2 5e11c00c 2021-03-02 op * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 5e11c00c 2021-03-02 op * Permission to use, copy, modify, and distribute this software for any
5 5e11c00c 2021-03-02 op * purpose with or without fee is hereby granted, provided that the above
6 5e11c00c 2021-03-02 op * copyright notice and this permission notice appear in all copies.
8 5e11c00c 2021-03-02 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 5e11c00c 2021-03-02 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 5e11c00c 2021-03-02 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 5e11c00c 2021-03-02 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 5e11c00c 2021-03-02 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 5e11c00c 2021-03-02 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 5e11c00c 2021-03-02 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 1d08c280 2021-03-06 op * Ncurses UI for telescope.
21 1d08c280 2021-03-06 op * Text wrapping
22 1d08c280 2021-03-06 op * =============
24 1d08c280 2021-03-06 op * There's a simple text wrapping algorithm.
26 1d08c280 2021-03-06 op * 1. if it's a line in a pre-formatted block:
27 1d08c280 2021-03-06 op * a. hard wrap.
29 1d08c280 2021-03-06 op * 2. there is enough room for the next word?
30 1d08c280 2021-03-06 op * a. yes: render it
31 1d08c280 2021-03-06 op * b. no: break the current line.
32 1d08c280 2021-03-06 op * i. while there isn't enough space to draw the current
33 1d08c280 2021-03-06 op * word, hard-wrap it
34 1d08c280 2021-03-06 op * ii. draw the remainder of the current word (can be the
35 1d08c280 2021-03-06 op * the entirely)
36 1d08c280 2021-03-06 op * 3. render the spaces after the word
37 1d08c280 2021-03-06 op * a. but if there is not enough room break the line and
42 1d08c280 2021-03-06 op * Text scrolling
43 1d08c280 2021-03-06 op * ==============
45 1d08c280 2021-03-06 op * ncurses allows you to scroll a window, but when a line goes out of
46 1d08c280 2021-03-06 op * the visible area it's forgotten. We keep a list of formatted lines
47 1d08c280 2021-03-06 op * (``visual lines'') that we know fits in the window, and draw them.
48 1d08c280 2021-03-06 op * This way is easy to scroll: just call wscrl and then render the
49 1d08c280 2021-03-06 op * first/last line!
51 1d08c280 2021-03-06 op * This means that on every resize we have to clear our list of lines
52 1d08c280 2021-03-06 op * and re-render everything. A clever approach would be to do this
53 1d08c280 2021-03-06 op * ``on-demand''.
55 1d08c280 2021-03-06 op * TODO: make the text formatting on-demand.
59 5e11c00c 2021-03-02 op #include <telescope.h>
61 5e11c00c 2021-03-02 op #include <curses.h>
62 5e11c00c 2021-03-02 op #include <event.h>
63 5e11c00c 2021-03-02 op #include <locale.h>
64 5e11c00c 2021-03-02 op #include <signal.h>
65 7953dd72 2021-03-07 op #include <stdarg.h>
66 eb259e66 2021-03-02 op #include <stdlib.h>
67 eb259e66 2021-03-02 op #include <string.h>
69 5e11c00c 2021-03-02 op #define TAB_CURRENT 0x1
71 eb259e66 2021-03-02 op #define CTRL(x) ((x)&0x1F)
73 1d08c280 2021-03-06 op #define MIN(a, b) ((a) < (b) ? (a) : (b))
74 1d08c280 2021-03-06 op #define MAX(a, b) ((a) > (b) ? (a) : (b))
76 5e11c00c 2021-03-02 op static struct event stdioev, winchev;
78 1d08c280 2021-03-06 op static int push_line(struct tab*, const struct line*, const char*, size_t);
79 1d08c280 2021-03-06 op static void empty_vlist(struct tab*);
