client.c (view raw)
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
13static void
14detachstack(Client *c) {
15 Client **tc;
16 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
17 *tc = c->snext;
18}
19
20static void
21grabbuttons(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
57static void
58resizetitle(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
70static int
71xerrordummy(Display *dsply, XErrorEvent *ee) {
72 return 0;
73}
74
75/* extern functions */
76
77void
78ban(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
83void
84configure(Client *c) {
85 XEvent synev;
86
87 synev.type = ConfigureNotify;
88 synev.xconfigure.display = dpy;
89 synev.xconfigure.event = c->win;
90 synev.xconfigure.window = c->win;
91 synev.xconfigure.x = c->x;
92 synev.xconfigure.y = c->y;
93 synev.xconfigure.width = c->w;
94 synev.xconfigure.height = c->h;
95 synev.xconfigure.border_width = c->border;
96 synev.xconfigure.above = None;
97 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
98}
99
100void
101focus(Client *c) {
102 Client *old;
103
104 if(!issel || (c && !isvisible(c)))
105 return;
106 if(!sel)
107 sel = c;
108 else if(sel != c) {
109 old = sel;
110 sel = c;
111 if(old) {
112 grabbuttons(old, False);
113 drawtitle(old);
114 }
115 }
116 if(c) {
117 detachstack(c);
118 c->snext = stack;
119 stack = c;
120 grabbuttons(c, True);
121 drawtitle(c);
122 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
123 }
124 else
125 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
126}
127
128Client *
129getclient(Window w) {
130 Client *c;
131
132 for(c = clients; c; c = c->next)
133 if(c->win == w)
134 return c;
135 return NULL;
136}
137
138Client *
139getctitle(Window w) {
140 Client *c;
141
142 for(c = clients; c; c = c->next)
143 if(c->twin == w)
144 return c;
145 return NULL;
146}
147
148void
149gravitate(Client *c, Bool invert) {
150 int dx = 0, dy = 0;
151
152 switch(c->grav) {
153 default:
154 break;
155 case StaticGravity:
156 case NorthWestGravity:
157 case NorthGravity:
158 case NorthEastGravity:
159 dy = c->border;
160 break;
161 case EastGravity:
162 case CenterGravity:
163 case WestGravity:
164 dy = -(c->h / 2) + c->border;
165 break;
166 case SouthEastGravity:
167 case SouthGravity:
168 case SouthWestGravity:
169 dy = -(c->h);
170 break;
171 }
172
173 switch (c->grav) {
174 default:
175 break;
176 case StaticGravity:
177 case NorthWestGravity:
178 case WestGravity:
179 case SouthWestGravity:
180 dx = c->border;
181 break;
182 case NorthGravity:
183 case CenterGravity:
184 case SouthGravity:
185 dx = -(c->w / 2) + c->border;
186 break;
187 case NorthEastGravity:
188 case EastGravity:
189 case SouthEastGravity:
190 dx = -(c->w + c->border);
191 break;
192 }
193
194 if(invert) {
195 dx = -dx;
196 dy = -dy;
197 }
198 c->x += dx;
199 c->y += dy;
200}
201
202void
203killclient(Arg *arg) {
204 if(!sel)
205 return;
206 if(sel->proto & PROTODELWIN)
207 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
208 else
209 XKillClient(dpy, sel->win);
210}
211
212void
213manage(Window w, XWindowAttributes *wa) {
214 Client *c;
215 Window trans;
216 XSetWindowAttributes twa;
217
218 c = emallocz(sizeof(Client));
219 c->tags = emallocz(ntags * sizeof(Bool));
220 c->win = w;
221 c->x = c->tx = wa->x;
222 c->y = c->ty = wa->y;
223 c->w = c->tw = wa->width;
224 c->h = wa->height;
225 c->th = bh;
226
227 c->border = 0;
228 updatesize(c);
229
230 if(c->x + c->w + 2 > sw)
231 c->x = sw - c->w - 2;
232 if(c->x < 0)
233 c->x = 0;
234 if(c->y + c->h + 2 > sh)
235 c->y = sh - c->h - 2;
236 if(c->h != sh && c->y < bh)
237 c->y = bh;
238
239 c->proto = getproto(c->win);
240 XSelectInput(dpy, c->win,
241 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
242 XGetTransientForHint(dpy, c->win, &trans);
243 twa.override_redirect = 1;
244 twa.background_pixmap = ParentRelative;
