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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 #include "ui/views/corewm/cursor_manager.h" | |
6 | |
7 #include "base/logging.h" | |
8 #include "ui/aura/client/cursor_client_observer.h" | |
9 #include "ui/views/corewm/native_cursor_manager.h" | |
10 #include "ui/views/corewm/native_cursor_manager_delegate.h" | |
11 | |
12 namespace views { | |
13 namespace corewm { | |
14 | |
15 namespace internal { | |
16 | |
17 // Represents the cursor state which is composed of cursor type, visibility, and | |
18 // mouse events enable state. When mouse events are disabled, the cursor is | |
19 // always invisible. | |
20 class CursorState { | |
21 public: | |
22 CursorState() | |
23 : cursor_(ui::kCursorNone), | |
24 visible_(true), | |
25 scale_(1.f), | |
26 cursor_set_(ui::CURSOR_SET_NORMAL), | |
27 mouse_events_enabled_(true), | |
28 visible_on_mouse_events_enabled_(true) { | |
29 } | |
30 | |
31 gfx::NativeCursor cursor() const { return cursor_; } | |
32 void set_cursor(gfx::NativeCursor cursor) { cursor_ = cursor; } | |
33 | |
34 bool visible() const { return visible_; } | |
35 void SetVisible(bool visible) { | |
36 if (mouse_events_enabled_) | |
37 visible_ = visible; | |
38 // Ignores the call when mouse events disabled. | |
39 } | |
40 | |
41 float scale() const { return scale_; } | |
42 void set_scale(float scale) { | |
43 scale_ = scale; | |
44 } | |
45 | |
46 ui::CursorSetType cursor_set() const { return cursor_set_; } | |
47 void set_cursor_set(ui::CursorSetType cursor_set) { | |
48 cursor_set_ = cursor_set; | |
49 } | |
50 | |
51 bool mouse_events_enabled() const { return mouse_events_enabled_; } | |
52 void SetMouseEventsEnabled(bool enabled) { | |
53 if (mouse_events_enabled_ == enabled) | |
54 return; | |
55 mouse_events_enabled_ = enabled; | |
56 | |
57 // Restores the visibility when mouse events are enabled. | |
58 if (enabled) { | |
59 visible_ = visible_on_mouse_events_enabled_; | |
60 } else { | |
61 visible_on_mouse_events_enabled_ = visible_; | |
62 visible_ = false; | |
63 } | |
64 } | |
65 | |
66 private: | |
67 gfx::NativeCursor cursor_; | |
68 bool visible_; | |
69 float scale_; | |
70 ui::CursorSetType cursor_set_; | |
71 bool mouse_events_enabled_; | |
72 | |
73 // The visibility to set when mouse events are enabled. | |
74 bool visible_on_mouse_events_enabled_; | |
75 | |
76 DISALLOW_COPY_AND_ASSIGN(CursorState); | |
77 }; | |
78 | |
79 } // namespace internal | |
80 | |
81 CursorManager::CursorManager(scoped_ptr<NativeCursorManager> delegate) | |
82 : delegate_(delegate.Pass()), | |
83 cursor_lock_count_(0), | |
84 current_state_(new internal::CursorState), | |
85 state_on_unlock_(new internal::CursorState) { | |
86 } | |
87 | |
88 CursorManager::~CursorManager() { | |
89 } | |
90 | |
91 void CursorManager::SetCursor(gfx::NativeCursor cursor) { | |
92 state_on_unlock_->set_cursor(cursor); | |
93 if (cursor_lock_count_ == 0 && | |
94 GetCursor() != state_on_unlock_->cursor()) { | |
95 delegate_->SetCursor(state_on_unlock_->cursor(), this); | |
96 } | |
97 } | |
98 | |
99 gfx::NativeCursor CursorManager::GetCursor() const { | |
100 return current_state_->cursor(); | |
101 } | |
102 | |
103 void CursorManager::ShowCursor() { | |
104 state_on_unlock_->SetVisible(true); | |
105 if (cursor_lock_count_ == 0 && | |
106 IsCursorVisible() != state_on_unlock_->visible()) { | |
107 delegate_->SetVisibility(state_on_unlock_->visible(), this); | |
108 FOR_EACH_OBSERVER(aura::client::CursorClientObserver, observers_, | |
109 OnCursorVisibilityChanged(true)); | |
110 } | |
111 } | |
112 | |
113 void CursorManager::HideCursor() { | |
114 state_on_unlock_->SetVisible(false); | |
115 if (cursor_lock_count_ == 0 && | |
116 IsCursorVisible() != state_on_unlock_->visible()) { | |
117 delegate_->SetVisibility(state_on_unlock_->visible(), this); | |
118 FOR_EACH_OBSERVER(aura::client::CursorClientObserver, observers_, | |
119 OnCursorVisibilityChanged(false)); | |
120 } | |
121 } | |
122 | |
