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Issue 641113004: ozone: evdev: Factor keyboard into KeyboardEvdev (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: std::bitset Created 6 years, 2 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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/ozone/evdev/key_event_converter_evdev.h" 5 #include "ui/events/ozone/evdev/key_event_converter_evdev.h"
6 6
7 #include <errno.h> 7 #include <errno.h>
8 #include <linux/input.h> 8 #include <linux/input.h>
9 9
10 #include "base/message_loop/message_loop.h" 10 #include "base/message_loop/message_loop.h"
11 #include "ui/events/event.h" 11 #include "ui/events/event.h"
12 #include "ui/events/keycodes/dom4/keycode_converter.h" 12 #include "ui/events/keycodes/dom4/keycode_converter.h"
13 #include "ui/events/keycodes/keyboard_codes.h" 13 #include "ui/events/keycodes/keyboard_codes.h"
14 #include "ui/events/ozone/evdev/event_modifiers_evdev.h" 14 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
15 15
16 namespace ui { 16 namespace ui {
17 17
18 namespace { 18 namespace {
19 19
20 const int kXkbKeycodeOffset = 8;
21
22 ui::KeyboardCode KeyboardCodeFromButton(unsigned int code) {
23 static const ui::KeyboardCode kLinuxBaseKeyMap[] = {
24 ui::VKEY_UNKNOWN, // KEY_RESERVED
25 ui::VKEY_ESCAPE, // KEY_ESC
26 ui::VKEY_1, // KEY_1
27 ui::VKEY_2, // KEY_2
28 ui::VKEY_3, // KEY_3
29 ui::VKEY_4, // KEY_4
30 ui::VKEY_5, // KEY_5
31 ui::VKEY_6, // KEY_6
32 ui::VKEY_7, // KEY_7
33 ui::VKEY_8, // KEY_8
34 ui::VKEY_9, // KEY_9
35 ui::VKEY_0, // KEY_0
36 ui::VKEY_OEM_MINUS, // KEY_MINUS
37 ui::VKEY_OEM_PLUS, // KEY_EQUAL
38 ui::VKEY_BACK, // KEY_BACKSPACE
39 ui::VKEY_TAB, // KEY_TAB
40 ui::VKEY_Q, // KEY_Q
41 ui::VKEY_W, // KEY_W
42 ui::VKEY_E, // KEY_E
43 ui::VKEY_R, // KEY_R
44 ui::VKEY_T, // KEY_T
45 ui::VKEY_Y, // KEY_Y
46 ui::VKEY_U, // KEY_U
47 ui::VKEY_I, // KEY_I
48 ui::VKEY_O, // KEY_O
49 ui::VKEY_P, // KEY_P
50 ui::VKEY_OEM_4, // KEY_LEFTBRACE
51 ui::VKEY_OEM_6, // KEY_RIGHTBRACE
52 ui::VKEY_RETURN, // KEY_ENTER
53 ui::VKEY_CONTROL, // KEY_LEFTCTRL
54 ui::VKEY_A, // KEY_A
55 ui::VKEY_S, // KEY_S
56 ui::VKEY_D, // KEY_D
57 ui::VKEY_F, // KEY_F
58 ui::VKEY_G, // KEY_G
59 ui::VKEY_H, // KEY_H
60 ui::VKEY_J, // KEY_J
61 ui::VKEY_K, // KEY_K
62 ui::VKEY_L, // KEY_L
63 ui::VKEY_OEM_1, // KEY_SEMICOLON
64 ui::VKEY_OEM_7, // KEY_APOSTROPHE
65 ui::VKEY_OEM_3, // KEY_GRAVE
66 ui::VKEY_SHIFT, // KEY_LEFTSHIFT
67 ui::VKEY_OEM_5, // KEY_BACKSLASH
68 ui::VKEY_Z, // KEY_Z
69 ui::VKEY_X, // KEY_X
70 ui::VKEY_C, // KEY_C
71 ui::VKEY_V, // KEY_V
72 ui::VKEY_B, // KEY_B
73 ui::VKEY_N, // KEY_N
74 ui::VKEY_M, // KEY_M
75 ui::VKEY_OEM_COMMA, // KEY_COMMA
76 ui::VKEY_OEM_PERIOD, // KEY_DOT
77 ui::VKEY_OEM_2, // KEY_SLASH
78 ui::VKEY_SHIFT, // KEY_RIGHTSHIFT
79 ui::VKEY_MULTIPLY, // KEY_KPASTERISK
80 ui::VKEY_MENU, // KEY_LEFTALT
81 ui::VKEY_SPACE, // KEY_SPACE
82 ui::VKEY_CAPITAL, // KEY_CAPSLOCK
83 ui::VKEY_F1, // KEY_F1
84 ui::VKEY_F2, // KEY_F2
85 ui::VKEY_F3, // KEY_F3
86 ui::VKEY_F4, // KEY_F4
87 ui::VKEY_F5, // KEY_F5
88 ui::VKEY_F6, // KEY_F6
89 ui::VKEY_F7, // KEY_F7
90 ui::VKEY_F8, // KEY_F8
91 ui::VKEY_F9, // KEY_F9
92 ui::VKEY_F10, // KEY_F10
