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 XEvent synev;
73
74 synev.type = ConfigureNotify;
75 synev.xconfigure.display = dpy;
76 synev.xconfigure.event = c->win;
77 synev.xconfigure.window = c->win;
78 synev.xconfigure.x = c->x;
79 synev.xconfigure.y = c->y;
80 synev.xconfigure.width = c->w;
81 synev.xconfigure.height = c->h;
82 synev.xconfigure.border_width = c->border;
83 synev.xconfigure.above = None;
84 XSendEvent(dpy, c->win, True, NoEventMask, &synev);
85}
86
87void
88focus(Client *c) {
89 if(c && !isvisible(c))
90 return;
91 if(sel && sel != c) {
92 grabbuttons(sel, False);
93 XSetWindowBorder(dpy, sel->win, dc.norm[ColBorder]);
94 }
95 if(c) {
96 detachstack(c);
97 c->snext = stack;
98 stack = c;
99 grabbuttons(c, True);
100 }
101 sel = c;
102 drawstatus();
103 if(!selscreen)
104 return;
105 if(c) {
106 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
107 XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
108 }
109 else
110 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
111}
112
113Client *
114getclient(Window w) {
115 Client *c;
116
117 for(c = clients; c; c = c->next)
118 if(c->win == w)
119 return c;
120 return NULL;
121}
122
123void
124killclient(Arg *arg) {
125 if(!sel)
126 return;
127 if(sel->proto & PROTODELWIN)
128 sendevent(sel->win, wmatom[WMProtocols], wmatom[WMDelete]);
129 else
130 XKillClient(dpy, sel->win);
131}
132
133void
134manage(Window w, XWindowAttributes *wa) {
135 Client *c;
136 Window trans;
137
138 c = emallocz(sizeof(Client));
139 c->tags = emallocz(ntags * sizeof(Bool));
140 c->win = w;
141 c->x = wa->x;
142 c->y = wa->y;
143 c->w = wa->width;
144 c->h = wa->height;
145 if(c->w == sw && c->h == sh) {
146 c->border = 0;
147 c->x = sx;
148 c->y = sy;
149 }
150 else {
151 c->border = BORDERPX;
152 if(c->x + c->w + 2 * c->border > wax + waw)
153 c->x = wax + waw - c->w - 2 * c->border;
154 if(c->y + c->h + 2 * c->border > way + wah)
155 c->y = way + wah - c->h - 2 * c->border;
156 if(c->x < wax)
157 c->x = wax;
158 if(c->y < way)
159 c->y = way;
160 }
161 updatesizehints(c);
162 c->proto = getproto(c->win);
163 XSelectInput(dpy, c->win,
164 StructureNotifyMask | PropertyChangeMask | EnterWindowMask);
165 XGetTransientForHint(dpy, c->win, &trans);
166 grabbuttons(c, False);
167 XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
168 updatetitle(c);
169 settags(c, getclient(trans));
170 if(!c->isfloat)
171 c->isfloat = trans || c->isfixed;
172 if(clients)
173 clients->prev = c;
174 c->next = clients;
175 c->snext = stack;
176 stack = clients = c;
177 XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
178 XMapWindow(dpy, c->win);
179 setclientstate(c, NormalState);
180 if(isvisible(c))
181 focus(c);
182 arrange();
183}
184
185void
186resize(Client *c, Bool sizehints) {
187 float actual, dx, dy, max, min;
188 XWindowChanges wc;
189
190 if(c->w <= 0 || c->h <= 0)
191 return;
192 if(sizehints) {
193 if(c->minw && c->w < c->minw)
194 c->w = c->minw;
195 if(c->minh && c->h < c->minh)
196 c->h = c->minh;
197 if(c->maxw && c->w > c->maxw)
198 c->w = c->maxw;
199 if(c->maxh && c->h > c->maxh)
200 c->h = c->maxh;
201 /* inspired by algorithm from fluxbox */
202 if(c->minay > 0 && c->maxay && (c->h - c->baseh) > 0) {
203 dx = (float)(c->w - c->basew);
204 dy = (float)(c->h - c->baseh);
205 min = (float)(c->minax) / (float)(c->minay);
