a7732690 |
1 | #include <err.h> |
2 | #include <stdio.h> |
3 | #include <stdlib.h> |
4 | #include <string.h> |
5 | #include <unistd.h> |
6 | #include <X11/Xlib.h> |
7 | #include <X11/Xutil.h> |
f644b8bc |
8 | #include <X11/Xresource.h> |
858338d9 |
9 | #include <X11/XKBlib.h> |
dbeb9940 |
10 | #include <X11/Xft/Xft.h> |
858338d9 |
11 | |
d2435fcd |
12 | #define PROGNAME "xmenu" |
858338d9 |
13 | #define ITEMPREV 0 |
14 | #define ITEMNEXT 1 |
a7732690 |
15 | |
16 | /* macros */ |
17 | #define LEN(x) (sizeof (x) / sizeof (x[0])) |
f1583285 |
18 | #define MAX(x,y) ((x)>(y)?(x):(y)) |
d8a7caf2 |
19 | #define MIN(x,y) ((x)<(y)?(x):(y)) |
a7732690 |
20 | |
21 | /* color enum */ |
22 | enum {ColorFG, ColorBG, ColorLast}; |
23 | |
24 | /* draw context structure */ |
25 | struct DC { |
dbeb9940 |
26 | XftColor normal[ColorLast]; |
27 | XftColor selected[ColorLast]; |
fd530f3f |
28 | XftColor border; |
29 | XftColor separator; |
a7732690 |
30 | |
31 | Drawable d; |
32 | GC gc; |
dbeb9940 |
33 | XftFont *font; |
a7732690 |
34 | }; |
35 | |
36 | /* menu geometry structure */ |
fd530f3f |
37 | struct MenuGeometry { |
a7732690 |
38 | int itemb; /* item border */ |
39 | int itemw; /* item width */ |
40 | int itemh; /* item height */ |
a80fee22 |
41 | int border; /* window border width */ |
42 | int separator; /* menu separator width */ |
a7732690 |
43 | }; |
44 | |
45 | /* screen geometry structure */ |
46 | struct ScreenGeometry { |
47 | int cursx, cursy; /* cursor position */ |
48 | int screenw, screenh; /* screen width and height */ |
49 | }; |
50 | |
51 | /* menu item structure */ |
52 | struct Item { |
d8a7caf2 |
53 | char *label; /* string to be drawed on menu */ |
54 | char *output; /* string to be outputed when item is clicked */ |
55 | int y; /* item y position relative to menu */ |
56 | int h; /* item height */ |
57 | size_t labellen; /* strlen(label) */ |
858338d9 |
58 | struct Item *prev; /* previous item */ |
d8a7caf2 |
59 | struct Item *next; /* next item */ |
60 | struct Menu *submenu; /* submenu spawned by clicking on item */ |
a7732690 |
61 | }; |
62 | |
63 | /* menu structure */ |
64 | struct Menu { |
d8a7caf2 |
65 | struct Menu *parent; /* parent menu */ |
66 | struct Item *caller; /* item that spawned the menu */ |
67 | struct Item *list; /* list of items contained by the menu */ |
68 | struct Item *selected; /* item currently selected in the menu */ |
69 | int x, y, w, h; /* menu geometry */ |
70 | unsigned level; /* menu level relative to root */ |
71 | Drawable pixmap; /* pixmap to draw the menu on */ |
dbeb9940 |
72 | XftDraw *draw; |
d8a7caf2 |
73 | Window win; /* menu window to map on the screen */ |
a7732690 |
74 | }; |
75 | |
76 | /* function declarations */ |
dbeb9940 |
77 | static void getcolor(const char *s, XftColor *color); |
f644b8bc |
78 | static void getresources(void); |
a7732690 |
79 | static void setupdc(void); |
80 | static void setupgeom(void); |
a80fee22 |
81 | static struct Item *allocitem(const char *label, const char *output); |
a7732690 |
82 | static struct Menu *allocmenu(struct Menu *parent, struct Item *list, unsigned level); |
0c1a7864 |
83 | static struct Menu *getmenu(Window win); |
84 | static struct Item *getitem(struct Menu *menu, int y); |
fd530f3f |
85 | static void drawseparator(struct Menu *menu, struct Item *item); |
86 | static void drawitem(struct Menu *menu, struct Item *item, XftColor *color); |
a7732690 |
87 | static void drawmenu(void); |
88 | static void calcscreengeom(void); |
89 | static void calcmenu(struct Menu *menu); |
85003546 |
90 | static void grabpointer(void); |
91 | static void grabkeyboard(void); |
a7732690 |
92 | static void setcurrmenu(struct Menu *currmenu_new); |
93 | static void parsestdin(void); |
94 | static void run(void); |
f15fc339 |
95 | static void freewindow(struct Menu *menu); |
