client.c (view raw)
1/* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
2 * © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
3 * © 2006-2007 Jukka Salmi <jukka at salmi dot ch>
4 * © 2007 Premysl Hruby <dfenze at gmail dot com>
5 * © 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
6 * See LICENSE file for license details. */
7#include "dwm.h"
8#include <stdlib.h>
9#include <string.h>
10#include <X11/Xatom.h>
11#include <X11/Xutil.h>
12
13/* static */
14
15static void
16attachstack(Client *c) {
17 c->snext = stack;
18 stack = c;
19}
20
21static void
22detachstack(Client *c) {
23 Client **tc;
24
25 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
26 *tc = c->snext;
27}
28
29static void
30grabbuttons(Client *c, Bool focused) {
31 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
32
33 if(focused) {
34 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
35 GrabModeAsync, GrabModeSync, None, None);
36 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
37 GrabModeAsync, GrabModeSync, None, None);
38 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
39 GrabModeAsync, GrabModeSync, None, None);
40 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
41 GrabModeAsync, GrabModeSync, None, None);
42
43 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
44 GrabModeAsync, GrabModeSync, None, None);
45 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
48 GrabModeAsync, GrabModeSync, None, None);
49 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
50 GrabModeAsync, GrabModeSync, None, None);
51
52 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
53 GrabModeAsync, GrabModeSync, None, None);
54 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
55 GrabModeAsync, GrabModeSync, None, None);
56 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
57 GrabModeAsync, GrabModeSync, None, None);
58 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
59 GrabModeAsync, GrabModeSync, None, None);
60 }
61 else
62 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
63 GrabModeAsync, GrabModeSync, None, None);
64}
65
66static Bool
67isprotodel(Client *c) {
68 int i, n;
69 Atom *protocols;
70 Bool ret = False;
71
72 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
73 for(i = 0; !ret && i < n; i++)
74 if(protocols[i] == wmatom[WMDelete])
75 ret = True;
76 XFree(protocols);
77 }
78 return ret;
79}
80
81static void
82setclientstate(Client *c, long state) {
83 long data[] = {state, None};
84
85 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
86 PropModeReplace, (unsigned char *)data, 2);
87}
88
89static int
90xerrordummy(Display *dsply, XErrorEvent *ee) {
91 return 0;
92}
93
94/* extern */
95
96void
97attach(Client *c) {
98 if(clients)
99 clients->prev = c;
100 c->next = clients;
101 clients = c;
102}
103
104void
105configure(Client *c) {
106 XConfigureEvent ce;
107
108 ce.type = ConfigureNotify;
109 ce.display = dpy;
110 ce.event = c->win;
111 ce.window = c->win;
112 ce.x = c->x;
113 ce.y = c->y;
114 ce.width = c->w;
115 ce.height = c->h;
116 ce.border_width = c->border;
117 ce.above = None;
118 ce.override_redirect = False;
119 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
120}
121
122void
123detach(Client *c) {
124 if(c->prev)
125 c->prev->next = c->next;
126 if(c->next)
127 c->next->prev = c->prev;
128 if(c == clients)
129 clients = c->next;
130 c->next = c->prev = NULL;
131}
132
133void
134focus(Client *c) {
135 if((!c && selscreen)|| (c && !isvisible(c)))
136 for(c = stack; c && !isvisible(c); c = c->snext);
137 if(sel && sel != c) {
138 grabbuttons(sel, False);
139 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
140 }
141 if(c) {
142 detachstack(c);
143 attachstack(c);
144 grabbuttons(c, True);
145 }
146 sel = c;
147 drawstatus();
148 if(!selscreen)
149 return;
150 if(c) {
151 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
152 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
153 }
154 else
155 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
156}
157
158void
159killclient(const char *arg) {
160 XEvent ev;
161
162 if(!sel)
163 return;
164 if(isprotodel(sel)) {
165 ev.type = ClientMessage;
166 ev.xclient.window = sel->win;
167 ev.xclient.message_type = wmatom[WMProtocols];
168 ev.xclient.format = 32;
169 ev.xclient.data.l[0] = wmatom[WMDelete];
170 ev.xclient.data.l[1] = CurrentTime;
171 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
172 }
173 else
174 XKillClient(dpy, sel->win);
175}
176
177void
178manage(Window w, XWindowAttributes *wa) {
179 Client *c, *t = NULL;
180 Window trans;
181 Status rettrans;
182 XWindowChanges wc;
183
184 c = emallocz(sizeof(Client));
185 c->tags = emallocz(ntags * sizeof(Bool));
186 c->win = w;
187 c->x = wa->x;
188 c->y = wa->y;
189 c->w = wa->width;
190 c->h = wa->height;
191 c->oldborder = wa->border_width;
192 if(c->w == sw && c->h == sh) {
193 c->x = sx;
194 c->y = sy;
195 c->border = wa->border_width;
196 }
197 else {
198 if(c->x + c->w + 2 * c->border > wax + waw)
199 c->x = wax + waw - c->w - 2 * c->border;
200 if(c->y + c->h + 2 * c->border > way + wah)
201 c->y = way + wah - c->h - 2 * c->border;
202 if(c->x < wax)
203 c->x = wax;
204 if(c->y < way)
205 c->y = way;
206 c->border = BORDERPX;
