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 * See LICENSE file for license details. */
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
156focustopvisible(void) {
157 Client *c;
158
159 for(c = stack; c && !isvisible(c); c = c->snext);
160 focus(c);
161}
162
163void
164killclient(const char *arg) {
165 XEvent ev;
166
167 if(!sel)
168 return;
169 if(isprotodel(sel)) {
170 ev.type = ClientMessage;
171 ev.xclient.window = sel->win;
172 ev.xclient.message_type = wmatom[WMProtocols];
173 ev.xclient.format = 32;
174 ev.xclient.data.l[0] = wmatom[WMDelete];
175 ev.xclient.data.l[1] = CurrentTime;
176 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
177 }
178 else
179 XKillClient(dpy, sel->win);
180}
181
182void
183manage(Window w, XWindowAttributes *wa) {
184 Client *c, *t = NULL;
185 Window trans;
186 Status rettrans;
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 c->oldborder = wa->border_width;
197 if(c->w == sw && c->h == sh) {
198 c->x = sx;
199 c->y = sy;
200 c->border = wa->border_width;
201 }
202 else {
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 c->border = BORDERPX;
212 }
213 wc.border_width = c->border;
214 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
215 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
216 configure(c); /* propagates border_width, if size doesn't change */
217 updatesizehints(c);
218 XSelectInput(dpy, w,
219 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
220 grabbuttons(c, False);
221 updatetitle(c);
222 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
223 for(t = clients; t && t->win != trans; t = t->next);
224 settags(c, t);
225 if(!c->isfloating)
226 c->isfloating = (rettrans == Success) || c->isfixed;
227 attach(c);
228 attachstack(c);
229 c->isbanned = True;
230 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
231 XMapWindow(dpy, w);
232 setclientstate(c, NormalState);
233 if(isvisible(c))
234 focus(c);
235 lt->arrange();
236}
237
238void
239resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
240 float dx, dy, max, min, ratio;
241 XWindowChanges wc;
242
243 if(w <= 0 || h <= 0)
244 return;
245 if(sizehints) {
246 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
247 dx = (float)(w - c->basew);
248 dy = (float)(h - c->baseh);
249 min = (float)(c->minax) / (float)(c->minay);
250 max = (float)(c->maxax) / (float)(c->maxay);
251 ratio = dx / dy;
252 if(max > 0 && min > 0 && ratio > 0) {
253 if(ratio < min) {
254 dy = (dx * min + dy) / (min * min + 1);
255 dx = dy * min;
256 w = (int)dx + c->basew;
257 h = (int)dy + c->baseh;
258 }
259 else if(ratio > max) {
260 dy = (dx * min + dy) / (max * max + 1);
261 dx = dy * min;
262 w = (int)dx + c->basew;
263 h = (int)dy + c->baseh;
264 }
265 }
266 }
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 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 <= 0 || h <= 0)
281 return;
282 /* offscreen appearance fixes */
283 if(x > sw)
284 x = sw - w - 2 * c->border;
285 if(y > sh)
286 y = sh - h - 2 * c->border;
287 if(x + w + 2 * c->border < sx)
288 x = sx;
289 if(y + h + 2 * c->border < sy)
290 y = sy;
291 if(c->x != x || c->y != y || c->w != w || c->h != h) {
292 c->x = wc.x = x;
293 c->y = wc.y = y;
294 c->w = wc.width = w;
295 c->h = wc.height = h;
296 wc.border_width = c->border;
297 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
298 configure(c);
299 XSync(dpy, False);
300 }
301}
302
303void
304togglefloating(const char *arg) {
305 if(!sel || lt->arrange == floating)
306 return;
307 sel->isfloating = !sel->isfloating;
308 lt->arrange();
309}
310
311void
312updatesizehints(Client *c) {
313 long msize;
314 XSizeHints size;
315
316 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
317 size.flags = PSize;
318 c->flags = size.flags;
319 if(c->flags & PBaseSize) {
320 c->basew = size.base_width;
321 c->baseh = size.base_height;
322 }
323 else if(c->flags & PMinSize) {
324 c->basew = size.min_width;
325 c->baseh = size.min_height;
326 }
327 else
328 c->basew = c->baseh = 0;
329 if(c->flags & PResizeInc) {
330 c->incw = size.width_inc;
331 c->inch = size.height_inc;
332 }
333 else
334 c->incw = c->inch = 0;
335 if(c->flags & PMaxSize) {
336 c->maxw = size.max_width;
337 c->maxh = size.max_height;
338 }
339 else
340 c->maxw = c->maxh = 0;
341 if(c->flags & PMinSize) {
342 c->minw = size.min_width;
343 c->minh = size.min_height;
344 }
345 else if(c->flags & PBaseSize) {
346 c->minw = size.base_width;
347 c->minh = size.base_height;
348 }
349 else
350 c->minw = c->minh = 0;
351 if(c->flags & PAspect) {
352 c->minax = size.min_aspect.x;
353 c->maxax = size.max_aspect.x;
354 c->minay = size.min_aspect.y;
355 c->maxay = size.max_aspect.y;
356 }
357 else
358 c->minax = c->maxax = c->minay = c->maxay = 0;
359 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
360 && c->maxw == c->minw && c->maxh == c->minh);
361}
362
363void
364updatetitle(Client *c) {
365 char **list = NULL;
366 int n;
367 XTextProperty name;
368
369 name.nitems = 0;
370 c->name[0] = 0;
371 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
372 if(!name.nitems)
373 XGetWMName(dpy, c->win, &name);
374 if(!name.nitems)
375 return;
376 if(name.encoding == XA_STRING)
377 strncpy(c->name, (char *)name.value, sizeof c->name - 1);
378 else {
379 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
380 && n > 0 && *list)
381 {
382 strncpy(c->name, *list, sizeof c->name - 1);
383 XFreeStringList(list);
384 }
385 }
386 c->name[sizeof c->name - 1] = '\0';
387 XFree(name.value);
388}
389
390void
391unmanage(Client *c) {
392 XWindowChanges wc;
393
394 wc.border_width = c->oldborder;
395 /* The server grab construct avoids race conditions. */
396 XGrabServer(dpy);
397 XSetErrorHandler(xerrordummy);
398 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
399 detach(c);
400 detachstack(c);
401 if(sel == c)
402 focustopvisible();
403 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
404 setclientstate(c, WithdrawnState);
405 free(c->tags);
406 free(c);
407 XSync(dpy, False);
408 XSetErrorHandler(xerror);
409 XUngrabServer(dpy);
410 lt->arrange();
411}