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view client.c @ 16:cb5813c117e2

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author paulo
date Mon, 09 Apr 2018 20:13:53 -0600
parents 0968b3739b8d
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1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
4 #include "dwm.h"
5 #include <stdio.h>
6 #include <stdlib.h>
7 #include <string.h>
8 #include <X11/Xatom.h>
9 #include <X11/Xutil.h>
10
11 /* static */
12
13 static void
14 attachstack(Client *c) {
15 c->snext = stack;
16 stack = c;
17 }
18
19 static void
20 detachstack(Client *c) {
21 Client **tc;
22
23 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
24 *tc = c->snext;
25 }
26
27 static void
28 grabbuttons(Client *c, Bool focused) {
29 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
30
31 if(focused) {
32 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
33 GrabModeAsync, GrabModeSync, None, None);
34 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
35 GrabModeAsync, GrabModeSync, None, None);
36 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
37 GrabModeAsync, GrabModeSync, None, None);
38 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
39 GrabModeAsync, GrabModeSync, None, None);
40
41 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
42 GrabModeAsync, GrabModeSync, None, None);
43 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
44 GrabModeAsync, GrabModeSync, None, None);
45 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
48 GrabModeAsync, GrabModeSync, None, None);
49
50 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
51 GrabModeAsync, GrabModeSync, None, None);
52 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
53 GrabModeAsync, GrabModeSync, None, None);
54 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
55 GrabModeAsync, GrabModeSync, None, None);
56 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
57 GrabModeAsync, GrabModeSync, None, None);
58 }
59 else
60 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
61 GrabModeAsync, GrabModeSync, None, None);
62 }
63
64 static Bool
65 isprotodel(Client *c) {
66 int i, n;
67 Atom *protocols;
68 Bool ret = False;
69
70 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
71 for(i = 0; !ret && i < n; i++)
72 if(protocols[i] == wmatom[WMDelete])
73 ret = True;
74 XFree(protocols);
75 }
76 return ret;
77 }
78
79 static void
80 setclientstate(Client *c, long state) {
81 long data[] = {state, None};
82
83 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
84 PropModeReplace, (unsigned char *)data, 2);
85 }
86
87 static void
88 togglemax(Client *c) {
89 XEvent ev;
90
91 if(c->isfixed)
92 return;
93 if((c->ismax = !c->ismax)) {
94 c->rx = c->x;
95 c->ry = c->y;
96 c->rw = c->w;
97 c->rh = c->h;
98 resize(c, wax, way, waw - 2 * BORDERPX, wah - 2 * BORDERPX, True);
99 }
100 else
101 resize(c, c->rx, c->ry, c->rw, c->rh, True);
102 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
103 }
104
105 static int
106 xerrordummy(Display *dsply, XErrorEvent *ee) {
107 return 0;
108 }
109
110 /* extern */
111
112 void
113 attach(Client *c) {
114 if(clients)
115 clients->prev = c;
116 c->next = clients;
117 clients = c;
118 }
119
120 void
121 configure(Client *c) {
122 XConfigureEvent ce;
123
124 ce.type = ConfigureNotify;
125 ce.display = dpy;
126 ce.event = c->win;
127 ce.window = c->win;
128 ce.x = c->x;
129 ce.y = c->y;
130 ce.width = c->w;
131 ce.height = c->h;
132 ce.border_width = c->border;
133 ce.above = None;
134 ce.override_redirect = False;
135 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
136 }
137
138 void
139 detach(Client *c) {
140 if(c->prev)
141 c->prev->next = c->next;
142 if(c->next)
143 c->next->prev = c->prev;
144 if(c == clients)
145 clients = c->next;
146 c->next = c->prev = NULL;
147 }
148
149 void
150 focus(Client *c) {
151 if(c && !isvisible(c))
152 return;
153 if(sel && sel != c) {
154 grabbuttons(sel, False);
155 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
156 }
157 if(c) {
158 detachstack(c);
159 attachstack(c);
160 grabbuttons(c, True);
161 }
162 sel = c;
163 drawstatus();
164 if(!selscreen)
165 return;
166 if(c) {
167 XSetWindowBorder(dpy, c->win, (getkeymode() == COMMANDMODE) ? dc.inv[ColBorder] : dc.sel[ColBorder]);
168 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
169 }
170 else
