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/geometry/size_conversions.h"
  11
  12 namespace gfx {
  13
  14 class ScreenAndroid : public Screen {
  15  public:
  16   ScreenAndroid() {}
  17
  18   gfx::Point GetCursorScreenPoint() override { return gfx::Point(); }
  19
  20   gfx::NativeWindow GetWindowUnderCursor() override {
  21     NOTIMPLEMENTED();
  22     return NULL;
  23   }
  24
  25   gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override {
  26     NOTIMPLEMENTED();
  27     return NULL;
  28   }
  29
  30   gfx::Display GetPrimaryDisplay() const override {
  31     gfx::DeviceDisplayInfo device_info;
  32     const float device_scale_factor = device_info.GetDIPScale();
  33     // Note: GetPhysicalDisplayWidth/Height() does not subtract window
  34     // decorations etc. Use it instead of GetDisplayWidth/Height() when
  35     // available.
  36     const gfx::Rect bounds_in_pixels =
  37         gfx::Rect(device_info.GetPhysicalDisplayWidth()
  38                       ? device_info.GetPhysicalDisplayWidth()
  39                       : device_info.GetDisplayWidth(),
  40                   device_info.GetPhysicalDisplayHeight()
  41                       ? device_info.GetPhysicalDisplayHeight()
  42                       : device_info.GetDisplayHeight());
  43     const gfx::Rect bounds_in_dip =
  44         gfx::Rect(gfx::ToCeiledSize(gfx::ScaleSize(
  45             bounds_in_pixels.size(), 1.0f / device_scale_factor)));
  46     gfx::Display display(0, bounds_in_dip);
  47     if (!gfx::Display::HasForceDeviceScaleFactor())
  48       display.set_device_scale_factor(device_scale_factor);
  49     display.SetRotationAsDegree(device_info.GetRotationDegrees());
  50     return display;
  51   }
  52
  53   gfx::Display GetDisplayNearestWindow(gfx::NativeView view) const override {
  54     return GetPrimaryDisplay();
  55   }
  56
  57   gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const override {
  58     return GetPrimaryDisplay();
  59   }
  60
  61   int GetNumDisplays() const override { return 1; }
  62
  63   std::vector<gfx::Display> GetAllDisplays() const override {
  64     return std::vector<gfx::Display>(1, GetPrimaryDisplay());
  65   }
  66
  67   gfx::Display GetDisplayMatching(const gfx::Rect& match_rect) const override {
  68     return GetPrimaryDisplay();
  69   }
  70
  71   void AddObserver(DisplayObserver* observer) override {
  72     // no display change on Android.
  73   }
  74
  75   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