Move ScreenWin to ui/display

ui/gfx/screen_win.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/gfx/screen_win.h"
-
-#include <windows.h>
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "ui/gfx/display.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/win/display_info.h"
-#include "ui/gfx/win/dpi.h"
-#include "ui/gfx/win/screen_win_display.h"
-
-namespace {
-
-std::vector<gfx::win::ScreenWinDisplay> DisplayInfosToScreenWinDisplays(
-    const std::vector<gfx::win::DisplayInfo>& display_infos) {
-  std::vector<gfx::win::ScreenWinDisplay> screen_win_displays;
-  for (const auto& display_info : display_infos)
-    screen_win_displays.push_back(gfx::win::ScreenWinDisplay(display_info));
-
-  return screen_win_displays;
-}
-
-std::vector<gfx::Display> ScreenWinDisplaysToDisplays(
-    const std::vector<gfx::win::ScreenWinDisplay>& screen_win_displays) {
-  std::vector<gfx::Display> displays;
-  for (const auto& screen_win_display : screen_win_displays)
-    displays.push_back(screen_win_display.display());
-
-  return displays;
-}
-
-MONITORINFOEX MonitorInfoFromHMONITOR(HMONITOR monitor) {
-  MONITORINFOEX monitor_info;
-  ::ZeroMemory(&monitor_info, sizeof(monitor_info));
-  monitor_info.cbSize = sizeof(monitor_info);
-  ::GetMonitorInfo(monitor, &monitor_info);
-  return monitor_info;
-}
-
-BOOL CALLBACK EnumMonitorCallback(HMONITOR monitor,
-                                  HDC hdc,
-                                  LPRECT rect,
-                                  LPARAM data) {
-  std::vector<gfx::win::DisplayInfo>* display_infos =
-      reinterpret_cast<std::vector<gfx::win::DisplayInfo>*>(data);
-  DCHECK(display_infos);
-  display_infos->push_back(
-      gfx::win::DisplayInfo(MonitorInfoFromHMONITOR(monitor),
-                            gfx::GetDPIScale()));
-  return TRUE;
-}
-
-std::vector<gfx::win::DisplayInfo> GetDisplayInfosFromSystem() {
-  std::vector<gfx::win::DisplayInfo> display_infos;
-  EnumDisplayMonitors(nullptr, nullptr, EnumMonitorCallback,
-                      reinterpret_cast<LPARAM>(&display_infos));
-  DCHECK_EQ(static_cast<size_t>(::GetSystemMetrics(SM_CMONITORS)),
-            display_infos.size());
-  return display_infos;
-}
-
-}  // namespace
-
-namespace gfx {
-
-ScreenWin::ScreenWin() {
-  Initialize();
-}
-
-ScreenWin::~ScreenWin() = default;
-
-HWND ScreenWin::GetHWNDFromNativeView(NativeView window) const {
-  NOTREACHED();
-  return nullptr;
-}
-
-NativeWindow ScreenWin::GetNativeWindowFromHWND(HWND hwnd) const {
-  NOTREACHED();
-  return nullptr;
-}
-
-gfx::Point ScreenWin::GetCursorScreenPoint() {
-  POINT pt;
-  ::GetCursorPos(&pt);
-  gfx::Point cursor_pos_pixels(pt);
-  return gfx::win::ScreenToDIPPoint(cursor_pos_pixels);
-}
-
-gfx::NativeWindow ScreenWin::GetWindowUnderCursor() {
-  POINT cursor_loc;
-  HWND hwnd =
-      ::GetCursorPos(&cursor_loc) ? ::WindowFromPoint(cursor_loc) : nullptr;
-  return GetNativeWindowFromHWND(hwnd);
-}
-
-gfx::NativeWindow ScreenWin::GetWindowAtScreenPoint(const gfx::Point& point) {
-  gfx::Point point_in_pixels = gfx::win::DIPToScreenPoint(point);
-  return GetNativeWindowFromHWND(WindowFromPoint(point_in_pixels.ToPOINT()));
-}
-
-int ScreenWin::GetNumDisplays() const {
-  return static_cast<int>(screen_win_displays_.size());
-}
-
-std::vector<gfx::Display> ScreenWin::GetAllDisplays() const {
-  return ScreenWinDisplaysToDisplays(screen_win_displays_);
-}
-
-gfx::Display ScreenWin::GetDisplayNearestWindow(gfx::NativeView window) const {
-  HWND window_hwnd = GetHWNDFromNativeView(window);
-  if (!window_hwnd) {
-    // When |window| isn't rooted to a display, we should just return the
-    // default display so we get some correct display information like the
-    // scaling factor.
