source: mainline/uspace/lib/gui/terminal.c@ e0e5e6f5

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since e0e5e6f5 was 508b0df1, checked in by Jiří Zárevúcky <jiri.zarevucky@…>, 7 years ago

Remove uspace <atomic.h>, use <stdatomic.h> instead
  • Property mode set to 100644
File size: 19.7 KB
Line 
1/*
2 * Copyright (c) 2012 Petr Koupy
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup gui
30 * @{
31 */
32/**
33 * @file
34 */
35
36#include <errno.h>
37#include <stdlib.h>
38#include <io/chargrid.h>
39#include <surface.h>
40#include <gfx/font-8x16.h>
41#include <io/con_srv.h>
42#include <io/concaps.h>
43#include <io/console.h>
44#include <task.h>
45#include <adt/list.h>
46#include <adt/prodcons.h>
47#include <stdarg.h>
48#include <str.h>
49#include "window.h"
50#include "terminal.h"
51
52#define NAME "vterm"
53#define NAMESPACE "vterm"
54
55#define LOCFS_MOUNT_POINT "/loc"
56
57#define APP_GETTERM "/app/getterm"
58
59#define TERM_CAPS \
60 (CONSOLE_CAP_STYLE | CONSOLE_CAP_INDEXED | CONSOLE_CAP_RGB)
61
62static LIST_INITIALIZE(terms);
63
64static errno_t term_open(con_srvs_t *, con_srv_t *);
65static errno_t term_close(con_srv_t *);
66static errno_t term_read(con_srv_t *, void *, size_t, size_t *);
67static errno_t term_write(con_srv_t *, void *, size_t, size_t *);
68static void term_sync(con_srv_t *);
69static void term_clear(con_srv_t *);
70static void term_set_pos(con_srv_t *, sysarg_t col, sysarg_t row);
71static errno_t term_get_pos(con_srv_t *, sysarg_t *, sysarg_t *);
72static errno_t term_get_size(con_srv_t *, sysarg_t *, sysarg_t *);
73static errno_t term_get_color_cap(con_srv_t *, console_caps_t *);
74static void term_set_style(con_srv_t *, console_style_t);
75static void term_set_color(con_srv_t *, console_color_t, console_color_t,
76 console_color_attr_t);
77static void term_set_rgb_color(con_srv_t *, pixel_t, pixel_t);
78static void term_set_cursor_visibility(con_srv_t *, bool);
79static errno_t term_get_event(con_srv_t *, cons_event_t *);
80
81static con_ops_t con_ops = {
82 .open = term_open,
83 .close = term_close,
84 .read = term_read,
85 .write = term_write,
86 .sync = term_sync,
87 .clear = term_clear,
88 .set_pos = term_set_pos,
89 .get_pos = term_get_pos,
90 .get_size = term_get_size,
91 .get_color_cap = term_get_color_cap,
92 .set_style = term_set_style,
93 .set_color = term_set_color,
94 .set_rgb_color = term_set_rgb_color,
95 .set_cursor_visibility = term_set_cursor_visibility,
96 .get_event = term_get_event
97};
98
99static terminal_t *srv_to_terminal(con_srv_t *srv)
100{
101 return srv->srvs->sarg;
102}
103
104static void getterm(const char *svc, const char *app)
105{
106 task_spawnl(NULL, NULL, APP_GETTERM, APP_GETTERM, svc,
107 LOCFS_MOUNT_POINT, "--msg", "--wait", "--", app, NULL);
108}
109
110static pixel_t color_table[16] = {
111 [COLOR_BLACK] = PIXEL(255, 0, 0, 0),
112 [COLOR_BLUE] = PIXEL(255, 0, 0, 240),
113 [COLOR_GREEN] = PIXEL(255, 0, 240, 0),
114 [COLOR_CYAN] = PIXEL(255, 0, 240, 240),
115 [COLOR_RED] = PIXEL(255, 240, 0, 0),
116 [COLOR_MAGENTA] = PIXEL(255, 240, 0, 240),
117 [COLOR_YELLOW] = PIXEL(255, 240, 240, 0),
118 [COLOR_WHITE] = PIXEL(255, 240, 240, 240),
119
120 [COLOR_BLACK + 8] = PIXEL(255, 0, 0, 0),
121 [COLOR_BLUE + 8] = PIXEL(255, 0, 0, 255),
122 [COLOR_GREEN + 8] = PIXEL(255, 0, 255, 0),
123 [COLOR_CYAN + 8] = PIXEL(255, 0, 255, 255),
124 [COLOR_RED + 8] = PIXEL(255, 255, 0, 0),
125 [COLOR_MAGENTA + 8] = PIXEL(255, 255, 0, 255),
126 [COLOR_YELLOW + 8] = PIXEL(255, 255, 255, 0),
127 [COLOR_WHITE + 8] = PIXEL(255, 255, 255, 255),
128};
129
130static inline void attrs_rgb(char_attrs_t attrs, pixel_t *bgcolor, pixel_t *fgcolor)
