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// 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/layers/content_layer.h"
#include "cc/layers/content_layer_client.h"
#include "cc/resources/bitmap_content_layer_updater.h"
#include "cc/test/fake_rendering_stats_instrumentation.h"
#include "cc/test/geometry_test_utils.h"
#include "skia/ext/platform_canvas.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/rect_conversions.h"
namespace cc {
namespace {
class MockContentLayerClient : public ContentLayerClient {
public:
explicit MockContentLayerClient(gfx::Rect opaque_layer_rect)
: opaque_layer_rect_(opaque_layer_rect) {}
virtual void PaintContents(SkCanvas* canvas,
gfx::Rect clip,
gfx::RectF* opaque) OVERRIDE {
*opaque = gfx::RectF(opaque_layer_rect_);
}
virtual void DidChangeLayerCanUseLCDText() OVERRIDE {}
private:
gfx::Rect opaque_layer_rect_;
};
TEST(ContentLayerTest, ContentLayerPainterWithDeviceScale) {
float contents_scale = 2.f;
gfx::Rect content_rect(10, 10, 100, 100);
gfx::Rect opaque_rect_in_layer_space(5, 5, 20, 20);
gfx::Rect opaque_rect_in_content_space = gfx::ScaleToEnclosingRect(
opaque_rect_in_layer_space, contents_scale, contents_scale);
MockContentLayerClient client(opaque_rect_in_layer_space);
FakeRenderingStatsInstrumentation stats_instrumentation;
scoped_refptr<BitmapContentLayerUpdater> updater =
BitmapContentLayerUpdater::Create(
ContentLayerPainter::Create(&client).PassAs<LayerPainter>(),
&stats_instrumentation,
0);
gfx::Rect resulting_opaque_rect;
updater->PrepareToUpdate(content_rect,
gfx::Size(256, 256),
contents_scale,
contents_scale,
&resulting_opaque_rect);
EXPECT_EQ(opaque_rect_in_content_space.ToString(),
resulting_opaque_rect.ToString());
}
} // namespace
} // namespace cc
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