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Diffstat (limited to 'src/gui/widgets/qsizegrip.cpp')
| -rw-r--r-- | src/gui/widgets/qsizegrip.cpp | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/src/gui/widgets/qsizegrip.cpp b/src/gui/widgets/qsizegrip.cpp deleted file mode 100644 index 630aecfc09..0000000000 --- a/src/gui/widgets/qsizegrip.cpp +++ /dev/null @@ -1,570 +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 "qsizegrip.h" - -#ifndef QT_NO_SIZEGRIP - -#include "qapplication.h" -#include "qevent.h" -#include "qpainter.h" -#include "qstyle.h" -#include "qstyleoption.h" -#include "qlayout.h" -#include "qdebug.h" -#include <QDesktopWidget> - -#if defined(Q_WS_X11) -#include <private/qt_x11_p.h> -#elif defined (Q_WS_WIN) -#include "qt_windows.h" -#endif -#ifdef Q_WS_MAC -#include <private/qt_mac_p.h> -#endif - -#include <private/qwidget_p.h> -#include <QtGui/qabstractscrollarea.h> - -#define SZ_SIZEBOTTOMRIGHT 0xf008 -#define SZ_SIZEBOTTOMLEFT 0xf007 -#define SZ_SIZETOPLEFT 0xf004 -#define SZ_SIZETOPRIGHT 0xf005 - -QT_BEGIN_NAMESPACE - -static QWidget *qt_sizegrip_topLevelWidget(QWidget* w) -{ - while (w && !w->isWindow() && w->windowType() != Qt::SubWindow) - w = w->parentWidget(); - return w; -} - -class QSizeGripPrivate : public QWidgetPrivate -{ - Q_DECLARE_PUBLIC(QSizeGrip) -public: - void init(); - QPoint p; - QRect r; - int d; - int dxMax; - int dyMax; - Qt::Corner m_corner; - bool gotMousePress; - QWidget *tlw; -#ifdef Q_WS_MAC - void updateMacSizer(bool hide) const; -#endif - Qt::Corner corner() const; - inline bool atBottom() const - { - return m_corner == Qt::BottomRightCorner || m_corner == Qt::BottomLeftCorner; - } - - inline bool atLeft() const - { - return m_corner == Qt::BottomLeftCorner || m_corner == Qt::TopLeftCorner; - } - - void updateTopLevelWidget() - { - Q_Q(QSizeGrip); - QWidget *w = qt_sizegrip_topLevelWidget(q); - if (tlw == w) - return; - if (tlw) - tlw->removeEventFilter(q); - tlw = w; - if (tlw) - tlw->installEventFilter(q); - } - - // This slot is invoked by QLayout when the size grip is added to - // a layout or reparented after the tlw is shown. This re-implementation is basically - // the same as QWidgetPrivate::_q_showIfNotHidden except that it checks - // for Qt::WindowFullScreen and Qt::WindowMaximized as well. - void _q_showIfNotHidden() - { - Q_Q(QSizeGrip); - bool showSizeGrip = !(q->isHidden() && q->testAttribute(Qt::WA_WState_ExplicitShowHide)); - updateTopLevelWidget(); - if (tlw && showSizeGrip) { - Qt::WindowStates sizeGripNotVisibleState = Qt::WindowFullScreen; -#ifndef Q_WS_MAC - sizeGripNotVisibleState |= Qt::WindowMaximized; -#endif - // Don't show the size grip if the tlw is maximized or in full screen mode. - showSizeGrip = !(tlw->windowState() & sizeGripNotVisibleState); - } - if (showSizeGrip) - q->setVisible(true); - } -}; - -#ifdef Q_WS_MAC -void QSizeGripPrivate::updateMacSizer(bool hide) const -{ - Q_Q(const QSizeGrip); - if (QApplication::closingDown() || !parent) - return; - QWidget *topLevelWindow = qt_sizegrip_topLevelWidget(const_cast<QSizeGrip *>(q)); - if(topLevelWindow && topLevelWindow->isWindow()) - QWidgetPrivate::qt_mac_update_sizer(topLevelWindow, hide ? -1 : 1); -} -#endif - -Qt::Corner QSizeGripPrivate::corner() const -{ - Q_Q(const QSizeGrip); - QWidget *tlw = qt_sizegrip_topLevelWidget(const_cast<QSizeGrip *>(q)); - const QPoint sizeGripPos = q->mapTo(tlw, QPoint(0, 0)); - bool isAtBottom = sizeGripPos.y() >= tlw->height() / 2; - bool isAtLeft = sizeGripPos.x() <= tlw->width() / 2; - if (isAtLeft) - return isAtBottom ? Qt::BottomLeftCorner : Qt::TopLeftCorner; - else - return isAtBottom ? Qt::BottomRightCorner : Qt::TopRightCorner; -} - -/*! - \class QSizeGrip - - \brief The QSizeGrip class provides a