client.c (view raw)
1/* See LICENSE file for copyright and license details. */
2#include "dwm.h"
3#include <stdlib.h>
4#include <string.h>
5#include <X11/Xatom.h>
6#include <X11/Xutil.h>
7
8/* static */
9
10static void
11attachstack(Client *c) {
12 c->snext = stack;
13 stack = c;
14}
15
16static void
17detachstack(Client *c) {
18 Client **tc;
19
20 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
21 *tc = c->snext;
22}
23
24static void
25grabbuttons(Client *c, Bool focused) {
26 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
27
28 if(focused) {
29 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
30 GrabModeAsync, GrabModeSync, None, None);
31 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
32 GrabModeAsync, GrabModeSync, None, None);
33 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
34 GrabModeAsync, GrabModeSync, None, None);
35 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37
38 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
39 GrabModeAsync, GrabModeSync, None, None);
40 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
41 GrabModeAsync, GrabModeSync, None, None);
42 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
43 GrabModeAsync, GrabModeSync, None, None);
44 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
45 GrabModeAsync, GrabModeSync, None, None);
46
47 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
48 GrabModeAsync, GrabModeSync, None, None);
49 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
50 GrabModeAsync, GrabModeSync, None, None);
51 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
52 GrabModeAsync, GrabModeSync, None, None);
53 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
54 GrabModeAsync, GrabModeSync, None, None);
55 }
56 else
57 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
58 GrabModeAsync, GrabModeSync, None, None);
59}
60
61static Bool
62isprotodel(Client *c) {
63 int i, n;
64 Atom *protocols;
65 Bool ret = False;
66
67 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
68 for(i = 0; !ret && i < n; i++)
69 if(protocols[i] == wmatom[WMDelete])
70 ret = True;
71 XFree(protocols);
72 }
73 return ret;
74}
75
76static void
77setclientstate(Client *c, long state) {
78 long data[] = {state, None};
79
80 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
81 PropModeReplace, (unsigned char *)data, 2);
82}
83
84static int
85xerrordummy(Display *dsply, XErrorEvent *ee) {
86 return 0;
87}
88
89/* extern */
90
91void
92attach(Client *c) {
93 if(clients)
94 clients->prev = c;
95 c->next = clients;
96 clients = c;
97}
98
99void
100ban(Client *c) {
101 if(c->isbanned)
102 return;
103 XUnmapWindow(dpy, c->win);
104 setclientstate(c, IconicState);
105 c->isbanned = True;
106 c->unmapped++;
107}
108
109void
110configure(Client *c) {
111 XConfigureEvent ce;
112
113 ce.type = ConfigureNotify;
114 ce.display = dpy;
115 ce.event = c->win;
116 ce.window = c->win;
117 ce.x = c->x;
118 ce.y = c->y;
119 ce.width = c->w;
120 ce.height = c->h;
121 ce.border_width = c->border;
122 ce.above = None;
123 ce.override_redirect = False;
124 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
125}
126
127void
128detach(Client *c) {
129 if(c->prev)
130 c->prev->next = c->next;
131 if(c->next)
132 c->next->prev = c->prev;
133 if(c == clients)
134 clients = c->next;
135 c->next = c->prev = NULL;
136}
137
138void
139focus(Client *c) {
140 if((!c && selscreen) || (c && !isvisible(c)))
141 for(c = stack; c && !isvisible(c); c = c->snext);
142 if(sel && sel != c) {
143 grabbuttons(sel, False);
144 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
145 }
146 if(c) {
147 detachstack(c);
148 attachstack(c);
149 grabbuttons(c, True);
150 }
151 sel = c;
152 drawstatus();
153 if(!selscreen)
154 return;
155 if(c) {
156 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
157 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
158 }
159 else
160 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
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 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
230 setclientstate(c, IconicState);
231 c->isbanned = True;
232 focus(c);
233 lt->arrange();
234}
235
236void
237resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
238 float dx, dy, max, min, ratio;
239 XWindowChanges wc;
240
241 if(w <= 0 || h <= 0)
242 return;
243 if(sizehints) {
