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 ASH_WM_DRAG_WINDOW_RESIZER_H_ 6#define ASH_WM_DRAG_WINDOW_RESIZER_H_ 7 8#include "ash/wm/window_resizer.h" 9#include "base/compiler_specific.h" 10#include "base/gtest_prod_util.h" 11#include "ui/gfx/point.h" 12 13namespace ash { 14namespace internal { 15 16class DragWindowController; 17 18// DragWindowResizer is a decorator of WindowResizer and adds the ability to 19// drag windows across displays. 20class ASH_EXPORT DragWindowResizer : public WindowResizer { 21 public: 22 virtual ~DragWindowResizer(); 23 24 // Creates a new DragWindowResizer. The caller takes ownership of the 25 // returned object. The ownership of |next_window_resizer| is taken by the 26 // returned object. Returns NULL if not resizable. 27 static DragWindowResizer* Create(WindowResizer* next_window_resizer, 28 aura::Window* window, 29 const gfx::Point& location, 30 int window_component, 31 aura::client::WindowMoveSource source); 32 33 // WindowResizer: 34 virtual void Drag(const gfx::Point& location, int event_flags) OVERRIDE; 35 virtual void CompleteDrag(int event_flags) OVERRIDE; 36 virtual void RevertDrag() OVERRIDE; 37 virtual aura::Window* GetTarget() OVERRIDE; 38 virtual const gfx::Point& GetInitialLocation() const OVERRIDE; 39 40 private: 41 FRIEND_TEST_ALL_PREFIXES(DragWindowResizerTest, DragWindowController); 42 43 // Creates DragWindowResizer that adds the ability of dragging windows across 44 // displays to |next_window_resizer|. This object takes the ownership of 45 // |next_window_resizer|. 46 explicit DragWindowResizer(WindowResizer* next_window_resizer, 47 const Details& details); 48 49 // Updates the bounds of the phantom window for window dragging. Set true on 50 // |in_original_root| if the pointer is still in |window()->GetRootWindow()|. 51 void UpdateDragWindow(const gfx::Rect& bounds, bool in_original_root); 52 53 // Returns true if we should allow the mouse pointer to warp. 54 bool ShouldAllowMouseWarp(); 55 56 scoped_ptr<WindowResizer> next_window_resizer_; 57 58 // Shows a semi-transparent image of the window being dragged. 59 scoped_ptr<DragWindowController> drag_window_controller_; 60 61 const Details details_; 62 63 gfx::Point last_mouse_location_; 64 65 // If non-NULL the destructor sets this to true. Used to determine if this has 66 // been deleted. 67 bool* destroyed_; 68 69 // Current instance for use by the DragWindowResizerTest. 70 static DragWindowResizer* instance_; 71 72 DISALLOW_COPY_AND_ASSIGN(DragWindowResizer); 73}; 74 75} // namespace internal 76} // namespace aura 77 78#endif // ASH_WM_DRAG_WINDOW_RESIZER_H_ 79