dwm-meillo

view main.c @ 425:67f37b93ac73

fixing two off-by-ones
author Anselm R. Garbe <arg@10kloc.org>
date Tue, 05 Sep 2006 16:11:52 +0200
parents ba6c55e1b9b2
children a6b8994af164
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 }
60 static void
61 scan()
62 {
63 unsigned int i, num;
64 Window *wins, d1, d2;
65 XWindowAttributes wa;
67 wins = NULL;
68 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
69 for(i = 0; i < num; i++) {
70 if(!XGetWindowAttributes(dpy, wins[i], &wa))
71 continue;
72 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
73 continue;
74 if(wa.map_state == IsViewable)
75 manage(wins[i], &wa);
76 }
77 }
78 if(wins)
79 XFree(wins);
80 }
82 static void
83 setup()
84 {
85 int i, j;
86 unsigned int mask;
87 Window w;
88 XModifierKeymap *modmap;
89 XSetWindowAttributes wa;
91 /* init atoms */
92 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
93 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
94 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
95 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
96 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
97 PropModeReplace, (unsigned char *) netatom, NetLast);
99 /* init cursors */
100 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
101 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
102 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
104 modmap = XGetModifierMapping(dpy);
105 for (i = 0; i < 8; i++) {
106 for (j = 0; j < modmap->max_keypermod; j++) {
107 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
108 numlockmask = (1 << i);
109 }
110 }
111 XFree(modmap);
113 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
114 wa.cursor = cursor[CurNormal];
115 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
117 grabkeys();
118 initrregs();
120 for(ntags = 0; tags[ntags]; ntags++);
121 seltag = emallocz(sizeof(Bool) * ntags);
122 seltag[0] = True;
124 /* style */
125 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
126 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
127 dc.sel[ColBG] = getcolor(SELBGCOLOR);
128 dc.sel[ColFG] = getcolor(SELFGCOLOR);
129 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
130 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
131 setfont(FONT);
133 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL);
134 sx = sy = 0;
135 sw = DisplayWidth(dpy, screen);
136 sh = DisplayHeight(dpy, screen);
137 mw = (sw * MASTERW) / 100;
139 bx = by = 0;
140 bw = sw;
141 dc.h = bh = dc.font.height + 2;
142 wa.override_redirect = 1;
143 wa.background_pixmap = ParentRelative;
144 wa.event_mask = ButtonPressMask | ExposureMask;
145 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
146 CopyFromParent, DefaultVisual(dpy, screen),
147 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
148 XDefineCursor(dpy, barwin, cursor[CurNormal]);
149 XMapRaised(dpy, barwin);
151 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
152 dc.gc = XCreateGC(dpy, root, 0, 0);
153 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
155 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
156 strcpy(stext, "dwm-"VERSION);
157 }
159 /*
160 * Startup Error handler to check if another window manager
161 * is already running.
162 */
163 static int
164 xerrorstart(Display *dsply, XErrorEvent *ee)
165 {
166 otherwm = True;
167 return -1;
168 }
170 /* extern */
172 int
173 getproto(Window w)
174 {
175 int i, format, protos, status;
176 unsigned long extra, res;
177 Atom *protocols, real;
179 protos = 0;
180 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
181 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
182 if(status != Success || protocols == 0)
183 return protos;
184 for(i = 0; i < res; i++)
185 if(protocols[i] == wmatom[WMDelete])
186 protos |= PROTODELWIN;
187 free(protocols);
188 return protos;
189 }
191 void
192 sendevent(Window w, Atom a, long value)
193 {
194 XEvent e;
196 e.type = ClientMessage;
197 e.xclient.window = w;
198 e.xclient.message_type = a;
199 e.xclient.format = 32;
200 e.xclient.data.l[0] = value;
201 e.xclient.data.l[1] = CurrentTime;
202 XSendEvent(dpy, w, False, NoEventMask, &e);
203 XSync(dpy, False);
204 }
206 void
207 quit(Arg *arg)
208 {
209 readin = running = False;
210 }
212 /*
213 * There's no way to check accesses to destroyed windows, thus those cases are
214 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
215 * default error handler, which calls exit().
216 */
217 int
218 xerror(Display *dpy, XErrorEvent *ee)
219 {
220 if(ee->error_code == BadWindow
221 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
222 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
223 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
224 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
225 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
226 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
227 return 0;
228 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
229 ee->request_code, ee->error_code);
230 return xerrorxlib(dpy, ee); /* may call exit() */
231 }
233 int
234 main(int argc, char *argv[])
235 {
236 int r, xfd;
237 fd_set rd;
239 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
240 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
241 exit(EXIT_SUCCESS);
242 }
243 else if(argc != 1)
244 eprint("usage: dwm [-v]\n");
246 dpy = XOpenDisplay(0);
247 if(!dpy)
248 eprint("dwm: cannot open display\n");
250 xfd = ConnectionNumber(dpy);
251 screen = DefaultScreen(dpy);
252 root = RootWindow(dpy, screen);
254 otherwm = False;
255 XSetErrorHandler(xerrorstart);
256 /* this causes an error if some other window manager is running */
257 XSelectInput(dpy, root, SubstructureRedirectMask);
258 XSync(dpy, False);
260 if(otherwm)
261 eprint("dwm: another window manager is already running\n");
263 XSync(dpy, False);
264 XSetErrorHandler(NULL);
265 xerrorxlib = XSetErrorHandler(xerror);
266 XSync(dpy, False);
268 setup();
269 drawstatus();
270 scan();
272 /* main event loop, also reads status text from stdin */
273 XSync(dpy, False);
274 procevent();
275 readin = True;
276 while(running) {
277 FD_ZERO(&rd);
278 if(readin)
279 FD_SET(STDIN_FILENO, &rd);
280 FD_SET(xfd, &rd);
281 r = select(xfd + 1, &rd, NULL, NULL, NULL);
282 if((r == -1) && (errno == EINTR))
283 continue;
284 if(r > 0) {
285 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
286 readin = NULL != fgets(stext, sizeof(stext), stdin);
287 if(readin)
288 stext[strlen(stext) - 1] = 0;
289 else
290 strcpy(stext, "broken pipe");
291 drawstatus();
292 }
293 }
294 else if(r < 0)
295 eprint("select failed\n");
296 procevent();
297 }
298 cleanup();
299 XCloseDisplay(dpy);
301 return 0;
302 }