1 f5e234d6 2018-05-18 omar.polo /* mymenu -- simple dmenu alternative */
3 f5e234d6 2018-05-18 omar.polo /* Copyright (C) 2018 Omar Polo <omar.polo@europecom.net>
5 f5e234d6 2018-05-18 omar.polo * This program is free software: you can redistribute it and/or modify
6 f5e234d6 2018-05-18 omar.polo * it under the terms of the GNU General Public License as published by
7 f5e234d6 2018-05-18 omar.polo * the Free Software Foundation, either version 3 of the License, or
8 f5e234d6 2018-05-18 omar.polo * (at your option) any later version.
10 f5e234d6 2018-05-18 omar.polo * This program is distributed in the hope that it will be useful,
11 f5e234d6 2018-05-18 omar.polo * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 f5e234d6 2018-05-18 omar.polo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 f5e234d6 2018-05-18 omar.polo * GNU General Public License for more details.
15 f5e234d6 2018-05-18 omar.polo * You should have received a copy of the GNU General Public License
16 f5e234d6 2018-05-18 omar.polo * along with this program. If not, see <https://www.gnu.org/licenses/>.
19 f5e234d6 2018-05-18 omar.polo #include <stdio.h>
20 f5e234d6 2018-05-18 omar.polo #include <stdlib.h>
21 f5e234d6 2018-05-18 omar.polo #include <string.h> // strdup, strnlen, ...
22 f5e234d6 2018-05-18 omar.polo #include <ctype.h> // isalnum
23 f5e234d6 2018-05-18 omar.polo #include <locale.h> // setlocale
24 f5e234d6 2018-05-18 omar.polo #include <unistd.h>
25 f5e234d6 2018-05-18 omar.polo #include <sysexits.h>
26 f5e234d6 2018-05-18 omar.polo #include <stdbool.h>
27 f5e234d6 2018-05-18 omar.polo #include <limits.h>
28 f5e234d6 2018-05-18 omar.polo #include <errno.h>
30 f5e234d6 2018-05-18 omar.polo #include <X11/Xlib.h>
31 f5e234d6 2018-05-18 omar.polo #include <X11/Xutil.h> // XLookupString
32 f5e234d6 2018-05-18 omar.polo #include <X11/Xresource.h>
33 f5e234d6 2018-05-18 omar.polo #include <X11/Xcms.h> // colors
34 347d23da 2018-05-19 omar.polo #include <X11/keysym.h>
36 f5e234d6 2018-05-18 omar.polo #ifdef USE_XINERAMA
37 f5e234d6 2018-05-18 omar.polo # include <X11/extensions/Xinerama.h>
40 f5e234d6 2018-05-18 omar.polo #define nil NULL
41 347d23da 2018-05-19 omar.polo #define resname "MyMenu"
42 347d23da 2018-05-19 omar.polo #define resclass "mymenu"
44 f5e234d6 2018-05-18 omar.polo #define MIN(X, Y) (((X) < (Y)) ? (X) : (Y))
45 f5e234d6 2018-05-18 omar.polo #define MAX(a, b) ((a) > (b) ? (a) : (b))
46 f5e234d6 2018-05-18 omar.polo #define OVERLAP(a,b,c,d) (((a)==(c) && (b)==(d)) || MIN((a)+(b), (c)+(d)) - MAX((a), (c)) > 0)
47 f5e234d6 2018-05-18 omar.polo #define INTERSECT(x,y,w,h,x1,y1,w1,h1) (OVERLAP((x),(w),(x1),(w1)) && OVERLAP((y),(h),(y1),(h1)))
49 f5e234d6 2018-05-18 omar.polo #define update_completions(cs, text, lines) { \
50 f5e234d6 2018-05-18 omar.polo compl_delete(cs); \
51 f5e234d6 2018-05-18 omar.polo cs = filter(text, lines); \
54 f5e234d6 2018-05-18 omar.polo // TODO: dynamic?
55 f5e234d6 2018-05-18 omar.polo #define MAX_ITEMS 256
57 f5e234d6 2018-05-18 omar.polo #define TODO(s) { \
58 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "TODO! " s "\n"); \
61 f5e234d6 2018-05-18 omar.polo #define cannot_allocate_memory { \
62 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "Could not allocate memory\n"); \
63 f5e234d6 2018-05-18 omar.polo exit(EX_UNAVAILABLE); \
66 f5e234d6 2018-05-18 omar.polo #define check_allocation(a) { \
67 f5e234d6 2018-05-18 omar.polo if (a == nil) \
68 f5e234d6 2018-05-18 omar.polo cannot_allocate_memory; \
71 f5e234d6 2018-05-18 omar.polo enum state {LOOPING, OK, ERR};
73 f5e234d6 2018-05-18 omar.polo struct rendering {
74 f5e234d6 2018-05-18 omar.polo Display *d;
75 f5e234d6 2018-05-18 omar.polo Window w;
76 f5e234d6 2018-05-18 omar.polo GC prompt;
77 f5e234d6 2018-05-18 omar.polo GC prompt_bg;
78 f5e234d6 2018-05-18 omar.polo GC completion;
79 f5e234d6 2018-05-18 omar.polo GC completion_bg;
80 f5e234d6 2018-05-18 omar.polo GC completion_highlighted;
81 f5e234d6 2018-05-18 omar.polo GC completion_highlighted_bg;
82 f5e234d6 2018-05-18 omar.polo int width;
83 f5e234d6 2018-05-18 omar.polo int height;
84 347d23da 2018-05-19 omar.polo XFontSet *font;
85 36a15a9f 2018-05-19 omar.polo bool horizontal_layout;
88 f5e234d6 2018-05-18 omar.polo struct completions {
89 f5e234d6 2018-05-18 omar.polo char *completion;
90 f5e234d6 2018-05-18 omar.polo bool selected;
91 f5e234d6 2018-05-18 omar.polo struct completions *next;
94 f5e234d6 2018-05-18 omar.polo struct completions *compl_new() {
95 f5e234d6 2018-05-18 omar.polo struct completions *c = malloc(sizeof(struct completions));
97 f5e234d6 2018-05-18 omar.polo if (c == nil)
98 f5e234d6 2018-05-18 omar.polo return c;
100 f5e234d6 2018-05-18 omar.polo c->completion = nil;
101 f5e234d6 2018-05-18 omar.polo c->selected = false;
102 f5e234d6 2018-05-18 omar.polo c->next = nil;
103 f5e234d6 2018-05-18 omar.polo return c;
106 f5e234d6 2018-05-18 omar.polo void compl_delete(struct completions *c) {
107 f5e234d6 2018-05-18 omar.polo free(c);
110 347d23da 2018-05-19 omar.polo struct completions *compl_select_next(struct completions *c, bool n) {
111 347d23da 2018-05-19 omar.polo if (c == nil)