08f16589 |
96 | static void cleanup(void); |
a7732690 |
97 | static void usage(void); |
98 | |
99 | /* X variables */ |
100 | static Colormap colormap; |
101 | static Display *dpy; |
dbeb9940 |
102 | static Visual *visual; |
a7732690 |
103 | static Window rootwin; |
104 | static int screen; |
105 | static struct DC dc; |
fd530f3f |
106 | static struct ScreenGeometry screengeom; |
a7732690 |
107 | |
108 | /* menu variables */ |
109 | static struct Menu *rootmenu = NULL; |
110 | static struct Menu *currmenu = NULL; |
fd530f3f |
111 | static struct MenuGeometry geom; |
a7732690 |
112 | |
a7732690 |
113 | #include "config.h" |
114 | |
115 | int |
116 | main(int argc, char *argv[]) |
117 | { |
118 | int ch; |
119 | |
27443900 |
120 | while ((ch = getopt(argc, argv, "")) != -1) { |
a7732690 |
121 | switch (ch) { |
a7732690 |
122 | default: |
123 | usage(); |
124 | break; |
125 | } |
126 | } |
127 | argc -= optind; |
128 | argv += optind; |
129 | |
130 | /* open connection to server and set X variables */ |
131 | if ((dpy = XOpenDisplay(NULL)) == NULL) |
132 | errx(1, "cannot open display"); |
133 | screen = DefaultScreen(dpy); |
dbeb9940 |
134 | visual = DefaultVisual(dpy, screen); |
a7732690 |
135 | rootwin = RootWindow(dpy, screen); |
136 | colormap = DefaultColormap(dpy, screen); |
21a9aaec |
137 | |
a7732690 |
138 | /* setup */ |
f644b8bc |
139 | getresources(); |
a7732690 |
140 | setupdc(); |
141 | setupgeom(); |
a7732690 |
142 | |
143 | /* generate menus and recalculate them */ |
144 | parsestdin(); |
145 | if (rootmenu == NULL) |
146 | errx(1, "no menu generated"); |
147 | calcscreengeom(); |
148 | calcmenu(rootmenu); |
149 | |
465d07db |
150 | /* grab mouse and keyboard */ |
27443900 |
151 | grabpointer(); |
152 | grabkeyboard(); |
465d07db |
153 | |
a7732690 |
154 | /* run event loop */ |
155 | run(); |
156 | |
08f16589 |
157 | cleanup(); |
21a9aaec |
158 | return 0; |
159 | } |
160 | |
f644b8bc |
161 | /* read xrdb for configuration options */ |
162 | static void |
163 | getresources(void) |
164 | { |
165 | char *xrm; |
166 | long n; |
fd530f3f |
167 | char *type; |
168 | XrmDatabase xdb; |
169 | XrmValue xval; |
f644b8bc |
170 | |
171 | XrmInitialize(); |
fd530f3f |
172 | if ((xrm = XResourceManagerString(dpy)) == NULL) |
173 | return; |
174 | |
175 | xdb = XrmGetStringDatabase(xrm); |
176 | |
177 | if (XrmGetResource(xdb, "xmenu.borderWidth", "*", &type, &xval) == True) |
178 | if ((n = strtol(xval.addr, NULL, 10)) > 0) |
179 | border_pixels = n; |
180 | if (XrmGetResource(xdb, "xmenu.separatorWidth", "*", &type, &xval) == True) |
181 | if ((n = strtol(xval.addr, NULL, 10)) > 0) |
182 | separator_pixels = n; |
183 | if (XrmGetResource(xdb, "xmenu.padding", "*", &type, &xval) == True) |
184 | if ((n = strtol(xval.addr, NULL, 10)) > 0) |
185 | padding_pixels = n; |
186 | if (XrmGetResource(xdb, "xmenu.width", "*", &type, &xval) == True) |
187 | if ((n = strtol(xval.addr, NULL, 10)) > 0) |
188 | width_pixels = n; |
189 | if (XrmGetResource(xdb, "xmenu.background", "*", &type, &xval) == True) |
190 | background_color = strdup(xval.addr); |
191 | if (XrmGetResource(xdb, "xmenu.foreground", "*", &type, &xval) == True) |
192 | foreground_color = strdup(xval.addr); |
193 | if (XrmGetResource(xdb, "xmenu.selbackground", "*", &type, &xval) == True) |
194 | selbackground_color = strdup(xval.addr); |
195 | if (XrmGetResource(xdb, "xmenu.selforeground", "*", &type, &xval) == True) |
196 | selforeground_color = strdup(xval.addr); |
197 | if (XrmGetResource(xdb, "xmenu.separator", "*", &type, &xval) == True) |
198 | separator_color = strdup(xval.addr); |
199 | if (XrmGetResource(xdb, "xmenu.border", "*", &type, &xval) == True) |
200 | border_color = strdup(xval.addr); |
201 | if (XrmGetResource(xdb, "xmenu.font", "*", &type, &xval) == True) |
