1 /*
2 * Copyright © 2012 Openismus GmbH
3 * Copyright © 2012 Intel Corporation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 #include "config.h"
26
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <string.h>
30
31 #include <linux/input.h>
32 #include <cairo.h>
33
34 #include "window.h"
35 #include "input-method-client-protocol.h"
36 #include "text-client-protocol.h"
37
38 struct keyboard;
39
40 struct virtual_keyboard {
41 struct wl_input_panel *input_panel;
42 struct wl_input_method *input_method;
43 struct wl_input_method_context *context;
44 struct display *display;
45 struct output *output;
46 char *preedit_string;
47 uint32_t preedit_style;
48 struct {
49 xkb_mod_mask_t shift_mask;
50 } keysym;
51 uint32_t serial;
52 uint32_t content_hint;
53 uint32_t content_purpose;
54 char *preferred_language;
55 char *surrounding_text;
56 uint32_t surrounding_cursor;
57 struct keyboard *keyboard;
58 };
59
60 enum key_type {
61 keytype_default,
62 keytype_backspace,
63 keytype_enter,
64 keytype_space,
65 keytype_switch,
66 keytype_symbols,
67 keytype_tab,
68 keytype_arrow_up,
69 keytype_arrow_left,
70 keytype_arrow_right,
71 keytype_arrow_down,
72 keytype_style
73 };
74
75 struct key {
76 enum key_type key_type;
77
78 char *label;
79 char *uppercase;
80 char *symbol;
81
82 unsigned int width;
83 };
84
85 struct layout {
86 const struct key *keys;
87 uint32_t count;
88
89 uint32_t columns;
90 uint32_t rows;
91
92 const char *language;
93 uint32_t text_direction;
94 };
95
96 static const struct key normal_keys[] = {
97 { keytype_default, "q", "Q", "1", 1},
98 { keytype_default, "w", "W", "2", 1},
99 { keytype_default, "e", "E", "3", 1},
100 { keytype_default, "r", "R", "4", 1},
101 { keytype_default, "t", "T", "5", 1},
102 { keytype_default, "y", "Y", "6", 1},
103 { keytype_default, "u", "U", "7", 1},
104 { keytype_default, "i", "I", "8", 1},
105 { keytype_default, "o", "O", "9", 1},
106 { keytype_default, "p", "P", "0", 1},
107 { keytype_backspace, "<--", "<--", "<--", 2},
108
109 { keytype_tab, "->|", "->|", "->|", 1},
110 { keytype_default, "a", "A", "-", 1},
111 { keytype_default, "s", "S", "@", 1},
112 { keytype_default, "d", "D", "*", 1},
113 { keytype_default, "f", "F", "^", 1},
114 { keytype_default, "g", "G", ":", 1},
115 { keytype_default, "h", "H", ";", 1},
116 { keytype_default, "j", "J", "(", 1},
117 { keytype_default, "k", "K", ")", 1},
118 { keytype_default, "l", "L", "~", 1},
119 { keytype_enter, "Enter", "Enter", "Enter", 2},
120
121 { keytype_switch, "ABC", "abc", "ABC", 2},
122 { keytype_default, "z", "Z", "/", 1},
123 { keytype_default, "x", "X", "\'", 1},
124 { keytype_default, "c", "C", "\"", 1},
125 { keytype_default, "v", "V", "+", 1},
126 { keytype_default, "b", "B", "=", 1},
127 { keytype_default, "n", "N", "?", 1},
128 { keytype_default, "m", "M", "!", 1},
129 { keytype_default, ",", ",", "\\", 1},
130 { keytype_default, ".", ".", "|", 1},
131 { keytype_switch, "ABC", "abc", "ABC", 1},
132
133 { keytype_symbols, "?123", "?123", "abc", 1},
134 { keytype_space, "", "", "", 5},
135 { keytype_arrow_up, "/\\", "/\\", "/\\", 1},
136 { keytype_arrow_left, "<", "<", "<", 1},
137 { keytype_arrow_right, ">", ">", ">", 1},
138 { keytype_arrow_down, "\\/", "\\/", "\\/", 1},
139 { keytype_style, "", "", "", 2}
140 };
141
142 static const struct key numeric_keys[] = {
143 { keytype_default, "1", "1", "1", 1},
144 { keytype_default, "2", "2", "2", 1},
145 { keytype_default, "3", "3", "3", 1},
146 { keytype_default, "4", "4", "4", 1},
147 { keytype_default, "5", "5", "5", 1},
148 { keytype_default, "6", "6", "6", 1},
149 { keytype_default, "7", "7", "7", 1},