171 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
172 }
173
174 void
175 killclient(Arg *arg) {
176 if(!sel)
177 return;
178 if(isprotodel(sel))
179 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
180 else
181 XKillClient(dpy, sel->win);
182 }
183
184 void
185 manage(Window w, XWindowAttributes *wa) {
186 Client *c, *t;
187 Window trans;
188 XWindowChanges wc;
189
190 c = emallocz(sizeof(Client));
191 c->tags = emallocz(ntags * sizeof(Bool));
192 c->win = w;
193 c->x = wa->x;
194 c->y = wa->y;
195 c->w = wa->width;
196 c->h = wa->height;
197 if(c->w == sw && c->h == sh) {
198 c->border = 0;
199 c->x = sx;
200 c->y = sy;
201 }
202 else {
203 c->border = BORDERPX;
204 if(c->x > wax + waw && c-> w < waw)
205 c->x = wax + waw - c->w - 2 * c->border;
206 if(c->y > way + wah && c-> h < wah)
207 c->y = way + wah - c->h - 2 * c->border;
208 if(c->x < wax && c->w < waw)
209 c->x = wax;
210 if(c->y < way && c->h < wah)
211 c->y = way;
212 }
213 XSelectInput(dpy, w,
214 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
215 XGetTransientForHint(dpy, w, &trans);
216 grabbuttons(c, False);
217 wc.border_width = c->border;
218 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
219 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
220 configure(c); /* propagates border_width, if size doesn't change */
221 updatetitle(c);
222 for(t = clients; t && t->win != trans; t = t->next);
223 settags(c, t);
224 if(!c->isversatile)
225 c->isversatile = (t != NULL) || c->isfixed;
226 attach(c);
227 attachstack(c);
228 c->isbanned = True;
229 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
230 XMapWindow(dpy, w);
231 setclientstate(c, NormalState);
232 if(isvisible(c))
233 focus(c);
234 updatesizehints(c);
235 lt->arrange();
236 }
237
238 void
239 resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
240 float actual, dx, dy, max, min;
241 XWindowChanges wc;
242
243 if(w <= 0 || h <= 0)
244 return;
245 if(sizehints) {
246 if(c->minw && w < c->minw)
247 w = c->minw;
248 if(c->minh && h < c->minh)
249 h = c->minh;
250 if(c->maxw && w > c->maxw)
251 w = c->maxw;
252 if(c->maxh && h > c->maxh)
253 h = c->maxh;
254 /* inspired by algorithm from fluxbox */
255 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
256 dx = (float)(w - c->basew);
257 dy = (float)(h - c->baseh);
258 min = (float)(c->minax) / (float)(c->minay);
259 max = (float)(c->maxax) / (float)(c->maxay);
260 actual = dx / dy;
261 if(max > 0 && min > 0 && actual > 0) {
262 if(actual < min) {
263 dy = (dx * min + dy) / (min * min + 1);
264 dx = dy * min;
265 w = (int)dx + c->basew;
266 h = (int)dy + c->baseh;
267 }
268 else if(actual > max) {
269 dy = (dx * min + dy) / (max * max + 1);
270 dx = dy * min;
271 w = (int)dx + c->basew;
272 h = (int)dy + c->baseh;
273 }
274 }
275 }
276 if(c->incw)
277 w -= (w - c->basew) % c->incw;
278 if(c->inch)
279 h -= (h - c->baseh) % c->inch;
280 }
281 if(w == sw && h == sh)
282 c->border = 0;
283 else
284 c->border = BORDERPX;
285 /* offscreen appearance fixes */
286 if(x > sw)
287 x = sw - w - 2 * c->border;
288 if(y > sh)
289 y = sh - h - 2 * c->border;
290 if(x + w + 2 * c->border < sx)
291 x = sx;
292 if(y + h + 2 * c->border < sy)
293 y = sy;
294 /* if(c->x != x || c->y != y || c->w != w || c->h != h) { */
295 c->x = wc.x = x;
296 c->y = wc.y = y;
297 c->w = wc.width = w;
298 c->h = wc.height = h;
299 wc.border_width = c->border;
300 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
301 configure(c);
302 XSync(dpy, False);
303 /* } */
304 }
305
306 void
307 toggleversatile(Arg *arg) {
308 if(!sel || lt->arrange == versatile)
309 return;
310 sel->isversatile = !sel->isversatile;
311 lt->arrange();
312 }
313
314 void
315 updatesizehints(Client *c) {
316 long msize;
317 XSizeHints size;
318
319 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
320 size.flags = PSize;
321 c->flags = size.flags;
322 if(c->flags & PBaseSize) {
323 c->basew = size.base_width;
324 c->baseh = size.base_height;
325 }
326 else
327 c->basew = c->baseh = 0;
328 if(c->flags & PResizeInc) {
329 c->incw = size.width_inc;
330 c->inch = size.height_inc;
331 }
332 else
333 c->incw = c->inch = 0;
334 if(c->flags & PMaxSize) {
335 c->maxw = size.max_width;
336 c->maxh = size.max_height;
337 }
338 else
339 c->maxw = c->maxh = 0;
340 if(c->flags & PMinSize) {
341 c->minw = size.min_width;
342 c->minh = size.min_height;
