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
12namespace gfx {
13
14class 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
89Screen* CreateNativeScreen() {
90  return new ScreenAndroid;
91}
92
93}  // namespace gfx
94