80 48e9d457 2021-03-06 op static void restore_cursor(struct tab *);
81 48e9d457 2021-03-06 op static void cmd_previous_line(int);
82 48e9d457 2021-03-06 op static void cmd_next_line(int);
83 48e9d457 2021-03-06 op static void cmd_forward_char(int);
84 48e9d457 2021-03-06 op static void cmd_backward_char(int);
85 48e9d457 2021-03-06 op static void cmd_redraw(int);
86 48e9d457 2021-03-06 op static void cmd_scroll_down(int);
87 48e9d457 2021-03-06 op static void cmd_scroll_up(int);
88 48e9d457 2021-03-06 op static void cmd_kill_telescope(int);
89 48e9d457 2021-03-06 op static struct line *nth_line(struct tab*, size_t);
90 5e11c00c 2021-03-02 op static struct tab *current_tab(void);
91 5e11c00c 2021-03-02 op static void dispatch_stdio(int, short, void*);
92 a6d450c1 2021-03-06 op static void handle_clear_minibuf(int, short, void*);
93 5e11c00c 2021-03-02 op static void handle_resize(int, short, void*);
94 eb259e66 2021-03-02 op static int word_bourdaries(const char*, const char*, const char**, const char**);
95 1d08c280 2021-03-06 op static void wrap_text(struct tab*, const char*, struct line*);
96 1d08c280 2021-03-06 op static int hardwrap_text(struct tab*, struct line*);
97 1d08c280 2021-03-06 op static int wrap_page(struct tab*);
98 48e9d457 2021-03-06 op static void print_line(struct line*);
99 5e11c00c 2021-03-02 op static void redraw_tab(struct tab*);
100 7953dd72 2021-03-07 op static void message(const char*, ...) __attribute__((format(printf, 1, 2)));
102 1d08c280 2021-03-06 op typedef void (*interactivefn)(int);
104 1d08c280 2021-03-06 op static void cmd_unbound(int);
106 48e9d457 2021-03-06 op static WINDOW *tabline, *body, *modeline, *minibuf;
107 48e9d457 2021-03-06 op static int body_lines, body_cols;
109 48e9d457 2021-03-06 op static struct event clminibufev;
110 48e9d457 2021-03-06 op static int clminibufev_set;
111 a6d450c1 2021-03-06 op static struct timeval clminibufev_timer = { 5, 0 };
113 1d08c280 2021-03-06 op struct ui_state {
116 48e9d457 2021-03-06 op size_t line_off;
117 48e9d457 2021-03-06 op size_t line_max;
119 1d08c280 2021-03-06 op TAILQ_HEAD(, line) head;
122 48e9d457 2021-03-06 op struct binding {
124 48e9d457 2021-03-06 op interactivefn fn;
125 48e9d457 2021-03-06 op } bindings[] = {
126 48e9d457 2021-03-06 op { CTRL('p'), cmd_previous_line, },
127 48e9d457 2021-03-06 op { CTRL('n'), cmd_next_line, },
128 48e9d457 2021-03-06 op { CTRL('f'), cmd_forward_char, },
129 48e9d457 2021-03-06 op { CTRL('b'), cmd_backward_char, },
131 48e9d457 2021-03-06 op { CTRL('L'), cmd_redraw, },
133 48e9d457 2021-03-06 op { 'J', cmd_scroll_down, },
134 48e9d457 2021-03-06 op { 'K', cmd_scroll_up, },
136 48e9d457 2021-03-06 op { 'q', cmd_kill_telescope, },
138 48e9d457 2021-03-06 op { 0, NULL, },
142 1d08c280 2021-03-06 op push_line(struct tab *tab, const struct line *l, const char *buf, size_t len)
144 1d08c280 2021-03-06 op struct line *vl;
146 48e9d457 2021-03-06 op tab->s->line_max++;
148 1d08c280 2021-03-06 op if ((vl = calloc(1, sizeof(*vl))) == NULL)
151 1d08c280 2021-03-06 op if (len != 0 && (vl->line = calloc(1, len+1)) == NULL) {
156 1d08c280 2021-03-06 op vl->type = l->type;
157 1d08c280 2021-03-06 op if (len != 0)
158 1d08c280 2021-03-06 op memcpy(vl->line, buf, len);
159 1d08c280 2021-03-06 op vl->alt = l->alt;
161 1d08c280 2021-03-06 op if (TAILQ_EMPTY(&tab->s->head))
162 1d08c280 2021-03-06 op TAILQ_INSERT_HEAD(&tab->s->head, vl, lines);
164 1d08c280 2021-03-06 op TAILQ_INSERT_TAIL(&tab->s->head, vl, lines);
