ui/gfx/screen_android.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 "ui/gfx/screen.h"
   6
   7 #include "base/logging.h"
   8 #include "ui/gfx/android/device_display_info.h"
   9 #include "ui/gfx/display.h"
  10 #include "ui/gfx/size_conversions.h"
  11
  12 namespace gfx {
  13
  14 class ScreenAndroid : public Screen {
  15  public:
  16   ScreenAndroid() {}
  17
  18   virtual bool IsDIPEnabled() OVERRIDE { return true; }
  19
  20   virtual gfx::Point GetCursorScreenPoint() OVERRIDE { return gfx::Point(); }
  21
  22   virtual gfx::NativeWindow GetWindowUnderCursor() OVERRIDE {
  23     NOTIMPLEMENTED();
  24     return NULL;
  25   }
  26
  27   virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point)
  28       OVERRIDE {
  29     NOTIMPLEMENTED();
  30     return NULL;
  31   }
  32
  33   virtual gfx::Display GetPrimaryDisplay() const OVERRIDE {
  34     gfx::DeviceDisplayInfo device_info;
  35     const float device_scale_factor = device_info.GetDIPScale();
  36     const gfx::Rect bounds_in_pixels =
  37         gfx::Rect(
  38             device_info.GetDisplayWidth(),
  39             device_info.GetDisplayHeight());
  40     const gfx::Rect bounds_in_dip =
  41         gfx::Rect(gfx::ToCeiledSize(gfx::ScaleSize(
  42             bounds_in_pixels.size(), 1.0f / device_scale_factor)));
  43     gfx::Display display(0, bounds_in_dip);
  44     if (!gfx::Display::HasForceDeviceScaleFactor())
  45       display.set_device_scale_factor(device_scale_factor);
  46     display.SetRotationAsDegree(device_info.GetRotationDegrees());
  47     return display;
  48   }
  49
  50   virtual gfx::Display GetDisplayNearestWindow(
  51       gfx::NativeView view) const OVERRIDE {
  52     return GetPrimaryDisplay();
  53   }
  54
  55   virtual gfx::Display GetDisplayNearestPoint(
  56       const gfx::Point& point) const OVERRIDE {
  57     return GetPrimaryDisplay();
  58   }
  59
  60   virtual int GetNumDisplays() const OVERRIDE { return 1; }
  61
  62   virtual std::vector<gfx::Display> GetAllDisplays() const OVERRIDE {
  63     return std::vector<gfx::Display>(1, GetPrimaryDisplay());
  64   }
  65
  66   virtual gfx::Display GetDisplayMatching(
  67       const gfx::Rect& match_rect) const OVERRIDE {
  68     return GetPrimaryDisplay();
  69   }
  70
  71   virtual void AddObserver(DisplayObserver* observer) OVERRIDE {
  72     // no display change on Android.
  73   }
  74
  75   virtual void RemoveObserver(DisplayObserver* observer) OVERRIDE {
  76     // no display change on Android.
  77   }
  78
  79  private:
  80   DISALLOW_COPY_AND_ASSIGN(ScreenAndroid);
  81 };
  82
  83 Screen* CreateNativeScreen() {
  84   return new ScreenAndroid;
  85 }
  86
  87 }  // namespace gfx