131{
132 switch (attrs.type) {
133 case CHAR_ATTR_STYLE:
134 switch (attrs.val.style) {
135 case STYLE_NORMAL:
136 *bgcolor = color_table[COLOR_WHITE];
137 *fgcolor = color_table[COLOR_BLACK];
138 break;
139 case STYLE_EMPHASIS:
140 *bgcolor = color_table[COLOR_WHITE];
141 *fgcolor = color_table[COLOR_RED];
142 break;
143 case STYLE_INVERTED:
144 *bgcolor = color_table[COLOR_BLACK];
145 *fgcolor = color_table[COLOR_WHITE];
146 break;
147 case STYLE_SELECTED:
148 *bgcolor = color_table[COLOR_RED];
149 *fgcolor = color_table[COLOR_WHITE];
150 break;
151 }
152 break;
153 case CHAR_ATTR_INDEX:
154 *bgcolor = color_table[(attrs.val.index.bgcolor & 7) |
155 ((attrs.val.index.attr & CATTR_BRIGHT) ? 8 : 0)];
156 *fgcolor = color_table[(attrs.val.index.fgcolor & 7) |
157 ((attrs.val.index.attr & CATTR_BRIGHT) ? 8 : 0)];
158 break;
159 case CHAR_ATTR_RGB:
160 *bgcolor = 0xff000000 | attrs.val.rgb.bgcolor;
161 *fgcolor = 0xff000000 | attrs.val.rgb.fgcolor;
162 break;
163 }
164}
165
166static void term_update_char(terminal_t *term, surface_t *surface,
167 sysarg_t sx, sysarg_t sy, sysarg_t col, sysarg_t row)
168{
169 charfield_t *field =
170 chargrid_charfield_at(term->backbuf, col, row);
171
172 bool inverted = chargrid_cursor_at(term->backbuf, col, row);
173
174 sysarg_t bx = sx + (col * FONT_WIDTH);
175 sysarg_t by = sy + (row * FONT_SCANLINES);
176
177 pixel_t bgcolor = 0;
178 pixel_t fgcolor = 0;
179
180 if (inverted)
181 attrs_rgb(field->attrs, &fgcolor, &bgcolor);
182 else
183 attrs_rgb(field->attrs, &bgcolor, &fgcolor);
184
185 // FIXME: Glyph type should be actually uint32_t
186 // for full UTF-32 coverage.
187
188 uint16_t glyph = fb_font_glyph(field->ch, NULL);
189
190 for (unsigned int y = 0; y < FONT_SCANLINES; y++) {
191 pixel_t *dst = pixelmap_pixel_at(
192 surface_pixmap_access(surface), bx, by + y);
193 pixel_t *dst_max = pixelmap_pixel_at(
194 surface_pixmap_access(surface), bx + FONT_WIDTH - 1, by + y);
195 if (!dst || !dst_max)
196 continue;
197 int count = FONT_WIDTH;
198 while (count-- != 0) {
199 *dst++ = (fb_font[glyph][y] & (1 << count)) ? fgcolor : bgcolor;
200 }
201 }
202 surface_add_damaged_region(surface, bx, by, FONT_WIDTH, FONT_SCANLINES);
203}
204
205static bool term_update_scroll(terminal_t *term, surface_t *surface,
206 sysarg_t sx, sysarg_t sy)
207{
208 sysarg_t top_row = chargrid_get_top_row(term->frontbuf);
209
210 if (term->top_row == top_row)
211 return false;
212
213 term->top_row = top_row;
214
215 for (sysarg_t row = 0; row < term->rows; row++) {
216 for (sysarg_t col = 0; col < term->cols; col++) {
217 charfield_t *front_field =
218 chargrid_charfield_at(term->frontbuf, col, row);
219 charfield_t *back_field =
220 chargrid_charfield_at(term->backbuf, col, row);
221 bool update = false;
222
223 if (front_field->ch != back_field->ch) {
224 back_field->ch = front_field->ch;
225 update = true;
226 }
227
228 if (!attrs_same(front_field->attrs, back_field->attrs)) {
229 back_field->attrs = front_field->attrs;
230 update = true;
231 }
232
233 front_field->flags &= ~CHAR_FLAG_DIRTY;
234
235 if (update)
236 term_update_char(term, surface, sx, sy, col, row);
237 }
238 }
239
240 return true;
241}
242
243static bool term_update_cursor(terminal_t *term, surface_t *surface,
244 sysarg_t sx, sysarg_t sy)
245{
246 bool damage = false;
247
248 sysarg_t front_col;
249 sysarg_t front_row;
250 chargrid_get_cursor(term->frontbuf, &front_col, &front_row);
251
252 sysarg_t back_col;
253 sysarg_t back_row;
254 chargrid_get_cursor(term->backbuf, &back_col, &back_row);
255
256 bool front_visibility =