112 347d23da 2018-05-19 omar.polo return nil;
113 347d23da 2018-05-19 omar.polo if (n) {
114 347d23da 2018-05-19 omar.polo c->selected = true;
115 347d23da 2018-05-19 omar.polo return c;
118 347d23da 2018-05-19 omar.polo struct completions *orig = c;
119 347d23da 2018-05-19 omar.polo while (c != nil) {
120 347d23da 2018-05-19 omar.polo if (c->selected) {
121 347d23da 2018-05-19 omar.polo c->selected = false;
122 347d23da 2018-05-19 omar.polo if (c->next != nil) {
123 347d23da 2018-05-19 omar.polo // the current one is selected and the next one exists
124 347d23da 2018-05-19 omar.polo c->next->selected = true;
125 347d23da 2018-05-19 omar.polo return c->next;
126 347d23da 2018-05-19 omar.polo } else {
127 347d23da 2018-05-19 omar.polo // the current one is selected and the next one is nill,
128 347d23da 2018-05-19 omar.polo // select the first one
129 347d23da 2018-05-19 omar.polo orig->selected = true;
130 347d23da 2018-05-19 omar.polo return orig;
133 347d23da 2018-05-19 omar.polo c = c->next;
135 347d23da 2018-05-19 omar.polo return nil;
138 347d23da 2018-05-19 omar.polo struct completions *compl_select_prev(struct completions *c, bool n) {
139 347d23da 2018-05-19 omar.polo if (c == nil)
140 347d23da 2018-05-19 omar.polo return nil;
142 347d23da 2018-05-19 omar.polo struct completions *cc = c;
144 347d23da 2018-05-19 omar.polo if (n) // select the last one
145 347d23da 2018-05-19 omar.polo while (cc != nil) {
146 347d23da 2018-05-19 omar.polo if (cc->next == nil) {
147 347d23da 2018-05-19 omar.polo cc->selected = true;
148 347d23da 2018-05-19 omar.polo return cc;
150 347d23da 2018-05-19 omar.polo cc = cc->next;
152 347d23da 2018-05-19 omar.polo else // select the previous one
153 347d23da 2018-05-19 omar.polo while (cc != nil) {
154 347d23da 2018-05-19 omar.polo if (cc->next != nil && cc->next->selected) {
155 347d23da 2018-05-19 omar.polo cc->next->selected = false;
156 347d23da 2018-05-19 omar.polo cc->selected = true;
157 347d23da 2018-05-19 omar.polo return cc;
159 347d23da 2018-05-19 omar.polo cc = cc->next;
162 347d23da 2018-05-19 omar.polo return nil;
165 f5e234d6 2018-05-18 omar.polo struct completions *filter(char *text, char **lines) {
166 f5e234d6 2018-05-18 omar.polo int i = 0;
167 f5e234d6 2018-05-18 omar.polo struct completions *root = compl_new();
168 f5e234d6 2018-05-18 omar.polo struct completions *c = root;
170 f5e234d6 2018-05-18 omar.polo for (;;) {
171 f5e234d6 2018-05-18 omar.polo char *l = lines[i];
172 f5e234d6 2018-05-18 omar.polo if (l == nil)
173 f5e234d6 2018-05-18 omar.polo break;
175 f5e234d6 2018-05-18 omar.polo if (strstr(l, text) != nil) {
176 f5e234d6 2018-05-18 omar.polo c->next = compl_new();
177 f5e234d6 2018-05-18 omar.polo c = c->next;
178 f5e234d6 2018-05-18 omar.polo c->completion = l;
184 f5e234d6 2018-05-18 omar.polo struct completions *r = root->next;
185 f5e234d6 2018-05-18 omar.polo compl_delete(root);
186 f5e234d6 2018-05-18 omar.polo return r;
189 f5e234d6 2018-05-18 omar.polo // push the character c at the end of the string pointed by p
190 f5e234d6 2018-05-18 omar.polo int pushc(char **p, int maxlen, char c) {
191 f5e234d6 2018-05-18 omar.polo int len = strnlen(*p, maxlen);
193 f5e234d6 2018-05-18 omar.polo if (!(len < maxlen -2)) {
194 f5e234d6 2018-05-18 omar.polo maxlen += maxlen >> 1;
195 f5e234d6 2018-05-18 omar.polo char *newptr = realloc(*p, maxlen);
196 f5e234d6 2018-05-18 omar.polo if (newptr == nil) { // bad!
197 f5e234d6 2018-05-18 omar.polo return -1;
199 f5e234d6 2018-05-18 omar.polo *p = newptr;
202 f5e234d6 2018-05-18 omar.polo (*p)[len] = c;
203 f5e234d6 2018-05-18 omar.polo (*p)[len+1] = '\0';
204 f5e234d6 2018-05-18 omar.polo return maxlen;
207 347d23da 2018-05-19 omar.polo int utf8strnlen(char *s, int maxlen) {
208 347d23da 2018-05-19 omar.polo int len = 0;
209 347d23da 2018-05-19 omar.polo while (*s && maxlen > 0) {
210 347d23da 2018-05-19 omar.polo len += (*s++ & 0xc0) != 0x80;
211 347d23da 2018-05-19 omar.polo maxlen--;
213 347d23da 2018-05-19 omar.polo return len;
216 347d23da 2018-05-19 omar.polo // remove the last *glyph* from the *utf8* string!
217 347d23da 2018-05-19 omar.polo // this is different from just setting the last byte to 0 (in some
218 347d23da 2018-05-19 omar.polo // cases ofc). The actual implementation is quite inefficient because
219 347d23da 2018-05-19 omar.polo // it remove the last char until the number of glyphs doesn't change
220 f5e234d6 2018-05-18 omar.polo void popc(char *p, int maxlen) {
221 f5e234d6 2018-05-18 omar.polo int len = strnlen(p, maxlen);
223 347d23da 2018-05-19 omar.polo if (len == 0)
224 347d23da 2018-05-19 omar.polo return;
226 347d23da 2018-05-19 omar.polo int ulen = utf8strnlen(p, maxlen);
227 347d23da 2018-05-19 omar.polo while (len > 0 && utf8strnlen(p, maxlen) == ulen) {
228 347d23da 2018-05-19 omar.polo len--;
229 347d23da 2018-05-19 omar.polo p[len] = 0;
233 f5e234d6 2018-05-18 omar.polo // read an arbitrary long line from stdin and return a pointer to it
234 f5e234d6 2018-05-18 omar.polo // TODO: resize the allocated memory to exactly fit the string once
235 f5e234d6 2018-05-18 omar.polo // read?