244 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
245 dx = (float)(w - c->basew);
246 dy = (float)(h - c->baseh);
247 min = (float)(c->minax) / (float)(c->minay);
248 max = (float)(c->maxax) / (float)(c->maxay);
249 ratio = dx / dy;
250 if(max > 0 && min > 0 && ratio > 0) {
251 if(ratio < min) {
252 dy = (dx * min + dy) / (min * min + 1);
253 dx = dy * min;
254 w = (int)dx + c->basew;
255 h = (int)dy + c->baseh;
256 }
257 else if(ratio > max) {
258 dy = (dx * min + dy) / (max * max + 1);
259 dx = dy * min;
260 w = (int)dx + c->basew;
261 h = (int)dy + c->baseh;
262 }
263 }
264 }
265 if(c->minw && w < c->minw)
266 w = c->minw;
267 if(c->minh && h < c->minh)
268 h = c->minh;
269 if(c->maxw && w > c->maxw)
270 w = c->maxw;
271 if(c->maxh && h > c->maxh)
272 h = c->maxh;
273 if(c->incw)
274 w -= (w - c->basew) % c->incw;
275 if(c->inch)
276 h -= (h - c->baseh) % c->inch;
277 }
278 if(w <= 0 || h <= 0)
279 return;
280 /* offscreen appearance fixes */
281 if(x > sw)
282 x = sw - w - 2 * c->border;
283 if(y > sh)
284 y = sh - h - 2 * c->border;
285 if(x + w + 2 * c->border < sx)
286 x = sx;
287 if(y + h + 2 * c->border < sy)
288 y = sy;
289 if(c->x != x || c->y != y || c->w != w || c->h != h) {
290 c->x = wc.x = x;
291 c->y = wc.y = y;
292 c->w = wc.width = w;
293 c->h = wc.height = h;
294 wc.border_width = c->border;
295 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
296 configure(c);
297 XSync(dpy, False);
298 }
299}
300
301void
302togglefloating(const char *arg) {
303 if(!sel || lt->arrange == floating)
304 return;
305 sel->isfloating = !sel->isfloating;
306 if(sel->isfloating)
307 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
308 lt->arrange();
309}
310
311void
312unban(Client *c) {
313 if(!c->isbanned)
314 return;
315 XMapWindow(dpy, c->win);
316 setclientstate(c, NormalState);
317 c->isbanned = False;
318}
319
320void
321unmanage(Client *c) {
322 XWindowChanges wc;
323
324 wc.border_width = c->oldborder;
325 /* The server grab construct avoids race conditions. */
326 XGrabServer(dpy);
327 XSetErrorHandler(xerrordummy);
328 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
329 detach(c);
330 detachstack(c);
331 if(sel == c)
332 focus(NULL);
333 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
334 setclientstate(c, WithdrawnState);
335 free(c->tags);
336 free(c);
337 XSync(dpy, False);
338 XSetErrorHandler(xerror);
339 XUngrabServer(dpy);
340 lt->arrange();
341}
342
343void
344updatesizehints(Client *c) {
345 long msize;
346 XSizeHints size;
347
348 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
349 size.flags = PSize;
350 c->flags = size.flags;
351 if(c->flags & PBaseSize) {
352 c->basew = size.base_width;
353 c->baseh = size.base_height;
354 }
355 else if(c->flags & PMinSize) {
356 c->basew = size.min_width;
357 c->baseh = size.min_height;
358 }
359 else
360 c->basew = c->baseh = 0;
361 if(c->flags & PResizeInc) {
362 c->incw = size.width_inc;
363 c->inch = size.height_inc;
364 }
365 else
366 c->incw = c->inch = 0;
367 if(c->flags & PMaxSize) {
368 c->maxw = size.max_width;
369 c->maxh = size.max_height;
370 }
371 else
372 c->maxw = c->maxh = 0;
373 if(c->flags & PMinSize) {
374 c->minw = size.min_width;
375 c->minh = size.min_height;
376 }
377 else if(c->flags & PBaseSize) {
378 c->minw = size.base_width;
379 c->minh = size.base_height;
380 }
381 else
382 c->minw = c->minh = 0;
383 if(c->flags & PAspect) {
384 c->minax = size.min_aspect.x;
385 c->maxax = size.max_aspect.x;
386 c->minay = size.min_aspect.y;
387 c->maxay = size.max_aspect.y;
388 }
389 else
390 c->minax = c->maxax = c->minay = c->maxay = 0;
391 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
392 && c->maxw == c->minw && c->maxh == c->minh);
393}
394
395void
396updatetitle(Client *c) {
397 char **list = NULL;
398 int n;
399 XTextProperty name;
400
401 name.nitems = 0;
402 c->name[0] = 0;
403 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
404 if(!name.nitems)
405 XGetWMName(dpy, c->win, &name);
406 if(!name.nitems)
407 return;
408 if(name.encoding == XA_STRING)
409 strncpy(c->name, (char *)name.value, sizeof c->name - 1);
410 else {
411 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
412 && n > 0 && *list)
413 {
414 strncpy(c->name, *list, sizeof c->name - 1);
415 XFreeStringList(list);
416 }
417 }
418 c->name[sizeof c->name - 1] = '\0';
419 XFree(name.value);
420}