gridmenu.c (view raw)
1/*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * (C)opyright MMVI Sander van Dijk <a dot h dot vandijk at gmail dot com>
4 * See LICENSE file for license details.
5 */
6
7#include <ctype.h>
8#include <stdlib.h>
9#include <stdio.h>
10#include <string.h>
11#include <sys/stat.h>
12#include <sys/wait.h>
13#include <time.h>
14#include <unistd.h>
15#include <X11/Xlib.h>
16#include <X11/cursorfont.h>
17#include <X11/Xutil.h>
18#include <X11/keysym.h>
19
20#include <blitz.h>
21#include <cext.h>
22
23typedef struct Item Item;
24
25struct Item {
26 Item *next; /* traverses all items */
27 Item *left, *right; /* traverses items matching current search pattern */
28 char *text;
29};
30
31static char *title = nil;
32static Bool done = False;
33static int ret = 0;
34static char text[4096];
35static BlitzColor selcolor;
36static BlitzColor normcolor;
37static Window win;
38static XRectangle mrect;
39static Item *allitem = nil; /* first of all items */
40static Item *item = nil; /* first of pattern matching items */
41static Item *sel = nil;
42static Item *nextoff = nil;
43static Item *prevoff = nil;
44static Item *curroff = nil;
45static int nitem = 0;
46static unsigned int cmdw = 0;
47static unsigned int twidth = 0;
48static unsigned int cwidth = 0;
49static Blitz blz = {0};
50static BlitzBrush brush = {0};
51static const int seek = 30; /* 30px */
52
53static void draw_menu(void);
54static void handle_kpress(XKeyEvent * e);
55
56static char version[] = "wmiimenu - " VERSION ", (C)opyright MMIV-MMVI Anselm R. Garbe\n";
57
58static void
59usage()
60{
61 fprintf(stderr, "%s", "usage: wmiimenu [-v] [-t <title>]\n");
62 exit(1);
63}
64
65static void
66update_offsets()
67{
68 unsigned int tw, w = cmdw + 2 * seek;
69
70 if(!curroff)
71 return;
72
73 for(nextoff = curroff; nextoff; nextoff=nextoff->right) {
74 tw = blitz_textwidth(brush.font, nextoff->text);
75 if(tw > mrect.width / 3)
76 tw = mrect.width / 3;
77 w += tw + mrect.height;
78 if(w > mrect.width)
79 break;
80 }
81
82 w = cmdw + 2 * seek;
83 for(prevoff = curroff; prevoff && prevoff->left; prevoff=prevoff->left) {
84 tw = blitz_textwidth(brush.font, prevoff->left->text);
85 if(tw > mrect.width / 3)
86 tw = mrect.width / 3;
87 w += tw + mrect.height;
88 if(w > mrect.width)
89 break;
90 }
91}
92
93static void
94update_items(char *pattern)
95{
96 unsigned int plen = strlen(pattern);
97 Item *i, *j;
98
99 if(!pattern)
100 return;
101
102 if(!title || *pattern)
103 cmdw = cwidth;
104 else
105 cmdw = twidth;
106
107 item = j = nil;
108 nitem = 0;
109
110 for(i = allitem; i; i=i->next)
111 if(!plen || !strncmp(pattern, i->text, plen)) {
112 if(!j)
113 item = i;
114 else
115 j->right = i;
116 i->left = j;
117 i->right = nil;
118 j = i;
119 nitem++;
120 }
121 for(i = allitem; i; i=i->next)
122 if(plen && strncmp(pattern, i->text, plen)
123 && strstr(i->text, pattern)) {
124 if(!j)
125 item = i;
126 else
127 j->right = i;
128 i->left = j;
129 i->right = nil;
130 j = i;
131 nitem++;
132 }
133
134 curroff = prevoff = nextoff = sel = item;
135
136 update_offsets();
137}
138
139/* creates brush structs for brush mode drawing */
140static void
141draw_menu()
142{
143 unsigned int offx = 0;
144
145 Item *i;
146
147 brush.align = WEST;
148
149 brush.rect = mrect;
150 brush.rect.x = 0;
151 brush.rect.y = 0;
152 brush.color = normcolor;
153 brush.border = False;
154 blitz_draw_tile(&brush);
155
156 /* print command */
157 if(!title || text[0]) {
158 brush.color = normcolor;
159 cmdw = cwidth;
160 if(cmdw && item)
161 brush.rect.width = cmdw;
162 blitz_draw_label(&brush, text);
163 }
164 else {
165 cmdw = twidth;
166 brush.color = selcolor;
167 brush.rect.width = cmdw;
168 blitz_draw_label(&brush, title);
169 }
170 offx += brush.rect.width;
171
172 brush.align = CENTER;
