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Pin Chrome's shortcut to the Win10 Start menu on install and OS upgrade.
[chromium-blink-merge.git] / ui / events / ozone / layout / xkb / xkb_keyboard_layout_engine.cc
blob3e393dc8b63c28b6fc02bc6c8b6fb37351ba97b3
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
3 // found in the LICENSE file.
4
5 #include "ui/events/ozone/layout/xkb/xkb_keyboard_layout_engine.h"
6
7 #include <xkbcommon/xkbcommon-names.h>
8
9 #include "base/bind.h"
10 #include "base/location.h"
11 #include "base/logging.h"
12 #include "base/single_thread_task_runner.h"
13 #include "base/task_runner.h"
14 #include "base/thread_task_runner_handle.h"
15 #include "base/threading/worker_pool.h"
16 #include "ui/events/event_constants.h"
17 #include "ui/events/keycodes/dom/dom_code.h"
18 #include "ui/events/keycodes/dom/dom_key.h"
19 #include "ui/events/keycodes/dom/keycode_converter.h"
20 #include "ui/events/keycodes/keyboard_code_conversion.h"
21 #include "ui/events/keycodes/keyboard_code_conversion_xkb.h"
22 #include "ui/events/ozone/layout/xkb/xkb_keyboard_code_conversion.h"
23
24 namespace ui {
25
26 namespace {
27
28 typedef base::Callback<void(const std::string&,
29 scoped_ptr<char, base::FreeDeleter>)>
30 LoadKeymapCallback;
31
32 KeyboardCode AlphanumericKeyboardCode(base::char16 character) {
33 // Plain ASCII letters and digits map directly to VKEY values.
34 if ((character >= '0') && (character <= '9'))
35 return static_cast<KeyboardCode>(VKEY_0 + character - '0');
36 if ((character >= 'a') && (character <= 'z'))
37 return static_cast<KeyboardCode>(VKEY_A + character - 'a');
38 if ((character >= 'A') && (character <= 'Z'))
39 return static_cast<KeyboardCode>(VKEY_A + character - 'A');
40 return VKEY_UNKNOWN;
41 }
42
43 // These tables map layout-dependent printable characters/codes
44 // to legacy Windows-based VKEY values.
45 //
46 // VKEYs are determined by the character produced from a DomCode without
47 // any modifiers, plus zero or more of the DomCode itself, the character
48 // produced with the Shift modifier, and the character produced with the
49 // AltGr modifier.
50
51 // A table of one or more PrintableSubEntry cases applies when the VKEY is
52 // not determined by the unmodified character value alone. Each such table
53 // corresponds to one unmodified character value. For an entry to match,
54 // the dom_code must match, and, if test_X is set, then the character for
55 // the key plus modifier X must also match.
56 struct PrintableSubEntry {
57 DomCode dom_code;
58 bool test_shift : 1;
59 bool test_altgr : 1;
60 base::char16 shift_character;
61 base::char16 altgr_character;
62 KeyboardCode key_code;
63 };
64
65 const base::char16 kNone = 0xFFFE;
66 const base::char16 kAny = 0xFFFF;
67
68 // U+0021 exclamation mark
69 const PrintableSubEntry kU0021[] = {
70 {DomCode::DIGIT1, 0, 0, kAny, kAny, VKEY_1},
71 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
72 {DomCode::SLASH, 0, 0, kAny, kAny, VKEY_OEM_8}};
73
74 // U+0022 quote
75 const PrintableSubEntry kU0022[] = {
76 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_2},
77 {DomCode::DIGIT3, 0, 0, kAny, kAny, VKEY_3}};
78
79 // U+0023 number sign
80 const PrintableSubEntry kU0023[] = {
81 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_7},
82 {DomCode::BACKSLASH, 1, 0, 0x0027, kAny, VKEY_OEM_2}, // apostrophe
83 {DomCode::BACKSLASH, 1, 0, 0x007E, kAny, VKEY_OEM_7}}; // ~, NoSymbol
84
85 // U+0024 dollar sign
86 const PrintableSubEntry kU0024[] = {
87 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_1},
88 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_8}};
89
90 // U+0027 apostrophe
91 const PrintableSubEntry kU0027[] = {
92 {DomCode::DIGIT4, 0, 0, kAny, kAny, VKEY_4},
93 {DomCode::KEY_Q, 0, 0, kAny, kAny, VKEY_OEM_7},
94 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_1},
95 {DomCode::SLASH, 0, 0, kAny, kAny, VKEY_OEM_7},
96 {DomCode::QUOTE, 1, 0, 0x0022, kAny, VKEY_OEM_7}, // quote
97 {DomCode::BACKQUOTE, 1, 0, 0x0022, kAny, VKEY_OEM_3}, // quote
98 {DomCode::BACKQUOTE, 1, 0, 0x00B7, kAny, VKEY_OEM_5}, // middle dot
99 {DomCode::BACKSLASH, 1, 0, kNone, kAny, VKEY_OEM_5}, // NoSymbol
100 {DomCode::MINUS, 1, 0, 0x003F, kAny, VKEY_OEM_4}, // ?
101 {DomCode::EQUAL, 1, 0, 0x002A, kAny, VKEY_OEM_PLUS}, // *
102 {DomCode::QUOTE, 1, 0, 0x0040, kAny, VKEY_OEM_3}, // @
103 {DomCode::BACKSLASH, 1, 1, 0x002A, 0x00BD, VKEY_OEM_5}, // *, one half
104 {DomCode::BACKSLASH, 1, 0, 0x002A, kAny, VKEY_OEM_2}, // *, NoSymbol
105 {DomCode::KEY_Z, 1, 1, 0x0022, 0x0158, VKEY_OEM_7}, // quote, R caron
106 {DomCode::KEY_Z, 1, 0, 0x0022, kAny, VKEY_Z}}; // quote
107
108 // U+0028 left parenthesis
109 const PrintableSubEntry kU0028[] = {
110 {DomCode::DIGIT5, 0, 0, kAny, kAny, VKEY_5},
111 {DomCode::DIGIT9, 0, 0, kAny, kAny, VKEY_9},
112 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
113
114 // U+0029 right parenthesis
115 const PrintableSubEntry kU0029[] = {
116 {DomCode::DIGIT0, 0, 0, kAny, kAny, VKEY_0},
117 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_4},
118 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6}};
119
120 // U+002A *
121 const PrintableSubEntry kU002A[] = {
122 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_1},
123 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
124
125 // U+002B plus sign
126 const PrintableSubEntry kU002B[] = {
127 {DomCode::DIGIT1, 0, 0, kAny, kAny, VKEY_1},
128 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
129 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
130 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
131 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
132 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_2},
133 {DomCode::MINUS, 1, 1, 0x003F, 0x005C, VKEY_OEM_MINUS}, // ?, backslash
134 {DomCode::MINUS, 1, 0, 0x003F, kAny, VKEY_OEM_PLUS}}; // ?
