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annotate main.c @ 442:056a5072c70a

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no this is better
author Anselm R. Garbe <arg@10kloc.org>
date Wed, 06 Sep 2006 15:36:42 +0200
parents 052657ff2e7b
children a2e587651c79
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@362 22 int bx, by, bw, bh, bmw, mw, screen, sx, sy, sw, sh;
arg@362 23 unsigned int ntags, numlockmask;
arg@333 24 Atom wmatom[WMLast], netatom[NetLast];
arg@333 25 Bool running = True;
arg@333 26 Bool issel = True;
arg@400 27 Bool maximized = False;
arg@333 28 Client *clients = NULL;
arg@333 29 Client *sel = NULL;
arg@333 30 Cursor cursor[CurLast];
arg@333 31 Display *dpy;
arg@333 32 DC dc = {0};
arg@333 33 Window root, barwin;
arg@333 34
garbeam@84 35 /* static */
garbeam@0 36
arg@123 37 static int (*xerrorxlib)(Display *, XErrorEvent *);
arg@302 38 static Bool otherwm, readin;
garbeam@0 39
garbeam@0 40 static void
garbeam@76 41 cleanup()
garbeam@76 42 {
arg@302 43 close(STDIN_FILENO);
garbeam@76 44 while(sel) {
arg@99 45 resize(sel, True, TopLeft);
garbeam@76 46 unmanage(sel);
garbeam@76 47 }
arg@295 48 if(dc.font.set)
arg@295 49 XFreeFontSet(dpy, dc.font.set);
arg@295 50 else
arg@295 51 XFreeFont(dpy, dc.font.xfont);
arg@292 52 XUngrabKey(dpy, AnyKey, AnyModifier, root);
arg@295 53 XFreePixmap(dpy, dc.drawable);
arg@295 54 XFreeGC(dpy, dc.gc);
arg@309 55 XDestroyWindow(dpy, barwin);
garbeam@76 56 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
arg@292 57 XSync(dpy, False);
arg@433 58 free(seltag);
garbeam@76 59 }
garbeam@0 60
garbeam@0 61 static void
garbeam@75 62 scan()
garbeam@0 63 {
garbeam@0 64 unsigned int i, num;
arg@123 65 Window *wins, d1, d2;
garbeam@0 66 XWindowAttributes wa;
garbeam@0 67
arg@292 68 wins = NULL;
garbeam@0 69 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 70 for(i = 0; i < num; i++) {
garbeam@0 71 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 72 continue;
garbeam@0 73 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 74 continue;
garbeam@0 75 if(wa.map_state == IsViewable)
garbeam@10 76 manage(wins[i], &wa);
garbeam@0 77 }
garbeam@0 78 }
garbeam@0 79 if(wins)
garbeam@0 80 XFree(wins);
garbeam@0 81 }
garbeam@0 82
arg@333 83 static void
arg@333 84 setup()
arg@333 85 {
arg@333 86 int i, j;
arg@333 87 unsigned int mask;
arg@333 88 Window w;
arg@333 89 XModifierKeymap *modmap;
arg@333 90 XSetWindowAttributes wa;
arg@333 91
arg@333 92 /* init atoms */
arg@333 93 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
arg@333 94 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
arg@333 95 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 96 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 97 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 98 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 99
arg@333 100 /* init cursors */
arg@333 101 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 102 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 103 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@333 104
arg@333 105 modmap = XGetModifierMapping(dpy);
arg@333 106 for (i = 0; i < 8; i++) {
arg@333 107 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 108 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 109 numlockmask = (1 << i);
arg@333 110 }
arg@333 111 }
arg@333 112 XFree(modmap);
arg@333 113
arg@333 114 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
arg@333 115 wa.cursor = cursor[CurNormal];
arg@333 116 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 117
arg@333 118 grabkeys();
arg@333 119 initrregs();
arg@333 120
arg@333 121 for(ntags = 0; tags[ntags]; ntags++);
arg@333 122 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 123 seltag[0] = True;
arg@333 124
arg@333 125 /* style */
arg@353 126 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 127 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@353 128 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 129 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@353 130 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
arg@353 131 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
arg@333 132 setfont(FONT);
arg@333 133
arg@362 134 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL);
arg@333 135 sx = sy = 0;
arg@333 136 sw = DisplayWidth(dpy, screen);
arg@333 137 sh = DisplayHeight(dpy, screen);
arg@333 138 mw = (sw * MASTERW) / 100;
arg@333 139
arg@333 140 bx = by = 0;
arg@333 141 bw = sw;
arg@353 142 dc.h = bh = dc.font.height + 2;
arg@333 143 wa.override_redirect = 1;
arg@333 144 wa.background_pixmap = ParentRelative;
arg@333 145 wa.event_mask = ButtonPressMask | ExposureMask;
arg@333 146 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
arg@333 147 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 148 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 149 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 150 XMapRaised(dpy, barwin);
arg@333 151
arg@333 152 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 153 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 154 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@333 155
arg@333 156 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 157 strcpy(stext, "dwm-"VERSION);
arg@333 158 }
arg@333 159
garbeam@76 160 /*
garbeam@76 161 * Startup Error handler to check if another window manager
garbeam@76 162 * is already running.
