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;
152 Window trans;
153
154 c = emallocz(sizeof(Client));
155 c->tags = emallocz(ntags * sizeof(Bool));
156 c->win = w;
157 c->x = wa->x;
158 c->y = wa->y;
159 c->w = wa->width;
160 c->h = wa->height;
161 if(c->w == sw && c->h == sh) {
162 c->border = 0;
163 c->x = sx;
164 c->y = sy;
165 }
166 else {
167 c->border = BORDERPX;
168 if(c->x + c->w + 2 * c->border > wax + waw)
169 c->x = wax + waw - c->w - 2 * c->border;
170 if(c->y + c->h + 2 * c->border > way + wah)
171 c->y = way + wah - c->h - 2 * c->border;
172 if(c->x < wax)
173 c->x = wax;
174 if(c->y < way)
175 c->y = way;
176 }
177 updatesizehints(c);
178 XSelectInput(dpy, c->win,
179 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
180 XGetTransientForHint(dpy, c->win, &trans);
181 grabbuttons(c, False);
182 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
183 updatetitle(c);
184 settags(c, getclient(trans));
185 if(!c->isfloat)
186 c->isfloat = trans || c->isfixed;
187 if(clients)
188 clients->prev = c;
189 c->next = clients;
190 c->snext = stack;
191 stack = clients = c;
192 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
193 XMapWindow(dpy, c->win);
194 setclientstate(c, NormalState);
195 if(isvisible(c))
196 focus(c);
197 arrange();
198}
199
200void
201resize(Client *c, Bool sizehints) {
202 float actual, dx, dy, max, min;
203 XWindowChanges wc;
204
205 if(c->w <= 0 || c->h <= 0)
206 return;
207 if(sizehints) {
208 if(c->minw && c->w < c->minw)
209 c->w = c->minw;
210 if(c->minh && c->h < c->minh)
211 c->h = c->minh;
212 if(c->maxw && c->w > c->maxw)
213 c->w = c->maxw;
214 if(c->maxh && c->h > c->maxh)
215 c->h = c->maxh;
216 /* inspired by algorithm from fluxbox */
217 if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
218 dx = (float)(c->w - c->basew);
219 dy = (float)(c->h - c->baseh);
220 min = (float)(c->minax) / (float)(c->minay);
221 max = (float)(c->maxax) / (float)(c->maxay);
222 actual = dx / dy;
223 if(max > 0 && min > 0 && actual > 0) {
224 if(actual < min) {
225 dy = (dx * min + dy) / (min * min + 1);
226 dx = dy * min;
227 c->w = (int)dx + c->basew;
228 c->h = (int)dy + c->baseh;
229 }
230 else if(actual > max) {
231 dy = (dx * min + dy) / (max * max + 1);
232 dx = dy * min;
233 c->w = (int)dx + c->basew;
234 c->h = (int)dy + c->baseh;
235 }
236 }
237 }
238 if(c->incw)
239 c->w -= (c->w - c->basew) % c->incw;
240 if(c->inch)
241 c->h -= (c->h - c->baseh) % c->inch;
242 }
243 if(c->w == sw && c->h == sh)
244 c->border = 0;
245 else
246 c->border = BORDERPX;
247 /* offscreen appearance fixes */
248 if(c->x > sw)
249 c->x = sw - c->w - 2 * c->border;
250 if(c->y > sh)
251 c->y = sh - c->h - 2 * c->border;
252 if(c->x + c->w + 2 * c->border < sx)
253 c->x = sx;
254 if(c->y + c->h + 2 * c->border < sy)
255 c->y = sy;
256 wc.x = c->x;
257 wc.y = c->y;
258 wc.width = c->w;
259 wc.height = c->h;
260 wc.border_width = c->border;
261 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
262 configure(c);
263 XSync(dpy, False);
264}
265
266void
267updatesizehints(Client *c) {
268 long msize;
269 XSizeHints size;
270
271 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
272 size.flags = PSize;
273 c->flags = size.flags;
274 if(c->flags & PBaseSize) {
275 c->basew = size.base_width;
276 c->baseh = size.base_height;
277 }
278 else
279 c->basew = c->baseh = 0;
280 if(c->flags & PResizeInc) {
281 c->incw = size.width_inc;
282 c->inch = size.height_inc;
283 }
284 else
285 c->incw = c->inch = 0;
286 if(c->flags & PMaxSize) {
287 c->maxw = size.max_width;
288 c->maxh = size.max_height;
289 }
290 else
291 c->maxw = c->maxh = 0;
292 if(c->flags & PMinSize) {
293 c->minw = size.min_width;
294 c->minh = size.min_height;
295 }
296 else
297 c->minw = c->minh = 0;
298 if(c->flags & PAspect) {
299 c->minax = size.min_aspect.x;
300 c->minay = size.min_aspect.y;
301 c->maxax = size.max_aspect.x;
302 c->maxay = size.max_aspect.y;
303 }
304 else
305 c->minax = c->minay = c->maxax = c->maxay = 0;
306 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
307 c->maxw == c->minw && c->maxh == c->minh);
308}
309
310void
311updatetitle(Client *c) {
312 char **list = NULL;
313 int n;
314 XTextProperty name;
315
316 name.nitems = 0;
317 c->name[0] = 0;
318 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
319 if(!name.nitems)
320 XGetWMName(dpy, c->win, &name);
321 if(!name.nitems)
322 return;
323 if(name.encoding == XA_STRING)
324 strncpy(c->name, (char *)name.value, sizeof c->name);
325 else {
326 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
327 && n > 0 && *list)
328 {
329 strncpy(c->name, *list, sizeof c->name);
330 XFreeStringList(list);
331 }
332 }
333 XFree(name.value);
334}
335
336void
337unmanage(Client *c) {
338 Client *nc;
339
340 /* The server grab construct avoids race conditions. */
341 XGrabServer(dpy);
342 XSetErrorHandler(xerrordummy);
343 detach(c);
344 detachstack(c);
345 if(sel == c) {
346 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
347 focus(nc);
348 }
349 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
350 setclientstate(c, WithdrawnState);
351 free(c->tags);
352 free(c);
353 XSync(dpy, False);
354 XSetErrorHandler(xerror);
355 XUngrabServer(dpy);
356 arrange();
357}