| // 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_ |
| |
| #include "ui/compositor/compositor_export.h" |
| #include "ui/gfx/geometry/point_f.h" |
| |
| namespace gfx { |
| class Point; |
| class Size; |
| class Rect; |
| } // namespace gfx |
| |
| namespace ui { |
| class Layer; |
| |
| 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::PointF ConvertPointToDIP( |
| const Layer* layer, |
| const gfx::PointF& 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); |
| |
| // Snaps the |layer_to_snap| to the physical pixel boundary. |
| // |snapped_layer| is a reference layer that should also be |
| // snapped at the pysical pixel boundary. |
| COMPOSITOR_EXPORT void SnapLayerToPhysicalPixelBoundary( |
| ui::Layer* snapped_layer, |
| ui::Layer* layer_to_snap); |
| |
| } // namespace ui |
| |
| #endif // UI_COMPOSITOR_DIP_UTIL_H_ |