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annotate main.c @ 358:64c19db8af25

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author Anselm R. Garbe <arg@10kloc.org>
date Fri, 25 Aug 2006 15:16:20 +0200
parents 8a06efe5b563
children 175045ce7537
rev   line source
garbeam@0 1 /*
garbeam@0 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@0 3 * See LICENSE file for license details.
garbeam@0 4 */
garbeam@0 5
garbeam@76 6 #include "dwm.h"
garbeam@59 7 #include <errno.h>
garbeam@0 8 #include <stdio.h>
garbeam@0 9 #include <stdlib.h>
garbeam@57 10 #include <string.h>
garbeam@59 11 #include <unistd.h>
arg@138 12 #include <sys/select.h>
garbeam@0 13 #include <X11/cursorfont.h>
arg@291 14 #include <X11/keysym.h>
garbeam@0 15 #include <X11/Xatom.h>
garbeam@0 16 #include <X11/Xproto.h>
garbeam@0 17
arg@333 18 /* extern */
arg@333 19
arg@333 20 char stext[1024];
arg@333 21 Bool *seltag;
arg@333 22 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
arg@353 23 unsigned int ntags, numlockmask, modew;
arg@333 24 Atom wmatom[WMLast], netatom[NetLast];
arg@333 25 Bool running = True;
arg@333 26 Bool issel = True;
arg@333 27 Client *clients = NULL;
arg@333 28 Client *sel = NULL;
arg@333 29 Cursor cursor[CurLast];
arg@333 30 Display *dpy;
arg@333 31 DC dc = {0};
arg@333 32 Window root, barwin;
arg@333 33
garbeam@84 34 /* static */
garbeam@0 35
arg@123 36 static int (*xerrorxlib)(Display *, XErrorEvent *);
arg@302 37 static Bool otherwm, readin;
garbeam@0 38
garbeam@0 39 static void
garbeam@76 40 cleanup()
garbeam@76 41 {
arg@302 42 close(STDIN_FILENO);
garbeam@76 43 while(sel) {
arg@99 44 resize(sel, True, TopLeft);
garbeam@76 45 unmanage(sel);
garbeam@76 46 }
arg@295 47 if(dc.font.set)
arg@295 48 XFreeFontSet(dpy, dc.font.set);
arg@295 49 else
arg@295 50 XFreeFont(dpy, dc.font.xfont);
arg@292 51 XUngrabKey(dpy, AnyKey, AnyModifier, root);
arg@295 52 XFreePixmap(dpy, dc.drawable);
arg@295 53 XFreeGC(dpy, dc.gc);
arg@309 54 XDestroyWindow(dpy, barwin);
garbeam@76 55 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
arg@292 56 XSync(dpy, False);
garbeam@76 57 }
garbeam@0 58
garbeam@0 59 static void
garbeam@75 60 scan()
garbeam@0 61 {
garbeam@0 62 unsigned int i, num;
arg@123 63 Window *wins, d1, d2;
garbeam@0 64 XWindowAttributes wa;
garbeam@0 65
arg@292 66 wins = NULL;
garbeam@0 67 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 68 for(i = 0; i < num; i++) {
garbeam@0 69 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 70 continue;
garbeam@0 71 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 72 continue;
garbeam@0 73 if(wa.map_state == IsViewable)
garbeam@10 74 manage(wins[i], &wa);
garbeam@0 75 }
garbeam@0 76 }
garbeam@0 77 if(wins)
garbeam@0 78 XFree(wins);
garbeam@0 79 }
garbeam@0 80
arg@333 81 static void
arg@333 82 setup()
arg@333 83 {
arg@333 84 int i, j;
arg@333 85 unsigned int mask;
arg@333 86 Window w;
arg@333 87 XModifierKeymap *modmap;
arg@333 88 XSetWindowAttributes wa;
arg@333 89
arg@333 90 /* init atoms */
arg@333 91 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
arg@333 92 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
arg@333 93 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 94 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 95 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 96 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 97
arg@333 98 /* init cursors */
arg@333 99 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 100 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 101 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@333 102
arg@333 103 modmap = XGetModifierMapping(dpy);
arg@333 104 for (i = 0; i < 8; i++) {
arg@333 105 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 106 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 107 numlockmask = (1 << i);
arg@333 108 }
arg@333 109 }
arg@333 110 XFree(modmap);
arg@333 111
arg@333 112 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
arg@333 113 wa.cursor = cursor[CurNormal];
arg@333 114 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 115
arg@333 116 grabkeys();
arg@333 117 initrregs();
arg@333 118
arg@333 119 for(ntags = 0; tags[ntags]; ntags++);
arg@333 120 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 121 seltag[0] = True;
arg@333 122
arg@333 123 /* style */
arg@353 124 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 125 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@353 126 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 127 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@353 128 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
arg@353 129 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
arg@333 130 setfont(FONT);
arg@333 131
arg@357 132 modew = textw(FLOATSYMBOL) > textw(TILEDSYMBOL) ? textw(FLOATSYMBOL) : textw(TILEDSYMBOL);
arg@333 133 sx = sy = 0;
arg@333 134 sw = DisplayWidth(dpy, screen);
arg@333 135 sh = DisplayHeight(dpy, screen);
arg@333 136 mw = (sw * MASTERW) / 100;
arg@333 137
arg@333 138 bx = by = 0;
arg@333 139 bw = sw;
arg@353 140 dc.h = bh = dc.font.height + 2;
arg@333 141 wa.override_redirect = 1;
arg@333 142 wa.background_pixmap = ParentRelative;
arg@333 143 wa.event_mask = ButtonPressMask | ExposureMask;
arg@333 144 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
arg@333 145 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 146 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 147 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 148 XMapRaised(dpy, barwin);
arg@333 149
arg@333 150 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 151 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 152 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@333 153
arg@333 154 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 155 strcpy(stext, "dwm-"VERSION);
arg@333 156 }
arg@333 157
garbeam@76 158 /*
garbeam@76 159 * Startup Error handler to check if another window manager
garbeam@76 160 * is already running.
