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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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 #include "ui/events/event_constants.h" | 5 #include "ui/events/event_constants.h" |
6 | 6 |
7 #include <cmath> | 7 #include <cmath> |
8 #include <string.h> | 8 #include <string.h> |
9 #include <X11/extensions/XInput.h> | 9 #include <X11/extensions/XInput.h> |
10 #include <X11/extensions/XInput2.h> | 10 #include <X11/extensions/XInput2.h> |
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141 flags |= ui::EF_ALTGR_DOWN; | 141 flags |= ui::EF_ALTGR_DOWN; |
142 if (state & Button1Mask) | 142 if (state & Button1Mask) |
143 flags |= ui::EF_LEFT_MOUSE_BUTTON; | 143 flags |= ui::EF_LEFT_MOUSE_BUTTON; |
144 if (state & Button2Mask) | 144 if (state & Button2Mask) |
145 flags |= ui::EF_MIDDLE_MOUSE_BUTTON; | 145 flags |= ui::EF_MIDDLE_MOUSE_BUTTON; |
146 if (state & Button3Mask) | 146 if (state & Button3Mask) |
147 flags |= ui::EF_RIGHT_MOUSE_BUTTON; | 147 flags |= ui::EF_RIGHT_MOUSE_BUTTON; |
148 return flags; | 148 return flags; |
149 } | 149 } |
150 | 150 |
151 int GetEventFlagsFromXKeyEvent(XEvent* xevent) { | |
152 DCHECK(xevent->type == KeyPress || xevent->type == KeyRelease); | |
153 | |
154 #if defined(OS_CHROMEOS) | |
155 const int ime_fabricated_flag = 0; | |
156 #else | |
157 // XIM fabricates key events for the character compositions by XK_Multi_key. | |
158 // For example, when a user hits XK_Multi_key, XK_apostrophe, and XK_e in | |
159 // order to input "é", then XIM generates a key event with keycode=0 and | |
160 // state=0 for the composition, and the sequence of X11 key events will be | |
161 // XK_Multi_key, XK_apostrophe, **NoSymbol**, and XK_e. | |
162 // | |
163 // We have to send these fabricated key events to XIM so it can correctly | |
164 // handle the character compositions. | |
165 const bool fabricated_by_xim = | |
166 xevent->xkey.keycode == 0 && xevent->xkey.state == 0; | |
167 const int ime_fabricated_flag = | |
168 fabricated_by_xim ? ui::EF_IME_FABRICATED_KEY : 0; | |
169 #endif | |
170 | |
171 return GetEventFlagsFromXState(xevent->xkey.state) | | |
172 (IsKeypadKey(XLookupKeysym(&xevent->xkey, 0)) ? ui::EF_NUMPAD_KEY : 0) | | |
173 ime_fabricated_flag; | |
174 } | |
175 | |
176 // Get the event flag for the button in XButtonEvent. During a ButtonPress | 151 // Get the event flag for the button in XButtonEvent. During a ButtonPress |
177 // event, |state| in XButtonEvent does not include the button that has just been | 152 // event, |state| in XButtonEvent does not include the button that has just been |
178 // pressed. Instead |state| contains flags for the buttons (if any) that had | 153 // pressed. Instead |state| contains flags for the buttons (if any) that had |
179 // already been pressed before the current button, and |button| stores the most | 154 // already been pressed before the current button, and |button| stores the most |
180 // current pressed button. So, if you press down left mouse button, and while | 155 // current pressed button. So, if you press down left mouse button, and while |
181 // pressing it down, press down the right mouse button, then for the latter | 156 // pressing it down, press down the right mouse button, then for the latter |
182 // event, |state| would have Button1Mask set but not Button3Mask, and |button| | 157 // event, |state| would have Button1Mask set but not Button3Mask, and |button| |
183 // would be 3. | 158 // would be 3. |
184 int GetEventFlagsForButton(int button) { | 159 int GetEventFlagsForButton(int button) { |
185 switch (button) { | 160 switch (button) { |
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698 | 673 |
699 bool IsNaturalScrollEnabled() { | 674 bool IsNaturalScrollEnabled() { |
700 return DeviceDataManager::GetInstance()->natural_scroll_enabled(); | 675 return DeviceDataManager::GetInstance()->natural_scroll_enabled(); |
701 } | 676 } |
702 | 677 |
703 bool IsTouchpadEvent(const base::NativeEvent& event) { | 678 bool IsTouchpadEvent(const base::NativeEvent& event) { |
704 return DeviceDataManager::GetInstance()->IsTouchpadXInputEvent(event); | 679 return DeviceDataManager::GetInstance()->IsTouchpadXInputEvent(event); |
705 } | 680 } |
706 | 681 |
707 } // namespace ui | 682 } // namespace ui |
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