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