aewl

view main.c @ 442:056a5072c70a

no this is better
author Anselm R. Garbe <arg@10kloc.org>
date Wed, 06 Sep 2006 15:36:42 +0200
parents 052657ff2e7b
children a2e587651c79
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
6 #include "dwm.h"
7 #include <errno.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <sys/select.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xatom.h>
16 #include <X11/Xproto.h>
18 /* extern */
20 char stext[1024];
21 Bool *seltag;
22 int bx, by, bw, bh, bmw, mw, screen, sx, sy, sw, sh;
23 unsigned int ntags, numlockmask;
24 Atom wmatom[WMLast], netatom[NetLast];
25 Bool running = True;
26 Bool issel = True;
27 Bool maximized = False;
28 Client *clients = NULL;
29 Client *sel = NULL;
30 Cursor cursor[CurLast];
31 Display *dpy;
32 DC dc = {0};
33 Window root, barwin;
35 /* static */
37 static int (*xerrorxlib)(Display *, XErrorEvent *);
38 static Bool otherwm, readin;
40 static void
41 cleanup()
42 {
43 close(STDIN_FILENO);
44 while(sel) {
45 resize(sel, True, TopLeft);
46 unmanage(sel);
47 }
48 if(dc.font.set)
49 XFreeFontSet(dpy, dc.font.set);
50 else
51 XFreeFont(dpy, dc.font.xfont);
52 XUngrabKey(dpy, AnyKey, AnyModifier, root);
53 XFreePixmap(dpy, dc.drawable);
54 XFreeGC(dpy, dc.gc);
55 XDestroyWindow(dpy, barwin);
56 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
57 XSync(dpy, False);
58 free(seltag);
59 }
61 static void
62 scan()
63 {
64 unsigned int i, num;
65 Window *wins, d1, d2;
66 XWindowAttributes wa;
68 wins = NULL;
69 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
70 for(i = 0; i < num; i++) {
71 if(!XGetWindowAttributes(dpy, wins[i], &wa))
72 continue;
73 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
74 continue;
75 if(wa.map_state == IsViewable)
76 manage(wins[i], &wa);
77 }
78 }
79 if(wins)
80 XFree(wins);
81 }
83 static void
84 setup()
85 {
86 int i, j;
87 unsigned int mask;
88 Window w;
89 XModifierKeymap *modmap;
90 XSetWindowAttributes wa;
92 /* init atoms */
93 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
94 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
95 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
96 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
97 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
98 PropModeReplace, (unsigned char *) netatom, NetLast);
100 /* init cursors */
101 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
102 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
103 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
105 modmap = XGetModifierMapping(dpy);
106 for (i = 0; i < 8; i++) {
107 for (j = 0; j < modmap->max_keypermod; j++) {
108 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
109 numlockmask = (1 << i);
110 }
111 }
112 XFree(modmap);
114 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
115 wa.cursor = cursor[CurNormal];
116 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
118 grabkeys();
119 initrregs();
121 for(ntags = 0; tags[ntags]; ntags++);
122 seltag = emallocz(sizeof(Bool) * ntags);
123 seltag[0] = True;
125 /* style */
126 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
127 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
128 dc.sel[ColBG] = getcolor(SELBGCOLOR);
129 dc.sel[ColFG] = getcolor(SELFGCOLOR);
130 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
131 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
132 setfont(FONT);
134 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL);
135 sx = sy = 0;
136 sw = DisplayWidth(dpy, screen);
137 sh = DisplayHeight(dpy, screen);
138 mw = (sw * MASTERW) / 100;
140 bx = by = 0;
141 bw = sw;
142 dc.h = bh = dc.font.height + 2;
143 wa.override_redirect = 1;
144 wa.background_pixmap = ParentRelative;
145 wa.event_mask = ButtonPressMask | ExposureMask;
146 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
147 CopyFromParent, DefaultVisual(dpy, screen),
148 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
149 XDefineCursor(dpy, barwin, cursor[CurNormal]);
150 XMapRaised(dpy, barwin);
152 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
153 dc.gc = XCreateGC(dpy, root, 0, 0);
154 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
156 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
157 strcpy(stext, "dwm-"VERSION);
158 }
160 /*
161 * Startup Error handler to check if another window manager
162 * is already running.