169 1d08c280 2021-03-06 op empty_vlist(struct tab *tab)
171 1d08c280 2021-03-06 op struct line *l, *t;
173 48e9d457 2021-03-06 op tab->s->line_max = 0;
175 1d08c280 2021-03-06 op TAILQ_FOREACH_SAFE(l, &tab->s->head, lines, t) {
176 1d08c280 2021-03-06 op TAILQ_REMOVE(&tab->s->head, l, lines);
177 1d08c280 2021-03-06 op free(l->line);
178 1d08c280 2021-03-06 op /* l->alt references the original line! */
184 48e9d457 2021-03-06 op restore_cursor(struct tab *tab)
186 48e9d457 2021-03-06 op wmove(body, tab->s->curs_y, tab->s->curs_x);
190 1d08c280 2021-03-06 op cmd_previous_line(int k)
192 1d08c280 2021-03-06 op struct tab *tab;
194 1d08c280 2021-03-06 op tab = current_tab();
196 4dd664ce 2021-03-06 op if (--tab->s->curs_y < 0) {
197 4dd664ce 2021-03-06 op tab->s->curs_y = 0;
198 4dd664ce 2021-03-06 op cmd_scroll_up(k);
201 48e9d457 2021-03-06 op restore_cursor(tab);
205 1d08c280 2021-03-06 op cmd_next_line(int k)
207 1d08c280 2021-03-06 op struct tab *tab;
209 1d08c280 2021-03-06 op tab = current_tab();
211 4dd664ce 2021-03-06 op if (++tab->s->curs_y > body_lines-1) {
212 4dd664ce 2021-03-06 op tab->s->curs_y = body_lines-1;
213 4dd664ce 2021-03-06 op cmd_scroll_down(k);
216 48e9d457 2021-03-06 op restore_cursor(tab);
220 1d08c280 2021-03-06 op cmd_forward_char(int k)
222 b2cd5e06 2021-03-06 op struct tab *tab;
224 b2cd5e06 2021-03-06 op tab = current_tab();
225 4dd664ce 2021-03-06 op tab->s->curs_x = MIN(body_cols-1, tab->s->curs_x+1);
226 48e9d457 2021-03-06 op restore_cursor(tab);
230 1d08c280 2021-03-06 op cmd_backward_char(int k)
232 b2cd5e06 2021-03-06 op struct tab *tab;
234 b2cd5e06 2021-03-06 op tab = current_tab();
235 b2cd5e06 2021-03-06 op tab->s->curs_x = MAX(0, tab->s->curs_x-1);
236 48e9d457 2021-03-06 op restore_cursor(tab);
240 1d08c280 2021-03-06 op cmd_redraw(int k)
242 b1738d2e 2021-03-06 op handle_resize(0, 0, NULL);
246 48e9d457 2021-03-06 op cmd_scroll_up(int k)
248 48e9d457 2021-03-06 op struct tab *tab;
249 48e9d457 2021-03-06 op struct line *l;
251 48e9d457 2021-03-06 op tab = current_tab();
252 48e9d457 2021-03-06 op if (tab->s->line_off == 0)
255 48e9d457 2021-03-06 op l = nth_line(tab, --tab->s->line_off);
256 48e9d457 2021-03-06 op wscrl(body, -1);
257 48e9d457 2021-03-06 op wmove(body, 0, 0);
258 48e9d457 2021-03-06 op print_line(l);
262 48e9d457 2021-03-06 op cmd_scroll_down(int k)
264 48e9d457 2021-03-06 op struct tab *tab;
265 48e9d457 2021-03-06 op struct line *l;
268 48e9d457 2021-03-06 op tab = current_tab();
270 48e9d457 2021-03-06 op if (tab->s->line_max == 0 || tab->s->line_off == tab->s->line_max-1)
273 48e9d457 2021-03-06 op tab->s->line_off++;
274 48e9d457 2021-03-06 op wscrl(body, 1);
276 48e9d457 2021-03-06 op if (tab->s->line_max - tab->s->line_off < body_lines)
279 48e9d457 2021-03-06 op l = nth_line(tab, tab->s->line_off + body_lines-1);
280 48e9d457 2021-03-06 op wmove(body, body_lines-1, 0);
281 48e9d457 2021-03-06 op print_line(l);
285 1d08c280 2021-03-06 op cmd_kill_telescope(int k)
287 1d08c280 2021-03-06 op event_loopbreak();
291 1d08c280 2021-03-06 op cmd_unbound(int k)
293 7953dd72 2021-03-07 op message("%c is undefined", k);
296 48e9d457 2021-03-06 op static struct line *
297 48e9d457 2021-03-06 op nth_line(struct tab *tab, size_t n)
299 48e9d457 2021-03-06 op struct line *l;
303 48e9d457 2021-03-06 op TAILQ_FOREACH(l, &tab->s->head, lines) {
309 48e9d457 2021-03-06 op /* unreachable */
313 5e11c00c 2021-03-02 op static struct tab *