206 max = (float)(c->maxax) / (float)(c->maxay);
207 actual = dx / dy;
208 if(max > 0 && min > 0 && actual > 0) {
209 if(actual < min) {
210 dy = (dx * min + dy) / (min * min + 1);
211 dx = dy * min;
212 c->w = (int)dx + c->basew;
213 c->h = (int)dy + c->baseh;
214 }
215 else if(actual > max) {
216 dy = (dx * min + dy) / (max * max + 1);
217 dx = dy * min;
218 c->w = (int)dx + c->basew;
219 c->h = (int)dy + c->baseh;
220 }
221 }
222 }
223 if(c->incw)
224 c->w -= (c->w - c->basew) % c->incw;
225 if(c->inch)
226 c->h -= (c->h - c->baseh) % c->inch;
227 }
228 if(c->w == sw && c->h == sh)
229 c->border = 0;
230 else
231 c->border = BORDERPX;
232 /* offscreen appearance fixes */
233 if(c->x > sw)
234 c->x = sw - c->w - 2 * c->border;
235 if(c->y > sh)
236 c->y = sh - c->h - 2 * c->border;
237 if(c->x + c->w + 2 * c->border < sx)
238 c->x = sx;
239 if(c->y + c->h + 2 * c->border < sy)
240 c->y = sy;
241 wc.x = c->x;
242 wc.y = c->y;
243 wc.width = c->w;
244 wc.height = c->h;
245 wc.border_width = c->border;
246 XConfigureWindow(dpy, c->win, CWX | CWY | CWWidth | CWHeight | CWBorderWidth, &wc);
247 configure(c);
248 XSync(dpy, False);
249}
250
251void
252updatesizehints(Client *c) {
253 long msize;
254 XSizeHints size;
255
256 if(!XGetWMNormalHints(dpy, c->win, &size, &msize) || !size.flags)
257 size.flags = PSize;
258 c->flags = size.flags;
259 if(c->flags & PBaseSize) {
260 c->basew = size.base_width;
261 c->baseh = size.base_height;
262 }
263 else
264 c->basew = c->baseh = 0;
265 if(c->flags & PResizeInc) {
266 c->incw = size.width_inc;
267 c->inch = size.height_inc;
268 }
269 else
270 c->incw = c->inch = 0;
271 if(c->flags & PMaxSize) {
272 c->maxw = size.max_width;
273 c->maxh = size.max_height;
274 }
275 else
276 c->maxw = c->maxh = 0;
277 if(c->flags & PMinSize) {
278 c->minw = size.min_width;
279 c->minh = size.min_height;
280 }
281 else
282 c->minw = c->minh = 0;
283 if(c->flags & PAspect) {
284 c->minax = size.min_aspect.x;
285 c->minay = size.min_aspect.y;
286 c->maxax = size.max_aspect.x;
287 c->maxay = size.max_aspect.y;
288 }
289 else
290 c->minax = c->minay = c->maxax = c->maxay = 0;
291 c->isfixed = (c->maxw && c->minw && c->maxh && c->minh &&
292 c->maxw == c->minw && c->maxh == c->minh);
293}
294
295void
296updatetitle(Client *c) {
297 char **list = NULL;
298 int n;
299 XTextProperty name;
300
301 name.nitems = 0;
302 c->name[0] = 0;
303 XGetTextProperty(dpy, c->win, &name, netatom[NetWMName]);
304 if(!name.nitems)
305 XGetWMName(dpy, c->win, &name);
306 if(!name.nitems)
307 return;
308 if(name.encoding == XA_STRING)
309 strncpy(c->name, (char *)name.value, sizeof c->name);
310 else {
311 if(XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success
312 && n > 0 && *list)
313 {
314 strncpy(c->name, *list, sizeof c->name);
315 XFreeStringList(list);
316 }
317 }
318 XFree(name.value);
319}
320
321void
322unmanage(Client *c) {
323 Client *nc;
324
325 /* The server grab construct avoids race conditions. */
326 XGrabServer(dpy);
327 XSetErrorHandler(xerrordummy);
328 detach(c);
329 detachstack(c);
330 if(sel == c) {
331 for(nc = stack; nc && !isvisible(nc); nc = nc->snext);
332 focus(nc);
333 }
334 XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
335 setclientstate(c, WithdrawnState);
336 free(c->tags);
337 free(c);
338 XSync(dpy, False);
339 XSetErrorHandler(xerror);
340 XUngrabServer(dpy);
341 arrange();
342}