93 ui::VKEY_NUMLOCK, // KEY_NUMLOCK
94 ui::VKEY_SCROLL, // KEY_SCROLLLOCK
95 ui::VKEY_NUMPAD7, // KEY_KP7
96 ui::VKEY_NUMPAD8, // KEY_KP8
97 ui::VKEY_NUMPAD9, // KEY_KP9
98 ui::VKEY_SUBTRACT, // KEY_KPMINUS
99 ui::VKEY_NUMPAD4, // KEY_KP4
100 ui::VKEY_NUMPAD5, // KEY_KP5
101 ui::VKEY_NUMPAD6, // KEY_KP6
102 ui::VKEY_ADD, // KEY_KPPLUS
103 ui::VKEY_NUMPAD1, // KEY_KP1
104 ui::VKEY_NUMPAD2, // KEY_KP2
105 ui::VKEY_NUMPAD3, // KEY_KP3
106 ui::VKEY_NUMPAD0, // KEY_KP0
107 ui::VKEY_DECIMAL, // KEY_KPDOT
108 ui::VKEY_UNKNOWN, // (unassigned)
109 ui::VKEY_DBE_DBCSCHAR, // KEY_ZENKAKUHANKAKU
110 ui::VKEY_OEM_102, // KEY_102ND
111 ui::VKEY_F11, // KEY_F11
112 ui::VKEY_F12, // KEY_F12
113 ui::VKEY_UNKNOWN, // KEY_RO
114 ui::VKEY_UNKNOWN, // KEY_KATAKANA
115 ui::VKEY_UNKNOWN, // KEY_HIRAGANA
116 ui::VKEY_CONVERT, // KEY_HENKAN
117 ui::VKEY_UNKNOWN, // KEY_KATAKANAHIRAGANA
118 ui::VKEY_NONCONVERT, // KEY_MUHENKAN
119 ui::VKEY_UNKNOWN, // KEY_KPJPCOMMA
120 ui::VKEY_RETURN, // KEY_KPENTER
121 ui::VKEY_CONTROL, // KEY_RIGHTCTRL
122 ui::VKEY_DIVIDE, // KEY_KPSLASH
123 ui::VKEY_PRINT, // KEY_SYSRQ
124 ui::VKEY_MENU, // KEY_RIGHTALT
125 ui::VKEY_RETURN, // KEY_LINEFEED
126 ui::VKEY_HOME, // KEY_HOME
127 ui::VKEY_UP, // KEY_UP
128 ui::VKEY_PRIOR, // KEY_PAGEUP
129 ui::VKEY_LEFT, // KEY_LEFT
130 ui::VKEY_RIGHT, // KEY_RIGHT
131 ui::VKEY_END, // KEY_END
132 ui::VKEY_DOWN, // KEY_DOWN
133 ui::VKEY_NEXT, // KEY_PAGEDOWN
134 ui::VKEY_INSERT, // KEY_INSERT
135 ui::VKEY_DELETE, // KEY_DELETE
136 ui::VKEY_UNKNOWN, // KEY_MACRO
137 ui::VKEY_VOLUME_MUTE, // KEY_MUTE
138 ui::VKEY_VOLUME_DOWN, // KEY_VOLUMEDOWN
139 ui::VKEY_VOLUME_UP, // KEY_VOLUMEUP
140 ui::VKEY_POWER, // KEY_POWER
141 ui::VKEY_OEM_PLUS, // KEY_KPEQUAL
142 ui::VKEY_UNKNOWN, // KEY_KPPLUSMINUS
143 ui::VKEY_PAUSE, // KEY_PAUSE
144 ui::VKEY_MEDIA_LAUNCH_APP1, // KEY_SCALE
145 ui::VKEY_DECIMAL, // KEY_KPCOMMA
146 ui::VKEY_HANGUL, // KEY_HANGEUL
147 ui::VKEY_HANJA, // KEY_HANJA
148 ui::VKEY_UNKNOWN, // KEY_YEN
149 ui::VKEY_LWIN, // KEY_LEFTMETA
150 ui::VKEY_RWIN, // KEY_RIGHTMETA
151 ui::VKEY_APPS, // KEY_COMPOSE
152 };
153
154 if (code < arraysize(kLinuxBaseKeyMap))
155 return kLinuxBaseKeyMap[code];
156
157 LOG(ERROR) << "Unknown key code: " << code;
158 return ui::VKEY_UNKNOWN;
159 }
160
161 int ModifierFromButton(unsigned int code) {
162 switch (code) {
163 case KEY_CAPSLOCK:
164 return EVDEV_MODIFIER_CAPS_LOCK;
165 case KEY_LEFTSHIFT:
166 case KEY_RIGHTSHIFT:
167 return EVDEV_MODIFIER_SHIFT;
168 case KEY_LEFTCTRL:
169 case KEY_RIGHTCTRL:
170 return EVDEV_MODIFIER_CONTROL;
171 case KEY_LEFTALT:
172 case KEY_RIGHTALT:
173 return EVDEV_MODIFIER_ALT;
174 case BTN_LEFT:
175 return EVDEV_MODIFIER_LEFT_MOUSE_BUTTON;
176 case BTN_MIDDLE:
177 return EVDEV_MODIFIER_MIDDLE_MOUSE_BUTTON;
178 case BTN_RIGHT:
179 return EVDEV_MODIFIER_RIGHT_MOUSE_BUTTON;
180 case KEY_LEFTMETA:
181 case KEY_RIGHTMETA:
182 return EVDEV_MODIFIER_COMMAND;
183 default:
184 return EVDEV_MODIFIER_NONE;
185 }
186 }
187
188 bool IsLockButton(unsigned int code) { return code == KEY_CAPSLOCK; }
189
190 } // namespace 20 } // namespace
191 21
192 KeyEventConverterEvdev::KeyEventConverterEvdev( 22 KeyEventConverterEvdev::KeyEventConverterEvdev(int fd,
