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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_AURA_ROOT_WINDOW_HOST_DELEGATE_H_
#define UI_AURA_ROOT_WINDOW_HOST_DELEGATE_H_
#include "ui/aura/aura_export.h"
namespace gfx {
class Point;
class Rect;
class Size;
}
namespace ui {
class Event;
class KeyEvent;
class MouseEvent;
class ScrollEvent;
class TouchEvent;
}
namespace aura {
class RootWindow;
// A private interface used by RootWindowHost implementations to communicate
// with their owning RootWindow.
class AURA_EXPORT RootWindowHostDelegate {
public:
virtual bool OnHostKeyEvent(ui::KeyEvent* event) = 0;
virtual bool OnHostMouseEvent(ui::MouseEvent* event) = 0;
virtual bool OnHostScrollEvent(ui::ScrollEvent* event) = 0;
virtual bool OnHostTouchEvent(ui::TouchEvent* event) = 0;
virtual void OnHostCancelMode() = 0;
// Called when the windowing system activates the window.
virtual void OnHostActivated() = 0;
// Called when system focus is changed to another window.
virtual void OnHostLostWindowCapture() = 0;
// Called when the windowing system has mouse grab because it's performing a
// window move on our behalf, but we should still paint as if we're active.
virtual void OnHostLostMouseGrab() = 0;
virtual void OnHostPaint(const gfx::Rect& damage_rect) = 0;
virtual void OnHostMoved(const gfx::Point& origin) = 0;
virtual void OnHostResized(const gfx::Size& size) = 0;
virtual float GetDeviceScaleFactor() = 0;
virtual RootWindow* AsRootWindow() = 0;
virtual const RootWindow* AsRootWindow() const = 0;
protected:
virtual ~RootWindowHostDelegate() {}
};
} // namespace aura
#endif // UI_AURA_ROOT_WINDOW_HOST_DELEGATE_H_