garbeam@76 163 */
garbeam@76 164 static int
garbeam@76 165 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 166 {
garbeam@76 167 otherwm = True;
garbeam@76 168 return -1;
garbeam@76 169 }
garbeam@76 170
garbeam@84 171 /* extern */
garbeam@84 172
garbeam@13 173 int
garbeam@75 174 getproto(Window w)
garbeam@13 175 {
arg@329 176 int i, format, protos, status;
arg@328 177 unsigned long extra, res;
arg@328 178 Atom *protocols, real;
garbeam@13 179
arg@329 180 protos = 0;
arg@329 181 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 182 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 183 if(status != Success || protocols == 0)
garbeam@13 184 return protos;
arg@329 185 for(i = 0; i < res; i++)
garbeam@77 186 if(protocols[i] == wmatom[WMDelete])
arg@157 187 protos |= PROTODELWIN;
arg@328 188 free(protocols);
garbeam@13 189 return protos;
garbeam@13 190 }
garbeam@13 191
garbeam@13 192 void
garbeam@74 193 sendevent(Window w, Atom a, long value)
garbeam@13 194 {
garbeam@13 195 XEvent e;
garbeam@13 196
garbeam@13 197 e.type = ClientMessage;
garbeam@13 198 e.xclient.window = w;
garbeam@13 199 e.xclient.message_type = a;
garbeam@13 200 e.xclient.format = 32;
garbeam@13 201 e.xclient.data.l[0] = value;
garbeam@13 202 e.xclient.data.l[1] = CurrentTime;
garbeam@13 203 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 204 XSync(dpy, False);
garbeam@13 205 }
garbeam@13 206
garbeam@76 207 void
garbeam@76 208 quit(Arg *arg)
garbeam@75 209 {
arg@302 210 readin = running = False;
garbeam@75 211 }
garbeam@75 212
garbeam@75 213 /*
garbeam@84 214 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 215 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
garbeam@84 216 * default error handler, which calls exit().
garbeam@0 217 */
garbeam@10 218 int
garbeam@75 219 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 220 {
garbeam@75 221 if(ee->error_code == BadWindow
arg@123 222 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 223 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 224 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 225 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 226 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@123 227 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
garbeam@0 228 return 0;
garbeam@34 229 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 230 ee->request_code, ee->error_code);
garbeam@75 231 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 232 }
garbeam@27 233
garbeam@0 234 int
garbeam@0 235 main(int argc, char *argv[])
garbeam@0 236 {
arg@333 237 int r, xfd;
garbeam@59 238 fd_set rd;
garbeam@0 239
arg@137 240 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@137 241 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
arg@137 242 exit(EXIT_SUCCESS);
garbeam@0 243 }
arg@137 244 else if(argc != 1)
arg@137 245 eprint("usage: dwm [-v]\n");
garbeam@0 246
garbeam@0 247 dpy = XOpenDisplay(0);
garbeam@0 248 if(!dpy)
arg@197 249 eprint("dwm: cannot open display\n");
garbeam@0 250
arg@265 251 xfd = ConnectionNumber(dpy);
garbeam@0 252 screen = DefaultScreen(dpy);
garbeam@0 253 root = RootWindow(dpy, screen);
garbeam@0 254
garbeam@75 255 otherwm = False;
garbeam@75 256 XSetErrorHandler(xerrorstart);
arg@197 257 /* this causes an error if some other window manager is running */
garbeam@0 258 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 259 XSync(dpy, False);
garbeam@0 260
garbeam@75 261 if(otherwm)
garbeam@75 262 eprint("dwm: another window manager is already running\n");
garbeam@0 263
arg@292 264 XSync(dpy, False);
garbeam@78 265 XSetErrorHandler(NULL);
garbeam@75 266 xerrorxlib = XSetErrorHandler(xerror);
arg@275 267 XSync(dpy, False);
garbeam@0 268
arg@333 269 setup();
garbeam@74 270 drawstatus();
garbeam@75 271 scan();
garbeam@3 272
arg@214 273 /* main event loop, also reads status text from stdin */
arg@242 274 XSync(dpy, False);
arg@292 275 procevent();
arg@302 276 readin = True;
garbeam@5 277 while(running) {
garbeam@59 278 FD_ZERO(&rd);
arg@164 279 if(readin)
arg@164 280 FD_SET(STDIN_FILENO, &rd);
arg@265 281 FD_SET(xfd, &rd);
arg@333 282 r = select(xfd + 1, &rd, NULL, NULL, NULL);
arg@333 283 if((r == -1) && (errno == EINTR))
garbeam@59 284 continue;
arg@333 285 if(r > 0) {
arg@164 286 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
arg@164 287 readin = NULL != fgets(stext, sizeof(stext), stdin);
arg@164 288 if(readin)
arg@164 289 stext[strlen(stext) - 1] = 0;
arg@162 290 else
arg@164 291 strcpy(stext, "broken pipe");
garbeam@74 292 drawstatus();
garbeam@59 293 }
garbeam@59 294 }
arg@333 295 else if(r < 0)
arg@316 296 eprint("select failed\n");
arg@293 297 procevent();
garbeam@5 298 }
garbeam@0 299 cleanup();
garbeam@0 300 XCloseDisplay(dpy);
garbeam@0 301
garbeam@0 302 return 0;
garbeam@0 303 }