123 bool CursorManager::IsCursorVisible() const { | |
124 return current_state_->visible(); | |
125 } | |
126 | |
127 void CursorManager::SetScale(float scale) { | |
128 state_on_unlock_->set_scale(scale); | |
129 if (GetScale() != state_on_unlock_->scale()) | |
130 delegate_->SetScale(state_on_unlock_->scale(), this); | |
131 } | |
132 | |
133 float CursorManager::GetScale() const { | |
134 return current_state_->scale(); | |
135 } | |
136 | |
137 void CursorManager::SetCursorSet(ui::CursorSetType cursor_set) { | |
138 state_on_unlock_->set_cursor_set(cursor_set); | |
139 if (GetCursorSet() != state_on_unlock_->cursor_set()) | |
140 delegate_->SetCursorSet(state_on_unlock_->cursor_set(), this); | |
141 } | |
142 | |
143 ui::CursorSetType CursorManager::GetCursorSet() const { | |
144 return current_state_->cursor_set(); | |
145 } | |
146 | |
147 void CursorManager::EnableMouseEvents() { | |
148 state_on_unlock_->SetMouseEventsEnabled(true); | |
149 if (cursor_lock_count_ == 0 && | |
150 IsMouseEventsEnabled() != state_on_unlock_->mouse_events_enabled()) { | |
151 delegate_->SetMouseEventsEnabled(state_on_unlock_->mouse_events_enabled(), | |
152 this); | |
153 } | |
154 } | |
155 | |
156 void CursorManager::DisableMouseEvents() { | |
157 state_on_unlock_->SetMouseEventsEnabled(false); | |
158 if (cursor_lock_count_ == 0 && | |
159 IsMouseEventsEnabled() != state_on_unlock_->mouse_events_enabled()) { | |
160 delegate_->SetMouseEventsEnabled(state_on_unlock_->mouse_events_enabled(), | |
161 this); | |
162 } | |
163 } | |
164 | |
165 bool CursorManager::IsMouseEventsEnabled() const { | |
166 return current_state_->mouse_events_enabled(); | |
167 } | |
168 | |
169 void CursorManager::SetDisplay(const gfx::Display& display) { | |
170 delegate_->SetDisplay(display, this); | |
171 } | |
172 | |
173 void CursorManager::LockCursor() { | |
174 cursor_lock_count_++; | |
175 } | |
176 | |
177 void CursorManager::UnlockCursor() { | |
178 cursor_lock_count_--; | |
179 DCHECK_GE(cursor_lock_count_, 0); | |
180 if (cursor_lock_count_ > 0) | |
181 return; | |
182 | |
183 if (GetCursor() != state_on_unlock_->cursor()) { | |
184 delegate_->SetCursor(state_on_unlock_->cursor(), this); | |
185 } | |
186 if (IsMouseEventsEnabled() != state_on_unlock_->mouse_events_enabled()) { | |
187 delegate_->SetMouseEventsEnabled(state_on_unlock_->mouse_events_enabled(), | |
188 this); | |
189 } | |
190 if (IsCursorVisible() != state_on_unlock_->visible()) { | |
191 delegate_->SetVisibility(state_on_unlock_->visible(), | |
192 this); | |
193 } | |
194 } | |
195 | |
196 bool CursorManager::IsCursorLocked() const { | |
197 return cursor_lock_count_ > 0; | |
198 } | |
199 | |
200 void CursorManager::AddObserver( | |
201 aura::client::CursorClientObserver* observer) { | |
202 observers_.AddObserver(observer); | |
203 } | |
204 | |
205 void CursorManager::RemoveObserver( | |
206 aura::client::CursorClientObserver* observer) { | |
207 observers_.RemoveObserver(observer); | |
208 } | |
209 | |
210 void CursorManager::CommitCursor(gfx::NativeCursor cursor) { | |
211 current_state_->set_cursor(cursor); | |
212 } | |
213 | |
214 void CursorManager::CommitVisibility(bool visible) { | |
215 // TODO(tdanderson): Find a better place for this so we don't | |
216 // notify the observers more than is necessary. | |
217 FOR_EACH_OBSERVER(aura::client::CursorClientObserver, observers_, | |
218 OnCursorVisibilityChanged(visible)); | |
219 current_state_->SetVisible(visible); | |
220 } | |
221 | |
222 void CursorManager::CommitScale(float scale) { | |
223 current_state_->set_scale(scale); | |
224 } | |
225 | |
226 void CursorManager::CommitCursorSet(ui::CursorSetType cursor_set) { | |
227 current_state_->set_cursor_set(cursor_set); | |
228 } | |
229 | |
230 void CursorManager::CommitMouseEventsEnabled(bool enabled) { | |
231 current_state_->SetMouseEventsEnabled(enabled); | |
232 } | |
233 | |
234 } // namespace corewm | |
235 } // namespace views | |
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