173 if(curroff) {
174 brush.color = normcolor;
175 brush.rect.x = offx;
176 brush.rect.width = seek;
177 offx += brush.rect.width;
178 blitz_draw_label(&brush, (curroff && curroff->left) ? "<" : nil);
179
180 /* determine maximum items */
181 for(i = curroff; i != nextoff; i=i->right) {
182 brush.color = normcolor;
183 brush.border = False;
184 brush.rect.x = offx;
185 brush.rect.width = blitz_textwidth(brush.font, i->text);
186 if(brush.rect.width > mrect.width / 3)
187 brush.rect.width = mrect.width / 3;
188 brush.rect.width += mrect.height;
189 if(sel == i) {
190 brush.color = selcolor;
191 brush.border = True;
192 }
193 blitz_draw_label(&brush, i->text);
194 offx += brush.rect.width;
195 }
196
197 brush.color = normcolor;
198 brush.border = False;
199 brush.rect.x = mrect.width - seek;
200 brush.rect.width = seek;
201 blitz_draw_label(&brush, nextoff ? ">" : nil);
202 }
203 XCopyArea(blz.dpy, brush.drawable, win, brush.gc, 0, 0, mrect.width,
204 mrect.height, 0, 0);
205 XSync(blz.dpy, False);
206}
207
208static void
209handle_kpress(XKeyEvent * e)
210{
211 KeySym ksym;
212 char buf[32];
213 int num, prev_nitem;
214 unsigned int i, len = strlen(text);
215
216 buf[0] = 0;
217 num = XLookupString(e, buf, sizeof(buf), &ksym, 0);
218
219 if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
220 || IsMiscFunctionKey(ksym) || IsPFKey(ksym)
221 || IsPrivateKeypadKey(ksym))
222 return;
223
224 /* first check if a control mask is omitted */
225 if(e->state & ControlMask) {
226 switch (ksym) {
227 case XK_H:
228 case XK_h:
229 ksym = XK_BackSpace;
230 break;
231 case XK_I:
232 case XK_i:
233 ksym = XK_Tab;
234 break;
235 case XK_J:
236 case XK_j:
237 ksym = XK_Return;
238 break;
239 case XK_N:
240 case XK_n:
241 ksym = XK_Right;
242 break;
243 case XK_P:
244 case XK_p:
245 ksym = XK_Left;
246 break;
247 case XK_U:
248 case XK_u:
249 text[0] = 0;
250 update_items(text);
251 draw_menu();
252 return;
253 break;
254 case XK_bracketleft:
255 ksym = XK_Escape;
256 break;
257 default: /* ignore other control sequences */
258 return;
259 break;
260 }
261 }
262 switch (ksym) {
263 case XK_Left:
264 if(!(sel && sel->left))
265 return;
266 sel=sel->left;
267 if(sel->right == curroff) {
268 curroff = prevoff;
269 update_offsets();
270 }
271 break;
272 case XK_Tab:
273 if(!sel)
274 return;
275 cext_strlcpy(text, sel->text, sizeof(text));
276 update_items(text);
277 break;
278 case XK_Right:
279 if(!(sel && sel->right))
280 return;
281 sel=sel->right;
282 if(sel == nextoff) {
283 curroff = nextoff;
284 update_offsets();
285 }
286 break;
287 case XK_Return:
288 if(e->state & ShiftMask) {
289 if(text)
290 fprintf(stdout, "%s", text);
291 }
292 else if(sel)
293 fprintf(stdout, "%s", sel->text);
294 else if(text)
295 fprintf(stdout, "%s", text);
296 fflush(stdout);
297 done = True;
298 break;
299 case XK_Escape:
300 ret = 1;
301 done = True;
302 break;
303 case XK_BackSpace:
304 if((i = len)) {
305 prev_nitem = nitem;
306 do {
307 text[--i] = 0;
308 update_items(text);
309 } while(i && nitem && prev_nitem == nitem);
310 update_items(text);
311 }
312 break;
313 default:
314 if((num == 1) && !iscntrl((int) buf[0])) {
315 buf[num] = 0;
316 if(len > 0)
317 cext_strlcat(text, buf, sizeof(text));
318 else
319 cext_strlcpy(text, buf, sizeof(text));
320 update_items(text);
321 }
322 }
323 draw_menu();
324}
325
326static char *
327read_allitems()
328{
329 static char *maxname = nil;
330 char *p, buf[1024];
331 unsigned int len = 0, max = 0;
332 Item *i, *new;
333
334 i = nil;
335 while(fgets(buf, sizeof(buf), stdin)) {
336 len = strlen(buf);
337 if (buf[len - 1] == '\n')
338 buf[len - 1] = 0;
339 p = cext_estrdup(buf);
340 if(max < len) {
341 maxname = p;
342 max = len;
343 }
344
345 new = cext_emalloc(sizeof(Item));
346 new->next = new->left = new->right = nil;