257 chargrid_get_cursor_visibility(term->frontbuf) &&
258 term->widget.window->is_focused;
259 bool back_visibility =
260 chargrid_get_cursor_visibility(term->backbuf);
261
262 if (front_visibility != back_visibility) {
263 chargrid_set_cursor_visibility(term->backbuf,
264 front_visibility);
265 term_update_char(term, surface, sx, sy, back_col, back_row);
266 damage = true;
267 }
268
269 if ((front_col != back_col) || (front_row != back_row)) {
270 chargrid_set_cursor(term->backbuf, front_col, front_row);
271 term_update_char(term, surface, sx, sy, back_col, back_row);
272 term_update_char(term, surface, sx, sy, front_col, front_row);
273 damage = true;
274 }
275
276 return damage;
277}
278
279static void term_update(terminal_t *term)
280{
281 fibril_mutex_lock(&term->mtx);
282
283 surface_t *surface = window_claim(term->widget.window);
284 if (!surface) {
285 window_yield(term->widget.window);
286 fibril_mutex_unlock(&term->mtx);
287 return;
288 }
289
290 bool damage = false;
291 sysarg_t sx = term->widget.hpos;
292 sysarg_t sy = term->widget.vpos;
293
294 if (term_update_scroll(term, surface, sx, sy)) {
295 damage = true;
296 } else {
297 for (sysarg_t y = 0; y < term->rows; y++) {
298 for (sysarg_t x = 0; x < term->cols; x++) {
299 charfield_t *front_field =
300 chargrid_charfield_at(term->frontbuf, x, y);
301 charfield_t *back_field =
302 chargrid_charfield_at(term->backbuf, x, y);
303 bool update = false;
304
305 if ((front_field->flags & CHAR_FLAG_DIRTY) ==
306 CHAR_FLAG_DIRTY) {
307 if (front_field->ch != back_field->ch) {
308 back_field->ch = front_field->ch;
309 update = true;
310 }
311
312 if (!attrs_same(front_field->attrs,
313 back_field->attrs)) {
314 back_field->attrs = front_field->attrs;
315 update = true;
316 }
317
318 front_field->flags &= ~CHAR_FLAG_DIRTY;
319 }
320
321 if (update) {
322 term_update_char(term, surface, sx, sy, x, y);
323 damage = true;
324 }
325 }
326 }
327 }
328
329 if (term_update_cursor(term, surface, sx, sy))
330 damage = true;
331
332 window_yield(term->widget.window);
333
334 if (damage)
335 window_damage(term->widget.window);
336
337 fibril_mutex_unlock(&term->mtx);
338}
339
340static void term_damage(terminal_t *term)
341{
342 fibril_mutex_lock(&term->mtx);
343
344 surface_t *surface = window_claim(term->widget.window);
345 if (!surface) {
346 window_yield(term->widget.window);
347 fibril_mutex_unlock(&term->mtx);
348 return;
349 }
350
351 sysarg_t sx = term->widget.hpos;
352 sysarg_t sy = term->widget.vpos;
353
354 if (!term_update_scroll(term, surface, sx, sy)) {
355 for (sysarg_t y = 0; y < term->rows; y++) {
356 for (sysarg_t x = 0; x < term->cols; x++) {
357 charfield_t *front_field =
358 chargrid_charfield_at(term->frontbuf, x, y);
359 charfield_t *back_field =
360 chargrid_charfield_at(term->backbuf, x, y);
361
362 back_field->ch = front_field->ch;
363 back_field->attrs = front_field->attrs;
364 front_field->flags &= ~CHAR_FLAG_DIRTY;
365
366 term_update_char(term, surface, sx, sy, x, y);
367 }
368 }
369 }
370
371 term_update_cursor(term, surface, sx, sy);
372
373 window_yield(term->widget.window);
374 window_damage(term->widget.window);
375
376 fibril_mutex_unlock(&term->mtx);
377}
378
379static errno_t term_open(con_srvs_t *srvs, con_srv_t *srv)
380{
381 return EOK;
382}
383
384static errno_t term_close(con_srv_t *srv)
385{
386 return EOK;
387}
388
389static errno_t term_read(con_srv_t *srv, void *buf, size_t size, size_t *nread)
390{
391 terminal_t *term = srv_to_terminal(srv);
392 uint8_t *bbuf = buf;
393 size_t pos = 0;
394
395 /*
396 * Read input from keyboard and copy it to the buffer.
