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
100configure(Client *c) {
101 XConfigureEvent ce;
102
103 ce.type = ConfigureNotify;
104 ce.display = dpy;
105 ce.event = c->win;
106 ce.window = c->win;
107 ce.x = c->x;
108 ce.y = c->y;
109 ce.width = c->w;
110 ce.height = c->h;
111 ce.border_width = c->border;
112 ce.above = None;
113 ce.override_redirect = False;
114 XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
115}
116
117void
118detach(Client *c) {
119 if(c->prev)
120 c->prev->next = c->next;
121 if(c->next)
122 c->next->prev = c->prev;
123 if(c == clients)
124 clients = c->next;
125 c->next = c->prev = NULL;
126}
127
128void
129focus(Client *c) {
130 if((!c && selscreen)|| (c && !isvisible(c)))
131 for(c = stack; c && !isvisible(c); c = c->snext);
132 if(sel && sel != c) {
133 grabbuttons(sel, False);
134 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
135 }
136 if(c) {
137 detachstack(c);
138 attachstack(c);
139 grabbuttons(c, True);
140 }
141 sel = c;
142 drawstatus();
143 if(!selscreen)
144 return;
145 if(c) {
146 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
147 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
148 }
149 else
150 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
151}
152
153void
154killclient(const char *arg) {
155 XEvent ev;
156
157 if(!sel)
158 return;
159 if(isprotodel(sel)) {
160 ev.type = ClientMessage;
161 ev.xclient.window = sel->win;
162 ev.xclient.message_type = wmatom[WMProtocols];
163 ev.xclient.format = 32;
164 ev.xclient.data.l[0] = wmatom[WMDelete];
165 ev.xclient.data.l[1] = CurrentTime;
166 XSendEvent(dpy, sel->win, False, NoEventMask, &ev);
167 }
168 else
169 XKillClient(dpy, sel->win);
170}
171
172void
173manage(Window w, XWindowAttributes *wa) {
174 Client *c, *t = NULL;
175 Window trans;
176 Status rettrans;
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 c->oldborder = wa->border_width;
187 if(c->w == sw && c->h == sh) {
188 c->x = sx;
189 c->y = sy;
190 c->border = wa->border_width;
191 }
192 else {
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 c->border = BORDERPX;
202 }
203 wc.border_width = c->border;
204 XConfigureWindow(dpy, w, CWBorderWidth, &wc);
205 XSetWindowBorder(dpy, w, dc.norm[ColBorder]);
206 configure(c); /* propagates border_width, if size doesn't change */
207 updatesizehints(c);
208 XSelectInput(dpy, w,
209 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
210 grabbuttons(c, False);
211 updatetitle(c);
212 if((rettrans = XGetTransientForHint(dpy, w, &trans) == Success))
213 for(t = clients; t && t->win != trans; t = t->next);
214 settags(c, t);
215 if(!c->isfloating)
216 c->isfloating = (rettrans == Success) || c->isfixed;
217 attach(c);
218 attachstack(c);
219 c->isbanned = True;
220 XMoveWindow(dpy, w, c->x + 2 * sw, c->y);
221 XMapWindow(dpy, w);
222 setclientstate(c, NormalState);
223 focus(c);
224 lt->arrange();
225}
226
227void
228resize(Client *c, int x, int y, int w, int h, Bool sizehints) {
229 float dx, dy, max, min, ratio;
230 XWindowChanges wc;
231
232 if(w <= 0 || h <= 0)
233 return;
234 if(sizehints) {
235 if(c->minay > 0 && c->maxay > 0 && (h - c->baseh) > 0) {
236 dx = (float)(w - c->basew);
237 dy = (float)(h - c->baseh);
238 min = (float)(c->minax) / (float)(c->minay);
239 max = (float)(c->maxax) / (float)(c->maxay);
240 ratio = dx / dy;
241 if(max > 0 && min > 0 && ratio > 0) {
242 if(ratio < min) {
243 dy = (dx * min + dy) / (min * min + 1);
244 dx = dy * min;
245 w = (int)dx + c->basew;
246 h = (int)dy + c->baseh;
247 }
248 else if(ratio > max) {
249 dy = (dx * min + dy) / (max * max + 1);
250 dx = dy * min;
251 w = (int)dx + c->basew;
