diff options
Diffstat (limited to 'src/gui/kernel/qscreen.cpp')
| -rw-r--r-- | src/gui/kernel/qscreen.cpp | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/gui/kernel/qscreen.cpp b/src/gui/kernel/qscreen.cpp index 479e228e27..952023dd1b 100644 --- a/src/gui/kernel/qscreen.cpp +++ b/src/gui/kernel/qscreen.cpp @@ -106,9 +106,18 @@ void QScreenPrivate::setPlatformScreen(QPlatformScreen *screen) */ QScreen::~QScreen() { - if (!qApp) + // Remove screen + const bool wasPrimary = QGuiApplication::primaryScreen() == this; + QGuiApplicationPrivate::screen_list.removeOne(this); + QGuiApplicationPrivate::resetCachedDevicePixelRatio(); + + if (!qGuiApp) return; + QScreen *newPrimaryScreen = QGuiApplication::primaryScreen(); + if (wasPrimary && newPrimaryScreen) + emit qGuiApp->primaryScreenChanged(newPrimaryScreen); + // Allow clients to manage windows that are affected by the screen going // away, before we fall back to moving them to the primary screen. emit qApp->screenRemoved(this); @@ -116,11 +125,8 @@ QScreen::~QScreen() if (QGuiApplication::closingDown()) return; - QScreen *primaryScreen = QGuiApplication::primaryScreen(); - if (this == primaryScreen) - return; - - bool movingFromVirtualSibling = primaryScreen && primaryScreen->handle()->virtualSiblings().contains(handle()); + bool movingFromVirtualSibling = newPrimaryScreen + && newPrimaryScreen->handle()->virtualSiblings().contains(handle()); // Move any leftover windows to the primary screen const auto allWindows = QGuiApplication::allWindows(); @@ -129,7 +135,7 @@ QScreen::~QScreen() continue; const bool wasVisible = window->isVisible(); - window->setScreen(primaryScreen); + window->setScreen(newPrimaryScreen); // Re-show window if moved from a virtual sibling screen. Otherwise // leave it up to the application developer to show the window. @@ -701,6 +707,11 @@ void QScreenPrivate::updatePrimaryOrientation() border of the window. If \a height is negative, the function copies everything to the bottom of the window. + The offset and size arguments are specified in device independent + pixels. The returned pixmap may be larger than the requested size + when grabbing from a high-DPI screen. Call QPixmap::devicePixelRatio() + to determine if this is the case. + The window system identifier (\c WId) can be retrieved using the QWidget::winId() function. The rationale for using a window identifier and not a QWidget, is to enable grabbing of windows @@ -748,7 +759,7 @@ QPixmap QScreen::grabWindow(WId window, int x, int y, int width, int height) QPixmap result = platformScreen->grabWindow(window, nativePos.x(), nativePos.y(), nativeSize.width(), nativeSize.height()); - result.setDevicePixelRatio(factor); + result.setDevicePixelRatio(result.devicePixelRatio() * factor); return result; } |