Repaint on interest rect change

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

 // Copyright 2015 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/layout/compositing/CompositedLayerMapping.h"
 #include "core/paint/PaintControllerPaintTest.h"
 #include "platform/graphics/GraphicsContext.h"
 
@@ skipping 119 matching lines @@
 
     bool rootLayerScrolls = document().frame()->settings()->rootLayerScrolls();
     PaintLayer& rootLayer = *layoutView().layer();
     PaintLayer& htmlLayer = *toLayoutBoxModelObject(document().documentElement()->layoutObject())->layer();
     LayoutObject& container1 = *document().getElementById("container1")->layoutObject();
     PaintLayer& container1Layer = *toLayoutBoxModelObject(container1).layer();
     LayoutObject& content1 = *document().getElementById("content1")->layoutObject();
     LayoutObject& container2 = *document().getElementById("container2")->layoutObject();
     PaintLayer& container2Layer = *toLayoutBoxModelObject(container2).layer();
     LayoutObject& content2a = *document().getElementById("content2a")->layoutObject();
+    LayoutObject& content2b = *document().getElementById("content2b")->layoutObject();
     LayoutObject& container3 = *document().getElementById("container3")->layoutObject();
     PaintLayer& container3Layer = *toLayoutBoxModelObject(container3).layer();
     LayoutObject& content3 = *document().getElementById("content3")->layoutObject();
 
-    LayoutRect interestRect(0, 0, 400, 300);
+    IntRect interestRect(0, 0, 400, 300);
     document().view()->updateAllLifecyclePhases(&interestRect);
 
     // Container1 is fully in the interest rect;
     // Container2 is partly (including its stacking chidren) in the interest rect;
     // Content2b is out of the interest rect and output nothing;
     // Container3 is partly in the interest rect.
     if (rootLayerScrolls) {
         EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 15,
             TestDisplayItem(layoutView(), backgroundType),
             TestDisplayItem(rootLayer, subsequenceType),
@@ skipping 24 matching lines @@
             TestDisplayItem(content2a, backgroundType),
             TestDisplayItem(container2Layer, endSubsequenceType),
             TestDisplayItem(container3, backgroundType),
             TestDisplayItem(container3Layer, subsequenceType),
             TestDisplayItem(content3, backgroundType),
             TestDisplayItem(container3Layer, endSubsequenceType),
             TestDisplayItem(htmlLayer, endSubsequenceType),
             TestDisplayItem(rootLayer, endSubsequenceType));
     }
 
-    LayoutRect newInterestRect(0, 100, 300, 300);
+    IntRect newInterestRect(0, 100, 300, 1000);
     document().view()->updateAllLifecyclePhases(&newInterestRect);
 
     // Container1 becomes partly in the interest rect, but uses cached subsequence
     // because it was fully painted before;
     // Container2's intersection with the interest rect changes;
     // Content2b is out of the interest rect and outputs nothing;
     // Container3 becomes out of the interest rect and outputs nothing.
     if (rootLayerScrolls) {
-        EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 11,
+        EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 12,
             TestDisplayItem(layoutView(), backgroundType),
             TestDisplayItem(rootLayer, subsequenceType),
             TestDisplayItem(container1, backgroundType),
             TestDisplayItem(container1Layer, subsequenceType),
             TestDisplayItem(content1, backgroundType),
             TestDisplayItem(container1Layer, endSubsequenceType),
             TestDisplayItem(container2, backgroundType),
             TestDisplayItem(container2Layer, subsequenceType),
             TestDisplayItem(content2a, backgroundType),
+            TestDisplayItem(content2b, backgroundType),
             TestDisplayItem(container2Layer, endSubsequenceType),
             TestDisplayItem(rootLayer, endSubsequenceType));
     } else {
-        EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 13,
+        EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 14,
             TestDisplayItem(layoutView(), backgroundType),
             TestDisplayItem(rootLayer, subsequenceType),
             TestDisplayItem(htmlLayer, subsequenceType),
             TestDisplayItem(container1, backgroundType),
             TestDisplayItem(container1Layer, subsequenceType),
             TestDisplayItem(content1, backgroundType),
             TestDisplayItem(container1Layer, endSubsequenceType),
             TestDisplayItem(container2, backgroundType),
             TestDisplayItem(container2Layer, subsequenceType),
             TestDisplayItem(content2a, backgroundType),
+            TestDisplayItem(content2b, backgroundType),
             TestDisplayItem(container2Layer, endSubsequenceType),
             TestDisplayItem(htmlLayer, endSubsequenceType),
             TestDisplayItem(rootLayer, endSubsequenceType));
     }
 }
 
 TEST_F(PaintLayerPainterTestForSlimmingPaintV2, CachedSubsequence)
 {
     setBodyInnerHTML(
         "<div id='container1' style='position: relative; z-index: 1; width: 200px; height: 200px; background-color: blue'>"
@@ skipping 56 matching lines @@
         TestDisplayItem(container1Layer, endSubsequenceType),
         TestDisplayItem(container2, backgroundType),
         TestDisplayItem(container2Layer, subsequenceType),
         TestDisplayItem(content2, backgroundType),
         TestDisplayItem(container2Layer, endSubsequenceType),
         TestDisplayItem(htmlLayer, endSubsequenceType),
         TestDisplayItem(rootLayer, endSubsequenceType));
 