193 int fd, 23 base::FilePath path,
194 base::FilePath path, 24 int id,
195 int id, 25 KeyboardEvdev* keyboard)
196 EventModifiersEvdev* modifiers, 26 : EventConverterEvdev(fd, path, id), keyboard_(keyboard) {
197 const EventDispatchCallback& callback)
198 : EventConverterEvdev(fd, path, id),
199 callback_(callback),
200 modifiers_(modifiers) {
201 // TODO(spang): Initialize modifiers using EVIOCGKEY.
202 } 27 }
203 28
204 KeyEventConverterEvdev::~KeyEventConverterEvdev() { 29 KeyEventConverterEvdev::~KeyEventConverterEvdev() {
205 Stop(); 30 Stop();
206 close(fd_); 31 close(fd_);
207 } 32 }
208 33
209 void KeyEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) { 34 void KeyEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) {
210 input_event inputs[4]; 35 input_event inputs[4];
211 ssize_t read_size = read(fd, inputs, sizeof(inputs)); 36 ssize_t read_size = read(fd, inputs, sizeof(inputs));
212 if (read_size < 0) { 37 if (read_size < 0) {
213 if (errno == EINTR || errno == EAGAIN) 38 if (errno == EINTR || errno == EAGAIN)
214 return; 39 return;
215 if (errno != ENODEV) 40 if (errno != ENODEV)
216 PLOG(ERROR) << "error reading device " << path_.value(); 41 PLOG(ERROR) << "error reading device " << path_.value();
217 Stop(); 42 Stop();
218 return; 43 return;
219 } 44 }
220 45
221 DCHECK_EQ(read_size % sizeof(*inputs), 0u); 46 DCHECK_EQ(read_size % sizeof(*inputs), 0u);
222 ProcessEvents(inputs, read_size / sizeof(*inputs)); 47 ProcessEvents(inputs, read_size / sizeof(*inputs));
223 } 48 }
224 49
225 void KeyEventConverterEvdev::ProcessEvents(const input_event* inputs, 50 void KeyEventConverterEvdev::ProcessEvents(const input_event* inputs,
226 int count) { 51 int count) {
227 for (int i = 0; i < count; ++i) { 52 for (int i = 0; i < count; ++i) {
228 const input_event& input = inputs[i]; 53 const input_event& input = inputs[i];
229 if (input.type == EV_KEY) { 54 if (input.type == EV_KEY) {
230 ConvertKeyEvent(input.code, input.value); 55 keyboard_->OnKeyChange(input.code, input.value != 0);
231 } else if (input.type == EV_SYN) { 56 } else if (input.type == EV_SYN) {
232 // TODO(sadrul): Handle this case appropriately. 57 // TODO(sadrul): Handle this case appropriately.
233 } 58 }
234 } 59 }
235 } 60 }
236 61
237 void KeyEventConverterEvdev::ConvertKeyEvent(int key, int value) {
238 int down = (value != 0);
239 int repeat = (value == 2);
240 int modifier = ModifierFromButton(key);
241 ui::KeyboardCode code = KeyboardCodeFromButton(key);
242
243 if (!repeat && (modifier != EVDEV_MODIFIER_NONE)) {
244 if (IsLockButton(key)) {
245 // Locking modifier keys: CapsLock.
246 modifiers_->UpdateModifierLock(modifier, down);
247 } else {
248 // Regular modifier keys: Shift, Ctrl, Alt, etc.
249 modifiers_->UpdateModifier(modifier, down);
250 }
251 }
252
253 int flags = modifiers_->GetModifierFlags();
254
255 KeyEvent key_event(
256 down ? ET_KEY_PRESSED : ET_KEY_RELEASED,
257 code,
258 KeycodeConverter::NativeKeycodeToCode(key + kXkbKeycodeOffset),
259 flags);
260 callback_.Run(&key_event);
261 }
262
263 } // namespace ui 62 } // namespace ui
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