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// 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.
#ifndef UI_GFX_SCREEN_WIN_H_
#define UI_GFX_SCREEN_WIN_H_
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "ui/gfx/display_change_notifier.h"
#include "ui/gfx/gfx_export.h"
#include "ui/gfx/screen.h"
#include "ui/gfx/win/singleton_hwnd_observer.h"
namespace gfx {
class GFX_EXPORT ScreenWin : public Screen {
public:
ScreenWin();
~ScreenWin() override;
protected:
// Overridden from gfx::Screen:
gfx::Point GetCursorScreenPoint() override;
gfx::NativeWindow GetWindowUnderCursor() override;
gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point) override;
int GetNumDisplays() const override;
std::vector<gfx::Display> GetAllDisplays() const override;
gfx::Display GetDisplayNearestWindow(gfx::NativeView window) const override;
gfx::Display GetDisplayNearestPoint(const gfx::Point& point) const override;
gfx::Display GetDisplayMatching(const gfx::Rect& match_rect) const override;
gfx::Display GetPrimaryDisplay() const override;
void AddObserver(DisplayObserver* observer) override;
void RemoveObserver(DisplayObserver* observer) override;
// Returns the HWND associated with the NativeView.
virtual HWND GetHWNDFromNativeView(NativeView window) const;
// Returns the NativeView associated with the HWND.
virtual NativeWindow GetNativeWindowFromHWND(HWND hwnd) const;
private:
void OnWndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);
// Helper implementing the DisplayObserver handling.
gfx::DisplayChangeNotifier change_notifier_;
scoped_ptr<SingletonHwndObserver> singleton_hwnd_observer_;
// Current list of displays.
std::vector<gfx::Display> displays_;
DISALLOW_COPY_AND_ASSIGN(ScreenWin);
};
} // namespace gfx
#endif // UI_GFX_SCREEN_WIN_H_
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