screen_win.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019 
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_win.h"
6
7#include <windows.h>
8
9#include "base/logging.h"
10#include "ui/gfx/display.h"
11
12namespace {
13
14MONITORINFO GetMonitorInfoForMonitor(HMONITOR monitor) {
15  MONITORINFO monitor_info = { 0 };
16  monitor_info.cbSize = sizeof(monitor_info);
17  GetMonitorInfo(monitor, &monitor_info);
18  return monitor_info;
19}
20
21gfx::Display GetDisplay(MONITORINFO& monitor_info) {
22  // TODO(oshima): Implement ID and Observer.
23  gfx::Display display(0, gfx::Rect(monitor_info.rcMonitor));
24  display.set_work_area(gfx::Rect(monitor_info.rcWork));
25  return display;
26}
27
28}  // namespace
29
30namespace gfx {
31
32ScreenWin::ScreenWin() {
33}
34
35ScreenWin::~ScreenWin() {
36}
37
38bool ScreenWin::IsDIPEnabled() {
39  return false;
40}
41
42gfx::Point ScreenWin::GetCursorScreenPoint() {
43  POINT pt;
44  GetCursorPos(&pt);
45  return gfx::Point(pt);
46}
47
48gfx::NativeWindow ScreenWin::GetWindowAtCursorScreenPoint() {
49  POINT location;
50  HWND window_hwnd = GetCursorPos(&location) ? WindowFromPoint(location) : NULL;
51  return GetNativeWindowFromHWND(window_hwnd);
52}
53
54int ScreenWin::GetNumDisplays() {
55  return GetSystemMetrics(SM_CMONITORS);
56}
57
58gfx::Display ScreenWin::GetDisplayNearestWindow(gfx::NativeView window) const {
59  HWND window_hwnd = GetHWNDFromNativeView(window);
60  MONITORINFO monitor_info;
61  monitor_info.cbSize = sizeof(monitor_info);
62  GetMonitorInfo(MonitorFromWindow(window_hwnd, MONITOR_DEFAULTTONEAREST),
63                 &monitor_info);
64  return GetDisplay(monitor_info);
65}
66
67gfx::Display ScreenWin::GetDisplayNearestPoint(const gfx::Point& point) const {
68  POINT initial_loc = { point.x(), point.y() };
69  HMONITOR monitor = MonitorFromPoint(initial_loc, MONITOR_DEFAULTTONEAREST);
70  MONITORINFO mi = {0};
71  mi.cbSize = sizeof(mi);
72  if (monitor && GetMonitorInfo(monitor, &mi))
73    return GetDisplay(mi);
74  return gfx::Display();
75}
76
77gfx::Display ScreenWin::GetDisplayMatching(const gfx::Rect& match_rect) const {
78  RECT other_bounds_rect = match_rect.ToRECT();
79  MONITORINFO monitor_info = GetMonitorInfoForMonitor(MonitorFromRect(
80      &other_bounds_rect, MONITOR_DEFAULTTONEAREST));
81  return GetDisplay(monitor_info);
82}
83
84gfx::Display ScreenWin::GetPrimaryDisplay() const {
85  MONITORINFO mi = GetMonitorInfoForMonitor(
86      MonitorFromWindow(NULL, MONITOR_DEFAULTTOPRIMARY));
87  gfx::Display display = GetDisplay(mi);
88  DCHECK_EQ(GetSystemMetrics(SM_CXSCREEN), display.size().width());
89  DCHECK_EQ(GetSystemMetrics(SM_CYSCREEN), display.size().height());
90  return display;
91}
92
93HWND ScreenWin::GetHWNDFromNativeView(NativeView window) const {
94#if defined(USE_AURA)
95  NOTREACHED();
96  return NULL;
97#else
98  return window;
99#endif  // USE_AURA
100}
101
102NativeWindow ScreenWin::GetNativeWindowFromHWND(HWND hwnd) const {
103#if defined(USE_AURA)
104  NOTREACHED();
105  return NULL;
106#else
107  return hwnd;
108#endif  // USE_AURA
109}
110
111#if !defined(USE_AURA)
112Screen* CreateNativeScreen() {
113  return new ScreenWin;
114}
115#endif  // !USE_AURA
116
117}  // namespace gfx
118