client.c (view raw)
1/* See LICENSE file for copyright and license details. */
2#include "dwm.h"
3#include <stdlib.h>
4#include <string.h>
5#include <X11/Xatom.h>
6#include <X11/Xutil.h>
7
8/* static */
9
10static void
11attachstack(Client *c) {
12 c->snext = stack;
13 stack = c;
14}
15
16static void
17detachstack(Client *c) {
18 Client **tc;
19
20 for(tc=&stack; *tc && *tc != c; tc=&(*tc)->snext);
21 *tc = c->snext;
22}
23
24static void
25grabbuttons(Client *c, Bool focused) {
26 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
27
28 if(focused) {
29 XGrabButton(dpy, Button1, MODKEY, c->win, False, BUTTONMASK,
30 GrabModeAsync, GrabModeSync, None, None);
31 XGrabButton(dpy, Button1, MODKEY | LockMask, c->win, False, BUTTONMASK,
32 GrabModeAsync, GrabModeSync, None, None);
33 XGrabButton(dpy, Button1, MODKEY | numlockmask, c->win, False, BUTTONMASK,
34 GrabModeAsync, GrabModeSync, None, None);
35 XGrabButton(dpy, Button1, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
36 GrabModeAsync, GrabModeSync, None, None);
37
38 XGrabButton(dpy, Button2, MODKEY, c->win, False, BUTTONMASK,
39 GrabModeAsync, GrabModeSync, None, None);
40 XGrabButton(dpy, Button2, MODKEY | LockMask, c->win, False, BUTTONMASK,
41 GrabModeAsync, GrabModeSync, None, None);
42 XGrabButton(dpy, Button2, MODKEY | numlockmask, c->win, False, BUTTONMASK,
43 GrabModeAsync, GrabModeSync, None, None);
44 XGrabButton(dpy, Button2, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
45 GrabModeAsync, GrabModeSync, None, None);
46
47 XGrabButton(dpy, Button3, MODKEY, c->win, False, BUTTONMASK,
48 GrabModeAsync, GrabModeSync, None, None);
49 XGrabButton(dpy, Button3, MODKEY | LockMask, c->win, False, BUTTONMASK,
50 GrabModeAsync, GrabModeSync, None, None);
51 XGrabButton(dpy, Button3, MODKEY | numlockmask, c->win, False, BUTTONMASK,
52 GrabModeAsync, GrabModeSync, None, None);
53 XGrabButton(dpy, Button3, MODKEY | numlockmask | LockMask, c->win, False, BUTTONMASK,
54 GrabModeAsync, GrabModeSync, None, None);
55 }
56 else
57 XGrabButton(dpy, AnyButton, AnyModifier, c->win, False, BUTTONMASK,
58 GrabModeAsync, GrabModeSync, None, None);
59}
60
61static Bool
62isprotodel(Client *c) {
63 int i, n;
64 Atom *protocols;
65 Bool ret = False;
66
67 if(XGetWMProtocols(dpy, c->win, &protocols, &n)) {
68 for(i = 0; !ret && i < n; i++)
69 if(protocols[i] == wmatom[WMDelete])
70 ret = True;
71 XFree(protocols);
72 }
73 return ret;
74}
75
76static void
77setclientstate(Client *c, long state) {
78 long data[] = {state, None};
79
80 XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
81 PropModeReplace, (unsigned char *)data, 2);
82}
83
84static int
85xerrordummy(Display *dsply, XErrorEvent *ee) {
86 return 0;
87}
88
89/* extern */
90
91void
92attach(Client *c) {
93 if(clients)
94 clients->prev = c;
95 c->next = clients;
96 clients = c;
97}
98
99void
100ban(Client *c) {
101 if (c->isbanned)
102 return;
103 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
104 c->isbanned = True;
105}
106
107void
108configure(Client *c) {
109 XConfigureEvent ce;
110
111 ce.type = ConfigureNotify;
112 ce.display = dpy;
113 ce.event = c->win;
114 ce.window = c->win;
115 ce.x = c->x;
116 ce.y = c->y;
117 ce.width = c->w;
118 ce.height = c->h;
119 ce.border_width = c->border;
120 ce.above = None;
121 ce.override_redirect = False;
122 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
123}
124
125void
126detach(Client *c) {
127 if(c->prev)
128 c->prev->next = c->next;
129 if(c->next)
130 c->next->prev = c->prev;
131 if(c == clients)
132 clients = c->next;
