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 1d08c280 2021-03-06 op #define MIN(a, b) ((a) < (b) ? (a) : (b))
72 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 2a4ad912 2021-03-08 op static void cmd_push_button(int);
90 19f1448e 2021-03-08 op static void cmd_unbound(struct key);
91 48e9d457 2021-03-06 op static struct line *nth_line(struct tab*, size_t);
92 5e11c00c 2021-03-02 op static struct tab *current_tab(void);
93 5e11c00c 2021-03-02 op static void dispatch_stdio(int, short, void*);
94 a6d450c1 2021-03-06 op static void handle_clear_minibuf(int, short, void*);
95 5e11c00c 2021-03-02 op static void handle_resize(int, short, void*);
96 eb259e66 2021-03-02 op static int word_bourdaries(const char*, const char*, const char**, const char**);
97 1d08c280 2021-03-06 op static void wrap_text(struct tab*, const char*, struct line*);
98 1d08c280 2021-03-06 op static int hardwrap_text(struct tab*, struct line*);
99 1d08c280 2021-03-06 op static int wrap_page(struct tab*);
100 48e9d457 2021-03-06 op static void print_line(struct line*);
101 5e11c00c 2021-03-02 op static void redraw_tab(struct tab*);
102 7953dd72 2021-03-07 op static void message(const char*, ...) __attribute__((format(printf, 1, 2)));
103 bcb0b073 2021-03-07 op static void new_tab(void);
105 1d08c280 2021-03-06 op typedef void (*interactivefn)(int);
107 48e9d457 2021-03-06 op static WINDOW *tabline, *body, *modeline, *minibuf;
108 48e9d457 2021-03-06 op static int body_lines, body_cols;
110 48e9d457 2021-03-06 op static struct event clminibufev;
111 48e9d457 2021-03-06 op static int clminibufev_set;
112 a6d450c1 2021-03-06 op static struct timeval clminibufev_timer = { 5, 0 };
114 bcb0b073 2021-03-07 op static uint32_t tab_counter;
116 1d08c280 2021-03-06 op struct ui_state {
119 48e9d457 2021-03-06 op size_t line_off;
120 48e9d457 2021-03-06 op size_t line_max;
122 1d08c280 2021-03-06 op TAILQ_HEAD(, line) head;
126 19f1448e 2021-03-08 op #define CTRLFLG 0x1
127 19f1448e 2021-03-08 op #define METAFLG 0x2
132 19f1448e 2021-03-08 op #define KEY(n) ((struct key){0, n})
133 19f1448e 2021-03-08 op #define CKEY(n) ((struct key){0, (n) & 0x1F})
134 19f1448e 2021-03-08 op #define MKEY(n) ((struct key){METAFLG, n})
135 19f1448e 2021-03-08 op #define CMKEY(n) ((struct key){METAFLG, (n) & 0x1F})
137 48e9d457 2021-03-06 op struct binding {
138 19f1448e 2021-03-08 op struct key key;
139 48e9d457 2021-03-06 op interactivefn fn;
140 48e9d457 2021-03-06 op } bindings[] = {
141 19f1448e 2021-03-08 op { CKEY('p'), cmd_previous_line, },
142 19f1448e 2021-03-08 op { CKEY('n'), cmd_next_line, },
143 19f1448e 2021-03-08 op { CKEY('f'), cmd_forward_char, },
144 19f1448e 2021-03-08 op { CKEY('b'), cmd_backward_char, },
146 19f1448e 2021-03-08 op { CKEY('L'), cmd_redraw, },
148 19f1448e 2021-03-08 op { KEY('J'), cmd_scroll_down, },
149 19f1448e 2021-03-08 op { KEY('K'), cmd_scroll_up, },
151 19f1448e 2021-03-08 op { KEY('q'), cmd_kill_telescope, },
