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/layers/content_layer.h"
6
7#include "cc/layers/content_layer_client.h"
8#include "cc/resources/bitmap_content_layer_updater.h"
9#include "cc/test/fake_rendering_stats_instrumentation.h"
10#include "cc/test/geometry_test_utils.h"
11#include "skia/ext/platform_canvas.h"
12#include "testing/gtest/include/gtest/gtest.h"
13#include "ui/gfx/rect_conversions.h"
14
15namespace cc {
16namespace {
17
18class MockContentLayerClient : public ContentLayerClient {
19 public:
20  explicit MockContentLayerClient(const gfx::Rect& opaque_layer_rect)
21      : opaque_layer_rect_(opaque_layer_rect) {}
22
23  virtual void PaintContents(
24      SkCanvas* canvas,
25      const gfx::Rect& clip,
26      gfx::RectF* opaque,
27      ContentLayerClient::GraphicsContextStatus gc_status) OVERRIDE {
28    *opaque = gfx::RectF(opaque_layer_rect_);
29  }
30  virtual void DidChangeLayerCanUseLCDText() OVERRIDE {}
31  virtual bool FillsBoundsCompletely() const OVERRIDE { return false; }
32
33 private:
34  gfx::Rect opaque_layer_rect_;
35};
36
37TEST(ContentLayerTest, ContentLayerPainterWithDeviceScale) {
38  float contents_scale = 2.f;
39  gfx::Rect content_rect(10, 10, 100, 100);
40  gfx::Rect opaque_rect_in_layer_space(5, 5, 20, 20);
41  gfx::Rect opaque_rect_in_content_space = gfx::ScaleToEnclosingRect(
42      opaque_rect_in_layer_space, contents_scale, contents_scale);
43  MockContentLayerClient client(opaque_rect_in_layer_space);
44  FakeRenderingStatsInstrumentation stats_instrumentation;
45  scoped_refptr<BitmapContentLayerUpdater> updater =
46      BitmapContentLayerUpdater::Create(
47          ContentLayerPainter::Create(&client).PassAs<LayerPainter>(),
48          &stats_instrumentation,
49          0);
50
51  gfx::Rect resulting_opaque_rect;
52  updater->PrepareToUpdate(content_rect,
53                           gfx::Size(256, 256),
54                           contents_scale,
55                           contents_scale,
56                           &resulting_opaque_rect);
57
58  EXPECT_EQ(opaque_rect_in_content_space.ToString(),
59            resulting_opaque_rect.ToString());
60}
61
62}  // namespace
63}  // namespace cc
64