397 * We need to handle situation when wchar is split by 2 following
398 * reads.
399 */
400 while (pos < size) {
401 /* Copy to the buffer remaining characters. */
402 while ((pos < size) && (term->char_remains_len > 0)) {
403 bbuf[pos] = term->char_remains[0];
404 pos++;
405
406 /* Unshift the array. */
407 for (size_t i = 1; i < term->char_remains_len; i++)
408 term->char_remains[i - 1] = term->char_remains[i];
409
410 term->char_remains_len--;
411 }
412
413 /* Still not enough? Then get another key from the queue. */
414 if (pos < size) {
415 link_t *link = prodcons_consume(&term->input_pc);
416 cons_event_t *event = list_get_instance(link, cons_event_t, link);
417
418 /* Accept key presses of printable chars only. */
419 if (event->type == CEV_KEY && event->ev.key.type == KEY_PRESS &&
420 event->ev.key.c != 0) {
421 wchar_t tmp[2] = {
422 event->ev.key.c,
423 0
424 };
425
426 wstr_to_str(term->char_remains, UTF8_CHAR_BUFFER_SIZE, tmp);
427 term->char_remains_len = str_size(term->char_remains);
428 }
429
430 free(event);
431 }
432 }
433
434 *nread = size;
435 return EOK;
436}
437
438static void term_write_char(terminal_t *term, wchar_t ch)
439{
440 sysarg_t updated = 0;
441
442 fibril_mutex_lock(&term->mtx);
443
444 switch (ch) {
445 case '\n':
446 updated = chargrid_newline(term->frontbuf);
447 break;
448 case '\r':
449 break;
450 case '\t':
451 updated = chargrid_tabstop(term->frontbuf, 8);
452 break;
453 case '\b':
454 updated = chargrid_backspace(term->frontbuf);
455 break;
456 default:
457 updated = chargrid_putwchar(term->frontbuf, ch, true);
458 }
459
460 fibril_mutex_unlock(&term->mtx);
461
462 if (updated > 1)
463 term_update(term);
464}
465
466static errno_t term_write(con_srv_t *srv, void *data, size_t size, size_t *nwritten)
467{
468 terminal_t *term = srv_to_terminal(srv);
469
470 size_t off = 0;
471 while (off < size)
472 term_write_char(term, str_decode(data, &off, size));
473
474 *nwritten = size;
475 return EOK;
476}
477
478static void term_sync(con_srv_t *srv)
479{
480 terminal_t *term = srv_to_terminal(srv);
481
482 term_update(term);
483}
484
485static void term_clear(con_srv_t *srv)
486{
487 terminal_t *term = srv_to_terminal(srv);
488
489 fibril_mutex_lock(&term->mtx);
490 chargrid_clear(term->frontbuf);
491 fibril_mutex_unlock(&term->mtx);
492
493 term_update(term);
494}
495
496static void term_set_pos(con_srv_t *srv, sysarg_t col, sysarg_t row)
497{
498 terminal_t *term = srv_to_terminal(srv);
499
500 fibril_mutex_lock(&term->mtx);
501 chargrid_set_cursor(term->frontbuf, col, row);
502 fibril_mutex_unlock(&term->mtx);
503
504 term_update(term);
505}
506
507static errno_t term_get_pos(con_srv_t *srv, sysarg_t *col, sysarg_t *row)
508{
509 terminal_t *term = srv_to_terminal(srv);
510
511 fibril_mutex_lock(&term->mtx);
512 chargrid_get_cursor(term->frontbuf, col, row);
513 fibril_mutex_unlock(&term->mtx);
514
515 return EOK;
516}
517
518static errno_t term_get_size(con_srv_t *srv, sysarg_t *cols, sysarg_t *rows)
519{
520 terminal_t *term = srv_to_terminal(srv);
521
522 fibril_mutex_lock(&term->mtx);
523 *cols = term->cols;
524 *rows = term->rows;
525 fibril_mutex_unlock(&term->mtx);
526
527 return EOK;
528}
529
530static errno_t term_get_color_cap(con_srv_t *srv, console_caps_t *caps)
531{
532 (void) srv;
533 *caps = TERM_CAPS;
534
535 return EOK;
536}
537
