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
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 void
57setclientstate(Client *c, long state) {
58 long data[] = {state, None};
59 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
60 PropModeReplace, (unsigned char *)data, 2);
61}
62
63static int
64xerrordummy(Display *dsply, XErrorEvent *ee) {
65 return 0;
66}
67
68/* extern */
69
70void
71ban(Client *c) {
72 if(!c || c->isbanned)
73 return;
74 c->isbanned = True;
75 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
76}
77
78void
79configure(Client *c) {
80 XConfigureEvent ce;
81
82 ce.type = ConfigureNotify;
83 ce.display = dpy;
84 ce.event = c->win;
85 ce.window = c->win;
86 ce.x = c->x;
87 ce.y = c->y;
88 ce.width = c->w;
89 ce.height = c->h;
90 ce.border_width = c->border;
91 ce.above = None;
92 ce.override_redirect = False;
93 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
94}
95
96void
97focus(Client *c) {
98 if(c && !isvisible(c))
99 return;
100 if(sel && sel != c) {
101 grabbuttons(sel, False);
102 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
103 }
104 if(c) {
105 detachstack(c);
106 c->snext = stack;
107 stack = c;
108 grabbuttons(c, True);
109 }
110 sel = c;
111 drawstatus();
112 if(!selscreen)
113 return;
114 if(c) {
115 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
116 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
117 }
118 else
119 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
120}
121
122Client *
123getclient(Window w) {
124 Client *c;
125
126 for(c = clients; c; c = c->next)
127 if(c->win == w)
128 return c;
129 return NULL;
130}
131
132Bool
133isprotodel(Client *c) {
134 int i, n;
135 Atom *protocols;
136 Bool ret = False;
137
138 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
139 for(i = 0; !ret && i < n; i++)
140 if(protocols[i] == wmatom[WMDelete])
141 ret = True;
142 XFree(protocols);
143 }
144 return ret;
145}
146
147void
148killclient(Arg *arg) {
149 if(!sel)
150 return;
151 if(isprotodel(sel))
152 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
153 else
154 XKillClient(dpy, sel->win);
155}
156
157void
158manage(Window w, XWindowAttributes *wa) {
159 Client *c, *t;
160 Window trans;
161 XWindowChanges wc;
162
163 c = emallocz(sizeof(Client));
164 c->tags = emallocz(ntags * sizeof(Bool));
165 c->win = w;
166 c->x = wa->x;
167 c->y = wa->y;
168 c->w = wa->width;
169 c->h = wa->height;
170 if(c->w == sw && c->h == sh) {
171 c->border = 0;
172 c->x = sx;
173 c->y = sy;
174 }
175 else {
176 c->border = BORDERPX;
177 if(c->x + c->w + 2 * c->border > wax + waw)
178 c->x = wax + waw - c->w - 2 * c->border;
179 if(c->y + c->h + 2 * c->border > way + wah)
180 c->y = way + wah - c->h - 2 * c->border;
181 if(c->x < wax)
182 c->x = wax;
183 if(c->y < way)
184 c->y = way;
185 }
186 updatesizehints(c);
187 XSelectInput(dpy, c->win,
188 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
189 XGetTransientForHint(dpy, c->win, &trans);
190 grabbuttons(c, False);
191 wc.border_width = c->border;
192 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc);
193 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
194 configure(c); /* propagates border_width, if size doesn't change */
195 updatetitle(c);
196 t = getclient(trans);
197 settags(c, t);
198 if(!c->isfloat)
199 c->isfloat = (t != 0) || c->isfixed;
200 if(clients)
201 clients->prev = c;
202 c->next = clients;
203 c->snext = stack;
204 stack = clients = c;
205 c->isbanned = True;
206 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
207 XMapWindow(dpy, c->win);
208 setclientstate(c, NormalState);
209 if(isvisible(c))
210 focus(c);
211 arrange();
212}
213
214void
215resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
216 float actual, dx, dy, max, min;
217 XWindowChanges wc;
218