135
136 // U+002C comma
137 const PrintableSubEntry kU002C[] = {
138 {DomCode::DIGIT3, 0, 0, kAny, kAny, VKEY_3},
139 {DomCode::DIGIT5, 0, 0, kAny, kAny, VKEY_5},
140 {DomCode::DIGIT6, 0, 0, kAny, kAny, VKEY_6},
141 {DomCode::DIGIT9, 0, 0, kAny, kAny, VKEY_9},
142 {DomCode::KEY_W, 0, 0, kAny, kAny, VKEY_OEM_COMMA},
143 {DomCode::KEY_V, 0, 0, kAny, kAny, VKEY_OEM_COMMA},
144 {DomCode::KEY_M, 0, 0, kAny, kAny, VKEY_OEM_COMMA},
145 {DomCode::COMMA, 0, 0, kAny, kAny, VKEY_OEM_COMMA}};
146
147 // U+002D hyphen-minus
148 const PrintableSubEntry kU002D[] = {
149 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_2},
150 {DomCode::DIGIT6, 0, 0, kAny, kAny, VKEY_6},
151 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_MINUS},
152 {DomCode::KEY_A, 0, 0, kAny, kAny, VKEY_OEM_MINUS},
153 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_MINUS},
154 {DomCode::SLASH, 1, 0, 0x003D, kAny, VKEY_OEM_MINUS}, // =
155 {DomCode::EQUAL, 1, 1, 0x005F, 0x0157, VKEY_OEM_4}, // _, r cedilla
156 {DomCode::EQUAL, 1, 0, 0x005F, kAny, VKEY_OEM_MINUS}, // _
157 {DomCode::SLASH, 1, 1, 0x005F, 0x002F, VKEY_OEM_2}, // _, /
158 {DomCode::SLASH, 1, 0, 0x005F, kAny, VKEY_OEM_MINUS}}; // _
159
160 // U+002E full stop
161 const PrintableSubEntry kU002E[] = {
162 {DomCode::DIGIT7, 0, 0, kAny, kAny, VKEY_7},
163 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
164 {DomCode::KEY_E, 0, 0, kAny, kAny, VKEY_OEM_PERIOD},
165 {DomCode::KEY_R, 0, 0, kAny, kAny, VKEY_OEM_PERIOD},
166 {DomCode::KEY_O, 0, 0, kAny, kAny, VKEY_OEM_PERIOD},
167 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7},
168 {DomCode::PERIOD, 0, 0, kAny, kAny, VKEY_OEM_PERIOD},
169 {DomCode::SLASH, 0, 0, kAny, kAny, VKEY_OEM_2}};
170
171 // U+002F /
172 const PrintableSubEntry kU002F[] = {
173 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_4},
174 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_2},
175 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_7},
176 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5},
177 {DomCode::SLASH, 0, 0, kAny, kAny, VKEY_OEM_2},
178 {DomCode::DIGIT3, 1, 0, 0x0033, kAny, VKEY_3}, // 3
179 {DomCode::DIGIT3, 1, 0, 0x003F, kAny, VKEY_OEM_2}, // ?
180 {DomCode::DIGIT0, 1, 0, 0x0030, kAny, VKEY_0}, // 0
181 {DomCode::DIGIT0, 1, 0, 0x003F, kAny, VKEY_OEM_2}}; // ?
182
183 // U+003A colon
184 const PrintableSubEntry kU003A[] = {
185 {DomCode::DIGIT1, 0, 0, kAny, kAny, VKEY_1},
186 {DomCode::DIGIT5, 0, 0, kAny, kAny, VKEY_5},
187 {DomCode::DIGIT6, 0, 0, kAny, kAny, VKEY_6},
188 {DomCode::PERIOD, 0, 0, kAny, kAny, VKEY_OEM_2}};
189
190 // U+003B semicolon
191 const PrintableSubEntry kU003B[] = {
192 {DomCode::DIGIT4, 0, 0, kAny, kAny, VKEY_4},
193 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
194 {DomCode::KEY_Q, 0, 0, kAny, kAny, VKEY_OEM_1},
195 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_1},
196 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6},
197 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_1},
198 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_3},
199 {DomCode::KEY_Z, 0, 0, kAny, kAny, VKEY_OEM_1},
200 {DomCode::COMMA, 0, 0, kAny, kAny, VKEY_OEM_PERIOD},
201 {DomCode::SLASH, 0, 0, kAny, kAny, VKEY_OEM_2}};
202 // U+003D =
203 const PrintableSubEntry kU003D[] = {
204 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
205 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
206 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
207 {DomCode::SLASH, 1, 0, 0x0025, kAny, VKEY_OEM_8}, // %
208 {DomCode::SLASH, 1, 0, 0x002B, kAny, VKEY_OEM_PLUS}, // +
209 {DomCode::MINUS, 1, 1, 0x0025, 0x002D, VKEY_OEM_MINUS}, // %, -
210 {DomCode::MINUS, 1, 0, 0x0025, kAny, VKEY_OEM_PLUS}}; // %, NoSymbol
211
212 // U+003F ?
