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