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_AURA_ROOT_WINDOW_HOST_DELEGATE_H_ 6 #define UI_AURA_ROOT_WINDOW_HOST_DELEGATE_H_ 7 8 #include "ui/aura/aura_export.h" 9 10 namespace gfx { 11 class Point; 12 class Rect; 13 class Size; 14 } 15 16 namespace ui { 17 class Event; 18 class KeyEvent; 19 class MouseEvent; 20 class ScrollEvent; 21 class TouchEvent; 22 } 23 24 namespace aura { 25 26 class RootWindow; 27 28 // A private interface used by RootWindowHost implementations to communicate 29 // with their owning RootWindow. 30 class AURA_EXPORT RootWindowHostDelegate { 31 public: 32 virtual bool OnHostKeyEvent(ui::KeyEvent* event) = 0; 33 virtual bool OnHostMouseEvent(ui::MouseEvent* event) = 0; 34 virtual bool OnHostScrollEvent(ui::ScrollEvent* event) = 0; 35 virtual bool OnHostTouchEvent(ui::TouchEvent* event) = 0; 36 virtual void OnHostCancelMode() = 0; 37 38 // Called when the windowing system activates the window. 39 virtual void OnHostActivated() = 0; 40 41 // Called when system focus is changed to another window. 42 virtual void OnHostLostWindowCapture() = 0; 43 44 // Called when the windowing system has mouse grab because it's performing a 45 // window move on our behalf, but we should still paint as if we're active. 46 virtual void OnHostLostMouseGrab() = 0; 47 48 virtual void OnHostPaint(const gfx::Rect& damage_rect) = 0; 49 50 virtual void OnHostMoved(const gfx::Point& origin) = 0; 51 virtual void OnHostResized(const gfx::Size& size) = 0; 52 53 virtual float GetDeviceScaleFactor() = 0; 54 55 virtual RootWindow* AsRootWindow() = 0; 56 57 protected: 58 virtual ~RootWindowHostDelegate() {} 59 }; 60 61 } // namespace aura 62 63 #endif // UI_AURA_ROOT_WINDOW_HOST_DELEGATE_H_ 64
