ui/gfx/screen_win.h

   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 #ifndef UI_GFX_SCREEN_WIN_H_
   6 #define UI_GFX_SCREEN_WIN_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "ui/gfx/display_change_notifier.h"
  10 #include "ui/gfx/gfx_export.h"
  11 #include "ui/gfx/screen.h"
  12 #include "ui/gfx/win/singleton_hwnd.h"
  13
  14 namespace gfx {
  15
  16 class GFX_EXPORT ScreenWin : public Screen,
  17                              public SingletonHwnd::Observer {
  18  public:
  19   ScreenWin();
  20   virtual ~ScreenWin();
  21
  22  protected:
  23   // Overridden from gfx::Screen:
  24   virtual bool IsDIPEnabled() override;
  25   virtual gfx::Point GetCursorScreenPoint() override;
  26   virtual gfx::NativeWindow GetWindowUnderCursor() override;
  27   virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point)
  28       override;
  29   virtual int GetNumDisplays() const override;
  30   virtual std::vector<gfx::Display> GetAllDisplays() const override;
  31   virtual gfx::Display GetDisplayNearestWindow(
  32       gfx::NativeView window) const override;
  33   virtual gfx::Display GetDisplayNearestPoint(
  34       const gfx::Point& point) const override;
  35   virtual gfx::Display GetDisplayMatching(
  36       const gfx::Rect& match_rect) const override;
  37   virtual gfx::Display GetPrimaryDisplay() const override;
  38   virtual void AddObserver(DisplayObserver* observer) override;
  39   virtual void RemoveObserver(DisplayObserver* observer) override;
  40
  41   // Overriden from gfx::SingletonHwnd::Observer.
  42   virtual void OnWndProc(HWND hwnd,
  43                          UINT message,
  44                          WPARAM wparam,
  45                          LPARAM lparam) override;
  46
  47   // Returns the HWND associated with the NativeView.
  48   virtual HWND GetHWNDFromNativeView(NativeView window) const;
  49
  50   // Returns the NativeView associated with the HWND.
  51   virtual NativeWindow GetNativeWindowFromHWND(HWND hwnd) const;
  52
  53  private:
  54   // Helper implementing the DisplayObserver handling.
  55   gfx::DisplayChangeNotifier change_notifier_;
  56
  57   // Current list of displays.
  58   std::vector<gfx::Display> displays_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(ScreenWin);
  61 };
  62
  63 }  // namespace gfx
  64
  65 #endif  // UI_GFX_SCREEN_WIN_H_