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   virtual gfx::Point GetCursorScreenPoint() override { return gfx::Point(); }
  19
  20   virtual gfx::NativeWindow GetWindowUnderCursor() override {
  21     NOTIMPLEMENTED();
  22     return NULL;
  23   }
  24
  25   virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point)
  26       override {
  27     NOTIMPLEMENTED();
  28     return NULL;
  29   }
  30
  31   virtual gfx::Display GetPrimaryDisplay() const override {
  32     gfx::DeviceDisplayInfo device_info;
  33     const float device_scale_factor = device_info.GetDIPScale();
  34     // Note: GetPhysicalDisplayWidth/Height() does not subtract window
  35     // decorations etc. Use it instead of GetDisplayWidth/Height() when
  36     // available.
  37     const gfx::Rect bounds_in_pixels =
  38         gfx::Rect(device_info.GetPhysicalDisplayWidth()
  39                       ? device_info.GetPhysicalDisplayWidth()
  40                       : device_info.GetDisplayWidth(),
  41                   device_info.GetPhysicalDisplayHeight()
  42                       ? device_info.GetPhysicalDisplayHeight()
  43                       : device_info.GetDisplayHeight());
  44     const gfx::Rect bounds_in_dip =
  45         gfx::Rect(gfx::ToCeiledSize(gfx::ScaleSize(
  46             bounds_in_pixels.size(), 1.0f / device_scale_factor)));
  47     gfx::Display display(0, bounds_in_dip);
  48     if (!gfx::Display::HasForceDeviceScaleFactor())
  49       display.set_device_scale_factor(device_scale_factor);
  50     display.SetRotationAsDegree(device_info.GetRotationDegrees());
  51     return display;
  52   }
  53
  54   virtual gfx::Display GetDisplayNearestWindow(
  55       gfx::NativeView view) const override {
  56     return GetPrimaryDisplay();
  57   }
  58
  59   virtual gfx::Display GetDisplayNearestPoint(
  60       const gfx::Point& point) const override {
  61     return GetPrimaryDisplay();
  62   }
  63
  64   virtual int GetNumDisplays() const override { return 1; }
  65
  66   virtual std::vector<gfx::Display> GetAllDisplays() const override {
  67     return std::vector<gfx::Display>(1, GetPrimaryDisplay());
  68   }
  69
  70   virtual gfx::Display GetDisplayMatching(
  71       const gfx::Rect& match_rect) const override {
  72     return GetPrimaryDisplay();
  73   }
  74
  75   virtual void AddObserver(DisplayObserver* observer) override {
  76     // no display change on Android.
  77   }
  78
  79   virtual void RemoveObserver(DisplayObserver* observer) override {
  80     // no display change on Android.
  81   }
  82
  83  private:
  84   DISALLOW_COPY_AND_ASSIGN(ScreenAndroid);
  85 };
  86
  87 Screen* CreateNativeScreen() {
  88   return new ScreenAndroid;
  89 }
  90
  91 }  // namespace gfx