display_info_provider.cc revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright 2013 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 "extensions/browser/api/system_display/display_info_provider.h"
6
7#include "base/strings/string_number_conversions.h"
8#include "extensions/common/api/system_display.h"
9#include "ui/gfx/display.h"
10#include "ui/gfx/screen.h"
11
12namespace extensions {
13
14namespace {
15
16// Created on demand and will leak when the process exits.
17DisplayInfoProvider* g_display_info_provider = NULL;
18
19// Converts Rotation enum to integer.
20int RotationToDegrees(gfx::Display::Rotation rotation) {
21  switch (rotation) {
22    case gfx::Display::ROTATE_0:
23      return 0;
24    case gfx::Display::ROTATE_90:
25      return 90;
26    case gfx::Display::ROTATE_180:
27      return 180;
28    case gfx::Display::ROTATE_270:
29      return 270;
30  }
31  return 0;
32}
33
34// Creates new DisplayUnitInfo struct for |display|.
35core_api::system_display::DisplayUnitInfo* CreateDisplayUnitInfo(
36    const gfx::Display& display,
37    int64 primary_display_id) {
38  core_api::system_display::DisplayUnitInfo* unit =
39      new core_api::system_display::DisplayUnitInfo();
40  const gfx::Rect& bounds = display.bounds();
41  const gfx::Rect& work_area = display.work_area();
42  unit->id = base::Int64ToString(display.id());
43  unit->is_primary = (display.id() == primary_display_id);
44  unit->is_internal = display.IsInternal();
45  unit->is_enabled = true;
46  unit->rotation = RotationToDegrees(display.rotation());
47  unit->bounds.left = bounds.x();
48  unit->bounds.top = bounds.y();
49  unit->bounds.width = bounds.width();
50  unit->bounds.height = bounds.height();
51  unit->work_area.left = work_area.x();
52  unit->work_area.top = work_area.y();
53  unit->work_area.width = work_area.width();
54  unit->work_area.height = work_area.height();
55  return unit;
56}
57
58}  // namespace
59
60DisplayInfoProvider::~DisplayInfoProvider() {
61}
62
63// static
64DisplayInfoProvider* DisplayInfoProvider::Get() {
65  if (g_display_info_provider == NULL)
66    g_display_info_provider = DisplayInfoProvider::Create();
67  return g_display_info_provider;
68}
69
70// static
71void DisplayInfoProvider::InitializeForTesting(
72    DisplayInfoProvider* display_info_provider) {
73  DCHECK(display_info_provider);
74  g_display_info_provider = display_info_provider;
75}
76
77DisplayInfo DisplayInfoProvider::GetAllDisplaysInfo() {
78  // TODO(scottmg): Native is wrong http://crbug.com/133312
79  gfx::Screen* screen = gfx::Screen::GetNativeScreen();
80  int64 primary_id = screen->GetPrimaryDisplay().id();
81  std::vector<gfx::Display> displays = screen->GetAllDisplays();
82  DisplayInfo all_displays;
83  for (int i = 0; i < screen->GetNumDisplays(); ++i) {
84    linked_ptr<core_api::system_display::DisplayUnitInfo> unit(
85        CreateDisplayUnitInfo(displays[i], primary_id));
86    UpdateDisplayUnitInfoForPlatform(displays[i], unit.get());
87    all_displays.push_back(unit);
88  }
89  return all_displays;
90}
91
92DisplayInfoProvider::DisplayInfoProvider() {
93}
94
95}  // namespace extensions
96