source: mainline/uspace/lib/gui/terminal.c@ 7dba813

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 7dba813 was 7dba813, checked in by Petr Koupy <petr.koupy@…>, 13 years ago

Resolved Ticket #485 (Desktop is slow). GUI is usable in Qemu/non-KVM as long as windows are not transparent, rotated or scaled (i.e. if user limits himself only to translation and resizing).
  • Property mode set to 100644
File size: 19.2 KB
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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 <malloc.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 <atomic.h>
48#include <stdarg.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 int term_open(con_srvs_t *, con_srv_t *);
65static int term_close(con_srv_t *);
66static int term_read(con_srv_t *, void *, size_t);
67static int term_write(con_srv_t *, void *, 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 int term_get_pos(con_srv_t *, sysarg_t *, sysarg_t *);
72static int term_get_size(con_srv_t *, sysarg_t *, sysarg_t *);
73static int 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 int term_get_event(con_srv_t *, kbd_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 char term[LOC_NAME_MAXLEN];
107 snprintf(term, LOC_NAME_MAXLEN, "%s/%s", LOCFS_MOUNT_POINT, svc);
108
109 /* Wait for the terminal service to be ready */
110 service_id_t service_id;
111 int rc = loc_service_get_id(svc, &service_id, IPC_FLAG_BLOCKING);
112 if (rc != EOK)
113 return;
114
115 task_spawnl(NULL, APP_GETTERM, APP_GETTERM, "-w", term, app, NULL);
116}
117
118static pixel_t color_table[16] = {
119 [COLOR_BLACK] = PIXEL(255, 0, 0, 0),
120 [COLOR_BLUE] = PIXEL(255, 0, 0, 240),
121 [COLOR_GREEN] = PIXEL(255, 0, 240, 0),
122 [COLOR_CYAN] = PIXEL(255, 0, 240, 240),
123 [COLOR_RED] = PIXEL(255, 240, 0, 0),
124 [COLOR_MAGENTA] = PIXEL(255, 240, 0, 240),
125 [COLOR_YELLOW] = PIXEL(255, 240, 240, 0),
126 [COLOR_WHITE] = PIXEL(255, 240, 240, 240),
127
128 [COLOR_BLACK + 8] = PIXEL(255, 0, 0, 0),
129 [COLOR_BLUE + 8] = PIXEL(255, 0, 0, 255),
130 [COLOR_GREEN + 8] = PIXEL(255, 0, 255, 0),
131 [COLOR_CYAN + 8] = PIXEL(255, 0, 255, 255),
132 [COLOR_RED + 8] = PIXEL(255, 255, 0, 0),
133 [COLOR_MAGENTA + 8] = PIXEL(255, 255, 0, 255),
134 [COLOR_YELLOW + 8] = PIXEL(255, 255, 255, 0),
135 [COLOR_WHITE + 8] = PIXEL(255, 255, 255, 255),
136};
137
138static inline void attrs_rgb(char_attrs_t attrs, pixel_t *bgcolor, pixel_t *fgcolor)
139{
140 switch (attrs.type) {
141 case CHAR_ATTR_STYLE:
142 switch (attrs.val.style) {
143 case STYLE_NORMAL:
144 *bgcolor = color_table[COLOR_WHITE];
145 *fgcolor = color_table[COLOR_BLACK];
146 break;
147 case STYLE_EMPHASIS:
148 *bgcolor = color_table[COLOR_WHITE];
149 *fgcolor = color_table[COLOR_RED];
150 break;
151 case STYLE_INVERTED:
152 *bgcolor = color_table[COLOR_BLACK];
153 *fgcolor = color_table[COLOR_WHITE];
154 break;
155 case STYLE_SELECTED:
156 *bgcolor = color_table[COLOR_RED];
157 *fgcolor = color_table[COLOR_WHITE];
158 break;
159 }
160 break;
161 case CHAR_ATTR_INDEX:
162 *bgcolor = color_table[(attrs.val.index.bgcolor & 7) |
163 ((attrs.val.index.attr & CATTR_BRIGHT) ? 8 : 0)];
164 *fgcolor = color_table[(attrs.val.index.fgcolor & 7) |
165 ((attrs.val.index.attr & CATTR_BRIGHT) ? 8 : 0)];
166 break;
167 case CHAR_ATTR_RGB:
168 *bgcolor = 0xff000000 | attrs.val.rgb.bgcolor;
169 *fgcolor = 0xff000000 | attrs.val.rgb.fgcolor;
170 break;
171 }
172}
173
174static void term_update_char(terminal_t *term, surface_t *surface,
175 sysarg_t sx, sysarg_t sy, sysarg_t col, sysarg_t row)
176{
177 charfield_t *field =
178 chargrid_charfield_at(term->backbuf, col, row);
179
180 bool inverted = chargrid_cursor_at(term->backbuf, col, row);
181
182 sysarg_t bx = sx + (col * FONT_WIDTH);
183 sysarg_t by = sy + (row * FONT_SCANLINES);
184
185 pixel_t bgcolor = 0;
186 pixel_t fgcolor = 0;
187
188 if (inverted)
189 attrs_rgb(field->attrs, &fgcolor, &bgcolor);
190 else
191 attrs_rgb(field->attrs, &bgcolor, &fgcolor);
192
193 // FIXME: Glyph type should be actually uint32_t
194 // for full UTF-32 coverage.
