client.c (view raw)
1/* © 2004-2007 Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details. */
3#include "dwm.h"
4#include <stdlib.h>
5#include <string.h>
6#include <X11/Xatom.h>
7#include <X11/Xutil.h>
8
9/* static */
10
11static void
12attachstack(Client *c) {
13 c->snext = stack;
14 stack = c;
15}
16
17static void
18detachstack(Client *c) {
19 Client **tc;
20
21 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
22 *tc = c->snext;
23}
24
25static void
26grabbuttons(Client *c, Bool focused) {
27 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
28
29 if(focused) {
30 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
31 GrabModeAsync, GrabModeSync, None, None);
32 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
33 GrabModeAsync, GrabModeSync, None, None);
34 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
35 GrabModeAsync, GrabModeSync, None, None);
36 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
37 GrabModeAsync, GrabModeSync, None, None);
38
39 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
40 GrabModeAsync, GrabModeSync, None, None);
41 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
42 GrabModeAsync, GrabModeSync, None, None);
43 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
44 GrabModeAsync, GrabModeSync, None, None);
45 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47
48 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
49 GrabModeAsync, GrabModeSync, None, None);
50 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
51 GrabModeAsync, GrabModeSync, None, None);
52 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
53 GrabModeAsync, GrabModeSync, None, None);
54 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
55 GrabModeAsync, GrabModeSync, None, None);
56 }
57 else
58 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
59 GrabModeAsync, GrabModeSync, None, None);
60}
61
62static Bool
63isprotodel(Client *c) {
64 int i, n;
65 Atom *protocols;
66 Bool ret = False;
67
68 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
69 for(i = 0; !ret && i < n; i++)
70 if(protocols[i] == wmatom[WMDelete])
71 ret = True;
72 XFree(protocols);
73 }
74 return ret;
75}
76
77static void
78setclientstate(Client *c, long state) {
79 long data[] = {state, None};
80
81 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
82 PropModeReplace, (unsigned char *)data, 2);
83}
84
85static int
86xerrordummy(Display *dsply, XErrorEvent *ee) {
87 return 0;
88}
89
90/* extern */
91
92void
93attach(Client *c) {
94 if(clients)
95 clients->prev = c;
96 c->next = clients;
97 clients = c;
98}
99
100void
101configure(Client *c) {
102 XConfigureEvent ce;
103
104 ce.type = ConfigureNotify;
105 ce.display = dpy;
106 ce.event = c->win;
107 ce.window = c->win;
108 ce.x = c->x;
109 ce.y = c->y;
110 ce.width = c->w;
111 ce.height = c->h;
112 ce.border_width = c->border;
113 ce.above = None;
114 ce.override_redirect = False;
115 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
116}
117
118void
119detach(Client *c) {
120 if(c->prev)
121 c->prev->next = c->next;
122 if(c->next)
123 c->next->prev = c->prev;
124 if(c == clients)
125 clients = c->next;
126 c->next = c->prev = NULL;
127}
128
129void
130focus(Client *c) {
131 if(c && !isvisible(c))
132 return;
133 if(sel && sel != c) {
134 grabbuttons(sel, False);
135 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
136 }
137 if(c) {
138 detachstack(c);
139 attachstack(c);
140 grabbuttons(c, True);
141 }
142 sel = c;
143 drawstatus();
144 if(!selscreen)
145 return;
146 if(c) {
147 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
148 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
149 }
150 else
151 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
152}
153
154void
155killclient(const char *arg) {
156 XEvent ev;
157
158 if(!sel)
159 return;
160 if(isprotodel(sel)) {
161 ev.type = ClientMessage;
162 ev.xclient.window = sel->win;
163 ev.xclient.message_type = wmatom[WMProtocols];
164 ev.xclient.format = 32;
165 ev.xclient.data.l[0] = wmatom[WMDelete];
166 ev.xclient.data.l[1] = CurrentTime;
167 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
168 }
169 else
170 XKillClient(dpy, sel->win);
171}
172
173void
174manage(Window w, XWindowAttributes *wa) {
175 Client *c, *t = NULL;
176 Window trans;
177 Status rettrans;
178 XWindowChanges wc;
179
180 c = emallocz(sizeof(Client));
181 c->tags = emallocz(ntags * sizeof(Bool));
182 c->win = w;
183 c->x = wa->x;
184 c->y = wa->y;
185 c->w = wa->width;
186 c->h = wa->height;
187 if(c->w == sw && c->h == sh) {
188 c->border = 0;
189 c->x = sx;
190 c->y = sy;
191 }
192 else {
193 c->border = BORDERPX;
194 if(c->x + c->w + 2 * c->border > wax + waw)
195 c->x = wax + waw - c->w - 2 * c->border;
196 if(c->y + c->h + 2 * c->border > way + wah)
197 c->y = way + wah - c->h - 2 * c->border;
198 if(c->x < wax)
199 c->x = wax;
