Reland "Let SVGForeignObject's local SVG coordinates mean what it should"

third_party/WebKit/Source/core/layout/svg/LayoutSVGForeignObjectTest.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/layout/LayoutGeometryMap.h"
+#include "core/layout/LayoutTestHelper.h"
+
+namespace blink {
+
+class LayoutSVGForeignObjectTest : public RenderingTest {
+ public:
+  LayoutSVGForeignObjectTest()
+      : RenderingTest(SingleChildLocalFrameClient::create()) {}
+
+  const Node* hitTest(int x, int y) {
+    HitTestResult result(
+        HitTestRequest(HitTestRequest::ReadOnly | HitTestRequest::Active |
+                       HitTestRequest::AllowChildFrameContent),
+        IntPoint(x, y));
+    layoutView().hitTest(result);
+    return result.innerNode();
+  }
+};
+
+TEST_F(LayoutSVGForeignObjectTest, DivInForeignObject) {
+  setBodyInnerHTML(
+      "<style>body { margin: 0 }</style>"
+      "<svg id='svg' style='width: 500px; height: 400px'>"
+      "  <foreignObject id='foreign' x='100' y='100' width='300' height='200'>"
+      "    <div id='div' style='margin: 50px; width: 200px; height: 100px'>"
+      "    </div>"
+      "  </foreignObject>"
+      "</svg>");
+
+  const auto& svg = *document().getElementById("svg");
+  const auto& foreignObject = *getLayoutObjectByElementId("foreign");
+  const auto& div = *getLayoutObjectByElementId("div");
+
+  EXPECT_EQ(FloatRect(100, 100, 300, 200), foreignObject.objectBoundingBox());
+  EXPECT_EQ(AffineTransform(), foreignObject.localSVGTransform());
+  EXPECT_EQ(AffineTransform(), foreignObject.localToSVGParentTransform());
+
+  // mapToVisualRectInAncestorSpace
+  LayoutRect divRect(0, 0, 100, 50);
+  EXPECT_TRUE(div.mapToVisualRectInAncestorSpace(&layoutView(), divRect));
+  EXPECT_EQ(LayoutRect(150, 150, 100, 50), divRect);
+
+  // mapLocalToAncestor
+  TransformState transformState(TransformState::ApplyTransformDirection,
+                                FloatPoint());
+  div.mapLocalToAncestor(&layoutView(), transformState,
+                         TraverseDocumentBoundaries);
+  transformState.flatten();
+  EXPECT_EQ(FloatPoint(150, 150), transformState.lastPlanarPoint());
+
+  // mapAncestorToLocal
+  TransformState transformState1(
+      TransformState::UnapplyInverseTransformDirection, FloatPoint());
+  div.mapAncestorToLocal(&layoutView(), transformState1,
+                         TraverseDocumentBoundaries);
+  transformState1.flatten();
+  EXPECT_EQ(FloatPoint(-150, -150), transformState1.lastPlanarPoint());
+
+  // pushMappingToContainer
+  LayoutGeometryMap rgm(TraverseDocumentBoundaries);
+  rgm.pushMappingsToAncestor(&div, nullptr);
+  EXPECT_EQ(FloatQuad(FloatRect(150, 150, 1, 2)),
+            rgm.mapToAncestor(FloatRect(0, 0, 1, 2), nullptr));
+
+  // Hit testing
+  EXPECT_EQ(svg, hitTest(149, 149));
+  EXPECT_EQ(div.node(), hitTest(150, 150));
+  EXPECT_EQ(div.node(), hitTest(349, 249));
+  EXPECT_EQ(svg, hitTest(350, 250));
+}
+
+TEST_F(LayoutSVGForeignObjectTest, IframeInForeignObject) {
+  setBodyInnerHTML(
+      "<style>body { margin: 0 }</style>"
+      "<svg id='svg' style='width: 500px; height: 450px'>"
+      "  <foreignObject id='foreign' x='100' y='100' width='300' height='250'>"
+      "    <iframe style='border: none; margin: 30px;"
+      "         width: 240px; height: 190px'></iframe>"
+      "  </foreignObject>"
+      "</svg>");
+  setChildFrameHTML(
+      "<style>"
+      "  body { margin: 0 }"
+      "  * { background: white; }"
+      "</style>"
+      "<div id='div' style='margin: 70px; width: 100px; height: 50px'></div>");
+  document().view()->updateAllLifecyclePhases();
+
+  const auto& svg = *document().getElementById("svg");
+  const auto& foreignObject = *getLayoutObjectByElementId("foreign");
+  const auto& div = *childDocument().getElementById("div")->layoutObject();
+
+  EXPECT_EQ(FloatRect(100, 100, 300, 250), foreignObject.objectBoundingBox());
+  EXPECT_EQ(AffineTransform(), foreignObject.localSVGTransform());
+  EXPECT_EQ(AffineTransform(), foreignObject.localToSVGParentTransform());
+
+  // mapToVisualRectInAncestorSpace
+  LayoutRect divRect(0, 0, 100, 50);
+  EXPECT_TRUE(div.mapToVisualRectInAncestorSpace(&layoutView(), divRect));
+  EXPECT_EQ(LayoutRect(200, 200, 100, 50), divRect);
+
+  // mapLocalToAncestor
+  TransformState transformState(TransformState::ApplyTransformDirection,
+                                FloatPoint());
+  div.mapLocalToAncestor(&layoutView(), transformState,
+                         TraverseDocumentBoundaries);
+  transformState.flatten();
+  EXPECT_EQ(FloatPoint(200, 200), transformState.lastPlanarPoint());
+
+  // mapAncestorToLocal
+  TransformState transformState1(
+      TransformState::UnapplyInverseTransformDirection, FloatPoint());
+  div.mapAncestorToLocal(&layoutView(), transformState1,
+                         TraverseDocumentBoundaries);
+  transformState1.flatten();
+  EXPECT_EQ(FloatPoint(-200, -200), transformState1.lastPlanarPoint());
+
+  // pushMappingToContainer
+  LayoutGeometryMap rgm(TraverseDocumentBoundaries);
+  rgm.pushMappingsToAncestor(&div, nullptr);
+  EXPECT_EQ(FloatQuad(FloatRect(200, 200, 1, 2)),
+            rgm.mapToAncestor(FloatRect(0, 0, 1, 2), nullptr));
+
+  // Hit testing
+  EXPECT_EQ(svg, hitTest(129, 129));
+  EXPECT_EQ(childDocument().documentElement(), hitTest(130, 130));
+  EXPECT_EQ(childDocument().documentElement(), hitTest(199, 199));
+  EXPECT_EQ(div.node(), hitTest(200, 200));
+  EXPECT_EQ(div.node(), hitTest(299, 249));
+  EXPECT_EQ(childDocument().documentElement(), hitTest(300, 250));
+  EXPECT_EQ(childDocument().documentElement(), hitTest(369, 319));
+  EXPECT_EQ(svg, hitTest(370, 320));
+}
+
+}  // namespace blink