195
196 uint16_t glyph = fb_font_glyph(field->ch);
197
198 for (unsigned int y = 0; y < FONT_SCANLINES; y++) {
199 pixel_t *dst = pixelmap_pixel_at(
200 surface_pixmap_access(surface), bx, by + y);
201 int count = FONT_WIDTH;
202 while (count-- != 0) {
203 *dst++ = (fb_font[glyph][y] & (1 << count)) ? fgcolor : bgcolor;
204 }
205 }
206 surface_add_damaged_region(surface, bx, by, FONT_WIDTH, FONT_SCANLINES);
207}
208
209static bool term_update_scroll(terminal_t *term, surface_t *surface,
210 sysarg_t sx, sysarg_t sy)
211{
212 sysarg_t top_row = chargrid_get_top_row(term->frontbuf);
213
214 if (term->top_row == top_row)
215 return false;
216
217 term->top_row = top_row;
218
219 for (sysarg_t row = 0; row < term->rows; row++) {
220 for (sysarg_t col = 0; col < term->cols; col++) {
221 charfield_t *front_field =
222 chargrid_charfield_at(term->frontbuf, col, row);
223 charfield_t *back_field =
224 chargrid_charfield_at(term->backbuf, col, row);
225 bool update = false;
226
227 if (front_field->ch != back_field->ch) {
228 back_field->ch = front_field->ch;
229 update = true;
230 }
231
232 if (!attrs_same(front_field->attrs, back_field->attrs)) {
233 back_field->attrs = front_field->attrs;
234 update = true;
235 }
236
237 front_field->flags &= ~CHAR_FLAG_DIRTY;
238
239 if (update)
240 term_update_char(term, surface, sx, sy, col, row);
241 }
242 }
243
244 return true;
245}
246
247static bool term_update_cursor(terminal_t *term, surface_t *surface,
248 sysarg_t sx, sysarg_t sy)
249{
250 bool damage = false;
251
252 sysarg_t front_col;
253 sysarg_t front_row;
254 chargrid_get_cursor(term->frontbuf, &front_col, &front_row);
255
256 sysarg_t back_col;
257 sysarg_t back_row;
258 chargrid_get_cursor(term->backbuf, &back_col, &back_row);
259
260 bool front_visibility =
261 chargrid_get_cursor_visibility(term->frontbuf);
262 bool back_visibility =
263 chargrid_get_cursor_visibility(term->backbuf);
264
265 if (front_visibility != back_visibility) {
266 chargrid_set_cursor_visibility(term->backbuf,
267 front_visibility);
268 term_update_char(term, surface, sx, sy, back_col, back_row);
269 damage = true;
270 }
271
272 if ((front_col != back_col) || (front_row != back_row)) {
273 chargrid_set_cursor(term->backbuf, front_col, front_row);
274 term_update_char(term, surface, sx, sy, back_col, back_row);
275 term_update_char(term, surface, sx, sy, front_col, front_row);
276 damage = true;
277 }
278
279 return damage;
280}
281
282static void term_update(terminal_t *term)
283{
284 fibril_mutex_lock(&term->mtx);
285
286 surface_t *surface = window_claim(term->widget.window);
287 if (!surface) {
288 window_yield(term->widget.window);
289 fibril_mutex_unlock(&term->mtx);
290 return;
291 }
292
293 bool damage = false;
294 sysarg_t sx = term->widget.hpos;
295 sysarg_t sy = term->widget.vpos;
296
297 if (term_update_scroll(term, surface, sx, sy)) {
298 damage = true;
299 } else {
300 for (sysarg_t y = 0; y < term->rows; y++) {
301 for (sysarg_t x = 0; x < term->cols; x++) {
302 charfield_t *front_field =
303 chargrid_charfield_at(term->frontbuf, x, y);
304 charfield_t *back_field =
305 chargrid_charfield_at(term->backbuf, x, y);
306 bool update = false;
307
308 if ((front_field->flags & CHAR_FLAG_DIRTY) ==
309 CHAR_FLAG_DIRTY) {
310 if (front_field->ch != back_field->ch) {
311 back_field->ch = front_field->ch;
312 update = true;
313 }
314
315 if (!attrs_same(front_field->attrs,
316 back_field->attrs)) {
317 back_field->attrs = front_field->attrs;
318 update = true;
319 }
320
321 front_field->flags &= ~CHAR_FLAG_DIRTY;
322 }
323
324 if (update) {
325 term_update_char(term, surface, sx, sy, x, y);
326 damage = true;
327 }
328 }
329 }
330 }
331
332 if (term_update_cursor(term, surface, sx, sy))
333 damage = true;
334
335 window_yield(term->widget.window);
336
337 if (damage)
338 window_damage(term->widget.window);
339
340 fibril_mutex_unlock(&term->mtx);
341}
342
343static void term_damage(terminal_t *term)
344{
345 fibril_mutex_lock(&term->mtx);
346
347 surface_t *surface = window_claim(term->widget.window);
348 if (!surface) {
349 window_yield(term->widget.window);
350 fibril_mutex_unlock(&term->mtx);
351 return;
352 }
353
354 sysarg_t sx = term->widget.hpos;