213 const PrintableSubEntry kU003F[] = {
214 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_2},
215 {DomCode::DIGIT7, 0, 0, kAny, kAny, VKEY_7},
216 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
217 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_PLUS}};
218
219 // U+0040 @
220 const PrintableSubEntry kU0040[] = {
221 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6},
222 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
223
224 // U+005B left square bracket
225 const PrintableSubEntry kU005B[] = {
226 {DomCode::DIGIT1, 0, 0, kAny, kAny, VKEY_OEM_4},
227 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_4},
228 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4},
229 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6},
230 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
231
232 // U+005C backslash
233 const PrintableSubEntry kU005C[] = {
234 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_4},
235 {DomCode::BACKSLASH, 1, 0, 0x002F, kAny, VKEY_OEM_7}, // /
236 {DomCode::BACKSLASH, 1, 0, 0x007C, kAny, VKEY_OEM_5}, // |
237 {DomCode::BACKQUOTE, 1, 1, 0x007C, 0x0031, VKEY_OEM_5}, // |, 1
238 {DomCode::BACKQUOTE, 1, 1, 0x007C, 0x0145, VKEY_OEM_3}}; // |, N cedilla
239
240 // U+005D right square bracket
241 const PrintableSubEntry kU005D[] = {
242 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_OEM_6},
243 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_6},
244 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6},
245 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_3},
246 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
247
248 // U+005F _
249 const PrintableSubEntry kU005F[] = {
250 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
251 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_MINUS}};
252
253 // U+0060 grave accent
254 const PrintableSubEntry kU0060[] = {
255 {DomCode::BACKQUOTE, 1, 0, kNone, kAny, VKEY_OEM_3}, // NoSymbol
256 {DomCode::BACKQUOTE, 1, 0, 0x00AC, kAny, VKEY_OEM_8}, // not
257 {DomCode::BACKQUOTE, 1, 0, 0x007E, kAny, VKEY_OEM_3}}; // ~
258
259 // U+00A7 section
260 const PrintableSubEntry kU00A7[] = {
261 {DomCode::DIGIT4, 0, 0, kAny, kAny, VKEY_4},
262 {DomCode::DIGIT6, 0, 0, kAny, kAny, VKEY_6},
263 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7},
264 {DomCode::BACKQUOTE, 1, 0, 0x00B0, kAny, VKEY_OEM_2}, // degree
265 {DomCode::BACKQUOTE, 1, 0, 0x00BD, kAny, VKEY_OEM_5}}; // one half
266
267 // U+00AB left-pointing double angle quote
268 const PrintableSubEntry kU00AB[] = {
269 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
270 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_6}};
271
272 // U+00B0 degree
273 const PrintableSubEntry kU00B0[] = {
274 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_2},
275 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
276
277 // U+00BA masculine ordinal indicator
278 const PrintableSubEntry kU00BA[] = {
279 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7},
280 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_OEM_5}};
281
282 // U+00E0 a grave
283 const PrintableSubEntry kU00E0[] = {
284 {DomCode::DIGIT0, 0, 0, kAny, kAny, VKEY_0},
285 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5},
286 {DomCode::QUOTE, 1, 0, 0x00B0, kAny, VKEY_OEM_7}, // degree
287 {DomCode::QUOTE, 1, 0, 0x00E4, kAny, VKEY_OEM_5}}; // a diaeresis
288
289 // U+00E1 a acute
290 const PrintableSubEntry kU00E1[] = {
291 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
292 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
293
294 // U+00E2 a circumflex
295 const PrintableSubEntry kU00E2[] = {
296 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_2},
297 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
298
299 // U+00E4 a diaeresis
300 const PrintableSubEntry kU00E4[] = {
301 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6},
302 {DomCode::QUOTE, 1, 0, 0x00E0, kAny, VKEY_OEM_5}, // a grave
303 {DomCode::QUOTE, 1, 0, 0x00C4, kAny, VKEY_OEM_7}}; // A dia.
304
305 // U+00E6 ae
306 const PrintableSubEntry kU00E6[] = {
307 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_3},
308 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
309
310 // U+00E7 c cedilla
311 const PrintableSubEntry kU00E7[] = {
312 {DomCode::DIGIT9, 0, 0, kAny, kAny, VKEY_9},
313 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4},
314 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6},
315 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7},
316 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_2},
317 {DomCode::COMMA, 0, 0, kAny, kAny, VKEY_OEM_COMMA},
318 {DomCode::SEMICOLON, 1, 1, 0x00C7, 0x00DE, VKEY_OEM_3}, // C ced., Thorn
319 {DomCode::SEMICOLON, 1, 0, 0x00C7, kAny, VKEY_OEM_1}}; // C ced., NoSy
320
321 // U+00E8 e grave
322 const PrintableSubEntry kU00E8[] = {
323 {DomCode::DIGIT7, 0, 0, kAny, kAny, VKEY_7},
324 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_1},
325 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_3}};
326
327 // U+00E9 e acute
328 const PrintableSubEntry kU00E9[] = {
329 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_2},
330 {DomCode::DIGIT0, 0, 0, kAny, kAny, VKEY_0},
331 {DomCode::SLASH, 0, 0, kAny, kAny, VKEY_OEM_2},
332 {DomCode::SEMICOLON, 1, 0, 0x00C9, kAny, VKEY_OEM_1}, // E acute
333 {DomCode::SEMICOLON, 1, 0, 0x00F6, kAny, VKEY_OEM_7}}; // o diaeresis
334
335 // U+00ED i acute
336 const PrintableSubEntry kU00ED[] = {
337 {DomCode::DIGIT9, 0, 0, kAny, kAny, VKEY_9},
338 {DomCode::BACKQUOTE, 0, 0, kAny, kAny, VKEY_0}};
339
340 // U+00F0 eth
341 const PrintableSubEntry kU00F0[] = {
342 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_6},
343 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_1}};
344
345 // U+00F3 o acute
346 const PrintableSubEntry kU00F3[] = {
347 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
348 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
349
350 // U+00F4 o circumflex
351 const PrintableSubEntry kU00F4[] = {
352 {DomCode::DIGIT4, 0, 0, kAny, kAny, VKEY_4},
353 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_1}};
354
355 // U+00F6 o diaeresis
356 const PrintableSubEntry kU00F6[] = {
357 {DomCode::DIGIT0, 0, 0, kAny, kAny, VKEY_OEM_3},
358 {DomCode::MINUS, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
359 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4},
360 {DomCode::SEMICOLON, 1, 0, 0x00E9, kAny, VKEY_OEM_7}, // e acute
361 {DomCode::SEMICOLON, 1, 1, 0x00D6, 0x0162, VKEY_OEM_3}, // O dia., T ced.
