client.c (view raw)
1/* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
4#include "dwm.h"
5#include <stdlib.h>
6#include <string.h>
7#include <X11/Xatom.h>
8#include <X11/Xutil.h>
9
10/* static functions */
11
12static void
13detachstack(Client *c) {
14 Client **tc;
15 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
16 *tc = c->snext;
17}
18
19static void
20grabbuttons(Client *c, Bool focused) {
21 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
22
23 if(focused) {
24 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
25 GrabModeAsync, GrabModeSync, None, None);
26 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
27 GrabModeAsync, GrabModeSync, None, None);
28 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
29 GrabModeAsync, GrabModeSync, None, None);
30 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
31 GrabModeAsync, GrabModeSync, None, None);
32
33 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
34 GrabModeAsync, GrabModeSync, None, None);
35 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
38 GrabModeAsync, GrabModeSync, None, None);
39 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
40 GrabModeAsync, GrabModeSync, None, None);
41
42 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
43 GrabModeAsync, GrabModeSync, None, None);
44 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
45 GrabModeAsync, GrabModeSync, None, None);
46 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
47 GrabModeAsync, GrabModeSync, None, None);
48 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
49 GrabModeAsync, GrabModeSync, None, None);
50 }
51 else
52 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
53 GrabModeAsync, GrabModeSync, None, None);
54}
55
56static int
57xerrordummy(Display *dsply, XErrorEvent *ee) {
58 return 0;
59}
60
61/* extern functions */
62
63void
64ban(Client *c) {
65 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
66 XMoveWindow(dpy, c->twin, c->tx + 2 * sw, c->ty);
67}
68
69void
70configure(Client *c) {
71 XEvent synev;
72
73 synev.type = ConfigureNotify;
74 synev.xconfigure.display = dpy;
75 synev.xconfigure.event = c->win;
76 synev.xconfigure.window = c->win;
77 synev.xconfigure.x = c->x;
78 synev.xconfigure.y = c->y;
79 synev.xconfigure.width = c->w;
80 synev.xconfigure.height = c->h;
81 synev.xconfigure.border_width = c->border;
82 synev.xconfigure.above = None;
83 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
84}
85
86void
87focus(Client *c) {
88 Client *old;
89
90 if(!issel || (c && !isvisible(c)))
91 return;
92 if(!sel)
93 sel = c;
94 else if(sel != c) {
95 old = sel;
96 sel = c;
97 if(old) {
98 grabbuttons(old, False);
99 drawtitle(old);
100 }
101 }
102 if(c) {
103 detachstack(c);
104 c->snext = stack;
105 stack = c;
106 grabbuttons(c, True);
107 drawtitle(c);
108 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
109 }
110 else
111 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
112}
113
114Client *
115getclient(Window w) {
116 Client *c;
117
118 for(c = clients; c; c = c->next)
119 if(c->win == w)
120 return c;
121 return NULL;
122}
123
124Client *
125getctitle(Window w) {
126 Client *c;
127
128 for(c = clients; c; c = c->next)
129 if(c->twin == w)
130 return c;
131 return NULL;
132}
133
134void
135gravitate(Client *c, Bool invert) {
136 int dx = 0, dy = 0;
137
138 switch(c->grav) {
139 default:
140 break;
141 case StaticGravity:
142 case NorthWestGravity:
143 case NorthGravity:
144 case NorthEastGravity:
145 dy = c->border;
146 break;
147 case EastGravity:
148 case CenterGravity:
149 case WestGravity:
150 dy = -(c->h / 2) + c->border;
151 break;
152 case SouthEastGravity:
153 case SouthGravity:
154 case SouthWestGravity:
155 dy = -(c->h);
156 break;
157 }
158 switch (c->grav) {
159 default:
160 break;
161 case StaticGravity:
162 case NorthWestGravity:
163 case WestGravity:
164 case SouthWestGravity:
165 dx = c->border;
166 break;
167 case NorthGravity:
168 case CenterGravity:
169 case SouthGravity:
170 dx = -(c->w / 2) + c->border;
171 break;
172 case NorthEastGravity:
173 case EastGravity:
174 case SouthEastGravity:
175 dx = -(c->w + c->border);
176 break;
177 }
178 if(invert) {
179 dx = -dx;
180 dy = -dy;
181 }
182 c->x += dx;
183 c->y += dy;
184}
185
186void
187killclient(Arg *arg) {
188 if(!sel)
189 return;
190 if(sel->proto & PROTODELWIN)
191 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
192 else
193 XKillClient(dpy, sel->win);
194}
195
196void
197manage(Window w, XWindowAttributes *wa) {
198 Client *c;
199 Window trans;
200 XSetWindowAttributes twa;
201
202 c = emallocz(sizeof(Client));
203 c->tags = emallocz(ntags * sizeof(Bool));
204 c->win = w;
205 c->x = c->tx = wa->x;
206 c->y = c->ty = wa->y;
207 c->w = c->tw = wa->width;
