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// Copyright (c) 2013 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 "ui/snapshot/snapshot.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/aura/root_window.h"
#include "ui/aura/test/aura_test_helper.h"
#include "ui/aura/test/test_screen.h"
#include "ui/aura/test/test_window_delegate.h"
#include "ui/aura/test/test_windows.h"
#include "ui/aura/window.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/gfx_paths.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/size_conversions.h"
#include "ui/gfx/transform.h"
#include "ui/gl/gl_implementation.h"
namespace ui {
namespace {
const SkColor kPaintColor = SK_ColorRED;
// Paint simple rectangle on the specified aura window.
class TestPaintingWindowDelegate : public aura::test::TestWindowDelegate {
public:
explicit TestPaintingWindowDelegate(const gfx::Size& window_size)
: window_size_(window_size) {
}
virtual ~TestPaintingWindowDelegate() {
}
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
canvas->FillRect(gfx::Rect(window_size_), kPaintColor);
}
private:
gfx::Size window_size_;
DISALLOW_COPY_AND_ASSIGN(TestPaintingWindowDelegate);
};
size_t GetFailedPixelsCount(const gfx::Image& image) {
const SkBitmap* bitmap = image.ToSkBitmap();
uint32* bitmap_data = reinterpret_cast<uint32*>(
bitmap->pixelRef()->pixels());
size_t result = 0;
for (int i = 0; i < bitmap->width() * bitmap->height(); ++i) {
if (static_cast<SkColor>(bitmap_data[i]) != kPaintColor)
++result;
}
return result;
}
} // namespace
class SnapshotAuraTest : public testing::Test {
public:
SnapshotAuraTest() {}
virtual ~SnapshotAuraTest() {}
virtual void SetUp() OVERRIDE {
testing::Test::SetUp();
helper_.reset(
new aura::test::AuraTestHelper(base::MessageLoopForUI::current()));
helper_->SetUp();
}
virtual void TearDown() OVERRIDE {
test_window_.reset();
delegate_.reset();
helper_->RunAllPendingInMessageLoop();
helper_->TearDown();
testing::Test::TearDown();
}
protected:
aura::Window* test_window() { return test_window_.get(); }
aura::Window* root_window() { return helper_->root_window(); }
aura::WindowEventDispatcher* dispatcher() { return helper_->dispatcher(); }
aura::TestScreen* test_screen() { return helper_->test_screen(); }
void WaitForDraw() {
dispatcher()->compositor()->ScheduleDraw();
ui::DrawWaiterForTest::Wait(dispatcher()->compositor());
}
void SetupTestWindow(const gfx::Rect& window_bounds) {
delegate_.reset(new TestPaintingWindowDelegate(window_bounds.size()));
test_window_.reset(aura::test::CreateTestWindowWithDelegate(
delegate_.get(), 0, window_bounds, root_window()));
}
gfx::Image GrabSnapshotForTestWindow() {
std::vector<unsigned char> png_representation;
gfx::Rect local_bounds(test_window_->bounds().size());
ui::GrabWindowSnapshot(test_window(), &png_representation, local_bounds);
return gfx::Image::CreateFrom1xPNGBytes(
&(png_representation[0]), png_representation.size());
}
private:
scoped_ptr<aura::test::AuraTestHelper> helper_;
scoped_ptr<aura::Window> test_window_;
scoped_ptr<TestPaintingWindowDelegate> delegate_;
std::vector<unsigned char> png_representation_;
DISALLOW_COPY_AND_ASSIGN(SnapshotAuraTest);
};
TEST_F(SnapshotAuraTest, FullScreenWindow) {
SetupTestWindow(root_window()->bounds());
WaitForDraw();
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(test_window()->bounds().size().ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
TEST_F(SnapshotAuraTest, PartialBounds) {
gfx::Rect test_bounds(100, 100, 300, 200);
SetupTestWindow(test_bounds);
WaitForDraw();
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(test_bounds.size().ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
TEST_F(SnapshotAuraTest, Rotated) {
test_screen()->SetDisplayRotation(gfx::Display::ROTATE_90);
gfx::Rect test_bounds(100, 100, 300, 200);
SetupTestWindow(test_bounds);
WaitForDraw();
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(test_bounds.size().ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
TEST_F(SnapshotAuraTest, UIScale) {
const float kUIScale = 1.25f;
test_screen()->SetUIScale(kUIScale);
gfx::Rect test_bounds(100, 100, 300, 200);
SetupTestWindow(test_bounds);
WaitForDraw();
// Snapshot always captures the physical pixels.
gfx::SizeF snapshot_size(test_bounds.size());
snapshot_size.Scale(1.0f / kUIScale);
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(gfx::ToRoundedSize(snapshot_size).ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
TEST_F(SnapshotAuraTest, DeviceScaleFactor) {
test_screen()->SetDeviceScaleFactor(2.0f);
gfx::Rect test_bounds(100, 100, 150, 100);
SetupTestWindow(test_bounds);
WaitForDraw();
// Snapshot always captures the physical pixels.
gfx::SizeF snapshot_size(test_bounds.size());
snapshot_size.Scale(2.0f);
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(gfx::ToRoundedSize(snapshot_size).ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
TEST_F(SnapshotAuraTest, RotateAndUIScale) {
const float kUIScale = 1.25f;
test_screen()->SetUIScale(kUIScale);
test_screen()->SetDisplayRotation(gfx::Display::ROTATE_90);
gfx::Rect test_bounds(100, 100, 300, 200);
SetupTestWindow(test_bounds);
WaitForDraw();
// Snapshot always captures the physical pixels.
gfx::SizeF snapshot_size(test_bounds.size());
snapshot_size.Scale(1.0f / kUIScale);
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(gfx::ToRoundedSize(snapshot_size).ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
TEST_F(SnapshotAuraTest, RotateAndUIScaleAndScaleFactor) {
test_screen()->SetDeviceScaleFactor(2.0f);
const float kUIScale = 1.25f;
test_screen()->SetUIScale(kUIScale);
test_screen()->SetDisplayRotation(gfx::Display::ROTATE_90);
gfx::Rect test_bounds(20, 30, 150, 100);
SetupTestWindow(test_bounds);
WaitForDraw();
// Snapshot always captures the physical pixels.
gfx::SizeF snapshot_size(test_bounds.size());
snapshot_size.Scale(2.0f / kUIScale);
gfx::Image snapshot = GrabSnapshotForTestWindow();
EXPECT_EQ(gfx::ToRoundedSize(snapshot_size).ToString(),
snapshot.Size().ToString());
EXPECT_EQ(0u, GetFailedPixelsCount(snapshot));
}
} // namespace ui
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