133 c->next = c->prev = NULL;
134}
135
136void
137focus(Client *c) {
138 if((!c && selscreen)|| (c && !isvisible(c)))
139 for(c = stack; c && !isvisible(c); c = c->snext);
140 if(sel && sel != c) {
141 grabbuttons(sel, False);
142 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
143 }
144 if(c) {
145 detachstack(c);
146 attachstack(c);
147 grabbuttons(c, True);
148 }
149 sel = c;
150 drawstatus();
151 if(!selscreen)
152 return;
153 if(c) {
154 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
155 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
156 }
157 else
158 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
159}
160
161void
162killclient(const char *arg) {
163 XEvent ev;
164
165 if(!sel)
166 return;
167 if(isprotodel(sel)) {
168 ev.type = ClientMessage;
169 ev.xclient.window = sel->win;
170 ev.xclient.message_type = wmatom[WMProtocols];
171 ev.xclient.format = 32;
172 ev.xclient.data.l[0] = wmatom[WMDelete];
173 ev.xclient.data.l[1] = CurrentTime;
174 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
175 }
176 else
177 XKillClient(dpy, sel->win);
178}
179
180void
181manage(Window w, XWindowAttributes *wa) {
182 Client *c, *t = NULL;
183 Window trans;
184 Status rettrans;
185 XWindowChanges wc;
186
187 c = emallocz(sizeof(Client));
188 c->tags = emallocz(ntags * sizeof(Bool));
189 c->win = w;
190 c->x = wa->x;
191 c->y = wa->y;
192 c->w = wa->width;
193 c->h = wa->height;
194 c->oldborder = wa->border_width;
195 if(c->w == sw && c->h == sh) {
196 c->x = sx;
197 c->y = sy;
198 c->border = wa->border_width;
199 }
200 else {
201 if(c->x + c->w + 2 * c->border > wax + waw)
202 c->x = wax + waw - c->w - 2 * c->border;
203 if(c->y + c->h + 2 * c->border > way + wah)
204 c->y = way + wah - c->h - 2 * c->border;
205 if(c->x < wax)
206 c->x = wax;
207 if(c->y < way)
208 c->y = way;
209 c->border = BORDERPX;
210 }
211 wc.border_width = c->border;
212 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
213 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
214 configure(c); /* propagates border_width, if size doesn't change */
215 updatesizehints(c);
216 XSelectInput(dpy, w,
217 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
218 grabbuttons(c, False);
219 updatetitle(c);
220 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
221 for(t = clients; t && t->win != trans; t = t->next);
222 settags(c, t);
223 if(!c->isfloating)
224 c->isfloating = (rettrans == Success) || c->isfixed;
225 attach(c);
226 attachstack(c);
227 ban(c);
228 XMapWindow(dpy, w);
229 setclientstate(c, NormalState);
230 focus(c);
231 lt->arrange();
232}
233
234void
235resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
236 float dx, dy, max, min, ratio;
237 XWindowChanges wc;
238
239 if(w <= 0 || h <= 0)
240 return;
241 if(sizehints) {
242 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
243 dx = (float)(w - c->basew);
244 dy = (float)(h - c->baseh);
245 min = (float)(c->minax) / (float)(c->minay);
246 max = (float)(c->maxax) / (float)(c->maxay);
247 ratio = dx / dy;
248 if(max > 0 && min > 0 && ratio > 0) {
249 if(ratio < min) {
250 dy = (dx * min + dy) / (min * min + 1);
251 dx = dy * min;
252 w = (int)dx + c->basew;
253 h = (int)dy + c->baseh;
254 }
255 else if(ratio > max) {
256 dy = (dx * min + dy) / (max * max + 1);
257 dx = dy * min;
258 w = (int)dx + c->basew;
259 h = (int)dy + c->baseh;
260 }
261 }
262 }
263 if(c->minw && w < c->minw)
264 w = c->minw;
265 if(c->minh && h < c->minh)
266 h = c->minh;
267 if(c->maxw && w > c->maxw)
268 w = c->maxw;
269 if(c->maxh && h > c->maxh)
270 h = c->maxh;
