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slight change to config.arg.h (I use ff floating)
[dwm.git] / client.c
1 /*
2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3  * See LICENSE file for license details.
4  */
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 functions */
12
13 static void
14 detachstack(Client *c) {
15         Client **tc;
16         for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
17         *tc = c->snext;
18 }
19
20 static void
21 grabbuttons(Client *c, Bool focused) {
22         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
23
24         if(focused) {
25                 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
26                                 GrabModeAsync, GrabModeSync, None, None);
27                 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
28                                 GrabModeAsync, GrabModeSync, None, None);
29                 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
30                                 GrabModeAsync, GrabModeSync, None, None);
31                 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
32                                 GrabModeAsync, GrabModeSync, None, None);
33
34                 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
35                                 GrabModeAsync, GrabModeSync, None, None);
36                 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
37                                 GrabModeAsync, GrabModeSync, None, None);
38                 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
39                                 GrabModeAsync, GrabModeSync, None, None);
40                 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
41                                 GrabModeAsync, GrabModeSync, None, None);
42
43                 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
44                                 GrabModeAsync, GrabModeSync, None, None);
45                 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
46                                 GrabModeAsync, GrabModeSync, None, None);
47                 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
48                                 GrabModeAsync, GrabModeSync, None, None);
49                 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
50                                 GrabModeAsync, GrabModeSync, None, None);
51         }
52         else
53                 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
54                                 GrabModeAsync, GrabModeSync, None, None);
55 }
56
57 static void
58 resizetitle(Client *c) {
59         c->tw = textw(c->name);
60         if(c->tw > c->w)
61                 c->tw = c->w + 2;
62         c->tx = c->x + c->w - c->tw + 2;
63         c->ty = c->y;
64         if(isvisible(c))
65                 XMoveResizeWindow(dpy, c->twin, c->tx, c->ty, c->tw, c->th);
66         else
67                 XMoveResizeWindow(dpy, c->twin, c->tx + 2 * sw, c->ty, c->tw, c->th);
68 }
69
70 static int
71 xerrordummy(Display *dsply, XErrorEvent *ee) {
72         return 0;
73 }
74
75 /* extern functions */
76
77 void
78 ban(Client *c) {
79         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
80         XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
81 }
82
83 void
84 focus(Client *c) {
85         Client *old;
86
87         if(!issel || (c && !isvisible(c)))
88                 return;
89         if(!sel)
90                 sel = c;
91         else if(sel != c) {
92                 old = sel;
93                 sel = c;
94                 if(old) {
95                         grabbuttons(old, False);
96                         drawtitle(old);
97                 }
98         }
99         if(c) {
100                 detachstack(c);
101                 c->snext = stack;
102                 stack = c;
103                 grabbuttons(c, True);
104                 drawtitle(c);
105                 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
106         }
107         else
108                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
109 }
110
111 Client *
112 getclient(Window w) {
113         Client *c;
114
115         for(c = clients; c; c = c->next)
116                 if(c->win == w)
117                         return c;
118         return NULL;
119 }
120
121 Client *
122 getctitle(Window w) {
123         Client *c;
124
125         for(c = clients; c; c = c->next)
126                 if(c->twin == w)
127                         return c;
128         return NULL;
129 }
130
131 void
132 gravitate(Client *c, Bool invert) {
133         int dx = 0, dy = 0;
134
135         switch(c->grav) {
136         default:
137                 break;
138         case StaticGravity:
139         case NorthWestGravity:
140         case NorthGravity:
141         case NorthEastGravity:
142                 dy = c->border;
143                 break;
144         case EastGravity:
145         case CenterGravity:
146         case WestGravity:
147                 dy = -(c->h / 2) + c->border;
148                 break;
149         case SouthEastGravity:
150         case SouthGravity:
151         case SouthWestGravity:
152                 dy = -(c->h);
153                 break;
154         }
155
156         switch (c->grav) {
157         default:
158                 break;
159         case StaticGravity:
160         case NorthWestGravity:
161         case WestGravity:
162         case SouthWestGravity:
163                 dx = c->border;
164                 break;
165         case NorthGravity:
166         case CenterGravity:
167         case SouthGravity:
168                 dx = -(c->w / 2) + c->border;
169                 break;
170         case NorthEastGravity:
171         case EastGravity:
172         case SouthEastGravity:
173                 dx = -(c->w + c->border);
174                 break;
175         }
176
177         if(invert) {
178                 dx = -dx;
179                 dy = -dy;
180         }
181         c->x += dx;
182         c->y += dy;
183 }
184
185 void
186 killclient(Arg *arg) {
187         if(!sel)
188                 return;
189         if(sel->proto & PROTODELWIN)
