Generate scroll/clip display item hierarchy for SPv2

Source/core/paint/DisplayItemListPaintTest.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 "config.h"
 #include "core/paint/DisplayItemListPaintTest.h"
 
 #include "core/layout/LayoutText.h"
 #include "core/layout/line/InlineTextBox.h"
 #include "core/page/FocusController.h"
@@ skipping 138 matching lines @@
     EXPECT_DISPLAY_LIST(rootDisplayItemList().displayItems(), 7,
         TestDisplayItem(rootLayer, DisplayItem::BeginSubsequence),
         TestDisplayItem(layoutView(), DisplayItem::BoxDecorationBackground),
         TestDisplayItem(htmlLayer, DisplayItem::BeginSubsequence),
         TestDisplayItem(newFirstTextBox, DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)),
         TestDisplayItem(secondTextBox, DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)),
         TestDisplayItem(htmlLayer, DisplayItem::EndSubsequence),
         TestDisplayItem(rootLayer, DisplayItem::EndSubsequence));
 }
 
+TEST_F(DisplayItemListPaintTestForSlimmingPaintV2, OverflowClipHierarchy)

[Xianzhu, 2015/09/15 23:40:13]

Can this be moved into DeprecatedPaintLayerPainterTest.cpp?

[trchen, 2015/09/17 01:56:04]

Acknowledged.