252 h = (int)dy + c->baseh;
253 }
254 }
255 }
256 if(c->minw && w < c->minw)
257 w = c->minw;
258 if(c->minh && h < c->minh)
259 h = c->minh;
260 if(c->maxw && w > c->maxw)
261 w = c->maxw;
262 if(c->maxh && h > c->maxh)
263 h = c->maxh;
264 if(c->incw)
265 w -= (w - c->basew) % c->incw;
266 if(c->inch)
267 h -= (h - c->baseh) % c->inch;
268 }
269 if(w <= 0 || h <= 0)
270 return;
271 /* offscreen appearance fixes */
272 if(x > sw)
273 x = sw - w - 2 * c->border;
274 if(y > sh)
275 y = sh - h - 2 * c->border;
276 if(x + w + 2 * c->border < sx)
277 x = sx;
278 if(y + h + 2 * c->border < sy)
279 y = sy;
280 if(c->x != x || c->y != y || c->w != w || c->h != h) {
281 c->x = wc.x = x;
282 c->y = wc.y = y;
283 c->w = wc.width = w;
284 c->h = wc.height = h;
285 wc.border_width = c->border;
286 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
287 configure(c);
288 XSync(dpy, False);
289 }
290}
291
292void
293togglefloating(const char *arg) {
294 if(!sel || lt->arrange == floating)
295 return;
296 sel->isfloating = !sel->isfloating;
297 if(sel->isfloating)
298 resize(sel, sel->x, sel->y, sel->w, sel->h, True);
299 lt->arrange();
300}
301
302void
303updatesizehints(Client *c) {
304 long msize;
305 XSizeHints size;
306
307 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
308 size.flags = PSize;
309 c->flags = size.flags;
310 if(c->flags & PBaseSize) {
311 c->basew = size.base_width;
312 c->baseh = size.base_height;
313 }
314 else if(c->flags & PMinSize) {
315 c->basew = size.min_width;
316 c->baseh = size.min_height;
317 }
318 else
319 c->basew = c->baseh = 0;
320 if(c->flags & PResizeInc) {
321 c->incw = size.width_inc;
322 c->inch = size.height_inc;
323 }
324 else
325 c->incw = c->inch = 0;
326 if(c->flags & PMaxSize) {
327 c->maxw = size.max_width;
328 c->maxh = size.max_height;
329 }
330 else
331 c->maxw = c->maxh = 0;
332 if(c->flags & PMinSize) {
333 c->minw = size.min_width;
334 c->minh = size.min_height;
335 }
336 else if(c->flags & PBaseSize) {
337 c->minw = size.base_width;
338 c->minh = size.base_height;
339 }
340 else
341 c->minw = c->minh = 0;
342 if(c->flags & PAspect) {
343 c->minax = size.min_aspect.x;
344 c->maxax = size.max_aspect.x;
345 c->minay = size.min_aspect.y;
346 c->maxay = size.max_aspect.y;
347 }
348 else
349 c->minax = c->maxax = c->minay = c->maxay = 0;
350 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh
351 && c->maxw == c->minw && c->maxh == c->minh);
352}
353
354void
355updatetitle(Client *c) {
356 char **list = NULL;
357 int n;
358 XTextProperty name;
359
360 name.nitems = 0;
361 c->name[0] = 0;
362 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
363 if(!name.nitems)
364 XGetWMName(dpy, c->win, &name);
365 if(!name.nitems)
366 return;
367 if(name.encoding == XA_STRING)
368 strncpy(c->name, (char *)name.value, sizeof c->name - 1);
369 else {
370 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
371 && n > 0 && *list)
372 {
373 strncpy(c->name, *list, sizeof c->name - 1);
374 XFreeStringList(list);
375 }
376 }
377 c->name[sizeof c->name - 1] = '\0';
378 XFree(name.value);
379}
380
381void
382unmanage(Client *c) {
383 XWindowChanges wc;
384
385 wc.border_width = c->oldborder;
386 /* The server grab construct avoids race conditions. */
387 XGrabServer(dpy);
388 XSetErrorHandler(xerrordummy);
389 XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
390 detach(c);
391 detachstack(c);
392 if(sel == c)
393 focus(NULL);
394 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
395 setclientstate(c, WithdrawnState);
396 free(c->tags);
397 free(c);
398 XSync(dpy, False);
399 XSetErrorHandler(xerror);
400 XUngrabServer(dpy);
401 lt->arrange();
402}