190                 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
191         else
192                 XKillClient(dpy, sel->win);
193 }
194
195 void
196 manage(Window w, XWindowAttributes *wa) {
197         Client *c;
198         Window trans;
199         XSetWindowAttributes twa;
200
201         c = emallocz(sizeof(Client));
202         c->tags = emallocz(ntags * sizeof(Bool));
203         c->win = w;
204         c->x = c->tx = wa->x;
205         c->y = c->ty = wa->y;
206         c->w = c->tw = wa->width;
207         c->h = wa->height;
208         c->th = bh;
209         c->rx = sx;
210         c->ry = bh;
211         c->rw = sw;
212         c->rh = sh - bh;
213
214         c->border = 0;
215         updatesize(c);
216
217         if(c->x + c->w + 2 > sw)
218                 c->x = sw - c->w - 2;
219         if(c->x < 0)
220                 c->x = 0;
221         if(c->y + c->h + 2 > sh)
222                 c->y = sh - c->h - 2;
223         if(c->h != sh && c->y < bh)
224                 c->y = bh;
225
226         c->proto = getproto(c->win);
227         XSelectInput(dpy, c->win,
228                 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
229         XGetTransientForHint(dpy, c->win, &trans);
230         twa.override_redirect = 1;
231         twa.background_pixmap = ParentRelative;
232         twa.event_mask = ExposureMask | EnterWindowMask;
233
234         c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
235                         0, DefaultDepth(dpy, screen), CopyFromParent,
236                         DefaultVisual(dpy, screen),
237                         CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
238
239         grabbuttons(c, False);
240         settags(c, getclient(trans));
241         if(!c->isfloat)
242                 c->isfloat = trans
243                         || (c->maxw && c->minw &&
244                                 c->maxw == c->minw && c->maxh == c->minh);
245
246         if(clients)
247                 clients->prev = c;
248         c->next = clients;
249         c->snext = stack;
250         stack = clients = c;
251
252         updatetitle(c);
253         ban(c);
254         XMapWindow(dpy, c->win);
255         XMapWindow(dpy, c->twin);
256         if(isvisible(c))
257                 focus(c);
258         arrange(NULL);
259 }
260
261 void
262 resize(Client *c, Bool sizehints, Corner sticky) {
263         int bottom = c->y + c->h;
264         int right = c->x + c->w;
265         XWindowChanges wc;
266
267         if(sizehints) {
268                 if(c->incw)
269                         c->w -= (c->w - c->basew) % c->incw;
270                 if(c->inch)
271                         c->h -= (c->h - c->baseh) % c->inch;
272                 if(c->minw && c->w < c->minw)
273                         c->w = c->minw;
274                 if(c->minh && c->h < c->minh)
275                         c->h = c->minh;
276                 if(c->maxw && c->w > c->maxw)
277                         c->w = c->maxw;
278                 if(c->maxh && c->h > c->maxh)
279                         c->h = c->maxh;
280         }
281         if(sticky == TopRight || sticky == BotRight)
282                 c->x = right - c->w;
283         if(sticky == BotLeft || sticky == BotRight)
284                 c->y = bottom - c->h;
285
286         /* offscreen appearance fixes */
287         if(c->x + c->w < 0)
288                 c->x = 0;
289         if(c->y + c->h < bh)
290                 c->y = bh;
291         if(c->x > sw)
292                 c->x = sw - c->w;
293         if(c->y > sh)
294                 c->y = sh - c->h;
295
296         resizetitle(c);
297         wc.x = c->x;
298         wc.y = c->y;
299         wc.width = c->w;
300         wc.height = c->h;
301         if(c->w == sw && c->h == sh)
302                 wc.border_width = 0;
303         else
304                 wc.border_width = 1;
305         XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
306         XSync(dpy, False);
307 }
308
309 void
310 updatesize(Client *c) {
311         long msize;
312         XSizeHints size;
313
314         if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
315                 size.flags = PSize;
316         c->flags = size.flags;
317         if(c->flags & PBaseSize) {
318                 c->basew = size.base_width;
319                 c->baseh = size.base_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
340                 c->minw = c->minh = 0;
341         if(c->flags & PWinGravity)
342                 c->grav = size.win_gravity;
343         else
344                 c->grav = NorthWestGravity;
345 }
346
347 void
348 updatetitle(Client *c) {
349         char **list = NULL;
350         int n;
351         XTextProperty name;
352
353         name.nitems = 0;
354         c->name[0] = 0;
355         XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
356         if(!name.nitems)
357                 XGetWMName(dpy, c->win, &name);
358         if(!name.nitems)
359                 return;
360         if(name.encoding == XA_STRING)
361                 strncpy(c->name, (char *)name.value, sizeof(c->name));
362         else {
363                 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
364                                 && n > 0 && *list)
365                 {
366                         strncpy(c->name, *list, sizeof(c->name));
367                         XFreeStringList(list);
368                 }
369         }
370         XFree(name.value);
371         resizetitle(c);
372 }
373
374 void
375 unmanage(Client *c) {
376         Client *nc;
377
378         /* The server grab construct avoids race conditions. */
379         XGrabServer(dpy);
380         XSetErrorHandler(xerrordummy);
381
382         detach(c);
383         detachstack(c);
384         if(sel == c) {
385                 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
386                 focus(nc);
387         }
388
389         XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
390         XDestroyWindow(dpy, c->twin);
391
392         free(c->tags);
393         free(c);
394
395         XSync(dpy, False);
396         XSetErrorHandler(xerror);
397         XUngrabServer(dpy);
398         arrange(NULL);
399 }