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 namespace {
  13
  14 TEST(PictureLayerTilingSetTest, NoResources) {
  15   FakePictureLayerTilingClient client;
  16   PictureLayerTilingSet set(&client);
  17   gfx::Size default_tile_size(256, 256);
  18
  19   gfx::Size layer_bounds(1000, 800);
  20   set.SetLayerBounds(layer_bounds);
  21
  22   set.AddTiling(1.0, default_tile_size);
  23   set.AddTiling(1.5, default_tile_size);
  24   set.AddTiling(2.0, default_tile_size);
  25
  26   float contents_scale = 2.0;
  27   gfx::Size content_bounds(
  28       gfx::ToCeiledSize(gfx::ScaleSize(layer_bounds, contents_scale)));
  29   gfx::Rect content_rect(gfx::Point(), content_bounds);
  30
  31   Region remaining(content_rect);
  32   PictureLayerTilingSet::Iterator iter(
  33       &set,
  34       contents_scale,
  35       content_rect,
  36       contents_scale);
  37   for (; iter; ++iter) {
  38     gfx::Rect geometry_rect = iter.geometry_rect();
  39     EXPECT_TRUE(content_rect.Contains(geometry_rect));
  40     ASSERT_TRUE(remaining.Contains(geometry_rect));
  41     remaining.Subtract(geometry_rect);
  42
  43     // No tiles have resources, so no iter represents a real tile.
  44     EXPECT_FALSE(*iter);
  45   }
  46   EXPECT_TRUE(remaining.IsEmpty());
  47 }
  48
  49 }  // namespace
  50 }  // namespace cc