1 files changed, 181 insertions, 0 deletions
diff --git a/chromium/content/renderer/compositor_bindings/web_layer_impl_fixed_bounds_unittest.cc b/chromium/content/renderer/compositor_bindings/web_layer_impl_fixed_bounds_unittest.cc
new file mode 100644
index 00000000000..1ab52f0ddc0
--- /dev/null
+++ b/chromium/content/renderer/compositor_bindings/web_layer_impl_fixed_bounds_unittest.cc
@@ -0,0 +1,181 @@
+// 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 <vector>
+#include "cc/layers/picture_image_layer.h"
+#include "cc/test/fake_layer_tree_host.h"
+#include "cc/test/geometry_test_utils.h"
+#include "cc/trees/layer_tree_host_common.h"
+#include "content/renderer/compositor_bindings/web_layer_impl_fixed_bounds.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/platform/WebFloatPoint.h"
+#include "third_party/WebKit/public/platform/WebSize.h"
+#include "third_party/skia/include/utils/SkMatrix44.h"
+#include "ui/gfx/point3_f.h"
+
+using blink::WebFloatPoint;
+using blink::WebSize;
+
+namespace content {
+namespace {
+
+TEST(WebLayerImplFixedBoundsTest, IdentityBounds) {
+  scoped_ptr<WebLayerImplFixedBounds> layer(new WebLayerImplFixedBounds());
+  layer->setAnchorPoint(WebFloatPoint(0, 0));
+  layer->SetFixedBounds(gfx::Size(100, 100));
+  layer->setBounds(WebSize(100, 100));
+  EXPECT_EQ(WebSize(100, 100), layer->bounds());
+  EXPECT_EQ(gfx::Size(100, 100), layer->layer()->bounds());
+  EXPECT_EQ(gfx::Transform(), layer->layer()->transform());
+}
+
+gfx::Point3F TransformPoint(const gfx::Transform& transform,
+                            const gfx::Point3F& point) {
+  gfx::Point3F result = point;
+  transform.TransformPoint(&result);
+  return result;
+}
+
+void CheckBoundsScaleSimple(WebLayerImplFixedBounds* layer,
+                            const WebSize& bounds,
+                            const gfx::Size& fixed_bounds) {
+  layer->setBounds(bounds);
+  layer->SetFixedBounds(fixed_bounds);
+
+  EXPECT_EQ(bounds, layer->bounds());
+  EXPECT_EQ(fixed_bounds, layer->layer()->bounds());
+  EXPECT_TRUE(layer->transform().isIdentity());
+
+  // An arbitrary point to check the scale and transforms.
+  gfx::Point3F original_point(10, 20, 1);
+  gfx::Point3F scaled_point(
+      original_point.x() * bounds.width / fixed_bounds.width(),
+      original_point.y() * bounds.height / fixed_bounds.height(),
+      original_point.z());
+  // Test if the bounds scale is correctly applied in transform.
+  EXPECT_POINT3F_EQ(
+      scaled_point,
+      TransformPoint(layer->layer()->transform(), original_point));
+}
+
+TEST(WebLayerImplFixedBoundsTest, BoundsScaleSimple) {
+  scoped_ptr<WebLayerImplFixedBounds> layer(new WebLayerImplFixedBounds());
+  layer->setAnchorPoint(WebFloatPoint(0, 0));
+  CheckBoundsScaleSimple(layer.get(), WebSize(100, 200), gfx::Size(150, 250));
+  // Change fixed_bounds.
+  CheckBoundsScaleSimple(layer.get(), WebSize(100, 200), gfx::Size(75, 100));
+  // Change bounds.