150 { keytype_default, "8", "8", "8", 1},
151 { keytype_default, "9", "9", "9", 1},
152 { keytype_default, "0", "0", "0", 1},
153 { keytype_backspace, "<--", "<--", "<--", 2},
154
155 { keytype_space, "", "", "", 4},
156 { keytype_enter, "Enter", "Enter", "Enter", 2},
157 { keytype_arrow_up, "/\\", "/\\", "/\\", 1},
158 { keytype_arrow_left, "<", "<", "<", 1},
159 { keytype_arrow_right, ">", ">", ">", 1},
160 { keytype_arrow_down, "\\/", "\\/", "\\/", 1},
161 { keytype_style, "", "", "", 2}
162 };
163
164 static const struct key arabic_keys[] = {
165 { keytype_default, "ض", "ﹶ", "۱", 1},
166 { keytype_default, "ص", "ﹰ", "۲", 1},
167 { keytype_default, "ث", "ﹸ", "۳", 1},
168 { keytype_default, "ق", "ﹲ", "۴", 1},
169 { keytype_default, "ف", "ﻹ", "۵", 1},
170 { keytype_default, "غ", "ﺇ", "۶", 1},
171 { keytype_default, "ع", "`", "۷", 1},
172 { keytype_default, "ه", "٪", "۸", 1},
173 { keytype_default, "خ", ">", "۹", 1},
174 { keytype_default, "ح", "<", "۰", 1},
175 { keytype_backspace, "-->", "-->", "-->", 2},
176
177 { keytype_tab, "->|", "->|", "->|", 1},
178 { keytype_default, "ش", "ﹺ", "ﹼ", 1},
179 { keytype_default, "س", "ﹴ", "!", 1},
180 { keytype_default, "ي", "[", "@", 1},
181 { keytype_default, "ب", "]", "#", 1},
182 { keytype_default, "ل", "ﻷ", "$", 1},
183 { keytype_default, "ا", "أ", "%", 1},
184 { keytype_default, "ت", "-", "^", 1},
185 { keytype_default, "ن", "x", "&", 1},
186 { keytype_default, "م", "/", "*", 1},
187 { keytype_default, "ك", ":", "_", 1},
188 { keytype_default, "د", "\"", "+", 1},
189 { keytype_enter, "Enter", "Enter", "Enter", 2},
190
191 { keytype_switch, "Shift", "Base", "Shift", 2},
192 { keytype_default, "ئ", "~", ")", 1},
193 { keytype_default, "ء", "°", "(", 1},
194 { keytype_default, "ؤ", "{", "\"", 1},
195 { keytype_default, "ر", "}", "\'", 1},
196 { keytype_default, "ى", "ﺁ", "؟", 1},
197 { keytype_default, "ة", "'", "!", 1},
198 { keytype_default, "و", ",", ";", 1},
199 { keytype_default, "ﺯ", ".", "\\", 1},
200 { keytype_default, "ظ", "؟", "=", 1},
201 { keytype_switch, "Shift", "Base", "Shift", 2},
202
203 { keytype_symbols, "؟٣٢١", "؟٣٢١", "Base", 1},
204 { keytype_default, "ﻻ", "ﻵ", "|", 1},
205 { keytype_default, ",", "،", "،", 1},
206 { keytype_space, "", "", "", 6},
207 { keytype_default, ".", "ذ", "]", 1},
208 { keytype_default, "ط", "ﺝ", "[", 1},
209 { keytype_style, "", "", "", 2}
210 };
211
212
213 static const struct layout normal_layout = {
214 normal_keys,
215 sizeof(normal_keys) / sizeof(*normal_keys),
216 12,
217 4,
218 "en",
219 WL_TEXT_INPUT_TEXT_DIRECTION_LTR
220 };
221
222 static const struct layout numeric_layout = {
223 numeric_keys,
224 sizeof(numeric_keys) / sizeof(*numeric_keys),
225 12,
226 2,
227 "en",
228 WL_TEXT_INPUT_TEXT_DIRECTION_LTR
229 };
230
231 static const struct layout arabic_layout = {
232 arabic_keys,
233 sizeof(arabic_keys) / sizeof(*arabic_keys),
234 13,
235 4,
236 "ar",
237 WL_TEXT_INPUT_TEXT_DIRECTION_RTL
238 };
239
240 static const char *style_labels[] = {
241 "default",
242 "none",
243 "active",
244 "inactive",
245 "highlight",
246 "underline",
247 "selection",
248 "incorrect"
249 };
250
251 static const double key_width = 60;
252 static const double key_height = 50;
253
254 enum keyboard_state {
255 KEYBOARD_STATE_DEFAULT,
256 KEYBOARD_STATE_UPPERCASE,
257 KEYBOARD_STATE_SYMBOLS
258 };
259
260 struct keyboard {
261 struct virtual_keyboard *keyboard;
262 struct window *window;
263 struct widget *widget;
264
265 enum keyboard_state state;
266 };
267
268 static void __attribute__ ((format (printf, 1, 2)))
dbg(const char * fmt,...)269 dbg(const char *fmt, ...)