271 if(c->incw)
272 w -= (w - c->basew) % c->incw;
273 if(c->inch)
274 h -= (h - c->baseh) % c->inch;
275 }
276 if(w <= 0 || h <= 0)
277 return;
278 /* offscreen appearance fixes */
279 if(x > sw)
280 x = sw - w - 2 * c->border;
281 if(y > sh)
282 y = sh - h - 2 * c->border;
283 if(x + w + 2 * c->border < sx)
284 x = sx;
285 if(y + h + 2 * c->border < sy)
286 y = sy;
287 if(c->x != x || c->y != y || c->w != w || c->h != h) {
288 c->x = wc.x = x;
289 c->y = wc.y = y;
290 c->w = wc.width = w;
291 c->h = wc.height = h;
292 wc.border_width = c->border;
293 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
294 configure(c);
295 XSync(dpy, False);
296 }
297}
298
299void
300togglefloating(const char *arg) {
301 if(!sel || lt->arrange == floating)
302 return;
303 sel->isfloating = !sel->isfloating;
304 if(sel->isfloating)
305 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
306 lt->arrange();
307}
308
309void
310unban(Client *c) {
311 if (!c->isbanned)
312 return;
313 XMoveWindow(dpy, c->win, c->x, c->y);
314 c->isbanned = False;
315}
316
317void
318unmanage(Client *c) {
319 XWindowChanges wc;
320
321 wc.border_width = c->oldborder;
322 /* The server grab construct avoids race conditions. */
323 XGrabServer(dpy);
324 XSetErrorHandler(xerrordummy);
325 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
326 detach(c);
327 detachstack(c);
328 if(sel == c)
329 focus(NULL);
330 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
331 setclientstate(c, WithdrawnState);
332 free(c->tags);
333 free(c);
334 XSync(dpy, False);
335 XSetErrorHandler(xerror);
336 XUngrabServer(dpy);
337 lt->arrange();
338}
339
340void
341updatesizehints(Client *c) {
342 long msize;
343 XSizeHints size;
344
345 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
346 size.flags = PSize;
347 c->flags = size.flags;
348 if(c->flags & PBaseSize) {
349 c->basew = size.base_width;
350 c->baseh = size.base_height;
351 }
352 else if(c->flags & PMinSize) {
353 c->basew = size.min_width;
354 c->baseh = size.min_height;
355 }
356 else
357 c->basew = c->baseh = 0;
358 if(c->flags & PResizeInc) {
359 c->incw = size.width_inc;
360 c->inch = size.height_inc;
361 }
362 else
363 c->incw = c->inch = 0;
364 if(c->flags & PMaxSize) {
365 c->maxw = size.max_width;
366 c->maxh = size.max_height;
367 }
368 else
369 c->maxw = c->maxh = 0;
370 if(c->flags & PMinSize) {
371 c->minw = size.min_width;
372 c->minh = size.min_height;
373 }
374 else if(c->flags & PBaseSize) {
375 c->minw = size.base_width;
376 c->minh = size.base_height;
377 }
378 else
379 c->minw = c->minh = 0;
380 if(c->flags & PAspect) {
381 c->minax = size.min_aspect.x;
382 c->maxax = size.max_aspect.x;
383 c->minay = size.min_aspect.y;
384 c->maxay = size.max_aspect.y;
385 }
386 else
387 c->minax = c->maxax = c->minay = c->maxay = 0;
388 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
389 && c->maxw == c->minw && c->maxh == c->minh);
390}
391
392void
393updatetitle(Client *c) {
394 char **list = NULL;
395 int n;
396 XTextProperty name;
397
398 name.nitems = 0;
399 c->name[0] = 0;
400 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
401 if(!name.nitems)
402 XGetWMName(dpy, c->win, &name);
403 if(!name.nitems)
404 return;
405 if(name.encoding == XA_STRING)
406 strncpy(c->name, (char *)name.value, sizeof c->name - 1);
407 else {
408 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
409 && n > 0 && *list)
410 {
411 strncpy(c->name, *list, sizeof c->name - 1);
412 XFreeStringList(list);
413 }
414 }
415 c->name[sizeof c->name - 1] = '\0';
416 XFree(name.value);
417}