314 5e11c00c 2021-03-02 op current_tab(void)
316 5e11c00c 2021-03-02 op struct tab *t;
318 5e11c00c 2021-03-02 op TAILQ_FOREACH(t, &tabshead, tabs) {
319 5e11c00c 2021-03-02 op if (t->flags & TAB_CURRENT)
323 5e11c00c 2021-03-02 op /* unreachable */
328 5e11c00c 2021-03-02 op dispatch_stdio(int fd, short ev, void *d)
330 1d08c280 2021-03-06 op struct binding *b;
333 48e9d457 2021-03-06 op k = wgetch(body);
335 1d08c280 2021-03-06 op if (k == ERR)
338 1d08c280 2021-03-06 op for (b = bindings; b->fn != NULL; ++b) {
339 1d08c280 2021-03-06 op if (k == b->key) {
345 1d08c280 2021-03-06 op cmd_unbound(k);
348 48e9d457 2021-03-06 op restore_cursor(current_tab());
349 48e9d457 2021-03-06 op wrefresh(tabline);
350 48e9d457 2021-03-06 op wrefresh(modeline);
351 48e9d457 2021-03-06 op wrefresh(minibuf);
353 a6d450c1 2021-03-06 op wrefresh(body);
357 a6d450c1 2021-03-06 op handle_clear_minibuf(int fd, short ev, void *d)
359 a6d450c1 2021-03-06 op clminibufev_set = 0;
360 a6d450c1 2021-03-06 op werase(minibuf);
361 a6d450c1 2021-03-06 op wrefresh(minibuf);
362 48e9d457 2021-03-06 op wrefresh(body);
366 5e11c00c 2021-03-02 op handle_resize(int sig, short ev, void *d)
368 1d08c280 2021-03-06 op struct tab *tab;
374 48e9d457 2021-03-06 op /* move and resize the windows, in reverse order! */
376 b1738d2e 2021-03-06 op mvwin(minibuf, LINES-1, 0);
377 48e9d457 2021-03-06 op wresize(minibuf, 1, COLS);
379 48e9d457 2021-03-06 op mvwin(modeline, LINES-2, 0);
380 48e9d457 2021-03-06 op wresize(modeline, 1, COLS);
382 48e9d457 2021-03-06 op wresize(body, LINES-3, COLS);
383 48e9d457 2021-03-06 op body_lines = LINES-3;
384 bd9637e9 2021-03-06 op body_cols = COLS;
386 48e9d457 2021-03-06 op wresize(tabline, 1, COLS);
388 1d08c280 2021-03-06 op tab = current_tab();
390 1d08c280 2021-03-06 op wrap_page(tab);
391 1d08c280 2021-03-06 op redraw_tab(tab);
395 eb259e66 2021-03-02 op * Helper function for wrap_text. Find the end of the current word
396 eb259e66 2021-03-02 op * and the end of the separator after the word.
399 eb259e66 2021-03-02 op word_boundaries(const char *s, const char *sep, const char **endword, const char **endspc)
401 eb259e66 2021-03-02 op *endword = s;
402 eb259e66 2021-03-02 op *endword = s;
404 eb259e66 2021-03-02 op if (*s == '\0')
407 eb259e66 2021-03-02 op /* find the end of the current world */
408 eb259e66 2021-03-02 op for (; *s != '\0'; ++s) {
409 eb259e66 2021-03-02 op if (strchr(sep, *s) != NULL)
413 eb259e66 2021-03-02 op *endword = s;
415 eb259e66 2021-03-02 op /* find the end of the separator */
416 eb259e66 2021-03-02 op for (; *s != '\0'; ++s) {
417 eb259e66 2021-03-02 op if (strchr(sep, *s) == NULL)
426 1d08c280 2021-03-06 op static inline int
427 1d08c280 2021-03-06 op emitline(struct tab *tab, size_t zero, size_t *off, const struct line *l,
428 1d08c280 2021-03-06 op const char **line)
430 1d08c280 2021-03-06 op if (!push_line(tab, l, *line, *off - zero))
432 1d08c280 2021-03-06 op *line += *off - zero;
437 eb259e66 2021-03-02 op static inline void
438 eb259e66 2021-03-02 op emitstr(const char **s, size_t len, size_t *off)
442 eb259e66 2021-03-02 op /* printw("%*s", ...) doesn't seem to respect the precision, so... */
443 eb259e66 2021-03-02 op for (i = 0; i < len; ++i)
444 eb259e66 2021-03-02 op addch((*s)[i]);
450 1d08c280 2021-03-06 op * Build a list of visual line by wrapping the given line, assuming
451 1d08c280 2021-03-06 op * that when printed will have a leading prefix prfx.
