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7f25aae9 MW |
1 | /* -*-c-*- |
2 | * | |
3 | * Warp pointer to a specific location | |
4 | * | |
5 | * (c) 2022 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) | |
22233ad6 | 48 | { pquis(fp, "Usage: $ [-r] [-d DISPLAY] X Y\n"); } |
7f25aae9 MW |
49 | |
50 | static void help(void) | |
51 | { | |
52 | version(); putchar('\n'); | |
53 | usage(stdout); | |
54 | fputs("\n\ | |
55 | Warp mouse pointer to position X, Y on the screen.\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\ | |
22233ad6 MW |
63 | -d, --display=DISPLAY Connect to X DISPLAY.\n\ |
64 | -r, --relative Move relative to its current position\n", | |
7f25aae9 MW |
65 | stdout); |
66 | } | |
67 | ||
68 | /*----- Main program ------------------------------------------------------*/ | |
69 | ||
70 | static int parse_int(const char *p) | |
71 | { | |
72 | char *q; | |
73 | int err; | |
74 | long i; | |
75 | ||
76 | err = errno; errno = 0; | |
77 | if (!*p || ISSPACE(*p)) goto bad; | |
78 | i = strtol(p, &q, 0); | |
79 | if (err || *q || i < INT_MIN || i > INT_MAX) goto bad; | |
80 | return ((int)i); | |
81 | ||
82 | bad: | |
83 | die(1, "bad integer `%s'", p); | |
84 | } | |
85 | ||
86 | int main(int argc, char *argv[]) | |
87 | { | |
88 | const char *display = 0; | |
89 | Display *dpy = 0; | |
90 | int sc; | |
91 | Window w; | |
92 | char **fixups; int nfixups, i; | |
93 | int x, y, xmin, xmax, ymin, ymax, wd, ht; | |
94 | ||
95 | unsigned f = 0; | |
96 | #define f_bogus 1u | |
97 | #define f_relative 2u | |
98 | #define f_neg 4u | |
99 | ||
100 | ego(argv[0]); | |
101 | ||
102 | /* An initial pass over the argument vector. | |
103 | * | |
104 | * Negative numbers look like options, but we don't want them treated that | |
105 | * way. So we're going to hide them from the option parser for a bit. | |
106 | */ | |
107 | fixups = xmalloc(argc*sizeof(char *)); | |
108 | for (i = 0, nfixups = 0; i < argc; i++) | |
109 | if (argv[i][0] == '-' && ISDIGIT(argv[i][1])) | |
110 | { fixups[nfixups++] = argv[i]; argv[i][0] = '?'; } | |
111 | ||
112 | /* Parse arguments. */ | |
113 | for (;;) { | |
114 | static struct option opt[] = { | |
115 | { "help", 0, 0, 'h' }, | |
116 | { "usage", 0, 0, 'u' }, | |
117 | { "version", 0, 0, 'v' }, | |
118 | { "display", OPTF_ARGREQ, 0, 'd' }, | |
119 | { "relative", 0, 0, 'r' }, | |
120 | { 0, 0, 0, 0 } | |
121 | }; | |
122 | ||
123 | i = mdwopt(argc, argv, "huvd:r", opt, 0, 0, 0); if (i < 0) break; | |
124 | switch (i) { | |
125 | case 'h': help(); exit(0); | |
126 | case 'u': usage(stdout); exit(0); | |
127 | case 'v': version(); exit(0); | |
128 | case 'd': display = optarg; break; | |
129 | case 'r': f |= f_relative; break; | |
130 | default: f |= f_bogus; break; | |
131 | } | |
132 | } | |
133 | if ((f&f_bogus) || argc - optind != 2) { | |
134 | usage(stderr); | |
135 | exit(EXIT_FAILURE); | |
136 | } | |
137 | ||
138 | /* Undo the fixups and fish out the numbers. */ | |
139 | for (i = 0; i < nfixups; i++) *fixups[i] = '-'; | |
140 | x = parse_int(argv[optind]); | |
141 | y = parse_int(argv[optind + 1]); | |
142 | ||
143 | /* Open the display and the screen size. */ | |
144 | if ((dpy = XOpenDisplay(display)) == 0) | |
145 | die(EXIT_FAILURE, "couldn't open display"); | |
146 | sc = DefaultScreen(dpy); | |
147 | wd = DisplayWidth(dpy, sc); | |
148 | ht = DisplayHeight(dpy, sc); | |
149 | ||
150 | /* Interpret the coordinates and check that they're in range. */ | |
151 | if (f&f_relative) { | |
152 | w = None; | |
153 | xmin = -wd + 1; ymin = -ht + 1; xmax = wd - 1; ymax = ht - 1; | |
154 | } else { | |
155 | if (x < 0) x += wd; | |
156 | if (y < 0) y += ht; | |
157 | w = RootWindow(dpy, sc); | |
158 | xmin = ymin = 0; xmax = wd - 1; ymax = ht - 1; | |
159 | } | |
160 | if (x < xmin || x > xmax || y < ymin || y > ymax) | |
161 | die(1, "coordinates out of range"); | |
162 | ||
163 | /* Do the work. */ | |
164 | XWarpPointer(dpy, None, w, 0, 0, 0, 0, x, y); | |
165 | ||
166 | /* Done. */ | |
167 | XCloseDisplay(dpy); | |
168 | return (0); | |
169 | ||
170 | #undef f_bogus | |
171 | #undef f_relative | |
172 | } | |
173 | ||
174 | /*----- That's all, folks -------------------------------------------------*/ |