client.c (view raw)
1/* (C)opyright MMVI-MMVII 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 */
11
12static void
13grabbuttons(Client *c, Bool focused) {
14 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
15
16 if(focused) {
17 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
18 GrabModeAsync, GrabModeSync, None, None);
19 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
20 GrabModeAsync, GrabModeSync, None, None);
21 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
22 GrabModeAsync, GrabModeSync, None, None);
23 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
24 GrabModeAsync, GrabModeSync, None, None);
25
26 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
27 GrabModeAsync, GrabModeSync, None, None);
28 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
29 GrabModeAsync, GrabModeSync, None, None);
30 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
31 GrabModeAsync, GrabModeSync, None, None);
32 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
33 GrabModeAsync, GrabModeSync, None, None);
34
35 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
38 GrabModeAsync, GrabModeSync, None, None);
39 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
40 GrabModeAsync, GrabModeSync, None, None);
41 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
42 GrabModeAsync, GrabModeSync, None, None);
43 }
44 else
45 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
46 GrabModeAsync, GrabModeSync, None, None);
47}
48
49static void
50setclientstate(Client *c, long state) {
51 long data[] = {state, None};
52 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
53 PropModeReplace, (unsigned char *)data, 2);
54}
55
56static int
57xerrordummy(Display *dsply, XErrorEvent *ee) {
58 return 0;
59}
60
61/* extern */
62
63void
64attach(Client *c) {
65 if(clients)
66 clients->prev = c;
67 c->next = clients;
68 clients = c;
69}
70
71void
72attachstack(Client *c) {
73 c->snext = stack;
74 stack = c;
75}
76
77void
78configure(Client *c) {
79 XConfigureEvent ce;
80
81 ce.type = ConfigureNotify;
82 ce.display = dpy;
83 ce.event = c->win;
84 ce.window = c->win;
85 ce.x = c->x;
86 ce.y = c->y;
87 ce.width = c->w;
88 ce.height = c->h;
89 ce.border_width = c->border;
90 ce.above = None;
91 ce.override_redirect = False;
92 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
93}
94
95void
96detach(Client *c) {
97 if(c->prev)
98 c->prev->next = c->next;
99 if(c->next)
100 c->next->prev = c->prev;
101 if(c == clients)
102 clients = c->next;
103 c->next = c->prev = NULL;
104}
105
106void
107detachstack(Client *c) {
108 Client **tc;
109 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
110 *tc = c->snext;
111}
112
113void
114focus(Client *c) {
115 if(c && !isvisible(c))
116 return;
117 if(sel && sel != c) {
118 grabbuttons(sel, False);
119 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
120 }
121 if(c) {
122 detachstack(c);
123 attachstack(c);
124 grabbuttons(c, True);
125 }
126 sel = c;
127 drawstatus();
128 if(!selscreen)
129 return;
130 if(c) {
131 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
132 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
133 }
134 else
135 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
136}
137
138Client *
139getclient(Window w) {
140 Client *c;
141
142 for(c = clients; c; c = c->next)
143 if(c->win == w)
144 return c;
145 return NULL;
146}
147
148Bool
149isprotodel(Client *c) {
150 int i, n;
151 Atom *protocols;
152 Bool ret = False;
153
154 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
155 for(i = 0; !ret && i < n; i++)
156 if(protocols[i] == wmatom[WMDelete])
157 ret = True;
158 XFree(protocols);
159 }
160 return ret;
161}
162
163void
164killclient(Arg *arg) {
165 if(!sel)
166 return;
167 if(isprotodel(sel))
168 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
169 else
170 XKillClient(dpy, sel->win);
171}
172
173void
174manage(Window w, XWindowAttributes *wa) {
175 Client *c, *t;
176 Window trans;
177 XWindowChanges wc;
178
179 c = emallocz(sizeof(Client));
180 c->tags = emallocz(ntags * sizeof(Bool));
181 c->win = w;
182 c->x = wa->x;
183 c->y = wa->y;
184 c->w = wa->width;
185 c->h = wa->height;
186 if(c->w == sw && c->h == sh) {
187 c->border = 0;
188 c->x = sx;
189 c->y = sy;
190 }
191 else {
192 c->border = BORDERPX;
193 if(c->x + c->w + 2 * c->border > wax + waw)
194 c->x = wax + waw - c->w - 2 * c->border;
