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      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
     64