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 * © 2007 Premysl Hruby <dfenze at gmail dot com>
4 * See LICENSE file for license details. */
5#include "dwm.h"
6#include <stdlib.h>
7#include <string.h>
8#include <X11/Xatom.h>
9#include <X11/Xutil.h>
10
11/* static */
12
13static void
14attachstack(Client *c) {
15 c->snext = stack;
16 stack = c;
17}
18
19static void
20detachstack(Client *c) {
21 Client **tc;
22
23 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
24 *tc = c->snext;
25}
26
27static void
28grabbuttons(Client *c, Bool focused) {
29 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
30
31 if(focused) {
32 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
33 GrabModeAsync, GrabModeSync, None, None);
34 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
35 GrabModeAsync, GrabModeSync, None, None);
36 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
37 GrabModeAsync, GrabModeSync, None, None);
38 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
39 GrabModeAsync, GrabModeSync, None, None);
40
41 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
42 GrabModeAsync, GrabModeSync, None, None);
43 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
44 GrabModeAsync, GrabModeSync, None, None);
45 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
48 GrabModeAsync, GrabModeSync, None, None);
49
50 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
51 GrabModeAsync, GrabModeSync, None, None);
52 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
53 GrabModeAsync, GrabModeSync, None, None);
54 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
55 GrabModeAsync, GrabModeSync, None, None);
56 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
57 GrabModeAsync, GrabModeSync, None, None);
58 }
59 else
60 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
61 GrabModeAsync, GrabModeSync, None, None);
62}
63
64static Bool
65isprotodel(Client *c) {
66 int i, n;
67 Atom *protocols;
68 Bool ret = False;
69
70 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
71 for(i = 0; !ret && i < n; i++)
72 if(protocols[i] == wmatom[WMDelete])
73 ret = True;
74 XFree(protocols);
75 }
76 return ret;
77}
78
79static void
80setclientstate(Client *c, long state) {
81 long data[] = {state, None};
82
83 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
84 PropModeReplace, (unsigned char *)data, 2);
85}
86
87static int
88xerrordummy(Display *dsply, XErrorEvent *ee) {
89 return 0;
90}
91
92/* extern */
93
94void
95attach(Client *c) {
96 if(clients)
97 clients->prev = c;
98 c->next = clients;
99 clients = c;
100}
101
102void
103configure(Client *c) {
104 XConfigureEvent ce;
105
106 ce.type = ConfigureNotify;
107 ce.display = dpy;
108 ce.event = c->win;
109 ce.window = c->win;
110 ce.x = c->x;
111 ce.y = c->y;
112 ce.width = c->w;
113 ce.height = c->h;
114 ce.border_width = c->border;
115 ce.above = None;
116 ce.override_redirect = False;
117 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
118}
119
120void
121detach(Client *c) {
122 if(c->prev)
123 c->prev->next = c->next;
124 if(c->next)
125 c->next->prev = c->prev;
126 if(c == clients)
127 clients = c->next;
128 c->next = c->prev = NULL;
129}
130
131void
132focus(Client *c) {
133 if( !c && selscreen || c && !isvisible(c))
134 for(c = stack; c && !isvisible(c); c = c->snext);
135 if(sel && sel != c) {
136 grabbuttons(sel, False);
137 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
138 }
139 if(c) {
140 detachstack(c);
141 attachstack(c);
142 grabbuttons(c, True);
143 }
144 sel = c;
145 drawstatus();
146 if(!selscreen)
147 return;
148 if(c) {
149 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
150 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
151 }
152 else
153 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
154}
155
156void
157killclient(const char *arg) {
158 XEvent ev;
159
160 if(!sel)
161 return;
162 if(isprotodel(sel)) {
163 ev.type = ClientMessage;
164 ev.xclient.window = sel->win;
165 ev.xclient.message_type = wmatom[WMProtocols];
166 ev.xclient.format = 32;
167 ev.xclient.data.l[0] = wmatom[WMDelete];
168 ev.xclient.data.l[1] = CurrentTime;
169 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
170 }
171 else
172 XKillClient(dpy, sel->win);
173}
174
175void
176manage(Window w, XWindowAttributes *wa) {
