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Diffstat (limited to 'src/gui/kernel/qtooltip.cpp')
| -rw-r--r-- | src/gui/kernel/qtooltip.cpp | 623 |
1 files changed, 0 insertions, 623 deletions
diff --git a/src/gui/kernel/qtooltip.cpp b/src/gui/kernel/qtooltip.cpp deleted file mode 100644 index f880243a7e..0000000000 --- a/src/gui/kernel/qtooltip.cpp +++ /dev/null @@ -1,623 +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. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ -#ifdef Q_WS_MAC -# include <private/qcore_mac_p.h> -#endif - -#include <qapplication.h> -#include <qdesktopwidget.h> -#include <qevent.h> -#include <qhash.h> -#include <qlabel.h> -#include <qpointer.h> -#include <qstyle.h> -#include <qstyleoption.h> -#include <qstylepainter.h> -#include <qtimer.h> -#include <qtooltip.h> -#include <private/qeffects_p.h> -#include <qtextdocument.h> -#include <qdebug.h> -#include <private/qstylesheetstyle_p.h> -#ifndef QT_NO_TOOLTIP - -#ifdef Q_WS_MAC -# include <private/qcore_mac_p.h> -#include <private/qt_cocoa_helpers_mac_p.h> -#endif - -QT_BEGIN_NAMESPACE - -/*! - \class QToolTip - - \brief The QToolTip class provides tool tips (balloon help) for any - widget. - - \ingroup helpsystem - - - The tip is a short piece of text reminding the user of the - widget's function. It is drawn immediately below the given - position in a distinctive black-on-yellow color combination. The - tip can be any \l{QTextEdit}{rich text} formatted string. - - Rich text displayed in a tool tip is implicitly word-wrapped unless - specified differently with \c{<p style='white-space:pre'>}. - - The simplest and most common way to set a widget's tool tip is by - calling its QWidget::setToolTip() function. - - It is also possible to show different tool tips for different - regions of a widget, by using a QHelpEvent of type - QEvent::ToolTip. Intercept the help event in your widget's \l - {QWidget::}{event()} function and call QToolTip::showText() with - the text you want to display. The \l{widgets/tooltips}{Tooltips} - example illustrates this technique. - - If you are calling QToolTip::hideText(), or QToolTip::showText() - with an empty string, as a result of a \l{QEvent::}{ToolTip}-event you - should also call \l{QEvent::}{ignore()} on the event, to signal - that you don't want to start any tooltip specific modes. - - Note that, if you want to show tooltips in an item view, the - model/view architecture provides functionality to set an item's - tool tip; e.g., the QTableWidgetItem::setToolTip() function. - However, if you want to provide custom tool tips in an item view, - you must intercept the help event in the - QAbstractItemView::viewportEvent() function and handle it yourself. - - The default tool tip color and font can be customized with - setPalette() and setFont(). When a tooltip is currently on - display, isVisible() returns true and text() the currently visible - text. - - \note Tool tips use the inactive color group of QPalette, because tool - tips are not active windows. - - \sa QWidget::toolTip, QAction::toolTip, {Tool Tips Example} -*/ - -class QTipLabel : public QLabel -{ - Q_OBJECT -public: - QTipLabel(const QString &text, QWidget *w); - ~QTipLabel(); - static QTipLabel *instance; - - bool eventFilter(QObject *, QEvent *); - - QBasicTimer hideTimer, expireTimer; - - bool fadingOut; - - void reuseTip(const QString &text); - void hideTip(); - void hideTipImmediately(); - void setTipRect(QWidget *w, const QRect &r); - void restartExpireTimer(); - bool tipChanged(const QPoint &pos, const QString &text, QObject *o); - void placeTip(const QPoint &pos, QWidget *w); - - static int getTipScreen(const QPoint &pos, QWidget *w); -protected: - void timerEvent(QTimerEvent *e); - void paintEvent(QPaintEvent *e); - void mouseMoveEvent(QMouseEvent *e); - void resizeEvent(QResizeEvent *e); - -#ifndef QT_NO_STYLE_STYLESHEET -public slots: - /** \internal - Cleanup the _q_stylesheet_parent propery. - */ - void styleSheetParentDestroyed() { - setProperty("_q_stylesheet_parent", QVariant()); - styleSheetParent = 0; - } - -private: - QWidget *styleSheetParent; -#endif - -private: - QWidget *widget; - QRect rect; -}; - -QTipLabel *QTipLabel::instance = 0; - -QTipLabel::QTipLabel(const QString &text, QWidget *w) -#ifndef QT_NO_STYLE_STYLESHEET - : QLabel(w, Qt::ToolTip | Qt::BypassGraphicsProxyWidget), styleSheetParent(0), widget(0) -#else - : QLabel(w, Qt::ToolTip | Qt::BypassGraphicsProxyWidget), widget(0) -#endif -{ - delete instance; - instance = this; - setForegroundRole(QPalette::ToolTipText); - setBackgroundRole(QPalette::ToolTipBase); - setPalette(QToolTip::palette()); - ensurePolished(); - setMargin(1 + style()->pixelMetric(QStyle::PM_ToolTipLabelFrameWidth, 0, this)); - setFrameStyle(QFrame::NoFrame); - setAlignment(Qt::AlignLeft); - setIndent(1); - qApp->installEventFilter(this); - setWindowOpacity(style()->styleHint(QStyle::SH_ToolTipLabel_Opacity, 0, this) / 255.0); - setMouseTracking(true); - fadingOut = false; - reuseTip(text); -} - -void QTipLabel::restartExpireTimer() -{ - int time = 10000 + 40 * qMax(0, text().length()-100); - expireTimer.start(time, this); - hideTimer.stop(); -} - -void QTipLabel::reuseTip(const QString &text) -{ -#ifndef QT_NO_STYLE_STYLESHEET - if (styleSheetParent){ - disconnect(styleSheetParent, SIGNAL(destroyed()), - QTipLabel::instance, SLOT(styleSheetParentDestroyed())); - styleSheetParent = 0; - } -#endif - - setWordWrap(Qt::mightBeRichText(text)); - setText(text); - QFontMetrics fm(font()); - QSize extra(1, 0); - // Make it look good with the default ToolTip font on Mac, which has a small descent. - if (fm.descent() == 2 && fm.ascent() >= 11) - ++extra.rheight(); - resize(sizeHint() + extra); - restartExpireTimer(); -} - -void QTipLabel::paintEvent(QPaintEvent *ev) -{ - QStylePainter p(this); - QStyleOptionFrame opt; - opt.init(this); - p.drawPrimitive(QStyle::PE_PanelTipLabel, opt); - p.end(); - - QLabel::paintEvent(ev); -} - -void QTipLabel::resizeEvent(QResizeEvent *e) -{ - QStyleHintReturnMask frameMask; - QStyleOption option; - option.init(this); - if (style()->styleHint(QStyle::SH_ToolTip_Mask, &option, this, &frameMask)) - setMask(frameMask.region); - - QLabel::resizeEvent(e); -} - -void QTipLabel::mouseMoveEvent(QMouseEvent *e) -{ - if (rect.isNull()) - return; - QPoint pos = e->globalPos(); - if (widget) - pos = widget->mapFromGlobal(pos); - if (!rect.contains(pos)) - hideTip(); - QLabel::mouseMoveEvent(e); -} - -QTipLabel::~QTipLabel() -{ - instance = 0; -} - -void QTipLabel::hideTip() -{ - if (!hideTimer.isActive()) - hideTimer.start(300, this); -} - -void QTipLabel::hideTipImmediately() -{ - close(); // to trigger QEvent::Close which stops the animation - deleteLater(); -} - -void QTipLabel::setTipRect(QWidget *w, const QRect &r) -{ - if (!rect.isNull() && !w) - qWarning("QToolTip::setTipRect: Cannot pass null widget if rect is set"); - else{ - widget = w; - rect = r; - } -} - -void QTipLabel::timerEvent(QTimerEvent *e) -{ - if (e->timerId() == hideTimer.timerId() - || e->timerId() == expireTimer.timerId()){ - hideTimer.stop(); - expireTimer.stop(); -#if defined(Q_WS_MAC) && !defined(QT_NO_EFFECTS) - if (QApplication::isEffectEnabled(Qt::UI_FadeTooltip)){ - // Fade out tip on mac (makes it invisible). - // The tip will not be deleted until a new tip is shown. - - // DRSWAT - Cocoa - macWindowFade(qt_mac_window_for(this)); - QTipLabel::instance->fadingOut = true; // will never be false again. - } - else - hideTipImmediately(); -#else - hideTipImmediately(); -#endif - } -} - -bool QTipLabel::eventFilter(QObject *o, QEvent *e) -{ - switch (e->type()) { -#ifdef Q_WS_MAC - case QEvent::KeyPress: - case QEvent::KeyRelease: { - int key = static_cast<QKeyEvent *>(e)->key(); - Qt::KeyboardModifiers mody = static_cast<QKeyEvent *>(e)->modifiers(); - if (!