diff options
Diffstat (limited to 'src/gui/kernel/qwindow.cpp')
-rw-r--r-- | src/gui/kernel/qwindow.cpp | 167 |
1 files changed, 108 insertions, 59 deletions
diff --git a/src/gui/kernel/qwindow.cpp b/src/gui/kernel/qwindow.cpp index d6f9fad070..8159b7746e 100644 --- a/src/gui/kernel/qwindow.cpp +++ b/src/gui/kernel/qwindow.cpp @@ -156,9 +156,7 @@ QWindow::QWindow(QScreen *targetScreen) , QSurface(QSurface::Window) { Q_D(QWindow); - d->screen = targetScreen; - if (!d->screen) - d->screen = QGuiApplication::primaryScreen(); + d->connectToScreen(targetScreen ? targetScreen : QGuiApplication::primaryScreen()); d->init(); } @@ -178,10 +176,8 @@ QWindow::QWindow(QWindow *parent) { Q_D(QWindow); d->parentWindow = parent; - if (parent) - d->screen = parent->screen(); - if (!d->screen) - d->screen = QGuiApplication::primaryScreen(); + if (!parent) + d->connectToScreen(QGuiApplication::primaryScreen()); d->init(); } @@ -203,10 +199,8 @@ QWindow::QWindow(QWindowPrivate &dd, QWindow *parent) { Q_D(QWindow); d->parentWindow = parent; - if (parent) - d->screen = parent->screen(); - if (!d->screen) - d->screen = QGuiApplication::primaryScreen(); + if (!parent) + d->connectToScreen(QGuiApplication::primaryScreen()); d->init(); } @@ -215,14 +209,8 @@ QWindow::QWindow(QWindowPrivate &dd, QWindow *parent) */ QWindow::~QWindow() { - if (QGuiApplicationPrivate::focus_window == this) - QGuiApplicationPrivate::focus_window = 0; - if (QGuiApplicationPrivate::currentMouseWindow == this) - QGuiApplicationPrivate::currentMouseWindow = 0; - if (QGuiApplicationPrivate::tabletPressTarget == this) - QGuiApplicationPrivate::tabletPressTarget = 0; - QGuiApplicationPrivate::window_list.removeAll(this); destroy(); + QGuiApplicationPrivate::window_list.removeAll(this); } void QWindowPrivate::init() @@ -231,11 +219,10 @@ void QWindowPrivate::init() // If your application aborts here, you are probably creating a QWindow // before the screen list is populated. - if (!screen) { + if (!parentWindow && !topLevelScreen) { qFatal("Cannot create window: no screens available"); exit(1); } - QObject::connect(screen, SIGNAL(destroyed(QObject*)), q, SLOT(screenDestroyed(QObject*))); QGuiApplicationPrivate::window_list.prepend(q); } @@ -353,23 +340,57 @@ void QWindowPrivate::updateVisibility() emit q->visibilityChanged(visibility); } -void QWindowPrivate::setScreen(QScreen *newScreen, bool recreate) +inline bool QWindowPrivate::windowRecreationRequired(QScreen *newScreen) const +{ + Q_Q(const QWindow); + const QScreen *oldScreen = q->screen(); + return oldScreen != newScreen && platformWindow + && !(oldScreen && oldScreen->virtualSiblings().contains(newScreen)); +} + +inline void QWindowPrivate::disconnectFromScreen() +{ + if (topLevelScreen) { + Q_Q(QWindow); + QObject::disconnect(topLevelScreen, &QObject::destroyed, q, &QWindow::screenDestroyed); + topLevelScreen = 0; + } +} + +void QWindowPrivate::connectToScreen(QScreen *screen) { Q_Q(QWindow); - if (newScreen != screen) { - const bool shouldRecreate = recreate && platformWindow != 0 - && !