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
13grabbuttons(Client *c, Bool focused) {
14 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
15
16 if(focused) {
17 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
18 GrabModeAsync, GrabModeSync, None, None);
19 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
20 GrabModeAsync, GrabModeSync, None, None);
21 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
22 GrabModeAsync, GrabModeSync, None, None);
23 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
24 GrabModeAsync, GrabModeSync, None, None);
25
26 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
27 GrabModeAsync, GrabModeSync, None, None);
28 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
29 GrabModeAsync, GrabModeSync, None, None);
30 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
31 GrabModeAsync, GrabModeSync, None, None);
32 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
33 GrabModeAsync, GrabModeSync, None, None);
34
35 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
38 GrabModeAsync, GrabModeSync, None, None);
39 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
40 GrabModeAsync, GrabModeSync, None, None);
41 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
42 GrabModeAsync, GrabModeSync, None, None);
43 }
44 else
45 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47}
48
49static Bool
50isprotodel(Client *c) {
51 int i, n;
52 Atom *protocols;
53 Bool ret = False;
54
55 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
56 for(i = 0; !ret && i < n; i++)
57 if(protocols[i] == wmatom[WMDelete])
58 ret = True;
59 XFree(protocols);
60 }
61 return ret;
62}
63
64static void
65setclientstate(Client *c, long state) {
66 long data[] = {state, None};
67 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
68 PropModeReplace, (unsigned char *)data, 2);
69}
70
71static int
72xerrordummy(Display *dsply, XErrorEvent *ee) {
73 return 0;
74}
75
76/* extern */
77
78void
79attach(Client *c) {
80 if(clients)
81 clients->prev = c;
82 c->next = clients;
83 clients = c;
84}
85
86void
87attachstack(Client *c) {
88 c->snext = stack;
89 stack = c;
90}
91
92void
93configure(Client *c) {
94 XConfigureEvent ce;
95
96 ce.type = ConfigureNotify;
97 ce.display = dpy;
98 ce.event = c->win;
99 ce.window = c->win;
100 ce.x = c->x;
101 ce.y = c->y;
102 ce.width = c->w;
103 ce.height = c->h;
104 ce.border_width = c->border;
105 ce.above = None;
106 ce.override_redirect = False;
107 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
108}
109
110void
111detach(Client *c) {
112 if(c->prev)
113 c->prev->next = c->next;
114 if(c->next)
115 c->next->prev = c->prev;
116 if(c == clients)
117 clients = c->next;
118 c->next = c->prev = NULL;
119}
120
121void
122detachstack(Client *c) {
123 Client **tc;
124 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
125 *tc = c->snext;
126}
127
128void
129focus(Client *c) {
130 if(c && !isvisible(c))
131 return;
132 if(sel && sel != c) {
133 grabbuttons(sel, False);
134 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
135 }
136 if(c) {
137 detachstack(c);
138 attachstack(c);
139 grabbuttons(c, True);
140 }
141 sel = c;
142 drawstatus();
143 if(!selscreen)
144 return;
145 if(c) {
146 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
147 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
148 }
149 else
150 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
151}
152
153void
154focusnext(Arg *arg) {
155 Client *c;
156
157 if(!sel)
158 return;
159 for(c = sel->next; c && !isvisible(c); c = c->next);
160 if(!c)
161 for(c = clients; c && !isvisible(c); c = c->next);
162 if(c) {
163 focus(c);
164 restack();
165 }
166}
167
168void
169focusprev(Arg *arg) {
170 Client *c;
171
172 if(!sel)
173 return;
174 for(c = sel->prev; c && !isvisible(c); c = c->prev);
175 if(!c) {
176 for(c = clients; c && c->next; c = c->next);
177 for(; c && !isvisible(c); c = c->prev);
178 }
179 if(c) {
180 focus(c);
181 restack();
182 }
183}
184
185Client *
186getclient(Window w) {
187 Client *c;
188
189 for(c = clients; c; c = c->next)
190 if(c->win == w)
191 return c;
192 return NULL;
193}
194
195void
196killclient(Arg *arg) {
197 if(!sel)
198 return;
199 if(isprotodel(sel))
200 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
201 else
202 XKillClient(dpy, sel->win);
203}
204
205void
206manage(Window w, XWindowAttributes *wa) {
207 Client *c, *t;
208 Window trans;
209 XWindowChanges wc;
210
211 c = emallocz(sizeof(Client));
212 c->tags = emallocz(ntags * sizeof(Bool));
213 c->win = w;
214 c->x = wa->x;
215 c->y = wa->y;
216 c->w = wa->width;
217 c->h = wa->height;
218 if(c->w == sw && c->h == sh) {
219 c->border = 0;
220 c->x = sx;
221 c->y = sy;
222 }
223 else {
224 c->border = BORDERPX;
225 if(c->x + c->w + 2 * c->border > wax + waw)
226 c->x = wax + waw - c->w - 2 * c->border;