208 c->h = wa->height;
209 c->th = bh;
210 c->border = 0;
211 updatesize(c);
212 if(c->x + c->w + 2 * BORDERPX > sw)
213 c->x = sw - c->w - 2 * BORDERPX;
214 if(c->x < sx)
215 c->x = sx;
216 if(c->y + c->h + 2 * BORDERPX > sh)
217 c->y = sh - c->h - 2 * BORDERPX;
218 if(c->h != sh && c->y < bh)
219 c->y = bh;
220 c->proto = getproto(c->win);
221 XSelectInput(dpy, c->win,
222 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
223 XGetTransientForHint(dpy, c->win, &trans);
224 twa.override_redirect = 1;
225 twa.background_pixmap = ParentRelative;
226 twa.event_mask = ExposureMask | EnterWindowMask;
227 c->twin = XCreateWindow(dpy, root, c->tx, c->ty, c->tw, c->th,
228 0, DefaultDepth(dpy, screen), CopyFromParent,
229 DefaultVisual(dpy, screen),
230 CWOverrideRedirect | CWBackPixmap | CWEventMask, &twa);
231 grabbuttons(c, False);
232 updatetitle(c);
233 settags(c, getclient(trans));
234 if(!c->isfloat)
235 c->isfloat = trans
236 || (c->maxw && c->minw &&
237 c->maxw == c->minw && c->maxh == c->minh);
238 resizetitle(c);
239 if(clients)
240 clients->prev = c;
241 c->next = clients;
242 c->snext = stack;
243 stack = clients = c;
244 ban(c);
245 XMapWindow(dpy, c->win);
246 XMapWindow(dpy, c->twin);
247 if(isvisible(c))
248 focus(c);
249 arrange();
250}
251
252void
253resize(Client *c, Bool sizehints, Corner sticky) {
254 int bottom = c->y + c->h;
255 int right = c->x + c->w;
256 XWindowChanges wc;
257
258 if(sizehints) {
259 if(c->incw)
260 c->w -= (c->w - c->basew) % c->incw;
261 if(c->inch)
262 c->h -= (c->h - c->baseh) % c->inch;
263 if(c->minw && c->w < c->minw)
264 c->w = c->minw;
265 if(c->minh && c->h < c->minh)
266 c->h = c->minh;
267 if(c->maxw && c->w > c->maxw)
268 c->w = c->maxw;
269 if(c->maxh && c->h > c->maxh)
270 c->h = c->maxh;
271 }
272 if(sticky == TopRight || sticky == BotRight)
273 c->x = right - c->w;
274 if(sticky == BotLeft || sticky == BotRight)
275 c->y = bottom - c->h;
276 /* offscreen appearance fixes */
277 if(c->x + c->w < sx)
278 c->x = sx;
279 if(c->y + c->h < bh)
280 c->y = bh;
281 if(c->x > sw)
282 c->x = sw - c->w;
283 if(c->y > sh)
284 c->y = sh - c->h;
285 resizetitle(c);
286 wc.x = c->x;
287 wc.y = c->y;
288 wc.width = c->w;
289 wc.height = c->h;
290 if(c->w == sw && c->h == sh)
291 wc.border_width = 0;
292 else
293 wc.border_width = BORDERPX;
294 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
295 configure(c);
296 XSync(dpy, False);
297}
298
299void
300resizetitle(Client *c) {
301 c->tw = textw(c->name);
302 if(c->tw > c->w)
303 c->tw = c->w + 2 * BORDERPX;
304 c->tx = c->x + c->w - c->tw + 2 * BORDERPX;
305 c->ty = c->y;
306 if(isvisible(c))
307 XMoveResizeWindow(dpy, c->twin, c->tx, c->ty, c->tw, c->th);
308 else
309 XMoveResizeWindow(dpy, c->twin, c->tx + 2 * sw, c->ty, c->tw, c->th);
310}
311
312void
313updatesize(Client *c) {
314 long msize;
315 XSizeHints size;
316
317 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
318 size.flags = PSize;
319 c->flags = size.flags;
320 if(c->flags & PBaseSize) {
321 c->basew = size.base_width;
322 c->baseh = size.base_height;
323 }
324 else
325 c->basew = c->baseh = 0;
326 if(c->flags & PResizeInc) {
327 c->incw = size.width_inc;
328 c->inch = size.height_inc;
329 }
330 else
331 c->incw = c->inch = 0;
332 if(c->flags & PMaxSize) {
333 c->maxw = size.max_width;
334 c->maxh = size.max_height;
335 }
336 else
337 c->maxw = c->maxh = 0;
338 if(c->flags & PMinSize) {
339 c->minw = size.min_width;
340 c->minh = size.min_height;
341 }
342 else
343 c->minw = c->minh = 0;
344 if(c->flags & PWinGravity)
345 c->grav = size.win_gravity;
346 else
347 c->grav = NorthWestGravity;
348}
349
350void
351updatetitle(Client *c) {
352 char **list = NULL;
353 int n;
354 XTextProperty name;
355
356 name.nitems = 0;
357 c->name[0] = 0;
358 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
359 if(!name.nitems)
360 XGetWMName(dpy, c->win, &name);
361 if(!name.nitems)
362 return;
363 if(name.encoding == XA_STRING)
364 strncpy(c->name, (char *)name.value, sizeof(c->name));
365 else {
366 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
367 && n > 0 && *list)
368 {
369 strncpy(c->name, *list, sizeof(c->name));
370 XFreeStringList(list);
371 }
372 }
373 XFree(name.value);
374}
375
376void
377unmanage(Client *c) {
378 Client *nc;
379
380 /* The server grab construct avoids race conditions. */
381 XGrabServer(dpy);
382 XSetErrorHandler(xerrordummy);
383 detach(c);
384 detachstack(c);
385 if(sel == c) {
386 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
387 focus(nc);
388 }
389 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
390 XDestroyWindow(dpy, c->twin);
391 free(c->tags);
392 free(c);
393 XSync(dpy, False);
394 XSetErrorHandler(xerror);
395 XUngrabServer(dpy);
396 arrange();
397}