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annotate main.c @ 123:61490330e90a

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cleaned up code
author arg@10ksloc.org
date Thu, 20 Jul 2006 12:18:06 +0200
parents a19556fe83b5
children 1489f6b97714
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@76 7
garbeam@59 8 #include <errno.h>
garbeam@0 9 #include <stdio.h>
garbeam@0 10 #include <stdlib.h>
garbeam@57 11 #include <string.h>
garbeam@59 12 #include <unistd.h>
garbeam@0 13 #include <X11/cursorfont.h>
garbeam@0 14 #include <X11/Xatom.h>
garbeam@0 15 #include <X11/Xproto.h>
garbeam@0 16
garbeam@3 17
garbeam@84 18 /* static */
garbeam@0 19
arg@123 20 static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@75 21 static Bool otherwm;
garbeam@0 22
garbeam@0 23 static void
garbeam@76 24 cleanup()
garbeam@76 25 {
garbeam@76 26 while(sel) {
arg@99 27 resize(sel, True, TopLeft);
garbeam@76 28 unmanage(sel);
garbeam@76 29 }
garbeam@76 30 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@76 31 }
garbeam@0 32
garbeam@0 33 static void
garbeam@75 34 scan()
garbeam@0 35 {
garbeam@0 36 unsigned int i, num;
arg@123 37 Window *wins, d1, d2;
garbeam@0 38 XWindowAttributes wa;
garbeam@0 39
garbeam@0 40 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 41 for(i = 0; i < num; i++) {
garbeam@0 42 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 43 continue;
garbeam@0 44 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 45 continue;
garbeam@0 46 if(wa.map_state == IsViewable)
garbeam@10 47 manage(wins[i], &wa);
garbeam@0 48 }
garbeam@0 49 }
garbeam@0 50 if(wins)
garbeam@0 51 XFree(wins);
garbeam@0 52 }
garbeam@0 53
garbeam@13 54 static int
garbeam@13 55 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13 56 {
arg@123 57 int status, format;
arg@123 58 unsigned long res, extra;
garbeam@13 59 Atom real;
garbeam@13 60
garbeam@13 61 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 62 &res, &extra, prop);
garbeam@13 63
garbeam@13 64 if(status != Success || *prop == 0) {
garbeam@13 65 return 0;
garbeam@13 66 }
garbeam@13 67 if(res == 0) {
garbeam@13 68 free((void *) *prop);
garbeam@13 69 }
garbeam@13 70 return res;
garbeam@13 71 }
garbeam@13 72
garbeam@76 73 /*
garbeam@76 74 * Startup Error handler to check if another window manager
garbeam@76 75 * is already running.
garbeam@76 76 */
garbeam@76 77 static int
garbeam@76 78 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 79 {
garbeam@76 80 otherwm = True;
garbeam@76 81 return -1;
garbeam@76 82 }
garbeam@76 83
garbeam@84 84 /* extern */
garbeam@84 85
garbeam@84 86 char stext[1024];
garbeam@84 87 int tsel = Tdev; /* default tag */
garbeam@84 88 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
garbeam@84 89 Atom wmatom[WMLast], netatom[NetLast];
garbeam@84 90 Bool running = True;
garbeam@84 91 Bool issel = True;
garbeam@84 92 Client *clients = NULL;
garbeam@84 93 Client *sel = NULL;
garbeam@84 94 Cursor cursor[CurLast];
garbeam@84 95 Display *dpy;
garbeam@84 96 DC dc = {0};
garbeam@84 97 Window root, barwin;
garbeam@76 98
garbeam@13 99 int
garbeam@75 100 getproto(Window w)
garbeam@13 101 {
garbeam@13 102 int protos = 0;
garbeam@13 103 int i;
arg@123 104 long res;
arg@123 105 unsigned char *protocols;
garbeam@13 106
garbeam@77 107 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
garbeam@13 108 if(res <= 0) {
garbeam@13 109 return protos;
garbeam@13 110 }
garbeam@13 111 for(i = 0; i < res; i++) {
garbeam@77 112 if(protocols[i] == wmatom[WMDelete])
garbeam@13 113 protos |= WM_PROTOCOL_DELWIN;
garbeam@13 114 }
garbeam@13 115 free((char *) protocols);
garbeam@13 116 return protos;
garbeam@13 117 }
garbeam@13 118
garbeam@13 119 void
garbeam@74 120 sendevent(Window w, Atom a, long value)
garbeam@13 121 {
garbeam@13 122 XEvent e;
garbeam@13 123
garbeam@13 124 e.type = ClientMessage;
garbeam@13 125 e.xclient.window = w;
garbeam@13 126 e.xclient.message_type = a;
garbeam@13 127 e.xclient.format = 32;
garbeam@13 128 e.xclient.data.l[0] = value;
garbeam@13 129 e.xclient.data.l[1] = CurrentTime;
garbeam@13 130 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 131 XSync(dpy, False);
garbeam@13 132 }
garbeam@13 133
garbeam@76 134 void
garbeam@76 135 quit(Arg *arg)
garbeam@75 136 {
garbeam@76 137 running = False;
garbeam@75 138 }
garbeam@75 139
garbeam@75 140 /*
garbeam@84 141 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 142 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
garbeam@84 143 * default error handler, which calls exit().