347 new->text = p;
348 if(!i)
349 allitem = new;
350 else
351 i->next = new;
352 i = new;
353 }
354
355 return maxname;
356}
357
358int
359main(int argc, char *argv[])
360{
361 int i;
362 XSetWindowAttributes wa;
363 char *maxname, *p;
364 BlitzFont font = {0};
365 GC gc;
366 Drawable pmap;
367 XEvent ev;
368
369 /* command line args */
370 for(i = 1; i < argc; i++) {
371 if (argv[i][0] == '-')
372 switch (argv[i][1]) {
373 case 'v':
374 fprintf(stdout, "%s", version);
375 exit(0);
376 break;
377 case 't':
378 if(++i < argc)
379 title = argv[i];
380 else
381 usage();
382 break;
383 default:
384 usage();
385 break;
386 }
387 else
388 usage();
389 }
390
391 blz.dpy = XOpenDisplay(0);
392 if(!blz.dpy) {
393 fprintf(stderr, "%s", "wmiimenu: cannot open dpy\n");
394 exit(1);
395 }
396 blz.screen = DefaultScreen(blz.dpy);
397 blz.root = RootWindow(blz.dpy, blz.screen);
398
399 maxname = read_allitems();
400
401 /* grab as early as possible, but after reading all items!!! */
402 while(XGrabKeyboard
403 (blz.dpy, blz.root, True, GrabModeAsync,
404 GrabModeAsync, CurrentTime) != GrabSuccess)
405 usleep(1000);
406
407 font.fontstr = getenv("WMII_FONT");
408 if (!font.fontstr)
409 font.fontstr = cext_estrdup(BLITZ_FONT);
410 blitz_loadfont(&blz, &font);
411
412 if((p = getenv("WMII_NORMCOLORS")))
413 cext_strlcpy(normcolor.colstr, p, sizeof(normcolor.colstr));
414 if(strlen(normcolor.colstr) != 23)
415 cext_strlcpy(normcolor.colstr, BLITZ_NORMCOLORS, sizeof(normcolor.colstr));
416 blitz_loadcolor(&blz, &normcolor);
417
418 if((p = getenv("WMII_SELCOLORS")))
419 cext_strlcpy(selcolor.colstr, p, sizeof(selcolor.colstr));
420 if(strlen(selcolor.colstr) != 23)
421 cext_strlcpy(selcolor.colstr, BLITZ_SELCOLORS, sizeof(selcolor.colstr));
422 blitz_loadcolor(&blz, &selcolor);
423
424 wa.override_redirect = 1;
425 wa.background_pixmap = ParentRelative;
426 wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask
427 | SubstructureRedirectMask | SubstructureNotifyMask;
428
429 mrect.width = DisplayWidth(blz.dpy, blz.screen);
430 mrect.height = font.ascent + font.descent + 4;
431 mrect.y = DisplayHeight(blz.dpy, blz.screen) - mrect.height;
432 mrect.x = 0;
433
434 win = XCreateWindow(blz.dpy, blz.root, mrect.x, mrect.y,
435 mrect.width, mrect.height, 0, DefaultDepth(blz.dpy, blz.screen),
436 CopyFromParent, DefaultVisual(blz.dpy, blz.screen),
437 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
438 XDefineCursor(blz.dpy, win, XCreateFontCursor(blz.dpy, XC_xterm));
439 XSync(blz.dpy, False);
440
441 /* pixmap */
442 gc = XCreateGC(blz.dpy, win, 0, 0);
443 pmap = XCreatePixmap(blz.dpy, win, mrect.width, mrect.height,
444 DefaultDepth(blz.dpy, blz.screen));
445
446 XSync(blz.dpy, False);
447
448 brush.blitz = &blz;
449 brush.color = normcolor;
450 brush.drawable = pmap;
451 brush.gc = gc;
452 brush.font = &font;
453
454 if(maxname)
455 cwidth = blitz_textwidth(brush.font, maxname) + mrect.height;
456 if(cwidth > mrect.width / 3)
457 cwidth = mrect.width / 3;
458
459 if(title) {
460 twidth = blitz_textwidth(brush.font, title) + mrect.height;
461 if(twidth > mrect.width / 3)
462 twidth = mrect.width / 3;
463 }
464
465 cmdw = title ? twidth : cwidth;
466
467 text[0] = 0;
468 update_items(text);
469 XMapRaised(blz.dpy, win);
470 draw_menu();
471 XSync(blz.dpy, False);
472
473 /* main event loop */
474 while(!XNextEvent(blz.dpy, &ev)) {
475 switch (ev.type) {
476 case KeyPress:
477 handle_kpress(&ev.xkey);
478 break;
479 case Expose:
480 if(ev.xexpose.count == 0) {
481 draw_menu();
482 }
483 break;
484 default:
485 break;
486 }
487 if(done)
488 break;
489 }
490
491 XUngrabKeyboard(blz.dpy, CurrentTime);
492 XFreePixmap(blz.dpy, pmap);
493 XFreeGC(blz.dpy, gc);
494 XDestroyWindow(blz.dpy, win);
495 XCloseDisplay(blz.dpy);
496
497 return ret;
498}