270 {
271 #ifdef DEBUG
272 int l;
273 va_list argp;
274
275 va_start(argp, fmt);
276 l = vfprintf(stderr, fmt, argp);
277 va_end(argp);
278 #endif
279 }
280
281 static const char *
label_from_key(struct keyboard * keyboard,const struct key * key)282 label_from_key(struct keyboard *keyboard,
283 const struct key *key)
284 {
285 if (key->key_type == keytype_style)
286 return style_labels[keyboard->keyboard->preedit_style];
287
288 switch(keyboard->state) {
289 case KEYBOARD_STATE_DEFAULT:
290 return key->label;
291 case KEYBOARD_STATE_UPPERCASE:
292 return key->uppercase;
293 case KEYBOARD_STATE_SYMBOLS:
294 return key->symbol;
295 }
296
297 return "";
298 }
299
300 static void
draw_key(struct keyboard * keyboard,const struct key * key,cairo_t * cr,unsigned int row,unsigned int col)301 draw_key(struct keyboard *keyboard,
302 const struct key *key,
303 cairo_t *cr,
304 unsigned int row,
305 unsigned int col)
306 {
307 const char *label;
308 cairo_text_extents_t extents;
309
310 cairo_save(cr);
311 cairo_rectangle(cr,
312 col * key_width, row * key_height,
313 key->width * key_width, key_height);
314 cairo_clip(cr);
315
316 /* Paint frame */
317 cairo_rectangle(cr,
318 col * key_width, row * key_height,
319 key->width * key_width, key_height);
320 cairo_set_line_width(cr, 3);
321 cairo_stroke(cr);
322
323 /* Paint text */
324 label = label_from_key(keyboard, key);
325 cairo_text_extents(cr, label, &extents);
326
327 cairo_translate(cr,
328 col * key_width,
329 row * key_height);
330 cairo_translate(cr,
331 (key->width * key_width - extents.width) / 2,
332 (key_height - extents.y_bearing) / 2);
333 cairo_show_text(cr, label);
334
335 cairo_restore(cr);
336 }
337
338 static const struct layout *
get_current_layout(struct virtual_keyboard * keyboard)339 get_current_layout(struct virtual_keyboard *keyboard)
340 {
341 switch (keyboard->content_purpose) {
342 case WL_TEXT_INPUT_CONTENT_PURPOSE_DIGITS:
343 case WL_TEXT_INPUT_CONTENT_PURPOSE_NUMBER:
344 return &numeric_layout;
345 default:
346 if (keyboard->preferred_language &&
347 strcmp(keyboard->preferred_language, "ar") == 0)
348 return &arabic_layout;
349 else
350 return &normal_layout;
351 }
352 }
353
354 static void
redraw_handler(struct widget * widget,void * data)355 redraw_handler(struct widget *widget, void *data)
356 {
357 struct keyboard *keyboard = data;
358 cairo_surface_t *surface;
359 struct rectangle allocation;
360 cairo_t *cr;
361 unsigned int i;
362 unsigned int row = 0, col = 0;
363 const struct layout *layout;
364
365 layout = get_current_layout(keyboard->keyboard);
366
367 surface = window_get_surface(keyboard->window);
368 widget_get_allocation(keyboard->widget, &allocation);
369
370 cr = cairo_create(surface);
371 cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height);
372 cairo_clip(cr);
373
374 cairo_select_font_face(cr, "sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
375 cairo_set_font_size(cr, 16);
376
377 cairo_translate(cr, allocation.x, allocation.y);
378
379 cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
380 cairo_set_source_rgba(cr, 1, 1, 1, 0.75);
381 cairo_rectangle(cr, 0, 0, layout->columns * key_width, layout->rows * key_height);
382 cairo_paint(cr);
383
384 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
385
386 for (i = 0; i < layout->count; ++i) {
387 cairo_set_source_rgb(cr, 0, 0, 0);
388 draw_key(keyboard, &layout->keys[i], cr, row, col);
389 col += layout->keys[i].width;
390 if (col >= layout->columns) {
391 row += 1;
392 col = 0;
393 }
394 }
395
396 cairo_destroy(cr);
397 cairo_surface_destroy(surface);
398 }
399
400 static void
resize_handler(struct widget * widget,int32_t width,int32_t height,void * data)401 resize_handler(struct widget *widget,
402 int32_t width, int32_t height, void *data)
403 {
404 /* struct keyboard *keyboard = data; */
405 }
406
407 static char *
insert_text(const char * text,uint32_t offset,const char * insert)408 insert_text(const char *text, uint32_t offset, const char *insert)