152 19f1448e 2021-03-08 op { CKEY('m'), cmd_push_button, },
154 19f1448e 2021-03-08 op { {0, 0}, NULL, },
158 1d08c280 2021-03-06 op push_line(struct tab *tab, const struct line *l, const char *buf, size_t len)
160 1d08c280 2021-03-06 op struct line *vl;
162 48e9d457 2021-03-06 op tab->s->line_max++;
164 1d08c280 2021-03-06 op if ((vl = calloc(1, sizeof(*vl))) == NULL)
167 1d08c280 2021-03-06 op if (len != 0 && (vl->line = calloc(1, len+1)) == NULL) {
172 1d08c280 2021-03-06 op vl->type = l->type;
173 1d08c280 2021-03-06 op if (len != 0)
174 1d08c280 2021-03-06 op memcpy(vl->line, buf, len);
175 1d08c280 2021-03-06 op vl->alt = l->alt;
177 1d08c280 2021-03-06 op if (TAILQ_EMPTY(&tab->s->head))
178 1d08c280 2021-03-06 op TAILQ_INSERT_HEAD(&tab->s->head, vl, lines);
180 1d08c280 2021-03-06 op TAILQ_INSERT_TAIL(&tab->s->head, vl, lines);
185 1d08c280 2021-03-06 op empty_vlist(struct tab *tab)
187 1d08c280 2021-03-06 op struct line *l, *t;
189 48e9d457 2021-03-06 op tab->s->line_max = 0;
191 1d08c280 2021-03-06 op TAILQ_FOREACH_SAFE(l, &tab->s->head, lines, t) {
192 1d08c280 2021-03-06 op TAILQ_REMOVE(&tab->s->head, l, lines);
193 1d08c280 2021-03-06 op free(l->line);
194 1d08c280 2021-03-06 op /* l->alt references the original line! */
200 48e9d457 2021-03-06 op restore_cursor(struct tab *tab)
202 48e9d457 2021-03-06 op wmove(body, tab->s->curs_y, tab->s->curs_x);
206 1d08c280 2021-03-06 op cmd_previous_line(int k)
208 1d08c280 2021-03-06 op struct tab *tab;
210 1d08c280 2021-03-06 op tab = current_tab();
212 4dd664ce 2021-03-06 op if (--tab->s->curs_y < 0) {
213 4dd664ce 2021-03-06 op tab->s->curs_y = 0;
214 4dd664ce 2021-03-06 op cmd_scroll_up(k);
217 48e9d457 2021-03-06 op restore_cursor(tab);
221 1d08c280 2021-03-06 op cmd_next_line(int k)
223 1d08c280 2021-03-06 op struct tab *tab;
225 1d08c280 2021-03-06 op tab = current_tab();
227 4dd664ce 2021-03-06 op if (++tab->s->curs_y > body_lines-1) {
228 4dd664ce 2021-03-06 op tab->s->curs_y = body_lines-1;
229 4dd664ce 2021-03-06 op cmd_scroll_down(k);
232 48e9d457 2021-03-06 op restore_cursor(tab);
236 1d08c280 2021-03-06 op cmd_forward_char(int k)
238 b2cd5e06 2021-03-06 op struct tab *tab;
240 b2cd5e06 2021-03-06 op tab = current_tab();
241 4dd664ce 2021-03-06 op tab->s->curs_x = MIN(body_cols-1, tab->s->curs_x+1);
242 48e9d457 2021-03-06 op restore_cursor(tab);
246 1d08c280 2021-03-06 op cmd_backward_char(int k)
248 b2cd5e06 2021-03-06 op struct tab *tab;
250 b2cd5e06 2021-03-06 op tab = current_tab();
251 b2cd5e06 2021-03-06 op tab->s->curs_x = MAX(0, tab->s->curs_x-1);
252 48e9d457 2021-03-06 op restore_cursor(tab);
256 1d08c280 2021-03-06 op cmd_redraw(int k)
258 b1738d2e 2021-03-06 op handle_resize(0, 0, NULL);
262 48e9d457 2021-03-06 op cmd_scroll_up(int k)
264 48e9d457 2021-03-06 op struct tab *tab;
265 48e9d457 2021-03-06 op struct line *l;
267 48e9d457 2021-03-06 op tab = current_tab();
268 48e9d457 2021-03-06 op if (tab->s->line_off == 0)