202 | font = strdup(xval.addr); |
203 | |
204 | XrmDestroyDatabase(xdb); |
f644b8bc |
205 | } |
206 | |
a7732690 |
207 | /* get color from color string */ |
dbeb9940 |
208 | static void |
209 | getcolor(const char *s, XftColor *color) |
a7732690 |
210 | { |
dbeb9940 |
211 | if(!XftColorAllocName(dpy, visual, colormap, s, color)) |
a7732690 |
212 | errx(1, "cannot allocate color: %s", s); |
a7732690 |
213 | } |
214 | |
215 | /* init draw context */ |
216 | static void |
217 | setupdc(void) |
218 | { |
219 | /* get color pixels */ |
fd530f3f |
220 | getcolor(background_color, &dc.normal[ColorBG]); |
221 | getcolor(foreground_color, &dc.normal[ColorFG]); |
222 | getcolor(selbackground_color, &dc.selected[ColorBG]); |
223 | getcolor(selforeground_color, &dc.selected[ColorFG]); |
224 | getcolor(separator_color, &dc.separator); |
225 | getcolor(border_color, &dc.border); |
a7732690 |
226 | |
227 | /* try to get font */ |
dbeb9940 |
228 | if ((dc.font = XftFontOpenName(dpy, screen, font)) == NULL) |
a7732690 |
229 | errx(1, "cannot load font"); |
a7732690 |
230 | |
fd530f3f |
231 | /* create common GC */ |
a7732690 |
232 | dc.gc = XCreateGC(dpy, rootwin, 0, NULL); |
a7732690 |
233 | } |
234 | |
235 | /* init menu geometry values */ |
236 | static void |
237 | setupgeom(void) |
238 | { |
fd530f3f |
239 | geom.itemb = padding_pixels; |
240 | geom.itemh = dc.font->height + padding_pixels * 2; |
241 | geom.itemw = width_pixels; |
242 | geom.border = border_pixels; |
243 | geom.separator = separator_pixels; |
a7732690 |
244 | } |
245 | |
a7732690 |
246 | /* allocate an item */ |
247 | static struct Item * |
a80fee22 |
248 | allocitem(const char *label, const char *output) |
a7732690 |
249 | { |
250 | struct Item *item; |
251 | |
252 | if ((item = malloc(sizeof *item)) == NULL) |
253 | err(1, "malloc"); |
7fbd1c5e |
254 | if (*label == '\0') { |
255 | item->label = NULL; |
256 | item->output = NULL; |
257 | } else { |
258 | if ((item->label = strdup(label)) == NULL) |
259 | err(1, "strdup"); |
260 | if ((item->output = strdup(output)) == NULL) |
261 | err(1, "strdup"); |
262 | } |
a80fee22 |
263 | item->y = 0; |
7fbd1c5e |
264 | item->h = item->label ? geom.itemh : geom.separator; |
f1583285 |
265 | if (item->label == NULL) |
266 | item->labellen = 0; |
267 | else |
268 | item->labellen = strlen(item->label); |
a7732690 |
269 | item->next = NULL; |
270 | item->submenu = NULL; |
271 | |
272 | return item; |
273 | } |
274 | |
275 | /* allocate a menu */ |
276 | static struct Menu * |
277 | allocmenu(struct Menu *parent, struct Item *list, unsigned level) |
278 | { |
279 | XSetWindowAttributes swa; |
280 | struct Menu *menu; |
281 | |
282 | if ((menu = malloc(sizeof *menu)) == NULL) |
283 | err(1, "malloc"); |
284 | menu->parent = parent; |
285 | menu->list = list; |
d888f2ca |
286 | menu->caller = NULL; |
a7732690 |
287 | menu->selected = NULL; |
a7732690 |
288 | menu->w = geom.itemw; |
a80fee22 |
289 | menu->h = 0; /* calculated by calcmenu() */ |
290 | menu->x = 0; /* calculated by calcmenu() */ |
291 | menu->y = 0; /* calculated by calcmenu() */ |
a7732690 |
292 | menu->level = level; |
a7732690 |
293 | |
27443900 |
294 | swa.override_redirect = True; |
fd530f3f |
295 | swa.background_pixel = dc.normal[ColorBG].pixel; |
296 | swa.border_pixel = dc.border.pixel; |
297 | swa.save_under = True; /* pop-up windows should save_under*/ |
a7732690 |
298 | swa.event_mask = ExposureMask | KeyPressMask | ButtonPressMask | ButtonReleaseMask |
f15fc339 |
299 | | PointerMotionMask | LeaveWindowMask; |
a7732690 |
300 | menu->win = XCreateWindow(dpy, rootwin, 0, 0, geom.itemw, geom.itemh, geom.border, |
301 | CopyFromParent, CopyFromParent, CopyFromParent, |
fd530f3f |
302 | CWOverrideRedirect | CWBackPixel | |
303 | CWBorderPixel | CWEventMask | CWSaveUnder, |
a7732690 |
