Map visual rects of descendants under LayoutSVGHiddenContainer to the temporary root

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

 // Copyright 2017 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 "core/frame/FrameView.h"
 #include "core/layout/LayoutTestHelper.h"
 #include "core/layout/LayoutView.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/RasterInvalidationTracking.h"
@@ skipping 184 matching lines @@
       GetRasterInvalidationTracking()->invalidations;
   ASSERT_EQ(1u, raster_invalidations.size());
   EXPECT_EQ(PaintInvalidationReason::kNone,
             target->FullPaintInvalidationReason());
   EXPECT_EQ(IntRect(0, 4000, 100, 100), raster_invalidations[0].rect);
   EXPECT_EQ(PaintInvalidationReason::kFull, raster_invalidations[0].reason);
   EXPECT_FALSE(target->NeedsPaintOffsetAndVisualRectUpdate());
   GetDocument().View()->SetTracksPaintInvalidations(false);
 };
 
+TEST_P(PaintInvalidationTest, SVGHiddenContainer) {
+  EnableCompositing();
+  SetBodyInnerHTML(
+      "<svg style='position: absolute; top: 100px; left: 100px'>"
+      "  <mask id='mask'>"
+      "    <g transform='scale(2)'>"
+      "      <rect id='mask-rect' x='11' y='22' width='33' height='44'/>"
+      "    </g>"
+      "  </mask>"
+      "  <rect id='real-rect' x='55' y='66' width='7' height='8'"
+      "      mask='url(#mask)'/>"
+      "</svg>");
+
+  // mask_rect's visual rect is in coordinates of the mask.
+  auto* mask_rect = GetLayoutObjectByElementId("mask-rect");
+  EXPECT_EQ(LayoutRect(22, 44, 66, 88), mask_rect->VisualRect());
+
+  // real_rect's visual rect is in coordinates of its paint invalidation
+  // container (the view).
+  auto* real_rect = GetLayoutObjectByElementId("real-rect");
+  EXPECT_EQ(LayoutRect(155, 166, 7, 8), real_rect->VisualRect());
+
+  GetDocument().View()->SetTracksPaintInvalidations(true);
+  ToElement(mask_rect->GetNode())->setAttribute("x", "20");
+  GetDocument().View()->UpdateAllLifecyclePhasesExceptPaint();
+  EXPECT_EQ(LayoutRect(40, 44, 66, 88), mask_rect->VisualRect());
+  EXPECT_EQ(LayoutRect(155, 166, 7, 8), real_rect->VisualRect());
+
+  // Should invalidate raster for real_rect only.
+  const auto& raster_invalidations =
+      GetRasterInvalidationTracking()->invalidations;
+  ASSERT_EQ(1u, raster_invalidations.size());
+  EXPECT_EQ(IntRect(155, 166, 7, 8), raster_invalidations[0].rect);
+  EXPECT_EQ(PaintInvalidationReason::kFull, raster_invalidations[0].reason);
+  EXPECT_EQ(PaintInvalidationReason::kFull,
+            real_rect->GetPaintInvalidationReason());
+
+  // Should still invalidate DisplayItemClient of mask_rect.
+  EXPECT_EQ(PaintInvalidationReason::kFull,
+            mask_rect->GetPaintInvalidationReason());
+  GetDocument().View()->SetTracksPaintInvalidations(false);
+}
+
 }  // namespace
 
 }  // namespace blink