third_party/WebKit/Source/web/tests/sim/SimCompositor.cpp

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "config.h"
   6 #include "web/tests/sim/SimCompositor.h"
   7
   8 #include "core/frame/FrameView.h"
   9 #include "core/layout/LayoutView.h"
  10 #include "core/layout/compositing/CompositedDeprecatedPaintLayerMapping.h"
  11 #include "core/paint/DeprecatedPaintLayer.h"
  12 #include "platform/graphics/ContentLayerDelegate.h"
  13 #include "public/platform/WebRect.h"
  14 #include "web/WebLocalFrameImpl.h"
  15 #include "web/WebViewImpl.h"
  16 #include "web/tests/sim/SimDisplayItemList.h"
  17 #include "web/tests/sim/SimLayerTreeView.h"
  18 #include "wtf/CurrentTime.h"
  19
  20 namespace blink {
  21
  22 static void paintLayers(DeprecatedPaintLayer& layer, SimDisplayItemList& displayList)
  23 {
  24     if (layer.compositingState() == PaintsIntoOwnBacking) {
  25         CompositedDeprecatedPaintLayerMapping* mapping = layer.compositedDeprecatedPaintLayerMapping();
  26         GraphicsLayer* graphicsLayer = mapping->mainGraphicsLayer();
  27         if (graphicsLayer->hasTrackedPaintInvalidations()) {
  28             ContentLayerDelegate* delegate = graphicsLayer->contentLayerDelegateForTesting();
  29             delegate->paintContents(&displayList, WebRect(0, 0, layer.size().width(), layer.size().height()));
  30             graphicsLayer->resetTrackedPaintInvalidations();
  31         }
  32     }
  33     for (DeprecatedPaintLayer* child = layer.firstChild(); child; child = child->nextSibling())
  34         paintLayers(*child, displayList);
  35 }
  36
  37 static void paintFrames(LocalFrame& root, SimDisplayItemList& displayList)
  38 {
  39     for (Frame* frame = &root; frame; frame = frame->tree().traverseNext(&root)) {
  40         if (!frame->isLocalFrame())
  41             continue;
  42         DeprecatedPaintLayer* layer = toLocalFrame(frame)->view()->layoutView()->layer();
  43         paintLayers(*layer, displayList);
  44     }
  45 }
  46
  47 SimCompositor::SimCompositor(SimLayerTreeView& layerTreeView)
  48     : m_layerTreeView(&layerTreeView)
  49     , m_webViewImpl(0)
  50     , m_lastFrameTimeMonotonic(0)
  51 {
  52     FrameView::setInitialTracksPaintInvalidationsForTesting(true);
  53     // Disable the debug red fill so the output display list doesn't differ in
  54     // size in Release vs Debug builds.
  55     GraphicsLayer::setDrawDebugRedFillForTesting(false);
  56 }
  57
  58 SimCompositor::~SimCompositor()
  59 {
  60     FrameView::setInitialTracksPaintInvalidationsForTesting(false);
  61     GraphicsLayer::setDrawDebugRedFillForTesting(true);
  62 }
  63
  64 void SimCompositor::setWebViewImpl(WebViewImpl& webViewImpl)
  65 {
  66     m_webViewImpl = &webViewImpl;
  67 }
  68
  69 SimDisplayItemList SimCompositor::beginFrame()
  70 {
  71     ASSERT(m_webViewImpl);
  72     ASSERT(!m_layerTreeView->deferCommits());
  73     ASSERT(m_layerTreeView->needsAnimate());
  74
  75     // Always advance the time as if the compositor was running at 60fps.
  76     m_lastFrameTimeMonotonic = monotonicallyIncreasingTime() + 0.016;
  77
  78     WebBeginFrameArgs args(m_lastFrameTimeMonotonic, 0, 0);
  79     m_webViewImpl->beginFrame(args);
  80     m_webViewImpl->layout();
  81
  82     LocalFrame* root = m_webViewImpl->mainFrameImpl()->frame();
  83
  84     SimDisplayItemList displayList;
  85     paintFrames(*root, displayList);
  86
  87     m_layerTreeView->clearNeedsAnimate();
  88
  89     return displayList;
  90 }
  91
  92 } // namespace blink