355 sysarg_t sy = term->widget.vpos;
356
357 if (!term_update_scroll(term, surface, sx, sy)) {
358 for (sysarg_t y = 0; y < term->rows; y++) {
359 for (sysarg_t x = 0; x < term->cols; x++) {
360 charfield_t *front_field =
361 chargrid_charfield_at(term->frontbuf, x, y);
362 charfield_t *back_field =
363 chargrid_charfield_at(term->backbuf, x, y);
364
365 back_field->ch = front_field->ch;
366 back_field->attrs = front_field->attrs;
367 front_field->flags &= ~CHAR_FLAG_DIRTY;
368
369 term_update_char(term, surface, sx, sy, x, y);
370 }
371 }
372 }
373
374 term_update_cursor(term, surface, sx, sy);
375
376 window_yield(term->widget.window);
377 window_damage(term->widget.window);
378
379 fibril_mutex_unlock(&term->mtx);
380}
381
382static int term_open(con_srvs_t *srvs, con_srv_t *srv)
383{
384 return EOK;
385}
386
387static int term_close(con_srv_t *srv)
388{
389 return EOK;
390}
391
392static int term_read(con_srv_t *srv, void *buf, size_t size)
393{
394 terminal_t *term = srv_to_terminal(srv);
395 uint8_t *bbuf = buf;
396 size_t pos = 0;
397
398 /*
399 * Read input from keyboard and copy it to the buffer.
400 * We need to handle situation when wchar is split by 2 following
401 * reads.
402 */
403 while (pos < size) {
404 /* Copy to the buffer remaining characters. */
405 while ((pos < size) && (term->char_remains_len > 0)) {
406 bbuf[pos] = term->char_remains[0];
407 pos++;
408
409 /* Unshift the array. */
410 for (size_t i = 1; i < term->char_remains_len; i++)
411 term->char_remains[i - 1] = term->char_remains[i];
412
413 term->char_remains_len--;
414 }
415
416 /* Still not enough? Then get another key from the queue. */
417 if (pos < size) {
418 link_t *link = prodcons_consume(&term->input_pc);
419 kbd_event_t *event = list_get_instance(link, kbd_event_t, link);
420
421 /* Accept key presses of printable chars only. */
422 if ((event->type == KEY_PRESS) && (event->c != 0)) {
423 wchar_t tmp[2] = {
424 event->c,
425 0
426 };
427
428 wstr_to_str(term->char_remains, UTF8_CHAR_BUFFER_SIZE, tmp);
429 term->char_remains_len = str_size(term->char_remains);
430 }
431
432 free(event);
433 }
434 }
435
436 return size;
437}
438
439static void term_write_char(terminal_t *term, wchar_t ch)
440{
441 sysarg_t updated = 0;
442
443 fibril_mutex_lock(&term->mtx);
444
445 switch (ch) {
446 case '\n':
447 updated = chargrid_newline(term->frontbuf);
448 break;
449 case '\r':
450 break;
451 case '\t':
452 updated = chargrid_tabstop(term->frontbuf, 8);
453 break;
454 case '\b':
455 updated = chargrid_backspace(term->frontbuf);
456 break;
457 default:
458 updated = chargrid_putchar(term->frontbuf, ch, true);
459 }
460
461 fibril_mutex_unlock(&term->mtx);
462
463 if (updated > 1)
464 term_update(term);
465}
466
467static int term_write(con_srv_t *srv, void *data, size_t size)
468{
469 terminal_t *term = srv_to_terminal(srv);
470
471 size_t off = 0;
472 while (off < size)
473 term_write_char(term, str_decode(data, &off, size));
474
475 return size;
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 int 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 int 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 int 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 int term_get_event(con_srv_t *srv, kbd_event_t *event)
579{
580 terminal_t *term = srv_to_terminal(srv);
581 link_t *link = prodcons_consume(&term->input_pc);
582 kbd_event_t *kevent = list_get_instance(link, kbd_event_t, link);
583
584 *event = *kevent;
585 free(kevent);
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_handle_keyboard_event(widget_t *widget,
634 kbd_event_t kbd_event)
635{
636 terminal_t *term = (terminal_t *) widget;
637
638 /* Got key press/release event */
639 kbd_event_t *event =
640 (kbd_event_t *) malloc(sizeof(kbd_event_t));
641 if (event == NULL)
642 return;
643
644 link_initialize(&event->link);
645 event->type = kbd_event.type;
646 event->key = kbd_event.key;
647 event->mods = kbd_event.mods;
648 event->c = kbd_event.c;
649
650 prodcons_produce(&term->input_pc, &event->link);
651}
652
653static void terminal_handle_position_event(widget_t *widget, pos_event_t event)
654{
655 /*
656 * Mouse events are ignored so far.