227 if(c->y + c->h + 2 * c->border > way + wah)
228 c->y = way + wah - c->h - 2 * c->border;
229 if(c->x < wax)
230 c->x = wax;
231 if(c->y < way)
232 c->y = way;
233 }
234 updatesizehints(c);
235 XSelectInput(dpy, c->win,
236 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
237 XGetTransientForHint(dpy, c->win, &trans);
238 grabbuttons(c, False);
239 wc.border_width = c->border;
240 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc);
241 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
242 configure(c); /* propagates border_width, if size doesn't change */
243 updatetitle(c);
244 t = getclient(trans);
245 settags(c, t);
246 if(!c->isfloat)
247 c->isfloat = (t != 0) || c->isfixed;
248 attach(c);
249 attachstack(c);
250 c->isbanned = True;
251 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
252 XMapWindow(dpy, c->win);
253 setclientstate(c, NormalState);
254 if(isvisible(c))
255 focus(c);
256 arrange();
257}
258
259void
260resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
261 float actual, dx, dy, max, min;
262 XWindowChanges wc;
263
264 if(w <= 0 || h <= 0)
265 return;
266 if(sizehints) {
267 if(c->minw && w < c->minw)
268 w = c->minw;
269 if(c->minh && h < c->minh)
270 h = c->minh;
271 if(c->maxw && w > c->maxw)
272 w = c->maxw;
273 if(c->maxh && h > c->maxh)
274 h = c->maxh;
275 /* inspired by algorithm from fluxbox */
276 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
277 dx = (float)(w - c->basew);
278 dy = (float)(h - c->baseh);
279 min = (float)(c->minax) / (float)(c->minay);
280 max = (float)(c->maxax) / (float)(c->maxay);
281 actual = dx / dy;
282 if(max > 0 && min > 0 && actual > 0) {
283 if(actual < min) {
284 dy = (dx * min + dy) / (min * min + 1);
285 dx = dy * min;
286 w = (int)dx + c->basew;
287 h = (int)dy + c->baseh;
288 }
289 else if(actual > max) {
290 dy = (dx * min + dy) / (max * max + 1);
291 dx = dy * min;
292 w = (int)dx + c->basew;
293 h = (int)dy + c->baseh;
294 }
295 }
296 }
297 if(c->incw)
298 w -= (w - c->basew) % c->incw;
299 if(c->inch)
300 h -= (h - c->baseh) % c->inch;
301 }
302 if(w == sw && h == sh)
303 c->border = 0;
304 else
305 c->border = BORDERPX;
306 /* offscreen appearance fixes */
307 if(x > sw)
308 x = sw - w - 2 * c->border;
309 if(y > sh)
310 y = sh - h - 2 * c->border;
311 if(x + w + 2 * c->border < sx)
312 x = sx;
313 if(y + h + 2 * c->border < sy)
314 y = sy;
315 if(c->x != x || c->y != y || c->w != w || c->h != h) {
316 c->x = wc.x = x;
317 c->y = wc.y = y;
318 c->w = wc.width = w;
319 c->h = wc.height = h;
320 wc.border_width = c->border;
321 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
322 configure(c);
323 XSync(dpy, False);
324 }
325}
326
327void
328updatesizehints(Client *c) {
329 long msize;
330 XSizeHints size;
331
332 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
333 size.flags = PSize;
334 c->flags = size.flags;
335 if(c->flags & PBaseSize) {
336 c->basew = size.base_width;
337 c->baseh = size.base_height;
338 }
339 else
340 c->basew = c->baseh = 0;
341 if(c->flags & PResizeInc) {
342 c->incw = size.width_inc;
343 c->inch = size.height_inc;
344 }
345 else
346 c->incw = c->inch = 0;
347 if(c->flags & PMaxSize) {
348 c->maxw = size.max_width;
349 c->maxh = size.max_height;
350 }
351 else
352 c->maxw = c->maxh = 0;
353 if(c->flags & PMinSize) {
354 c->minw = size.min_width;
355 c->minh = size.min_height;
356 }
357 else
358 c->minw = c->minh = 0;
359 if(c->flags & PAspect) {
360 c->minax = size.min_aspect.x;
361 c->minay = size.min_aspect.y;
362 c->maxax = size.max_aspect.x;
363 c->maxay = size.max_aspect.y;
364 }
365 else
366 c->minax = c->minay = c->maxax = c->maxay = 0;
367 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
368 && c->maxw == c->minw && c->maxh == c->minh);
369}
370
371void
372updatetitle(Client *c) {
373 char **list = NULL;
374 int n;
375 XTextProperty name;
376
377 name.nitems = 0;
378 c->name[0] = 0;
379 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
380 if(!name.nitems)
381 XGetWMName(dpy, c->win, &name);
382 if(!name.nitems)
383 return;
384 if(name.encoding == XA_STRING)
385 strncpy(c->name, (char *)name.value, sizeof c->name);
386 else {
387 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
388 && n > 0 && *list)
389 {
390 strncpy(c->name, *list, sizeof c->name);
391 XFreeStringList(list);
392 }
393 }
394 XFree(name.value);
395}
396
397void
398unmanage(Client *c) {
399 Client *nc;
400
401 /* The server grab construct avoids race conditions. */
402 XGrabServer(dpy);
403 XSetErrorHandler(xerrordummy);
404 detach(c);
405 detachstack(c);
406 if(sel == c) {
407 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
408 focus(nc);
409 }
410 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
411 setclientstate(c, WithdrawnState);
412 free(c->tags);
413 free(c);
414 XSync(dpy, False);
415 XSetErrorHandler(xerror);
416 XUngrabServer(dpy);
417 arrange();
418}