271 48e9d457 2021-03-06 op l = nth_line(tab, --tab->s->line_off);
272 48e9d457 2021-03-06 op wscrl(body, -1);
273 48e9d457 2021-03-06 op wmove(body, 0, 0);
274 48e9d457 2021-03-06 op print_line(l);
278 48e9d457 2021-03-06 op cmd_scroll_down(int k)
280 48e9d457 2021-03-06 op struct tab *tab;
281 48e9d457 2021-03-06 op struct line *l;
284 48e9d457 2021-03-06 op tab = current_tab();
286 48e9d457 2021-03-06 op if (tab->s->line_max == 0 || tab->s->line_off == tab->s->line_max-1)
289 48e9d457 2021-03-06 op tab->s->line_off++;
290 48e9d457 2021-03-06 op wscrl(body, 1);
292 48e9d457 2021-03-06 op if (tab->s->line_max - tab->s->line_off < body_lines)
295 48e9d457 2021-03-06 op l = nth_line(tab, tab->s->line_off + body_lines-1);
296 48e9d457 2021-03-06 op wmove(body, body_lines-1, 0);
297 48e9d457 2021-03-06 op print_line(l);
301 1d08c280 2021-03-06 op cmd_kill_telescope(int k)
303 1d08c280 2021-03-06 op event_loopbreak();
307 2a4ad912 2021-03-08 op cmd_push_button(int k)
309 2a4ad912 2021-03-08 op struct tab *tab;
310 2a4ad912 2021-03-08 op struct line *l;
313 2a4ad912 2021-03-08 op tab = current_tab();
315 2a4ad912 2021-03-08 op nth = tab->s->line_off + tab->s->curs_y;
316 2a4ad912 2021-03-08 op if (nth > tab->s->line_max)
318 2a4ad912 2021-03-08 op l = nth_line(tab, nth);
319 2a4ad912 2021-03-08 op message("Enter on line: \"%s\"", l->line ? l->line : "");
323 19f1448e 2021-03-08 op cmd_unbound(struct key k)
325 19f1448e 2021-03-08 op message("%s%c is undefined",
326 19f1448e 2021-03-08 op (k.flags & METAFLG) ? "M-" : "",
330 48e9d457 2021-03-06 op static struct line *
331 48e9d457 2021-03-06 op nth_line(struct tab *tab, size_t n)
333 48e9d457 2021-03-06 op struct line *l;
337 48e9d457 2021-03-06 op TAILQ_FOREACH(l, &tab->s->head, lines) {
343 48e9d457 2021-03-06 op /* unreachable */
347 5e11c00c 2021-03-02 op static struct tab *
348 5e11c00c 2021-03-02 op current_tab(void)
350 5e11c00c 2021-03-02 op struct tab *t;
352 5e11c00c 2021-03-02 op TAILQ_FOREACH(t, &tabshead, tabs) {
353 5e11c00c 2021-03-02 op if (t->flags & TAB_CURRENT)
357 5e11c00c 2021-03-02 op /* unreachable */
362 5e11c00c 2021-03-02 op dispatch_stdio(int fd, short ev, void *d)
364 1d08c280 2021-03-06 op struct binding *b;
365 19f1448e 2021-03-08 op struct key key;
368 19f1448e 2021-03-08 op key.flags = 0;
370 48e9d457 2021-03-06 op k = wgetch(body);
372 1d08c280 2021-03-06 op if (k == ERR)
375 19f1448e 2021-03-08 op /* look for a M-key */
376 19f1448e 2021-03-08 op if (k == 27) {
377 19f1448e 2021-03-08 op wtimeout(body, 0); /* TODO: make escape-time customizable */
378 19f1448e 2021-03-08 op j = wgetch(body);
379 19f1448e 2021-03-08 op if (j != ERR) {
381 19f1448e 2021-03-08 op key.flags = METAFLG;
387 1d08c280 2021-03-06 op for (b = bindings; b->fn != NULL; ++b) {
388 19f1448e 2021-03-08 op if (key.flags == b->key.flags &&
389 19f1448e 2021-03-08 op key.key == b->key.key) {
395 19f1448e 2021-03-08 op cmd_unbound(key);