453 eb259e66 2021-03-02 op * TODO: it considers each byte one cell on the screen!
456 1d08c280 2021-03-06 op wrap_text(struct tab *tab, const char *prfx, struct line *l)
458 eb259e66 2021-03-02 op size_t zero, off, len, split;
459 1d08c280 2021-03-06 op const char *endword, *endspc, *line, *linestart;
461 1d08c280 2021-03-06 op zero = strlen(prfx);
463 1d08c280 2021-03-06 op line = l->line;
464 1d08c280 2021-03-06 op linestart = l->line;
466 1d08c280 2021-03-06 op while (word_boundaries(line, " \t-", &endword, &endspc)) {
467 eb259e66 2021-03-02 op len = endword - line;
468 48e9d457 2021-03-06 op if (off + len >= body_cols) {
469 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
470 48e9d457 2021-03-06 op while (len >= body_cols) {
471 eb259e66 2021-03-02 op /* hard wrap */
472 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
473 48e9d457 2021-03-06 op len -= body_cols-1;
474 48e9d457 2021-03-06 op line += body_cols-1;
477 eb259e66 2021-03-02 op if (len != 0)
482 eb259e66 2021-03-02 op /* print the spaces iff not at bol */
483 eb259e66 2021-03-02 op len = endspc - endword;
484 eb259e66 2021-03-02 op /* line = endspc; */
485 eb259e66 2021-03-02 op if (off != zero) {
486 48e9d457 2021-03-06 op if (off + len >= body_cols) {
487 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
488 1d08c280 2021-03-06 op linestart = endspc;
493 eb259e66 2021-03-02 op line = endspc;
496 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
500 1d08c280 2021-03-06 op hardwrap_text(struct tab *tab, struct line *l)
502 1d08c280 2021-03-06 op size_t off, len;
503 1d08c280 2021-03-06 op const char *linestart;
505 1d08c280 2021-03-06 op len = strlen(l->line);
507 1d08c280 2021-03-06 op linestart = l->line;
509 1d08c280 2021-03-06 op while (len >= COLS) {
510 1d08c280 2021-03-06 op len -= COLS-1;
511 1d08c280 2021-03-06 op off = COLS-1;
512 1d08c280 2021-03-06 op if (!emitline(tab, 0, &off, l, &linestart))
520 1d08c280 2021-03-06 op wrap_page(struct tab *tab)
522 1d08c280 2021-03-06 op struct line *l;
524 1d08c280 2021-03-06 op empty_vlist(tab);
526 5e11c00c 2021-03-02 op TAILQ_FOREACH(l, &tab->page.head, lines) {
527 5e11c00c 2021-03-02 op switch (l->type) {
528 5e11c00c 2021-03-02 op case LINE_TEXT:
529 1d08c280 2021-03-06 op wrap_text(tab, "", l);
531 5e11c00c 2021-03-02 op case LINE_LINK:
532 1d08c280 2021-03-06 op wrap_text(tab, "=> ", l);
534 5e11c00c 2021-03-02 op case LINE_TITLE_1:
535 1d08c280 2021-03-06 op wrap_text(tab, "# ", l);
537 5e11c00c 2021-03-02 op case LINE_TITLE_2:
538 1d08c280 2021-03-06 op wrap_text(tab, "## ", l);
540 5e11c00c 2021-03-02 op case LINE_TITLE_3:
541 1d08c280 2021-03-06 op wrap_text(tab, "### ", l);
543 5e11c00c 2021-03-02 op case LINE_ITEM:
544 1d08c280 2021-03-06 op wrap_text(tab, "* ", l);
546 5e11c00c 2021-03-02 op case LINE_QUOTE:
547 1d08c280 2021-03-06 op wrap_text(tab, "> ", l);
549 5e11c00c 2021-03-02 op case LINE_PRE_START:
550 5e11c00c 2021-03-02 op case LINE_PRE_END:
551 1d08c280 2021-03-06 op push_line(tab, l, NULL, 0);
553 5e11c00c 2021-03-02 op case LINE_PRE_CONTENT:
554 1d08c280 2021-03-06 op hardwrap_text(tab, l);
561 1d08c280 2021-03-06 op static inline void
562 1d08c280 2021-03-06 op print_line(struct line *l)
