1// Copyright (c) 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 "ui/compositor/dip_util.h" 6 7#include "base/command_line.h" 8#include "ui/compositor/compositor.h" 9#include "ui/compositor/compositor_switches.h" 10#include "ui/compositor/layer.h" 11#include "ui/gfx/display.h" 12#include "ui/gfx/point.h" 13#include "ui/gfx/point_conversions.h" 14#include "ui/gfx/rect.h" 15#include "ui/gfx/rect_conversions.h" 16#include "ui/gfx/size.h" 17#include "ui/gfx/size_conversions.h" 18 19namespace ui { 20 21float GetDeviceScaleFactor(const Layer* layer) { 22 return layer->device_scale_factor(); 23} 24 25gfx::Point ConvertPointToDIP(const Layer* layer, 26 const gfx::Point& point_in_pixel) { 27 return gfx::ToFlooredPoint( 28 gfx::ScalePoint(point_in_pixel, 1.0f / GetDeviceScaleFactor(layer))); 29} 30 31gfx::PointF ConvertPointToDIP(const Layer* layer, 32 const gfx::PointF& point_in_pixel) { 33 return gfx::ScalePoint(point_in_pixel, 1.0f / GetDeviceScaleFactor(layer)); 34} 35 36gfx::Size ConvertSizeToDIP(const Layer* layer, 37 const gfx::Size& size_in_pixel) { 38 return gfx::ToFlooredSize( 39 gfx::ScaleSize(size_in_pixel, 1.0f / GetDeviceScaleFactor(layer))); 40} 41 42gfx::Rect ConvertRectToDIP(const Layer* layer, 43 const gfx::Rect& rect_in_pixel) { 44 float scale = 1.0f / GetDeviceScaleFactor(layer); 45 return gfx::ToFlooredRectDeprecated(gfx::ScaleRect(rect_in_pixel, scale)); 46} 47 48gfx::Point ConvertPointToPixel(const Layer* layer, 49 const gfx::Point& point_in_dip) { 50 return gfx::ToFlooredPoint( 51 gfx::ScalePoint(point_in_dip, GetDeviceScaleFactor(layer))); 52} 53 54gfx::Size ConvertSizeToPixel(const Layer* layer, 55 const gfx::Size& size_in_dip) { 56 return gfx::ToFlooredSize( 57 gfx::ScaleSize(size_in_dip, GetDeviceScaleFactor(layer))); 58} 59 60gfx::Rect ConvertRectToPixel(const Layer* layer, 61 const gfx::Rect& rect_in_dip) { 62 float scale = GetDeviceScaleFactor(layer); 63 // Use ToEnclosingRect() to ensure we paint all the possible pixels 64 // touched. ToEnclosingRect() floors the origin, and ceils the max 65 // coordinate. To do otherwise (such as flooring the size) potentially 66 // results in rounding down and not drawing all the pixels that are 67 // touched. 68 return gfx::ToEnclosingRect( 69 gfx::RectF(gfx::ScalePoint(rect_in_dip.origin(), scale), 70 gfx::ScaleSize(rect_in_dip.size(), scale))); 71} 72 73} // namespace ui 74