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 int
58xerrordummy(Display *dsply, XErrorEvent *ee) {
59 return 0;
60}
61
62/* extern functions */
63
64void
65ban(Client *c) {
66 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
67 XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
68}
69
70void
71configure(Client *c) {
72 XEvent synev;
73
74 synev.type = ConfigureNotify;
75 synev.xconfigure.display = dpy;
76 synev.xconfigure.event = c->win;
77 synev.xconfigure.window = c->win;
78 synev.xconfigure.x = c->x;
79 synev.xconfigure.y = c->y;
80 synev.xconfigure.width = c->w;
81 synev.xconfigure.height = c->h;
82 synev.xconfigure.border_width = c->border;
83 synev.xconfigure.above = None;
84 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
85}
86
87void
88focus(Client *c) {
89 Client *old;
90
91 if(!issel || (c && !isvisible(c)))
92 return;
93 if(!sel)
94 sel = c;
95 else if(sel != c) {
96 old = sel;
97 sel = c;
98 if(old) {
99 grabbuttons(old, False);
100 drawtitle(old);
101 }
102 }
103 if(c) {
104 detachstack(c);
105 c->snext = stack;
106 stack = c;
107 grabbuttons(c, True);
108 drawtitle(c);
109 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
110 }
111 else
112 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
113}
114
115Client *
116getclient(Window w) {
117 Client *c;
118
119 for(c = clients; c; c = c->next)
120 if(c->win == w)
121 return c;
122 return NULL;
123}
124
125Client *
126getctitle(Window w) {
127 Client *c;
128
129 for(c = clients; c; c = c->next)
130 if(c->twin == w)
131 return c;
132 return NULL;
133}
134
135void
136gravitate(Client *c, Bool invert) {
137 int dx = 0, dy = 0;
138
139 switch(c->grav) {
140 default:
141 break;
142 case StaticGravity:
143 case NorthWestGravity:
144 case NorthGravity:
145 case NorthEastGravity:
146 dy = c->border;
147 break;
148 case EastGravity:
149 case CenterGravity:
150 case WestGravity:
151 dy = -(c->h / 2) + c->border;
152 break;
153 case SouthEastGravity:
154 case SouthGravity:
155 case SouthWestGravity:
156 dy = -(c->h);
157 break;
158 }
159
160 switch (c->grav) {
161 default:
162 break;
163 case StaticGravity:
164 case NorthWestGravity:
165 case WestGravity:
166 case SouthWestGravity:
167 dx = c->border;
168 break;
169 case NorthGravity:
170 case CenterGravity:
171 case SouthGravity:
172 dx = -(c->w / 2) + c->border;
173 break;
174 case NorthEastGravity:
175 case EastGravity:
176 case SouthEastGravity:
177 dx = -(c->w + c->border);
178 break;
179 }
180
181 if(invert) {
182 dx = -dx;
183 dy = -dy;
184 }
185 c->x += dx;
186 c->y += dy;
187}
188
189void
190killclient(Arg *arg) {
191 if(!sel)
192 return;
193 if(sel->proto & PROTODELWIN)
194 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
195 else
196 XKillClient(dpy, sel->win);
197}
198
199void
200manage(Window w, XWindowAttributes *wa) {
201 Client *c;
202 Window trans;
203 XSetWindowAttributes twa;
204
205 c = emallocz(sizeof(Client));
206 c->tags = emallocz(ntags * sizeof(Bool));
207 c->win = w;
208 c->x = c->tx = wa->x;
209 c->y = c->ty = wa->y;
210 c->w = c->tw = wa->width;
211 c->h = wa->height;
212 c->th = bh;
213
214 c->border = 0;
215 updatesize(c);
216
217 if(c->x + c->w + 2 * BORDERPX > sw)
218 c->x = sw - c->w - 2 * BORDERPX;
219 if(c->x < 0)
220 c->x = 0;
221 if(c->y + c->h + 2 * BORDERPX > 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 updatetitle(c);
241 settags(c, getclient(trans));