538static void term_set_style(con_srv_t *srv, console_style_t style)
539{
540 terminal_t *term = srv_to_terminal(srv);
541
542 fibril_mutex_lock(&term->mtx);
543 chargrid_set_style(term->frontbuf, style);
544 fibril_mutex_unlock(&term->mtx);
545}
546
547static void term_set_color(con_srv_t *srv, console_color_t bgcolor,
548 console_color_t fgcolor, console_color_attr_t attr)
549{
550 terminal_t *term = srv_to_terminal(srv);
551
552 fibril_mutex_lock(&term->mtx);
553 chargrid_set_color(term->frontbuf, bgcolor, fgcolor, attr);
554 fibril_mutex_unlock(&term->mtx);
555}
556
557static void term_set_rgb_color(con_srv_t *srv, pixel_t bgcolor,
558 pixel_t fgcolor)
559{
560 terminal_t *term = srv_to_terminal(srv);
561
562 fibril_mutex_lock(&term->mtx);
563 chargrid_set_rgb_color(term->frontbuf, bgcolor, fgcolor);
564 fibril_mutex_unlock(&term->mtx);
565}
566
567static void term_set_cursor_visibility(con_srv_t *srv, bool visible)
568{
569 terminal_t *term = srv_to_terminal(srv);
570
571 fibril_mutex_lock(&term->mtx);
572 chargrid_set_cursor_visibility(term->frontbuf, visible);
573 fibril_mutex_unlock(&term->mtx);
574
575 term_update(term);
576}
577
578static errno_t term_get_event(con_srv_t *srv, cons_event_t *event)
579{
580 terminal_t *term = srv_to_terminal(srv);
581 link_t *link = prodcons_consume(&term->input_pc);
582 cons_event_t *ev = list_get_instance(link, cons_event_t, link);
583
584 *event = *ev;
585 free(ev);
586 return EOK;
587}
588
589void deinit_terminal(terminal_t *term)
590{
591 list_remove(&term->link);
592 widget_deinit(&term->widget);
593
594 if (term->frontbuf)
595 chargrid_destroy(term->frontbuf);
596
597 if (term->backbuf)
598 chargrid_destroy(term->backbuf);
599}
600
601static void terminal_destroy(widget_t *widget)
602{
603 terminal_t *term = (terminal_t *) widget;
604
605 deinit_terminal(term);
606 free(term);
607}
608
609static void terminal_reconfigure(widget_t *widget)
610{
611 /* No-op */
612}
613
614static void terminal_rearrange(widget_t *widget, sysarg_t hpos, sysarg_t vpos,
615 sysarg_t width, sysarg_t height)
616{
617 terminal_t *term = (terminal_t *) widget;
618
619 widget_modify(widget, hpos, vpos, width, height);
620 widget->width_ideal = width;
621 widget->height_ideal = height;
622
623 term_damage(term);
624}
625
626static void terminal_repaint(widget_t *widget)
627{
628 terminal_t *term = (terminal_t *) widget;
629
630 term_damage(term);
631}
632
633static void terminal_queue_cons_event(terminal_t *term, cons_event_t *ev)
634{
635 /* Got key press/release event */
636 cons_event_t *event =
637 (cons_event_t *) malloc(sizeof(cons_event_t));
638 if (event == NULL)
639 return;
640
641 *event = *ev;
642 link_initialize(&event->link);
643
644 prodcons_produce(&term->input_pc, &event->link);
645}
646
647/* Got key press/release event */
648static void terminal_handle_keyboard_event(widget_t *widget,
649 kbd_event_t kbd_event)
650{
651 terminal_t *term = (terminal_t *) widget;
652 cons_event_t event;
653
654 event.type = CEV_KEY;
655 event.ev.key = kbd_event;
656
657 terminal_queue_cons_event(term, &event);
658}
659
660static void terminal_handle_position_event(widget_t *widget, pos_event_t pos_event)
661{
662 cons_event_t event;
663 terminal_t *term = (terminal_t *) widget;
664 sysarg_t sx = term->widget.hpos;
665 sysarg_t sy = term->widget.vpos;
666
667 if (pos_event.type == POS_PRESS) {