362 {DomCode::SEMICOLON, 1, 0, 0x00D6, kAny, VKEY_OEM_3}}; // O diaresis
363
364 // U+00F8 o stroke
365 const PrintableSubEntry kU00F8[] = {
366 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_3},
367 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
368
369 // U+00F9 u grave
370 const PrintableSubEntry kU00F9[] = {
371 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_3},
372 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_2}};
373
374 // U+00FA u acute
375 const PrintableSubEntry kU00FA[] = {
376 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4},
377 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6}};
378
379 // U+00FC u diaeresis
380 const PrintableSubEntry kU00FC[] = {
381 {DomCode::KEY_W, 0, 0, kAny, kAny, VKEY_W},
382 {DomCode::BRACKET_LEFT, 1, 0, 0x00E8, kAny, VKEY_OEM_1}, // e grave
383 {DomCode::MINUS, 1, 0, 0x00DC, kAny, VKEY_OEM_2}, // U diaresis
384 {DomCode::BRACKET_LEFT, 1, 1, 0x00DC, 0x0141, VKEY_OEM_3}, // U dia., L-
385 {DomCode::BRACKET_LEFT, 1, 0, 0x00DC, kAny, VKEY_OEM_1}}; // U diaresis
386
387 // U+0103 a breve
388 const PrintableSubEntry kU0103[] = {
389 {DomCode::DIGIT1, 0, 0, kAny, kAny, VKEY_1},
390 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4}};
391
392 // U+0105 a ogonek
393 const PrintableSubEntry kU0105[] = {
394 {DomCode::DIGIT1, 0, 0, kAny, kAny, VKEY_1},
395 {DomCode::KEY_Q, 0, 0, kAny, kAny, VKEY_Q},
396 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
397
398 // U+010D c caron
399 const PrintableSubEntry kU010D[] = {
400 {DomCode::DIGIT2, 0, 0, kAny, kAny, VKEY_2},
401 {DomCode::DIGIT4, 0, 0, kAny, kAny, VKEY_4},
402 {DomCode::KEY_P, 0, 0, kAny, kAny, VKEY_X},
403 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_1},
404 {DomCode::COMMA, 0, 0, kAny, kAny, VKEY_OEM_COMMA}};
405
406 // U+0111 d stroke
407 const PrintableSubEntry kU0111[] = {
408 {DomCode::DIGIT0, 0, 0, kAny, kAny, VKEY_0},
409 {DomCode::BRACKET_RIGHT, 0, 0, kAny, kAny, VKEY_OEM_6}};
410
411 // U+0117 e dot above
412 const PrintableSubEntry kU0117[] = {
413 {DomCode::DIGIT4, 0, 0, kAny, kAny, VKEY_4},
414 {DomCode::QUOTE, 0, 0, kAny, kAny, VKEY_OEM_7}};
415
416 // U+0119 e ogonek
417 const PrintableSubEntry kU0119[] = {
418 {DomCode::DIGIT3, 0, 0, kAny, kAny, VKEY_3},
419 {DomCode::SLASH, 1, 1, 0x0118, 0x006E, VKEY_OEM_2}, // E ogonek, n
420 {DomCode::SLASH, 1, 0, 0x0118, kAny, VKEY_OEM_MINUS}}; // E ogonek
421
422 // U+012F i ogonek
423 const PrintableSubEntry kU012F[] = {
424 {DomCode::DIGIT5, 0, 0, kAny, kAny, VKEY_5},
425 {DomCode::BRACKET_LEFT, 1, 0, 0x012E, kAny, VKEY_OEM_4}}; // Iogonek
426
427 // U+0142 l stroke
428 const PrintableSubEntry kU0142[] = {
429 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_1},
430 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_2}};
431
432 // U+015F s cedilla
433 const PrintableSubEntry kU015F[] = {
434 {DomCode::SEMICOLON, 0, 0, kAny, kAny, VKEY_OEM_1},
435 {DomCode::PERIOD, 0, 0, kAny, kAny, VKEY_OEM_PERIOD}};
436
437 // U+0161 s caron
438 const PrintableSubEntry kU0161[] = {
439 {DomCode::DIGIT3, 0, 0, kAny, kAny, VKEY_3},
440 {DomCode::DIGIT6, 0, 0, kAny, kAny, VKEY_6},
441 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4},
442 {DomCode::KEY_A, 0, 0, kAny, kAny, VKEY_OEM_1},
443 {DomCode::KEY_F, 0, 0, kAny, kAny, VKEY_F},
444 {DomCode::PERIOD, 0, 0, kAny, kAny, VKEY_OEM_PERIOD}};
445
446 // U+016B u macron
447 const PrintableSubEntry kU016B[] = {
448 {DomCode::DIGIT8, 0, 0, kAny, kAny, VKEY_8},
449 {DomCode::KEY_Q, 0, 0, kAny, kAny, VKEY_Q},
450 {DomCode::KEY_X, 0, 0, kAny, kAny, VKEY_X}};
451
452 // U+0173 u ogonek
453 const PrintableSubEntry kU0173[] = {
454 {DomCode::DIGIT7, 0, 0, kAny, kAny, VKEY_7},
455 {DomCode::SEMICOLON, 1, 1, 0x0172, 0x0162, VKEY_OEM_1}, // U ogo., T ced.
456 {DomCode::SEMICOLON, 1, 0, 0x0172, kAny, VKEY_OEM_3}}; // U ogonek
457
458 // U+017C z dot above
459 const PrintableSubEntry kU017C[] = {
460 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_OEM_4},
461 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
462
463 // U+017E z caron
464 const PrintableSubEntry kU017E[] = {
465 {DomCode::DIGIT6, 0, 0, kAny, kAny, VKEY_6},
466 {DomCode::EQUAL, 0, 0, kAny, kAny, VKEY_OEM_PLUS},
467 {DomCode::KEY_W, 0, 0, kAny, kAny, VKEY_W},
468 {DomCode::BRACKET_LEFT, 0, 0, kAny, kAny, VKEY_Y},
469 {DomCode::BACKSLASH, 0, 0, kAny, kAny, VKEY_OEM_5}};
470
471 // Table mapping unshifted characters to PrintableSubEntry tables.