garbeam@76 161 */
garbeam@76 162 static int
garbeam@76 163 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 164 {
garbeam@76 165 otherwm = True;
garbeam@76 166 return -1;
garbeam@76 167 }
garbeam@76 168
garbeam@84 169 /* extern */
garbeam@84 170
garbeam@13 171 int
garbeam@75 172 getproto(Window w)
garbeam@13 173 {
arg@329 174 int i, format, protos, status;
arg@328 175 unsigned long extra, res;
arg@328 176 Atom *protocols, real;
garbeam@13 177
arg@329 178 protos = 0;
arg@329 179 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 180 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 181 if(status != Success || protocols == 0)
garbeam@13 182 return protos;
arg@329 183 for(i = 0; i < res; i++)
garbeam@77 184 if(protocols[i] == wmatom[WMDelete])
arg@157 185 protos |= PROTODELWIN;
arg@328 186 free(protocols);
garbeam@13 187 return protos;
garbeam@13 188 }
garbeam@13 189
garbeam@13 190 void
garbeam@74 191 sendevent(Window w, Atom a, long value)
garbeam@13 192 {
garbeam@13 193 XEvent e;
garbeam@13 194
garbeam@13 195 e.type = ClientMessage;
garbeam@13 196 e.xclient.window = w;
garbeam@13 197 e.xclient.message_type = a;
garbeam@13 198 e.xclient.format = 32;
garbeam@13 199 e.xclient.data.l[0] = value;
garbeam@13 200 e.xclient.data.l[1] = CurrentTime;
garbeam@13 201 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 202 XSync(dpy, False);
garbeam@13 203 }
garbeam@13 204
garbeam@76 205 void
garbeam@76 206 quit(Arg *arg)
garbeam@75 207 {
arg@302 208 readin = running = False;
garbeam@75 209 }
garbeam@75 210
garbeam@75 211 /*
garbeam@84 212 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 213 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
garbeam@84 214 * default error handler, which calls exit().
garbeam@0 215 */
garbeam@10 216 int
garbeam@75 217 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 218 {
garbeam@75 219 if(ee->error_code == BadWindow
arg@123 220 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 221 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 222 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 223 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 224 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@123 225 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
garbeam@0 226 return 0;
garbeam@34 227 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 228 ee->request_code, ee->error_code);
garbeam@75 229 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 230 }
garbeam@27 231
garbeam@0 232 int
garbeam@0 233 main(int argc, char *argv[])
garbeam@0 234 {
arg@333 235 int r, xfd;
garbeam@59 236 fd_set rd;
garbeam@0 237
arg@137 238 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@137 239 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
arg@137 240 exit(EXIT_SUCCESS);
garbeam@0 241 }
arg@137 242 else if(argc != 1)
arg@137 243 eprint("usage: dwm [-v]\n");
garbeam@0 244
garbeam@0 245 dpy = XOpenDisplay(0);
garbeam@0 246 if(!dpy)
arg@197 247 eprint("dwm: cannot open display\n");
garbeam@0 248
arg@265 249 xfd = ConnectionNumber(dpy);
garbeam@0 250 screen = DefaultScreen(dpy);
garbeam@0 251 root = RootWindow(dpy, screen);
garbeam@0 252
garbeam@75 253 otherwm = False;
garbeam@75 254 XSetErrorHandler(xerrorstart);
arg@197 255 /* this causes an error if some other window manager is running */
garbeam@0 256 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 257 XSync(dpy, False);
garbeam@0 258
garbeam@75 259 if(otherwm)
garbeam@75 260 eprint("dwm: another window manager is already running\n");
garbeam@0 261
arg@292 262 XSync(dpy, False);
garbeam@78 263 XSetErrorHandler(NULL);
garbeam@75 264 xerrorxlib = XSetErrorHandler(xerror);
arg@275 265 XSync(dpy, False);
garbeam@0 266
arg@333 267 setup();
garbeam@74 268 drawstatus();
garbeam@75 269 scan();
garbeam@3 270
arg@214 271 /* main event loop, also reads status text from stdin */
arg@242 272 XSync(dpy, False);
arg@292 273 procevent();
arg@302 274 readin = True;
garbeam@5 275 while(running) {
garbeam@59 276 FD_ZERO(&rd);
arg@164 277 if(readin)
arg@164 278 FD_SET(STDIN_FILENO, &rd);
arg@265 279 FD_SET(xfd, &rd);
arg@333 280 r = select(xfd + 1, &rd, NULL, NULL, NULL);
arg@333 281 if((r == -1) && (errno == EINTR))
garbeam@59 282 continue;
arg@333 283 if(r > 0) {
arg@164 284 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
arg@164 285 readin = NULL != fgets(stext, sizeof(stext), stdin);
arg@164 286 if(readin)
arg@164 287 stext[strlen(stext) - 1] = 0;
arg@162 288 else
arg@164 289 strcpy(stext, "broken pipe");
garbeam@74 290 drawstatus();
garbeam@59 291 }
garbeam@59 292 }
arg@333 293 else if(r < 0)
arg@316 294 eprint("select failed\n");
arg@293 295 procevent();
garbeam@5 296 }
garbeam@0 297 cleanup();
garbeam@0 298 XCloseDisplay(dpy);
garbeam@0 299
garbeam@0 300 return 0;
garbeam@0 301 }