dwm-meillo

annotate main.c @ 265:573b1c4a71a4

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reducing ConnectionNumber calls to a bare minimum
author Anselm R.Garbe <arg@10ksloc.org>
date Mon, 14 Aug 2006 07:23:46 +0200
parents d659a2dce2b5
children e8aa8f6e3481
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>
garbeam@0 14 #include <X11/Xatom.h>
garbeam@0 15 #include <X11/Xproto.h>
garbeam@0 16
garbeam@84 17 /* static */
garbeam@0 18
arg@123 19 static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@75 20 static Bool otherwm;
garbeam@0 21
garbeam@0 22 static void
garbeam@76 23 cleanup()
garbeam@76 24 {
garbeam@76 25 while(sel) {
arg@99 26 resize(sel, True, TopLeft);
garbeam@76 27 unmanage(sel);
garbeam@76 28 }
garbeam@76 29 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@76 30 }
garbeam@0 31
garbeam@0 32 static void
garbeam@75 33 scan()
garbeam@0 34 {
garbeam@0 35 unsigned int i, num;
arg@123 36 Window *wins, d1, d2;
garbeam@0 37 XWindowAttributes wa;
garbeam@0 38
garbeam@0 39 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 40 for(i = 0; i < num; i++) {
garbeam@0 41 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 42 continue;
garbeam@0 43 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 44 continue;
garbeam@0 45 if(wa.map_state == IsViewable)
garbeam@10 46 manage(wins[i], &wa);
garbeam@0 47 }
garbeam@0 48 }
garbeam@0 49 if(wins)
garbeam@0 50 XFree(wins);
garbeam@0 51 }
garbeam@0 52
garbeam@13 53 static int
garbeam@13 54 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13 55 {
arg@123 56 int status, format;
arg@123 57 unsigned long res, extra;
garbeam@13 58 Atom real;
garbeam@13 59
garbeam@13 60 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 61 &res, &extra, prop);
garbeam@13 62
garbeam@13 63 if(status != Success || *prop == 0) {
garbeam@13 64 return 0;
garbeam@13 65 }
garbeam@13 66 if(res == 0) {
garbeam@13 67 free((void *) *prop);
garbeam@13 68 }
garbeam@13 69 return res;
garbeam@13 70 }
garbeam@13 71
garbeam@76 72 /*
garbeam@76 73 * Startup Error handler to check if another window manager
garbeam@76 74 * is already running.
garbeam@76 75 */
garbeam@76 76 static int
garbeam@76 77 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 78 {
garbeam@76 79 otherwm = True;
garbeam@76 80 return -1;
garbeam@76 81 }
garbeam@76 82
garbeam@84 83 /* extern */
garbeam@84 84
garbeam@84 85 char stext[1024];
arg@262 86 Bool *seltag;
garbeam@84 87 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
arg@178 88 unsigned int ntags;
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@203 105 Atom *protocols;
garbeam@13 106
arg@203 107 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L,
arg@203 108 ((unsigned char **)&protocols));
garbeam@13 109 if(res <= 0) {
garbeam@13 110 return protos;
garbeam@13 111 }
garbeam@13 112 for(i = 0; i < res; i++) {
garbeam@77 113 if(protocols[i] == wmatom[WMDelete])
arg@157 114 protos |= PROTODELWIN;
garbeam@13 115 }
garbeam@13 116 free((char *) protocols);
garbeam@13 117 return protos;
garbeam@13 118 }
garbeam@13 119
garbeam@13 120 void
garbeam@74 121 sendevent(Window w, Atom a, long value)
garbeam@13 122 {
garbeam@13 123 XEvent e;
garbeam@13 124
garbeam@13 125 e.type = ClientMessage;
garbeam@13 126 e.xclient.window = w;
garbeam@13 127 e.xclient.message_type = a;
garbeam@13 128 e.xclient.format = 32;
garbeam@13 129 e.xclient.data.l[0] = value;
garbeam@13 130 e.xclient.data.l[1] = CurrentTime;
garbeam@13 131 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 132 XSync(dpy, False);
garbeam@13 133 }
garbeam@13 134
garbeam@76 135 void
garbeam@76 136 quit(Arg *arg)
garbeam@75 137 {
garbeam@76 138 running = False;
garbeam@75 139 }
garbeam@75 140
garbeam@75 141 /*
garbeam@84 142 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 143 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
garbeam@84 144 * default error handler, which calls exit().