195 if(c->y + c->h + 2 * c->border > way + wah)
196 c->y = way + wah - c->h - 2 * c->border;
197 if(c->x < wax)
198 c->x = wax;
199 if(c->y < way)
200 c->y = way;
201 }
202 updatesizehints(c);
203 XSelectInput(dpy, c->win,
204 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
205 XGetTransientForHint(dpy, c->win, &trans);
206 grabbuttons(c, False);
207 wc.border_width = c->border;
208 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc);
209 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
210 configure(c); /* propagates border_width, if size doesn't change */
211 updatetitle(c);
212 t = getclient(trans);
213 settags(c, t);
214 if(!c->isfloat)
215 c->isfloat = (t != 0) || c->isfixed;
216 attach(c);
217 attachstack(c);
218 c->isbanned = True;
219 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
220 XMapWindow(dpy, c->win);
221 setclientstate(c, NormalState);
222 if(isvisible(c))
223 focus(c);
224 arrange();
225}
226
227void
228resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
229 float actual, dx, dy, max, min;
230 XWindowChanges wc;
231
232 if(w <= 0 || h <= 0)
233 return;
234 if(sizehints) {
235 if(c->minw && w < c->minw)
236 w = c->minw;
237 if(c->minh && h < c->minh)
238 h = c->minh;
239 if(c->maxw && w > c->maxw)
240 w = c->maxw;
241 if(c->maxh && h > c->maxh)
242 h = c->maxh;
243 /* inspired by algorithm from fluxbox */
244 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
245 dx = (float)(w - c->basew);
246 dy = (float)(h - c->baseh);
247 min = (float)(c->minax) / (float)(c->minay);
248 max = (float)(c->maxax) / (float)(c->maxay);
249 actual = dx / dy;
250 if(max > 0 && min > 0 && actual > 0) {
251 if(actual < min) {
252 dy = (dx * min + dy) / (min * min + 1);
253 dx = dy * min;
254 w = (int)dx + c->basew;
255 h = (int)dy + c->baseh;
256 }
257 else if(actual > max) {
258 dy = (dx * min + dy) / (max * max + 1);
259 dx = dy * min;
260 w = (int)dx + c->basew;
261 h = (int)dy + c->baseh;
262 }
263 }
264 }
265 if(c->incw)
266 w -= (w - c->basew) % c->incw;
267 if(c->inch)
268 h -= (h - c->baseh) % c->inch;
269 }
270 if(w == sw && h == sh)
271 c->border = 0;
272 else
273 c->border = BORDERPX;
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
296updatesizehints(Client *c) {
297 long msize;
298 XSizeHints size;
299
300 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
301 size.flags = PSize;
302 c->flags = size.flags;
303 if(c->flags & PBaseSize) {
304 c->basew = size.base_width;
305 c->baseh = size.base_height;
306 }
307 else
308 c->basew = c->baseh = 0;
309 if(c->flags & PResizeInc) {
310 c->incw = size.width_inc;
311 c->inch = size.height_inc;
312 }
313 else
314 c->incw = c->inch = 0;
315 if(c->flags & PMaxSize) {
316 c->maxw = size.max_width;
317 c->maxh = size.max_height;
318 }
319 else
320 c->maxw = c->maxh = 0;
321 if(c->flags & PMinSize) {
322 c->minw = size.min_width;
323 c->minh = size.min_height;
324 }
325 else
326 c->minw = c->minh = 0;
327 if(c->flags & PAspect) {
328 c->minax = size.min_aspect.x;
329 c->minay = size.min_aspect.y;
330 c->maxax = size.max_aspect.x;
331 c->maxay = size.max_aspect.y;
332 }
333 else
334 c->minax = c->minay = c->maxax = c->maxay = 0;
335 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
336 && c->maxw == c->minw && c->maxh == c->minh);
337}
338
339void
340updatetitle(Client *c) {
341 char **list = NULL;
342 int n;
343 XTextProperty name;
344
345 name.nitems = 0;
346 c->name[0] = 0;
347 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
348 if(!name.nitems)
349 XGetWMName(dpy, c->win, &name);
350 if(!name.nitems)
351 return;
352 if(name.encoding == XA_STRING)
353 strncpy(c->name, (char *)name.value, sizeof c->name);
354 else {
355 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
356 && n > 0 && *list)
357 {
358 strncpy(c->name, *list, sizeof c->name);
359 XFreeStringList(list);
360 }
361 }
362 XFree(name.value);
363}
364
365void
366unmanage(Client *c) {
367 Client *nc;
368
369 /* The server grab construct avoids race conditions. */
370 XGrabServer(dpy);
371 XSetErrorHandler(xerrordummy);
372 detach(c);
373 detachstack(c);
374 if(sel == c) {
375 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
376 focus(nc);
377 }
378 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
379 setclientstate(c, WithdrawnState);
380 free(c->tags);
381 free(c);
382 XSync(dpy, False);
383 XSetErrorHandler(xerror);
384 XUngrabServer(dpy);
385 arrange();
386}