src/content/browser/renderer_host/dip_util.cc

   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 "content/browser/renderer_host/dip_util.h"
   6
   7 #include "content/public/browser/render_widget_host_view.h"
   8 #include "ui/gfx/display.h"
   9 #include "ui/gfx/point.h"
  10 #include "ui/gfx/point_conversions.h"
  11 #include "ui/gfx/rect.h"
  12 #include "ui/gfx/rect_conversions.h"
  13 #include "ui/gfx/screen.h"
  14 #include "ui/gfx/size.h"
  15 #include "ui/gfx/size_conversions.h"
  16
  17 namespace content {
  18 namespace {
  19
  20 float GetScaleForView(const RenderWidgetHostView* view) {
  21   return ui::GetImageScale(GetScaleFactorForView(view));
  22 }
  23
  24 }  // namespace
  25
  26 ui::ScaleFactor GetScaleFactorForView(const RenderWidgetHostView* view) {
  27   return ui::GetScaleFactorForNativeView(view ? view->GetNativeView() : NULL);
  28 }
  29
  30 gfx::Point ConvertViewPointToDIP(const RenderWidgetHostView* view,
  31                                  const gfx::Point& point_in_pixel) {
  32   return gfx::ToFlooredPoint(
  33       gfx::ScalePoint(point_in_pixel, 1.0f / GetScaleForView(view)));
  34 }
  35
  36 gfx::Size ConvertViewSizeToPixel(const RenderWidgetHostView* view,
  37                                  const gfx::Size& size_in_dip) {
  38   return gfx::ToFlooredSize(
  39       gfx::ScaleSize(size_in_dip, GetScaleForView(view)));
  40 }
  41
  42 gfx::Rect ConvertViewRectToPixel(const RenderWidgetHostView* view,
  43                                  const gfx::Rect& rect_in_dip) {
  44     return ConvertRectToPixel(GetScaleForView(view), rect_in_dip);
  45 }
  46
  47 gfx::Size ConvertSizeToDIP(float scale_factor,
  48                            const gfx::Size& size_in_pixel) {
  49   return gfx::ToFlooredSize(
  50       gfx::ScaleSize(size_in_pixel, 1.0f / scale_factor));
  51 }
  52
  53 gfx::Rect ConvertRectToDIP(float scale_factor,
  54                            const gfx::Rect& rect_in_pixel) {
  55   return gfx::ToFlooredRectDeprecated(
  56       gfx::ScaleRect(rect_in_pixel, 1.0f / scale_factor));
  57 }
  58
  59
  60 gfx::Rect ConvertRectToPixel(float scale_factor,
  61                              const gfx::Rect& rect_in_dip) {
  62     return gfx::ToFlooredRectDeprecated(
  63         gfx::ScaleRect(rect_in_dip, scale_factor));
  64 }
  65
  66 }  // namespace content