Part 8 of cc/ directory shuffles: resources

Continuation of https://src.chromium.org/viewvc/chrome?view=rev&revision=188681

BUG=190824
TBR=enne@chromium.org, piman@chromium.org, jschuh@chromium.org

Review URL: https://codereview.chromium.org/12471007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@188696 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 153 insertions, 0 deletions

diff --git a/cc/resources/picture_layer_tiling_set_unittest.cc b/cc/resources/picture_layer_tiling_set_unittest.cc
new file mode 100644
index 0000000..76110b0
--- /dev/null
+++ b/cc/resources/picture_layer_tiling_set_unittest.cc
@@ -0,0 +1,153 @@
+// Copyright 2012 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 "cc/resources/picture_layer_tiling_set.h"
+
+#include "cc/resources/resource_pool.h"
+#include "cc/resources/resource_provider.h"
+#include "cc/test/fake_output_surface.h"
+#include "cc/test/fake_picture_layer_tiling_client.h"
+#include "cc/test/fake_tile_manager_client.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/size_conversions.h"
+
+namespace cc {
+namespace {
+
+TEST(PictureLayerTilingSetTest, NoResources) {
+  FakePictureLayerTilingClient client;
+  PictureLayerTilingSet set(&client);
+  client.SetTileSize(gfx::Size(256, 256));
+
+  gfx::Size layer_bounds(1000, 800);
+  set.SetLayerBounds(layer_bounds);
+
+  set.AddTiling(1.0);
+  set.AddTiling(1.5);
+  set.AddTiling(2.0);
+
+  float contents_scale = 2.0;
+  gfx::Size content_bounds(
+      gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, contents_scale)));
+  gfx::Rect content_rect(gfx::Point(), content_bounds);
+
+  Region remaining(content_rect);
+  PictureLayerTilingSet::Iterator iter(
+      &set,
+      contents_scale,
+      content_rect,
+      contents_scale,
+      PictureLayerTiling::LayerDeviceAlignmentUnknown);
+  for (; iter; ++iter) {
+    gfx::Rect geometry_rect = iter.geometry_rect();
+    EXPECT_TRUE(content_rect.Contains(geometry_rect));
+    ASSERT_TRUE(remaining.Contains(geometry_rect));
+    remaining.Subtract(geometry_rect);
+
+    // No tiles have resources, so no iter represents a real tile.
+    EXPECT_FALSE(*iter);
+  }
+  EXPECT_TRUE(remaining.IsEmpty());
+}
+
+class PictureLayerTilingSetTestWithResources : public testing::Test {
+ public:
+  void runTest(
+      int num_tilings,
+      float min_scale,
+      float scale_increment,
+      float ideal_contents_scale,
+      float expected_scale) {
+    scoped_ptr<FakeOutputSurface> output_surface =
+        FakeOutputSurface::Create3d();
+    scoped_ptr<ResourceProvider> resource_provider =
+        ResourceProvider::Create(output_surface.get());
+
+    FakePictureLayerTilingClient client;
+    client.SetTileSize(gfx::Size(256, 256));
+    PictureLayerTilingSet set(&client);
+
+    gfx::Size layer_bounds(1000, 800);
+    set.SetLayerBounds(layer_bounds);
+
+    float scale = min_scale;
+    for (int i = 0; i < num_tilings; ++i, scale += scale_increment) {
+      PictureLayerTiling* tiling = set.AddTiling(scale);
+      std::vector<Tile*> tiles = tiling->AllTilesForTesting();
+      for (size_t i = 0; i < tiles.size(); ++i) {
+        EXPECT_FALSE(tiles[i]->drawing_info().GetResourceForTesting());
+
+        tiles[i]->drawing_info().GetResourceForTesting() =
+            make_scoped_ptr(new ResourcePool::Resource(
+                resource_provider.get(),
+                gfx::Size(1, 1),
+                resource_provider->best_texture_format()));
+      }
+    }
+
+    float max_contents_scale = scale;
+    gfx::Size content_bounds(
+        gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, max_contents_scale)));
+    gfx::Rect content_rect(gfx::Point(), content_bounds);
+
+    Region remaining(content_rect);
+    PictureLayerTilingSet::Iterator iter(
+        &set,
+        max_contents_scale,
+        content_rect,
+        ideal_contents_scale,
+        PictureLayerTiling::LayerDeviceAlignmentUnknown);
+    for (; iter; ++iter) {
+      gfx::Rect geometry_rect = iter.geometry_rect();
+      EXPECT_TRUE(content_rect.Contains(geometry_rect));
+      ASSERT_TRUE(remaining.Contains(geometry_rect));
+      remaining.Subtract(geometry_rect);
+
+      float scale = iter.CurrentTiling()->contents_scale();
+      EXPECT_EQ(expected_scale, scale);
+
+      if (num_tilings)
+        EXPECT_TRUE(*iter);
+      else
+        EXPECT_FALSE(*iter);
+    }
+    EXPECT_TRUE(remaining.IsEmpty());
+  }
+};
+
+TEST_F(PictureLayerTilingSetTestWithResources, NoTilings) {
+  runTest(0, 0.f, 0.f, 2.f, 0.f);
+}
+TEST_F(PictureLayerTilingSetTestWithResources, OneTiling_Smaller) {
+  runTest(1, 1.f, 0.f, 2.f, 1.f);
+}
+TEST_F(PictureLayerTilingSetTestWithResources, OneTiling_Larger) {
+  runTest(1, 3.f, 0.f, 2.f, 3.f);
+}
+TEST_F(PictureLayerTilingSetTestWithResources, TwoTilings_Smaller) {
+  runTest(2, 1.f, 1.f, 3.f, 2.f);
+}
+
+TEST_F(PictureLayerTilingSetTestWithResources, TwoTilings_SmallerEqual) {
+  runTest(2, 1.f, 1.f, 2.f, 2.f);
+}
+
+TEST_F(PictureLayerTilingSetTestWithResources, TwoTilings_LargerEqual) {
+  runTest(2, 1.f, 1.f, 1.f, 1.f);
+}
+
+TEST_F(PictureLayerTilingSetTestWithResources, TwoTilings_Larger) {
+  runTest(2, 2.f, 8.f, 1.f, 2.f);
+}
+
+TEST_F(PictureLayerTilingSetTestWithResources, ManyTilings_Equal) {
+  runTest(10, 1.f, 1.f, 5.f, 5.f);
+}
+
+TEST_F(PictureLayerTilingSetTestWithResources, ManyTilings_NotEqual) {
+  runTest(10, 1.f, 1.f, 4.5f, 5.f);
+}
+
+}  // namespace
+}  // namespace cc