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// Copyright (c) 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.
#ifndef UI_COMPOSITOR_DIP_UTIL_H_
#define UI_COMPOSITOR_DIP_UTIL_H_
#pragma once
#include "ui/compositor/compositor_export.h"
#include "base/basictypes.h"
namespace gfx {
class Point;
class Size;
class Rect;
} // namespace gfx
namespace ui {
namespace test {
// A scoped object allows you to temporarily enable DIP
// in the unit tests.
class COMPOSITOR_EXPORT ScopedDIPEnablerForTest {
public:
ScopedDIPEnablerForTest();
~ScopedDIPEnablerForTest();
private:
DISALLOW_COPY_AND_ASSIGN(ScopedDIPEnablerForTest);
};
} // namespace test
class Layer;
// True if DIP is enabled.
COMPOSITOR_EXPORT bool IsDIPEnabled();
COMPOSITOR_EXPORT float GetDeviceScaleFactor(const Layer* layer);
// Utility functions that convert point/size/rect between
// DIP and pixel coordinates system.
COMPOSITOR_EXPORT gfx::Point ConvertPointToDIP(
const Layer* layer,
const gfx::Point& point_in_pixel);
COMPOSITOR_EXPORT gfx::Size ConvertSizeToDIP(
const Layer* layer,
const gfx::Size& size_in_pixel);
COMPOSITOR_EXPORT gfx::Rect ConvertRectToDIP(
const Layer* layer,
const gfx::Rect& rect_in_pixel);
COMPOSITOR_EXPORT gfx::Point ConvertPointToPixel(
const Layer* layer,
const gfx::Point& point_in_dip);
COMPOSITOR_EXPORT gfx::Size ConvertSizeToPixel(
const Layer* layer,
const gfx::Size& size_in_dip);
COMPOSITOR_EXPORT gfx::Rect ConvertRectToPixel(
const Layer* layer,
const gfx::Rect& rect_in_dip);
} // namespace ui
#endif // UI_COMPOSITOR_DIP_UTIL_H_
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