472 struct PrintableMultiEntry {
473 base::char16 plain_character;
474 const PrintableSubEntry* subtable;
475 size_t subtable_size;
476 };
477
478 // Entries are ordered by character value.
479 const PrintableMultiEntry kMultiMap[] = {
480 {0x0021, kU0021, arraysize(kU0021)}, // exclamation mark
481 {0x0022, kU0022, arraysize(kU0022)}, // quotation mark
482 {0x0023, kU0023, arraysize(kU0023)}, // number sign
483 {0x0024, kU0024, arraysize(kU0024)}, // dollar sign
484 {0x0027, kU0027, arraysize(kU0027)}, // apostrophe
485 {0x0028, kU0028, arraysize(kU0028)}, // left parenthesis
486 {0x0029, kU0029, arraysize(kU0029)}, // right parenthesis
487 {0x002A, kU002A, arraysize(kU002A)}, // asterisk
488 {0x002B, kU002B, arraysize(kU002B)}, // plus sign
489 {0x002C, kU002C, arraysize(kU002C)}, // comma
490 {0x002D, kU002D, arraysize(kU002D)}, // hyphen-minus
491 {0x002E, kU002E, arraysize(kU002E)}, // full stop
492 {0x002F, kU002F, arraysize(kU002F)}, // solidus
493 {0x003A, kU003A, arraysize(kU003A)}, // colon
494 {0x003B, kU003B, arraysize(kU003B)}, // semicolon
495 {0x003D, kU003D, arraysize(kU003D)}, // equals sign
496 {0x003F, kU003F, arraysize(kU003F)}, // question mark
497 {0x0040, kU0040, arraysize(kU0040)}, // commercial at
498 {0x005B, kU005B, arraysize(kU005B)}, // left square bracket
499 {0x005C, kU005C, arraysize(kU005C)}, // reverse solidus
500 {0x005D, kU005D, arraysize(kU005D)}, // right square bracket
501 {0x005F, kU005F, arraysize(kU005F)}, // low line
502 {0x0060, kU0060, arraysize(kU0060)}, // grave accent
503 {0x00A7, kU00A7, arraysize(kU00A7)}, // section sign
504 {0x00AB, kU00AB, arraysize(kU00AB)}, // left double angle quotation mark
505 {0x00B0, kU00B0, arraysize(kU00B0)}, // degree sign
506 {0x00BA, kU00BA, arraysize(kU00BA)}, // masculine ordinal indicator
507 {0x00E0, kU00E0, arraysize(kU00E0)}, // a grave
508 {0x00E1, kU00E1, arraysize(kU00E1)}, // a acute
509 {0x00E2, kU00E2, arraysize(kU00E2)}, // a circumflex
510 {0x00E4, kU00E4, arraysize(kU00E4)}, // a diaeresis
511 {0x00E6, kU00E6, arraysize(kU00E6)}, // ae
512 {0x00E7, kU00E7, arraysize(kU00E7)}, // c cedilla
513 {0x00E8, kU00E8, arraysize(kU00E8)}, // e grave
514 {0x00E9, kU00E9, arraysize(kU00E9)}, // e acute
515 {0x00ED, kU00ED, arraysize(kU00ED)}, // i acute
516 {0x00F0, kU00F0, arraysize(kU00F0)}, // eth
517 {0x00F3, kU00F3, arraysize(kU00F3)}, // o acute
518 {0x00F4, kU00F4, arraysize(kU00F4)}, // o circumflex
519 {0x00F6, kU00F6, arraysize(kU00F6)}, // o diaeresis
520 {0x00F8, kU00F8, arraysize(kU00F8)}, // o stroke
521 {0x00F9, kU00F9, arraysize(kU00F9)}, // u grave
522 {0x00FA, kU00FA, arraysize(kU00FA)}, // u acute
523 {0x00FC, kU00FC, arraysize(kU00FC)}, // u diaeresis
524 {0x0103, kU0103, arraysize(kU0103)}, // a breve
525 {0x0105, kU0105, arraysize(kU0105)}, // a ogonek
526 {0x010D, kU010D, arraysize(kU010D)}, // c caron
527 {0x0111, kU0111, arraysize(kU0111)}, // d stroke
528 {0x0117, kU0117, arraysize(kU0117)}, // e dot above
529 {0x0119, kU0119, arraysize(kU0119)}, // e ogonek
530 {0x012F, kU012F, arraysize(kU012F)}, // i ogonek
531 {0x0142, kU0142, arraysize(kU0142)}, // l stroke
532 {0x015F, kU015F, arraysize(kU015F)}, // s cedilla
533 {0x0161, kU0161, arraysize(kU0161)}, // s caron
534 {0x016B, kU016B, arraysize(kU016B)}, // u macron
535 {0x0173, kU0173, arraysize(kU0173)}, // u ogonek
536 {0x017C, kU017C, arraysize(kU017C)}, // z dot above
537 {0x017E, kU017E, arraysize(kU017E)}, // z caron
538 };
539
540 // Table mapping unshifted characters to VKEY values.
541 struct PrintableSimpleEntry {
542 base::char16 plain_character;
543 KeyboardCode key_code;
544 };
545
546 // Entries are ordered by character value.
