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 if(!sel)
158 return;
159 if(isprotodel(sel))
160 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
161 else
162 XKillClient(dpy, sel->win);
163}
164
165void
166manage(Window w, XWindowAttributes *wa) {
167 Client *c, *t;
168 Window trans;
169 XWindowChanges wc;
170
171 c = emallocz(sizeof(Client));
172 c->tags = emallocz(ntags * sizeof(Bool));
173 c->win = w;
174 c->x = wa->x;
175 c->y = wa->y;
176 c->w = wa->width;
177 c->h = wa->height;
178 if(c->w == sw && c->h == sh) {
179 c->border = 0;
180 c->x = sx;
181 c->y = sy;
182 }
183 else {
184 c->border = BORDERPX;
185 if(c->x + c->w + 2 * c->border > wax + waw)
186 c->x = wax + waw - c->w - 2 * c->border;
187 if(c->y + c->h + 2 * c->border > way + wah)
188 c->y = way + wah - c->h - 2 * c->border;
189 if(c->x < wax)
190 c->x = wax;
191 if(c->y < way)
192 c->y = way;
193 }
194 updatesizehints(c);
195 XSelectInput(dpy, w,
196 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
197 XGetTransientForHint(dpy, w, &trans);
198 grabbuttons(c, False);
199 wc.border_width = c->border;
200 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
201 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
202 configure(c); /* propagates border_width, if size doesn't change */
203 updatetitle(c);
204 for(t = clients; t && t->win != trans; t = t->next);
205 settags(c, t);
206 if(!c->isversatile)
207 c->isversatile = (t != NULL) || c->isfixed;
208 attach(c);
209 attachstack(c);
210 c->isbanned = True;
211 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
212 XMapWindow(dpy, w);
213 setclientstate(c, NormalState);
214 if(isvisible(c))
215 focus(c);
216 lt->arrange();
217}
218
219void
220resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
221 float actual, dx, dy, max, min;
222 XWindowChanges wc;
223
224 if(w <= 0 || h <= 0)
225 return;
226 if(sizehints) {
227 if(c->minw && w < c->minw)
228 w = c->minw;
229 if(c->minh && h < c->minh)
230 h = c->minh;
231 if(c->maxw && w > c->maxw)
232 w = c->maxw;
233 if(c->maxh && h > c->maxh)
234 h = c->maxh;
235 /* inspired by algorithm from fluxbox */
236 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
237 dx = (float)(w - c->basew);
238 dy = (float)(h - c->baseh);
239 min = (float)(c->minax) / (float)(c->minay);
240 max = (float)(c->maxax) / (float)(c->maxay);
241 actual = dx / dy;
242 if(max > 0 && min > 0 && actual > 0) {
243 if(actual < min) {
244 dy = (dx * min + dy) / (min * min + 1);
245 dx = dy * min;
246 w = (int)dx + c->basew;
247 h = (int)dy + c->baseh;
248 }
249 else if(actual > max) {
250 dy = (dx * min + dy) / (max * max + 1);
251 dx = dy * min;
252 w = (int)dx + c->basew;
253 h = (int)dy + c->baseh;
254 }
255 }
256 }
257 if(c->incw)
258 w -= (w - c->basew) % c->incw;
259 if(c->inch)
260 h -= (h - c->baseh) % c->inch;
261 }
262 if(w == sw && h == sh)
263 c->border = 0;
264 else
265 c->border = BORDERPX;
266 /* offscreen appearance fixes */
267 if(x > sw)
268 x = sw - w - 2 * c->border;
269 if(y > sh)
270 y = sh - h - 2 * c->border;
271 if(x + w + 2 * c->border < sx)
272 x = sx;
273 if(y + h + 2 * c->border < sy)
274 y = sy;
275 if(c->x != x || c->y != y || c->w != w || c->h != h) {
276 c->x = wc.x = x;
277 c->y = wc.y = y;
278 c->w = wc.width = w;
279 c->h = wc.height = h;
280 wc.border_width = c->border;
281 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
282 configure(c);
283 XSync(dpy, False);
284 }
285}
286
287void
288toggleversatile(const char *arg) {
289 if(!sel || lt->arrange == versatile)
290 return;
291 sel->isversatile = !sel->isversatile;
292 lt->arrange();
293}
294
295void
296updatesizehints(Client *c) {
297 long msize;
298 XSizeHints size;
299
300 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
301 size.flags = PSize;
302 c->flags = size.flags;
303 if(c->flags & PBaseSize) {
304 c->basew = size.base_width;
305 c->baseh = size.base_height;
306 }
307 else
308 c->basew = c->baseh = 0;
309 if(c->flags & PResizeInc) {
310 c->incw = size.width_inc;
311 c->inch = size.height_inc;
312 }
313 else
314 c->incw = c->inch = 0;
315 if(c->flags & PMaxSize) {
316 c->maxw = size.max_width;
317 c->maxh = size.max_height;
318 }
319 else
320 c->maxw = c->maxh = 0;
321 if(c->flags & PMinSize) {
322 c->minw = size.min_width;
323 c->minh = size.min_height;
324 }
325 else
326 c->minw = c->minh = 0;
327 if(c->flags & PAspect) {
328 c->minax = size.min_aspect.x;
329 c->minay = size.min_aspect.y;
330 c->maxax = size.max_aspect.x;
331 c->maxay = size.max_aspect.y;
332 }
333 else
334 c->minax = c->minay = c->maxax = c->maxay = 0;
335 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
336 && c->maxw == c->minw && c->maxh == c->minh);
337}
338
339void
340updatetitle(Client *c) {
341 char **list = NULL;
342 int n;
343 XTextProperty name;
344
345 name.nitems = 0;
346 c->name[0] = 0;
347 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
348 if(!name.nitems)
349 XGetWMName(dpy, c->win, &name);
350 if(!name.nitems)
351 return;
352 if(name.encoding == XA_STRING)
353 strncpy(c->name, (char *)name.value, sizeof c->name);
354 else {
355 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
356 && n > 0 && *list)
357 {
358 strncpy(c->name, *list, sizeof c->name);
359 XFreeStringList(list);
360 }
361 }
362 XFree(name.value);
363}
364
365void
366unmanage(Client *c) {
367 Client *nc;
368
369 /* The server grab construct avoids race conditions. */
370 XGrabServer(dpy);
371 XSetErrorHandler(xerrordummy);
372 detach(c);
373 detachstack(c);
374 if(sel == c) {
375 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
376 focus(nc);
377 }
378 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
379 setclientstate(c, WithdrawnState);
380 free(c->tags);
381 free(c);
382 XSync(dpy, False);
383 XSetErrorHandler(xerror);
384 XUngrabServer(dpy);
385 lt->arrange();
386}