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 int
87xerrordummy(Display *dsply, XErrorEvent *ee) {
88 return 0;
89}
90
91/* extern */
92
93void
94attach(Client *c) {
95 if(clients)
96 clients->prev = c;
97 c->next = clients;
98 clients = c;
99}
100
101void
102configure(Client *c) {
103 XConfigureEvent ce;
104
105 ce.type = ConfigureNotify;
106 ce.display = dpy;
107 ce.event = c->win;
108 ce.window = c->win;
109 ce.x = c->x;
110 ce.y = c->y;
111 ce.width = c->w;
112 ce.height = c->h;
113 ce.border_width = c->border;
114 ce.above = None;
115 ce.override_redirect = False;
116 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
117}
118
119void
120detach(Client *c) {
121 if(c->prev)
122 c->prev->next = c->next;
123 if(c->next)
124 c->next->prev = c->prev;
125 if(c == clients)
126 clients = c->next;
127 c->next = c->prev = NULL;
128}
129
130void
131focus(Client *c) {
132 if(c && !isvisible(c))
133 return;
134 if(sel && sel != c) {
135 grabbuttons(sel, False);
136 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
137 }
138 if(c) {
139 detachstack(c);
140 attachstack(c);
141 grabbuttons(c, True);
142 }
143 sel = c;
144 drawstatus();
145 if(!selscreen)
146 return;
147 if(c) {
148 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
149 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
150 }
151 else
152 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
153}
154
155void
156killclient(const char *arg) {
157 XEvent ev;
158
159 if(!sel)
160 return;
161 if(isprotodel(sel)) {
162 ev.type = ClientMessage;
163 ev.xclient.window = sel->win;
164 ev.xclient.message_type = wmatom[WMProtocols];
165 ev.xclient.format = 32;
166 ev.xclient.data.l[0] = wmatom[WMDelete];
167 ev.xclient.data.l[1] = CurrentTime;
168 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
169 }
170 else
171 XKillClient(dpy, sel->win);
172}
173
174void
175manage(Window w, XWindowAttributes *wa) {
176 Client *c, *t = NULL;
177 Window trans;
178 Status rettrans;
179 XWindowChanges wc;
180
181 c = emallocz(sizeof(Client));
182 c->tags = emallocz(ntags * sizeof(Bool));
183 c->win = w;
184 c->x = wa->x;
185 c->y = wa->y;
186 c->w = wa->width;
187 c->h = wa->height;
188 if(c->w == sw && c->h == sh) {
189 c->border = 0;
190 c->x = sx;
191 c->y = sy;
192 }
193 else {
194 c->border = BORDERPX;
195 if(c->x + c->w + 2 * c->border > wax + waw)
196 c->x = wax + waw - c->w - 2 * c->border;
197 if(c->y + c->h + 2 * c->border > way + wah)
198 c->y = way + wah - c->h - 2 * c->border;
199 if(c->x < wax)
200 c->x = wax;
201 if(c->y < way)
202 c->y = way;
203 }
204 updatesizehints(c);
205 XSelectInput(dpy, w,
206 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
207 grabbuttons(c, False);
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 updatetitle(c);
213 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
214 for(t = clients; t && t->win != trans; t = t->next);
215 settags(c, t);
216 if(!c->isfloating)
217 c->isfloating = (rettrans == Success) || c->isfixed;
218 attach(c);
219 attachstack(c);
220 c->isbanned = True;
221 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
222 XMapWindow(dpy, w);
223 setclientstate(c, NormalState);
224 if(isvisible(c))
225 focus(c);
226 lt->arrange();
227}
228
229void
230resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
231 float dx, dy, max, min, ratio;
232 XWindowChanges wc;
233
234 if(w <= 0 || h <= 0)
235 return;
236 if(sizehints) {
237 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
238 dx = (float)(w - c->basew);
239 dy = (float)(h - c->baseh);
240 min = (float)(c->minax) / (float)(c->minay);
241 max = (float)(c->maxax) / (float)(c->maxay);
242 ratio = dx / dy;
243 if(max > 0 && min > 0 && ratio > 0) {
244 if(ratio < min) {
245 dy = (dx * min + dy) / (min * min + 1);
246 dx = dy * min;
247 w = (int)dx + c->basew;
248 h = (int)dy + c->baseh;
249 }
250 else if(ratio > max) {
251 dy = (dx * min + dy) / (max * max + 1);
252 dx = dy * min;
253 w = (int)dx + c->basew;
254 h = (int)dy + c->baseh;
255 }
256 }
257 }
258 if(c->minw && w < c->minw)
259 w = c->minw;
260 if(c->minh && h < c->minh)
261 h = c->minh;
262 if(c->maxw && w > c->maxw)
263 w = c->maxw;
264 if(c->maxh && h > c->maxh)
265 h = c->maxh;
266 if(c->incw)
267 w -= (w - c->basew) % c->incw;
268 if(c->inch)
269 h -= (h - c->baseh) % c->inch;
270 }
271 if(w <= 0 || h <= 0)
272 return;
273 if(w == sw && h == sh)
274 c->border = 0;
275 else
276 c->border = BORDERPX;
277 /* offscreen appearance fixes */
278 if(x > sw)
279 x = sw - w - 2 * c->border;
280 if(y > sh)
281 y = sh - h - 2 * c->border;
282 if(x + w + 2 * c->border < sx)
283 x = sx;
284 if(y + h + 2 * c->border < sy)
285 y = sy;
286 if(c->x != x || c->y != y || c->w != w || c->h != h) {
287 c->x = wc.x = x;
288 c->y = wc.y = y;
289 c->w = wc.width = w;
290 c->h = wc.height = h;
291 wc.border_width = c->border;
292 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
293 configure(c);
294 XSync(dpy, False);
295 }
296}
297
298void
299togglefloating(const char *arg) {
300 if(!sel || lt->arrange == floating)
301 return;
302 sel->isfloating = !sel->isfloating;
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);
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
384void
385unmanage(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}