398 48e9d457 2021-03-06 op restore_cursor(current_tab());
399 48e9d457 2021-03-06 op wrefresh(tabline);
400 48e9d457 2021-03-06 op wrefresh(modeline);
401 48e9d457 2021-03-06 op wrefresh(minibuf);
403 a6d450c1 2021-03-06 op wrefresh(body);
407 a6d450c1 2021-03-06 op handle_clear_minibuf(int fd, short ev, void *d)
409 a6d450c1 2021-03-06 op clminibufev_set = 0;
410 a6d450c1 2021-03-06 op werase(minibuf);
411 a6d450c1 2021-03-06 op wrefresh(minibuf);
412 48e9d457 2021-03-06 op wrefresh(body);
416 5e11c00c 2021-03-02 op handle_resize(int sig, short ev, void *d)
418 1d08c280 2021-03-06 op struct tab *tab;
424 48e9d457 2021-03-06 op /* move and resize the windows, in reverse order! */
426 b1738d2e 2021-03-06 op mvwin(minibuf, LINES-1, 0);
427 48e9d457 2021-03-06 op wresize(minibuf, 1, COLS);
429 48e9d457 2021-03-06 op mvwin(modeline, LINES-2, 0);
430 48e9d457 2021-03-06 op wresize(modeline, 1, COLS);
432 48e9d457 2021-03-06 op wresize(body, LINES-3, COLS);
433 48e9d457 2021-03-06 op body_lines = LINES-3;
434 bd9637e9 2021-03-06 op body_cols = COLS;
436 48e9d457 2021-03-06 op wresize(tabline, 1, COLS);
438 1d08c280 2021-03-06 op tab = current_tab();
440 1d08c280 2021-03-06 op wrap_page(tab);
441 1d08c280 2021-03-06 op redraw_tab(tab);
445 eb259e66 2021-03-02 op * Helper function for wrap_text. Find the end of the current word
446 eb259e66 2021-03-02 op * and the end of the separator after the word.
449 eb259e66 2021-03-02 op word_boundaries(const char *s, const char *sep, const char **endword, const char **endspc)
451 eb259e66 2021-03-02 op *endword = s;
452 eb259e66 2021-03-02 op *endword = s;
454 eb259e66 2021-03-02 op if (*s == '\0')
457 eb259e66 2021-03-02 op /* find the end of the current world */
458 eb259e66 2021-03-02 op for (; *s != '\0'; ++s) {
459 eb259e66 2021-03-02 op if (strchr(sep, *s) != NULL)
463 eb259e66 2021-03-02 op *endword = s;
465 eb259e66 2021-03-02 op /* find the end of the separator */
466 eb259e66 2021-03-02 op for (; *s != '\0'; ++s) {
467 eb259e66 2021-03-02 op if (strchr(sep, *s) == NULL)
476 1d08c280 2021-03-06 op static inline int
477 1d08c280 2021-03-06 op emitline(struct tab *tab, size_t zero, size_t *off, const struct line *l,
478 1d08c280 2021-03-06 op const char **line)
480 1d08c280 2021-03-06 op if (!push_line(tab, l, *line, *off - zero))
482 1d08c280 2021-03-06 op *line += *off - zero;
487 eb259e66 2021-03-02 op static inline void
488 eb259e66 2021-03-02 op emitstr(const char **s, size_t len, size_t *off)
492 eb259e66 2021-03-02 op /* printw("%*s", ...) doesn't seem to respect the precision, so... */
493 eb259e66 2021-03-02 op for (i = 0; i < len; ++i)
494 eb259e66 2021-03-02 op addch((*s)[i]);
500 1d08c280 2021-03-06 op * Build a list of visual line by wrapping the given line, assuming
501 1d08c280 2021-03-06 op * that when printed will have a leading prefix prfx.
503 eb259e66 2021-03-02 op * TODO: it considers each byte one cell on the screen!
