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
162 c = emallocz(sizeof(Client));
163 c->tags = emallocz(ntags * sizeof(Bool));
164 c->win = w;
165 c->x = wa->x;
166 c->y = wa->y;
167 c->w = wa->width;
168 c->h = wa->height;
169 if(c->w == sw && c->h == sh) {
170 c->border = 0;
171 c->x = sx;
172 c->y = sy;
173 }
174 else {
175 c->border = BORDERPX;
176 if(c->x + c->w + 2 * c->border > wax + waw)
177 c->x = wax + waw - c->w - 2 * c->border;
178 if(c->y + c->h + 2 * c->border > way + wah)
179 c->y = way + wah - c->h - 2 * c->border;
180 if(c->x < wax)
181 c->x = wax;
182 if(c->y < way)
183 c->y = way;
184 }
185 updatesizehints(c);
186 XSelectInput(dpy, c->win,
187 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
188 XGetTransientForHint(dpy, c->win, &trans);
189 grabbuttons(c, False);
190 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
191 updatetitle(c);
192 t = getclient(trans);
193 settags(c, t);
194 if(!c->isfloat)
195 c->isfloat = (t != 0) || c->isfixed;
196 if(clients)
197 clients->prev = c;
198 c->next = clients;
199 c->snext = stack;
200 stack = clients = c;
201 ban(c);
202 XMapWindow(dpy, c->win);
203 setclientstate(c, NormalState);
204 if(isvisible(c))
205 focus(c);
206 arrange();
207}
208
209void
210resize(Client *c, Bool sizehints) {
211 float actual, dx, dy, max, min;
212 XWindowChanges wc;
213
214 if(c->w <= 0 || c->h <= 0)
215 return;
216 if(sizehints) {
217 if(c->minw && c->w < c->minw)
218 c->w = c->minw;
219 if(c->minh && c->h < c->minh)
220 c->h = c->minh;
221 if(c->maxw && c->w > c->maxw)
222 c->w = c->maxw;
223 if(c->maxh && c->h > c->maxh)
224 c->h = c->maxh;
225 /* inspired by algorithm from fluxbox */
226 if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
227 dx = (float)(c->w - c->basew);
228 dy = (float)(c->h - c->baseh);
229 min = (float)(c->minax) / (float)(c->minay);
230 max = (float)(c->maxax) / (float)(c->maxay);
231 actual = dx / dy;
232 if(max > 0 && min > 0 && actual > 0) {
233 if(actual < min) {
234 dy = (dx * min + dy) / (min * min + 1);
235 dx = dy * min;
236 c->w = (int)dx + c->basew;
237 c->h = (int)dy + c->baseh;
238 }
239 else if(actual > max) {
240 dy = (dx * min + dy) / (max * max + 1);
241 dx = dy * min;
242 c->w = (int)dx + c->basew;
243 c->h = (int)dy + c->baseh;
244 }
245 }
246 }
247 if(c->incw)
248 c->w -= (c->w - c->basew) % c->incw;
249 if(c->inch)
250 c->h -= (c->h - c->baseh) % c->inch;
251 }
252 if(c->w == sw && c->h == sh)
253 c->border = 0;
254 else
255 c->border = BORDERPX;
256 /* offscreen appearance fixes */
257 if(c->x > sw)
258 c->x = sw - c->w - 2 * c->border;
259 if(c->y > sh)
260 c->y = sh - c->h - 2 * c->border;
261 if(c->x + c->w + 2 * c->border < sx)
262 c->x = sx;
263 if(c->y + c->h + 2 * c->border < sy)
264 c->y = sy;
265 wc.x = c->x;
266 wc.y = c->y;
267 wc.width = c->w;
268 wc.height = c->h;
269 wc.border_width = c->border;
270 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
271 configure(c);
272 XSync(dpy, False);
273}
274
275void
276updatesizehints(Client *c) {
277 long msize;
278 XSizeHints size;
279
280 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
281 size.flags = PSize;
282 c->flags = size.flags;
283 if(c->flags & PBaseSize) {
284 c->basew = size.base_width;
285 c->baseh = size.base_height;
286 }
287 else
288 c->basew = c->baseh = 0;
289 if(c->flags & PResizeInc) {
290 c->incw = size.width_inc;
291 c->inch = size.height_inc;
292 }
293 else
294 c->incw = c->inch = 0;
295 if(c->flags & PMaxSize) {
296 c->maxw = size.max_width;
297 c->maxh = size.max_height;
298 }
299 else
300 c->maxw = c->maxh = 0;
301 if(c->flags & PMinSize) {
302 c->minw = size.min_width;
303 c->minh = size.min_height;
304 }
305 else
306 c->minw = c->minh = 0;
307 if(c->flags & PAspect) {
308 c->minax = size.min_aspect.x;
309 c->minay = size.min_aspect.y;
310 c->maxax = size.max_aspect.x;
311 c->maxay = size.max_aspect.y;
312 }
313 else
314 c->minax = c->minay = c->maxax = c->maxay = 0;
315 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
316 && c->maxw == c->minw && c->maxh == c->minh);
317}
318
319void
320updatetitle(Client *c) {
321 char **list = NULL;
322 int n;
323 XTextProperty name;
324
325 name.nitems = 0;
326 c->name[0] = 0;
327 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
328 if(!name.nitems)
329 XGetWMName(dpy, c->win, &name);
330 if(!name.nitems)
331 return;
332 if(name.encoding == XA_STRING)
333 strncpy(c->name, (char *)name.value, sizeof c->name);
334 else {
335 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
336 && n > 0 && *list)
337 {
338 strncpy(c->name, *list, sizeof c->name);
339 XFreeStringList(list);
340 }
341 }
342 XFree(name.value);
343}
344
345void
346unmanage(Client *c) {
347 Client *nc;
348
349 /* The server grab construct avoids race conditions. */
350 XGrabServer(dpy);
351 XSetErrorHandler(xerrordummy);
352 detach(c);
353 detachstack(c);
354 if(sel == c) {
355 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
356 focus(nc);
357 }
358 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
359 setclientstate(c, WithdrawnState);
360 free(c->tags);
361 free(c);
362 XSync(dpy, False);
363 XSetErrorHandler(xerror);
364 XUngrabServer(dpy);
365 arrange();
366}