409 {
410 int tlen = strlen(text), ilen = strlen(insert);
411 char *new_text = xmalloc(tlen + ilen + 1);
412
413 memcpy(new_text, text, offset);
414 memcpy(new_text + offset, insert, ilen);
415 memcpy(new_text + offset + ilen, text + offset, tlen - offset);
416 new_text[tlen + ilen] = '\0';
417
418 return new_text;
419 }
420
421 static void
virtual_keyboard_commit_preedit(struct virtual_keyboard * keyboard)422 virtual_keyboard_commit_preedit(struct virtual_keyboard *keyboard)
423 {
424 char *surrounding_text;
425
426 if (!keyboard->preedit_string ||
427 strlen(keyboard->preedit_string) == 0)
428 return;
429
430 wl_input_method_context_cursor_position(keyboard->context,
431 0, 0);
432 wl_input_method_context_commit_string(keyboard->context,
433 keyboard->serial,
434 keyboard->preedit_string);
435
436 if (keyboard->surrounding_text) {
437 surrounding_text = insert_text(keyboard->surrounding_text,
438 keyboard->surrounding_cursor,
439 keyboard->preedit_string);
440 free(keyboard->surrounding_text);
441 keyboard->surrounding_text = surrounding_text;
442 keyboard->surrounding_cursor += strlen(keyboard->preedit_string);
443 } else {
444 keyboard->surrounding_text = strdup(keyboard->preedit_string);
445 keyboard->surrounding_cursor = strlen(keyboard->preedit_string);
446 }
447
448 free(keyboard->preedit_string);
449 keyboard->preedit_string = strdup("");
450 }
451
452 static void
virtual_keyboard_send_preedit(struct virtual_keyboard * keyboard,int32_t cursor)453 virtual_keyboard_send_preedit(struct virtual_keyboard *keyboard,
454 int32_t cursor)
455 {
456 uint32_t index = strlen(keyboard->preedit_string);
457
458 if (keyboard->preedit_style)
459 wl_input_method_context_preedit_styling(keyboard->context,
460 0,
461 strlen(keyboard->preedit_string),
462 keyboard->preedit_style);
463 if (cursor > 0)
464 index = cursor;
465 wl_input_method_context_preedit_cursor(keyboard->context,
466 index);
467 wl_input_method_context_preedit_string(keyboard->context,
468 keyboard->serial,
469 keyboard->preedit_string,
470 keyboard->preedit_string);
471 }
472
473 static const char *
prev_utf8_char(const char * s,const char * p)474 prev_utf8_char(const char *s, const char *p)
475 {
476 for (--p; p >= s; --p) {
477 if ((*p & 0xc0) != 0x80)
478 return p;
479 }
480 return NULL;
481 }
482
483 static void
delete_before_cursor(struct virtual_keyboard * keyboard)484 delete_before_cursor(struct virtual_keyboard *keyboard)
485 {
486 const char *start, *end;
487
488 if (!keyboard->surrounding_text) {
489 dbg("delete_before_cursor: No surrounding text available\n");
490 return;
491 }
492
493 start = prev_utf8_char(keyboard->surrounding_text,
494 keyboard->surrounding_text + keyboard->surrounding_cursor);
495 if (!start) {
496 dbg("delete_before_cursor: No previous character to delete\n");
497 return;
498 }
499
500 end = keyboard->surrounding_text + keyboard->surrounding_cursor;
501
502 wl_input_method_context_delete_surrounding_text(keyboard->context,
503 (start - keyboard->surrounding_text) - keyboard->surrounding_cursor,
504 end - start);
505 wl_input_method_context_commit_string(keyboard->context,
506 keyboard->serial,
507 "");
508
509 /* Update surrounding text */
510 keyboard->surrounding_cursor = start - keyboard->surrounding_text;
511 keyboard->surrounding_text[keyboard->surrounding_cursor] = '\0';
512 if (*end)
513 memmove(keyboard->surrounding_text + keyboard->surrounding_cursor, end, strlen(end));
514 }
515
516 static char *
append(char * s1,const char * s2)517 append(char *s1, const char *s2)
518 {
519 int len1, len2;
520 char *s;
521
522 len1 = strlen(s1);
523 len2 = strlen(s2);
524 s = xrealloc(s1, len1 + len2 + 1);
525 memcpy(s + len1, s2, len2);
526 s[len1 + len2] = '\0';
527
528 return s;
529 }
530
531 static void