resize handle for resizing top-level windows. - - \ingroup mainwindow-classes - \ingroup basicwidgets - - This widget works like the standard Windows resize handle. In the - X11 version this resize handle generally works differently from - the one provided by the system if the X11 window manager does not - support necessary modern post-ICCCM specifications. - - Put this widget anywhere in a widget tree and the user can use it - to resize the top-level window or any widget with the Qt::SubWindow - flag set. Generally, this should be in the lower right-hand corner. - Note that QStatusBar already uses this widget, so if you have a - status bar (e.g., you are using QMainWindow), then you don't need - to use this widget explicitly. - - On some platforms the size grip automatically hides itself when the - window is shown full screen or maximised. - - \table 50% - \row \o \inlineimage plastique-sizegrip.png Screenshot of a Plastique style size grip - \o A size grip widget at the bottom-right corner of a main window, shown in the - \l{Plastique Style Widget Gallery}{Plastique widget style}. - \endtable - - The QSizeGrip class inherits QWidget and reimplements the \l - {QWidget::mousePressEvent()}{mousePressEvent()} and \l - {QWidget::mouseMoveEvent()}{mouseMoveEvent()} functions to feature - the resize functionality, and the \l - {QWidget::paintEvent()}{paintEvent()} function to render the - size grip widget. - - \sa QStatusBar QWidget::windowState() -*/ - - -/*! - Constructs a resize corner as a child widget of the given \a - parent. -*/ -QSizeGrip::QSizeGrip(QWidget * parent) - : QWidget(*new QSizeGripPrivate, parent, 0) -{ - Q_D(QSizeGrip); - d->init(); -} - -#ifdef QT3_SUPPORT -/*! - \obsolete - - Constructs a resize corner with the given \a name, as a child - widget of the given \a parent. -*/ -QSizeGrip::QSizeGrip(QWidget * parent, const char* name) - : QWidget(*new QSizeGripPrivate, parent, 0) -{ - Q_D(QSizeGrip); - setObjectName(QString::fromAscii(name)); - d->init(); -} -#endif - -void QSizeGripPrivate::init() -{ - Q_Q(QSizeGrip); - dxMax = 0; - dyMax = 0; - tlw = 0; - m_corner = q->isLeftToRight() ? Qt::BottomRightCorner : Qt::BottomLeftCorner; - gotMousePress = false; - -#if !defined(QT_NO_CURSOR) && !defined(Q_WS_MAC) - q->setCursor(m_corner == Qt::TopLeftCorner || m_corner == Qt::BottomRightCorner - ? Qt::SizeFDiagCursor : Qt::SizeBDiagCursor); -#endif - q->setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Fixed)); - updateTopLevelWidget(); -} - - -/*! - Destroys this size grip. -*/ -QSizeGrip::~QSizeGrip() -{ -} - -/*! - \reimp -*/ -QSize QSizeGrip::sizeHint() const -{ - QStyleOption opt(0); - opt.init(this); - return (style()->sizeFromContents(QStyle::CT_SizeGrip, &opt, QSize(13, 13), this). - expandedTo(QApplication::globalStrut())); -} - -/*! - Paints the resize grip. - - Resize grips are usually rendered as small diagonal textured lines - in the lower-right corner. The paint event is passed in the \a - event parameter. -*/ -void QSizeGrip::paintEvent(QPaintEvent *event) -{ - Q_UNUSED(event); - Q_D(QSizeGrip); - QPainter painter(this); - QStyleOptionSizeGrip opt; - opt.init(this); - opt.corner = d->m_corner; - style()->drawControl(QStyle::CE_SizeGrip, &opt, &painter, this); -} - -/*! - \fn void QSizeGrip::mousePressEvent(QMouseEvent * event) - - Receives the mouse press events for the widget, and primes the - resize operation. The mouse press event is passed in the \a event - parameter. -*/ -void QSizeGrip::mousePressEvent(QMouseEvent * e) -{ - if (e->button() != Qt::LeftButton) { - QWidget::mousePressEvent(e); - return; - } - - Q_D(QSizeGrip); - QWidget *tlw = qt_sizegrip_topLevelWidget(this); - d->p = e->globalPos(); - d->gotMousePress = true; - d->r = tlw->geometry(); - -#ifdef Q_WS_X11 - // Use a native X11 sizegrip for "real" top-level windows if supported. - if (tlw->isWindow() && X11->isSupportedByWM(ATOM(_NET_WM_MOVERESIZE)) - && !