garbeam@0 145 */
garbeam@10 146 int
garbeam@75 147 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 148 {
garbeam@75 149 if(ee->error_code == BadWindow
arg@123 150 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 151 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 152 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 153 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 154 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@123 155 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
garbeam@0 156 return 0;
garbeam@34 157 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 158 ee->request_code, ee->error_code);
garbeam@75 159 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 160 }
garbeam@27 161
garbeam@0 162 int
garbeam@0 163 main(int argc, char *argv[])
garbeam@0 164 {
arg@265 165 int i, xfd;
arg@123 166 unsigned int mask;
garbeam@59 167 fd_set rd;
arg@164 168 Bool readin = True;
garbeam@0 169 Window w;
garbeam@5 170 XEvent ev;
arg@123 171 XSetWindowAttributes wa;
garbeam@0 172
arg@137 173 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@137 174 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
arg@137 175 exit(EXIT_SUCCESS);
garbeam@0 176 }
arg@137 177 else if(argc != 1)
arg@137 178 eprint("usage: dwm [-v]\n");
garbeam@0 179
garbeam@0 180 dpy = XOpenDisplay(0);
garbeam@0 181 if(!dpy)
arg@197 182 eprint("dwm: cannot open display\n");
garbeam@0 183
arg@265 184 xfd = ConnectionNumber(dpy);
garbeam@0 185 screen = DefaultScreen(dpy);
garbeam@0 186 root = RootWindow(dpy, screen);
garbeam@0 187
garbeam@75 188 otherwm = False;
garbeam@75 189 XSetErrorHandler(xerrorstart);
arg@197 190 /* this causes an error if some other window manager is running */
garbeam@0 191 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 192 XSync(dpy, False);
garbeam@0 193
garbeam@75 194 if(otherwm)
garbeam@75 195 eprint("dwm: another window manager is already running\n");
garbeam@0 196
garbeam@78 197 XSetErrorHandler(NULL);
garbeam@75 198 xerrorxlib = XSetErrorHandler(xerror);
garbeam@0 199
garbeam@0 200 /* init atoms */
garbeam@77 201 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@77 202 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@77 203 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@77 204 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@77 205 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
garbeam@77 206 PropModeReplace, (unsigned char *) netatom, NetLast);
garbeam@0 207
garbeam@0 208 /* init cursors */
garbeam@0 209 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 210 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 211 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 212
garbeam@73 213 grabkeys();
arg@191 214 initrregs();
garbeam@0 215
arg@178 216 for(ntags = 0; tags[ntags]; ntags++);
arg@262 217 seltag = emallocz(sizeof(Bool) * ntags);
arg@262 218 seltag[DEFTAG] = True;
arg@178 219
garbeam@5 220 /* style */
garbeam@74 221 dc.bg = getcolor(BGCOLOR);
garbeam@74 222 dc.fg = getcolor(FGCOLOR);
arg@237 223 dc.border = getcolor(BORDERCOLOR);
garbeam@74 224 setfont(FONT);
garbeam@5 225
garbeam@57 226 sx = sy = 0;
garbeam@57 227 sw = DisplayWidth(dpy, screen);
garbeam@57 228 sh = DisplayHeight(dpy, screen);
garbeam@57 229 mw = (sw * MASTERW) / 100;
garbeam@5 230
garbeam@57 231 wa.override_redirect = 1;
garbeam@57 232 wa.background_pixmap = ParentRelative;
garbeam@58 233 wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57 234
garbeam@57 235 bx = by = 0;
garbeam@57 236 bw = sw;
garbeam@57 237 dc.h = bh = dc.font.height + 4;
garbeam@57 238 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57 239 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57 240 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57 241 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57 242 XMapRaised(dpy, barwin);
garbeam@57 243
garbeam@60 244 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60 245 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@222 246
arg@222 247 strcpy(stext, "dwm-"VERSION);
garbeam@74 248 drawstatus();
garbeam@60 249
garbeam@57 250 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21 251
arg@123 252 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
garbeam@0 253 wa.cursor = cursor[CurNormal];
garbeam@0 254 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 255
garbeam@75 256 scan();
garbeam@3 257
arg@214 258 /* main event loop, also reads status text from stdin */
arg@242 259 XSync(dpy, False);
garbeam@5 260 while(running) {
garbeam@59 261 FD_ZERO(&rd);
arg@164 262 if(readin)
arg@164 263 FD_SET(STDIN_FILENO, &rd);
arg@265 264 FD_SET(xfd, &rd);
garbeam@59 265
arg@265 266 i = select(xfd + 1, &rd, 0, 0, 0);
garbeam@59 267 if(i == -1 && errno == EINTR)
garbeam@59 268 continue;
garbeam@59 269 if(i < 0)
garbeam@75 270 eprint("select failed\n");
garbeam@59 271 else if(i > 0) {
arg@265 272 if(FD_ISSET(xfd, &rd)) {
garbeam@64 273 while(XPending(dpy)) {
garbeam@64 274 XNextEvent(dpy, &ev);
garbeam@64 275 if(handler[ev.type])
garbeam@64 276 (handler[ev.type])(&ev); /* call handler */
garbeam@64 277 }
garbeam@59 278 }
arg@164 279 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
arg@164 280 readin = NULL != fgets(stext, sizeof(stext), stdin);
arg@164 281 if(readin)
arg@164 282 stext[strlen(stext) - 1] = 0;
arg@162 283 else
arg@164 284 strcpy(stext, "broken pipe");
garbeam@74 285 drawstatus();
garbeam@59 286 }
garbeam@59 287 }
garbeam@5 288 }
garbeam@0 289
garbeam@0 290 cleanup();
garbeam@0 291 XCloseDisplay(dpy);
garbeam@0 292
garbeam@0 293 return 0;
garbeam@0 294 }