304 | &swa); |
305 | |
306 | return menu; |
307 | } |
308 | |
309 | /* create menus and items from the stdin */ |
310 | static void |
311 | parsestdin(void) |
312 | { |
313 | char *s, buf[BUFSIZ]; |
314 | char *label, *output; |
315 | unsigned level = 0; |
316 | unsigned i; |
a80fee22 |
317 | struct Item *curritem = NULL; /* item currently being read */ |
318 | struct Menu *prevmenu = NULL; /* menu the previous item was added to */ |
319 | struct Item *item; /* dummy item for for loops */ |
320 | struct Menu *menu; /* dummy menu for for loops */ |
a7732690 |
321 | size_t count = 0; /* number of items in the current menu */ |
322 | |
323 | while (fgets(buf, BUFSIZ, stdin) != NULL) { |
324 | level = 0; |
325 | s = buf; |
326 | |
327 | while (*s == '\t') { |
328 | level++; |
329 | s++; |
330 | } |
331 | |
332 | label = output = s; |
333 | |
334 | while (*s != '\0' && *s != '\t' && *s != '\n') |
335 | s++; |
336 | |
337 | while (*s == '\t') |
338 | *s++ = '\0'; |
339 | |
340 | if (*s != '\0' && *s != '\n') |
341 | output = s; |
342 | |
343 | while (*s != '\0' && *s != '\n') |
344 | s++; |
345 | |
346 | if (*s == '\n') |
347 | *s = '\0'; |
348 | |
a80fee22 |
349 | curritem = allocitem(label, output); |
a7732690 |
350 | |
351 | if (prevmenu == NULL) { /* there is no menu yet */ |
a80fee22 |
352 | menu = allocmenu(NULL, curritem, level); |
a7732690 |
353 | rootmenu = menu; |
354 | prevmenu = menu; |
355 | count = 1; |
858338d9 |
356 | curritem->prev = NULL; |
357 | curritem->next = NULL; |
a7732690 |
358 | } else if (level < prevmenu->level) { /* item is continuation of a parent menu*/ |
359 | for (menu = prevmenu, i = level; |
360 | menu != NULL && i < prevmenu->level; |
361 | menu = menu->parent, i++) |
362 | ; |
363 | |
364 | if (menu == NULL) |
365 | errx(1, "reached NULL menu"); |
366 | |
a80fee22 |
367 | for (item = menu->list; item->next != NULL; item = item->next) |
a7732690 |
368 | ; |
369 | |
a80fee22 |
370 | item->next = curritem; |
858338d9 |
371 | |
372 | curritem->prev = item; |
373 | curritem->next = NULL; |
374 | |
a7732690 |
375 | prevmenu = menu; |
376 | } else if (level == prevmenu->level) { /* item is a continuation of current menu */ |
a80fee22 |
377 | for (item = prevmenu->list; item->next != NULL; item = item->next) |
a7732690 |
378 | ; |
a80fee22 |
379 | item->next = curritem; |
858338d9 |
380 | |
381 | curritem->prev = item; |
382 | curritem->next = NULL; |
383 | |
a7732690 |
384 | } else if (level > prevmenu->level) { /* item begins a new menu */ |
a80fee22 |
385 | menu = allocmenu(prevmenu, curritem, level); |
a7732690 |
386 | |
a80fee22 |
387 | for (item = prevmenu->list; item->next != NULL; item = item->next) |
a7732690 |
388 | ; |
389 | |
a80fee22 |
390 | item->submenu = menu; |
d888f2ca |
391 | menu->caller = item; |
a7732690 |
392 | |
858338d9 |
393 | curritem->prev = NULL; |
394 | curritem->next = NULL; |
395 | |
a7732690 |
396 | prevmenu = menu; |
397 | } |
a80fee22 |
398 | count++; |
a7732690 |
399 | } |
400 | } |
401 | |
402 | /* calculate screen geometry */ |
403 | static void |
404 | calcscreengeom(void) |
405 | { |
406 | Window w1, w2; /* unused variables */ |
407 | int a, b; /* unused variables */ |
408 | unsigned mask; /* unused variable */ |
409 | |
a80fee22 |
410 | XQueryPointer(dpy, rootwin, &w1, &w2, &screengeom.cursx, &screengeom.cursy, &a, &b, &mask); |
411 | screengeom.screenw = DisplayWidth(dpy, screen); |
412 | screengeom.screenh = DisplayHeight(dpy, screen); |
a7732690 |
413 | } |
414 | |
21a9aaec |
415 | /* recursivelly calculate menu geometry and set window hints */ |
a7732690 |
416 | static void |
417 | calcmenu(struct Menu *menu) |
418 | { |
d2435fcd |
419 | static XClassHint classh = {PROGNAME, PROGNAME}; |
a7732690 |
420 | XWindowChanges changes; |
09c13122 |
421 | XSizeHints sizeh; |
dbeb9940 |