547 const PrintableSimpleEntry kSimpleMap[] = {
548 {0x0025, VKEY_5}, // percent sign
549 {0x0026, VKEY_1}, // ampersand
550 {0x003C, VKEY_OEM_5}, // less-than sign
551 {0x007B, VKEY_OEM_7}, // left curly bracket
552 {0x007C, VKEY_OEM_5}, // vertical line
553 {0x007D, VKEY_OEM_2}, // right curly bracket
554 {0x007E, VKEY_OEM_5}, // tilde
555 {0x00A1, VKEY_OEM_6}, // inverted exclamation mark
556 {0x00AD, VKEY_OEM_3}, // soft hyphen
557 {0x00B2, VKEY_OEM_7}, // superscript two
558 {0x00B5, VKEY_OEM_5}, // micro sign
559 {0x00BB, VKEY_9}, // right-pointing double angle quotation mark
560 {0x00BD, VKEY_OEM_5}, // vulgar fraction one half
561 {0x00BF, VKEY_OEM_6}, // inverted question mark
562 {0x00DF, VKEY_OEM_4}, // sharp s
563 {0x00E5, VKEY_OEM_6}, // a ring above
564 {0x00EA, VKEY_3}, // e circumflex
565 {0x00EB, VKEY_OEM_1}, // e diaeresis
566 {0x00EC, VKEY_OEM_6}, // i grave
567 {0x00EE, VKEY_OEM_6}, // i circumflex
568 {0x00F1, VKEY_OEM_3}, // n tilde
569 {0x00F2, VKEY_OEM_3}, // o grave
570 {0x00F5, VKEY_OEM_4}, // o tilde
571 {0x00F7, VKEY_OEM_6}, // division sign
572 {0x00FD, VKEY_7}, // y acute
573 {0x00FE, VKEY_OEM_MINUS}, // thorn
574 {0x0101, VKEY_OEM_8}, // a macron
575 {0x0107, VKEY_OEM_7}, // c acute
576 {0x010B, VKEY_OEM_3}, // c dot above
577 {0x0113, VKEY_W}, // e macron
578 {0x011B, VKEY_2}, // e caron
579 {0x011F, VKEY_OEM_6}, // g breve
580 {0x0121, VKEY_OEM_4}, // g dot above
581 {0x0127, VKEY_OEM_6}, // h stroke
582 {0x012B, VKEY_OEM_6}, // i macron
583 {0x0131, VKEY_OEM_1}, // dotless i
584 {0x0137, VKEY_OEM_5}, // k cedilla
585 {0x013C, VKEY_OEM_2}, // l cedilla
586 {0x013E, VKEY_2}, // l caron
587 {0x0146, VKEY_OEM_4}, // n cedilla
588 {0x0148, VKEY_OEM_5}, // n caron
589 {0x0151, VKEY_OEM_4}, // o double acute
590 {0x0159, VKEY_5}, // r caron
591 {0x0163, VKEY_OEM_7}, // t cedilla
592 {0x0165, VKEY_5}, // t caron
593 {0x016F, VKEY_OEM_1}, // u ring above
594 {0x0171, VKEY_OEM_5}, // u double acute
595 {0x01A1, VKEY_OEM_6}, // o horn
596 {0x01B0, VKEY_OEM_4}, // u horn
597 {0x01B6, VKEY_OEM_6}, // z stroke
598 {0x0259, VKEY_OEM_3}, // schwa
599 };
600
601 #if defined(OS_CHROMEOS)
602 void LoadKeymap(const std::string& layout_name,
603 scoped_refptr<base::SingleThreadTaskRunner> reply_runner,
604 const LoadKeymapCallback& reply_callback) {
605 std::string layout_id;
606 std::string layout_variant;
607 XkbKeyboardLayoutEngine::ParseLayoutName(layout_name, &layout_id,
608 &layout_variant);
609 xkb_rule_names names = {.rules = NULL,
610 .model = "pc101",
611 .layout = layout_id.c_str(),
612 .variant = layout_variant.c_str(),
613 .options = ""};
614 scoped_ptr<xkb_context, XkbContextDeleter> context;
615 context.reset(xkb_context_new(XKB_CONTEXT_NO_DEFAULT_INCLUDES));
616 xkb_context_include_path_append(context.get(), "/usr/share/X11/xkb");
617 scoped_ptr<xkb_keymap, XkbKeymapDeleter> keymap;
618 keymap.reset(xkb_keymap_new_from_names(context.get(), &names,
619 XKB_KEYMAP_COMPILE_NO_FLAGS));
620 if (keymap) {
621 scoped_ptr<char, base::FreeDeleter> keymap_str(
622 xkb_keymap_get_as_string(keymap.get(), XKB_KEYMAP_FORMAT_TEXT_V1));
623 reply_runner->PostTask(FROM_HERE, base::Bind(reply_callback, layout_name,
624 base::Passed(&keymap_str)));
625 } else {
626 LOG(FATAL) << "Keymap file failed to load: " << layout_name;
627 }
628 }
629 #endif
630
631 } // anonymous namespace
632
633 XkbKeyCodeConverter::XkbKeyCodeConverter() {
634 }
635
636 XkbKeyCodeConverter::~XkbKeyCodeConverter() {
637 }
638
639 XkbKeyboardLayoutEngine::XkbKeyboardLayoutEngine(
640 const XkbKeyCodeConverter& converter)
641 : key_code_converter_(converter), weak_ptr_factory_(this) {
642 // TODO: add XKB_CONTEXT_NO_ENVIRONMENT_NAMES
643 xkb_context_.reset(xkb_context_new(XKB_CONTEXT_NO_DEFAULT_INCLUDES));
644 xkb_context_include_path_append(xkb_context_.get(),
645 "/usr/share/X11/xkb");
646 }
647
648 XkbKeyboardLayoutEngine::~XkbKeyboardLayoutEngine() {
649 for (const auto& entry : xkb_keymaps_) {
650 xkb_keymap_unref(entry.keymap);
651 }
652 }
653
654 bool XkbKeyboardLayoutEngine::CanSetCurrentLayout() const {
655 #if defined(OS_CHROMEOS)
656 return true;
657 #else
658 return false;
659 #endif
660 }
661
662 bool XkbKeyboardLayoutEngine::SetCurrentLayoutByName(
663 const std::string& layout_name) {
664 #if defined(OS_CHROMEOS)
665 current_layout_name_ = layout_name;
666 for (const auto& entry : xkb_keymaps_) {
667 if (entry.layout_name == layout_name) {
668 SetKeymap(entry.keymap);
669 return true;
670 }
671 }
672 LoadKeymapCallback reply_callback = base::Bind(
673 &XkbKeyboardLayoutEngine::OnKeymapLoaded, weak_ptr_factory_.GetWeakPtr());
674 base::WorkerPool::PostTask(
675 FROM_HERE,
676 base::Bind(&LoadKeymap, layout_name, base::ThreadTaskRunnerHandle::Get(),
677 reply_callback),
678 true);
679 #else
680 xkb_keymap* keymap = xkb_map_new_from_string(
681 xkb_context_.get(), layout_name.c_str(), XKB_KEYMAP_FORMAT_TEXT_V1,
682 XKB_KEYMAP_COMPILE_NO_FLAGS);
683 if (!keymap)
684 return false;
685 SetKeymap(keymap);
686 #endif // defined(OS_CHROMEOS)
687 return true;
688 }
689
690 void XkbKeyboardLayoutEngine::OnKeymapLoaded(
691 const std::string& layout_name,
692 scoped_ptr<char, base::FreeDeleter> keymap_str) {
693 if (keymap_str) {
694 xkb_keymap* keymap = xkb_map_new_from_string(
695 xkb_context_.get(), keymap_str.get(), XKB_KEYMAP_FORMAT_TEXT_V1,
696 XKB_KEYMAP_COMPILE_NO_FLAGS);
697 XkbKeymapEntry entry = {layout_name, keymap};
698 xkb_keymaps_.push_back(entry);
699 if (layout_name == current_layout_name_)
700 SetKeymap(keymap);
701 } else {
702 LOG(FATAL) << "Keymap file failed to load: " << layout_name;
703 }
704 }
705
706 bool XkbKeyboardLayoutEngine::UsesISOLevel5Shift() const {
707 // NOTIMPLEMENTED();
708 return false;
709 }
710
711 bool XkbKeyboardLayoutEngine::UsesAltGr() const {
712 // NOTIMPLEMENTED();
713 return false;
714 }
715
716 bool XkbKeyboardLayoutEngine::Lookup(DomCode dom_code,
717 int flags,
718 DomKey* dom_key,
719 base::char16* character,
720 KeyboardCode* key_code,
721 uint32* platform_keycode) const {
722 if (dom_code == DomCode::NONE)
723 return false;
724 // Convert DOM physical key to XKB representation.