207 }
208 wc.border_width = c->border;
209 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
210 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
211 configure(c); /* propagates border_width, if size doesn't change */
212 updatesizehints(c);
213 XSelectInput(dpy, w,
214 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
215 grabbuttons(c, False);
216 updatetitle(c);
217 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
218 for(t = clients; t && t->win != trans; t = t->next);
219 settags(c, t);
220 if(!c->isfloating)
221 c->isfloating = (rettrans == Success) || c->isfixed;
222 attach(c);
223 attachstack(c);
224 c->isbanned = True;
225 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
226 XMapWindow(dpy, w);
227 setclientstate(c, NormalState);
228 focus(c);
229 lt->arrange();
230}
231
232void
233resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
234 float dx, dy, max, min, ratio;
235 XWindowChanges wc;
236
237 if(w <= 0 || h <= 0)
238 return;
239 if(sizehints) {
240 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
241 dx = (float)(w - c->basew);
242 dy = (float)(h - c->baseh);
243 min = (float)(c->minax) / (float)(c->minay);
244 max = (float)(c->maxax) / (float)(c->maxay);
245 ratio = dx / dy;
246 if(max > 0 && min > 0 && ratio > 0) {
247 if(ratio < min) {
248 dy = (dx * min + dy) / (min * min + 1);
249 dx = dy * min;
250 w = (int)dx + c->basew;
251 h = (int)dy + c->baseh;
252 }
253 else if(ratio > max) {
254 dy = (dx * min + dy) / (max * max + 1);
255 dx = dy * min;
256 w = (int)dx + c->basew;
257 h = (int)dy + c->baseh;
258 }
259 }
260 }
261 if(c->minw && w < c->minw)
262 w = c->minw;
263 if(c->minh && h < c->minh)
264 h = c->minh;
265 if(c->maxw && w > c->maxw)
266 w = c->maxw;
267 if(c->maxh && h > c->maxh)
268 h = c->maxh;
269 if(c->incw)
270 w -= (w - c->basew) % c->incw;
271 if(c->inch)
272 h -= (h - c->baseh) % c->inch;
273 }
274 if(w <= 0 || h <= 0)
275 return;
276 /* offscreen appearance fixes */
277 if(x > sw)
278 x = sw - w - 2 * c->border;
279 if(y > sh)
280 y = sh - h - 2 * c->border;
281 if(x + w + 2 * c->border < sx)
282 x = sx;
283 if(y + h + 2 * c->border < sy)
284 y = sy;
285 if(c->x != x || c->y != y || c->w != w || c->h != h) {
286 c->x = wc.x = x;
287 c->y = wc.y = y;
288 c->w = wc.width = w;
289 c->h = wc.height = h;
290 wc.border_width = c->border;
291 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
292 configure(c);
293 XSync(dpy, False);
294 }
295}
296
297void
298togglefloating(const char *arg) {
299 if(!sel || lt->arrange == floating)
300 return;
301 sel->isfloating = !sel->isfloating;
302 if(sel->isfloating)
303 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
304 lt->arrange();
305}
306
307void
308updatesizehints(Client *c) {
309 long msize;
310 XSizeHints size;
311
312 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
313 size.flags = PSize;
314 c->flags = size.flags;
315 if(c->flags & PBaseSize) {
316 c->basew = size.base_width;
317 c->baseh = size.base_height;
318 }
319 else if(c->flags & PMinSize) {
320 c->basew = size.min_width;
321 c->baseh = size.min_height;
322 }
323 else
324 c->basew = c->baseh = 0;
325 if(c->flags & PResizeInc) {
326 c->incw = size.width_inc;
327 c->inch = size.height_inc;
328 }
329 else
330 c->incw = c->inch = 0;
331 if(c->flags & PMaxSize) {
332 c->maxw = size.max_width;
333 c->maxh = size.max_height;
334 }
335 else
336 c->maxw = c->maxh = 0;
337 if(c->flags & PMinSize) {
338 c->minw = size.min_width;
339 c->minh = size.min_height;
340 }
341 else if(c->flags & PBaseSize) {
342 c->minw = size.base_width;
343 c->minh = size.base_height;
344 }
345 else
346 c->minw = c->minh = 0;
347 if(c->flags & PAspect) {
348 c->minax = size.min_aspect.x;
349 c->maxax = size.max_aspect.x;
350 c->minay = size.min_aspect.y;
351 c->maxay = size.max_aspect.y;
352 }
353 else
354 c->minax = c->maxax = c->minay = c->maxay = 0;
355 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
356 && c->maxw == c->minw && c->maxh == c->minh);
357}
358
359void
360updatetitle(Client *c) {
361 char **list = NULL;
362 int n;
363 XTextProperty name;
364
365 name.nitems = 0;
366 c->name[0] = 0;
367 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
368 if(!name.nitems)
369 XGetWMName(dpy, c->win, &name);
370 if(!name.nitems)
371 return;
372 if(name.encoding == XA_STRING)
373 strncpy(c->name, (char *)name.value, sizeof c->name - 1);
374 else {
375 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
376 && n > 0 && *list)
377 {
378 strncpy(c->name, *list, sizeof c->name - 1);
379 XFreeStringList(list);
380 }
381 }
382 c->name[sizeof c->name - 1] = '\0';
383 XFree(name.value);
384}
385
386void
387unmanage(Client *c) {
388 XWindowChanges wc;
389
390 wc.border_width = c->oldborder;
391 /* The server grab construct avoids race conditions. */
392 XGrabServer(dpy);
393 XSetErrorHandler(xerrordummy);
394 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
395 detach(c);
396 detachstack(c);
397 if(sel == c)
398 focus(NULL);
399 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
400 setclientstate(c, WithdrawnState);
401 free(c->tags);
402 free(c);
403 XSync(dpy, False);
404 XSetErrorHandler(xerror);
405 XUngrabServer(dpy);
406 lt->arrange();
407}