(); - touchPoint.d->lastPos = previousTouchPoint.pos(); - touchPoint.d->startNormalizedPos = previousTouchPoint.startNormalizedPos(); - touchPoint.d->lastNormalizedPos = previousTouchPoint.normalizedPos(); - if (touchPoint.pressure() < qreal(0.)) - touchPoint.d->pressure = qreal(0.); - break; - } - default: - widget = d->widgetForTouchPointId.value(touchPoint.id()); - if (!widget) - continue; - - Q_ASSERT(d->appCurrentTouchPoints.contains(touchPoint.id())); - QTouchEvent::TouchPoint previousTouchPoint = d->appCurrentTouchPoints.value(touchPoint.id()); - touchPoint.d->startScreenPos = previousTouchPoint.startScreenPos(); - touchPoint.d->lastScreenPos = previousTouchPoint.screenPos(); - touchPoint.d->startPos = previousTouchPoint.startPos(); - touchPoint.d->lastPos = previousTouchPoint.pos(); - touchPoint.d->startNormalizedPos = previousTouchPoint.startNormalizedPos(); - touchPoint.d->lastNormalizedPos = previousTouchPoint.normalizedPos(); - if (touchPoint.pressure() < qreal(0.)) - touchPoint.d->pressure = qreal(1.); - d->appCurrentTouchPoints[touchPoint.id()] = touchPoint; - break; - } - Q_ASSERT(widget.data() != 0); - - // make the *scene* functions return the same as the *screen* functions - touchPoint.d->sceneRect = touchPoint.screenRect(); - touchPoint.d->startScenePos = touchPoint.startScreenPos(); - touchPoint.d->lastScenePos = touchPoint.lastScreenPos(); - - StatesAndTouchPoints &maskAndPoints = widgetsNeedingEvents[widget.data()]; - maskAndPoints.first |= touchPoint.state(); - if (touchPoint.isPrimary()) - maskAndPoints.first |= Qt::TouchPointPrimary; - maskAndPoints.second.append(touchPoint); - } - - if (widgetsNeedingEvents.isEmpty()) - return; - - QHash<QWidget *, StatesAndTouchPoints>::ConstIterator it = widgetsNeedingEvents.constBegin(); - const QHash<QWidget *, StatesAndTouchPoints>::ConstIterator end = widgetsNeedingEvents.constEnd(); - for (; it != end; ++it) { - QWidget *widget = it.key(); - if (!QApplicationPrivate::tryModalHelper(widget, 0)) - continue; - - QEvent::Type eventType; - switch (it.value().first & Qt::TouchPointStateMask) { - case Qt::TouchPointPressed: - eventType = QEvent::TouchBegin; - break; - case Qt::TouchPointReleased: - eventType = QEvent::TouchEnd; - break; - case Qt::TouchPointStationary: - // don't send the event if nothing changed - continue; - default: - eventType = QEvent::TouchUpdate; - break; - } - - QTouchEvent touchEvent(eventType, - deviceType, - QApplication::keyboardModifiers(), - it.value().first, - it.value().second); - updateTouchPointsForWidget(widget, &touchEvent); - - switch (touchEvent.type()) { - case QEvent::TouchBegin: - { - // if the TouchBegin handler recurses, we assume that means the event - // has been implicitly accepted and continue to send touch events - widget->setAttribute(Qt::WA_WState_AcceptedTouchBeginEvent); - (void ) QApplication::sendSpontaneousEvent(widget, &touchEvent); - break; - } - default: - if (widget->testAttribute(Qt::WA_WState_AcceptedTouchBeginEvent)) { - if (touchEvent.type() == QEvent::TouchEnd) - widget->setAttribute(Qt::WA_WState_AcceptedTouchBeginEvent, false); - (void) QApplication::sendSpontaneousEvent(widget, &touchEvent); - } - break; - } - } -} - -Q_GUI_EXPORT void qt_translateRawTouchEvent(QWidget *window, - QTouchEvent::DeviceType deviceType, - const QList<QTouchEvent::TouchPoint> &touchPoints) -{ - QApplicationPrivate::translateRawTouchEvent(window, deviceType, touchPoints); -} - -#ifndef QT_NO_GESTURES -QGestureManager* QGestureManager::instance() -{ - QApplicationPrivate *qAppPriv = QApplicationPrivate::instance(); - if (!qAppPriv) - return 0; - if (!qAppPriv->gestureManager) - qAppPriv->gestureManager = new QGestureManager(qApp); - return qAppPriv->gestureManager; -} -#endif // QT_NO_GESTURES - -// These pixmaps approximate the images in the Windows User Interface Guidelines. - -// XPM - -static const char * const move_xpm[] = { -"11 20 3 1", -". c None", -#if defined(Q_WS_WIN) -"a c #000000", -"X c #FFFFFF", // Windows cursor is traditionally white -#else -"a c #FFFFFF", -"X c #000000", // X11 cursor is traditionally black -#endif -"aa.........", -"aXa........", -"aXXa.......", -"aXXXa......", -"aXXXXa.....", -"aXXXXXa....", -"aXXXXXXa...", -"aXXXXXXXa..", -"aXXXXXXXXa.", -"aXXXXXXXXXa", -"aXXXXXXaaaa", -"aXXXaXXa...", -"aXXaaXXa...", -"aXa..aXXa..", -"aa...aXXa..", -"a.....aXXa.", -"......aXXa.", -".......aXXa", -".......aXXa", -"........aa."