236 f5e234d6 2018-05-18 omar.polo char *readline(bool *eof) {
237 f5e234d6 2018-05-18 omar.polo int maxlen = 8;
238 f5e234d6 2018-05-18 omar.polo char *str = calloc(maxlen, sizeof(char));
239 f5e234d6 2018-05-18 omar.polo if (str == nil) {
240 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "Cannot allocate memory!\n");
241 f5e234d6 2018-05-18 omar.polo exit(EX_UNAVAILABLE);
244 f5e234d6 2018-05-18 omar.polo int c;
245 f5e234d6 2018-05-18 omar.polo while((c = getchar()) != EOF) {
246 f5e234d6 2018-05-18 omar.polo if (c == '\n')
247 f5e234d6 2018-05-18 omar.polo return str;
249 f5e234d6 2018-05-18 omar.polo maxlen = pushc(&str, maxlen, c);
251 f5e234d6 2018-05-18 omar.polo if (maxlen == -1) {
252 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "Cannot allocate memory!\n");
253 f5e234d6 2018-05-18 omar.polo exit(EX_UNAVAILABLE);
256 f5e234d6 2018-05-18 omar.polo *eof = true;
257 f5e234d6 2018-05-18 omar.polo return str;
260 f5e234d6 2018-05-18 omar.polo int readlines (char **lines) {
261 f5e234d6 2018-05-18 omar.polo bool finished = false;
262 f5e234d6 2018-05-18 omar.polo int n = 0;
263 f5e234d6 2018-05-18 omar.polo while (n < MAX_ITEMS) {
264 f5e234d6 2018-05-18 omar.polo lines[n] = readline(&finished);
266 f5e234d6 2018-05-18 omar.polo if (strlen(lines[n]) == 0 || lines[n][0] == '\n')
267 f5e234d6 2018-05-18 omar.polo --n; // forget about this line
269 f5e234d6 2018-05-18 omar.polo if (finished)
270 f5e234d6 2018-05-18 omar.polo break;
274 f5e234d6 2018-05-18 omar.polo /* for (n = 0; n < MAX_ITEMS -1; ++n) { */
275 f5e234d6 2018-05-18 omar.polo /* lines[n] = readline(&finished); */
276 f5e234d6 2018-05-18 omar.polo /* if (finished) */
277 f5e234d6 2018-05-18 omar.polo /* break; */
278 f5e234d6 2018-05-18 omar.polo /* } */
280 f5e234d6 2018-05-18 omar.polo lines[n] = nil;
281 f5e234d6 2018-05-18 omar.polo return n;
284 f5e234d6 2018-05-18 omar.polo // |------------------|----------------------------------------------|
285 f5e234d6 2018-05-18 omar.polo // | 20 char text | completion | completion | completion | compl |
286 f5e234d6 2018-05-18 omar.polo // |------------------|----------------------------------------------|
287 36a15a9f 2018-05-19 omar.polo void draw_horizontally(struct rendering *r, char *text, struct completions *cs) {
288 f5e234d6 2018-05-18 omar.polo // TODO: make these dynamic?
289 f5e234d6 2018-05-18 omar.polo int prompt_width = 20; // char
290 f5e234d6 2018-05-18 omar.polo int padding = 10;
291 347d23da 2018-05-19 omar.polo /* int start_at = XTextWidth(r->font, " ", 1) * prompt_width + padding; */
293 347d23da 2018-05-19 omar.polo XRectangle rect;
294 347d23da 2018-05-19 omar.polo int start_at = XmbTextExtents(*r->font, " ", 1, nil, &rect);
295 347d23da 2018-05-19 omar.polo start_at = start_at * prompt_width + padding;
297 347d23da 2018-05-19 omar.polo int texty = (rect.height + r->height) >>1;
299 f5e234d6 2018-05-18 omar.polo XFillRectangle(r->d, r->w, r->prompt_bg, 0, 0, start_at, r->height);
301 f5e234d6 2018-05-18 omar.polo int text_len = strlen(text);
302 f5e234d6 2018-05-18 omar.polo if (text_len > prompt_width)
303 f5e234d6 2018-05-18 omar.polo text = text + (text_len - prompt_width);
304 347d23da 2018-05-19 omar.polo /* XDrawString(r->d, r->w, r->prompt, padding, texty, text, MIN(text_len, prompt_width)); */
305 347d23da 2018-05-19 omar.polo Xutf8DrawString(r->d, r->w, *r->font, r->prompt, padding, texty, text, MIN(text_len, prompt_width));
307 f5e234d6 2018-05-18 omar.polo XFillRectangle(r->d, r->w, r->completion_bg, start_at, 0, r->width, r->height);
309 f5e234d6 2018-05-18 omar.polo while (cs != nil) {
310 f5e234d6 2018-05-18 omar.polo GC g = cs->selected ? r->completion_highlighted : r->completion;
311 f5e234d6 2018-05-18 omar.polo GC h = cs->selected ? r->completion_highlighted_bg : r->completion_bg;
313 f5e234d6 2018-05-18 omar.polo int len = strlen(cs->completion);
314 347d23da 2018-05-19 omar.polo /* int text_width = XTextWidth(r->font, cs->completion, len); */
315 347d23da 2018-05-19 omar.polo int text_width = XmbTextExtents(*r->font, cs->completion, len, nil, nil);
317 f5e234d6 2018-05-18 omar.polo XFillRectangle(r->d, r->w, h, start_at, 0, text_width + padding*2, r->height);
319 347d23da 2018-05-19 omar.polo /* XDrawString(r->d, r->w, g, start_at + padding, texty, cs->completion, len); */
320 347d23da 2018-05-19 omar.polo Xutf8DrawString(r->d, r->w, *r->font, g, start_at + padding, texty, cs->completion, len);
322 f5e234d6 2018-05-18 omar.polo start_at += text_width + padding * 2;
324 f5e234d6 2018-05-18 omar.polo cs = cs->next;
327 f5e234d6 2018-05-18 omar.polo XFlush(r->d);
330 36a15a9f 2018-05-19 omar.polo // |-----------------------------------------------------------------|
331 36a15a9f 2018-05-19 omar.polo // | prompt |
332 36a15a9f 2018-05-19 omar.polo // |-----------------------------------------------------------------|
333 36a15a9f 2018-05-19 omar.polo // | completion |
334 36a15a9f 2018-05-19 omar.polo // |-----------------------------------------------------------------|
335 36a15a9f 2018-05-19 omar.polo // | completion |
336 36a15a9f 2018-05-19 omar.polo // |-----------------------------------------------------------------|
337 36a15a9f 2018-05-19 omar.polo // TODO: dunno why but in the call to Xutf8DrawString, by logic,
338 36a15a9f 2018-05-19 omar.polo // should be padding and not padding*2, but the text doesn't seem to
339 36a15a9f 2018-05-19 omar.polo // be vertically centered otherwise....