     // Repeated painting should just generate a CachedDisplayItemList item.
     updateLifecyclePhasesToPaintClean();
+
     EXPECT_DISPLAY_LIST(rootPaintController().newDisplayItemList(), 1,
         TestDisplayItem(*rootLayer.compositedLayerMapping(), DisplayItem::CachedDisplayItemList));
 
     compositeForSlimmingPaintV2();
 
     EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 13,
         TestDisplayItem(layoutView(), backgroundType),
         TestDisplayItem(rootLayer, subsequenceType),
         TestDisplayItem(htmlLayer, subsequenceType),
         TestDisplayItem(container1, backgroundType),
@@ skipping 24 matching lines @@
     rootPaintController().invalidateAll();
 
     PaintLayer& rootLayer = *layoutView().layer();
     PaintLayer& htmlLayer = *toLayoutBoxModelObject(document().documentElement()->layoutObject())->layer();
     LayoutObject& container1 = *document().getElementById("container1")->layoutObject();
     PaintLayer& container1Layer = *toLayoutBoxModelObject(container1).layer();
     LayoutObject& content1 = *document().getElementById("content1")->layoutObject();
     LayoutObject& container2 = *document().getElementById("container2")->layoutObject();
     PaintLayer& container2Layer = *toLayoutBoxModelObject(container2).layer();
     LayoutObject& content2a = *document().getElementById("content2a")->layoutObject();
+    LayoutObject& content2b = *document().getElementById("content2b")->layoutObject();
     LayoutObject& container3 = *document().getElementById("container3")->layoutObject();
     PaintLayer& container3Layer = *toLayoutBoxModelObject(container3).layer();
     LayoutObject& content3 = *document().getElementById("content3")->layoutObject();
 
-    LayoutRect interestRect(0, 0, 400, 300);
+    IntRect interestRect(0, 0, 400, 300);
     document().view()->updateAllLifecyclePhases(&interestRect);
 
     // Container1 is fully in the interest rect;
     // Container2 is partly (including its stacking chidren) in the interest rect;
     // Content2b is out of the interest rect and output nothing;
     // Container3 is partly in the interest rect.
     EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 17,
         TestDisplayItem(layoutView(), backgroundType),
         TestDisplayItem(rootLayer, subsequenceType),
         TestDisplayItem(htmlLayer, subsequenceType),
         TestDisplayItem(container1, backgroundType),
         TestDisplayItem(container1Layer, subsequenceType),
         TestDisplayItem(content1, backgroundType),
         TestDisplayItem(container1Layer, endSubsequenceType),
         TestDisplayItem(container2, backgroundType),
         TestDisplayItem(container2Layer, subsequenceType),
         TestDisplayItem(content2a, backgroundType),
         TestDisplayItem(container2Layer, endSubsequenceType),
         TestDisplayItem(container3, backgroundType),
         TestDisplayItem(container3Layer, subsequenceType),
         TestDisplayItem(content3, backgroundType),
         TestDisplayItem(container3Layer, endSubsequenceType),
         TestDisplayItem(htmlLayer, endSubsequenceType),
         TestDisplayItem(rootLayer, endSubsequenceType));
 
     // Container1 becomes partly in the interest rect, but uses cached subsequence
     // because it was fully painted before;
     // Container2's intersection with the interest rect changes;
-    // Content2b is out of the interest rect and outputs nothing;
+    // Content2b is in the interest rect;
     // Container3 becomes out of the interest rect and outputs nothing.
-    LayoutRect newInterestRect(0, 100, 300, 300);
+    IntRect newInterestRect(0, 100, 300, 1000);
     updateLifecyclePhasesToPaintClean(&newInterestRect);
 
-    EXPECT_DISPLAY_LIST(rootPaintController().newDisplayItemList(), 11,
+    EXPECT_DISPLAY_LIST(rootPaintController().newDisplayItemList(), 12,
         TestDisplayItem(layoutView(), cachedBackgroundType),
         TestDisplayItem(rootLayer, subsequenceType),
         TestDisplayItem(htmlLayer, subsequenceType),
         TestDisplayItem(container1, cachedBackgroundType),
         TestDisplayItem(container1Layer, cachedSubsequenceType),
         TestDisplayItem(container2, cachedBackgroundType),
         TestDisplayItem(container2Layer, subsequenceType),
         TestDisplayItem(content2a, cachedBackgroundType),
+        TestDisplayItem(content2b, backgroundType),
         TestDisplayItem(container2Layer, endSubsequenceType),
         TestDisplayItem(htmlLayer, endSubsequenceType),
         TestDisplayItem(rootLayer, endSubsequenceType));
 
     compositeForSlimmingPaintV2();
 
-    EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 13,
+    EXPECT_DISPLAY_LIST(rootPaintController().displayItemList(), 14,
         TestDisplayItem(layoutView(), backgroundType),
         TestDisplayItem(rootLayer, subsequenceType),
         TestDisplayItem(htmlLayer, subsequenceType),
         TestDisplayItem(container1, backgroundType),
         TestDisplayItem(container1Layer, subsequenceType),
         TestDisplayItem(content1, backgroundType),
         TestDisplayItem(container1Layer, endSubsequenceType),
         TestDisplayItem(container2, backgroundType),
         TestDisplayItem(container2Layer, subsequenceType),
         TestDisplayItem(content2a, backgroundType),
+        TestDisplayItem(content2b, backgroundType),
         TestDisplayItem(container2Layer, endSubsequenceType),
         TestDisplayItem(htmlLayer, endSubsequenceType),
         TestDisplayItem(rootLayer, endSubsequenceType));
 }
 
 } // namespace blink