725 xkb_keycode_t xkb_keycode = key_code_converter_.DomCodeToXkbKeyCode(dom_code);
726 if (xkb_keycode == key_code_converter_.InvalidXkbKeyCode()) {
727 LOG(ERROR) << "No XKB keycode for DomCode 0x" << std::hex
728 << static_cast<int>(dom_code) << " '"
729 << KeycodeConverter::DomCodeToCodeString(dom_code) << "'";
730 return false;
731 }
732 xkb_mod_mask_t xkb_flags = EventFlagsToXkbFlags(flags);
733 // Obtain keysym and character.
734 xkb_keysym_t xkb_keysym;
735 if (!XkbLookup(xkb_keycode, xkb_flags, &xkb_keysym, character))
736 return false;
737 *platform_keycode = xkb_keysym;
738 // Classify the keysym and convert to DOM and VKEY representations.
739 *dom_key = NonPrintableXKeySymToDomKey(xkb_keysym);
740 if (*dom_key == DomKey::NONE) {
741 *dom_key = CharacterToDomKey(*character);
742 *key_code = AlphanumericKeyboardCode(*character);
743 if (*key_code == VKEY_UNKNOWN) {
744 *key_code = DifficultKeyboardCode(dom_code, flags, xkb_keycode, xkb_flags,
745 xkb_keysym, *dom_key, *character);
746 if (*key_code == VKEY_UNKNOWN) {
747 *key_code = LocatedToNonLocatedKeyboardCode(
748 DomCodeToUsLayoutKeyboardCode(dom_code));
749 }
750 }
751 // If the Control key is down, only allow ASCII control characters to be
752 // returned, regardless of the key layout. crbug.com/450849
753 if ((flags & EF_CONTROL_DOWN) && (*character >= 0x20))
754 *character = 0;
755 } else if (*dom_key == DomKey::DEAD) {
756 *character = DeadXkbKeySymToCombiningCharacter(xkb_keysym);
757 *key_code = LocatedToNonLocatedKeyboardCode(
758 DomCodeToUsLayoutKeyboardCode(dom_code));
759 } else {
760 *key_code = NonPrintableDomKeyToKeyboardCode(*dom_key);
761 if (*key_code == VKEY_UNKNOWN) {
762 *key_code = LocatedToNonLocatedKeyboardCode(
763 DomCodeToUsLayoutKeyboardCode(dom_code));
764 }
765 }
766 return true;
767 }
768
769 void XkbKeyboardLayoutEngine::SetKeymap(xkb_keymap* keymap) {
770 xkb_state_.reset(xkb_state_new(keymap));
771 // Update flag map.
772 static const struct {
773 int ui_flag;
774 const char* xkb_name;
775 } flags[] = {{ui::EF_CONTROL_DOWN, XKB_MOD_NAME_CTRL},
776 {ui::EF_SHIFT_DOWN, XKB_MOD_NAME_SHIFT},
777 {ui::EF_ALT_DOWN, XKB_MOD_NAME_ALT},
778 {ui::EF_CAPS_LOCK_DOWN, XKB_MOD_NAME_CAPS},
779 {ui::EF_COMMAND_DOWN, XKB_MOD_NAME_LOGO},
780 {ui::EF_MOD3_DOWN, "Mod3"},
781 {ui::EF_ALTGR_DOWN, "Mod5"}};
782 xkb_flag_map_.clear();
783 xkb_flag_map_.resize(arraysize(flags));
784 for (size_t i = 0; i < arraysize(flags); ++i) {
785 xkb_mod_index_t index = xkb_keymap_mod_get_index(keymap, flags[i].xkb_name);
786 if (index == XKB_MOD_INVALID) {
787 DVLOG(3) << "XKB keyboard layout does not contain " << flags[i].xkb_name;
788 } else {
789 xkb_mod_mask_t flag = static_cast<xkb_mod_mask_t>(1) << index;
790 XkbFlagMapEntry e = {flags[i].ui_flag, flag};
791 xkb_flag_map_.push_back(e);
792 }
793 }
794
795 // Update num lock mask.
796 num_lock_mod_mask_ = 0;
797 xkb_mod_index_t num_mod_index =
798 xkb_keymap_mod_get_index(keymap, XKB_MOD_NAME_NUM);
799 if (num_mod_index != XKB_MOD_INVALID)
800 num_lock_mod_mask_ = static_cast<xkb_mod_mask_t>(1) << num_mod_index;
801 }
802
803 xkb_mod_mask_t XkbKeyboardLayoutEngine::EventFlagsToXkbFlags(
804 int ui_flags) const {
805 xkb_mod_mask_t xkb_flags = 0;
806 for (const auto& entry : xkb_flag_map_) {
807 if (ui_flags & entry.ui_flag)
808 xkb_flags |= entry.xkb_flag;
809 }
810 // NumLock is always on.
