void nsViewManager::WillPaintWindow(nsIWidget* aWidget)
{
if (aWidget) {
nsView* view = nsView::GetViewFor(aWidget);
LayerManager *manager = aWidget->GetLayerManager();
if (view &&
(view->ForcedRepaint() || !manager->NeedsWidgetInvalidation())) {
ProcessPendingUpdates();
// Re-get the view pointer here since the ProcessPendingUpdates might have
// destroyed it during CallWillPaintOnObservers.
view = nsView::GetViewFor(aWidget);
if (view) {
view->SetForcedRepaint(false);
}
}
}
nsCOMPtr<nsIPresShell> shell = mPresShell;
if (shell) {
shell->WillPaintWindow();
}
}
/**
aRegion is given in device coordinates!!
aContext may be null, in which case layers should be used for
rendering.
*/
void nsViewManager::Refresh(nsView *aView, const nsIntRegion& aRegion)
{
NS_ASSERTION(aView->GetViewManager() == this, "wrong view manager");
if (mPresShell && mPresShell->IsNeverPainting()) {
return;
}
// damageRegion is the damaged area, in twips, relative to the view origin
nsRegion damageRegion = aRegion.ToAppUnits(AppUnitsPerDevPixel());
// move region from widget coordinates into view coordinates
damageRegion.MoveBy(-aView->ViewToWidgetOffset());
if (damageRegion.IsEmpty()) {
#ifdef DEBUG_roc
nsRect viewRect = aView->GetDimensions();
nsRect damageRect = damageRegion.GetBounds();
printf("XXX Damage rectangle (%d,%d,%d,%d) does not intersect the widget's view (%d,%d,%d,%d)!\n",
damageRect.x, damageRect.y, damageRect.width, damageRect.height,
viewRect.x, viewRect.y, viewRect.width, viewRect.height);
#endif
return;
}
nsIWidget *widget = aView->GetWidget();
if (!widget) {
return;
}
NS_ASSERTION(!IsPainting(), "recursive painting not permitted");
if (IsPainting()) {
RootViewManager()->mRecursiveRefreshPending = true;
return;
}
{
nsAutoScriptBlocker scriptBlocker;
SetPainting(true);
NS_ASSERTION(GetDisplayRootFor(aView) == aView,
"Widgets that we paint must all be display roots");
if (mPresShell) {
#ifdef MOZ_DUMP_PAINTING
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
printf("--COMPOSITE-- %p\n", mPresShell);
}
#endif
uint32_t paintFlags = nsIPresShell::PAINT_COMPOSITE;
LayerManager *manager = widget->GetLayerManager();
if (!manager->NeedsWidgetInvalidation()) {
manager->FlushRendering();
} else {
mPresShell->Paint(aView, damageRegion,
paintFlags);
}
#ifdef MOZ_DUMP_PAINTING
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
printf("--ENDCOMPOSITE--\n");
}
#endif
mozilla::StartupTimeline::RecordOnce(mozilla::StartupTimeline::FIRST_PAINT);
}
SetPainting(false);
}
if (RootViewManager()->mRecursiveRefreshPending) {
RootViewManager()->mRecursiveRefreshPending = false;
InvalidateAllViews();
}
}