668 event.type = CEV_POS;
669 event.ev.pos.type = pos_event.type;
670 event.ev.pos.pos_id = pos_event.pos_id;
671 event.ev.pos.btn_num = pos_event.btn_num;
672
673 event.ev.pos.hpos = (pos_event.hpos - sx) / FONT_WIDTH;
674 event.ev.pos.vpos = (pos_event.vpos - sy) / FONT_SCANLINES;
675 terminal_queue_cons_event(term, &event);
676 }
677}
678
679static void term_connection(ipc_call_t *icall, void *arg)
680{
681 terminal_t *term = NULL;
682
683 list_foreach(terms, link, terminal_t, cur) {
684 if (cur->dsid == (service_id_t) IPC_GET_ARG2(*icall)) {
685 term = cur;
686 break;
687 }
688 }
689
690 if (term == NULL) {
691 async_answer_0(icall, ENOENT);
692 return;
693 }
694
695 if (!atomic_flag_test_and_set(&term->refcnt))
696 chargrid_set_cursor_visibility(term->frontbuf, true);
697
698 con_conn(icall, &term->srvs);
699}
700
701bool init_terminal(terminal_t *term, widget_t *parent, const void *data,
702 sysarg_t width, sysarg_t height)
703{
704 widget_init(&term->widget, parent, data);
705
706 link_initialize(&term->link);
707 fibril_mutex_initialize(&term->mtx);
708 atomic_flag_clear(&term->refcnt);
709
710 prodcons_initialize(&term->input_pc);
711 term->char_remains_len = 0;
712
713 term->widget.width = width;
714 term->widget.height = height;
715 term->widget.width_ideal = width;
716 term->widget.height_ideal = height;
717
718 term->widget.destroy = terminal_destroy;
719 term->widget.reconfigure = terminal_reconfigure;
720 term->widget.rearrange = terminal_rearrange;
721 term->widget.repaint = terminal_repaint;
722 term->widget.handle_keyboard_event = terminal_handle_keyboard_event;
723 term->widget.handle_position_event = terminal_handle_position_event;
724
725 term->cols = width / FONT_WIDTH;
726 term->rows = height / FONT_SCANLINES;
727
728 term->frontbuf = NULL;
729 term->backbuf = NULL;
730
731 term->frontbuf = chargrid_create(term->cols, term->rows,
732 CHARGRID_FLAG_NONE);
733 if (!term->frontbuf) {
734 widget_deinit(&term->widget);
735 return false;
736 }
737
738 term->backbuf = chargrid_create(term->cols, term->rows,
739 CHARGRID_FLAG_NONE);
740 if (!term->backbuf) {
741 widget_deinit(&term->widget);
742 return false;
743 }
744
745 chargrid_clear(term->frontbuf);
746 chargrid_clear(term->backbuf);
747 term->top_row = 0;
748
749 async_set_fallback_port_handler(term_connection, NULL);
750 con_srvs_init(&term->srvs);
751 term->srvs.ops = &con_ops;
752 term->srvs.sarg = term;
753
754 errno_t rc = loc_server_register(NAME);
755 if (rc != EOK) {
756 widget_deinit(&term->widget);
757 return false;
758 }
759
760 char vc[LOC_NAME_MAXLEN + 1];
761 snprintf(vc, LOC_NAME_MAXLEN, "%s/%" PRIu64, NAMESPACE,
762 task_get_id());
763
764 rc = loc_service_register(vc, &term->dsid);
765 if (rc != EOK) {
766 widget_deinit(&term->widget);
767 return false;
768 }
769
770 list_append(&term->link, &terms);
771 getterm(vc, "/app/bdsh");
772
773 return true;
774}
775
776terminal_t *create_terminal(widget_t *parent, const void *data, sysarg_t width,
777 sysarg_t height)
778{
779 terminal_t *term = (terminal_t *) malloc(sizeof(terminal_t));
780 if (!term)
781 return NULL;
782
783 bool ret = init_terminal(term, parent, data, width, height);
784 if (!ret) {
785 free(term);
786 return NULL;
787 }
788
789 return term;
790}
791
792/** @}
793 */
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