-    return GetPrimaryDisplay();
-  }
-  gfx::win::ScreenWinDisplay screen_win_display =
-      GetScreenWinDisplayNearestHWND(window_hwnd);
-  return screen_win_display.display();
-}
-
-gfx::Display ScreenWin::GetDisplayNearestPoint(const gfx::Point& point) const {
-  gfx::Point screen_point(gfx::win::DIPToScreenPoint(point));
-  gfx::win::ScreenWinDisplay screen_win_display =
-      GetScreenWinDisplayNearestScreenPoint(screen_point);
-  return screen_win_display.display();
-}
-
-gfx::Display ScreenWin::GetDisplayMatching(const gfx::Rect& match_rect) const {
-  gfx::win::ScreenWinDisplay screen_win_display =
-      GetScreenWinDisplayNearestScreenRect(match_rect);
-  return screen_win_display.display();
-}
-
-gfx::Display ScreenWin::GetPrimaryDisplay() const {
-  return GetPrimaryScreenWinDisplay().display();
-}
-
-void ScreenWin::AddObserver(DisplayObserver* observer) {
-  change_notifier_.AddObserver(observer);
-}
-
-void ScreenWin::RemoveObserver(DisplayObserver* observer) {
-  change_notifier_.RemoveObserver(observer);
-}
-
-void ScreenWin::UpdateFromDisplayInfos(
-    const std::vector<gfx::win::DisplayInfo>& display_infos) {
-  screen_win_displays_ = DisplayInfosToScreenWinDisplays(display_infos);
-}
-
-void ScreenWin::Initialize() {
-  singleton_hwnd_observer_.reset(
-      new gfx::SingletonHwndObserver(
-          base::Bind(&ScreenWin::OnWndProc, base::Unretained(this))));
-  UpdateFromDisplayInfos(GetDisplayInfosFromSystem());
-}
-
-MONITORINFOEX ScreenWin::MonitorInfoFromScreenPoint(
-    const gfx::Point& screen_point) const {
-  POINT initial_loc = { screen_point.x(), screen_point.y() };
-  return MonitorInfoFromHMONITOR(::MonitorFromPoint(initial_loc,
-                                                    MONITOR_DEFAULTTONEAREST));
-}
-
-MONITORINFOEX ScreenWin::MonitorInfoFromScreenRect(const gfx::Rect& screen_rect)
-    const {
-  RECT win_rect = screen_rect.ToRECT();
-  return MonitorInfoFromHMONITOR(::MonitorFromRect(&win_rect,
-                                                   MONITOR_DEFAULTTONEAREST));
-}
-
-MONITORINFOEX ScreenWin::MonitorInfoFromWindow(HWND hwnd,
-                                               DWORD default_options) const {
-  return MonitorInfoFromHMONITOR(::MonitorFromWindow(hwnd, default_options));
-}
-
-HWND ScreenWin::GetRootWindow(HWND hwnd) const {
-  return ::GetAncestor(hwnd, GA_ROOT);
-}
-
-void ScreenWin::OnWndProc(HWND hwnd,
-                          UINT message,
-                          WPARAM wparam,
-                          LPARAM lparam) {
-  if (message != WM_DISPLAYCHANGE)
-    return;
-
-  std::vector<gfx::Display> old_displays = GetAllDisplays();
-  UpdateFromDisplayInfos(GetDisplayInfosFromSystem());
-  change_notifier_.NotifyDisplaysChanged(old_displays, GetAllDisplays());
-}
-
-gfx::win::ScreenWinDisplay ScreenWin::GetScreenWinDisplayNearestHWND(HWND hwnd)
-    const {
-  return GetScreenWinDisplay(MonitorInfoFromWindow(hwnd,
-                                                   MONITOR_DEFAULTTONEAREST));
-}
-
-gfx::win::ScreenWinDisplay ScreenWin::GetScreenWinDisplayNearestScreenRect(
-    const Rect& screen_rect) const {
-  return GetScreenWinDisplay(MonitorInfoFromScreenRect(screen_rect));
-}
-
-gfx::win::ScreenWinDisplay ScreenWin::GetScreenWinDisplayNearestScreenPoint(
-    const Point& screen_point) const {
-  return GetScreenWinDisplay(MonitorInfoFromScreenPoint(screen_point));
-}
-
-gfx::win::ScreenWinDisplay ScreenWin::GetPrimaryScreenWinDisplay() const {
-  MONITORINFOEX monitor_info = MonitorInfoFromWindow(nullptr,
-                                                     MONITOR_DEFAULTTOPRIMARY);
-  gfx::win::ScreenWinDisplay screen_win_display =
-      GetScreenWinDisplay(monitor_info);
-  gfx::Display display = screen_win_display.display();
-  // The Windows primary monitor is defined to have an origin of (0, 0).
-  DCHECK_EQ(0, display.bounds().origin().x());
-  DCHECK_EQ(0, display.bounds().origin().y());
-  return screen_win_display;
-}
-
-gfx::win::ScreenWinDisplay ScreenWin::GetScreenWinDisplay(
-    const MONITORINFOEX& monitor_info) const {
-  int64_t id =
-      gfx::win::DisplayInfo::DeviceIdFromDeviceName(monitor_info.szDevice);
-  for (const auto& screen_win_display : screen_win_displays_) {
-    if (screen_win_display.display().id() == id)
-      return screen_win_display;
-  }
-  // There is 1:1 correspondence between MONITORINFOEX and ScreenWinDisplay.
-  // If we make it here, it means we have no displays and we should hand out the
-  // default display.
-  DCHECK_EQ(screen_win_displays_.size(), 0u);
-  return gfx::win::ScreenWinDisplay();
-}
-
-}  // namespace gfx