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 #include "ash/wm/ash_native_cursor_manager.h"
6
7 #include "ash/display/cursor_window_controller.h"
8 #include "ash/display/display_controller.h"
9 #include "ash/shell.h"
10 #include "base/logging.h"
11 #include "ui/aura/env.h"
12 #include "ui/aura/window_event_dispatcher.h"
13 #include "ui/aura/window_tree_host.h"
14 #include "ui/base/cursor/cursor.h"
15 #include "ui/base/cursor/image_cursors.h"
16 #include "ui/base/layout.h"
17
18 namespace ash {
19 namespace {
20
SetCursorOnAllRootWindows(gfx::NativeCursor cursor)21 void SetCursorOnAllRootWindows(gfx::NativeCursor cursor) {
22 aura::Window::Windows root_windows =
23 Shell::GetInstance()->GetAllRootWindows();
24 for (aura::Window::Windows::iterator iter = root_windows.begin();
25 iter != root_windows.end(); ++iter)
26 (*iter)->GetHost()->SetCursor(cursor);
27 #if defined(OS_CHROMEOS)
28 Shell::GetInstance()->display_controller()->
29 cursor_window_controller()->SetCursor(cursor);
30 #endif
31 }
32
NotifyCursorVisibilityChange(bool visible)33 void NotifyCursorVisibilityChange(bool visible) {
34 aura::Window::Windows root_windows =
35 Shell::GetInstance()->GetAllRootWindows();
36 for (aura::Window::Windows::iterator iter = root_windows.begin();
37 iter != root_windows.end(); ++iter)
38 (*iter)->GetHost()->OnCursorVisibilityChanged(visible);
39 #if defined(OS_CHROMEOS)
40 Shell::GetInstance()->display_controller()->cursor_window_controller()->
41 SetVisibility(visible);
42 #endif
43 }
44
NotifyMouseEventsEnableStateChange(bool enabled)45 void NotifyMouseEventsEnableStateChange(bool enabled) {
46 aura::Window::Windows root_windows =
47 Shell::GetInstance()->GetAllRootWindows();
48 for (aura::Window::Windows::iterator iter = root_windows.begin();
49 iter != root_windows.end(); ++iter)
50 (*iter)->GetHost()->dispatcher()->OnMouseEventsEnableStateChanged(enabled);
51 // Mirror window never process events.
52 }
53
54 } // namespace
55
AshNativeCursorManager()56 AshNativeCursorManager::AshNativeCursorManager()
57 : native_cursor_enabled_(true),
58 image_cursors_(new ui::ImageCursors) {
59 }
60
~AshNativeCursorManager()61 AshNativeCursorManager::~AshNativeCursorManager() {
62 }
63
64
SetNativeCursorEnabled(bool enabled)65 void AshNativeCursorManager::SetNativeCursorEnabled(bool enabled) {
66 native_cursor_enabled_ = enabled;
67
68 ::wm::CursorManager* cursor_manager =
69 Shell::GetInstance()->cursor_manager();
70 SetCursor(cursor_manager->GetCursor(), cursor_manager);
71 }
72
SetDisplay(const gfx::Display & display,::wm::NativeCursorManagerDelegate * delegate)73 void AshNativeCursorManager::SetDisplay(
74 const gfx::Display& display,
75 ::wm::NativeCursorManagerDelegate* delegate) {
76 DCHECK(display.is_valid());
77 // Use the platform's device scale factor instead of the display's, which
78 // might have been adjusted for the UI scale.
79 const float original_scale = Shell::GetInstance()->display_manager()->
80 GetDisplayInfo(display.id()).device_scale_factor();
81 #if defined(OS_CHROMEOS)
82 // And use the nearest resource scale factor.
83 const float cursor_scale = ui::GetScaleForScaleFactor(
84 ui::GetSupportedScaleFactor(original_scale));
85 #else
86 // TODO(oshima): crbug.com/143619
87 const float cursor_scale = original_scale;
88 #endif
89 if (image_cursors_->SetDisplay(display, cursor_scale))
90 SetCursor(delegate->GetCursor(), delegate);
91 #if defined(OS_CHROMEOS)
92 Shell::GetInstance()->display_controller()->cursor_window_controller()->
93 SetDisplay(display);
94 #endif
95 }
96
SetCursor(gfx::NativeCursor cursor,::wm::NativeCursorManagerDelegate * delegate)97 void AshNativeCursorManager::SetCursor(
98 gfx::NativeCursor cursor,
99 ::wm::NativeCursorManagerDelegate* delegate) {
100 if (native_cursor_enabled_) {
101 image_cursors_->SetPlatformCursor(&cursor);
102 } else {
103 gfx::NativeCursor invisible_cursor(ui::kCursorNone);
104 image_cursors_->SetPlatformCursor(&invisible_cursor);
105 if (cursor == ui::kCursorCustom) {
106 cursor = invisible_cursor;
107 } else {
108 cursor.SetPlatformCursor(invisible_cursor.platform());
109 }
110 }
111 cursor.set_device_scale_factor(image_cursors_->GetScale());
112
113 delegate->CommitCursor(cursor);
114
115 if (delegate->IsCursorVisible())
116 SetCursorOnAllRootWindows(cursor);
117 }
118
SetCursorSet(ui::CursorSetType cursor_set,::wm::NativeCursorManagerDelegate * delegate)119 void AshNativeCursorManager::SetCursorSet(
120 ui::CursorSetType cursor_set,
121 ::wm::NativeCursorManagerDelegate* delegate) {
122 image_cursors_->SetCursorSet(cursor_set);
123 delegate->CommitCursorSet(cursor_set);
124
125 // Sets the cursor to reflect the scale change immediately.
126 if (delegate->IsCursorVisible())
127 SetCursor(delegate->GetCursor(), delegate);
128
129 #if defined(OS_CHROMEOS)
130 Shell::GetInstance()->display_controller()->cursor_window_controller()->
131 SetCursorSet(cursor_set);
132 #endif
133 }
134
SetVisibility(bool visible,::wm::NativeCursorManagerDelegate * delegate)135 void AshNativeCursorManager::SetVisibility(
136 bool visible,
137 ::wm::NativeCursorManagerDelegate* delegate) {
138 delegate->CommitVisibility(visible);
139
140 if (visible) {
141 SetCursor(delegate->GetCursor(), delegate);
142 } else {
143 gfx::NativeCursor invisible_cursor(ui::kCursorNone);
144 image_cursors_->SetPlatformCursor(&invisible_cursor);
145 SetCursorOnAllRootWindows(invisible_cursor);
146 }
147
148 NotifyCursorVisibilityChange(visible);
149 }
150
SetMouseEventsEnabled(bool enabled,::wm::NativeCursorManagerDelegate * delegate)151 void AshNativeCursorManager::SetMouseEventsEnabled(
152 bool enabled,
153 ::wm::NativeCursorManagerDelegate* delegate) {
154 delegate->CommitMouseEventsEnabled(enabled);
155
156 if (enabled) {
157 aura::Env::GetInstance()->set_last_mouse_location(
158 disabled_cursor_location_);
159 } else {
160 disabled_cursor_location_ = aura::Env::GetInstance()->last_mouse_location();
161 }
162
163 SetVisibility(delegate->IsCursorVisible(), delegate);
164 NotifyMouseEventsEnableStateChange(enabled);
165 }
166
167 } // namespace ash
168