[poc] redecode

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 45 matching lines @@
 #include "core/paint/PaintTiming.h"
 #include "core/paint/ScrollableAreaPainter.h"
 #include "core/paint/TransformRecorder.h"
 #include "core/plugins/PluginView.h"
 #include "platform/LengthFunctions.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/geometry/TransformState.h"
 #include "platform/graphics/BitmapImage.h"
 #include "platform/graphics/GraphicsContext.h"
+#include "platform/graphics/GraphicsScreen.h"
 #include "platform/graphics/paint/ClipDisplayItem.h"
 #include "platform/graphics/paint/CullRect.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "platform/graphics/paint/TransformDisplayItem.h"
 #include "wtf/CurrentTime.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 using namespace HTMLNames;
@@ skipping 1838 matching lines @@
     LayoutImage* imageLayoutObject = toLayoutImage(layoutObject());
 
     ImageResource* cachedImage = imageLayoutObject->cachedImage();
     if (!cachedImage)
         return;
 
     Image* image = cachedImage->image();
     if (!image)
         return;
 
+    int64_t previousId = setCurrentScreenId(reinterpret_cast<int64_t>(layoutObject()->frame()->page()));
+
     // This is a no-op if the layer doesn't have an inner layer for the image.
     m_graphicsLayer->setContentsToImage(image, imageLayoutObject->shouldRespectImageOrientation());
 
     m_graphicsLayer->setFilterQuality(layoutObject()->style()->imageRendering() == ImageRenderingPixelated ? kNone_SkFilterQuality : kLow_SkFilterQuality);
 
     // Prevent double-drawing: https://bugs.webkit.org/show_bug.cgi?id=58632
     updateDrawsContent();
 
     // Image animation is "lazy", in that it automatically stops unless someone is drawing
     // the image. So we have to kick the animation each time; this has the downside that the
     // image will keep animating, even if its layer is not visible.
     image->startAnimation();
+
+    setCurrentScreenId(previousId);
 }
 
 FloatPoint3D CompositedLayerMapping::computeTransformOrigin(const IntRect& borderBox) const
 {
     const ComputedStyle& style = layoutObject()->styleRef();
 
     FloatPoint3D origin;
     origin.setX(floatValueForLength(style.transformOriginX(), borderBox.width()));
     origin.setY(floatValueForLength(style.transformOriginY(), borderBox.height()));
     origin.setZ(style.transformOriginZ());
@@ skipping 368 matching lines @@
 
 bool CompositedLayerMapping::needsRepaint() const
 {
     return m_owningLayer.needsRepaint();
 }
 
 void CompositedLayerMapping::paintContents(const GraphicsLayer* graphicsLayer, GraphicsContext& context, GraphicsLayerPaintingPhase graphicsLayerPaintingPhase, const IntRect& interestRect) const
 {
     // https://code.google.com/p/chromium/issues/detail?id=343772
     DisableCompositingQueryAsserts disabler;
+
+    int64_t previousId = setCurrentScreenId(reinterpret_cast<int64_t>(layoutObject()->frame()->page()));
+
+    // fprintf(stderr, "CompositedLayerMapping::paintContents begins page %ld\n", (long int) currentScreenId());
+    // fflush(stderr);
+
 #if ENABLE(ASSERT)
     // FIXME: once the state machine is ready, this can be removed and we can refer to that instead.
     if (Page* page = layoutObject()->frame()->page())
         page->setIsPainting(true);
 #endif
 
     TRACE_EVENT1("devtools.timeline", "Paint", "data", InspectorPaintEvent::data(m_owningLayer.layoutObject(), LayoutRect(interestRect), graphicsLayer));
 
     PaintLayerFlags paintLayerFlags = 0;
     if (graphicsLayerPaintingPhase & GraphicsLayerPaintBackground)
@@ skipping 35 matching lines @@
     } else if (graphicsLayer == layerForHorizontalScrollbar()) {
         paintScrollbar(m_owningLayer.scrollableArea()->horizontalScrollbar(), context, interestRect);
     } else if (graphicsLayer == layerForVerticalScrollbar()) {
         paintScrollbar(m_owningLayer.scrollableArea()->verticalScrollbar(), context, interestRect);
     } else if (graphicsLayer == layerForScrollCorner()) {
         IntPoint scrollCornerAndResizerLocation = m_owningLayer.scrollableArea()->scrollCornerAndResizerRect().location();
         CullRect cullRect(enclosingIntRect(interestRect));
         ScrollableAreaPainter(*m_owningLayer.scrollableArea()).paintScrollCorner(&context, -scrollCornerAndResizerLocation, cullRect);
         ScrollableAreaPainter(*m_owningLayer.scrollableArea()).paintResizer(&context, -scrollCornerAndResizerLocation, cullRect);
     }
+
     InspectorInstrumentation::didPaint(m_owningLayer.layoutObject(), graphicsLayer, &context, LayoutRect(interestRect));
+
 #if ENABLE(ASSERT)
     if (Page* page = layoutObject()->frame()->page())
         page->setIsPainting(false);
 #endif
+
+    // fprintf(stderr, "CompositedLayerMapping::paintContents ends page %ld\n", (long int) currentScreenId());
+    // fflush(stderr);
+
+    setCurrentScreenId(previousId);
 }
 
 bool CompositedLayerMapping::isTrackingPaintInvalidations() const
 {
     GraphicsLayerClient* client = compositor();
     return client ? client->isTrackingPaintInvalidations() : false;
 }
 
 #if ENABLE(ASSERT)
 void CompositedLayerMapping::verifyNotPainting()
@@ skipping 167 matching lines @@
     } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) {
         name = "Scrolling Block Selection Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink