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 char buf[128];
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
102ban(Client *c) {
103 if(c->isbanned)
104 return;
105 XUnmapWindow(dpy, c->win);
106 setclientstate(c, IconicState);
107 c->isbanned = True;
108 c->unmapped++;
109}
110
111void
112configure(Client *c) {
113 XConfigureEvent ce;
114
115 ce.type = ConfigureNotify;
116 ce.display = dpy;
117 ce.event = c->win;
118 ce.window = c->win;
119 ce.x = c->x;
120 ce.y = c->y;
121 ce.width = c->w;
122 ce.height = c->h;
123 ce.border_width = c->border;
124 ce.above = None;
125 ce.override_redirect = False;
126 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
127}
128
129void
130detach(Client *c) {
131 if(c->prev)
132 c->prev->next = c->next;
133 if(c->next)
134 c->next->prev = c->prev;
135 if(c == clients)
136 clients = c->next;
137 c->next = c->prev = NULL;
138}
139
140void
141focus(Client *c) {
142 if((!c && selscreen) || (c && !isvisible(c)))
143 for(c = stack; c && !isvisible(c); c = c->snext);
144 if(sel && sel != c) {
145 grabbuttons(sel, False);
146 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
147 }
148 if(c) {
149 detachstack(c);
150 attachstack(c);
151 grabbuttons(c, True);
152 }
153 sel = c;
154 drawstatus();
155 if(!selscreen)
156 return;
157 if(c) {
158 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
159 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
160 }
161 else
162 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
163}
164
165void
166killclient(const char *arg) {
167 XEvent ev;
168
169 if(!sel)
170 return;
171 if(isprotodel(sel)) {
172 ev.type = ClientMessage;
173 ev.xclient.window = sel->win;
174 ev.xclient.message_type = wmatom[WMProtocols];
175 ev.xclient.format = 32;
176 ev.xclient.data.l[0] = wmatom[WMDelete];
177 ev.xclient.data.l[1] = CurrentTime;
178 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
179 }
180 else
181 XKillClient(dpy, sel->win);
182}
183
184Bool
185getprops(Client *c) {
186 unsigned int i;
187 Bool result = False;
188
189 if(gettextprop(c->win, dwmprops, buf, sizeof buf)) {
190 for(i = 0; i < ntags && i < sizeof buf - 1 && buf[i] != '\0'; i++)
191 if((c->tags[i] = buf[i] == '1'))
192 result = True;
193 if(i < sizeof buf - 1 && buf[i] != '\0')
194 c->isfloating = buf[i] == '1';
195 }
196 return result;
197}
198
199void
200manage(Window w, XWindowAttributes *wa) {
201 unsigned int i;
202 Client *c, *t = NULL;
203 Window trans;
204 Status rettrans;
205 XWindowChanges wc;
206
207 c = emallocz(sizeof(Client));
208 c->tags = emallocz(ntags * sizeof(Bool));
209 c->win = w;
210 c->x = wa->x;
211 c->y = wa->y;
212 c->w = wa->width;
213 c->h = wa->height;
214 c->oldborder = wa->border_width;
215 if(c->w == sw && c->h == sh) {
216 c->x = sx;
217 c->y = sy;
218 c->border = wa->border_width;
219 }
220 else {
221 if(c->x + c->w + 2 * c->border > wax + waw)
222 c->x = wax + waw - c->w - 2 * c->border;
223 if(c->y + c->h + 2 * c->border > way + wah)
224 c->y = way + wah - c->h - 2 * c->border;
225 if(c->x < wax)
226 c->x = wax;
227 if(c->y < way)
228 c->y = way;
229 c->border = BORDERPX;
230 }
231 wc.border_width = c->border;
232 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
233 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
234 configure(c); /* propagates border_width, if size doesn't change */
235 updatesizehints(c);
236 XSelectInput(dpy, w,
237 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
238 grabbuttons(c, False);
239 updatetitle(c);
240 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
241 for(t = clients; t && t->win != trans; t = t->next);
242 if(t)
243 for(i = 0; i < ntags; i++)
244 c->tags[i] = t->tags[i];
245 if(!getprops(c))
246 applyrules(c);
247 if(!c->isfloating)
248 c->isfloating = (rettrans == Success) || c->isfixed;
249 setprops(c);
250 attach(c);
251 attachstack(c);
252 XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h); /* some windows require this */
253 ban(c);
254 arrange();
255}
256
257void
258resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
259 double dx, dy, max, min, ratio;