242 if(!c->isfloat)
243 c->isfloat = trans
244 || (c->maxw && c->minw &&
245 c->maxw == c->minw && c->maxh == c->minh);
246 resizetitle(c);
247
248 if(clients)
249 clients->prev = c;
250 c->next = clients;
251 c->snext = stack;
252 stack = clients = c;
253
254 ban(c);
255 XMapWindow(dpy, c->win);
256 XMapWindow(dpy, c->twin);
257 if(isvisible(c))
258 focus(c);
259 arrange(NULL);
260}
261
262void
263resize(Client *c, Bool sizehints, Corner sticky) {
264 int bottom = c->y + c->h;
265 int right = c->x + c->w;
266 XWindowChanges wc;
267
268 if(sizehints) {
269 if(c->incw)
270 c->w -= (c->w - c->basew) % c->incw;
271 if(c->inch)
272 c->h -= (c->h - c->baseh) % c->inch;
273 if(c->minw && c->w < c->minw)
274 c->w = c->minw;
275 if(c->minh && c->h < c->minh)
276 c->h = c->minh;
277 if(c->maxw && c->w > c->maxw)
278 c->w = c->maxw;
279 if(c->maxh && c->h > c->maxh)
280 c->h = c->maxh;
281 }
282 if(sticky == TopRight || sticky == BotRight)
283 c->x = right - c->w;
284 if(sticky == BotLeft || sticky == BotRight)
285 c->y = bottom - c->h;
286
287 /* offscreen appearance fixes */
288 if(c->x + c->w < 0)
289 c->x = 0;
290 if(c->y + c->h < bh)
291 c->y = bh;
292 if(c->x > sw)
293 c->x = sw - c->w;
294 if(c->y > sh)
295 c->y = sh - c->h;
296
297 resizetitle(c);
298 wc.x = c->x;
299 wc.y = c->y;
300 wc.width = c->w;
301 wc.height = c->h;
302 if(c->w == sw && c->h == sh)
303 wc.border_width = 0;
304 else
305 wc.border_width = BORDERPX;
306 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
307 configure(c);
308 XSync(dpy, False);
309}
310
311void
312resizetitle(Client *c) {
313 c->tw = textw(c->name);
314 if(c->tw > c->w)
315 c->tw = c->w + 2 * BORDERPX;
316 c->tx = c->x + c->w - c->tw + 2 * BORDERPX;
317 c->ty = c->y;
318 if(isvisible(c))
319 XMoveResizeWindow(dpy, c->twin, c->tx, c->ty, c->tw, c->th);
320 else
321 XMoveResizeWindow(dpy, c->twin, c->tx + 2 * sw, c->ty, c->tw, c->th);
322}
323
324void
325updatesize(Client *c) {
326 long msize;
327 XSizeHints size;
328
329 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
330 size.flags = PSize;
331 c->flags = size.flags;
332 if(c->flags & PBaseSize) {
333 c->basew = size.base_width;
334 c->baseh = size.base_height;
335 }
336 else
337 c->basew = c->baseh = 0;
338 if(c->flags & PResizeInc) {
339 c->incw = size.width_inc;
340 c->inch = size.height_inc;
341 }
342 else
343 c->incw = c->inch = 0;
344 if(c->flags & PMaxSize) {
345 c->maxw = size.max_width;
346 c->maxh = size.max_height;
347 }
348 else
349 c->maxw = c->maxh = 0;
350 if(c->flags & PMinSize) {
351 c->minw = size.min_width;
352 c->minh = size.min_height;
353 }
354 else
355 c->minw = c->minh = 0;
356 if(c->flags & PWinGravity)
357 c->grav = size.win_gravity;
358 else
359 c->grav = NorthWestGravity;
360}
361
362void
363updatetitle(Client *c) {
364 char **list = NULL;
365 int n;
366 XTextProperty name;
367
368 name.nitems = 0;
369 c->name[0] = 0;
370 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
371 if(!name.nitems)
372 XGetWMName(dpy, c->win, &name);
373 if(!name.nitems)
374 return;
375 if(name.encoding == XA_STRING)
376 strncpy(c->name, (char *)name.value, sizeof(c->name));
377 else {
378 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
379 && n > 0 && *list)
380 {
381 strncpy(c->name, *list, sizeof(c->name));
382 XFreeStringList(list);
383 }
384 }
385 XFree(name.value);
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}