422 | XGlyphInfo ext; |
a80fee22 |
423 | struct Item *item; |
f1583285 |
424 | int labelwidth; |
a7732690 |
425 | |
f1583285 |
426 | /* calculate items positions and menu width and height */ |
427 | menu->w = geom.itemw; |
a80fee22 |
428 | for (item = menu->list; item != NULL; item = item->next) { |
429 | item->y = menu->h; |
7fbd1c5e |
430 | if (item->label == NULL) /* height for separator item */ |
a80fee22 |
431 | menu->h += geom.separator; |
432 | else |
433 | menu->h += geom.itemh; |
f1583285 |
434 | |
dbeb9940 |
435 | XftTextExtentsUtf8(dpy, dc.font, (XftChar8 *)item->label, |
436 | item->labellen, &ext); |
437 | labelwidth = ext.xOff + dc.font->height * 2; |
f1583285 |
438 | menu->w = MAX(menu->w, labelwidth); |
a80fee22 |
439 | } |
a7732690 |
440 | |
441 | /* calculate menu's x and y positions */ |
442 | if (menu->parent == NULL) { /* if root menu, calculate in respect to cursor */ |
a80fee22 |
443 | if (screengeom.screenw - screengeom.cursx >= menu->w) |
444 | menu->x = screengeom.cursx; |
445 | else if (screengeom.cursx > menu->w) |
446 | menu->x = screengeom.cursx - menu->w; |
447 | |
448 | if (screengeom.screenh - screengeom.cursy >= menu->h) |
449 | menu->y = screengeom.cursy; |
450 | else if (screengeom.screenh > menu->h) |
451 | menu->y = screengeom.screenh - menu->h; |
a7732690 |
452 | } else { /* else, calculate in respect to parent menu */ |
f644b8bc |
453 | if (screengeom.screenw - (menu->parent->x + menu->parent->w + geom.border) >= menu->w) |
454 | menu->x = menu->parent->x + menu->parent->w + geom.border; |
455 | else if (menu->parent->x > menu->w + geom.border) |
456 | menu->x = menu->parent->x - menu->w - geom.border; |
a7732690 |
457 | |
8455c369 |
458 | if (screengeom.screenh - (menu->caller->y + menu->parent->y) > menu->h) |
459 | menu->y = menu->caller->y + menu->parent->y; |
a80fee22 |
460 | else if (screengeom.screenh - menu->parent->y > menu->h) |
a7732690 |
461 | menu->y = menu->parent->y; |
a80fee22 |
462 | else if (screengeom.screenh > menu->h) |
463 | menu->y = screengeom.screenh - menu->h; |
a7732690 |
464 | } |
465 | |
466 | /* update menu geometry */ |
467 | changes.height = menu->h; |
f1583285 |
468 | changes.width = menu->w; |
a7732690 |
469 | changes.x = menu->x; |
470 | changes.y = menu->y; |
f1583285 |
471 | XConfigureWindow(dpy, menu->win, CWWidth | CWHeight | CWX | CWY, &changes); |
a7732690 |
472 | |
d2435fcd |
473 | /* set window manager hints */ |
09c13122 |
474 | sizeh.flags = PMaxSize | PMinSize; |
475 | sizeh.min_width = sizeh.max_width = menu->w; |
476 | sizeh.min_height = sizeh.max_height = menu->h; |
0c1a7864 |
477 | XSetWMProperties(dpy, menu->win, NULL, NULL, NULL, 0, &sizeh, |
d2435fcd |
478 | NULL, &classh); |
09c13122 |
479 | |
dbeb9940 |
480 | /* create pixmap and XftDraw */ |
f15fc339 |
481 | menu->pixmap = XCreatePixmap(dpy, menu->win, menu->w, menu->h, |
482 | DefaultDepth(dpy, screen)); |
dbeb9940 |
483 | menu->draw = XftDrawCreate(dpy, menu->pixmap, visual, colormap); |
f15fc339 |
484 | |
a80fee22 |
485 | /* calculate positions of submenus */ |
a7732690 |
486 | for (item = menu->list; item != NULL; item = item->next) { |
487 | if (item->submenu != NULL) |
488 | calcmenu(item->submenu); |
489 | } |
490 | } |
491 | |
85003546 |
492 | /* try to grab pointer, we may have to wait for another process to ungrab */ |
493 | static void |
494 | grabpointer(void) |
495 | { |
496 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000 }; |
497 | int i; |
498 | |
499 | for (i = 0; i < 1000; i++) { |
500 | if (XGrabPointer(dpy, rootwin, True, ButtonPressMask, |
501 | GrabModeAsync, GrabModeAsync, None, |
502 | None, CurrentTime) == GrabSuccess) |
503 | return; |
504 | nanosleep(&ts, NULL); |
505 | } |
506 | errx(1, "cannot grab keyboard"); |
507 | } |
508 | |
