diff options
Diffstat (limited to 'src/plugins/platforms')
5 files changed, 86 insertions, 0 deletions
diff --git a/src/plugins/platforms/windows/qtwindows_additional.h b/src/plugins/platforms/windows/qtwindows_additional.h index 49ddf3106b..4c08a664d8 100644 --- a/src/plugins/platforms/windows/qtwindows_additional.h +++ b/src/plugins/platforms/windows/qtwindows_additional.h @@ -49,6 +49,10 @@ # define WM_THEMECHANGED 0x031A #endif +#ifndef WM_DWMCOMPOSITIONCHANGED +# define WM_DWMCOMPOSITIONCHANGED 0x31E +#endif + #ifndef GWL_HWNDPARENT # define GWL_HWNDPARENT (-8) #endif diff --git a/src/plugins/platforms/windows/qtwindowsglobal.h b/src/plugins/platforms/windows/qtwindowsglobal.h index 64bf1d71ca..e9eb50799e 100644 --- a/src/plugins/platforms/windows/qtwindowsglobal.h +++ b/src/plugins/platforms/windows/qtwindowsglobal.h @@ -105,6 +105,7 @@ enum WindowsEventType // Simplify event types InputMethodCloseCandidateWindowEvent = InputMethodEventFlag + 5, InputMethodRequest = InputMethodEventFlag + 6, ThemeChanged = ThemingEventFlag + 1, + CompositionSettingsChanged = ThemingEventFlag + 2, DisplayChangedEvent = 437, SettingChangedEvent = DisplayChangedEvent + 1, ContextMenu = 123, @@ -201,6 +202,8 @@ inline QtWindows::WindowsEventType windowsEventType(UINT message, WPARAM wParamI return QtWindows::DisplayChangedEvent; case WM_THEMECHANGED: return QtWindows::ThemeChanged; + case WM_DWMCOMPOSITIONCHANGED: + return QtWindows::CompositionSettingsChanged; #ifndef QT_NO_CONTEXTMENU case WM_CONTEXTMENU: return QtWindows::ContextMenu; diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp index 132b3684e9..c676ca3c46 100644 --- a/src/plugins/platforms/windows/qwindowscontext.cpp +++ b/src/plugins/platforms/windows/qwindowscontext.cpp @@ -884,6 +884,9 @@ bool QWindowsContext::windowsProc(HWND hwnd, UINT message, theme->windowsThemeChanged(platformWindow->window()); return true; } + case QtWindows::CompositionSettingsChanged: + platformWindow->handleCompositionSettingsChanged(); + return true; #ifndef Q_OS_WINCE case QtWindows::ActivateWindowEvent: #ifndef QT_NO_TABLETEVENT diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp index 8ec10294a2..b3b07cc8dd 100644 --- a/src/plugins/platforms/windows/qwindowswindow.cpp +++ b/src/plugins/platforms/windows/qwindowswindow.cpp @@ -56,6 +56,7 @@ #include <QtGui/QScreen> #include <QtGui/QWindow> #include <QtGui/QRegion> +#include <private/qsystemlibrary_p.h> #include <private/qwindow_p.h> #include <private/qguiapplication_p.h> #include <qpa/qwindowsysteminterface.h> @@ -203,6 +204,69 @@ static inline QSize clientSize(HWND hwnd) return qSizeOfRect(rect); } +static bool applyBlurBehindWindow(HWND hwnd) +{ +#ifdef Q_OS_WINCE + Q_UNUSED(hwnd); + return false; +#else + enum { dwmBbEnable = 0x1, dwmBbBlurRegion = 0x2 }; + + struct DwmBlurBehind { + DWORD dwFlags; + BOOL fEnable; + HRGN hRgnBlur; + BOOL fTransitionOnMaximized; + }; + + typedef HRESULT (WINAPI *PtrDwmEnableBlurBehindWindow)(HWND, const DwmBlurBehind*); + typedef HRESULT (WINAPI *PtrDwmIsCompositionEnabled)(BOOL *); + + // DWM API is available only from Windows Vista + if (QSysInfo::windowsVersion() < QSysInfo::WV_VISTA) + return false; + + static bool functionPointersResolved = false; + static PtrDwmEnableBlurBehindWindow dwmBlurBehind = 0; + static PtrDwmIsCompositionEnabled dwmIsCompositionEnabled = 0; + + if (Q_UNLIKELY(!functionPointersResolved)) { + QSystemLibrary library(QStringLiteral("dwmapi")); + if (library.load()) { + dwmBlurBehind = (PtrDwmEnableBlurBehindWindow)(library.resolve("DwmEnableBlurBehindWindow")); + dwmIsCompositionEnabled = (PtrDwmIsCompositionEnabled)(library.resolve("DwmIsCompositionEnabled")); + } + + functionPointersResolved = true; + } + + if (Q_UNLIKELY(!dwmBlurBehind || !dwmIsCompositionEnabled)) + return false; + + BOOL compositionEnabled; + if (dwmIsCompositionEnabled(&compositionEnabled) != S_OK) + return false; + + DwmBlurBehind blurBehind = {0, 0, 0, 0}; + + if (compositionEnabled) { + blurBehind.dwFlags = dwmBbEnable | dwmBbBlurRegion; + blurBehind.fEnable = TRUE; + blurBehind.hRgnBlur = CreateRectRgn(0, 0, -1, -1); + } else { + blurBehind.dwFlags = dwmBbEnable; + blurBehind.fEnable = FALSE; + } + + const bool result = dwmBlurBehind(hwnd, &blurBehind) == S_OK; + + if (blurBehind.hRgnBlur) + DeleteObject(blurBehind.hRgnBlur); + + return result; +#endif // Q_OS_WINCE +} + // from qwidget_win.cpp, pass flags separately in case they have been "autofixed". static bool shouldShowMaximizeButton(const QWindow *w, Qt::WindowFlags flags) { @@ -531,6 +595,10 @@ QWindowsWindow::WindowData result.frame = context->margins; result.embedded = embedded; result.customMargins = context->customMargins; + + if (isGL && hasAlpha) + applyBlurBehindWindow(result.hwnd); + return result; } @@ -1155,6 +1223,13 @@ void QWindowsWindow::handleHidden() fireExpose(QRegion()); } +void QWindowsWindow::handleCompositionSettingsChanged() +{ + const QWindow *w = window(); + if (w->surfaceType() == QWindow::OpenGLSurface && w->format().hasAlpha()) + applyBlurBehindWindow(handle()); +} + void QWindowsWindow::setGeometry(const QRect &rectIn) { QRect rect = rectIn; diff --git a/src/plugins/platforms/windows/qwindowswindow.h b/src/plugins/platforms/windows/qwindowswindow.h index f7d142fc36..d365ac4d97 100644 --- a/src/plugins/platforms/windows/qwindowswindow.h +++ b/src/plugins/platforms/windows/qwindowswindow.h @@ -221,6 +221,7 @@ public: void handleMoved(); void handleResized(int wParam); void handleHidden(); + void handleCompositionSettingsChanged(); static inline HWND handleOf(const QWindow *w); static inline QWindowsWindow *baseWindowOf(const QWindow *w); |