(screen && screen->virtualSiblings().contains(newScreen)); + disconnectFromScreen(); + topLevelScreen = screen; + if (topLevelScreen) + QObject::connect(topLevelScreen, &QObject::destroyed, q, &QWindow::screenDestroyed); +} + +void QWindowPrivate::emitScreenChangedRecursion(QScreen *newScreen) +{ + Q_Q(QWindow); + emit q->screenChanged(newScreen); + foreach (QObject *child, q->children()) { + if (child->isWindowType()) + static_cast<QWindow *>(child)->d_func()->emitScreenChangedRecursion(newScreen); + } +} + +void QWindowPrivate::setTopLevelScreen(QScreen *newScreen, bool recreate) +{ + Q_Q(QWindow); + if (parentWindow) { + qWarning() << this << Q_FUNC_INFO << '(' << newScreen << "): Attempt to set a screen on a child window."; + return; + } + if (newScreen != topLevelScreen) { + const bool shouldRecreate = recreate && windowRecreationRequired(newScreen); if (shouldRecreate) q->destroy(); - if (screen) - q->disconnect(screen, SIGNAL(destroyed(QObject*)), q, SLOT(screenDestroyed(QObject*))); - screen = newScreen; - if (newScreen) { - q->connect(screen, SIGNAL(destroyed(QObject*)), q, SLOT(screenDestroyed(QObject*))); - if (shouldRecreate) - q->create(); - } - emit q->screenChanged(newScreen); + connectToScreen(newScreen); + if (newScreen && shouldRecreate) + q->create(); + emitScreenChangedRecursion(newScreen); } } @@ -436,11 +457,14 @@ void QWindow::setVisible(bool visible) QCoreApplication::removePostedEvents(qApp, QEvent::Quit); if (type() == Qt::Window) { - QString &firstWindowTitle = QGuiApplicationPrivate::instance()->firstWindowTitle; + QGuiApplicationPrivate *app_priv = QGuiApplicationPrivate::instance(); + QString &firstWindowTitle = app_priv->firstWindowTitle; if (!firstWindowTitle.isEmpty()) { setTitle(firstWindowTitle); firstWindowTitle = QString(); } + if (!app_priv->forcedWindowIcon.isNull()) + setIcon(app_priv->forcedWindowIcon); } QShowEvent showEvent; @@ -549,8 +573,20 @@ QWindow *QWindow::parent() const void QWindow::setParent(QWindow *parent) { Q_D(QWindow); + if (d->parentWindow == parent) + return; + + QScreen *newScreen = parent ? parent->screen() : screen(); + if (d->windowRecreationRequired(newScreen)) { + qWarning() << this << Q_FUNC_INFO << '(' << parent << "): Cannot change screens (" << screen() << newScreen << ')'; + return; + } QObject::setParent(parent); + if (parent) + d->disconnectFromScreen(); + else + d->connectToScreen(newScreen); if (d->platformWindow) { if (parent && parent->d_func()->platformWindow) { @@ -1524,21 +1560,36 @@ void QWindow::resize(const QSize &newSize) void QWindow::destroy() { Q_D(QWindow); + if (!d->platformWindow) + return; + QObjectList childrenWindows = children(); for (int i = 0; i < childrenWindows.size(); i++) { QObject *object = childrenWindows.at(i); if (object->isWindowType()) { QWindow *w = static_cast<QWindow*>(object); - QGuiApplicationPrivate::window_list.removeAll(w); w->destroy(); } } + + if (QGuiApplicationPrivate::focus_window == this) + QGuiApplicationPrivate::focus_window = parent(); + if (QGuiApplicationPrivate::currentMouseWindow == this) + QGuiApplicationPrivate::currentMouseWindow = parent(); + if (QGuiApplicationPrivate::tabletPressTarget == this) + QGuiApplicationPrivate::tabletPressTarget = parent(); + + bool wasVisible = isVisible(); + setVisible(false); delete d->platformWindow; d->resizeEventPending = true; d->receivedExpose = false; d->exposed = false; d->platformWindow = 0; + + if (wasVisible) + d->maybeQuitOnLastWindowClosed(); } /*! @@ -1605,15 +1656,14 @@ bool QWindow::setMouseGrabEnabled(bool grab) /*! Returns the screen on which the window is shown. - The value returned will not change