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Fixed 'QtWin' bug about changing of desktop composition state.

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This commit is contained in:
S. Razi Alavizadeh 2012-08-21 00:17:43 +04:30
parent 07e17f7b47
commit dbcbabdec3
1 changed files with 10 additions and 0 deletions
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10
src/lib/3rdparty/qtwin.cpp vendored
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@ -65,6 +65,7 @@ static PtrDwmEnableBlurBehindWindow pDwmEnableBlurBehindWindow = 0;
static PtrDwmExtendFrameIntoClientArea pDwmExtendFrameIntoClientArea = 0;
static PtrDwmGetColorizationColor pDwmGetColorizationColor = 0;
QHash<QWidget *, bool> widgetsBlurState = QHash<QWidget *, bool>();
/*
* Internal helper class that notifies windows if the
@ -169,6 +170,7 @@ bool QtWin::enableBlurBehindWindow(QWidget* widget, bool enable)
if (SUCCEEDED(hr)) {
result = true;
windowNotifier()->addWidget(widget);
widgetsBlurState.insert(widget, true);
}
}
#endif
@ -207,6 +209,7 @@ bool QtWin::extendFrameIntoClientArea(QWidget* widget, int left, int top, int ri
if (SUCCEEDED(hr)) {
result = true;
windowNotifier()->addWidget(widget);
widgetsBlurState.insert(widget, true);
}
widget->setAttribute(Qt::WA_TranslucentBackground, result);
}
@ -257,6 +260,13 @@ bool WindowNotifier::winEvent(MSG* message, long* result)
foreach(QWidget * widget, widgets) {
if (widget) {
widget->setAttribute(Qt::WA_NoSystemBackground, compositionEnabled);
bool isBlur = widgetsBlurState.value(widget, false);
if (compositionEnabled && isBlur)
{
// hack for fixing black background when enabling composition
QtWin::enableBlurBehindWindow(widget, false);
QtWin::extendFrameIntoClientArea(widget);
}
widget->update();
}
}