340 36a15a9f 2018-05-19 omar.polo void draw_vertically(struct rendering *r, char *text, struct completions *cs) {
341 36a15a9f 2018-05-19 omar.polo int padding = 10; // TODO make this dynamic
343 36a15a9f 2018-05-19 omar.polo XRectangle rect;
344 36a15a9f 2018-05-19 omar.polo XmbTextExtents(*r->font, "fjpgl", 5, &rect, nil);
345 36a15a9f 2018-05-19 omar.polo int start_at = rect.height + padding*2;
347 36a15a9f 2018-05-19 omar.polo XFillRectangle(r->d, r->w, r->completion_bg, 0, 0, r->width, r->height);
348 36a15a9f 2018-05-19 omar.polo XFillRectangle(r->d, r->w, r->prompt_bg, 0, 0, r->width, start_at);
349 36a15a9f 2018-05-19 omar.polo Xutf8DrawString(r->d, r->w, *r->font, r->prompt, padding, padding*2, text, strlen(text));
351 36a15a9f 2018-05-19 omar.polo while (cs != nil) {
352 36a15a9f 2018-05-19 omar.polo GC g = cs->selected ? r->completion_highlighted : r->completion;
353 36a15a9f 2018-05-19 omar.polo GC h = cs->selected ? r->completion_highlighted_bg : r->completion_bg;
355 36a15a9f 2018-05-19 omar.polo int len = strlen(cs->completion);
356 36a15a9f 2018-05-19 omar.polo XmbTextExtents(*r->font, cs->completion, len, &rect, nil);
357 36a15a9f 2018-05-19 omar.polo XFillRectangle(r->d, r->w, h, 0, start_at, r->width, rect.height + padding*2);
358 36a15a9f 2018-05-19 omar.polo Xutf8DrawString(r->d, r->w, *r->font, g, padding, start_at + padding*2, cs->completion, len);
360 36a15a9f 2018-05-19 omar.polo start_at += rect.height + padding *2;
361 36a15a9f 2018-05-19 omar.polo cs = cs->next;
364 36a15a9f 2018-05-19 omar.polo XFlush(r->d);
367 36a15a9f 2018-05-19 omar.polo void draw(struct rendering *r, char *text, struct completions *cs) {
368 36a15a9f 2018-05-19 omar.polo if (r->horizontal_layout)
369 36a15a9f 2018-05-19 omar.polo draw_horizontally(r, text, cs);
371 36a15a9f 2018-05-19 omar.polo draw_vertically(r, text, cs);
374 f5e234d6 2018-05-18 omar.polo /* Set some WM stuff */
375 f5e234d6 2018-05-18 omar.polo void set_win_atoms_hints(Display *d, Window w, int width, int height) {
376 f5e234d6 2018-05-18 omar.polo Atom type;
377 f5e234d6 2018-05-18 omar.polo type = XInternAtom(d, "_NET_WM_WINDOW_TYPE_DOCK", false);
378 f5e234d6 2018-05-18 omar.polo XChangeProperty(
381 f5e234d6 2018-05-18 omar.polo XInternAtom(d, "_NET_WM_WINDOW_TYPE", false),
382 f5e234d6 2018-05-18 omar.polo XInternAtom(d, "ATOM", false),
384 f5e234d6 2018-05-18 omar.polo PropModeReplace,
385 f5e234d6 2018-05-18 omar.polo (unsigned char *)&type,
389 f5e234d6 2018-05-18 omar.polo /* some window managers honor this properties */
390 f5e234d6 2018-05-18 omar.polo type = XInternAtom(d, "_NET_WM_STATE_ABOVE", false);
391 f5e234d6 2018-05-18 omar.polo XChangeProperty(d,
393 f5e234d6 2018-05-18 omar.polo XInternAtom(d, "_NET_WM_STATE", false),
394 f5e234d6 2018-05-18 omar.polo XInternAtom(d, "ATOM", false),
396 f5e234d6 2018-05-18 omar.polo PropModeReplace,
397 f5e234d6 2018-05-18 omar.polo (unsigned char *)&type,
401 f5e234d6 2018-05-18 omar.polo type = XInternAtom(d, "_NET_WM_STATE_FOCUSED", false);
402 f5e234d6 2018-05-18 omar.polo XChangeProperty(d,
404 f5e234d6 2018-05-18 omar.polo XInternAtom(d, "_NET_WM_STATE", false),
405 f5e234d6 2018-05-18 omar.polo XInternAtom(d, "ATOM", false),
407 f5e234d6 2018-05-18 omar.polo PropModeAppend,
408 f5e234d6 2018-05-18 omar.polo (unsigned char *)&type,
412 f5e234d6 2018-05-18 omar.polo // setting window hints
413 f5e234d6 2018-05-18 omar.polo XClassHint *class_hint = XAllocClassHint();
414 f5e234d6 2018-05-18 omar.polo if (class_hint == nil) {
415 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "Could not allocate memory for class hint\n");
416 f5e234d6 2018-05-18 omar.polo exit(EX_UNAVAILABLE);
418 f5e234d6 2018-05-18 omar.polo class_hint->res_name = "mymenu";
419 f5e234d6 2018-05-18 omar.polo class_hint->res_class = "mymenu";
420 f5e234d6 2018-05-18 omar.polo XSetClassHint(d, w, class_hint);
421 f5e234d6 2018-05-18 omar.polo XFree(class_hint);
423 f5e234d6 2018-05-18 omar.polo XSizeHints *size_hint = XAllocSizeHints();
424 f5e234d6 2018-05-18 omar.polo if (size_hint == nil) {
425 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "Could not allocate memory for size hint\n");
426 f5e234d6 2018-05-18 omar.polo exit(EX_UNAVAILABLE);
428 f5e234d6 2018-05-18 omar.polo size_hint->min_width = width;
429 f5e234d6 2018-05-18 omar.polo size_hint->base_width = width;
430 f5e234d6 2018-05-18 omar.polo size_hint->min_height = height;
431 f5e234d6 2018-05-18 omar.polo size_hint->base_height = height;
433 f5e234d6 2018-05-18 omar.polo XFlush(d);
436 f5e234d6 2018-05-18 omar.polo void get_wh(Display *d, Window *w, int *width, int *height) {
437 f5e234d6 2018-05-18 omar.polo XWindowAttributes win_attr;
438 f5e234d6 2018-05-18 omar.polo XGetWindowAttributes(d, *w, &win_attr);
439 f5e234d6 2018-05-18 omar.polo *height = win_attr.height;
440 f5e234d6 2018-05-18 omar.polo *width = win_attr.width;
443 f5e234d6 2018-05-18 omar.polo // I know this may seem a little hackish BUT is the only way I managed
444 f5e234d6 2018-05-18 omar.polo // to actually grab that goddam keyboard. Only one call to
445 f5e234d6 2018-05-18 omar.polo // XGrabKeyboard does not always end up with the keyboard grabbed!