564 bd9637e9 2021-03-06 op const char *text = l->line;
566 bd9637e9 2021-03-06 op if (text == NULL)
569 1d08c280 2021-03-06 op switch (l->type) {
570 1d08c280 2021-03-06 op case LINE_TEXT:
571 bd9637e9 2021-03-06 op wprintw(body, "%s", text);
573 1d08c280 2021-03-06 op case LINE_LINK:
574 bd9637e9 2021-03-06 op wattron(body, A_UNDERLINE);
575 bd9637e9 2021-03-06 op wprintw(body, "=> %s", text);
576 bd9637e9 2021-03-06 op wattroff(body, A_UNDERLINE);
578 1d08c280 2021-03-06 op case LINE_TITLE_1:
579 bd9637e9 2021-03-06 op wattron(body, A_BOLD);
580 bd9637e9 2021-03-06 op wprintw(body, "# %s", text);
581 bd9637e9 2021-03-06 op wattroff(body, A_BOLD);
583 1d08c280 2021-03-06 op case LINE_TITLE_2:
584 bd9637e9 2021-03-06 op wattron(body, A_BOLD);
585 bd9637e9 2021-03-06 op wprintw(body, "## %s", text);
586 bd9637e9 2021-03-06 op wattroff(body, A_BOLD);
588 bd9637e9 2021-03-06 op case LINE_TITLE_3:
589 bd9637e9 2021-03-06 op wattron(body, A_BOLD);
590 bd9637e9 2021-03-06 op wprintw(body, "### %s", text);
591 bd9637e9 2021-03-06 op wattroff(body, A_BOLD);
593 bd9637e9 2021-03-06 op case LINE_ITEM:
594 bd9637e9 2021-03-06 op wprintw(body, "* %s", text);
596 1d08c280 2021-03-06 op case LINE_QUOTE:
597 bd9637e9 2021-03-06 op wattron(body, A_DIM);
598 bd9637e9 2021-03-06 op wprintw(body, "> %s", text);
599 bd9637e9 2021-03-06 op wattroff(body, A_DIM);
601 1d08c280 2021-03-06 op case LINE_PRE_START:
602 1d08c280 2021-03-06 op case LINE_PRE_END:
603 48e9d457 2021-03-06 op wprintw(body, "```");
605 1d08c280 2021-03-06 op case LINE_PRE_CONTENT:
606 bd9637e9 2021-03-06 op wprintw(body, "%s", text);
612 48e9d457 2021-03-06 op redraw_modeline(struct tab *tab)
614 48e9d457 2021-03-06 op int x, y, max_x, max_y;
615 48e9d457 2021-03-06 op const char *url = "TODO:url";
616 48e9d457 2021-03-06 op const char *mode = "text/gemini-mode";
618 48e9d457 2021-03-06 op wclear(modeline);
619 48e9d457 2021-03-06 op wattron(modeline, A_REVERSE);
620 48e9d457 2021-03-06 op wmove(modeline, 0, 0);
622 48e9d457 2021-03-06 op wprintw(modeline, "-- %s %s ", mode, url);
623 48e9d457 2021-03-06 op getyx(modeline, y, x);
624 48e9d457 2021-03-06 op getmaxyx(modeline, max_y, max_x);
629 48e9d457 2021-03-06 op for (; x < max_x; ++x)
630 48e9d457 2021-03-06 op waddstr(modeline, "-");
634 48e9d457 2021-03-06 op redraw_tab(struct tab *tab)
636 48e9d457 2021-03-06 op struct line *l;
639 48e9d457 2021-03-06 op werase(body);
641 48e9d457 2021-03-06 op tab->s->line_off = MIN(tab->s->line_max, tab->s->line_off);
642 48e9d457 2021-03-06 op if (TAILQ_EMPTY(&tab->s->head))
646 48e9d457 2021-03-06 op l = nth_line(tab, tab->s->line_off);
647 48e9d457 2021-03-06 op for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
648 48e9d457 2021-03-06 op wmove(body, line, 0);
649 1d08c280 2021-03-06 op print_line(l);
651 48e9d457 2021-03-06 op if (line == body_lines)
655 48e9d457 2021-03-06 op redraw_modeline(tab);
657 48e9d457 2021-03-06 op restore_cursor(tab);
658 48e9d457 2021-03-06 op wrefresh(tabline);
659 48e9d457 2021-03-06 op wrefresh(modeline);
660 48e9d457 2021-03-06 op wrefresh(minibuf);
662 7953dd72 2021-03-07 op wrefresh(body);
666 7953dd72 2021-03-07 op message(const char *fmt, ...)
