mdw@git.distorted.org.uk Git - xtoys/blob - xqueryptr.c

   1 /* -*-c-*-
   2  *
   3  * Query the current X pointer state
   4  *
   5  * (c) 2023 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of the Edgeware X tools collection.
  11  *
  12  * X tools is free software: you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License as published by the
  14  * Free Software Foundation; either version 2 of the License, or (at your
  15  * option) any later version.
  16  *
  17  * X tools is distributed in the hope that it will be useful, but WITHOUT
  18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20  * for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with X tools.  If not, write to the Free Software Foundation,
  24  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25  */
  26
  27 /*----- Header files ------------------------------------------------------*/
  28
  29 #include <errno.h>
  30 #include <limits.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33
  34 #include <X11/Xlib.h>
  35
  36 #include <mLib/alloc.h>
  37 #include <mLib/macros.h>
  38 #include <mLib/mdwopt.h>
  39 #include <mLib/quis.h>
  40 #include <mLib/report.h>
  41
  42 /*----- Help and version information --------------------------------------*/
  43
  44 static void version(void)
  45   { pquis(stdout, "$ version " VERSION "\n"); }
  46
  47 static void usage(FILE *fp)
  48   { pquis(fp, "Usage: $ [-d DISPLAY] X Y\n"); }
  49
  50 static void help(void)
  51 {
  52   version(); putchar('\n');
  53   usage(stdout);
  54   fputs("\n\
  55 Report the current pointer state, as SCREEN X Y MASK.\n\
  56 \n\
  57 Command-line options:\n\
  58 \n\
  59 -h, --help                      Display this help.\n\
  60 -v, --version                   Display program's version number.\n\
  61 -u, --usage                     Display short usage summary.\n\
  62 \n\
  63 -d, --display=DISPLAY           Connect to X DISPLAY.\n",
  64         stdout);
  65 }
  66
  67 /*----- Main program ------------------------------------------------------*/
  68
  69 int main(int argc, char *argv[])
  70 {
  71   const char *display = 0;
  72   Display *dpy = 0;
  73   Window root, child;
  74   int i, screen, x, y, winx, winy;
  75   unsigned mask;
  76
  77   unsigned f = 0;
  78 #define f_bogus 1u
  79
  80   ego(argv[0]);
  81
  82   /* Parse arguments. */
  83   for (;;) {
  84     static struct option opt[] = {
  85       { "help",         0,                      0,      'h' },
  86       { "usage",        0,                      0,      'u' },
  87       { "version",      0,                      0,      'v' },
  88       { "display",      OPTF_ARGREQ,            0,      'd' },
  89       { 0,              0,                      0,      0 }
  90     };
  91
  92     i = mdwopt(argc, argv, "huvd:", opt, 0, 0, 0); if (i < 0) break;
  93     switch (i) {
  94       case 'h': help(); exit(0);
  95       case 'u': usage(stdout); exit(0);
  96       case 'v': version(); exit(0);
  97       case 'd': display = optarg; break;
  98       default: f |= f_bogus; break;
  99     }
 100   }
 101   if ((f&f_bogus) || argc - optind != 0) {
 102     usage(stderr);
 103     exit(EXIT_FAILURE);
 104   }
 105
 106   /* Open the display. */
 107   if ((dpy = XOpenDisplay(display)) == 0)
 108     die(EXIT_FAILURE, "couldn't open display");
 109
 110   /* Find and print where the pointer is. */
 111   XQueryPointer(dpy, DefaultRootWindow(dpy), &root, &child,
 112                 &x, &y, &winx, &winy, &mask);
 113   for (i = 0; i < ScreenCount(dpy); i++)
 114     if (root == RootWindow(dpy, i)) { screen = i; goto found_root; }
 115   die(2, "pointer is on unknown root window 0x%08lx", (unsigned long)root);
 116 found_root:
 117   printf("%d %d %d 0x%08x\n", screen, x, y, mask);
 118
 119   /* Done. */
 120   XCloseDisplay(dpy);
 121   return (0);
 122 }
 123
 124 /*----- That's all, folks -------------------------------------------------*/