path: root/src/widgets/kernel/qshortcut_widgets.cpp

// Copyright (C) 2016 The Qt Company Ltd.// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only#include"qshortcut.h"#include"private/qshortcut_p.h"#include"private/qwidget_p.h"#include <qevent.h>#if QT_CONFIG(whatsthis)#include <qwhatsthis.h>#endif#if QT_CONFIG(menu)#include <qmenu.h>#endif#if QT_CONFIG(menubar)#include <qmenubar.h>#endif#include <qapplication.h>#include <private/qapplication_p.h>#include <private/qshortcutmap_p.h>#if QT_CONFIG(action)# include <private/qaction_p.h>#endif#include <private/qwidgetwindow_p.h>#include <qpa/qplatformmenu.h> QT_BEGIN_NAMESPACE static boolcorrectWidgetContext(Qt::ShortcutContext context, QWidget *w, QWidget *active_window);#if QT_CONFIG(graphicsview)static boolcorrectGraphicsWidgetContext(Qt::ShortcutContext context, QGraphicsWidget *w, QWidget *active_window);#endif#if QT_CONFIG(action)static boolcorrectActionContext(Qt::ShortcutContext context, QAction *a, QWidget *active_window);#endif/*! \internal Returns \c true if the widget \a w is a logical sub window of the current top-level widget.*/boolqWidgetShortcutContextMatcher(QObject *object,Qt::ShortcutContext context){Q_ASSERT_X(object,"QShortcutMap","Shortcut has no owner. Illegal map state!"); QWidget *active_window =QApplication::activeWindow();// popups do not become the active window,// so we fake it here to get the correct context// for the shortcut system.if(QApplication::activePopupWidget()) active_window =QApplication::activePopupWidget();if(!active_window) { QWindow *qwindow =QGuiApplication::focusWindow();if(qwindow && qwindow->isActive()) {while(qwindow) {if(auto widgetWindow = qobject_cast<QWidgetWindow *>(qwindow)) { active_window = widgetWindow->widget();break;} qwindow = qwindow->parent();}}}#if QT_CONFIG(action)if(auto a = qobject_cast<QAction *>(object))returncorrectActionContext(context, a, active_window);#endif#if QT_CONFIG(graphicsview)if(auto gw = qobject_cast<QGraphicsWidget *>(object))returncorrectGraphicsWidgetContext(context, gw, active_window);#endifauto w = qobject_cast<QWidget *>(object);if(!w) {if(auto s = qobject_cast<QShortcut *>(object)) w = qobject_cast<QWidget *>(s->parent());}if(!w) {auto qwindow = qobject_cast<QWindow *>(object);while(qwindow) {if(auto widget_window = qobject_cast<QWidgetWindow *>(qwindow)) { w = widget_window->widget();break;} qwindow = qwindow->parent();}}if(w)returncorrectWidgetContext(context, w, active_window);returnQShortcutPrivate::simpleContextMatcher(object, context);}static boolcorrectWidgetContext(Qt::ShortcutContext context, QWidget *w, QWidget *active_window){if(!active_window)return false;bool visible = w->isVisible();#if QT_CONFIG(menubar)if(auto menuBar = qobject_cast<QMenuBar *>(w)) {if(auto*pmb = menuBar->platformMenuBar()) {if(menuBar->parentWidget()) { visible =true;}else{if(auto*ww = qobject_cast<QWidgetWindow *>(pmb->parentWindow())) w = ww->widget();// Good enough since we only care about the windowelsereturn false;// This is not a QWidget window. We won't deliver}}}#endifif(!visible || !w->isEnabled())return false;if(context ==Qt::ApplicationShortcut)returnQApplicationPrivate::tryModalHelper(w,nullptr);// true, unless w is shadowed by a modal dialogif(context ==Qt::WidgetShortcut)return w ==QApplication::focusWidget();if(context ==Qt::WidgetWithChildrenShortcut) {const QWidget *tw =QApplication::focusWidget();while(tw && tw != w && (tw->windowType() ==Qt::Widget || tw->windowType() ==Qt::Popup || tw->windowType() ==Qt::SubWindow)) tw = tw->parentWidget();return tw == w;}// Below is Qt::WindowShortcut context QWidget *tlw = w->window();#if QT_CONFIG(graphicsview)if(auto topData =static_cast<QWidgetPrivate *>(QObjectPrivate::get(tlw))->extra.get()) {if(topData->proxyWidget) {bool res =correctGraphicsWidgetContext(context, topData->proxyWidget, active_window);return res;}}#endifif(active_window && active_window != tlw) {/* if a floating tool window is active, keep shortcuts on the parent working. * and if a popup window is active (f.ex a completer), keep shortcuts on the * focus proxy working */if(active_window->windowType() ==Qt::Tool && active_window->parentWidget()) { active_window = active_window->parentWidget()->window();}else if(active_window->windowType() ==Qt::Popup && active_window->focusProxy()) { active_window = active_window->focusProxy()->window();}}if(active_window != tlw) {#if QT_CONFIG(menubar)// If the tlw is a QMenuBar then we allow it to proceed as this indicates that// the QMenuBar is a parentless one and is therefore used for multiple top level// windows in the application. This is common on macOS platforms for example.if(!qobject_cast<QMenuBar *>(tlw))#endifreturn false;}/* if we live in a MDI subwindow, ignore the event if we are not the active document window */const QWidget* sw = w;while(sw && !