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