(tlw->windowFlags() & Qt::X11BypassWindowManagerHint) - && !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) { - XEvent xev; - xev.xclient.type = ClientMessage; - xev.xclient.message_type = ATOM(_NET_WM_MOVERESIZE); - xev.xclient.display = X11->display; - xev.xclient.window = tlw->winId(); - xev.xclient.format = 32; - xev.xclient.data.l[0] = e->globalPos().x(); - xev.xclient.data.l[1] = e->globalPos().y(); - if (d->atBottom()) - xev.xclient.data.l[2] = d->atLeft() ? 6 : 4; // bottomleft/bottomright - else - xev.xclient.data.l[2] = d->atLeft() ? 0 : 2; // topleft/topright - xev.xclient.data.l[3] = Button1; - xev.xclient.data.l[4] = 0; - XUngrabPointer(X11->display, X11->time); - XSendEvent(X11->display, QX11Info::appRootWindow(x11Info().screen()), False, - SubstructureRedirectMask | SubstructureNotifyMask, &xev); - return; - } -#endif // Q_WS_X11 -#ifdef Q_WS_WIN - if (tlw->isWindow() && !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) { - uint orientation = 0; - if (d->atBottom()) - orientation = d->atLeft() ? SZ_SIZEBOTTOMLEFT : SZ_SIZEBOTTOMRIGHT; - else - orientation = d->atLeft() ? SZ_SIZETOPLEFT : SZ_SIZETOPRIGHT; - - ReleaseCapture(); - PostMessage(tlw->winId(), WM_SYSCOMMAND, orientation, 0); - return; - } -#endif // Q_WS_WIN - - // Find available desktop/workspace geometry. - QRect availableGeometry; - bool hasVerticalSizeConstraint = true; - bool hasHorizontalSizeConstraint = true; - if (tlw->isWindow()) - availableGeometry = QApplication::desktop()->availableGeometry(tlw); - else { - const QWidget *tlwParent = tlw->parentWidget(); - // Check if tlw is inside QAbstractScrollArea/QScrollArea. - // If that's the case tlw->parentWidget() will return the viewport - // and tlw->parentWidget()->parentWidget() will return the scroll area. -#ifndef QT_NO_SCROLLAREA - QAbstractScrollArea *scrollArea = qobject_cast<QAbstractScrollArea *>(tlwParent->parentWidget()); - if (scrollArea) { - hasHorizontalSizeConstraint = scrollArea->horizontalScrollBarPolicy() == Qt::ScrollBarAlwaysOff; - hasVerticalSizeConstraint = scrollArea->verticalScrollBarPolicy() == Qt::ScrollBarAlwaysOff; - } -#endif // QT_NO_SCROLLAREA - availableGeometry = tlwParent->contentsRect(); - } - - // Find frame geometries, title bar height, and decoration sizes. - const QRect frameGeometry = tlw->frameGeometry(); - const int titleBarHeight = qMax(tlw->geometry().y() - frameGeometry.y(), 0); - const int bottomDecoration = qMax(frameGeometry.height() - tlw->height() - titleBarHeight, 0); - const int leftRightDecoration = qMax((frameGeometry.width() - tlw->width()) / 2, 0); - - // Determine dyMax depending on whether the sizegrip is at the bottom - // of the widget or not. - if (d->atBottom()) { - if (hasVerticalSizeConstraint) - d->dyMax = availableGeometry.bottom() - d->r.bottom() - bottomDecoration; - else - d->dyMax = INT_MAX; - } else { - if (hasVerticalSizeConstraint) - d->dyMax = availableGeometry.y() - d->r.y() + titleBarHeight; - else - d->dyMax = -INT_MAX; - } - - // In RTL mode, the size grip is to the left; find dxMax from the desktop/workspace - // geometry, the size grip geometry and the width of the decoration. - if (d->atLeft()) { - if (hasHorizontalSizeConstraint) - d->dxMax = availableGeometry.x() - d->r.x() + leftRightDecoration; - else - d->dxMax = -INT_MAX; - } else { - if (hasHorizontalSizeConstraint) - d->dxMax = availableGeometry.right() - d->r.right() - leftRightDecoration; - else - d->dxMax = INT_MAX; - } -} - - -/*! - \fn void QSizeGrip::mouseMoveEvent(QMouseEvent * event) - Resizes the top-level widget containing this widget. The mouse - move event is passed in the \a event parameter. -*/ -void QSizeGrip::mouseMoveEvent(QMouseEvent * e) -{ - if (e->buttons() != Qt::LeftButton) { - QWidget::mouseMoveEvent(e); - return; - } - - Q_D(QSizeGrip); - QWidget* tlw = qt_sizegrip_topLevelWidget(this); - if (!d->gotMousePress || tlw->testAttribute(Qt::WA_WState_ConfigPending)) - return; - -#ifdef Q_WS_X11 - if (tlw->isWindow() && X11->isSupportedByWM(ATOM(_NET_WM_MOVERESIZE)) - && tlw->isTopLevel() && !