811 xkb_flags |= num_lock_mod_mask_;
812 return xkb_flags;
813 }
814
815 bool XkbKeyboardLayoutEngine::XkbLookup(xkb_keycode_t xkb_keycode,
816 xkb_mod_mask_t xkb_flags,
817 xkb_keysym_t* xkb_keysym,
818 base::char16* character) const {
819 if (!xkb_state_) {
820 LOG(ERROR) << "No current XKB state";
821 return false;
822 }
823 xkb_state_update_mask(xkb_state_.get(), xkb_flags, 0, 0, 0, 0, 0);
824 *xkb_keysym = xkb_state_key_get_one_sym(xkb_state_.get(), xkb_keycode);
825 if (*xkb_keysym == XKB_KEY_NoSymbol)
826 return false;
827 uint32_t c = xkb_state_key_get_utf32(xkb_state_.get(), xkb_keycode);
828 DLOG_IF(ERROR, c != (c & 0xFFFF)) << "Non-BMP character:" << c;
829 *character = static_cast<base::char16>(c);
830 return true;
831 }
832
833 KeyboardCode XkbKeyboardLayoutEngine::DifficultKeyboardCode(
834 DomCode dom_code,
835 int ui_flags,
836 xkb_keycode_t xkb_keycode,
837 xkb_mod_mask_t xkb_flags,
838 xkb_keysym_t xkb_keysym,
839 DomKey dom_key,
840 base::char16 character) const {
841 // Get the layout interpretation without modifiers, so that
842 // e.g. Ctrl+D correctly generates VKEY_D.
843 xkb_keysym_t plain_keysym;
844 base::char16 plain_character;
845 if (!XkbLookup(xkb_keycode, 0, &plain_keysym, &plain_character))
846 return VKEY_UNKNOWN;
847
848 // If the plain key is non-printable, that determines the VKEY.
849 DomKey plain_key = NonPrintableXKeySymToDomKey(plain_keysym);
850 if (plain_key != ui::DomKey::NONE)
851 return NonPrintableDomKeyToKeyboardCode(dom_key);
852
853 // Plain ASCII letters and digits map directly to VKEY values.
854 KeyboardCode key_code = AlphanumericKeyboardCode(plain_character);
855 if (key_code != VKEY_UNKNOWN)
856 return key_code;
857
858 // Check the multi-character tables.
859 const PrintableMultiEntry* multi_end = kMultiMap + arraysize(kMultiMap);
860 const PrintableMultiEntry* multi =
861 std::lower_bound(kMultiMap, multi_end, plain_character,
862 [](const PrintableMultiEntry& e, base::char16 c) {
863 return e.plain_character < c;
864 });
865 if ((multi != multi_end) && (multi->plain_character == plain_character)) {
866 const base::char16 kNonCharacter = kAny;
867 base::char16 shift_character = kNonCharacter;
868 base::char16 altgr_character = kNonCharacter;
869 for (size_t i = 0; i < multi->subtable_size; ++i) {
870 if (multi->subtable[i].dom_code != dom_code)
871 continue;
872 if (multi->subtable[i].test_shift) {
873 if (shift_character == kNonCharacter) {
874 shift_character = XkbSubCharacter(xkb_keycode, xkb_flags, character,
875 ui::EF_SHIFT_DOWN);
876 }
877 if (shift_character != multi->subtable[i].shift_character)
878 continue;
879 }
880 if (multi->subtable[i].test_altgr) {
881 if (altgr_character == kNonCharacter) {
882 altgr_character = XkbSubCharacter(xkb_keycode, xkb_flags, character,
883 ui::EF_ALTGR_DOWN);
884 }
885 if (altgr_character != multi->subtable[i].altgr_character)
886 continue;
887 }
888 return multi->subtable[i].key_code;
889 }
890 }
891
892 // Check the simple character table.
893 const PrintableSimpleEntry* simple_end = kSimpleMap + arraysize(kSimpleMap);
894 const PrintableSimpleEntry* simple =
895 std::lower_bound(kSimpleMap, simple_end, plain_character,
896 [](const PrintableSimpleEntry& e, base::char16 c) {
897 return e.plain_character < c;
898 });
899 if ((simple != simple_end) && (simple->plain_character == plain_character))
900 return simple->key_code;
901
902 return VKEY_UNKNOWN;
903 }
904
905 base::char16 XkbKeyboardLayoutEngine::XkbSubCharacter(
906 xkb_keycode_t xkb_keycode,
907 xkb_mod_mask_t base_flags,
908 base::char16 base_character,
909 int ui_flags) const {
910 xkb_mod_mask_t flags = EventFlagsToXkbFlags(ui_flags);
911 if (flags == base_flags)
912 return base_character;
913 xkb_keysym_t keysym;
914 base::char16 character = 0;
915 if (!XkbLookup(xkb_keycode, flags, &keysym, &character))
916 character = kNone;
917 return character;
918 }
919
920 void XkbKeyboardLayoutEngine::ParseLayoutName(const std::string& layout_name,
921 std::string* layout_id,
922 std::string* layout_variant) {
923 size_t dash_index = layout_name.find('-');
924 size_t parentheses_index = layout_name.find('(');
925 *layout_id = layout_name;
926 *layout_variant = "";
927 if (parentheses_index != std::string::npos) {
928 *layout_id = layout_name.substr(0, parentheses_index);
929 size_t close_index = layout_name.find(')', parentheses_index);
930 if (close_index == std::string::npos)
931 close_index = layout_name.size();
932 *layout_variant = layout_name.substr(parentheses_index + 1,
933 close_index - parentheses_index - 1);
934 } else if (dash_index != std::string::npos) {
935 *layout_id = layout_name.substr(0, dash_index);
936 *layout_variant = layout_name.substr(dash_index + 1);
937 }
938 }
939
940 } // namespace ui