+  CheckBoundsScaleSimple(layer.get(), WebSize(300, 100), gfx::Size(75, 100));
+}
+
+void ExpectEqualLayerRectsInTarget(cc::Layer* layer1, cc::Layer* layer2) {
+  gfx::RectF layer1_rect_in_target(layer1->content_bounds());
+  layer1->draw_transform().TransformRect(&layer1_rect_in_target);
+
+  gfx::RectF layer2_rect_in_target(layer2->content_bounds());
+  layer2->draw_transform().TransformRect(&layer2_rect_in_target);
+
+  EXPECT_FLOAT_RECT_EQ(layer1_rect_in_target, layer2_rect_in_target);
+}
+
+void CompareFixedBoundsLayerAndNormalLayer(const WebFloatPoint& anchor_point,
+                                           const gfx::Transform& transform) {
+  const gfx::Size kDeviceViewportSize(800, 600);
+  const float kDeviceScaleFactor = 2.f;
+  const float kPageScaleFactor = 1.5f;
+
+  WebSize bounds(150, 200);
+  WebFloatPoint position(20, 30);
+  gfx::Size fixed_bounds(160, 70);
+
+  scoped_ptr<WebLayerImplFixedBounds> root_layer(new WebLayerImplFixedBounds());
+
+  WebLayerImplFixedBounds* fixed_bounds_layer =
+      new WebLayerImplFixedBounds(cc::PictureImageLayer::Create());
+  fixed_bounds_layer->setBounds(bounds);
+  fixed_bounds_layer->SetFixedBounds(fixed_bounds);
+  fixed_bounds_layer->setAnchorPoint(anchor_point);
+  fixed_bounds_layer->setTransform(transform.matrix());
+  fixed_bounds_layer->setPosition(position);
+  root_layer->addChild(fixed_bounds_layer);
+
+  WebLayerImpl* normal_layer(new WebLayerImpl(cc::PictureImageLayer::Create()));
+
+  normal_layer->setBounds(bounds);
+  normal_layer->setAnchorPoint(anchor_point);
+  normal_layer->setTransform(transform.matrix());
+  normal_layer->setPosition(position);
+  root_layer->addChild(normal_layer);
+
+  scoped_ptr<cc::FakeLayerTreeHost> host = cc::FakeLayerTreeHost::Create();
+  host->SetRootLayer(root_layer->layer());
+
+  {
+    cc::RenderSurfaceLayerList render_surface_layer_list;
+    cc::LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
+        root_layer->layer(), kDeviceViewportSize, &render_surface_layer_list);
+    inputs.device_scale_factor = kDeviceScaleFactor;
+    inputs.page_scale_factor = kPageScaleFactor;
+    inputs.page_scale_application_layer = root_layer->layer(),
+    cc::LayerTreeHostCommon::CalculateDrawProperties(&inputs);
+
+    ExpectEqualLayerRectsInTarget(normal_layer->layer(),
+                                  fixed_bounds_layer->layer());
+  }
+
+  // Change of fixed bounds should not affect the target geometries.
+  fixed_bounds_layer->SetFixedBounds(
+      gfx::Size(fixed_bounds.width() / 2, fixed_bounds.height() * 2));
+
+  {
+    cc::RenderSurfaceLayerList render_surface_layer_list;
+    cc::LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
+        root_layer->layer(), kDeviceViewportSize, &render_surface_layer_list);
+    inputs.device_scale_factor = kDeviceScaleFactor;
+    inputs.page_scale_factor = kPageScaleFactor;
+    inputs.page_scale_application_layer = root_layer->layer(),
+    cc::LayerTreeHostCommon::CalculateDrawProperties(&inputs);
+
+    ExpectEqualLayerRectsInTarget(normal_layer->layer(),
+                                  fixed_bounds_layer->layer());
+  }
+}
+
+// TODO(perkj): CompareToWebLayerImplSimple disabled on LSAN due to crbug/386080
+#if defined(LEAK_SANITIZER)
+#define MAYBE_CompareToWebLayerImplSimple DISABLED_CompareToWebLayerImplSimple
+#else
+#define MAYBE_CompareToWebLayerImplSimple CompareToWebLayerImplSimple
+#endif
+// A black box test that ensures WebLayerImplFixedBounds won't change target
+// geometries. Simple case: identity transforms and zero anchor point.
+TEST(WebLayerImplFixedBoundsTest, MAYBE_CompareToWebLayerImplSimple) {
+  CompareFixedBoundsLayerAndNormalLayer(WebFloatPoint(0, 0), gfx::Transform());
+}
+
+// TODO(perkj): CompareToWebLayerImplComplex disabled on LSAN due to
+// crbug/386080
+#if defined(LEAK_SANITIZER)
+#define MAYBE_CompareToWebLayerImplComplex DISABLED_CompareToWebLayerImplComplex
+#else
+#define MAYBE_CompareToWebLayerImplComplex CompareToWebLayerImplComplex
+#endif
+// A black box test that ensures WebLayerImplFixedBounds won't change target
+// geometries. Complex case: complex transforms and non-zero anchor point.
+TEST(WebLayerImplFixedBoundsTest, MAYBE_CompareToWebLayerImplComplex) {
+  gfx::Transform transform;
+  // These are arbitrary values that should not affect the results.
+  transform.Translate3d(50, 60, 70);
+  transform.Scale3d(2, 3, 4);
+  transform.RotateAbout(gfx::Vector3dF(33, 44, 55), 99);
+
+  CompareFixedBoundsLayerAndNormalLayer(WebFloatPoint(0, 0), transform);
+
+  // With non-zero anchor point, WebLayerImplFixedBounds will fall back to
+  // WebLayerImpl.
+  CompareFixedBoundsLayerAndNormalLayer(WebFloatPoint(0.4f, 0.6f), transform);
+}
+
+}  // namespace
+}  // namespace content