509 | /* try to grab keyboard, we may have to wait for another process to ungrab */ |
510 | static void |
511 | grabkeyboard(void) |
512 | { |
513 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 1000000 }; |
514 | int i; |
515 | |
516 | for (i = 0; i < 1000; i++) { |
517 | if (XGrabKeyboard(dpy, rootwin, True, GrabModeAsync, |
518 | GrabModeAsync, CurrentTime) == GrabSuccess) |
519 | return; |
520 | nanosleep(&ts, NULL); |
521 | } |
522 | errx(1, "cannot grab keyboard"); |
523 | } |
524 | |
0c1a7864 |
525 | /* get menu of given window */ |
526 | static struct Menu * |
527 | getmenu(Window win) |
a7732690 |
528 | { |
0c1a7864 |
529 | struct Menu *menu; |
a7732690 |
530 | |
0c1a7864 |
531 | for (menu = currmenu; menu != NULL; menu = menu->parent) |
532 | if (menu->win == win) |
533 | return menu; |
a7732690 |
534 | |
0c1a7864 |
535 | return NULL; |
536 | } |
537 | |
538 | /* get item of given menu and position */ |
539 | static struct Item * |
540 | getitem(struct Menu *menu, int y) |
541 | { |
542 | struct Item *item; |
a7732690 |
543 | |
0c1a7864 |
544 | if (menu == NULL) |
545 | return NULL; |
546 | |
547 | for (item = menu->list; item != NULL; item = item->next) |
548 | if (y >= item->y && y <= item->y + item->h) |
549 | return item; |
550 | |
551 | return NULL; |
a7732690 |
552 | } |
553 | |
554 | /* set currentmenu to menu, umap previous menus and map current menu and its parents */ |
555 | static void |
556 | setcurrmenu(struct Menu *currmenu_new) |
557 | { |
d8a7caf2 |
558 | struct Menu *menu, *menu_; |
d888f2ca |
559 | struct Item *item; |
d8a7caf2 |
560 | struct Menu *lcamenu; /* lowest common ancestor menu */ |
561 | unsigned minlevel; /* level of the closest to root menu */ |
562 | unsigned maxlevel; /* level of the closest to root menu */ |
a7732690 |
563 | |
27443900 |
564 | /* do not update currmenu to itself */ |
a7732690 |
565 | if (currmenu_new == currmenu) |
566 | return; |
567 | |
27443900 |
568 | /* if there was no currmenu, skip calculations */ |
569 | if (currmenu == NULL) { |
570 | currmenu = currmenu_new; |
fd530f3f |
571 | XMapWindow(dpy, currmenu->win); |
27443900 |
572 | return; |
573 | } |
574 | |
d8a7caf2 |
575 | /* find lowest common ancestor menu */ |
576 | lcamenu = rootmenu; |
27443900 |
577 | minlevel = MIN(currmenu_new->level, currmenu->level); |
578 | maxlevel = MAX(currmenu_new->level, currmenu->level); |
579 | if (currmenu_new->level == maxlevel) { |
580 | menu = currmenu_new; |
581 | menu_ = currmenu; |
582 | } else { |
583 | menu = currmenu; |
584 | menu_ = currmenu_new; |
585 | } |
586 | while (menu->level > minlevel) |
587 | menu = menu->parent; |
588 | while (menu != menu_) { |
589 | menu = menu->parent; |
590 | menu_ = menu_->parent; |
d8a7caf2 |
591 | } |
27443900 |
592 | lcamenu = menu; |
d8a7caf2 |
593 | |
873c080c |
594 | /* unmap menus from currmenu (inclusive) until lcamenu (exclusive) */ |
d8a7caf2 |
595 | for (menu = currmenu; menu != lcamenu; menu = menu->parent) { |
8455c369 |
596 | menu->selected = NULL; |
a7732690 |
597 | XUnmapWindow(dpy, menu->win); |
598 | } |
599 | |
600 | currmenu = currmenu_new; |
601 | |
873c080c |
602 | /* map menus from currmenu (inclusive) until lcamenu (exclusive) */ |
d888f2ca |
603 | item = NULL; |
d8a7caf2 |
604 | for (menu = currmenu; menu != lcamenu; menu = menu->parent) { |
a7732690 |
605 | XMapWindow(dpy, menu->win); |
fd530f3f |
606 | } |
607 | } |
608 | |
609 | /* draw separator item */ |
610 | static void |
611 | drawseparator(struct Menu *menu, struct Item *item) |
612 | { |
613 | int linex, liney, linew; |
614 | |
615 | linex = dc.font->height; |
616 | liney = item->y + item->h/2; |
617 | linew = menu->w - dc.font->height; |
618 | |
619 | XSetForeground(dpy, dc.gc, dc.separator.pixel); |
620 | XDrawLine(dpy, menu->pixmap, dc.gc, linex, liney, linew, liney); |
621 | } |
622 | |