657 * There is no consumer for it.
658 */
659}
660
661static void term_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
662{
663 terminal_t *term = NULL;
664
665 list_foreach(terms, link) {
666 terminal_t *cur = list_get_instance(link, terminal_t, link);
667
668 if (cur->dsid == (service_id_t) IPC_GET_ARG1(*icall)) {
669 term = cur;
670 break;
671 }
672 }
673
674 if (term == NULL) {
675 async_answer_0(iid, ENOENT);
676 return;
677 }
678
679 if (atomic_postinc(&term->refcnt) == 0)
680 chargrid_set_cursor_visibility(term->frontbuf, true);
681
682 con_conn(iid, icall, &term->srvs);
683}
684
685bool init_terminal(terminal_t *term, widget_t *parent, sysarg_t width,
686 sysarg_t height)
687{
688 widget_init(&term->widget, parent);
689
690 link_initialize(&term->link);
691 fibril_mutex_initialize(&term->mtx);
692 atomic_set(&term->refcnt, 0);
693
694 prodcons_initialize(&term->input_pc);
695 term->char_remains_len = 0;
696
697 term->widget.width = width;
698 term->widget.height = height;
699 term->widget.width_ideal = width;
700 term->widget.height_ideal = height;
701
702 term->widget.destroy = terminal_destroy;
703 term->widget.reconfigure = terminal_reconfigure;
704 term->widget.rearrange = terminal_rearrange;
705 term->widget.repaint = terminal_repaint;
706 term->widget.handle_keyboard_event = terminal_handle_keyboard_event;
707 term->widget.handle_position_event = terminal_handle_position_event;
708
709 term->cols = width / FONT_WIDTH;
710 term->rows = height / FONT_SCANLINES;
711
712 term->frontbuf = NULL;
713 term->backbuf = NULL;
714
715 term->frontbuf = chargrid_create(term->cols, term->rows,
716 CHARGRID_FLAG_NONE);
717 if (!term->frontbuf) {
718 widget_deinit(&term->widget);
719 return false;
720 }
721
722 term->backbuf = chargrid_create(term->cols, term->rows,
723 CHARGRID_FLAG_NONE);
724 if (!term->backbuf) {
725 widget_deinit(&term->widget);
726 return false;
727 }
728
729 chargrid_clear(term->frontbuf);
730 chargrid_clear(term->backbuf);
731 term->top_row = 0;
732
733 async_set_client_connection(term_connection);
734 con_srvs_init(&term->srvs);
735 term->srvs.ops = &con_ops;
736 term->srvs.sarg = term;
737
738 int rc = loc_server_register(NAME);
739 if (rc != EOK) {
740 widget_deinit(&term->widget);
741 return false;
742 }
743
744 char vc[LOC_NAME_MAXLEN + 1];
745 snprintf(vc, LOC_NAME_MAXLEN, "%s/%" PRIu64, NAMESPACE,
746 task_get_id());
747
748 rc = loc_service_register(vc, &term->dsid);
749 if (rc != EOK) {
750 widget_deinit(&term->widget);
751 return false;
752 }
753
754 list_append(&term->link, &terms);
755 getterm(vc, "/app/bdsh");
756
757 return true;
758}
759
760terminal_t *create_terminal(widget_t *parent, sysarg_t width, sysarg_t height)
761{
762 terminal_t *term = (terminal_t *) malloc(sizeof(terminal_t));
763 if (!term)
764 return NULL;
765
766 bool ret = init_terminal(term, parent, width, height);
767 if (!ret) {
768 free(term);
769 return NULL;
770 }
771
772 return term;
773}
774
775/** @}
776 */
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