446 f5e234d6 2018-05-18 omar.polo int take_keyboard(Display *d, Window w) {
447 686e9237 2018-05-18 omar.polo int i;
448 686e9237 2018-05-18 omar.polo for (i = 0; i < 100; i++) {
449 686e9237 2018-05-18 omar.polo if (XGrabKeyboard(d, w, True, GrabModeAsync, GrabModeAsync, CurrentTime) == GrabSuccess)
450 686e9237 2018-05-18 omar.polo return 1;
451 686e9237 2018-05-18 omar.polo usleep(1000);
453 686e9237 2018-05-18 omar.polo return 0;
456 f5e234d6 2018-05-18 omar.polo void release_keyboard(Display *d) {
457 686e9237 2018-05-18 omar.polo XUngrabKeyboard(d, CurrentTime);
460 f5e234d6 2018-05-18 omar.polo int parse_integer(const char *str, int default_value, int max) {
461 f5e234d6 2018-05-18 omar.polo int len = strlen(str);
462 f5e234d6 2018-05-18 omar.polo if (len > 0 && str[len-1] == '%') {
463 f5e234d6 2018-05-18 omar.polo char *cpy = strdup(str);
464 f5e234d6 2018-05-18 omar.polo check_allocation(cpy);
465 f5e234d6 2018-05-18 omar.polo cpy[len-1] = '\0';
466 f5e234d6 2018-05-18 omar.polo int val = parse_integer(cpy, default_value, max);
467 f5e234d6 2018-05-18 omar.polo free(cpy);
468 f5e234d6 2018-05-18 omar.polo return val * max / 100;
471 f5e234d6 2018-05-18 omar.polo errno = 0;
472 f5e234d6 2018-05-18 omar.polo char *ep;
473 f5e234d6 2018-05-18 omar.polo long lval = strtol(str, &ep, 10);
474 f5e234d6 2018-05-18 omar.polo if (str[0] == '\0' || *ep != '\0') { // NaN
475 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "'%s' is not a valid number! Using %d as default.\n", str, default_value);
476 f5e234d6 2018-05-18 omar.polo return default_value;
478 f5e234d6 2018-05-18 omar.polo if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) ||
479 f5e234d6 2018-05-18 omar.polo (lval > INT_MAX || lval < INT_MIN)) {
480 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "%s out of range! Using %d as default.\n", str, default_value);
481 f5e234d6 2018-05-18 omar.polo return default_value;
483 f5e234d6 2018-05-18 omar.polo return lval;
486 f5e234d6 2018-05-18 omar.polo int parse_int_with_middle(const char *str, int default_value, int max, int self) {
487 f5e234d6 2018-05-18 omar.polo if (!strcmp(str, "middle")) {
488 f5e234d6 2018-05-18 omar.polo return (max - self)/2;
490 f5e234d6 2018-05-18 omar.polo return parse_integer(str, default_value, max);
493 f5e234d6 2018-05-18 omar.polo int main() {
494 f5e234d6 2018-05-18 omar.polo char *lines[MAX_ITEMS] = {0};
495 f5e234d6 2018-05-18 omar.polo readlines(lines);
497 f5e234d6 2018-05-18 omar.polo setlocale(LC_ALL, getenv("LANG"));
499 f5e234d6 2018-05-18 omar.polo enum state status = LOOPING;
501 f5e234d6 2018-05-18 omar.polo // where the monitor start (used only with xinerama)
502 f5e234d6 2018-05-18 omar.polo int offset_x = 0;
503 f5e234d6 2018-05-18 omar.polo int offset_y = 0;
505 f5e234d6 2018-05-18 omar.polo // width and height of the window
506 f5e234d6 2018-05-18 omar.polo int width = 400;
507 f5e234d6 2018-05-18 omar.polo int height = 20;
509 f5e234d6 2018-05-18 omar.polo // position on the screen
510 f5e234d6 2018-05-18 omar.polo int x = 0;
511 f5e234d6 2018-05-18 omar.polo int y = 0;
513 f5e234d6 2018-05-18 omar.polo char *fontname = strdup("fixed");
514 f5e234d6 2018-05-18 omar.polo check_allocation(fontname);
516 f5e234d6 2018-05-18 omar.polo int textlen = 10;
517 f5e234d6 2018-05-18 omar.polo char *text = malloc(textlen * sizeof(char));
518 f5e234d6 2018-05-18 omar.polo check_allocation(text);
520 f5e234d6 2018-05-18 omar.polo struct completions *cs = filter(text, lines);
521 f5e234d6 2018-05-18 omar.polo bool nothing_selected = true;
523 f5e234d6 2018-05-18 omar.polo // start talking to xorg
524 f5e234d6 2018-05-18 omar.polo Display *d = XOpenDisplay(nil);
525 f5e234d6 2018-05-18 omar.polo if (d == nil) {
526 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "Could not open display!\n");
527 f5e234d6 2018-05-18 omar.polo return EX_UNAVAILABLE;
530 f5e234d6 2018-05-18 omar.polo // get display size
531 f5e234d6 2018-05-18 omar.polo // XXX: is getting the default root window dimension correct?
532 f5e234d6 2018-05-18 omar.polo XWindowAttributes xwa;
533 f5e234d6 2018-05-18 omar.polo XGetWindowAttributes(d, DefaultRootWindow(d), &xwa);
534 f5e234d6 2018-05-18 omar.polo int d_width = xwa.width;
535 f5e234d6 2018-05-18 omar.polo int d_height = xwa.height;
537 f5e234d6 2018-05-18 omar.polo #ifdef USE_XINERAMA
538 f5e234d6 2018-05-18 omar.polo // TODO: this bit still needs to be improved
539 f5e234d6 2018-05-18 omar.polo if (XineramaIsActive(d)) {
540 f5e234d6 2018-05-18 omar.polo int monitors;
541 f5e234d6 2018-05-18 omar.polo XineramaScreenInfo *info = XineramaQueryScreens(d, &monitors);
542 f5e234d6 2018-05-18 omar.polo if (info)
543 f5e234d6 2018-05-18 omar.polo for (int i = 0; i < monitors; ++i) {
544 f5e234d6 2018-05-18 omar.polo if (INTERSECT(x, y, 1, 1, info[i].x_org, info[i].y_org, info[i].width, info[i].height)) {
545 f5e234d6 2018-05-18 omar.polo offset_x = info[x].x_org;
546 f5e234d6 2018-05-18 omar.polo offset_y = info[y].y_org;
547 f5e234d6 2018-05-18 omar.polo d_width = info[i].width;
548 f5e234d6 2018-05-18 omar.polo d_height = info[i].height;
551 f5e234d6 2018-05-18 omar.polo XFree(info);
553 f5e234d6 2018-05-18 omar.polo #endif
555 f5e234d6 2018-05-18 omar.polo /* fprintf(stderr, "offset_x:\t%d\n" */
556 f5e234d6 2018-05-18 omar.polo /* "offset_y:\t%d\n" */
557 f5e234d6 2018-05-18 omar.polo /* "d_width:\t%d\n" */
558 f5e234d6 2018-05-18 omar.polo /* "d_height:\t%d\n" */
559 f5e234d6 2018-05-18 omar.polo /* , offset_x, offset_y, d_width, d_height); */
561 f5e234d6 2018-05-18 omar.polo Colormap cmap = DefaultColormap(d, DefaultScreen(d));
562 f5e234d6 2018-05-18 omar.polo XColor p_fg, p_bg,
563 f5e234d6 2018-05-18 omar.polo compl_fg, compl_bg,
564 f5e234d6 2018-05-18 omar.polo compl_highlighted_fg, compl_highlighted_bg;
566 36a15a9f 2018-05-19 omar.polo bool horizontal_layout = true;