506 1d08c280 2021-03-06 op wrap_text(struct tab *tab, const char *prfx, struct line *l)
508 eb259e66 2021-03-02 op size_t zero, off, len, split;
509 1d08c280 2021-03-06 op const char *endword, *endspc, *line, *linestart;
511 1d08c280 2021-03-06 op zero = strlen(prfx);
513 1d08c280 2021-03-06 op line = l->line;
514 1d08c280 2021-03-06 op linestart = l->line;
516 1d08c280 2021-03-06 op while (word_boundaries(line, " \t-", &endword, &endspc)) {
517 eb259e66 2021-03-02 op len = endword - line;
518 48e9d457 2021-03-06 op if (off + len >= body_cols) {
519 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
520 48e9d457 2021-03-06 op while (len >= body_cols) {
521 eb259e66 2021-03-02 op /* hard wrap */
522 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
523 48e9d457 2021-03-06 op len -= body_cols-1;
524 48e9d457 2021-03-06 op line += body_cols-1;
527 eb259e66 2021-03-02 op if (len != 0)
532 eb259e66 2021-03-02 op /* print the spaces iff not at bol */
533 eb259e66 2021-03-02 op len = endspc - endword;
534 eb259e66 2021-03-02 op /* line = endspc; */
535 eb259e66 2021-03-02 op if (off != zero) {
536 48e9d457 2021-03-06 op if (off + len >= body_cols) {
537 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
538 1d08c280 2021-03-06 op linestart = endspc;
543 eb259e66 2021-03-02 op line = endspc;
546 1d08c280 2021-03-06 op emitline(tab, zero, &off, l, &linestart);
550 1d08c280 2021-03-06 op hardwrap_text(struct tab *tab, struct line *l)
552 1d08c280 2021-03-06 op size_t off, len;
553 1d08c280 2021-03-06 op const char *linestart;
555 1d08c280 2021-03-06 op len = strlen(l->line);
557 1d08c280 2021-03-06 op linestart = l->line;
559 1d08c280 2021-03-06 op while (len >= COLS) {
560 1d08c280 2021-03-06 op len -= COLS-1;
561 1d08c280 2021-03-06 op off = COLS-1;
562 1d08c280 2021-03-06 op if (!emitline(tab, 0, &off, l, &linestart))
566 ede1f142 2021-03-07 op if (len != 0)
567 ede1f142 2021-03-07 op return emitline(tab, 0, &len, l, &linestart);
573 1d08c280 2021-03-06 op wrap_page(struct tab *tab)
575 1d08c280 2021-03-06 op struct line *l;
577 1d08c280 2021-03-06 op empty_vlist(tab);
579 5e11c00c 2021-03-02 op TAILQ_FOREACH(l, &tab->page.head, lines) {
580 5e11c00c 2021-03-02 op switch (l->type) {
581 5e11c00c 2021-03-02 op case LINE_TEXT:
582 1d08c280 2021-03-06 op wrap_text(tab, "", l);
584 5e11c00c 2021-03-02 op case LINE_LINK:
585 1d08c280 2021-03-06 op wrap_text(tab, "=> ", l);
587 5e11c00c 2021-03-02 op case LINE_TITLE_1:
588 1d08c280 2021-03-06 op wrap_text(tab, "# ", l);
590 5e11c00c 2021-03-02 op case LINE_TITLE_2:
591 1d08c280 2021-03-06 op wrap_text(tab, "## ", l);
593 5e11c00c 2021-03-02 op case LINE_TITLE_3:
594 1d08c280 2021-03-06 op wrap_text(tab, "### ", l);
596 5e11c00c 2021-03-02 op case LINE_ITEM:
597 1d08c280 2021-03-06 op wrap_text(tab, "* ", l);
599 5e11c00c 2021-03-02 op case LINE_QUOTE:
600 1d08c280 2021-03-06 op wrap_text(tab, "> ", l);
602 5e11c00c 2021-03-02 op case LINE_PRE_START:
603 5e11c00c 2021-03-02 op case LINE_PRE_END:
604 1d08c280 2021-03-06 op push_line(tab, l, NULL, 0);
606 5e11c00c 2021-03-02 op case LINE_PRE_CONTENT:
607 1d08c280 2021-03-06 op hardwrap_text(tab, l);
614 1d08c280 2021-03-06 op static inline void