200 if(c->y < way)
201 c->y = way;
202 }
203 updatesizehints(c);
204 XSelectInput(dpy, w,
205 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
206 grabbuttons(c, False);
207 wc.border_width = c->border;
208 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
209 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
210 configure(c); /* propagates border_width, if size doesn't change */
211 updatetitle(c);
212 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
213 for(t = clients; t && t->win != trans; t = t->next);
214 settags(c, t);
215 if(!c->isfloating)
216 c->isfloating = (rettrans == Success) || c->isfixed;
217 attach(c);
218 attachstack(c);
219 c->isbanned = True;
220 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
221 XMapWindow(dpy, w);
222 setclientstate(c, NormalState);
223 if(isvisible(c))
224 focus(c);
225 lt->arrange();
226}
227
228void
229resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
230 float dx, dy, max, min, ratio;
231 XWindowChanges wc;
232
233 if(w <= 0 || h <= 0)
234 return;
235 if(sizehints) {
236 if(c->minay > 0 && c->maxay > 0 && (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 ratio = dx / dy;
242 if(max > 0 && min > 0 && ratio > 0) {
243 if(ratio < 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(ratio > 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->minw && w < c->minw)
258 w = c->minw;
259 if(c->minh && h < c->minh)
260 h = c->minh;
261 if(c->maxw && w > c->maxw)
262 w = c->maxw;
263 if(c->maxh && h > c->maxh)
264 h = c->maxh;
265 if(c->incw)
266 w -= (w - c->basew) % c->incw;
267 if(c->inch)
268 h -= (h - c->baseh) % c->inch;
269 }
270 if(w <= 0 || h <= 0)
271 return;
272 if(w == sw && h == sh)
273 c->border = 0;
274 else
275 c->border = BORDERPX;
276 /* offscreen appearance fixes */
277 if(x > sw)
278 x = sw - w - 2 * c->border;
279 if(y > sh)
280 y = sh - h - 2 * c->border;
281 if(x + w + 2 * c->border < sx)
282 x = sx;
283 if(y + h + 2 * c->border < sy)
284 y = sy;
285 if(c->x != x || c->y != y || c->w != w || c->h != h) {
286 c->x = wc.x = x;
287 c->y = wc.y = y;
288 c->w = wc.width = w;
289 c->h = wc.height = h;
290 wc.border_width = c->border;
291 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
292 configure(c);
293 XSync(dpy, False);
294 }
295}
296
297void
298togglefloating(const char *arg) {
299 if(!sel || lt->arrange == floating)
300 return;
301 sel->isfloating = !sel->isfloating;
302 lt->arrange();
303}
304
305void
306updatesizehints(Client *c) {
307 long msize;
308 XSizeHints size;
309
310 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
311 size.flags = PSize;
312 c->flags = size.flags;
313 if(c->flags & PBaseSize) {
314 c->basew = size.base_width;
315 c->baseh = size.base_height;
316 }
317 else if(c->flags & PMinSize) {
318 c->basew = size.min_width;
319 c->baseh = size.min_height;
320 }
321 else
322 c->basew = c->baseh = 0;
323 if(c->flags & PResizeInc) {
324 c->incw = size.width_inc;
325 c->inch = size.height_inc;
326 }
327 else
328 c->incw = c->inch = 0;
329 if(c->flags & PMaxSize) {
330 c->maxw = size.max_width;
331 c->maxh = size.max_height;
332 }
333 else
334 c->maxw = c->maxh = 0;
335 if(c->flags & PMinSize) {
336 c->minw = size.min_width;
337 c->minh = size.min_height;
338 }
339 else if(c->flags & PBaseSize) {
340 c->minw = size.base_width;
341 c->minh = size.base_height;
342 }
343 else
344 c->minw = c->minh = 0;
345 if(c->flags & PAspect) {
346 c->minax = size.min_aspect.x;
347 c->maxax = size.max_aspect.x;
348 c->minay = size.min_aspect.y;
349 c->maxay = size.max_aspect.y;
350 }
351 else
352 c->minax = c->maxax = c->minay = c->maxay = 0;
353 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
354 && c->maxw == c->minw && c->maxh == c->minh);
355}
356
357void
358updatetitle(Client *c) {
359 char **list = NULL;
360 int n;
361 XTextProperty name;
362
363 name.nitems = 0;
364 c->name[0] = 0;
365 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
366 if(!name.nitems)
367 XGetWMName(dpy, c->win, &name);
368 if(!name.nitems)
369 return;
370 if(name.encoding == XA_STRING)
371 strncpy(c->name, (char *)name.value, sizeof c->name);
372 else {
373 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
374 && n > 0 && *list)
375 {
376 strncpy(c->name, *list, sizeof c->name);
377 XFreeStringList(list);
378 }
379 }
380 XFree(name.value);
381}
382
383void
384unmanage(Client *c) {
385 Client *nc;
386
387 /* The server grab construct avoids race conditions. */
388 XGrabServer(dpy);
389 XSetErrorHandler(xerrordummy);
390 detach(c);
391 detachstack(c);
392 if(sel == c) {
393 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
394 focus(nc);
395 }
396 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
397 setclientstate(c, WithdrawnState);
398 free(c->tags);
399 free(c);
400 XSync(dpy, False);
401 XSetErrorHandler(xerror);
402 XUngrabServer(dpy);
403 lt->arrange();
404}