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     // Note: GetPhysicalDisplayWidth/Height() does not subtract window
  37     // decorations etc. Use it instead of GetDisplayWidth/Height() when
  38     // available.
  39     const gfx::Rect bounds_in_pixels =
  40         gfx::Rect(device_info.GetPhysicalDisplayWidth()
  41                       ? device_info.GetPhysicalDisplayWidth()
  42                       : device_info.GetDisplayWidth(),
  43                   device_info.GetPhysicalDisplayHeight()
  44                       ? device_info.GetPhysicalDisplayHeight()
  45                       : device_info.GetDisplayHeight());
  46     const gfx::Rect bounds_in_dip =
  47         gfx::Rect(gfx::ToCeiledSize(gfx::ScaleSize(
  48             bounds_in_pixels.size(), 1.0f / device_scale_factor)));
  49     gfx::Display display(0, bounds_in_dip);
  50     if (!gfx::Display::HasForceDeviceScaleFactor())
  51       display.set_device_scale_factor(device_scale_factor);
  52     display.SetRotationAsDegree(device_info.GetRotationDegrees());
  53     return display;
  54   }
  55
  56   virtual gfx::Display GetDisplayNearestWindow(
  57       gfx::NativeView view) const OVERRIDE {
  58     return GetPrimaryDisplay();
  59   }
  60
  61   virtual gfx::Display GetDisplayNearestPoint(
  62       const gfx::Point& point) const OVERRIDE {
  63     return GetPrimaryDisplay();
  64   }
  65
  66   virtual int GetNumDisplays() const OVERRIDE { return 1; }
  67
  68   virtual std::vector<gfx::Display> GetAllDisplays() const OVERRIDE {
  69     return std::vector<gfx::Display>(1, GetPrimaryDisplay());
  70   }
  71
  72   virtual gfx::Display GetDisplayMatching(
  73       const gfx::Rect& match_rect) const OVERRIDE {
  74     return GetPrimaryDisplay();
  75   }
  76
  77   virtual void AddObserver(DisplayObserver* observer) OVERRIDE {
  78     // no display change on Android.
  79   }
  80
  81   virtual void RemoveObserver(DisplayObserver* observer) OVERRIDE {
  82     // no display change on Android.
  83   }
  84
  85  private:
  86   DISALLOW_COPY_AND_ASSIGN(ScreenAndroid);
  87 };
  88
  89 Screen* CreateNativeScreen() {
  90   return new ScreenAndroid;
  91 }
  92
  93 }  // namespace gfx