diff options
author | Paul Olav Tvete <paul.tvete@theqtcompany.com> | 2015-01-07 15:44:12 +0100 |
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committer | Paul Olav Tvete <paul.tvete@theqtcompany.com> | 2015-01-12 09:48:11 +0100 |
commit | 075ae987c48ce732e6a22c1eba71023fa0ea1775 (patch) | |
tree | 2012048dc9e6bb3ad41f59fe039e564b03ee3ca6 /src/plugins/platforms/xcb/qxcbwindow.cpp | |
parent | 3ba1b989a6c7e22e8f0b92c59c5bbb52cdcab638 (diff) |
X11 devicePixelRatio screen mapping fix
Fix screen detection and window geometry when screens have
different displayPixelRatios.
We must use the native coordinate system to figure out which
screen a window belongs to. Also, when a window moves to a
screen with a different devicePixelRatio, we must recalculate
the Qt geometry.
Task-number: QTBUG-43713
Change-Id: I93063e37354ff88f3c8a13320b76dfb272e43a9c
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbwindow.cpp')
-rw-r--r-- | src/plugins/platforms/xcb/qxcbwindow.cpp | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp index e1ccc3f086..590e296f61 100644 --- a/src/plugins/platforms/xcb/qxcbwindow.cpp +++ b/src/plugins/platforms/xcb/qxcbwindow.cpp @@ -1831,6 +1831,23 @@ void QXcbWindow::handleClientMessageEvent(const xcb_client_message_event_t *even } } +// Temporary workaround for bug in QPlatformScreen::screenForNativeGeometry +// we need the native geometries to detect our screen, but that's not +// available in cross-platform code. Will be fixed properly when highDPI +// support is refactored to expose the native coordinate system. + +QPlatformScreen *QXcbWindow::screenForNativeGeometry(const QRect &newGeometry) const +{ + QXcbScreen *currentScreen = static_cast<QXcbScreen*>(screen()); + if (!parent() && !currentScreen->nativeGeometry().intersects(newGeometry)) { + Q_FOREACH (QPlatformScreen* screen, currentScreen->virtualSiblings()) { + if (static_cast<QXcbScreen*>(screen)->nativeGeometry().intersects(newGeometry)) + return screen; + } + } + return currentScreen; +} + void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *event) { bool fromSendEvent = (event->response_type & 0x80); @@ -1847,15 +1864,23 @@ void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t * } } - QRect rect = mapFromNative(QRect(pos, QSize(event->width, event->height)), int(devicePixelRatio())); + const int dpr = devicePixelRatio(); + const QRect nativeRect = QRect(pos, QSize(event->width, event->height)); + const QRect rect = mapFromNative(nativeRect, dpr); QPlatformWindow::setGeometry(rect); QWindowSystemInterface::handleGeometryChange(window(), rect); - QPlatformScreen *newScreen = screenForGeometry(rect); + QPlatformScreen *newScreen = screenForNativeGeometry(nativeRect); if (newScreen != m_screen) { m_screen = static_cast<QXcbScreen*>(newScreen); QWindowSystemInterface::handleWindowScreenChanged(window(), newScreen->screen()); + int newDpr = devicePixelRatio(); + if (newDpr != dpr) { + QRect newRect = mapFromNative(nativeRect, newDpr); + QPlatformWindow::setGeometry(newRect); + QWindowSystemInterface::handleGeometryChange(window(), newRect); + } } m_configureNotifyPending = false; |