Extract MonitorInfoProvider from WindowSizer.

chrome/browser/ui/window_sizer_win.cc

 // Copyright (c) 2011 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 "chrome/browser/ui/window_sizer.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 
 // How much horizontal and vertical offset there is between newly
 // opened windows.
 const int WindowSizer::kWindowTilePixels = 10;
 
-// An implementation of WindowSizer::MonitorInfoProvider that gets the actual
-// monitor information from Windows.
-class DefaultMonitorInfoProvider : public WindowSizer::MonitorInfoProvider {
- public:
-  DefaultMonitorInfoProvider() { }
-
-  // Overridden from WindowSizer::MonitorInfoProvider:
-  virtual gfx::Rect GetPrimaryMonitorWorkArea() const {
-    return gfx::Rect(GetMonitorInfoForMonitor(MonitorFromWindow(NULL,
-        MONITOR_DEFAULTTOPRIMARY)).rcWork);
-  }
-
-  virtual gfx::Rect GetPrimaryMonitorBounds() const {
-    return gfx::Rect(GetMonitorInfoForMonitor(MonitorFromWindow(NULL,
-        MONITOR_DEFAULTTOPRIMARY)).rcMonitor);
-  }
-
-  virtual gfx::Rect GetMonitorWorkAreaMatching(
-      const gfx::Rect& match_rect) const {
-    RECT other_bounds_rect = match_rect.ToRECT();
-    MONITORINFO monitor_info = GetMonitorInfoForMonitor(MonitorFromRect(
-        &other_bounds_rect, MONITOR_DEFAULTTONEAREST));
-    return gfx::Rect(monitor_info.rcWork);
-  }
-
-  void UpdateWorkAreas() {
-    work_areas_.clear();
-    EnumDisplayMonitors(NULL, NULL,
-                        &DefaultMonitorInfoProvider::MonitorEnumProc,
-                        reinterpret_cast<LPARAM>(&work_areas_));
-  }
-
- private:
-  // A callback for EnumDisplayMonitors that records the work area of the
-  // current monitor in the enumeration.
-  static BOOL CALLBACK MonitorEnumProc(HMONITOR monitor,
-                                       HDC monitor_dc,
-                                       LPRECT monitor_rect,
-                                       LPARAM data) {
-    reinterpret_cast<std::vector<gfx::Rect>*>(data)->push_back(
-        gfx::Rect(GetMonitorInfoForMonitor(monitor).rcWork));
-    return TRUE;
-  }
-
-  static MONITORINFO GetMonitorInfoForMonitor(HMONITOR monitor) {
-    MONITORINFO monitor_info = { 0 };
-    monitor_info.cbSize = sizeof(monitor_info);
-    GetMonitorInfo(monitor, &monitor_info);
-    return monitor_info;
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(DefaultMonitorInfoProvider);
-};
-
-// static
-WindowSizer::MonitorInfoProvider*
-WindowSizer::CreateDefaultMonitorInfoProvider() {
-  return new DefaultMonitorInfoProvider();
-}
-
 // static
 gfx::Point WindowSizer::GetDefaultPopupOrigin(const gfx::Size& size) {
   RECT area;
   SystemParametersInfo(SPI_GETWORKAREA, 0, &area, 0);
   gfx::Point corner(area.left, area.top);
 
   if (Browser* b = BrowserList::GetLastActive()) {
     RECT browser;
     HWND window = reinterpret_cast<HWND>(b->window()->GetNativeHandle());
     if (GetWindowRect(window, &browser)) {
       // Limit to not overflow the work area right and bottom edges.
       gfx::Point limit(
           std::min(browser.left + kWindowTilePixels, area.right-size.width()),
           std::min(browser.top + kWindowTilePixels, area.bottom-size.height())
       );
       // Adjust corner to now overflow the work area left and top edges, so
       // that if a popup does not fit the title-bar is remains visible.
       corner = gfx::Point(
           std::max(corner.x(), limit.x()),
           std::max(corner.y(), limit.y())
       );
     }
   }
   return corner;
 }