615 1d08c280 2021-03-06 op print_line(struct line *l)
617 bd9637e9 2021-03-06 op const char *text = l->line;
619 bd9637e9 2021-03-06 op if (text == NULL)
622 1d08c280 2021-03-06 op switch (l->type) {
623 1d08c280 2021-03-06 op case LINE_TEXT:
624 bd9637e9 2021-03-06 op wprintw(body, "%s", text);
626 1d08c280 2021-03-06 op case LINE_LINK:
627 bd9637e9 2021-03-06 op wattron(body, A_UNDERLINE);
628 bd9637e9 2021-03-06 op wprintw(body, "=> %s", text);
629 bd9637e9 2021-03-06 op wattroff(body, A_UNDERLINE);
631 1d08c280 2021-03-06 op case LINE_TITLE_1:
632 bd9637e9 2021-03-06 op wattron(body, A_BOLD);
633 bd9637e9 2021-03-06 op wprintw(body, "# %s", text);
634 bd9637e9 2021-03-06 op wattroff(body, A_BOLD);
636 1d08c280 2021-03-06 op case LINE_TITLE_2:
637 bd9637e9 2021-03-06 op wattron(body, A_BOLD);
638 bd9637e9 2021-03-06 op wprintw(body, "## %s", text);
639 bd9637e9 2021-03-06 op wattroff(body, A_BOLD);
641 bd9637e9 2021-03-06 op case LINE_TITLE_3:
642 bd9637e9 2021-03-06 op wattron(body, A_BOLD);
643 bd9637e9 2021-03-06 op wprintw(body, "### %s", text);
644 bd9637e9 2021-03-06 op wattroff(body, A_BOLD);
646 bd9637e9 2021-03-06 op case LINE_ITEM:
647 bd9637e9 2021-03-06 op wprintw(body, "* %s", text);
649 1d08c280 2021-03-06 op case LINE_QUOTE:
650 bd9637e9 2021-03-06 op wattron(body, A_DIM);
651 bd9637e9 2021-03-06 op wprintw(body, "> %s", text);
652 bd9637e9 2021-03-06 op wattroff(body, A_DIM);
654 1d08c280 2021-03-06 op case LINE_PRE_START:
655 1d08c280 2021-03-06 op case LINE_PRE_END:
656 48e9d457 2021-03-06 op wprintw(body, "```");
658 1d08c280 2021-03-06 op case LINE_PRE_CONTENT:
659 bd9637e9 2021-03-06 op wprintw(body, "%s", text);
665 48e9d457 2021-03-06 op redraw_modeline(struct tab *tab)
667 48e9d457 2021-03-06 op int x, y, max_x, max_y;
668 48e9d457 2021-03-06 op const char *url = "TODO:url";
669 48e9d457 2021-03-06 op const char *mode = "text/gemini-mode";
671 48e9d457 2021-03-06 op wclear(modeline);
672 48e9d457 2021-03-06 op wattron(modeline, A_REVERSE);
673 48e9d457 2021-03-06 op wmove(modeline, 0, 0);
675 48e9d457 2021-03-06 op wprintw(modeline, "-- %s %s ", mode, url);
676 48e9d457 2021-03-06 op getyx(modeline, y, x);
677 48e9d457 2021-03-06 op getmaxyx(modeline, max_y, max_x);
682 48e9d457 2021-03-06 op for (; x < max_x; ++x)
683 48e9d457 2021-03-06 op waddstr(modeline, "-");
687 48e9d457 2021-03-06 op redraw_tab(struct tab *tab)
689 48e9d457 2021-03-06 op struct line *l;
692 48e9d457 2021-03-06 op werase(body);
694 48e9d457 2021-03-06 op tab->s->line_off = MIN(tab->s->line_max, tab->s->line_off);
695 48e9d457 2021-03-06 op if (TAILQ_EMPTY(&tab->s->head))
699 48e9d457 2021-03-06 op l = nth_line(tab, tab->s->line_off);
700 48e9d457 2021-03-06 op for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
701 48e9d457 2021-03-06 op wmove(body, line, 0);
702 1d08c280 2021-03-06 op print_line(l);
704 48e9d457 2021-03-06 op if (line == body_lines)
708 48e9d457 2021-03-06 op redraw_modeline(tab);
710 48e9d457 2021-03-06 op restore_cursor(tab);
711 48e9d457 2021-03-06 op wrefresh(tabline);
712 48e9d457 2021-03-06 op wrefresh(modeline);
713 48e9d457 2021-03-06 op wrefresh(minibuf);
715 7953dd72 2021-03-07 op wrefresh(body);
719 7953dd72 2021-03-07 op message(const char *fmt, ...)