keyboard_handle_key(struct keyboard * keyboard,uint32_t time,const struct key * key,struct input * input,enum wl_pointer_button_state state)532 keyboard_handle_key(struct keyboard *keyboard, uint32_t time, const struct key *key, struct input *input, enum wl_pointer_button_state state)
533 {
534 const char *label = NULL;
535
536 switch(keyboard->state) {
537 case KEYBOARD_STATE_DEFAULT :
538 label = key->label;
539 break;
540 case KEYBOARD_STATE_UPPERCASE :
541 label = key->uppercase;
542 break;
543 case KEYBOARD_STATE_SYMBOLS :
544 label = key->symbol;
545 break;
546 }
547
548 xkb_mod_mask_t mod_mask = keyboard->state == KEYBOARD_STATE_DEFAULT ? 0 : keyboard->keyboard->keysym.shift_mask;
549 uint32_t key_state = (state == WL_POINTER_BUTTON_STATE_PRESSED) ? WL_KEYBOARD_KEY_STATE_PRESSED : WL_KEYBOARD_KEY_STATE_RELEASED;
550
551 switch (key->key_type) {
552 case keytype_default:
553 if (state != WL_POINTER_BUTTON_STATE_PRESSED)
554 break;
555
556 keyboard->keyboard->preedit_string =
557 append(keyboard->keyboard->preedit_string,
558 label);
559 virtual_keyboard_send_preedit(keyboard->keyboard, -1);
560 break;
561 case keytype_backspace:
562 if (state != WL_POINTER_BUTTON_STATE_PRESSED)
563 break;
564
565 if (strlen(keyboard->keyboard->preedit_string) == 0) {
566 delete_before_cursor(keyboard->keyboard);
567 } else {
568 keyboard->keyboard->preedit_string[strlen(keyboard->keyboard->preedit_string) - 1] = '\0';
569 virtual_keyboard_send_preedit(keyboard->keyboard, -1);
570 }
571 break;
572 case keytype_enter:
573 virtual_keyboard_commit_preedit(keyboard->keyboard);
574 wl_input_method_context_keysym(keyboard->keyboard->context,
575 display_get_serial(keyboard->keyboard->display),
576 time,
577 XKB_KEY_Return, key_state, mod_mask);
578 break;
579 case keytype_space:
580 if (state != WL_POINTER_BUTTON_STATE_PRESSED)
581 break;
582 keyboard->keyboard->preedit_string =
583 append(keyboard->keyboard->preedit_string, " ");
584 virtual_keyboard_commit_preedit(keyboard->keyboard);
585 break;
586 case keytype_switch:
587 if (state != WL_POINTER_BUTTON_STATE_PRESSED)
588 break;
589 switch(keyboard->state) {
590 case KEYBOARD_STATE_DEFAULT:
591 keyboard->state = KEYBOARD_STATE_UPPERCASE;
592 break;
593 case KEYBOARD_STATE_UPPERCASE:
594 keyboard->state = KEYBOARD_STATE_DEFAULT;
595 break;
596 case KEYBOARD_STATE_SYMBOLS:
597 keyboard->state = KEYBOARD_STATE_UPPERCASE;
598 break;
599 }
600 break;
601 case keytype_symbols:
602 if (state != WL_POINTER_BUTTON_STATE_PRESSED)
603 break;
604 switch(keyboard->state) {
605 case KEYBOARD_STATE_DEFAULT:
606 keyboard->state = KEYBOARD_STATE_SYMBOLS;
607 break;
608 case KEYBOARD_STATE_UPPERCASE:
609 keyboard->state = KEYBOARD_STATE_SYMBOLS;
610 break;
611 case KEYBOARD_STATE_SYMBOLS:
612 keyboard->state = KEYBOARD_STATE_DEFAULT;
613 break;
614 }
615 break;
616 case keytype_tab:
617 virtual_keyboard_commit_preedit(keyboard->keyboard);
618 wl_input_method_context_keysym(keyboard->keyboard->context,
619 display_get_serial(keyboard->keyboard->display),
620 time,
621 XKB_KEY_Tab, key_state, mod_mask);
622 break;
623 case keytype_arrow_up:
624 virtual_keyboard_commit_preedit(keyboard->keyboard);
625 wl_input_method_context_keysym(keyboard->keyboard->context,
626 display_get_serial(keyboard->keyboard->display),
627 time,
628 XKB_KEY_Up, key_state, mod_mask);
629 break;
630 case keytype_arrow_left:
631 virtual_keyboard_commit_preedit(keyboard->keyboard);
632 wl_input_method_context_keysym(keyboard->keyboard->context,
633 display_get_serial(keyboard->keyboard->display),
634 time,
635 XKB_KEY_Left, key_state, mod_mask);
636 break;
637 case keytype_arrow_right:
638 virtual_keyboard_commit_preedit(keyboard->keyboard);
639 wl_input_method_context_keysym(keyboard->keyboard->context,
640 display_get_serial(keyboard->keyboard->display),
641 time,
642 XKB_KEY_Right, key_state, mod_mask);
643 break;
644 case keytype_arrow_down:
645 virtual_keyboard_commit_preedit(keyboard->keyboard);
646 wl_input_method_context_keysym(keyboard->keyboard->context,
647 display_get_serial(keyboard->keyboard->display),