568 f5e234d6 2018-05-18 omar.polo // read resource
569 f5e234d6 2018-05-18 omar.polo XrmInitialize();
570 f5e234d6 2018-05-18 omar.polo char *xrm = XResourceManagerString(d);
571 347d23da 2018-05-19 omar.polo XrmDatabase xdb = nil;
572 f5e234d6 2018-05-18 omar.polo if (xrm != nil) {
573 347d23da 2018-05-19 omar.polo xdb = XrmGetStringDatabase(xrm);
574 f5e234d6 2018-05-18 omar.polo XrmValue value;
575 f5e234d6 2018-05-18 omar.polo char *datatype[20];
577 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.font", "*", datatype, &value) == true) {
578 f5e234d6 2018-05-18 omar.polo fontname = strdup(value.addr);
579 f5e234d6 2018-05-18 omar.polo check_allocation(fontname);
582 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "no font defined, using %s\n", fontname);
584 36a15a9f 2018-05-19 omar.polo if (XrmGetResource(xdb, "MyMenu.layout", "*", datatype, &value) == true) {
585 36a15a9f 2018-05-19 omar.polo char *v = strdup(value.addr);
586 36a15a9f 2018-05-19 omar.polo check_allocation(v);
587 36a15a9f 2018-05-19 omar.polo horizontal_layout = !strcmp(v, "horizontal");
588 36a15a9f 2018-05-19 omar.polo free(v);
591 36a15a9f 2018-05-19 omar.polo fprintf(stderr, "no layout defined, using horizontal\n");
593 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.width", "*", datatype, &value) == true)
594 f5e234d6 2018-05-18 omar.polo width = parse_integer(value.addr, width, d_width);
596 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "no width defined, using %d\n", width);
598 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.height", "*", datatype, &value) == true)
599 f5e234d6 2018-05-18 omar.polo height = parse_integer(value.addr, height, d_height);
601 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "no height defined, using %d\n", height);
603 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.x", "*", datatype, &value) == true)
604 f5e234d6 2018-05-18 omar.polo x = parse_int_with_middle(value.addr, x, d_width, width);
606 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "no x defined, using %d\n", width);
608 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.y", "*", datatype, &value) == true)
609 f5e234d6 2018-05-18 omar.polo y = parse_int_with_middle(value.addr, y, d_height, height);
611 f5e234d6 2018-05-18 omar.polo fprintf(stderr, "no y defined, using %d\n", height);
613 f5e234d6 2018-05-18 omar.polo XColor tmp;
614 f5e234d6 2018-05-18 omar.polo // TODO: tmp needs to be free'd after every allocation?
616 f5e234d6 2018-05-18 omar.polo // prompt
617 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.prompt.foreground", "*", datatype, &value) == true)
618 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, value.addr, &p_fg, &tmp);
620 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "white", &p_fg, &tmp);
622 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.prompt.background", "*", datatype, &value) == true)
623 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, value.addr, &p_bg, &tmp);
625 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "black", &p_bg, &tmp);
627 f5e234d6 2018-05-18 omar.polo // completion
628 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.completion.foreground", "*", datatype, &value) == true)
629 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, value.addr, &compl_fg, &tmp);
631 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "white", &compl_fg, &tmp);
633 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.completion.background", "*", datatype, &value) == true)
634 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, value.addr, &compl_bg, &tmp);
636 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "black", &compl_bg, &tmp);
638 f5e234d6 2018-05-18 omar.polo // completion highlighted
639 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.completion_highlighted.foreground", "*", datatype, &value) == true)
640 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, value.addr, &compl_highlighted_fg, &tmp);
642 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "black", &compl_highlighted_fg, &tmp);
644 f5e234d6 2018-05-18 omar.polo if (XrmGetResource(xdb, "MyMenu.completion_highlighted.background", "*", datatype, &value) == true)
645 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, value.addr, &compl_highlighted_bg, &tmp);
647 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "white", &compl_highlighted_bg, &tmp);
648 f5e234d6 2018-05-18 omar.polo } else {
649 f5e234d6 2018-05-18 omar.polo XColor tmp;
650 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "white", &p_fg, &tmp);
651 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "black", &p_bg, &tmp);
652 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "white", &compl_fg, &tmp);
653 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "black", &compl_bg, &tmp);
654 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "black", &compl_highlighted_fg, &tmp);
655 f5e234d6 2018-05-18 omar.polo XAllocNamedColor(d, cmap, "white", &compl_highlighted_bg, &tmp);
658 f5e234d6 2018-05-18 omar.polo // load the font
659 347d23da 2018-05-19 omar.polo /* XFontStruct *font = XLoadQueryFont(d, fontname); */
660 347d23da 2018-05-19 omar.polo /* if (font == nil) { */
661 347d23da 2018-05-19 omar.polo /* fprintf(stderr, "Unable to load %s font\n", fontname); */
662 347d23da 2018-05-19 omar.polo /* font = XLoadQueryFont(d, "fixed"); */
663 347d23da 2018-05-19 omar.polo /* } */
664 347d23da 2018-05-19 omar.polo // load the font
665 347d23da 2018-05-19 omar.polo char **missing_charset_list;
666 347d23da 2018-05-19 omar.polo int missing_charset_count;
667 347d23da 2018-05-19 omar.polo XFontSet font = XCreateFontSet(d, fontname, &missing_charset_list, &missing_charset_count, nil);
668 f5e234d6 2018-05-18 omar.polo if (font == nil) {
