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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_MUS_WS_MOVE_LOOP_H_ | 5 #ifndef COMPONENTS_MUS_EXAMPLE_WM_MOVE_LOOP_H_ |
6 #define COMPONENTS_MUS_WS_MOVE_LOOP_H_ | 6 #define COMPONENTS_MUS_EXAMPLE_WM_MOVE_LOOP_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
10 #include "components/mus/ws/server_window_observer.h" | 10 #include "components/mus/public/cpp/window_observer.h" |
11 #include "ui/gfx/geometry/point.h" | 11 #include "ui/gfx/geometry/point.h" |
12 #include "ui/gfx/geometry/rect.h" | 12 #include "ui/gfx/geometry/rect.h" |
13 #include "ui/mojo/events/input_events.mojom.h" | 13 #include "ui/mojo/events/input_events.mojom.h" |
14 | 14 |
15 namespace mus { | 15 // MoveLoop is responsible for moving/resizing windows. |
16 namespace ws { | 16 class MoveLoop : public mus::WindowObserver { |
17 | |
18 class ServerWindow; | |
19 | |
20 // MoveLoop is responsible for moving/resizing windows. EventDispatcher | |
21 // attempts to create a MoveLoop on every POINTER_DOWN event. Once a MoveLoop | |
22 // is created it is fed events until an event is received that stops the loop. | |
23 class MoveLoop : public ServerWindowObserver { | |
24 public: | 17 public: |
25 enum MoveResult { | 18 enum MoveResult { |
26 // The move is still ongoing. | 19 // The move is still ongoing. |
27 CONTINUE, | 20 CONTINUE, |
28 | 21 |
29 // The move is done and the MoveLoop should be destroyed. | 22 // The move is done and the MoveLoop should be destroyed. |
30 DONE, | 23 DONE, |
31 }; | 24 }; |
32 | 25 |
33 ~MoveLoop() override; | 26 ~MoveLoop() override; |
34 | 27 |
35 // If a move/resize loop should occur for the specified parameters creates | 28 // If a move/resize loop should occur for the specified parameters creates |
36 // and returns a new MoveLoop. All events should be funneled to the MoveLoop | 29 // and returns a new MoveLoop. All events should be funneled to the MoveLoop |
37 // until done (Move()). | 30 // until done (Move()). |
38 static scoped_ptr<MoveLoop> Create(ServerWindow* target, | 31 static scoped_ptr<MoveLoop> Create(mus::Window* target, |
39 const mojo::Event& event); | 32 const mojo::Event& event); |
40 | 33 |
41 // Processes an event for a move/resize loop. | 34 // Processes an event for a move/resize loop. |
42 MoveResult Move(const mojo::Event& event); | 35 MoveResult Move(const mojo::Event& event); |
43 | 36 |
44 private: | 37 private: |
45 MoveLoop(ServerWindow* target, const mojo::Event& event); | 38 MoveLoop(mus::Window* target, const mojo::Event& event); |
46 | 39 |
47 // Does the actual move/resize. | 40 // Does the actual move/resize. |
48 void MoveImpl(const mojo::Event& event); | 41 void MoveImpl(const mojo::Event& event); |
49 | 42 |
50 // Cancels the loop. This sets |target_| to null and removes the observer. | 43 // Cancels the loop. This sets |target_| to null and removes the observer. |
51 // After this the MoveLoop is still ongoing and won't stop until the | 44 // After this the MoveLoop is still ongoing and won't stop until the |
52 // appropriate event is received. | 45 // appropriate event is received. |
53 void Cancel(); | 46 void Cancel(); |
54 | 47 |
55 void Revert(); | 48 void Revert(); |
56 | 49 |
57 // ServerWindowObserver: | 50 // mus::WindowObserver: |
58 void OnWindowHierarchyChanged(ServerWindow* window, | 51 void OnTreeChanged(const TreeChangeParams& params) override; |
59 ServerWindow* new_parent, | 52 void OnWindowBoundsChanged(mus::Window* window, |
60 ServerWindow* old_parent) override; | 53 const mojo::Rect& old_bounds, |
61 void OnWindowBoundsChanged(ServerWindow* window, | 54 const mojo::Rect& new_bounds) override; |
62 const gfx::Rect& old_bounds, | 55 void OnWindowVisibilityChanged(mus::Window* window) override; |
63 const gfx::Rect& new_bounds) override; | |
64 void OnWindowVisibilityChanged(ServerWindow* window) override; | |
65 | 56 |
66 // The window this MoveLoop is acting on. |target_| is set to null if the | 57 // The window this MoveLoop is acting on. |target_| is set to null if the |
67 // window unexpectedly changes while the move is in progress. | 58 // window unexpectedly changes while the move is in progress. |
68 ServerWindow* target_; | 59 mus::Window* target_; |
69 | 60 |
70 // The id of the pointer that triggered the move. | 61 // The id of the pointer that triggered the move. |
71 const int32_t pointer_id_; | 62 const int32_t pointer_id_; |
72 | 63 |
73 // Location of the event (in screen coordinates) that triggered the move. | 64 // Location of the event (in screen coordinates) that triggered the move. |
74 const gfx::Point initial_event_screen_location_; | 65 const gfx::Point initial_event_screen_location_; |
75 | 66 |
76 // Original bounds of the window. | 67 // Original bounds of the window. |
77 const gfx::Rect initial_window_bounds_; | 68 const gfx::Rect initial_window_bounds_; |
78 | 69 |
79 // Set to true when MoveLoop changes the bounds of |target_|. The move is | 70 // Set to true when MoveLoop changes the bounds of |target_|. The move is |
80 // canceled if the bounds change unexpectedly during the move. | 71 // canceled if the bounds change unexpectedly during the move. |
81 bool changing_bounds_; | 72 bool changing_bounds_; |
82 | 73 |
83 DISALLOW_COPY_AND_ASSIGN(MoveLoop); | 74 DISALLOW_COPY_AND_ASSIGN(MoveLoop); |
84 }; | 75 }; |
85 | 76 |
86 } // namespace ws | 77 #endif // COMPONENTS_MUS_EXAMPLE_WM_MOVE_LOOP_H_ |
87 } // namespace mus | |
88 | |
89 #endif // COMPONENTS_MUS_WS_MOVE_LOOP_H_ | |
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