260 XWindowChanges wc;
261
262 if(sizehints) {
263 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0 && (w - c->basew) > 0) {
264 dx = (double)(w - c->basew);
265 dy = (double)(h - c->baseh);
266 min = (double)(c->minax) / (double)(c->minay);
267 max = (double)(c->maxax) / (double)(c->maxay);
268 ratio = dx / dy;
269 if(max > 0 && min > 0 && ratio > 0) {
270 if(ratio < min) {
271 dy = (dx * min + dy) / (min * min + 1);
272 dx = dy * min;
273 w = (int)dx + c->basew;
274 h = (int)dy + c->baseh;
275 }
276 else if(ratio > max) {
277 dy = (dx * min + dy) / (max * max + 1);
278 dx = dy * min;
279 w = (int)dx + c->basew;
280 h = (int)dy + c->baseh;
281 }
282 }
283 }
284 if(c->minw && w < c->minw)
285 w = c->minw;
286 if(c->minh && h < c->minh)
287 h = c->minh;
288 if(c->maxw && w > c->maxw)
289 w = c->maxw;
290 if(c->maxh && h > c->maxh)
291 h = c->maxh;
292 if(c->incw)
293 w -= (w - c->basew) % c->incw;
294 if(c->inch)
295 h -= (h - c->baseh) % c->inch;
296 }
297 if(w <= 0 || h <= 0)
298 return;
299 /* offscreen appearance fixes */
300 if(x > sw)
301 x = sw - w - 2 * c->border;
302 if(y > sh)
303 y = sh - h - 2 * c->border;
304 if(x + w + 2 * c->border < sx)
305 x = sx;
306 if(y + h + 2 * c->border < sy)
307 y = sy;
308 if(c->x != x || c->y != y || c->w != w || c->h != h) {
309 c->x = wc.x = x;
310 c->y = wc.y = y;
311 c->w = wc.width = w;
312 c->h = wc.height = h;
313 wc.border_width = c->border;
314 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
315 configure(c);
316 XSync(dpy, False);
317 }
318}
319
320void
321setprops(Client *c) {
322 unsigned int i;
323
324 for(i = 0; i < ntags && i < sizeof buf - 1; i++)
325 buf[i] = c->tags[i] ? '1' : '0';
326 if(i < sizeof buf - 1)
327 buf[i++] = c->isfloating ? '1' : '0';
328 buf[i] = '\0';
329 XChangeProperty(dpy, c->win, dwmprops, XA_STRING, 8,
330 PropModeReplace, (unsigned char *)buf, i);
331}
332
333void
334unban(Client *c) {
335 if(!c->isbanned)
336 return;
337 XMapWindow(dpy, c->win);
338 setclientstate(c, NormalState);
339 c->isbanned = False;
340}
341
342void
343unmanage(Client *c, long state) {
344 XWindowChanges wc;
345
346 wc.border_width = c->oldborder;
347 /* The server grab construct avoids race conditions. */
348 XGrabServer(dpy);
349 XSetErrorHandler(xerrordummy);
350 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
351 detach(c);
352 detachstack(c);
353 if(sel == c)
354 focus(NULL);
355 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
356 setclientstate(c, state);
357 free(c->tags);
358 free(c);
359 XSync(dpy, False);
360 XSetErrorHandler(xerror);
361 XUngrabServer(dpy);
362 if(state != NormalState)
363 arrange();
364}
365
366void
367updatesizehints(Client *c) {
368 long msize;
369 XSizeHints size;
370
371 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
372 size.flags = PSize;
373 c->flags = size.flags;
374 if(c->flags & PBaseSize) {
375 c->basew = size.base_width;
376 c->baseh = size.base_height;
377 }
378 else if(c->flags & PMinSize) {
379 c->basew = size.min_width;
380 c->baseh = size.min_height;
381 }
382 else
383 c->basew = c->baseh = 0;
384 if(c->flags & PResizeInc) {
385 c->incw = size.width_inc;
386 c->inch = size.height_inc;
387 }
388 else
389 c->incw = c->inch = 0;
390 if(c->flags & PMaxSize) {
391 c->maxw = size.max_width;
392 c->maxh = size.max_height;
393 }
394 else
395 c->maxw = c->maxh = 0;
396 if(c->flags & PMinSize) {
397 c->minw = size.min_width;
398 c->minh = size.min_height;
399 }
400 else if(c->flags & PBaseSize) {
401 c->minw = size.base_width;
402 c->minh = size.base_height;
403 }
404 else
405 c->minw = c->minh = 0;
406 if(c->flags & PAspect) {
407 c->minax = size.min_aspect.x;
408 c->maxax = size.max_aspect.x;
409 c->minay = size.min_aspect.y;
410 c->maxay = size.max_aspect.y;
411 }
412 else
413 c->minax = c->maxax = c->minay = c->maxay = 0;
414 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
415 && c->maxw == c->minw && c->maxh == c->minh);
416}
417
418void
419updatetitle(Client *c) {
420 if(!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
421 gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
422}