third_party/WebKit/Source/platform/graphics/ContentLayerDelegate.cpp

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1.  Redistributions of source code must retain the above copyright
   8  *     notice, this list of conditions and the following disclaimer.
   9  * 2.  Redistributions in binary form must reproduce the above copyright
  10  *     notice, this list of conditions and the following disclaimer in the
  11  *     documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  17  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #include "config.h"
  26
  27 #include "platform/graphics/ContentLayerDelegate.h"
  28
  29 #include "platform/EventTracer.h"
  30 #include "platform/RuntimeEnabledFeatures.h"
  31 #include "platform/TraceEvent.h"
  32 #include "platform/TracedValue.h"
  33 #include "platform/geometry/IntRect.h"
  34 #include "platform/graphics/GraphicsContext.h"
  35 #include "platform/graphics/paint/DisplayItemList.h"
  36 #include "platform/transforms/AffineTransform.h"
  37 #include "platform/transforms/TransformationMatrix.h"
  38 #include "public/platform/WebDisplayItemList.h"
  39 #include "public/platform/WebFloatRect.h"
  40 #include "public/platform/WebRect.h"
  41 #include "third_party/skia/include/core/SkCanvas.h"
  42 #include "third_party/skia/include/core/SkPicture.h"
  43 #include "third_party/skia/include/core/SkPictureRecorder.h"
  44
  45 namespace blink {
  46
  47 ContentLayerDelegate::ContentLayerDelegate(GraphicsContextPainter* painter)
  48     : m_painter(painter)
  49 {
  50 }
  51
  52 ContentLayerDelegate::~ContentLayerDelegate()
  53 {
  54 }
  55
  56 PassRefPtr<TracedValue> toTracedValue(const WebRect& clip)
  57 {
  58     RefPtr<TracedValue> tracedValue = TracedValue::create();
  59     tracedValue->beginArray("clip_rect");
  60     tracedValue->pushInteger(clip.x);
  61     tracedValue->pushInteger(clip.y);
  62     tracedValue->pushInteger(clip.width);
  63     tracedValue->pushInteger(clip.height);
  64     tracedValue->endArray();
  65     return tracedValue;
  66 }
  67
  68 void ContentLayerDelegate::paintContents(
  69     SkCanvas* canvas, const WebRect& clip,
  70     WebContentLayerClient::PaintingControlSetting paintingControl)
  71 {
  72     TRACE_EVENT1("blink,benchmark", "ContentLayerDelegate::paintContents", "clip_rect", toTracedValue(clip));
  73
  74     // TODO(pdr): Remove this function.
  75     ASSERT_NOT_REACHED();
  76 }
  77
  78 void ContentLayerDelegate::paintContents(
  79     WebDisplayItemList* webDisplayItemList, const WebRect& clip,
  80     WebContentLayerClient::PaintingControlSetting paintingControl)
  81 {
  82     TRACE_EVENT1("blink,benchmark", "ContentLayerDelegate::paintContents", "clip_rect", toTracedValue(clip));
  83
  84     // TODO(pdr): Remove when slimming paint v2 is further along. This is only
  85     // here so the browser is usable during development and does not crash due
  86     // to committing the new display items twice.
  87     if (RuntimeEnabledFeatures::slimmingPaintV2Enabled()) {
  88         m_painter->displayItemList()->appendToWebDisplayItemList(webDisplayItemList);
  89         return;
  90     }
  91
  92     DisplayItemList* displayItemList = m_painter->displayItemList();
  93     ASSERT(displayItemList);
  94     displayItemList->setDisplayItemConstructionIsDisabled(
  95         paintingControl == WebContentLayerClient::DisplayListConstructionDisabled);
  96
  97     // We also disable caching when Painting or Construction are disabled. In both cases we would like
  98     // to compare assuming the full cost of recording, not the cost of re-using cached content.
  99     if (paintingControl != WebContentLayerClient::PaintDefaultBehavior)
 100         displayItemList->invalidateAll();
 101
 102     GraphicsContext::DisabledMode disabledMode = GraphicsContext::NothingDisabled;
 103     if (paintingControl == WebContentLayerClient::DisplayListPaintingDisabled
 104         || paintingControl == WebContentLayerClient::DisplayListConstructionDisabled)
 105         disabledMode = GraphicsContext::FullyDisabled;
 106     GraphicsContext context(displayItemList, disabledMode);
 107
 108     m_painter->paint(context, clip);
 109
 110     displayItemList->commitNewDisplayItemsAndAppendToWebDisplayItemList(webDisplayItemList);
 111 }
 112
 113 size_t ContentLayerDelegate::approximateUnsharedMemoryUsage() const
 114 {
 115     return m_painter->displayItemList()->approximateUnsharedMemoryUsage();
 116 }
 117
 118 } // namespace blink