client.c (view raw)
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 <stdlib.h>
6#include <string.h>
7#include <X11/Xatom.h>
8#include <X11/Xutil.h>
9
10/* static */
11
12static void
13attachstack(Client *c) {
14 c->snext = stack;
15 stack = c;
16}
17
18static void
19detachstack(Client *c) {
20 Client **tc;
21
22 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
23 *tc = c->snext;
24}
25
26static void
27grabbuttons(Client *c, Bool focused) {
28 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
29
30 if(focused) {
31 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
32 GrabModeAsync, GrabModeSync, None, None);
33 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
34 GrabModeAsync, GrabModeSync, None, None);
35 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
38 GrabModeAsync, GrabModeSync, None, None);
39
40 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
41 GrabModeAsync, GrabModeSync, None, None);
42 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
43 GrabModeAsync, GrabModeSync, None, None);
44 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
45 GrabModeAsync, GrabModeSync, None, None);
46 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
47 GrabModeAsync, GrabModeSync, None, None);
48
49 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
50 GrabModeAsync, GrabModeSync, None, None);
51 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
52 GrabModeAsync, GrabModeSync, None, None);
53 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
54 GrabModeAsync, GrabModeSync, None, None);
55 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
56 GrabModeAsync, GrabModeSync, None, None);
57 }
58 else
59 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
60 GrabModeAsync, GrabModeSync, None, None);
61}
62
63static Bool
64isprotodel(Client *c) {
65 int i, n;
66 Atom *protocols;
67 Bool ret = False;
68
69 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
70 for(i = 0; !ret && i < n; i++)
71 if(protocols[i] == wmatom[WMDelete])
72 ret = True;
73 XFree(protocols);
74 }
75 return ret;
76}
77
78static void
79setclientstate(Client *c, long state) {
80 long data[] = {state, None};
81
82 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
83 PropModeReplace, (unsigned char *)data, 2);
84}
85
86static void
87togglemax(Client *c) {
88 XEvent ev;
89
90 if(c->isfixed)
91 return;
92 if((c->ismax = !c->ismax)) {
93 c->rx = c->x;
94 c->ry = c->y;
95 c->rw = c->w;
96 c->rh = c->h;
97 resize(c, wax, way, waw - 2 * BORDERPX, wah - 2 * BORDERPX, True);
98 }
99 else
100 resize(c, c->rx, c->ry, c->rw, c->rh, True);
101 while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
102}
103
104static int
105xerrordummy(Display *dsply, XErrorEvent *ee) {
106 return 0;
107}
108
109/* extern */
110
111void
112attach(Client *c) {
113 if(clients)
114 clients->prev = c;
115 c->next = clients;
116 clients = c;
117}
118
119void
120configure(Client *c) {
121 XConfigureEvent ce;
122
123 ce.type = ConfigureNotify;
124 ce.display = dpy;
125 ce.event = c->win;
126 ce.window = c->win;
127 ce.x = c->x;
128 ce.y = c->y;
129 ce.width = c->w;
130 ce.height = c->h;
131 ce.border_width = c->border;
132 ce.above = None;
133 ce.override_redirect = False;
134 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
135}
136
137void
138detach(Client *c) {
139 if(c->prev)
140 c->prev->next = c->next;
141 if(c->next)
142 c->next->prev = c->prev;
143 if(c == clients)
144 clients = c->next;
145 c->next = c->prev = NULL;
146}
147
148void
149focus(Client *c) {
150 if(c && !isvisible(c))
151 return;
152 if(sel && sel != c) {
153 grabbuttons(sel, False);
154 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
155 }
156 if(c) {
157 detachstack(c);
158 attachstack(c);
159 grabbuttons(c, True);
160 }
161 sel = c;
162 drawstatus();
163 if(!selscreen)
164 return;
165 if(c) {
166 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
167 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
168 }
169 else
170 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
171}
172
173void
174killclient(Arg *arg) {
175 if(!sel)
176 return;
177 if(isprotodel(sel))
178 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
179 else
180 XKillClient(dpy, sel->win);
181}
182
183void
184manage(Window w, XWindowAttributes *wa) {
185 Client *c, *t;
186 Window trans;
187 XWindowChanges wc;
188
189 c = emallocz(sizeof(Client));
190 c->tags = emallocz(ntags * sizeof(Bool));
191 c->win = w;
192 c->x = wa->x;
193 c->y = wa->y;
194 c->w = wa->width;
195 c->h = wa->height;
196 if(c->w == sw && c->h == sh) {
197 c->border = 0;
198 c->x = sx;
199 c->y = sy;
200 }
201 else {
202 c->border = BORDERPX;
203 if(c->x + c->w + 2 * c->border > wax + waw)
204 c->x = wax + waw - c->w - 2 * c->border;
205 if(c->y + c->h + 2 * c->border > way + wah)