723 7953dd72 2021-03-07 op va_start(ap, fmt);
725 7953dd72 2021-03-07 op if (clminibufev_set)
726 7953dd72 2021-03-07 op evtimer_del(&clminibufev);
727 7953dd72 2021-03-07 op evtimer_set(&clminibufev, handle_clear_minibuf, NULL);
728 7953dd72 2021-03-07 op evtimer_add(&clminibufev, &clminibufev_timer);
729 7953dd72 2021-03-07 op clminibufev_set = 1;
731 7953dd72 2021-03-07 op werase(minibuf);
732 7953dd72 2021-03-07 op vw_printw(minibuf, fmt, ap);
734 7953dd72 2021-03-07 op wrefresh(minibuf);
735 48e9d457 2021-03-06 op wrefresh(body);
741 bcb0b073 2021-03-07 op new_tab(void)
743 bcb0b073 2021-03-07 op struct tab *tab, *t;
744 bcb0b073 2021-03-07 op const char *url = "about:new";
746 bcb0b073 2021-03-07 op if ((tab = calloc(1, sizeof(*tab))) == NULL)
749 bcb0b073 2021-03-07 op if ((tab->s = calloc(1, sizeof(*t->s))) == NULL)
752 bcb0b073 2021-03-07 op TAILQ_INIT(&tab->s->head);
753 bcb0b073 2021-03-07 op TAILQ_FOREACH(t, &tabshead, tabs) {
754 bcb0b073 2021-03-07 op t->flags &= ~TAB_CURRENT;
757 bcb0b073 2021-03-07 op tab->id = tab_counter++;
758 bcb0b073 2021-03-07 op tab->flags = TAB_CURRENT;
760 bcb0b073 2021-03-07 op if (TAILQ_EMPTY(&tabshead))
761 bcb0b073 2021-03-07 op TAILQ_INSERT_HEAD(&tabshead, tab, tabs);
763 bcb0b073 2021-03-07 op TAILQ_INSERT_TAIL(&tabshead, tab, tabs);
765 bcb0b073 2021-03-07 op load_url(tab, url);
769 bcb0b073 2021-03-07 op event_loopbreak();
773 5e11c00c 2021-03-02 op ui_init(void)
775 5e11c00c 2021-03-02 op setlocale(LC_ALL, "");
782 5e11c00c 2021-03-02 op intrflush(stdscr, FALSE);
783 5e11c00c 2021-03-02 op keypad(stdscr, TRUE);
785 48e9d457 2021-03-06 op if ((tabline = newwin(1, COLS, 0, 0)) == NULL)
787 48e9d457 2021-03-06 op if ((body = newwin(LINES - 3, COLS, 1, 0)) == NULL)
789 48e9d457 2021-03-06 op if ((modeline = newwin(1, COLS, LINES-2, 0)) == NULL)
791 48e9d457 2021-03-06 op if ((minibuf = newwin(1, COLS, LINES-1, 0)) == NULL)
794 48e9d457 2021-03-06 op body_lines = LINES-3;
795 48e9d457 2021-03-06 op body_cols = COLS;
797 48e9d457 2021-03-06 op scrollok(body, TRUE);
799 5e11c00c 2021-03-02 op /* non-blocking input */
800 48e9d457 2021-03-06 op wtimeout(body, 0);
802 48e9d457 2021-03-06 op mvwprintw(body, 0, 0, "");
804 5e11c00c 2021-03-02 op event_set(&stdioev, 0, EV_READ | EV_PERSIST, dispatch_stdio, NULL);
805 5e11c00c 2021-03-02 op event_add(&stdioev, NULL);
807 5e11c00c 2021-03-02 op signal_set(&winchev, SIGWINCH, handle_resize, NULL);
808 5e11c00c 2021-03-02 op signal_add(&winchev, NULL);
816 5e11c00c 2021-03-02 op ui_on_tab_refresh(struct tab *tab)
818 5e11c00c 2021-03-02 op if (!(tab->flags & TAB_CURRENT))
821 1d08c280 2021-03-06 op wrap_page(tab);
822 5e11c00c 2021-03-02 op redraw_tab(tab);
