diff options
Diffstat (limited to 'src/gui/kernel/qwindowsysteminterface.cpp')
-rw-r--r-- | src/gui/kernel/qwindowsysteminterface.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/gui/kernel/qwindowsysteminterface.cpp b/src/gui/kernel/qwindowsysteminterface.cpp index 7067ece1d8..b0f2869128 100644 --- a/src/gui/kernel/qwindowsysteminterface.cpp +++ b/src/gui/kernel/qwindowsysteminterface.cpp @@ -780,6 +780,70 @@ QT_DEFINE_QPA_EVENT_HANDLER(void, handleTouchCancelEvent, QWindow *window, ulong QWindowSystemInterfacePrivate::handleWindowSystemEvent<Delivery>(e); } +/*! + Should be called by the implementation whenever a new screen is added. + + The first screen added will be the primary screen, used for default-created + windows, GL contexts, and other resources unless otherwise specified. + + This adds the screen to QGuiApplication::screens(), and emits the + QGuiApplication::screenAdded() signal. + + The screen should be deleted by calling QWindowSystemInterface::handleScreenRemoved(). +*/ +void QWindowSystemInterface::handleScreenAdded(QPlatformScreen *ps, bool isPrimary) +{ + QScreen *screen = new QScreen(ps); + + if (isPrimary) + QGuiApplicationPrivate::screen_list.prepend(screen); + else + QGuiApplicationPrivate::screen_list.append(screen); + + emit qGuiApp->screenAdded(screen); + + if (isPrimary) + emit qGuiApp->primaryScreenChanged(screen); +} + +/*! + Should be called by the implementation whenever a screen is removed. + + This removes the screen from QGuiApplication::screens(), and deletes it. + + Failing to call this and manually deleting the QPlatformScreen instead may + lead to a crash due to a pure virtual call. +*/ +void QWindowSystemInterface::handleScreenRemoved(QPlatformScreen *platformScreen) +{ +QT_WARNING_PUSH +QT_WARNING_DISABLE_DEPRECATED + QGuiApplicationPrivate::platformIntegration()->removeScreen(platformScreen->screen()); +QT_WARNING_POP + + // Important to keep this order since the QSceen doesn't own the platform screen + delete platformScreen->screen(); + delete platformScreen; +} + +/*! + Should be called whenever the primary screen changes. + + When the screen specified as primary changes, this method will notify + QGuiApplication and emit the QGuiApplication::primaryScreenChanged signal. + */ +void QWindowSystemInterface::handlePrimaryScreenChanged(QPlatformScreen *newPrimary) +{ + QScreen *newPrimaryScreen = newPrimary->screen(); + int indexOfScreen = QGuiApplicationPrivate::screen_list.indexOf(newPrimaryScreen); + Q_ASSERT(indexOfScreen >= 0); + if (indexOfScreen == 0) + return; + + QGuiApplicationPrivate::screen_list.swap(0, indexOfScreen); + emit qGuiApp->primaryScreenChanged(newPrimaryScreen); +} + void QWindowSystemInterface::handleScreenOrientationChange(QScreen *screen, Qt::ScreenOrientation orientation) { QWindowSystemInterfacePrivate::ScreenOrientationEvent *e = |