669 347d23da 2018-05-19 omar.polo fprintf(stderr, "Unable to load the font(s) %s\n", fontname);
670 347d23da 2018-05-19 omar.polo return EX_UNAVAILABLE;
673 f5e234d6 2018-05-18 omar.polo // create the window
674 f5e234d6 2018-05-18 omar.polo XSetWindowAttributes attr;
676 f5e234d6 2018-05-18 omar.polo Window w = XCreateWindow(d, // display
677 f5e234d6 2018-05-18 omar.polo DefaultRootWindow(d), // parent
678 f5e234d6 2018-05-18 omar.polo x + offset_x, y + offset_y, // x y
679 f5e234d6 2018-05-18 omar.polo width, height, // w h
680 f5e234d6 2018-05-18 omar.polo 0, // border width
681 f5e234d6 2018-05-18 omar.polo DefaultDepth(d, DefaultScreen(d)), // depth
682 f5e234d6 2018-05-18 omar.polo InputOutput, // class
683 f5e234d6 2018-05-18 omar.polo DefaultVisual(d, DefaultScreen(d)), // visual
684 f5e234d6 2018-05-18 omar.polo 0, // value mask
685 f5e234d6 2018-05-18 omar.polo &attr);
687 f5e234d6 2018-05-18 omar.polo set_win_atoms_hints(d, w, width, height);
689 f5e234d6 2018-05-18 omar.polo // we want some events
690 f5e234d6 2018-05-18 omar.polo XSelectInput(d, w, StructureNotifyMask | KeyPressMask | KeyReleaseMask | KeymapStateMask);
692 f5e234d6 2018-05-18 omar.polo // make the window appear on the screen
693 f5e234d6 2018-05-18 omar.polo XMapWindow(d, w);
695 f5e234d6 2018-05-18 omar.polo // wait for the MapNotify event (i.e. the event "window rendered")
696 f5e234d6 2018-05-18 omar.polo for (;;) {
697 f5e234d6 2018-05-18 omar.polo XEvent e;
698 f5e234d6 2018-05-18 omar.polo XNextEvent(d, &e);
699 f5e234d6 2018-05-18 omar.polo if (e.type == MapNotify)
700 f5e234d6 2018-05-18 omar.polo break;
703 f5e234d6 2018-05-18 omar.polo // get the *real* width & height after the window was rendered
704 f5e234d6 2018-05-18 omar.polo get_wh(d, &w, &width, &height);
706 f5e234d6 2018-05-18 omar.polo // grab keyboard
707 f5e234d6 2018-05-18 omar.polo take_keyboard(d, w);
709 f5e234d6 2018-05-18 omar.polo // Create some graphics contexts
710 f5e234d6 2018-05-18 omar.polo XGCValues values;
711 347d23da 2018-05-19 omar.polo /* values.font = font->fid; */
713 f5e234d6 2018-05-18 omar.polo struct rendering r = {
714 f5e234d6 2018-05-18 omar.polo .d = d,
715 f5e234d6 2018-05-18 omar.polo .w = w,
716 347d23da 2018-05-19 omar.polo .prompt = XCreateGC(d, w, 0, &values),
717 347d23da 2018-05-19 omar.polo .prompt_bg = XCreateGC(d, w, 0, &values),
718 347d23da 2018-05-19 omar.polo .completion = XCreateGC(d, w, 0, &values),
719 347d23da 2018-05-19 omar.polo .completion_bg = XCreateGC(d, w, 0, &values),
720 347d23da 2018-05-19 omar.polo .completion_highlighted = XCreateGC(d, w, 0, &values),
721 347d23da 2018-05-19 omar.polo .completion_highlighted_bg = XCreateGC(d, w, 0, &values),
722 347d23da 2018-05-19 omar.polo /* .prompt = XCreateGC(d, w, GCFont, &values), */
723 347d23da 2018-05-19 omar.polo /* .prompt_bg = XCreateGC(d, w, GCFont, &values), */
724 347d23da 2018-05-19 omar.polo /* .completion = XCreateGC(d, w, GCFont, &values), */
725 347d23da 2018-05-19 omar.polo /* .completion_bg = XCreateGC(d, w, GCFont, &values), */
726 347d23da 2018-05-19 omar.polo /* .completion_highlighted = XCreateGC(d, w, GCFont, &values), */
727 347d23da 2018-05-19 omar.polo /* .completion_highlighted_bg = XCreateGC(d, w, GCFont, &values), */
728 f5e234d6 2018-05-18 omar.polo .width = width,
729 f5e234d6 2018-05-18 omar.polo .height = height,
730 36a15a9f 2018-05-19 omar.polo .font = &font,
731 36a15a9f 2018-05-19 omar.polo .horizontal_layout = horizontal_layout
734 f5e234d6 2018-05-18 omar.polo // load the colors in our GCs
735 f5e234d6 2018-05-18 omar.polo XSetForeground(d, r.prompt, p_fg.pixel);
736 f5e234d6 2018-05-18 omar.polo XSetForeground(d, r.prompt_bg, p_bg.pixel);
737 f5e234d6 2018-05-18 omar.polo XSetForeground(d, r.completion, compl_fg.pixel);
738 f5e234d6 2018-05-18 omar.polo XSetForeground(d, r.completion_bg, compl_bg.pixel);
739 f5e234d6 2018-05-18 omar.polo XSetForeground(d, r.completion_highlighted, compl_highlighted_fg.pixel);
740 f5e234d6 2018-05-18 omar.polo XSetForeground(d, r.completion_highlighted_bg, compl_highlighted_bg.pixel);
742 347d23da 2018-05-19 omar.polo // open the X input method
743 347d23da 2018-05-19 omar.polo XIM xim = XOpenIM(d, xdb, resname, resclass);
744 347d23da 2018-05-19 omar.polo check_allocation(xim);
746 347d23da 2018-05-19 omar.polo XIMStyles *xis = nil;
747 347d23da 2018-05-19 omar.polo if (XGetIMValues(xim, XNQueryInputStyle, &xis, NULL) || !xis) {
748 347d23da 2018-05-19 omar.polo fprintf(stderr, "Input Styles could not be retrieved\n");
749 347d23da 2018-05-19 omar.polo return EX_UNAVAILABLE;
752 347d23da 2018-05-19 omar.polo XIMStyle bestMatchStyle = 0;
753 347d23da 2018-05-19 omar.polo for (int i = 0; i < xis->count_styles; ++i) {
754 347d23da 2018-05-19 omar.polo XIMStyle ts = xis->supported_styles[i];
755 347d23da 2018-05-19 omar.polo if (ts == (XIMPreeditNothing | XIMStatusNothing)) {
756 347d23da 2018-05-19 omar.polo bestMatchStyle = ts;
757 347d23da 2018-05-19 omar.polo break;
760 347d23da 2018-05-19 omar.polo XFree(xis);
762 347d23da 2018-05-19 omar.polo if (!bestMatchStyle) {
763 347d23da 2018-05-19 omar.polo fprintf(stderr, "No matching input style could be determined\n");
766 347d23da 2018-05-19 omar.polo XIC xic = XCreateIC(xim, XNInputStyle, bestMatchStyle, XNClientWindow, w, XNFocusWindow, w, NULL);
767 347d23da 2018-05-19 omar.polo check_allocation(xic);
769 f5e234d6 2018-05-18 omar.polo // draw the window for the first time
770 f5e234d6 2018-05-18 omar.polo draw(&r, text, cs);
772 f5e234d6 2018-05-18 omar.polo // main loop
773 f5e234d6 2018-05-18 omar.polo while (status == LOOPING) {
774 f5e234d6 2018-05-18 omar.polo XEvent e;
775 f5e234d6 2018-05-18 omar.polo XNextEvent(d, &e);
777 347d23da 2018-05-19 omar.polo if (XFilterEvent(&e, w))
778 347d23da 2018-05-19 omar.polo continue;
780 f5e234d6 2018-05-18 omar.polo switch (e.type) {