623 | /* draw regular item */ |
624 | static void |
625 | drawitem(struct Menu *menu, struct Item *item, XftColor *color) |
626 | { |
627 | int x, y; |
628 | |
629 | x = 0 + dc.font->height; |
630 | y = item->y + dc.font->height + geom.itemb / 2; |
631 | XSetForeground(dpy, dc.gc, color[ColorFG].pixel); |
632 | XftDrawStringUtf8(menu->draw, &color[ColorFG], dc.font, |
633 | x, y, item->label, item->labellen); |
634 | |
635 | /* draw triangle, if item contains a submenu */ |
636 | if (item->submenu != NULL) { |
637 | x = menu->w - dc.font->height + geom.itemb - 1; |
638 | y = item->y + geom.itemh/2 - triangle_height/2 - 1; |
639 | |
640 | XPoint triangle[] = { |
641 | {x, y}, |
642 | {x + triangle_width, y + triangle_height/2}, |
643 | {x, y + triangle_height}, |
644 | {x, y} |
645 | }; |
646 | |
647 | XFillPolygon(dpy, menu->pixmap, dc.gc, triangle, LEN(triangle), |
648 | Convex, CoordModeOrigin); |
d888f2ca |
649 | } |
a7732690 |
650 | } |
651 | |
652 | /* draw items of the current menu and of its ancestors */ |
653 | static void |
654 | drawmenu(void) |
655 | { |
656 | struct Menu *menu; |
657 | struct Item *item; |
658 | |
659 | for (menu = currmenu; menu != NULL; menu = menu->parent) { |
a7732690 |
660 | for (item = menu->list; item != NULL; item = item->next) { |
dbeb9940 |
661 | XftColor *color; |
a7732690 |
662 | |
663 | /* determine item color */ |
fd530f3f |
664 | if (item == menu->selected && item->label != NULL) |
f644b8bc |
665 | color = dc.selected; |
a7732690 |
666 | else |
f644b8bc |
667 | color = dc.normal; |
668 | |
a7732690 |
669 | /* draw item box */ |
dbeb9940 |
670 | XSetForeground(dpy, dc.gc, color[ColorBG].pixel); |
f15fc339 |
671 | XFillRectangle(dpy, menu->pixmap, dc.gc, 0, item->y, |
f1583285 |
672 | menu->w, item->h); |
7fbd1c5e |
673 | |
fd530f3f |
674 | if (item->label == NULL) /* item is a separator */ |
675 | drawseparator(menu, item); |
676 | else /* item is a regular item */ |
677 | drawitem(menu, item, color); |
a7732690 |
678 | } |
fd530f3f |
679 | |
680 | XCopyArea(dpy, menu->pixmap, menu->win, dc.gc, 0, 0, |
681 | menu->w, menu->h, 0, 0); |
a7732690 |
682 | } |
683 | } |
684 | |
858338d9 |
685 | /* cycle through the items; non-zero direction is next, zero is prev */ |
686 | static struct Item * |
687 | itemcycle(int direction) |
688 | { |
689 | struct Item *item; |
690 | struct Item *lastitem; |
691 | |
692 | item = NULL; |
693 | |
694 | if (direction == ITEMNEXT) { |
695 | if (currmenu->selected == NULL) |
696 | item = currmenu->list; |
697 | else if (currmenu->selected->next != NULL) |
698 | item = currmenu->selected->next; |
699 | |
700 | while (item != NULL && item->label == NULL) |
701 | item = item->next; |
702 | |
703 | if (item == NULL) |
704 | item = currmenu->list; |
705 | } else { |
706 | for (lastitem = currmenu->list; |
707 | lastitem != NULL && lastitem->next != NULL; |
708 | lastitem = lastitem->next) |
709 | ; |
710 | |
711 | if (currmenu->selected == NULL) |
712 | item = lastitem; |
713 | else if (currmenu->selected->prev != NULL) |
714 | item = currmenu->selected->prev; |
715 | |
716 | while (item != NULL && item->label == NULL) |
717 | item = item->prev; |
718 | |
719 | if (item == NULL) |
720 | item = lastitem; |
721 | } |
722 | |
723 | return item; |
724 | } |
725 | |
a7732690 |
726 | /* run event loop */ |
727 | static void |
728 | run(void) |
729 | { |
730 | struct Menu *menu; |
731 | struct Item *item; |
732 | struct Item *previtem = NULL; |
858338d9 |
733 | KeySym ksym; |
a7732690 |
734 | XEvent ev; |
735 | |
fd530f3f |
736 | setcurrmenu(rootmenu); |
737 | |
a7732690 |
738 | while (!XNextEvent(dpy, &ev)) { |
739 | switch(ev.type) { |
740 | case Expose: |
858338d9 |
741 | if (ev.xexpose.count == 0) |
742 | drawmenu(); |
a7732690 |
743 | break; |
744 | case MotionNotify: |
0c1a7864 |