}; - -#ifdef Q_WS_WIN -/* XPM */ -static const char * const ignore_xpm[] = { -"24 30 3 1", -". c None", -"a c #000000", -"X c #FFFFFF", -"aa......................", -"aXa.....................", -"aXXa....................", -"aXXXa...................", -"aXXXXa..................", -"aXXXXXa.................", -"aXXXXXXa................", -"aXXXXXXXa...............", -"aXXXXXXXXa..............", -"aXXXXXXXXXa.............", -"aXXXXXXaaaa.............", -"aXXXaXXa................", -"aXXaaXXa................", -"aXa..aXXa...............", -"aa...aXXa...............", -"a.....aXXa..............", -"......aXXa.....XXXX.....", -".......aXXa..XXaaaaXX...", -".......aXXa.XaaaaaaaaX..", -"........aa.XaaaXXXXaaaX.", -"...........XaaaaX..XaaX.", -"..........XaaXaaaX..XaaX", -"..........XaaXXaaaX.XaaX", -"..........XaaX.XaaaXXaaX", -"..........XaaX..XaaaXaaX", -"...........XaaX..XaaaaX.", -"...........XaaaXXXXaaaX.", -"............XaaaaaaaaX..", -".............XXaaaaXX...", -"...............XXXX....."}; -#endif - -/* XPM */ -static const char * const copy_xpm[] = { -"24 30 3 1", -". c None", -"a c #000000", -"X c #FFFFFF", -#if defined(Q_WS_WIN) // Windows cursor is traditionally white -"aa......................", -"aXa.....................", -"aXXa....................", -"aXXXa...................", -"aXXXXa..................", -"aXXXXXa.................", -"aXXXXXXa................", -"aXXXXXXXa...............", -"aXXXXXXXXa..............", -"aXXXXXXXXXa.............", -"aXXXXXXaaaa.............", -"aXXXaXXa................", -"aXXaaXXa................", -"aXa..aXXa...............", -"aa...aXXa...............", -"a.....aXXa..............", -"......aXXa..............", -".......aXXa.............", -".......aXXa.............", -"........aa...aaaaaaaaaaa", -#else -"XX......................", -"XaX.....................", -"XaaX....................", -"XaaaX...................", -"XaaaaX..................", -"XaaaaaX.................", -"XaaaaaaX................", -"XaaaaaaaX...............", -"XaaaaaaaaX..............", -"XaaaaaaaaaX.............", -"XaaaaaaXXXX.............", -"XaaaXaaX................", -"XaaXXaaX................", -"XaX..XaaX...............", -"XX...XaaX...............", -"X.....XaaX..............", -"......XaaX..............", -".......XaaX.............", -".......XaaX.............", -"........XX...aaaaaaaaaaa", -#endif -".............aXXXXXXXXXa", -".............aXXXXXXXXXa", -".............aXXXXaXXXXa", -".............aXXXXaXXXXa", -".............aXXaaaaaXXa", -".............aXXXXaXXXXa", -".............aXXXXaXXXXa", -".............aXXXXXXXXXa", -".............aXXXXXXXXXa", -".............aaaaaaaaaaa"}; - -/* XPM */ -static const char * const link_xpm[] = { -"24 30 3 1", -". c None", -"a c #000000", -"X c #FFFFFF", -#if defined(Q_WS_WIN) // Windows cursor is traditionally white -"aa......................", -"aXa.....................", -"aXXa....................", -"aXXXa...................", -"aXXXXa..................", -"aXXXXXa.................", -"aXXXXXXa................", -"aXXXXXXXa...............", -"aXXXXXXXXa..............", -"aXXXXXXXXXa.............", -"aXXXXXXaaaa.............", -"aXXXaXXa................", -"aXXaaXXa................", -"aXa..aXXa...............", -"aa...aXXa...............", -"a.....aXXa..............", -"......aXXa..............", -".......aXXa.............", -".......aXXa.............", -"........aa...aaaaaaaaaaa", -#else -"XX......................", -"XaX.....................", -"XaaX....................", -"XaaaX...................", -"XaaaaX..................", -"XaaaaaX.................", -"XaaaaaaX................", -"XaaaaaaaX...............", -"XaaaaaaaaX..............", -"XaaaaaaaaaX.............", -"XaaaaaaXXXX.............", -"XaaaXaaX................", -"XaaXXaaX................", -"XaX..XaaX...............", -"XX...XaaX...............", -"X.....XaaX..............", -"......XaaX..............", -".......XaaX.............", -".......XaaX.............", -"........XX...aaaaaaaaaaa", -#endif -".............aXXXXXXXXXa", -".............aXXXaaaaXXa", -".............aXXXXaaaXXa", -".............aXXXaaaaXXa", -".............aXXaaaXaXXa", -".............aXXaaXXXXXa", -".............aXXaXXXXXXa", -".............aXXXaXXXXXa", -".............aXXXXXXXXXa", -".............aaaaaaaaaaa"}; - -QPixmap QApplicationPrivate::getPixmapCursor(Qt::CursorShape cshape) -{ -#if defined(Q_WS_X11) || defined(Q_WS_WIN) - if (!move_cursor) { - move_cursor = new QPixmap((const char **)move_xpm); - copy_cursor = new QPixmap((const char **)copy_xpm); - link_cursor = new QPixmap((const char **)link_xpm); -#ifdef Q_WS_WIN - ignore_cursor = new QPixmap((const char **)ignore_xpm); -#endif - } - - switch (cshape) { - case Qt::DragMoveCursor: - return *move_cursor; - case Qt::DragCopyCursor: - return *copy_cursor; - case Qt::DragLinkCursor: - return *link_cursor; -#ifdef Q_WS_WIN - case Qt::ForbiddenCursor: - return *ignore_cursor; -#endif - default: - break; - } -#else - Q_UNUSED(cshape); -#endif - return QPixmap(); -} - -QString QApplicationPrivate::qmljsDebugArgumentsString() -{ - return qmljs_debug_arguments; -} - -QT_END_NAMESPACE - -#include "moc_qapplication.cpp" |