(mody & Qt::KeyboardModifierMask) - && key != Qt::Key_Shift && key != Qt::Key_Control - && key != Qt::Key_Alt && key != Qt::Key_Meta) - hideTip(); - break; - } -#endif - case QEvent::Leave: - hideTip(); - break; - case QEvent::WindowActivate: - case QEvent::WindowDeactivate: - case QEvent::MouseButtonPress: - case QEvent::MouseButtonRelease: - case QEvent::MouseButtonDblClick: - case QEvent::FocusIn: - case QEvent::FocusOut: - case QEvent::Wheel: - hideTipImmediately(); - break; - - case QEvent::MouseMove: - if (o == widget && !rect.isNull() && !rect.contains(static_cast<QMouseEvent*>(e)->pos())) - hideTip(); - default: - break; - } - return false; -} - -int QTipLabel::getTipScreen(const QPoint &pos, QWidget *w) -{ - if (QApplication::desktop()->isVirtualDesktop()) - return QApplication::desktop()->screenNumber(pos); - else - return QApplication::desktop()->screenNumber(w); -} - -void QTipLabel::placeTip(const QPoint &pos, QWidget *w) -{ -#ifndef QT_NO_STYLE_STYLESHEET - if (testAttribute(Qt::WA_StyleSheet) || (w && qobject_cast<QStyleSheetStyle *>(w->style()))) { - //the stylesheet need to know the real parent - QTipLabel::instance->setProperty("_q_stylesheet_parent", QVariant::fromValue(w)); - //we force the style to be the QStyleSheetStyle, and force to clear the cache as well. - QTipLabel::instance->setStyleSheet(QLatin1String("/* */")); - - // Set up for cleaning up this later... - QTipLabel::instance->styleSheetParent = w; - if (w) { - connect(w, SIGNAL(destroyed()), - QTipLabel::instance, SLOT(styleSheetParentDestroyed())); - } - } -#endif //QT_NO_STYLE_STYLESHEET - - -#ifdef Q_WS_MAC - // When in full screen mode, there is no Dock nor Menu so we can use - // the whole screen for displaying the tooltip. However when not in - // full screen mode we need to save space for the dock, so we use - // availableGeometry instead. - extern bool qt_mac_app_fullscreen; //qapplication_mac.mm - QRect screen; - if(qt_mac_app_fullscreen) - screen = QApplication::desktop()->screenGeometry(getTipScreen(pos, w)); - else - screen = QApplication::desktop()->availableGeometry(getTipScreen(pos, w)); -#else - QRect screen = QApplication::desktop()->screenGeometry(getTipScreen(pos, w)); -#endif - - QPoint p = pos; - p += QPoint(2, -#ifdef Q_WS_WIN - 21 -#else - 16 -#endif - ); - if (p.x() + this->width() > screen.x() + screen.width()) - p.rx() -= 4 + this->width(); - if (p.y() + this->height() > screen.y() + screen.height()) - p.ry() -= 24 + this->height(); - if (p.y() < screen.y()) - p.setY(screen.y()); - if (p.x() + this->width() > screen.x() + screen.width()) - p.setX(screen.x() + screen.width() - this->width()); - if (p.x() < screen.x()) - p.setX(screen.x()); - if (p.y() + this->height() > screen.y() + screen.height()) - p.setY(screen.y() + screen.height() - this->height()); - this->move(p); -} - -bool QTipLabel::tipChanged(const QPoint &pos, const QString &text, QObject *o) -{ - if (QTipLabel::instance->text() != text) - return true; - - if (o != widget) - return true; - - if (!rect.isNull()) - return !rect.contains(pos); - else - return false; -} - -/*! - Shows \a text as a tool tip, with the global position \a pos as - the point of interest. The tool tip will be shown with a platform - specific offset from this point of interest. - - If you specify a non-empty rect the tip will be hidden as soon - as you move your cursor out of this area. - - The \a rect is in the coordinates of the widget you specify with - \a w. If the \a rect is not empty you must specify a widget. - Otherwise this argument can be 0 but it is used to determine the - appropriate screen on multi-head systems. - - If \a text is empty the tool tip is hidden. If the text is the - same as the currently shown tooltip, the tip will \e not move. - You can force moving by first hiding the tip with an empty text, - and then showing the new tip at the new position. -*/ - -void QToolTip::showText(const QPoint &pos, const QString &text, QWidget *w, const QRect &rect) -{ - if (QTipLabel::instance && QTipLabel::instance->isVisible()){ // a