219 if(w <= 0 || h <= 0)
220 return;
221 if(sizehints) {
222 if(c->minw && w < c->minw)
223 w = c->minw;
224 if(c->minh && h < c->minh)
225 h = c->minh;
226 if(c->maxw && w > c->maxw)
227 w = c->maxw;
228 if(c->maxh && h > c->maxh)
229 h = c->maxh;
230 /* inspired by algorithm from fluxbox */
231 if(c->minay > 0 && c->maxay && (h - c->baseh) > 0) {
232 dx = (float)(w - c->basew);
233 dy = (float)(h - c->baseh);
234 min = (float)(c->minax) / (float)(c->minay);
235 max = (float)(c->maxax) / (float)(c->maxay);
236 actual = dx / dy;
237 if(max > 0 && min > 0 && actual > 0) {
238 if(actual < min) {
239 dy = (dx * min + dy) / (min * min + 1);
240 dx = dy * min;
241 w = (int)dx + c->basew;
242 h = (int)dy + c->baseh;
243 }
244 else if(actual > max) {
245 dy = (dx * min + dy) / (max * max + 1);
246 dx = dy * min;
247 w = (int)dx + c->basew;
248 h = (int)dy + c->baseh;
249 }
250 }
251 }
252 if(c->incw)
253 w -= (w - c->basew) % c->incw;
254 if(c->inch)
255 h -= (h - c->baseh) % c->inch;
256 }
257 if(w == sw && h == sh)
258 c->border = 0;
259 else
260 c->border = BORDERPX;
261 /* offscreen appearance fixes */
262 if(x > sw)
263 x = sw - w - 2 * c->border;
264 if(y > sh)
265 y = sh - h - 2 * c->border;
266 if(x + w + 2 * c->border < sx)
267 x = sx;
268 if(y + h + 2 * c->border < sy)
269 y = sy;
270 if(c->x != x || c->y != y || c->w != w || c->h != h) {
271 c->x = wc.x = x;
272 c->y = wc.y = y;
273 c->w = wc.width = w;
274 c->h = wc.height = h;
275 wc.border_width = c->border;
276 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
277 configure(c);
278 XSync(dpy, False);
279 }
280}
281
282void
283updatesizehints(Client *c) {
284 long msize;
285 XSizeHints size;
286
287 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
288 size.flags = PSize;
289 c->flags = size.flags;
290 if(c->flags & PBaseSize) {
291 c->basew = size.base_width;
292 c->baseh = size.base_height;
293 }
294 else
295 c->basew = c->baseh = 0;
296 if(c->flags & PResizeInc) {
297 c->incw = size.width_inc;
298 c->inch = size.height_inc;
299 }
300 else
301 c->incw = c->inch = 0;
302 if(c->flags & PMaxSize) {
303 c->maxw = size.max_width;
304 c->maxh = size.max_height;
305 }
306 else
307 c->maxw = c->maxh = 0;
308 if(c->flags & PMinSize) {
309 c->minw = size.min_width;
310 c->minh = size.min_height;
311 }
312 else
313 c->minw = c->minh = 0;
314 if(c->flags & PAspect) {
315 c->minax = size.min_aspect.x;
316 c->minay = size.min_aspect.y;
317 c->maxax = size.max_aspect.x;
318 c->maxay = size.max_aspect.y;
319 }
320 else
321 c->minax = c->minay = c->maxax = c->maxay = 0;
322 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
323 && c->maxw == c->minw && c->maxh == c->minh);
324}
325
326void
327updatetitle(Client *c) {
328 char **list = NULL;
329 int n;
330 XTextProperty name;
331
332 name.nitems = 0;
333 c->name[0] = 0;
334 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
335 if(!name.nitems)
336 XGetWMName(dpy, c->win, &name);
337 if(!name.nitems)
338 return;
339 if(name.encoding == XA_STRING)
340 strncpy(c->name, (char *)name.value, sizeof c->name);
341 else {
342 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
343 && n > 0 && *list)
344 {
345 strncpy(c->name, *list, sizeof c->name);
346 XFreeStringList(list);
347 }
348 }
349 XFree(name.value);
350}
351
352void
353unmanage(Client *c) {
354 Client *nc;
355
356 /* The server grab construct avoids race conditions. */
357 XGrabServer(dpy);
358 XSetErrorHandler(xerrordummy);
359 detach(c);
360 detachstack(c);
361 if(sel == c) {
362 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
363 focus(nc);
364 }
365 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
366 setclientstate(c, WithdrawnState);
367 free(c->tags);
368 free(c);
369 XSync(dpy, False);
370 XSetErrorHandler(xerror);
371 XUngrabServer(dpy);
372 arrange();
373}