when the window is moved - between virtual screens (as returned by QScreen::virtualSiblings()). + For child windows, this returns the screen of the corresponding top level window. \sa setScreen(), QScreen::virtualSiblings() */ QScreen *QWindow::screen() const { Q_D(const QWindow); - return d->screen; + return d->parentWindow ? d->parentWindow->screen() : d->topLevelScreen; } /*! @@ -1624,6 +1674,8 @@ QScreen *QWindow::screen() const Note that if the screen is part of a virtual desktop of multiple screens, the window can appear on any of the screens returned by QScreen::virtualSiblings(). + This function only works for top level windows. + \sa screen(), QScreen::virtualSiblings() */ void QWindow::setScreen(QScreen *newScreen) @@ -1631,13 +1683,15 @@ void QWindow::setScreen(QScreen *newScreen) Q_D(QWindow); if (!newScreen) newScreen = QGuiApplication::primaryScreen(); - d->setScreen(newScreen, true /* recreate */); + d->setTopLevelScreen(newScreen, true /* recreate */); } void QWindow::screenDestroyed(QObject *object) { Q_D(QWindow); - if (object == static_cast<QObject *>(d->screen)) { + if (d->parentWindow) + return; + if (object == static_cast<QObject *>(d->topLevelScreen)) { const bool wasVisible = isVisible(); setScreen(0); // destroy() might have hidden our window, show it again. @@ -1793,15 +1847,13 @@ bool QWindow::close() if (parent()) return false; - if (QGuiApplicationPrivate::focus_window == this) - QGuiApplicationPrivate::focus_window = 0; - if (QGuiApplicationPrivate::currentMouseWindow == this) - QGuiApplicationPrivate::currentMouseWindow = 0; + if (!d->platformWindow) + return true; - QGuiApplicationPrivate::window_list.removeAll(this); - destroy(); - d->maybeQuitOnLastWindowClosed(); - return true; + bool accepted = false; + QWindowSystemInterface::handleCloseEvent(this, &accepted); + QWindowSystemInterface::flushWindowSystemEvents(); + return accepted; } /*! @@ -1947,15 +1999,10 @@ bool QWindow::event(QEvent *ev) break; #endif - case QEvent::Close: { - Q_D(QWindow); - bool wasVisible = isVisible(); - if (ev->isAccepted()) { + case QEvent::Close: + if (ev->isAccepted()) destroy(); - if (wasVisible) - d->maybeQuitOnLastWindowClosed(); - } - break; } + break; case QEvent::Expose: exposeEvent(static_cast<QExposeEvent *>(ev)); @@ -2167,8 +2214,10 @@ Q_GUI_EXPORT QWindowPrivate *qt_window_private(QWindow *window) void QWindowPrivate::maybeQuitOnLastWindowClosed() { - Q_Q(QWindow); + if (!QCoreApplication::instance()) + return; + Q_Q(QWindow); // Attempt to close the application only if this has WA_QuitOnClose set and a non-visible parent bool quitOnClose = QGuiApplication::quitOnLastWindowClosed() && !q->parent(); @@ -2327,7 +2376,7 @@ void QWindowPrivate::setCursor(const QCursor *newCursor) hasCursor = false; } // Only attempt to set cursor and emit signal if there is an actual platform cursor - if (screen->handle()->cursor()) { + if (q->screen()->handle()->cursor()) { applyCursor(); QEvent event(QEvent::CursorChange); QGuiApplication::sendEvent(q, &event); @@ -2338,7 +2387,7 @@ void QWindowPrivate::applyCursor() { Q_Q(QWindow); if (platformWindow) { - if (QPlatformCursor *platformCursor = screen->handle()->cursor()) { + if (QPlatformCursor *platformCursor = q->screen()->handle()->cursor()) { QCursor *c = QGuiApplication::overrideCursor(); if (!c && hasCursor) c = &cursor; |