1 // Copyright (c) 2013 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_DOCK_DOCK_WINDOW_RESIZER_H_ 6 #define ASH_WM_DOCK_DOCK_WINDOW_RESIZER_H_ 7 8 #include "ash/wm/dock/dock_types.h" 9 #include "ash/wm/window_resizer.h" 10 #include "base/compiler_specific.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "base/memory/weak_ptr.h" 13 14 namespace gfx { 15 class Point; 16 class Rect; 17 } 18 19 namespace aura { 20 class RootWindow; 21 } 22 23 namespace ash { 24 class DockedWindowLayoutManager; 25 26 // DockWindowResizer is used by ToplevelWindowEventFilter to handle dragging, 27 // moving or resizing of a window while it is docked to the side of a screen. 28 class ASH_EXPORT DockedWindowResizer : public WindowResizer { 29 public: 30 virtual ~DockedWindowResizer(); 31 32 // Creates a new DockWindowResizer. The caller takes ownership of the 33 // returned object. The ownership of |next_window_resizer| is taken by the 34 // returned object. Returns NULL if not resizable. 35 static DockedWindowResizer* Create(WindowResizer* next_window_resizer, 36 wm::WindowState* window_state); 37 38 // WindowResizer: 39 virtual void Drag(const gfx::Point& location, int event_flags) OVERRIDE; 40 virtual void CompleteDrag() OVERRIDE; 41 virtual void RevertDrag() OVERRIDE; 42 43 private: 44 // Creates DockWindowResizer that adds the ability to attach / detach 45 // windows to / from the dock. This object takes ownership of 46 // |next_window_resizer|. 47 DockedWindowResizer(WindowResizer* next_window_resizer, 48 wm::WindowState* window_state); 49 50 // If the provided window bounds should snap to the side of a screen, 51 // returns the offset that gives the necessary adjustment to snap. 52 void MaybeSnapToEdge(const gfx::Rect& bounds, gfx::Point* offset); 53 54 // Tracks the window's initial position and attachment at the start of a drag 55 // and informs the DockLayoutManager that a drag has started if necessary. 56 void StartedDragging(); 57 58 // Informs the DockLayoutManager that the drag is complete if it was informed 59 // of the drag start. |move_result| specifies if the drag was completed or 60 // reverted. 61 void FinishedDragging(aura::client::WindowMoveResult move_result); 62 63 // Reparents dragged window as necessary to the docked container or back to 64 // workspace at the end of the drag. Calculates and returns action taken that 65 // can be reported in UMA stats. |is_resized| reports if the window is merely 66 // being resized rather than repositioned. |attached_panel| is necessary to 67 // avoid docking panels that have been attached to the launcher shelf at the 68 // end of the drag. 69 DockedAction MaybeReparentWindowOnDragCompletion(bool is_resized, 70 bool is_attached_panel); 71 72 gfx::Point last_location_; 73 74 // Wraps a window resizer and adds detaching / reattaching during drags. 75 scoped_ptr<WindowResizer> next_window_resizer_; 76 77 // Dock container window. 78 DockedWindowLayoutManager* dock_layout_; 79 DockedWindowLayoutManager* initial_dock_layout_; 80 81 // Set to true once Drag() is invoked and the bounds of the window change. 82 bool did_move_or_resize_; 83 84 // Set to true if the window that is being dragged was docked before drag. 85 bool was_docked_; 86 87 // True if the dragged window is docked during the drag. 88 bool is_docked_; 89 90 // True if the dragged window had |bounds_changed_by_user| before the drag. 91 // Cleared whenever the target window gets dragged outside of the docked area. 92 bool was_bounds_changed_by_user_; 93 94 base::WeakPtrFactory<DockedWindowResizer> weak_ptr_factory_; 95 96 DISALLOW_COPY_AND_ASSIGN(DockedWindowResizer); 97 }; 98 99 } // namespace ash 100 101 #endif // ASH_WM_DOCK_DOCK_WINDOW_RESIZER_H_ 102
