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Bug 641599. Completely flush all ThebesLayers whenever the appunits-per-dev-pixel ratio changes. r=tnikkel

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This commit is contained in:
Robert O'Callahan 2011-04-11 16:57:29 -04:00
parent d532809012
commit ca12f5328f
2 changed files with 29 additions and 13 deletions
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40
layout/base/nsPresContext.cpp
View File

@ -97,6 +97,7 @@
#include "nsTransitionManager.h"
#include "mozilla/dom/Element.h"
#include "nsIFrameMessageManager.h"
#include "FrameLayerBuilder.h"
#ifdef MOZ_SMIL
#include "nsSMILAnimationController.h"
@ -116,8 +117,7 @@
//needed for resetting of image service color
#include "nsLayoutCID.h"
using mozilla::TimeDuration;
using mozilla::TimeStamp;
using namespace mozilla;
using namespace mozilla::dom;
static nscolor
@ -771,6 +771,26 @@ nsPresContext::GetUserPreferences()
SetBidi(bidiOptions, PR_FALSE);
}
void
nsPresContext::AppUnitsPerDevPixelChanged()
{
nsIFrame* rootFrame = mShell->FrameManager()->GetRootFrame();
if (rootFrame) {
// FrameLayerBuilder caches invalidation-related values that depend on the
// appunits-per-dev-pixel ratio, so ensure that all ThebesLayer drawing
// is completely flushed.
FrameLayerBuilder::InvalidateThebesLayersInSubtree(rootFrame);
}
mDeviceContext->FlushFontCache();
// All cached style data must be recomputed.
if (HasCachedStyleData()) {
MediaFeatureValuesChanged(PR_TRUE);
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
}
}
void
nsPresContext::PreferenceChanged(const char* aPrefName)
{
@ -779,8 +799,6 @@ nsPresContext::PreferenceChanged(const char* aPrefName)
prefName.EqualsLiteral("layout.css.devPixelsPerPx")) {
PRInt32 oldAppUnitsPerDevPixel = AppUnitsPerDevPixel();
if (mDeviceContext->CheckDPIChange() && mShell) {
mDeviceContext->FlushFontCache();
// Re-fetch the view manager's window dimensions in case there's a deferred
// resize which hasn't affected our mVisibleArea yet
nscoord oldWidthAppUnits, oldHeightAppUnits;
@ -793,8 +811,7 @@ nsPresContext::PreferenceChanged(const char* aPrefName)
nscoord height = NSToCoordRound(oldHeightDevPixels*AppUnitsPerDevPixel());
vm->SetWindowDimensions(width, height);
MediaFeatureValuesChanged(PR_TRUE);
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
AppUnitsPerDevPixelChanged();
}
return;
}
@ -1314,15 +1331,14 @@ nsPresContext::SetFullZoom(float aZoom)
if (!mShell || mFullZoom == aZoom) {
return;
}
// Re-fetch the view manager's window dimensions in case there's a deferred
// resize which hasn't affected our mVisibleArea yet
nscoord oldWidthAppUnits, oldHeightAppUnits;
mShell->GetViewManager()->GetWindowDimensions(&oldWidthAppUnits, &oldHeightAppUnits);
float oldWidthDevPixels = oldWidthAppUnits / float(mCurAppUnitsPerDevPixel);
float oldHeightDevPixels = oldHeightAppUnits / float(mCurAppUnitsPerDevPixel);
if (mDeviceContext->SetPixelScale(aZoom)) {
mDeviceContext->FlushFontCache();
}
mDeviceContext->SetPixelScale(aZoom);
NS_ASSERTION(!mSupressResizeReflow, "two zooms happening at the same time? impossible!");
mSupressResizeReflow = PR_TRUE;
@ -1331,10 +1347,8 @@ nsPresContext::SetFullZoom(float aZoom)
mShell->GetViewManager()->
SetWindowDimensions(NSToCoordRound(oldWidthDevPixels * AppUnitsPerDevPixel()),
NSToCoordRound(oldHeightDevPixels * AppUnitsPerDevPixel()));
if (HasCachedStyleData()) {
MediaFeatureValuesChanged(PR_TRUE);
RebuildAllStyleData(NS_STYLE_HINT_REFLOW);
}
AppUnitsPerDevPixelChanged();
mSupressResizeReflow = PR_FALSE;

2
layout/base/nsPresContext.h
View File

@ -1029,6 +1029,8 @@ protected:
NS_HIDDEN_(void) UpdateCharSet(const nsAFlatCString& aCharSet);
void AppUnitsPerDevPixelChanged();
PRBool MayHavePaintEventListener();
void HandleRebuildUserFontSet() {