648 time,
649 XKB_KEY_Down, key_state, mod_mask);
650 break;
651 case keytype_style:
652 if (state != WL_POINTER_BUTTON_STATE_PRESSED)
653 break;
654 keyboard->keyboard->preedit_style = (keyboard->keyboard->preedit_style + 1) % 8; /* TODO */
655 virtual_keyboard_send_preedit(keyboard->keyboard, -1);
656 break;
657 }
658 }
659
660 static void
button_handler(struct widget * widget,struct input * input,uint32_t time,uint32_t button,enum wl_pointer_button_state state,void * data)661 button_handler(struct widget *widget,
662 struct input *input, uint32_t time,
663 uint32_t button,
664 enum wl_pointer_button_state state, void *data)
665 {
666 struct keyboard *keyboard = data;
667 struct rectangle allocation;
668 int32_t x, y;
669 int row, col;
670 unsigned int i;
671 const struct layout *layout;
672
673 layout = get_current_layout(keyboard->keyboard);
674
675 if (button != BTN_LEFT) {
676 return;
677 }
678
679 input_get_position(input, &x, &y);
680
681 widget_get_allocation(keyboard->widget, &allocation);
682 x -= allocation.x;
683 y -= allocation.y;
684
685 row = y / key_height;
686 col = x / key_width + row * layout->columns;
687 for (i = 0; i < layout->count; ++i) {
688 col -= layout->keys[i].width;
689 if (col < 0) {
690 keyboard_handle_key(keyboard, time, &layout->keys[i], input, state);
691 break;
692 }
693 }
694
695 widget_schedule_redraw(widget);
696 }
697
698 static void
touch_handler(struct input * input,uint32_t time,float x,float y,uint32_t state,void * data)699 touch_handler(struct input *input, uint32_t time,
700 float x, float y, uint32_t state, void *data)
701 {
702 struct keyboard *keyboard = data;
703 struct rectangle allocation;
704 int row, col;
705 unsigned int i;
706 const struct layout *layout;
707
708 layout = get_current_layout(keyboard->keyboard);
709
710 widget_get_allocation(keyboard->widget, &allocation);
711
712 x -= allocation.x;
713 y -= allocation.y;
714
715 row = (int)y / key_height;
716 col = (int)x / key_width + row * layout->columns;
717 for (i = 0; i < layout->count; ++i) {
718 col -= layout->keys[i].width;
719 if (col < 0) {
720 keyboard_handle_key(keyboard, time,
721 &layout->keys[i], input, state);
722 break;
723 }
724 }
725
726 widget_schedule_redraw(keyboard->widget);
727 }
728
729 static void
touch_down_handler(struct widget * widget,struct input * input,uint32_t serial,uint32_t time,int32_t id,float x,float y,void * data)730 touch_down_handler(struct widget *widget, struct input *input,
731 uint32_t serial, uint32_t time, int32_t id,
732 float x, float y, void *data)
733 {
734 touch_handler(input, time, x, y,
735 WL_POINTER_BUTTON_STATE_PRESSED, data);
736 }
737
738 static void
touch_up_handler(struct widget * widget,struct input * input,uint32_t serial,uint32_t time,int32_t id,void * data)739 touch_up_handler(struct widget *widget, struct input *input,
740 uint32_t serial, uint32_t time, int32_t id,
741 void *data)
742 {
743 float x, y;
744
745 input_get_touch(input, id, &x, &y);
746
747 touch_handler(input, time, x, y,
748 WL_POINTER_BUTTON_STATE_RELEASED, data);
749 }
750
751 static void
handle_surrounding_text(void * data,struct wl_input_method_context * context,const char * text,uint32_t cursor,uint32_t anchor)752 handle_surrounding_text(void *data,
753 struct wl_input_method_context *context,
754 const char *text,
755 uint32_t cursor,
756 uint32_t anchor)
757 {
758 struct virtual_keyboard *keyboard = data;
759
760 free(keyboard->surrounding_text);
761 keyboard->surrounding_text = strdup(text);
762
763 keyboard->surrounding_cursor = cursor;
764 }
765
766 static void
handle_reset(void * data,struct wl_input_method_context * context)767 handle_reset(void *data,
768 struct wl_input_method_context *context)
769 {
770 struct virtual_keyboard *keyboard = data;
771
772 dbg("Reset pre-edit buffer\n");
773
774 if (strlen(keyboard->preedit_string)) {
775 free(keyboard->preedit_string);
776 keyboard->preedit_string = strdup("");
777 }