343 }
344 else
345 c->minw = c->minh = 0;
346 if(c->flags & PAspect) {
347 c->minax = size.min_aspect.x;
348 c->minay = size.min_aspect.y;
349 c->maxax = size.max_aspect.x;
350 c->maxay = size.max_aspect.y;
351 }
352 else
353 c->minax = c->minay = c->maxax = c->maxay = 0;
354 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
355 && c->maxw == c->minw && c->maxh == c->minh);
356 }
357
358 void
359 updatetitle(Client *c) {
360 char **list = NULL;
361 int n;
362 XTextProperty name;
363
364 name.nitems = 0;
365 c->name[0] = 0;
366 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
367 if(!name.nitems)
368 XGetWMName(dpy, c->win, &name);
369 if(!name.nitems)
370 return;
371 if(name.encoding == XA_STRING)
372 strncpy(c->name, (char *)name.value, sizeof c->name);
373 else {
374 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
375 && n > 0 && *list)
376 {
377 strncpy(c->name, *list, sizeof c->name);
378 XFreeStringList(list);
379 }
380 }
381 XFree(name.value);
382 }
383
384 void
385 unmanage(Client *c) {
386 Client *nc;
387
388 /* The server grab construct avoids race conditions. */
389 XGrabServer(dpy);
390 XSetErrorHandler(xerrordummy);
391 detach(c);
392 detachstack(c);
393 if(sel == c) {
394 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
395 focus(nc);
396 }
397 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
398 setclientstate(c, WithdrawnState);
399 free(c->tags);
400 free(c);
401 XSync(dpy, False);
402 XSetErrorHandler(xerror);
403 XUngrabServer(dpy);
404 lt->arrange();
405 }
406
407 void
408 zoom(Arg *arg) {
409 unsigned int n;
410 Client *c;
411
412 if(!sel)
413 return;
414 if(sel->isversatile || (lt->arrange == versatile)) {
415 togglemax(sel);
416 return;
417 }
418 for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
419 n++;
420 if((c = sel) == nexttiled(clients))
421 if(!(c = nexttiled(c->next)))
422 return;
423 detach(c);
424 attach(c);
425 focus(c);
426 lt->arrange();
427 }
428
429 void
430 zoom_insert(Arg *arg) {
431 func_insert(zoom, arg);
432 }
433
434 Client *
435 prevtiled(Client *c) {
436 for(; c && (c->isversatile || !isvisible(c)); c = c->prev);
437 return c;
438 }
439
440 void
441 pushup(Arg *arg) {
442 Client *c;
443
444 if(!sel || sel->isversatile)
445 return;
446 if((c = prevtiled(sel->prev))) {
447 /* attach before c */
448 detach(sel);
449 sel->next = c;
450 sel->prev = c->prev;
451 c->prev = sel;
452 if(sel->prev)
453 sel->prev->next = sel;
454 else
455 clients = sel;
456 } else {
457 /* move to the end */
458 for(c = sel; c->next; c = c->next);
459 detach(sel);
460 sel->prev = c;
461 c->next = sel;
462 }
463 focus(sel);
464 lt->arrange();
465 }
466
467 void
468 pushdown(Arg *arg) {
469 Client *c;
470
471 if(!sel || sel->isversatile)
472 return;
473 if((c = nexttiled(sel->next))) {
474 /* attach after c */
475 detach(sel);
476 sel->prev = c;
477 sel->next = c->next;
478 c->next = sel;
479 if(sel->next)
480 sel->next->prev = sel;
481 } else {
482 /* move to the front */
483 detach(sel);
484 attach(sel);
485 }
486 focus(sel);
487 lt->arrange();
488 }
489
490 void
491 moveresize(Arg *arg) {
492 int x, y, w, h, nx, ny, nw, nh, ox, oy, ow, oh;
493 char xAbs, yAbs, wAbs, hAbs;
494 int mx, my, dx, dy, nmx, nmy;
495 unsigned int dui;
496 Window dummy;
497
498 if (lt->arrange != versatile)
499 if (!sel || !sel->isversatile || !arg)
500 return;
501 if(sscanf(arg->cmd, "%d%c %d%c %d%c %d%c", &x, &xAbs, &y, &yAbs, &w, &wAbs, &h, &hAbs) != 8)
502 return;
503 nx = xAbs == 'X' ? x : sel->x + x;
504 ny = yAbs == 'Y' ? y : sel->y + y;
505 nw = wAbs == 'W' ? w : sel->w + w;
506 nh = hAbs == 'H' ? h : sel->h + h;
507
508 if(xAbs == 'X') {
509 if(nx < wax)
510 nx = wax;
511 else if(nx + nw + 2*BORDERPX > waw)
512 nx = wax + waw - nw - 2*BORDERPX;
513 }
514 if(yAbs == 'Y') {
515 if(ny < way)
516 ny = way;
517 else if(ny + nh + 2*BORDERPX > wah)
518 ny = way + wah - nh - 2*BORDERPX;
519 }
520
521 ox = sel->x;
522 oy = sel->y;
523 ow = sel->w;
524 oh = sel->h;
525
526 Bool xqp = XQueryPointer(dpy, root, &dummy, &dummy, &mx, &my, &dx, &dy, &dui);
527 resize(sel, nx, ny, nw, nh, True);
528 if (xqp && ox <= mx && (ox + ow) >= mx && oy <= my && (oy + oh) >= my)
529 {
530 nmx = mx-ox+sel->w-ow-1 < 0 ? 0 : mx-ox+sel->w-ow-1;
531 nmy = my-oy+sel->h-oh-1 < 0 ? 0 : my-oy+sel->h-oh-1;
532 XWarpPointer(dpy, None, sel->win, 0, 0, 0, 0, nmx, nmy);
533 }
534 }
535