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