(WIP) Invalidation during painting (for synchronized painting)

third_party/WebKit/Source/core/paint/BoxPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/BoxPainter.h"
 
 #include "core/HTMLNames.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/layout/ImageQualityController.h"
@@ skipping 20 matching lines @@
 #include "platform/geometry/LayoutRectOutsets.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "platform/graphics/paint/CompositingDisplayItem.h"
 #include "wtf/Optional.h"
 
 namespace blink {
 
 void BoxPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     LayoutPoint adjustedPaintOffset = paintOffset + m_layoutBox.location();
+
     // Default implementation. Just pass paint through to the children.
     PaintInfo childInfo(paintInfo);
     for (LayoutObject* child = m_layoutBox.slowFirstChild(); child; child = child->nextSibling())
         child->paint(childInfo, adjustedPaintOffset);
 }
 
 void BoxPainter::paintBoxDecorationBackground(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     LayoutRect paintRect = m_layoutBox.borderBoxRect();
     paintRect.moveBy(paintOffset);
@@ skipping 20 matching lines @@
 void BoxPainter::paintBoxDecorationBackgroundWithRect(const PaintInfo& paintInfo, const LayoutPoint& paintOffset, const LayoutRect& paintRect)
 {
     const ComputedStyle& style = m_layoutBox.styleRef();
 
     // FIXME: For now we don't have notification on media buffered range change from media player
     // and miss paint invalidation on buffered range change. crbug.com/484288.
     Optional<DisplayItemCacheSkipper> cacheSkipper;
     if (style.appearance() == MediaSliderPart)
         cacheSkipper.emplace(paintInfo.context);
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutBox, DisplayItem::BoxDecorationBackground, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutBox, DisplayItem::BoxDecorationBackground))
         return;
 
-    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutBox, DisplayItem::BoxDecorationBackground, boundsForDrawingRecorder(paintOffset), paintOffset);
+    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutBox, DisplayItem::BoxDecorationBackground, boundsForDrawingRecorder(paintOffset));
 
     BoxDecorationData boxDecorationData(m_layoutBox);
 
     // FIXME: Should eventually give the theme control over whether the box shadow should paint, since controls could have
     // custom shadows of their own.
     if (!m_layoutBox.boxShadowShouldBeAppliedToBackground(boxDecorationData.bleedAvoidance))
         paintBoxShadow(paintInfo, paintRect, style, Normal);
 
     GraphicsContextStateSaver stateSaver(paintInfo.context, false);
     if (bleedAvoidanceIsClipping(boxDecorationData.bleedAvoidance)) {
@@ skipping 386 matching lines @@
         context.endLayer();
         context.endLayer();
     }
 }
 
 void BoxPainter::paintMask(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     if (m_layoutBox.style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask)
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutBox, paintInfo.phase, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutBox, paintInfo.phase))
         return;
 
     LayoutRect visualOverflowRect(m_layoutBox.visualOverflowRect());
     visualOverflowRect.moveBy(paintOffset);
 
-    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutBox, paintInfo.phase, visualOverflowRect, paintOffset);
+    LayoutObjectDrawingRecorder recorder(paintInfo.context, m_layoutBox, paintInfo.phase, visualOverflowRect);
     LayoutRect paintRect = LayoutRect(paintOffset, m_layoutBox.size());
     paintMaskImages(paintInfo, paintRect);
 }
 
 void BoxPainter::paintMaskImages(const PaintInfo& paintInfo, const LayoutRect& paintRect)
 {
     // Figure out if we need to push a transparency layer to render our mask.
     bool pushTransparencyLayer = false;
     bool compositedMask = m_layoutBox.hasLayer() && m_layoutBox.layer()->hasCompositedMask();
     bool flattenCompositingLayers = paintInfo.globalPaintFlags() & GlobalPaintFlattenCompositingLayers;
@@ skipping 26 matching lines @@
 void BoxPainter::paintClippingMask(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     ASSERT(paintInfo.phase == PaintPhaseClippingMask);
 
     if (m_layoutBox.style()->visibility() != VISIBLE)
         return;
 
     if (!m_layoutBox.layer() || m_layoutBox.layer()->compositingState() != PaintsIntoOwnBacking)
         return;
 
-    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutBox, paintInfo.phase, paintOffset))
+    if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(paintInfo.context, m_layoutBox, paintInfo.phase))
         return;
 
     IntRect paintRect = pixelSnappedIntRect(LayoutRect(paintOffset, m_layoutBox.size()));
-    LayoutObjectDrawingRecorder drawingRecorder(paintInfo.context, m_layoutBox, paintInfo.phase, paintRect, paintOffset);
+    LayoutObjectDrawingRecorder drawingRecorder(paintInfo.context, m_layoutBox, paintInfo.phase, paintRect);
     paintInfo.context.fillRect(paintRect, Color::black);
 }
 
 InterpolationQuality BoxPainter::chooseInterpolationQuality(const LayoutObject& obj, Image* image, const void* layer, const LayoutSize& size)
 {
     return ImageQualityController::imageQualityController()->chooseInterpolationQuality(obj, image, layer, size);
 }
 
 bool BoxPainter::paintNinePieceImage(const LayoutBoxModelObject& obj, GraphicsContext& graphicsContext, const LayoutRect& rect, const ComputedStyle& style, const NinePieceImage& ninePieceImage, SkXfermode::Mode op)
 {
@@ skipping 131 matching lines @@
     }
 }
 
 bool BoxPainter::shouldForceWhiteBackgroundForPrintEconomy(const ComputedStyle& style, const Document& document)
 {
     return document.printing() && style.printColorAdjust() == PrintColorAdjustEconomy
         && (!document.settings() || !document.settings()->shouldPrintBackgrounds());
 }
 
 } // namespace blink