778 }
779
780 static void
handle_content_type(void * data,struct wl_input_method_context * context,uint32_t hint,uint32_t purpose)781 handle_content_type(void *data,
782 struct wl_input_method_context *context,
783 uint32_t hint,
784 uint32_t purpose)
785 {
786 struct virtual_keyboard *keyboard = data;
787
788 keyboard->content_hint = hint;
789 keyboard->content_purpose = purpose;
790 }
791
792 static void
handle_invoke_action(void * data,struct wl_input_method_context * context,uint32_t button,uint32_t index)793 handle_invoke_action(void *data,
794 struct wl_input_method_context *context,
795 uint32_t button,
796 uint32_t index)
797 {
798 struct virtual_keyboard *keyboard = data;
799
800 if (button != BTN_LEFT)
801 return;
802
803 virtual_keyboard_send_preedit(keyboard, index);
804 }
805
806 static void
handle_commit_state(void * data,struct wl_input_method_context * context,uint32_t serial)807 handle_commit_state(void *data,
808 struct wl_input_method_context *context,
809 uint32_t serial)
810 {
811 struct virtual_keyboard *keyboard = data;
812 const struct layout *layout;
813
814 keyboard->serial = serial;
815
816 layout = get_current_layout(keyboard);
817
818 if (keyboard->surrounding_text)
819 dbg("Surrounding text updated: %s\n", keyboard->surrounding_text);
820
821 window_schedule_resize(keyboard->keyboard->window,
822 layout->columns * key_width,
823 layout->rows * key_height);
824
825 wl_input_method_context_language(context, keyboard->serial, layout->language);
826 wl_input_method_context_text_direction(context, keyboard->serial, layout->text_direction);
827
828 widget_schedule_redraw(keyboard->keyboard->widget);
829 }
830
831 static void
handle_preferred_language(void * data,struct wl_input_method_context * context,const char * language)832 handle_preferred_language(void *data,
833 struct wl_input_method_context *context,
834 const char *language)
835 {
836 struct virtual_keyboard *keyboard = data;
837
838 if (keyboard->preferred_language)
839 free(keyboard->preferred_language);
840
841 keyboard->preferred_language = NULL;
842
843 if (language)
844 keyboard->preferred_language = strdup(language);
845 }
846
847 static const struct wl_input_method_context_listener input_method_context_listener = {
848 handle_surrounding_text,
849 handle_reset,
850 handle_content_type,
851 handle_invoke_action,
852 handle_commit_state,
853 handle_preferred_language
854 };
855
856 static void
input_method_activate(void * data,struct wl_input_method * input_method,struct wl_input_method_context * context)857 input_method_activate(void *data,
858 struct wl_input_method *input_method,
859 struct wl_input_method_context *context)
860 {
861 struct virtual_keyboard *keyboard = data;
862 struct wl_array modifiers_map;
863 const struct layout *layout;
864
865 keyboard->keyboard->state = KEYBOARD_STATE_DEFAULT;
866
867 if (keyboard->context)
868 wl_input_method_context_destroy(keyboard->context);
869
870 if (keyboard->preedit_string)
871 free(keyboard->preedit_string);
872
873 keyboard->preedit_string = strdup("");
874 keyboard->content_hint = 0;
875 keyboard->content_purpose = 0;
876 free(keyboard->preferred_language);
877 keyboard->preferred_language = NULL;
878 free(keyboard->surrounding_text);
879 keyboard->surrounding_text = NULL;
880
881 keyboard->serial = 0;
882
883 keyboard->context = context;
884 wl_input_method_context_add_listener(context,
885 &input_method_context_listener,
886 keyboard);
887
888 wl_array_init(&modifiers_map);
889 keysym_modifiers_add(&modifiers_map, "Shift");
890 keysym_modifiers_add(&modifiers_map, "Control");
891 keysym_modifiers_add(&modifiers_map, "Mod1");
892 wl_input_method_context_modifiers_map(context, &modifiers_map);
893 keyboard->keysym.shift_mask = keysym_modifiers_get_mask(&modifiers_map, "Shift");
894 wl_array_release(&modifiers_map);
895
896 layout = get_current_layout(keyboard);
897
898 window_schedule_resize(keyboard->keyboard->window,
899 layout->columns * key_width,
900 layout->rows * key_height);
901
902 wl_input_method_context_language(context, keyboard->serial, layout->language);
903 wl_input_method_context_text_direction(context, keyboard->serial, layout->text_direction);
904
905 widget_schedule_redraw(keyboard->keyboard->widget);
906 }
907
908 static void
input_method_deactivate(void * data,struct wl_input_method * input_method,struct wl_input_method_context * context)909 input_method_deactivate(void *data,
910 struct wl_input_method *input_method,
911 struct wl_input_method_context *context)
912 {
913 struct virtual_keyboard *keyboard = data;
914
915 if (!keyboard->context)
916 return;
917
918 wl_input_method_context_destroy(keyboard->context);
919 keyboard->context = NULL;
920 }
921
922 static const struct wl_input_method_listener input_method_listener = {
923 input_method_activate,
924 input_method_deactivate
925 };
926
927 static void
global_handler(struct display * display,uint32_t name,const char * interface,uint32_t version,void * data)928 global_handler(struct display *display, uint32_t name,
929 const char *interface, uint32_t version, void *data)
930 {
931 struct virtual_keyboard *keyboard = data;
932
933 if (!strcmp(interface, "wl_input_panel")) {
934 keyboard->input_panel =
935 display_bind(display, name, &wl_input_panel_interface, 1);
936 } else if (!strcmp(interface, "wl_input_method")) {
937 keyboard->input_method =
938 display_bind(display, name,
939 &wl_input_method_interface, 1);
940 wl_input_method_add_listener(keyboard->input_method, &input_method_listener, keyboard);
941 }
942 }
943
944 static void
keyboard_create(struct output * output,struct virtual_keyboard * virtual_keyboard)945 keyboard_create(struct output *output, struct virtual_keyboard *virtual_keyboard)
946 {
947 struct keyboard *keyboard;
948 const struct layout *layout;
949 struct wl_input_panel_surface *ips;
950
951 layout = get_current_layout(virtual_keyboard);
952
953 keyboard = xzalloc(sizeof *keyboard);
954 keyboard->keyboard = virtual_keyboard;
955 keyboard->window = window_create_custom(virtual_keyboard->display);
956 keyboard->widget = window_add_widget(keyboard->window, keyboard);
957
958 virtual_keyboard->keyboard = keyboard;
959
960 window_set_title(keyboard->window, "Virtual keyboard");
961 window_set_user_data(keyboard->window, keyboard);
962
963 widget_set_redraw_handler(keyboard->widget, redraw_handler);
964 widget_set_resize_handler(keyboard->widget, resize_handler);
965 widget_set_button_handler(keyboard->widget, button_handler);
966 widget_set_touch_down_handler(keyboard->widget, touch_down_handler);
967 widget_set_touch_up_handler(keyboard->widget, touch_up_handler);
968
969 window_schedule_resize(keyboard->window,
970 layout->columns * key_width,
971 layout->rows * key_height);
972
973
974 ips = wl_input_panel_get_input_panel_surface(virtual_keyboard->input_panel,
975 window_get_wl_surface(keyboard->window));
976
977 wl_input_panel_surface_set_toplevel(ips,
978 output_get_wl_output(output),
979 WL_INPUT_PANEL_SURFACE_POSITION_CENTER_BOTTOM);
980 }
981
982 int
main(int argc,char * argv[])983 main(int argc, char *argv[])
984 {
985 struct virtual_keyboard virtual_keyboard;
986 struct output *output;
987
988 memset(&virtual_keyboard, 0, sizeof virtual_keyboard);
989
990 virtual_keyboard.display = display_create(&argc, argv);
991 if (virtual_keyboard.display == NULL) {
992 fprintf(stderr, "failed to create display: %m\n");
993 return -1;
994 }
995
996 display_set_user_data(virtual_keyboard.display, &virtual_keyboard);
997 display_set_global_handler(virtual_keyboard.display, global_handler);
998
999 if (virtual_keyboard.input_panel == NULL) {
1000 fprintf(stderr, "No input panel global\n");
1001 return -1;
1002 }
1003
1004 output = display_get_output(virtual_keyboard.display);
1005 keyboard_create(output, &virtual_keyboard);
1006
1007 display_run(virtual_keyboard.display);
1008
1009 return 0;
1010 }
1011