QPainter startPainter(&startImage);
stateId = PBS_DEFAULTED;
XPThemeData theme(widget, &startPainter, name, partId, stateId, rect);
- d->drawBackground(theme, true); // Do not draw on HDC of backing store.
+ d->drawBackground(theme);
QPainter alternatePainter(&alternateImage);
theme.stateId = PBS_DEFAULTED_ANIMATING;
theme.painter = &alternatePainter;
- d->drawBackground(theme, true); // Do not draw on HDC of backing store.
+ d->drawBackground(theme);
pulse->setPrimaryImage(startImage);
pulse->setAlternateImage(alternateImage);
pulse->setStartTime(QTime::currentTime());
extern Q_WIDGETS_EXPORT HDC qt_win_display_dc();
extern QRegion qt_region_from_HRGN(HRGN rgn);
+static inline QBackingStore *backingStoreForWidget(const QWidget *widget)
+{
+ if (QBackingStore *backingStore = widget->backingStore())
+ return backingStore;
+ if (const QWidget *topLevel = widget->nativeParentWidget())
+ if (QBackingStore *topLevelBackingStore = topLevel->backingStore())
+ return topLevelBackingStore;
+ return 0;
+}
+static inline HDC hdcForWidgetBackingStore(const QWidget *widget)
+{
+ if (QBackingStore *backingStore = backingStoreForWidget(widget)) {
+ QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
+ return static_cast<HDC>(nativeInterface->nativeResourceForBackingStore(QByteArrayLiteral("getDC"), backingStore));
+ }
+ return 0;
+}
// Theme data helper ------------------------------------------------------------------------------
/* \internal
HRGN hrgn;
HDC dc = 0;
- if (widget) {
- QBackingStore *backingStore = widget->backingStore();
- QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
- dc = static_cast<HDC>(nativeInterface->nativeResourceForBackingStore("getDC", backingStore));
- }
+ if (widget)
+ dc = hdcForWidgetBackingStore(widget);
RECT nativeRect = toRECT(rect);
pGetThemeBackgroundRegion(handle(), dc, partId, stateId, &nativeRect, &hrgn);
return hrgn;
- Theme part is flipped (mirrored horizontally)
else use drawBackgroundDirectly().
*/
-void QWindowsXPStylePrivate::drawBackground(XPThemeData &themeData, bool forceFallback)
+void QWindowsXPStylePrivate::drawBackground(XPThemeData &themeData)
{
if (themeData.rect.isEmpty())
return;
translucentToplevel = win->testAttribute(Qt::WA_TranslucentBackground);
}
- HDC dc = 0;
- if (themeData.widget) {
- QBackingStore *backingStore = themeData.widget->backingStore();
- QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
- dc = static_cast<HDC>(nativeInterface->nativeResourceForBackingStore("getDC", backingStore ));
- }
-
- const bool useFallback = forceFallback || dc == 0
- || painter->opacity() != 1.0
- || themeData.rotate
- || complexXForm
- || themeData.mirrorVertically
- || (themeData.mirrorHorizontally && pDrawThemeBackgroundEx == 0)
- || translucentToplevel;
- if (!useFallback)
+ // Draw on backing store DC only for real widgets.
+ const bool useFallback = !themeData.widget || painter->device()->devType() != QInternal::Widget
+ || painter->opacity() != 1.0 || themeData.rotate
+ || complexXForm || themeData.mirrorVertically
+ || (themeData.mirrorHorizontally && pDrawThemeBackgroundEx == 0)
+ || translucentToplevel;
+ const HDC dc = useFallback ? HDC(0) : hdcForWidgetBackingStore(themeData.widget);
+ if (dc && !useFallback) {
drawBackgroundDirectly(themeData);
- else
+ } else {
drawBackgroundThruNativeBuffer(themeData);
+ }
painter->restore();
}
{
QPainter *painter = themeData.painter;
HDC dc = 0;
- if (themeData.widget) {
- QBackingStore *backingStore = themeData.widget->backingStore();
- QPlatformNativeInterface *nativeInterface = QGuiApplication::platformNativeInterface();
- dc = static_cast<HDC>(nativeInterface->nativeResourceForBackingStore("getDC", backingStore));
- }
+ if (themeData.widget)
+ dc = hdcForWidgetBackingStore(themeData.widget);
QPoint redirectionDelta(int(painter->deviceMatrix().dx()),
int(painter->deviceMatrix().dy()));