781 f5e234d6 2018-05-18 omar.polo case KeymapNotify:
782 f5e234d6 2018-05-18 omar.polo XRefreshKeyboardMapping(&e.xmapping);
783 f5e234d6 2018-05-18 omar.polo break;
785 f5e234d6 2018-05-18 omar.polo case KeyRelease: break; // ignore this
787 347d23da 2018-05-19 omar.polo case KeyPress: {
788 347d23da 2018-05-19 omar.polo XKeyPressedEvent *ev = (XKeyPressedEvent*)&e;
790 347d23da 2018-05-19 omar.polo if (ev->keycode == XKeysymToKeycode(d, XK_Tab)) {
791 347d23da 2018-05-19 omar.polo bool shift = (ev->state & ShiftMask);
792 347d23da 2018-05-19 omar.polo struct completions *n = shift ? compl_select_prev(cs, nothing_selected)
793 347d23da 2018-05-19 omar.polo : compl_select_next(cs, nothing_selected);
794 347d23da 2018-05-19 omar.polo if (n != nil) {
795 347d23da 2018-05-19 omar.polo nothing_selected = false;
796 347d23da 2018-05-19 omar.polo free(text);
797 347d23da 2018-05-19 omar.polo text = strdup(n->completion);
798 347d23da 2018-05-19 omar.polo if (text == nil) {
799 347d23da 2018-05-19 omar.polo fprintf(stderr, "Memory allocation error!\n");
800 347d23da 2018-05-19 omar.polo status = ERR;
801 347d23da 2018-05-19 omar.polo break;
803 347d23da 2018-05-19 omar.polo textlen = strlen(text);
805 f5e234d6 2018-05-18 omar.polo draw(&r, text, cs);
806 f5e234d6 2018-05-18 omar.polo break;
809 347d23da 2018-05-19 omar.polo if (ev->keycode == XKeysymToKeycode(d, XK_BackSpace)) {
810 f5e234d6 2018-05-18 omar.polo nothing_selected = true;
811 f5e234d6 2018-05-18 omar.polo popc(text, textlen);
812 f5e234d6 2018-05-18 omar.polo update_completions(cs, text, lines);
813 f5e234d6 2018-05-18 omar.polo draw(&r, text, cs);
814 f5e234d6 2018-05-18 omar.polo break;
817 347d23da 2018-05-19 omar.polo if (ev->keycode == XKeysymToKeycode(d, XK_Return)) {
818 347d23da 2018-05-19 omar.polo status = OK;
819 347d23da 2018-05-19 omar.polo break;
822 347d23da 2018-05-19 omar.polo if (ev->keycode == XKeysymToKeycode(d, XK_Escape)) {
823 347d23da 2018-05-19 omar.polo status = ERR;
824 347d23da 2018-05-19 omar.polo break;
827 347d23da 2018-05-19 omar.polo // try to read what the user pressed
828 347d23da 2018-05-19 omar.polo int symbol = 0;
829 347d23da 2018-05-19 omar.polo Status s = 0;
830 347d23da 2018-05-19 omar.polo Xutf8LookupString(xic, ev, (char*)&symbol, 4, 0, &s);
832 347d23da 2018-05-19 omar.polo if (s == XBufferOverflow) {
833 347d23da 2018-05-19 omar.polo // should not happen since there are no utf-8 characters
834 347d23da 2018-05-19 omar.polo // larger than 24bits, but is something to be aware of when
835 347d23da 2018-05-19 omar.polo // used to directly write to a string buffer
836 347d23da 2018-05-19 omar.polo fprintf(stderr, "Buffer overflow when trying to create keyboard symbol map.\n");
837 347d23da 2018-05-19 omar.polo break;
839 347d23da 2018-05-19 omar.polo char *str = (char*)&symbol;
841 347d23da 2018-05-19 omar.polo if (ev->state & ControlMask) {
842 347d23da 2018-05-19 omar.polo // check for some key bindings
843 347d23da 2018-05-19 omar.polo if (!strcmp(str, "")) { // C-u
844 f5e234d6 2018-05-18 omar.polo nothing_selected = true;
845 347d23da 2018-05-19 omar.polo for (int i = 0; i < textlen; ++i)
846 347d23da 2018-05-19 omar.polo text[i] = 0;
847 f5e234d6 2018-05-18 omar.polo update_completions(cs, text, lines);
849 347d23da 2018-05-19 omar.polo if (!strcmp(str, "")) { // C-h
850 347d23da 2018-05-19 omar.polo nothing_selected = true;
851 347d23da 2018-05-19 omar.polo popc(text, textlen);
852 347d23da 2018-05-19 omar.polo update_completions(cs, text, lines);
854 347d23da 2018-05-19 omar.polo if (!strcmp(str, "")) { // C-w
855 347d23da 2018-05-19 omar.polo nothing_selected = true;
857 347d23da 2018-05-19 omar.polo // `textlen` is the length of the allocated string, not the
858 347d23da 2018-05-19 omar.polo // length of the ACTUAL string
859 347d23da 2018-05-19 omar.polo int p = strlen(text) - 1;
860 347d23da 2018-05-19 omar.polo if (p >= 0) { // delete the current char
861 347d23da 2018-05-19 omar.polo text[p] = 0;
864 347d23da 2018-05-19 omar.polo while (p >= 0 && isalnum(text[p])) {
865 347d23da 2018-05-19 omar.polo text[p] = 0;
868 347d23da 2018-05-19 omar.polo // erase also trailing white space
869 347d23da 2018-05-19 omar.polo while (p >= 0 && isspace(text[p])) {
870 347d23da 2018-05-19 omar.polo text[p] = 0;
873 347d23da 2018-05-19 omar.polo update_completions(cs, text, lines);
875 347d23da 2018-05-19 omar.polo if (!strcmp(str, "\r")) { // C-m
876 347d23da 2018-05-19 omar.polo status = OK;
878 347d23da 2018-05-19 omar.polo draw(&r, text, cs);
879 f5e234d6 2018-05-18 omar.polo break;
882 347d23da 2018-05-19 omar.polo int str_len = strlen(str);
883 347d23da 2018-05-19 omar.polo for (int i = 0; i < str_len; ++i) {
884 347d23da 2018-05-19 omar.polo textlen = pushc(&text, textlen, str[i]);
885 347d23da 2018-05-19 omar.polo if (textlen == -1) {
886 347d23da 2018-05-19 omar.polo fprintf(stderr, "Memory allocation error\n");
887 347d23da 2018-05-19 omar.polo status = ERR;
888 347d23da 2018-05-19 omar.polo break;
890 347d23da 2018-05-19 omar.polo nothing_selected = true;
891 347d23da 2018-05-19 omar.polo update_completions(cs, text, lines);
895 f5e234d6 2018-05-18 omar.polo draw(&r, text, cs);
896 f5e234d6 2018-05-18 omar.polo break;
898 f5e234d6 2018-05-18 omar.polo default:
899 347d23da 2018-05-19 omar.polo fprintf(stderr, "Unknown event %d\n", e.type);
903 f5e234d6 2018-05-18 omar.polo release_keyboard(d);
905 f5e234d6 2018-05-18 omar.polo if (status == OK)
906 f5e234d6 2018-05-18 omar.polo printf("%s\n", text);
908 f5e234d6 2018-05-18 omar.polo free(fontname);
909 f5e234d6 2018-05-18 omar.polo free(text);
910 f5e234d6 2018-05-18 omar.polo compl_delete(cs);
912 f5e234d6 2018-05-18 omar.polo /* XDestroyWindow(d, w); */
913 f5e234d6 2018-05-18 omar.polo XCloseDisplay(d);
915 f5e234d6 2018-05-18 omar.polo return status == OK ? 0 : 1;