cc/picture_layer_tiling_set_unittest.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/picture_layer_tiling_set.h"
   6
   7 #include "cc/test/fake_picture_layer_tiling_client.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9 #include "ui/gfx/size_conversions.h"
  10
  11 namespace cc {
  12
  13 TEST(PictureLayerTilingSetTest, NoResources) {
  14   FakePictureLayerTilingClient client;
  15   PictureLayerTilingSet set(&client);
  16   gfx::Size default_tile_size(256, 256);
  17
  18   gfx::Size layer_bounds(1000, 800);
  19   set.SetLayerBounds(layer_bounds);
  20
  21   set.AddTiling(1.0, default_tile_size);
  22   set.AddTiling(1.5, default_tile_size);
  23   set.AddTiling(2.0, default_tile_size);
  24
  25   float contents_scale = 2.0;
  26   gfx::Size content_bounds(
  27       gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, contents_scale)));
  28   gfx::Rect content_rect(gfx::Point(), content_bounds);
  29
  30   Region remaining(content_rect);
  31   PictureLayerTilingSet::Iterator iter(&set, contents_scale, content_rect);
  32   for (; iter; ++iter) {
  33     gfx::Rect geometry_rect = iter.geometry_rect();
  34     EXPECT_TRUE(content_rect.Contains(geometry_rect));
  35     ASSERT_TRUE(remaining.Contains(geometry_rect));
  36     remaining.Subtract(geometry_rect);
  37
  38     // No tiles have resources, so no iter represents a real tile.
  39     EXPECT_FALSE(*iter);
  40   }
  41   EXPECT_TRUE(remaining.IsEmpty());
  42 }
  43
  44 }  // namespace cc