745 | menu = getmenu(ev.xbutton.window); |
746 | item = getitem(menu, ev.xbutton.y); |
fd530f3f |
747 | if (menu == NULL || item == NULL) |
748 | break; |
749 | if (previtem != item) { |
750 | menu->selected = item; |
751 | if (item->submenu != NULL) |
752 | setcurrmenu(item->submenu); |
753 | else |
754 | setcurrmenu(menu); |
755 | previtem = item; |
756 | drawmenu(); |
a7732690 |
757 | } |
a7732690 |
758 | break; |
759 | case ButtonRelease: |
0c1a7864 |
760 | menu = getmenu(ev.xbutton.window); |
761 | item = getitem(menu, ev.xbutton.y); |
fd530f3f |
762 | if (menu == NULL || item == NULL) |
858338d9 |
763 | break; |
fd530f3f |
764 | selectitem: |
765 | if (item->label == NULL) |
766 | break; /* ignore separators */ |
767 | if (item->submenu != NULL) { |
768 | setcurrmenu(item->submenu); |
a7732690 |
769 | } else { |
fd530f3f |
770 | printf("%s\n", item->output); |
08f16589 |
771 | return; |
a7732690 |
772 | } |
fd530f3f |
773 | currmenu->selected = currmenu->list; |
774 | drawmenu(); |
775 | break; |
858338d9 |
776 | case ButtonPress: |
0c1a7864 |
777 | menu = getmenu(ev.xbutton.window); |
778 | if (menu == NULL) |
858338d9 |
779 | return; |
780 | break; |
781 | case KeyPress: |
782 | ksym = XkbKeycodeToKeysym(dpy, ev.xkey.keycode, 0, 0); |
783 | |
0c1a7864 |
784 | /* esc closes xmenu when current menu is the root menu */ |
858338d9 |
785 | if (ksym == XK_Escape && currmenu == rootmenu) |
786 | return; |
787 | |
788 | /* Shift-Tab = ISO_Left_Tab */ |
789 | if (ksym == XK_Tab && (ev.xkey.state & ShiftMask)) |
790 | ksym = XK_ISO_Left_Tab; |
791 | |
792 | /* cycle through menu */ |
793 | item = NULL; |
794 | if (ksym == XK_ISO_Left_Tab || ksym == XK_Up) { |
795 | item = itemcycle(ITEMPREV); |
796 | } else if (ksym == XK_Tab || ksym == XK_Down) { |
797 | item = itemcycle(ITEMNEXT); |
798 | } else if ((ksym == XK_Return || ksym == XK_Right) && |
799 | currmenu->selected != NULL) { |
800 | item = currmenu->selected; |
801 | goto selectitem; |
802 | } else if ((ksym == XK_Escape || ksym == XK_Left) && |
803 | currmenu->parent != NULL) { |
804 | item = currmenu->parent->selected; |
805 | setcurrmenu(currmenu->parent); |
806 | } else |
807 | break; |
808 | currmenu->selected = item; |
809 | drawmenu(); |
a7732690 |
810 | break; |
f15fc339 |
811 | case LeaveNotify: |
fd530f3f |
812 | previtem = NULL; |
f15fc339 |
813 | currmenu->selected = NULL; |
814 | drawmenu(); |
815 | break; |
a7732690 |
816 | } |
817 | } |
818 | } |
819 | |
fd530f3f |
820 | /* recursivelly free pixmaps and destroy windows */ |
f15fc339 |
821 | static void |
822 | freewindow(struct Menu *menu) |
823 | { |
824 | struct Item *item; |
825 | |
826 | for (item = menu->list; item != NULL; item = item->next) |
827 | if (item->submenu != NULL) |
828 | freewindow(item->submenu); |
829 | |
830 | XFreePixmap(dpy, menu->pixmap); |
dbeb9940 |
831 | XftDrawDestroy(menu->draw); |
f15fc339 |
832 | XDestroyWindow(dpy, menu->win); |
833 | } |
834 | |
a7732690 |
835 | /* cleanup and exit */ |
836 | static void |
08f16589 |
837 | cleanup(void) |
a7732690 |
838 | { |
f15fc339 |
839 | freewindow(rootmenu); |
dbeb9940 |
840 | |
841 | XftColorFree(dpy, visual, colormap, &dc.normal[ColorBG]); |
842 | XftColorFree(dpy, visual, colormap, &dc.normal[ColorFG]); |
843 | XftColorFree(dpy, visual, colormap, &dc.selected[ColorBG]); |
844 | XftColorFree(dpy, visual, colormap, &dc.selected[ColorFG]); |
fd530f3f |
845 | XftColorFree(dpy, visual, colormap, &dc.separator); |
846 | XftColorFree(dpy, visual, colormap, &dc.border); |
dbeb9940 |
847 | |
f15fc339 |
848 | XFreeGC(dpy, dc.gc); |
a7732690 |
849 | XCloseDisplay(dpy); |
a7732690 |
850 | } |
851 | |
852 | /* show usage */ |
853 | static void |
854 | usage(void) |
855 | { |
27443900 |
856 | (void)fprintf(stderr, "usage: xmenu title...\n"); |
a7732690 |
857 | exit(1); |
858 | } |