163 */
164 static int
165 xerrorstart(Display *dsply, XErrorEvent *ee)
166 {
167 otherwm = True;
168 return -1;
169 }
171 /* extern */
173 int
174 getproto(Window w)
175 {
176 int i, format, protos, status;
177 unsigned long extra, res;
178 Atom *protocols, real;
180 protos = 0;
181 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
182 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
183 if(status != Success || protocols == 0)
184 return protos;
185 for(i = 0; i < res; i++)
186 if(protocols[i] == wmatom[WMDelete])
187 protos |= PROTODELWIN;
188 free(protocols);
189 return protos;
190 }
192 void
193 sendevent(Window w, Atom a, long value)
194 {
195 XEvent e;
197 e.type = ClientMessage;
198 e.xclient.window = w;
199 e.xclient.message_type = a;
200 e.xclient.format = 32;
201 e.xclient.data.l[0] = value;
202 e.xclient.data.l[1] = CurrentTime;
203 XSendEvent(dpy, w, False, NoEventMask, &e);
204 XSync(dpy, False);
205 }
207 void
208 quit(Arg *arg)
209 {
210 readin = running = False;
211 }
213 /*
214 * There's no way to check accesses to destroyed windows, thus those cases are
215 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
216 * default error handler, which calls exit().
217 */
218 int
219 xerror(Display *dpy, XErrorEvent *ee)
220 {
221 if(ee->error_code == BadWindow
222 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
223 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
224 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
225 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
226 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
227 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
228 return 0;
229 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
230 ee->request_code, ee->error_code);
231 return xerrorxlib(dpy, ee); /* may call exit() */
232 }
234 int
235 main(int argc, char *argv[])
236 {
237 int r, xfd;
238 fd_set rd;
240 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
241 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
242 exit(EXIT_SUCCESS);
243 }
244 else if(argc != 1)
245 eprint("usage: dwm [-v]\n");
247 dpy = XOpenDisplay(0);
248 if(!dpy)
249 eprint("dwm: cannot open display\n");
251 xfd = ConnectionNumber(dpy);
252 screen = DefaultScreen(dpy);
253 root = RootWindow(dpy, screen);
255 otherwm = False;
256 XSetErrorHandler(xerrorstart);
257 /* this causes an error if some other window manager is running */
258 XSelectInput(dpy, root, SubstructureRedirectMask);
259 XSync(dpy, False);
261 if(otherwm)
262 eprint("dwm: another window manager is already running\n");
264 XSync(dpy, False);
265 XSetErrorHandler(NULL);
266 xerrorxlib = XSetErrorHandler(xerror);
267 XSync(dpy, False);
269 setup();
270 drawstatus();
271 scan();
273 /* main event loop, also reads status text from stdin */
274 XSync(dpy, False);
275 procevent();
276 readin = True;
277 while(running) {
278 FD_ZERO(&rd);
279 if(readin)
280 FD_SET(STDIN_FILENO, &rd);
281 FD_SET(xfd, &rd);
282 r = select(xfd + 1, &rd, NULL, NULL, NULL);
283 if((r == -1) && (errno == EINTR))
284 continue;
285 if(r > 0) {
286 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
287 readin = NULL != fgets(stext, sizeof(stext), stdin);
288 if(readin)
289 stext[strlen(stext) - 1] = 0;
290 else
291 strcpy(stext, "broken pipe");
292 drawstatus();
293 }
294 }
295 else if(r < 0)
296 eprint("select failed\n");
297 procevent();
298 }
299 cleanup();
300 XCloseDisplay(dpy);
302 return 0;
303 }