garbeam@0 144 */
garbeam@10 145 int
garbeam@75 146 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 147 {
garbeam@75 148 if(ee->error_code == BadWindow
arg@123 149 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 150 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 151 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 152 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 153 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@123 154 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
garbeam@0 155 return 0;
garbeam@34 156 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 157 ee->request_code, ee->error_code);
garbeam@75 158 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 159 }
garbeam@27 160
garbeam@0 161 int
garbeam@0 162 main(int argc, char *argv[])
garbeam@0 163 {
garbeam@59 164 int i, n;
arg@123 165 unsigned int mask;
garbeam@59 166 fd_set rd;
garbeam@65 167 Bool readstdin = True;
garbeam@0 168 Window w;
garbeam@5 169 XEvent ev;
arg@123 170 XSetWindowAttributes wa;
garbeam@0 171
garbeam@0 172 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0 173 switch (argv[i][1]) {
garbeam@0 174 default:
garbeam@76 175 eprint("usage: dwm [-v]\n");
garbeam@0 176 break;
garbeam@92 177 case 'v':
garbeam@92 178 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
garbeam@92 179 exit(EXIT_SUCCESS);
garbeam@92 180 break;
garbeam@0 181 }
garbeam@0 182 }
garbeam@0 183
garbeam@0 184 dpy = XOpenDisplay(0);
garbeam@0 185 if(!dpy)
garbeam@75 186 eprint("dwm: cannot connect X server\n");
garbeam@0 187
garbeam@0 188 screen = DefaultScreen(dpy);
garbeam@0 189 root = RootWindow(dpy, screen);
garbeam@0 190
garbeam@0 191 /* check if another WM is already running */
garbeam@75 192 otherwm = False;
garbeam@75 193 XSetErrorHandler(xerrorstart);
garbeam@0 194 /* this causes an error if some other WM is running */
garbeam@0 195 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 196 XSync(dpy, False);
garbeam@0 197
garbeam@75 198 if(otherwm)
garbeam@75 199 eprint("dwm: another window manager is already running\n");
garbeam@0 200
garbeam@78 201 XSetErrorHandler(NULL);
garbeam@75 202 xerrorxlib = XSetErrorHandler(xerror);
garbeam@0 203
garbeam@0 204 /* init atoms */
garbeam@77 205 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@77 206 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@77 207 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@77 208 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@77 209 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
garbeam@77 210 PropModeReplace, (unsigned char *) netatom, NetLast);
garbeam@0 211
garbeam@0 212 /* init cursors */
garbeam@0 213 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 214 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 215 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 216
garbeam@73 217 grabkeys();
garbeam@0 218
garbeam@5 219 /* style */
garbeam@74 220 dc.bg = getcolor(BGCOLOR);
garbeam@74 221 dc.fg = getcolor(FGCOLOR);
garbeam@74 222 dc.border = getcolor(BORDERCOLOR);
garbeam@74 223 setfont(FONT);
garbeam@5 224
garbeam@57 225 sx = sy = 0;
garbeam@57 226 sw = DisplayWidth(dpy, screen);
garbeam@57 227 sh = DisplayHeight(dpy, screen);
garbeam@57 228 mw = (sw * MASTERW) / 100;
garbeam@5 229
garbeam@57 230 wa.override_redirect = 1;
garbeam@57 231 wa.background_pixmap = ParentRelative;
garbeam@58 232 wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57 233
garbeam@57 234 bx = by = 0;
garbeam@57 235 bw = sw;
garbeam@57 236 dc.h = bh = dc.font.height + 4;
garbeam@57 237 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57 238 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57 239 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57 240 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57 241 XMapRaised(dpy, barwin);
garbeam@57 242
garbeam@60 243 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60 244 dc.gc = XCreateGC(dpy, root, 0, 0);
garbeam@74 245 drawstatus();
garbeam@60 246
garbeam@57 247 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21 248
arg@123 249 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
garbeam@0 250 wa.cursor = cursor[CurNormal];
garbeam@0 251 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 252
garbeam@57 253 strcpy(stext, "dwm-"VERSION);
garbeam@75 254 scan();
garbeam@3 255
garbeam@59 256 /* main event loop, reads status text from stdin as well */
garbeam@61 257 Mainloop:
garbeam@5 258 while(running) {
garbeam@59 259 FD_ZERO(&rd);
garbeam@65 260 if(readstdin)
garbeam@65 261 FD_SET(STDIN_FILENO, &rd);
garbeam@59 262 FD_SET(ConnectionNumber(dpy), &rd);
garbeam@59 263
garbeam@59 264 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
garbeam@59 265 if(i == -1 && errno == EINTR)
garbeam@59 266 continue;
garbeam@59 267 if(i < 0)
garbeam@75 268 eprint("select failed\n");
garbeam@59 269 else if(i > 0) {
garbeam@64 270 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
garbeam@64 271 while(XPending(dpy)) {
garbeam@64 272 XNextEvent(dpy, &ev);
garbeam@64 273 if(handler[ev.type])
garbeam@64 274 (handler[ev.type])(&ev); /* call handler */
garbeam@64 275 }
garbeam@59 276 }
garbeam@65 277 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
garbeam@59 278 i = n = 0;
garbeam@60 279 for(;;) {
garbeam@60 280 if((i = getchar()) == EOF) {
garbeam@65 281 /* broken pipe/end of producer */
garbeam@65 282 readstdin = False;
garbeam@65 283 strcpy(stext, "broken pipe");
garbeam@60 284 goto Mainloop;
garbeam@60 285 }
garbeam@60 286 if(i == '\n' || n >= sizeof(stext) - 1)
garbeam@60 287 break;
garbeam@59 288 stext[n++] = i;
garbeam@60 289 }
garbeam@59 290 stext[n] = 0;
garbeam@74 291 drawstatus();
garbeam@59 292 }
garbeam@59 293 }
garbeam@5 294 }
garbeam@0 295
garbeam@0 296 cleanup();
garbeam@0 297 XCloseDisplay(dpy);
garbeam@0 298
garbeam@0 299 return 0;
garbeam@0 300 }