(tlw->windowFlags() & Qt::X11BypassWindowManagerHint) - && !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) - return; -#endif -#ifdef Q_WS_WIN - if (tlw->isWindow() && GetSystemMenu(tlw->winId(), FALSE) != 0 && internalWinId() - && !tlw->testAttribute(Qt::WA_DontShowOnScreen) && !qt_widget_private(tlw)->hasHeightForWidth()) { - MSG msg; - while(PeekMessage(&msg, winId(), WM_MOUSEMOVE, WM_MOUSEMOVE, PM_REMOVE)); - return; - } -#endif - - QPoint np(e->globalPos()); - - // Don't extend beyond the available geometry; bound to dyMax and dxMax. - QSize ns; - if (d->atBottom()) - ns.rheight() = d->r.height() + qMin(np.y() - d->p.y(), d->dyMax); - else - ns.rheight() = d->r.height() - qMax(np.y() - d->p.y(), d->dyMax); - - if (d->atLeft()) - ns.rwidth() = d->r.width() - qMax(np.x() - d->p.x(), d->dxMax); - else - ns.rwidth() = d->r.width() + qMin(np.x() - d->p.x(), d->dxMax); - - ns = QLayout::closestAcceptableSize(tlw, ns); - - QPoint p; - QRect nr(p, ns); - if (d->atBottom()) { - if (d->atLeft()) - nr.moveTopRight(d->r.topRight()); - else - nr.moveTopLeft(d->r.topLeft()); - } else { - if (d->atLeft()) - nr.moveBottomRight(d->r.bottomRight()); - else - nr.moveBottomLeft(d->r.bottomLeft()); - } - - tlw->setGeometry(nr); -} - -/*! - \reimp -*/ -void QSizeGrip::mouseReleaseEvent(QMouseEvent *mouseEvent) -{ - if (mouseEvent->button() == Qt::LeftButton) { - Q_D(QSizeGrip); - d->gotMousePress = false; - d->p = QPoint(); - } else { - QWidget::mouseReleaseEvent(mouseEvent); - } -} - -/*! - \reimp -*/ -void QSizeGrip::moveEvent(QMoveEvent * /*moveEvent*/) -{ - Q_D(QSizeGrip); - // We're inside a resize operation; no update necessary. - if (!d->p.isNull()) - return; - - d->m_corner = d->corner(); -#if !defined(QT_NO_CURSOR) && !defined(Q_WS_MAC) - setCursor(d->m_corner == Qt::TopLeftCorner || d->m_corner == Qt::BottomRightCorner - ? Qt::SizeFDiagCursor : Qt::SizeBDiagCursor); -#endif -} - -/*! - \reimp -*/ -void QSizeGrip::showEvent(QShowEvent *showEvent) -{ -#ifdef Q_WS_MAC - d_func()->updateMacSizer(false); -#endif - QWidget::showEvent(showEvent); -} - -/*! - \reimp -*/ -void QSizeGrip::hideEvent(QHideEvent *hideEvent) -{ -#ifdef Q_WS_MAC - d_func()->updateMacSizer(true); -#endif - QWidget::hideEvent(hideEvent); -} - -/*! - \reimp -*/ -void QSizeGrip::setVisible(bool visible) -{ - QWidget::setVisible(visible); -} - -/*! \reimp */ -bool QSizeGrip::eventFilter(QObject *o, QEvent *e) -{ - Q_D(QSizeGrip); - if ((isHidden() && testAttribute(Qt::WA_WState_ExplicitShowHide)) - || e->type() != QEvent::WindowStateChange - || o != d->tlw) { - return QWidget::eventFilter(o, e); - } - Qt::WindowStates sizeGripNotVisibleState = Qt::WindowFullScreen; -#ifndef Q_WS_MAC - sizeGripNotVisibleState |= Qt::WindowMaximized; -#endif - // Don't show the size grip if the tlw is maximized or in full screen mode. - setVisible(!(d->tlw->windowState() & sizeGripNotVisibleState)); - setAttribute(Qt::WA_WState_ExplicitShowHide, false); - return QWidget::eventFilter(o, e); -} - -/*! - \reimp -*/ -bool QSizeGrip::event(QEvent *event) -{ - return QWidget::event(event); -} - -#ifdef Q_WS_WIN -/*! \reimp */ -bool QSizeGrip::winEvent( MSG *m, long *result ) -{ - return QWidget::winEvent(m, result); -} -#endif - -QT_END_NAMESPACE - -#include "moc_qsizegrip.cpp" - -#endif //QT_NO_SIZEGRIP |