+{
+    setBodyInnerHTML(
+        "<div id='scroller1' style='overflow: hidden; width: 100px; height: 100px;'>"
+        "  <div id='scroller2' style='overflow: hidden; width: 200px; height: 200px;'>"
+        "    normal flow"
+        "    <div id='positioned' style='position:relative; width: 300px; height: 300px; border: 1px dotted black;'></div>"
+        "  </div>"
+        "</div>");
+
+    LayoutView& layoutView = *document().layoutView();
+    DeprecatedPaintLayer& rootLayer = *layoutView.layer();
+    LayoutObject& html = *document().documentElement()->layoutObject();
+    DeprecatedPaintLayer& htmlLayer = *static_cast<LayoutBoxModelObject&>(html).layer();
+    LayoutObject& scroller1 = *document().getElementById("scroller1")->layoutObject();
+    DeprecatedPaintLayer& scroller1Layer = *static_cast<LayoutBoxModelObject&>(scroller1).layer();
+    LayoutObject& scroller2 = *document().getElementById("scroller2")->layoutObject();
+    DeprecatedPaintLayer& scroller2Layer = *static_cast<LayoutBoxModelObject&>(scroller2).layer();
+    InlineTextBox& normalFlow = *static_cast<LayoutText*>(scroller2.slowFirstChild()->slowFirstChild())->firstTextBox();
+    LayoutObject& positioned = *document().getElementById("positioned")->layoutObject();
+    DeprecatedPaintLayer& positionedLayer = *static_cast<LayoutBoxModelObject&>(positioned).layer();
+
+    static_cast<LayoutBox&>(scroller1).scrollToOffset(DoubleSize(12, 34));
+    static_cast<LayoutBox&>(scroller2).scrollToOffset(DoubleSize(56, 78));
+    document().view()->updateAllLifecyclePhases();
+
+    EXPECT_DISPLAY_LIST(rootDisplayItemList().displayItems(), 33,
+        TestDisplayItem(rootLayer, DisplayItem::BeginSubsequence),
+        TestDisplayItem(layoutView, DisplayItem::BoxDecorationBackground),
+        TestDisplayItem(htmlLayer, DisplayItem::BeginSubsequence),
+
+            TestDisplayItem(scroller1, DisplayItem::paintPhaseToClipBoxType(PaintPhaseForeground)),
+                TestDisplayItem(scroller1, DisplayItem::paintPhaseToScrollType(PaintPhaseForeground)),
+                    TestDisplayItem(scroller2, DisplayItem::paintPhaseToClipBoxType(PaintPhaseForeground)),
+                        TestDisplayItem(scroller2, DisplayItem::paintPhaseToScrollType(PaintPhaseForeground)),
+                            TestDisplayItem(normalFlow, DisplayItem::paintPhaseToDrawingType(PaintPhaseForeground)),
+                        TestDisplayItem(scroller2, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseForeground))),
+                    TestDisplayItem(scroller2, DisplayItem::clipTypeToEndClipType(DisplayItem::paintPhaseToClipBoxType(PaintPhaseForeground))),
+                TestDisplayItem(scroller1, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseForeground))),
+            TestDisplayItem(scroller1, DisplayItem::clipTypeToEndClipType(DisplayItem::paintPhaseToClipBoxType(PaintPhaseForeground))),
+
+            TestDisplayItem(scroller1Layer, DisplayItem::BeginSubsequence),
+                TestDisplayItem(scroller1, DisplayItem::ClipDescendantStackingContext),
+                    TestDisplayItem(scroller1, DisplayItem::paintPhaseToScrollType(PaintPhaseBlockBackground)),
+                        TestDisplayItem(scroller2Layer, DisplayItem::BeginSubsequence),
+                        TestDisplayItem(scroller2Layer, DisplayItem::EndSubsequence),
+                    TestDisplayItem(scroller1, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseBlockBackground))),
+                TestDisplayItem(scroller1, DisplayItem::clipTypeToEndClipType(DisplayItem::ClipDescendantStackingContext)),
+            TestDisplayItem(scroller1Layer, DisplayItem::EndSubsequence),
+
+            TestDisplayItem(scroller1, DisplayItem::ClipDescendantStackingContext),
+                TestDisplayItem(scroller1, DisplayItem::paintPhaseToScrollType(PaintPhaseBlockBackground)),
+                    TestDisplayItem(scroller2, DisplayItem::ClipDescendantStackingContext),
+                        TestDisplayItem(scroller2, DisplayItem::paintPhaseToScrollType(PaintPhaseBlockBackground)),
+                            TestDisplayItem(positionedLayer, DisplayItem::BeginSubsequence),
+                                TestDisplayItem(positioned, DisplayItem::BoxDecorationBackground),
+                            TestDisplayItem(positionedLayer, DisplayItem::EndSubsequence),
+                        TestDisplayItem(scroller2, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseBlockBackground))),
+                    TestDisplayItem(scroller2, DisplayItem::clipTypeToEndClipType(DisplayItem::ClipDescendantStackingContext)),
+                TestDisplayItem(scroller1, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseBlockBackground))),
+            TestDisplayItem(scroller1, DisplayItem::clipTypeToEndClipType(DisplayItem::ClipDescendantStackingContext)),
+
+        TestDisplayItem(htmlLayer, DisplayItem::EndSubsequence),
+        TestDisplayItem(rootLayer, DisplayItem::EndSubsequence));
+}
+
+TEST_F(DisplayItemListPaintTestForSlimmingPaintV2, OverflowClipHierarchyPhaseInterleave)
+{
+    setBodyInnerHTML(
+        "<div id='scroller1' style='overflow: hidden; width: 100px; height: 100px;'>"
+        "  <div id='scroller2' style='overflow: hidden; width: 200px; height: 200px;'>"
+        "    <div id='multi-phase' style='width: 300px; height: 300px; background: green; outline: 1px dotted black;'></div>"
+        "  </div>"
+        "</div>"
+        "<div id='interleave' style='float: right; width: 300px; height: 300px; background-color: blue;'></div>");
+
+    LayoutView& layoutView = *document().layoutView();
+    DeprecatedPaintLayer& rootLayer = *layoutView.layer();
+    LayoutObject& html = *document().documentElement()->layoutObject();
+    DeprecatedPaintLayer& htmlLayer = *static_cast<LayoutBoxModelObject&>(html).layer();
+    LayoutObject& scroller1 = *document().getElementById("scroller1")->layoutObject();
+    LayoutObject& scroller2 = *document().getElementById("scroller2")->layoutObject();
+    LayoutObject& multiPhase = *document().getElementById("multi-phase")->layoutObject();
+    LayoutObject& interleave = *document().getElementById("interleave")->layoutObject();
+
+    static_cast<LayoutBox&>(scroller1).scrollToOffset(DoubleSize(12, 34));
+    static_cast<LayoutBox&>(scroller2).scrollToOffset(DoubleSize(56, 78));
+    document().view()->updateAllLifecyclePhases();
+
+    EXPECT_DISPLAY_LIST(rootDisplayItemList().displayItems(), 24,
+        TestDisplayItem(rootLayer, DisplayItem::BeginSubsequence),
+        TestDisplayItem(layoutView, DisplayItem::BoxDecorationBackground),
+        TestDisplayItem(htmlLayer, DisplayItem::BeginSubsequence),
+
+            TestDisplayItem(scroller1, DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildBlockBackgrounds)),
+                TestDisplayItem(scroller1, DisplayItem::paintPhaseToScrollType(PaintPhaseChildBlockBackgrounds)),
+                    TestDisplayItem(scroller2, DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildBlockBackgrounds)),
+                        TestDisplayItem(scroller2, DisplayItem::paintPhaseToScrollType(PaintPhaseChildBlockBackgrounds)),
+                            TestDisplayItem(multiPhase, DisplayItem::BoxDecorationBackground),
+                        TestDisplayItem(scroller2, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseChildBlockBackgrounds))),
+                    TestDisplayItem(scroller2, DisplayItem::clipTypeToEndClipType(DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildBlockBackgrounds))),
+                TestDisplayItem(scroller1, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseChildBlockBackgrounds))),
+            TestDisplayItem(scroller1, DisplayItem::clipTypeToEndClipType(DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildBlockBackgrounds))),
+
+            TestDisplayItem(interleave, DisplayItem::BoxDecorationBackground),
+
+            TestDisplayItem(scroller1, DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildOutlines)),
+                TestDisplayItem(scroller1, DisplayItem::paintPhaseToScrollType(PaintPhaseChildOutlines)),
+                    TestDisplayItem(scroller2, DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildOutlines)),
+                        TestDisplayItem(scroller2, DisplayItem::paintPhaseToScrollType(PaintPhaseChildOutlines)),
+                            TestDisplayItem(multiPhase, DisplayItem::paintPhaseToDrawingType(PaintPhaseSelfOutline)),
+                        TestDisplayItem(scroller2, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseChildOutlines))),
+                    TestDisplayItem(scroller2, DisplayItem::clipTypeToEndClipType(DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildOutlines))),
+                TestDisplayItem(scroller1, DisplayItem::scrollTypeToEndScrollType(DisplayItem::paintPhaseToScrollType(PaintPhaseChildOutlines))),
+            TestDisplayItem(scroller1, DisplayItem::clipTypeToEndClipType(DisplayItem::paintPhaseToClipBoxType(PaintPhaseChildOutlines))),
+
+        TestDisplayItem(htmlLayer, DisplayItem::EndSubsequence),
+        TestDisplayItem(rootLayer, DisplayItem::EndSubsequence));
+}
+
 } // namespace blink