670 7953dd72 2021-03-07 op va_start(ap, fmt);
672 7953dd72 2021-03-07 op if (clminibufev_set)
673 7953dd72 2021-03-07 op evtimer_del(&clminibufev);
674 7953dd72 2021-03-07 op evtimer_set(&clminibufev, handle_clear_minibuf, NULL);
675 7953dd72 2021-03-07 op evtimer_add(&clminibufev, &clminibufev_timer);
676 7953dd72 2021-03-07 op clminibufev_set = 1;
678 7953dd72 2021-03-07 op werase(minibuf);
679 7953dd72 2021-03-07 op vw_printw(minibuf, fmt, ap);
681 7953dd72 2021-03-07 op wrefresh(minibuf);
682 48e9d457 2021-03-06 op wrefresh(body);
688 5e11c00c 2021-03-02 op ui_init(void)
690 5e11c00c 2021-03-02 op setlocale(LC_ALL, "");
697 5e11c00c 2021-03-02 op intrflush(stdscr, FALSE);
698 5e11c00c 2021-03-02 op keypad(stdscr, TRUE);
700 48e9d457 2021-03-06 op if ((tabline = newwin(1, COLS, 0, 0)) == NULL)
702 48e9d457 2021-03-06 op if ((body = newwin(LINES - 3, COLS, 1, 0)) == NULL)
704 48e9d457 2021-03-06 op if ((modeline = newwin(1, COLS, LINES-2, 0)) == NULL)
706 48e9d457 2021-03-06 op if ((minibuf = newwin(1, COLS, LINES-1, 0)) == NULL)
709 48e9d457 2021-03-06 op body_lines = LINES-3;
710 48e9d457 2021-03-06 op body_cols = COLS;
712 48e9d457 2021-03-06 op scrollok(body, TRUE);
714 5e11c00c 2021-03-02 op /* non-blocking input */
715 48e9d457 2021-03-06 op wtimeout(body, 0);
717 48e9d457 2021-03-06 op mvwprintw(body, 0, 0, "");
719 5e11c00c 2021-03-02 op event_set(&stdioev, 0, EV_READ | EV_PERSIST, dispatch_stdio, NULL);
720 5e11c00c 2021-03-02 op event_add(&stdioev, NULL);
722 5e11c00c 2021-03-02 op signal_set(&winchev, SIGWINCH, handle_resize, NULL);
723 5e11c00c 2021-03-02 op signal_add(&winchev, NULL);
729 5e11c00c 2021-03-02 op ui_on_new_tab(struct tab *tab)
731 5e11c00c 2021-03-02 op struct tab *t;
733 1d08c280 2021-03-06 op if ((tab->s = calloc(1, sizeof(*t->s))) == NULL)
736 1d08c280 2021-03-06 op TAILQ_INIT(&tab->s->head);
738 5e11c00c 2021-03-02 op TAILQ_FOREACH(t, &tabshead, tabs) {
739 5e11c00c 2021-03-02 op t->flags &= ~TAB_CURRENT;
741 5e11c00c 2021-03-02 op tab->flags = TAB_CURRENT;
743 5e11c00c 2021-03-02 op /* TODO: redraw the tab list */
744 1d08c280 2021-03-06 op /* TODO: switch to the new tab */
746 48e9d457 2021-03-06 op wmove(body, 0, 0);
752 5e11c00c 2021-03-02 op ui_on_tab_refresh(struct tab *tab)
754 5e11c00c 2021-03-02 op if (!(tab->flags & TAB_CURRENT))
757 1d08c280 2021-03-06 op wrap_page(tab);
758 5e11c00c 2021-03-02 op redraw_tab(tab);