(sw->windowType() ==Qt::SubWindow) && !sw->isWindow()) sw = sw->parentWidget();if(sw && (sw->windowType() ==Qt::SubWindow)) { QWidget *focus_widget =QApplication::focusWidget();while(focus_widget && focus_widget != sw) focus_widget = focus_widget->parentWidget();return sw == focus_widget;}#if defined(DEBUG_QSHORTCUTMAP)qDebug().nospace() <<"..true [Pass-through]";#endifreturnQApplicationPrivate::tryModalHelper(w,nullptr);}#if QT_CONFIG(graphicsview)static boolcorrectGraphicsWidgetContext(Qt::ShortcutContext context, QGraphicsWidget *w, QWidget *active_window){if(!active_window)return false;bool visible = w->isVisible();#if defined(Q_OS_DARWIN) && QT_CONFIG(menubar)if(!QCoreApplication::testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w)) visible =true;#endifif(!visible || !w->isEnabled() || !w->scene())return false;if(context ==Qt::ApplicationShortcut) {// Applicationwide shortcuts are always reachable unless their owner// is shadowed by modality. In QGV there's no modality concept, but we// must still check if all views are shadowed.constauto&views = w->scene()->views();for(auto view : views) {if(QApplicationPrivate::tryModalHelper(view,nullptr))return true;}return false;}if(context ==Qt::WidgetShortcut)return static_cast<QGraphicsItem *>(w) == w->scene()->focusItem();if(context ==Qt::WidgetWithChildrenShortcut) {const QGraphicsItem *ti = w->scene()->focusItem();if(ti && ti->isWidget()) {constauto*tw =static_cast<const QGraphicsWidget *>(ti);while(tw && tw != w && (tw->windowType() ==Qt::Widget || tw->windowType() ==Qt::Popup)) tw = tw->parentWidget();return tw == w;}return false;}// Below is Qt::WindowShortcut context// Find the active view (if any).constauto&views = w->scene()->views(); QGraphicsView *activeView =nullptr;for(auto view : views) {if(view->window() == active_window) { activeView = view;break;}}if(!activeView)return false;// The shortcut is reachable if owned by a windowless widget, or if the// widget's window is the same as the focus item's window. QGraphicsWidget *a = w->scene()->activeWindow();return!w->window() || a == w->window();}#endif#if QT_CONFIG(action)static boolcorrectActionContext(Qt::ShortcutContext context, QAction *a, QWidget *active_window){if(!active_window)return false;const QObjectList associatedObjects = a->associatedObjects();#if defined(DEBUG_QSHORTCUTMAP)if(associatedObjects.isEmpty())qDebug() << a <<"not connected to any widgets; won't trigger";#endiffor(auto object : associatedObjects) {#if QT_CONFIG(menu)if(auto menu = qobject_cast<QMenu *>(object)) {#ifdef Q_OS_DARWIN// On Mac, menu item shortcuts are processed before reaching any window.// That means that if a menu action shortcut has not been already processed// (and reaches this point), then the menu item itself has been disabled.// This occurs at the QPA level on Mac, where we disable all the Cocoa menus// when showing a modal window. (Notice that only the QPA menu is disabled,// not the QMenu.) Since we can also reach this code by climbing the menu// hierarchy (see below), or when the shortcut is not a key-equivalent, we// need to check whether the QPA menu is actually disabled.// When there is no QPA menu, there will be no QCocoaMenuDelegate checking// for the actual shortcuts. We can then fallback to our own logic. QPlatformMenu *pm = menu->platformMenu();if(pm && !pm->isEnabled())continue;#endif QAction *a = menu->menuAction();if(a->isVisible() && a->isEnabled() &&correctActionContext(context, a, active_window))return true;}else#endifif(auto widget = qobject_cast<QWidget*>(object)) {if(correctWidgetContext(context, widget, active_window))return true;}#if QT_CONFIG(graphicsview)else if(auto graphicsWidget = qobject_cast<QGraphicsWidget*>(object)) {if(correctGraphicsWidgetContext(context, graphicsWidget, active_window))return true;}#endif}return false;}#endif// QT_CONFIG(action)class QtWidgetsShortcutPrivate :public QShortcutPrivate {Q_DECLARE_PUBLIC(QShortcut)public:QtWidgetsShortcutPrivate() =default;QShortcutMap::ContextMatcher contextMatcher()const override {return qWidgetShortcutContextMatcher; }boolhandleWhatsThis() override;};boolQtWidgetsShortcutPrivate::handleWhatsThis(){#if QT_CONFIG(whatsthis)if(QWhatsThis::inWhatsThisMode()) {QWhatsThis::showText(QCursor::pos(), sc_whatsthis);return true;}#endifreturn false;} QShortcutPrivate *QApplicationPrivate::createShortcutPrivate()const{return new QtWidgetsShortcutPrivate;} QT_END_NAMESPACE