206 c->y = way + wah - c->h - 2 * c->border;
207 if(c->x < wax)
208 c->x = wax;
209 if(c->y < way)
210 c->y = way;
211 }
212 updatesizehints(c);
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 lt->arrange();
235}
236
237void
238resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
239 float actual, dx, dy, max, min;
240 XWindowChanges wc;
241
242 if(w <= 0 || h <= 0)
243 return;
244 if(sizehints) {
245 if(c->minw && w < c->minw)
246 w = c->minw;
247 if(c->minh && h < c->minh)
248 h = c->minh;
249 if(c->maxw && w > c->maxw)
250 w = c->maxw;
251 if(c->maxh && h > c->maxh)
252 h = c->maxh;
253 /* inspired by algorithm from fluxbox */
254 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
255 dx = (float)(w - c->basew);
256 dy = (float)(h - c->baseh);
257 min = (float)(c->minax) / (float)(c->minay);
258 max = (float)(c->maxax) / (float)(c->maxay);
259 actual = dx / dy;
260 if(max > 0 && min > 0 && actual > 0) {
261 if(actual < min) {
262 dy = (dx * min + dy) / (min * min + 1);
263 dx = dy * min;
264 w = (int)dx + c->basew;
265 h = (int)dy + c->baseh;
266 }
267 else if(actual > max) {
268 dy = (dx * min + dy) / (max * max + 1);
269 dx = dy * min;
270 w = (int)dx + c->basew;
271 h = (int)dy + c->baseh;
272 }
273 }
274 }
275 if(c->incw)
276 w -= (w - c->basew) % c->incw;
277 if(c->inch)
278 h -= (h - c->baseh) % c->inch;
279 }
280 if(w == sw && h == sh)
281 c->border = 0;
282 else
283 c->border = BORDERPX;
284 /* offscreen appearance fixes */
285 if(x > sw)
286 x = sw - w - 2 * c->border;
287 if(y > sh)
288 y = sh - h - 2 * c->border;
289 if(x + w + 2 * c->border < sx)
290 x = sx;
291 if(y + h + 2 * c->border < sy)
292 y = sy;
293 if(c->x != x || c->y != y || c->w != w || c->h != h) {
294 c->x = wc.x = x;
295 c->y = wc.y = y;
296 c->w = wc.width = w;
297 c->h = wc.height = h;
298 wc.border_width = c->border;
299 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
300 configure(c);
301 XSync(dpy, False);
302 }
303}
304
305void
306toggleversatile(Arg *arg) {
307 if(!sel || lt->arrange == versatile)
308 return;
309 sel->isversatile = !sel->isversatile;
310 lt->arrange();
311}
312
313void
314updatesizehints(Client *c) {
315 long msize;
316 XSizeHints size;
317
318 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
319 size.flags = PSize;
320 c->flags = size.flags;
321 if(c->flags & PBaseSize) {
322 c->basew = size.base_width;
323 c->baseh = size.base_height;
324 }
325 else
326 c->basew = c->baseh = 0;
327 if(c->flags & PResizeInc) {
328 c->incw = size.width_inc;
329 c->inch = size.height_inc;
330 }
331 else
332 c->incw = c->inch = 0;
333 if(c->flags & PMaxSize) {
334 c->maxw = size.max_width;
335 c->maxh = size.max_height;
336 }
337 else
338 c->maxw = c->maxh = 0;
339 if(c->flags & PMinSize) {
340 c->minw = size.min_width;
341 c->minh = size.min_height;
342 }
343 else
344 c->minw = c->minh = 0;
345 if(c->flags & PAspect) {
346 c->minax = size.min_aspect.x;
347 c->minay = size.min_aspect.y;
348 c->maxax = size.max_aspect.x;
349 c->maxay = size.max_aspect.y;
350 }
351 else
352 c->minax = c->minay = c->maxax = c->maxay = 0;
353 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
354 && c->maxw == c->minw && c->maxh == c->minh);
355}
356
357void
358updatetitle(Client *c) {
359 char **list = NULL;
360 int n;
361 XTextProperty name;
362
363 name.nitems = 0;
364 c->name[0] = 0;
365 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
366 if(!name.nitems)
367 XGetWMName(dpy, c->win, &name);
368 if(!name.nitems)
369 return;
370 if(name.encoding == XA_STRING)
371 strncpy(c->name, (char *)name.value, sizeof c->name);
372 else {
373 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
374 && n > 0 && *list)
375 {
376 strncpy(c->name, *list, sizeof c->name);
377 XFreeStringList(list);
378 }
379 }
380 XFree(name.value);
381}
382
383void
384unmanage(Client *c) {
385 Client *nc;
386
387 /* The server grab construct avoids race conditions. */
388 XGrabServer(dpy);
389 XSetErrorHandler(xerrordummy);
390 detach(c);
391 detachstack(c);
392 if(sel == c) {
393 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
394 focus(nc);
395 }
396 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
397 setclientstate(c, WithdrawnState);
398 free(c->tags);
399 free(c);
400 XSync(dpy, False);
401 XSetErrorHandler(xerror);
402 XUngrabServer(dpy);
403 lt->arrange();
404}
405
406void
407zoom(Arg *arg) {
408 unsigned int n;
409 Client *c;
410
411 if(!sel)
412 return;
413 if(sel->isversatile || (lt->arrange == versatile)) {
414 togglemax(sel);
415 return;
416 }
417 for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
418 n++;
419 if((c = sel) == nexttiled(clients))
420 if(!(c = nexttiled(c->next)))
421 return;
422 detach(c);
423 attach(c);
424 focus(c);
425 lt->arrange();
426}