177 Client *c, *t = NULL;
178 Window trans;
179 Status rettrans;
180 XWindowChanges wc;
181
182 c = emallocz(sizeof(Client));
183 c->tags = emallocz(ntags * sizeof(Bool));
184 c->win = w;
185 c->x = wa->x;
186 c->y = wa->y;
187 c->w = wa->width;
188 c->h = wa->height;
189 c->oldborder = wa->border_width;
190 if(c->w == sw && c->h == sh) {
191 c->x = sx;
192 c->y = sy;
193 c->border = wa->border_width;
194 }
195 else {
196 if(c->x + c->w + 2 * c->border > wax + waw)
197 c->x = wax + waw - c->w - 2 * c->border;
198 if(c->y + c->h + 2 * c->border > way + wah)
199 c->y = way + wah - c->h - 2 * c->border;
200 if(c->x < wax)
201 c->x = wax;
202 if(c->y < way)
203 c->y = way;
204 c->border = BORDERPX;
205 }
206 wc.border_width = c->border;
207 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
208 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
209 configure(c); /* propagates border_width, if size doesn't change */
210 updatesizehints(c);
211 XSelectInput(dpy, w,
212 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
213 grabbuttons(c, False);
214 updatetitle(c);
215 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
216 for(t = clients; t && t->win != trans; t = t->next);
217 settags(c, t);
218 if(!c->isfloating)
219 c->isfloating = (rettrans == Success) || c->isfixed;
220 attach(c);
221 attachstack(c);
222 c->isbanned = True;
223 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
224 XMapWindow(dpy, w);
225 setclientstate(c, NormalState);
226 focus(c);
227 lt->arrange();
228}
229
230void
231resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
232 float dx, dy, max, min, ratio;
233 XWindowChanges wc;
234
235 if(w <= 0 || h <= 0)
236 return;
237 if(sizehints) {
238 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
239 dx = (float)(w - c->basew);
240 dy = (float)(h - c->baseh);
241 min = (float)(c->minax) / (float)(c->minay);
242 max = (float)(c->maxax) / (float)(c->maxay);
243 ratio = dx / dy;
244 if(max > 0 && min > 0 && ratio > 0) {
245 if(ratio < min) {
246 dy = (dx * min + dy) / (min * min + 1);
247 dx = dy * min;
248 w = (int)dx + c->basew;
249 h = (int)dy + c->baseh;
250 }
251 else if(ratio > max) {
252 dy = (dx * min + dy) / (max * max + 1);
253 dx = dy * min;
254 w = (int)dx + c->basew;
255 h = (int)dy + c->baseh;
256 }
257 }
258 }
259 if(c->minw && w < c->minw)
260 w = c->minw;
261 if(c->minh && h < c->minh)
262 h = c->minh;
263 if(c->maxw && w > c->maxw)
264 w = c->maxw;
265 if(c->maxh && h > c->maxh)
266 h = c->maxh;
267 if(c->incw)
268 w -= (w - c->basew) % c->incw;
269 if(c->inch)
270 h -= (h - c->baseh) % c->inch;
271 }
272 if(w <= 0 || h <= 0)
273 return;
274 /* offscreen appearance fixes */
275 if(x > sw)
276 x = sw - w - 2 * c->border;
277 if(y > sh)
278 y = sh - h - 2 * c->border;
279 if(x + w + 2 * c->border < sx)
280 x = sx;
281 if(y + h + 2 * c->border < sy)
282 y = sy;
283 if(c->x != x || c->y != y || c->w != w || c->h != h) {
284 c->x = wc.x = x;
285 c->y = wc.y = y;
286 c->w = wc.width = w;
287 c->h = wc.height = h;
288 wc.border_width = c->border;
289 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
290 configure(c);
291 XSync(dpy, False);
292 }
293}
294
295void
296togglefloating(const char *arg) {
297 if(!sel || lt->arrange == floating)
298 return;
299 sel->isfloating = !sel->isfloating;
300 if(sel->isfloating)
301 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
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 - 1);
372 else {
373 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
374 && n > 0 && *list)
375 {
376 strncpy(c->name, *list, sizeof c->name - 1);
377 XFreeStringList(list);
378 }
379 }
380 c->name[sizeof c->name - 1] = '\0';
381 XFree(name.value);
382}
383
384void
385unmanage(Client *c) {
386 XWindowChanges wc;
387
388 wc.border_width = c->oldborder;
389 /* The server grab construct avoids race conditions. */
390 XGrabServer(dpy);
391 XSetErrorHandler(xerrordummy);
392 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
393 detach(c);
394 detachstack(c);
395 if(sel == c)
396 focus(NULL);
397 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
398 setclientstate(c, WithdrawnState);
399 free(c->tags);
400 free(c);
401 XSync(dpy, False);
402 XSetErrorHandler(xerror);
403 XUngrabServer(dpy);
404 lt->arrange();
405}