245 twa.event_mask = ExposureMask | EnterWindowMask;
246
247 c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
248 0, DefaultDepth(dpy, screen), CopyFromParent,
249 DefaultVisual(dpy, screen),
250 CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
251
252 grabbuttons(c, False);
253 settags(c, getclient(trans));
254 if(!c->isfloat)
255 c->isfloat = trans
256 || (c->maxw && c->minw &&
257 c->maxw == c->minw && c->maxh == c->minh);
258
259 if(clients)
260 clients->prev = c;
261 c->next = clients;
262 c->snext = stack;
263 stack = clients = c;
264
265 updatetitle(c);
266 ban(c);
267 XMapWindow(dpy, c->win);
268 XMapWindow(dpy, c->twin);
269 if(isvisible(c))
270 focus(c);
271 arrange(NULL);
272}
273
274void
275resize(Client *c, Bool sizehints, Corner sticky) {
276 int bottom = c->y + c->h;
277 int right = c->x + c->w;
278 XWindowChanges wc;
279
280 if(sizehints) {
281 if(c->incw)
282 c->w -= (c->w - c->basew) % c->incw;
283 if(c->inch)
284 c->h -= (c->h - c->baseh) % c->inch;
285 if(c->minw && c->w < c->minw)
286 c->w = c->minw;
287 if(c->minh && c->h < c->minh)
288 c->h = c->minh;
289 if(c->maxw && c->w > c->maxw)
290 c->w = c->maxw;
291 if(c->maxh && c->h > c->maxh)
292 c->h = c->maxh;
293 }
294 if(sticky == TopRight || sticky == BotRight)
295 c->x = right - c->w;
296 if(sticky == BotLeft || sticky == BotRight)
297 c->y = bottom - c->h;
298
299 /* offscreen appearance fixes */
300 if(c->x + c->w < 0)
301 c->x = 0;
302 if(c->y + c->h < bh)
303 c->y = bh;
304 if(c->x > sw)
305 c->x = sw - c->w;
306 if(c->y > sh)
307 c->y = sh - c->h;
308
309 resizetitle(c);
310 wc.x = c->x;
311 wc.y = c->y;
312 wc.width = c->w;
313 wc.height = c->h;
314 if(c->w == sw && c->h == sh)
315 wc.border_width = 0;
316 else
317 wc.border_width = 1;
318 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
319 configure(c);
320 XSync(dpy, False);
321}
322
323void
324updatesize(Client *c) {
325 long msize;
326 XSizeHints size;
327
328 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
329 size.flags = PSize;
330 c->flags = size.flags;
331 if(c->flags & PBaseSize) {
332 c->basew = size.base_width;
333 c->baseh = size.base_height;
334 }
335 else
336 c->basew = c->baseh = 0;
337 if(c->flags & PResizeInc) {
338 c->incw = size.width_inc;
339 c->inch = size.height_inc;
340 }
341 else
342 c->incw = c->inch = 0;
343 if(c->flags & PMaxSize) {
344 c->maxw = size.max_width;
345 c->maxh = size.max_height;
346 }
347 else
348 c->maxw = c->maxh = 0;
349 if(c->flags & PMinSize) {
350 c->minw = size.min_width;
351 c->minh = size.min_height;
352 }
353 else
354 c->minw = c->minh = 0;
355 if(c->flags & PWinGravity)
356 c->grav = size.win_gravity;
357 else
358 c->grav = NorthWestGravity;
359}
360
361void
362updatetitle(Client *c) {
363 char **list = NULL;
364 int n;
365 XTextProperty name;
366
367 name.nitems = 0;
368 c->name[0] = 0;
369 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
370 if(!name.nitems)
371 XGetWMName(dpy, c->win, &name);
372 if(!name.nitems)
373 return;
374 if(name.encoding == XA_STRING)
375 strncpy(c->name, (char *)name.value, sizeof(c->name));
376 else {
377 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
378 && n > 0 && *list)
379 {
380 strncpy(c->name, *list, sizeof(c->name));
381 XFreeStringList(list);
382 }
383 }
384 XFree(name.value);
385 resizetitle(c);
386}
387
388void
389unmanage(Client *c) {
390 Client *nc;
391
392 /* The server grab construct avoids race conditions. */
393 XGrabServer(dpy);
394 XSetErrorHandler(xerrordummy);
395
396 detach(c);
397 detachstack(c);
398 if(sel == c) {
399 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
400 focus(nc);
401 }
402
403 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
404 XDestroyWindow(dpy, c->twin);
405
406 free(c->tags);
407 free(c);
408
409 XSync(dpy, False);
410 XSetErrorHandler(xerror);
411 XUngrabServer(dpy);
412 arrange(NULL);
413}