tip does already exist - if (text.isEmpty()){ // empty text means hide current tip - QTipLabel::instance->hideTip(); - return; - } - else if (!QTipLabel::instance->fadingOut){ - // If the tip has changed, reuse the one - // that is showing (removes flickering) - QPoint localPos = pos; - if (w) - localPos = w->mapFromGlobal(pos); - if (QTipLabel::instance->tipChanged(localPos, text, w)){ - QTipLabel::instance->reuseTip(text); - QTipLabel::instance->setTipRect(w, rect); - QTipLabel::instance->placeTip(pos, w); - } - return; - } - } - - if (!text.isEmpty()){ // no tip can be reused, create new tip: -#ifndef Q_WS_WIN - new QTipLabel(text, w); // sets QTipLabel::instance to itself -#else - // On windows, we can't use the widget as parent otherwise the window will be - // raised when the tooltip will be shown - new QTipLabel(text, QApplication::desktop()->screen(QTipLabel::getTipScreen(pos, w))); -#endif - QTipLabel::instance->setTipRect(w, rect); - QTipLabel::instance->placeTip(pos, w); - QTipLabel::instance->setObjectName(QLatin1String("qtooltip_label")); - - -#if !defined(QT_NO_EFFECTS) && !defined(Q_WS_MAC) - if (QApplication::isEffectEnabled(Qt::UI_FadeTooltip)) - qFadeEffect(QTipLabel::instance); - else if (QApplication::isEffectEnabled(Qt::UI_AnimateTooltip)) - qScrollEffect(QTipLabel::instance); - else - QTipLabel::instance->show(); -#else - QTipLabel::instance->show(); -#endif - } -} - -/*! - \overload - - This is analogous to calling QToolTip::showText(\a pos, \a text, \a w, QRect()) -*/ - -void QToolTip::showText(const QPoint &pos, const QString &text, QWidget *w) -{ - QToolTip::showText(pos, text, w, QRect()); -} - - -/*! - \fn void QToolTip::hideText() - \since 4.2 - - Hides the tool tip. This is the same as calling showText() with an - empty string. - - \sa showText() -*/ - - -/*! - \since 4.4 - - Returns true if this tooltip is currently shown. - - \sa showText() - */ -bool QToolTip::isVisible() -{ - return (QTipLabel::instance != 0 && QTipLabel::instance->isVisible()); -} - -/*! - \since 4.4 - - Returns the tooltip text, if a tooltip is visible, or an - empty string if a tooltip is not visible. - */ -QString QToolTip::text() -{ - if (QTipLabel::instance) - return QTipLabel::instance->text(); - return QString(); -} - - -Q_GLOBAL_STATIC(QPalette, tooltip_palette) - -/*! - Returns the palette used to render tooltips. - - \note Tool tips use the inactive color group of QPalette, because tool - tips are not active windows. -*/ -QPalette QToolTip::palette() -{ - return *tooltip_palette(); -} - -/*! - \since 4.2 - - Returns the font used to render tooltips. -*/ -QFont QToolTip::font() -{ - return QApplication::font("QTipLabel"); -} - -/*! - \since 4.2 - - Sets the \a palette used to render tooltips. - - \note Tool tips use the inactive color group of QPalette, because tool - tips are not active windows. -*/ -void QToolTip::setPalette(const QPalette &palette) -{ - *tooltip_palette() = palette; - if (QTipLabel::instance) - QTipLabel::instance->setPalette(palette); -} - -/*! - \since 4.2 - - Sets the \a font used to render tooltips. -*/ -void QToolTip::setFont(const QFont &font) -{ - QApplication::setFont(font, "QTipLabel"); -} - - -/*! - \fn void QToolTip::add(QWidget *widget, const QString &text) - - Use QWidget::setToolTip() instead. - - \oldcode - tip->add(widget, text); - \newcode - widget->setToolTip(text); - \endcode -*/ - -/*! - \fn void QToolTip::add(QWidget *widget, const QRect &rect, const QString &text) - - Intercept the QEvent::ToolTip events in your widget's - QWidget::event() function and call QToolTip::showText() with the - text you want to display. The \l{widgets/tooltips}{Tooltips} - example illustrates this technique. -*/ - -/*! - \fn void QToolTip::remove(QWidget *widget) - - Use QWidget::setToolTip() instead. - - \oldcode - tip->remove(widget); - \newcode - widget->setToolTip(""); - \endcode -*/ - -QT_END_NAMESPACE - -#include "qtooltip.moc" -#endif // QT_NO_TOOLTIP |