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

   1 // Copyright 2014 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 "core/paint/LayerClipRecorder.h"
   7
   8 #include "core/layout/LayoutTestHelper.h"
   9 #include "core/layout/LayoutView.h"
  10 #include "core/layout/compositing/DeprecatedPaintLayerCompositor.h"
  11 #include "core/paint/DeprecatedPaintLayer.h"
  12 #include "core/paint/LayoutObjectDrawingRecorder.h"
  13 #include "platform/graphics/GraphicsContext.h"
  14 #include "platform/graphics/GraphicsLayer.h"
  15 #include "platform/graphics/paint/DisplayItemList.h"
  16 #include <gtest/gtest.h>
  17
  18 namespace blink {
  19 namespace {
  20
  21 class LayerClipRecorderTest : public RenderingTest {
  22 public:
  23     LayerClipRecorderTest()
  24         : m_layoutView(nullptr) { }
  25
  26 protected:
  27     LayoutView& layoutView() { return *m_layoutView; }
  28     DisplayItemList& rootDisplayItemList() { return *layoutView().layer()->graphicsLayerBacking()->displayItemList(); }
  29
  30 private:
  31     void SetUp() override
  32     {
  33         RenderingTest::SetUp();
  34         enableCompositing();
  35
  36         m_layoutView = document().view()->layoutView();
  37         ASSERT_TRUE(m_layoutView);
  38     }
  39
  40     LayoutView* m_layoutView;
  41 };
  42
  43 void drawEmptyClip(GraphicsContext& context, LayoutView& layoutView, PaintPhase phase)
  44 {
  45     LayoutRect rect(1, 1, 9, 9);
  46     ClipRect clipRect(rect);
  47     LayerClipRecorder LayerClipRecorder(context, *layoutView.compositor()->rootLayer()->layoutObject(), DisplayItem::ClipLayerForeground, clipRect, 0, LayoutPoint(), PaintLayerFlags());
  48 }
  49
  50 void drawRectInClip(GraphicsContext& context, LayoutView& layoutView, PaintPhase phase, const LayoutRect& bound)
  51 {
  52     IntRect rect(1, 1, 9, 9);
  53     ClipRect clipRect((LayoutRect(rect)));
  54     LayerClipRecorder LayerClipRecorder(context, *layoutView.compositor()->rootLayer()->layoutObject(), DisplayItem::ClipLayerForeground, clipRect, 0, LayoutPoint(), PaintLayerFlags());
  55     if (!LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(context, layoutView, phase, LayoutPoint())) {
  56         LayoutObjectDrawingRecorder drawingRecorder(context, layoutView, phase, bound, LayoutPoint());
  57         context.drawRect(rect);
  58     }
  59 }
  60
  61 TEST_F(LayerClipRecorderTest, Single)
  62 {
  63     GraphicsContext context(&rootDisplayItemList());
  64     LayoutRect bound = layoutView().viewRect();
  65     EXPECT_EQ((size_t)0, rootDisplayItemList().displayItems().size());
  66
  67     drawRectInClip(context, layoutView(), PaintPhaseForeground, bound);
  68     rootDisplayItemList().commitNewDisplayItems();
  69     EXPECT_EQ((size_t)3, rootDisplayItemList().displayItems().size());
  70     EXPECT_TRUE(DisplayItem::isClipType(rootDisplayItemList().displayItems()[0].type()));
  71     EXPECT_TRUE(DisplayItem::isDrawingType(rootDisplayItemList().displayItems()[1].type()));
  72     EXPECT_TRUE(DisplayItem::isEndClipType(rootDisplayItemList().displayItems()[2].type()));
  73 }
  74
  75 TEST_F(LayerClipRecorderTest, Empty)
  76 {
  77     GraphicsContext context(&rootDisplayItemList());
  78     EXPECT_EQ((size_t)0, rootDisplayItemList().displayItems().size());
  79
  80     drawEmptyClip(context, layoutView(), PaintPhaseForeground);
  81     rootDisplayItemList().commitNewDisplayItems();
  82     EXPECT_EQ((size_t)0, rootDisplayItemList().displayItems().size());
  83 }
  84
  85 }
  86 }