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Add support for changing the gamma value

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This commit is contained in:
András Mohari
2013-11-13 20:54:09 +01:00
parent 450c1ed9b5
commit 0353e6eea2
9 changed files with 91 additions and 3 deletions
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15
options.c
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@ -33,7 +33,7 @@ const options_t *options = (const options_t*) &_options;
void print_usage(void)
{
printf("usage: sxiv [-bcdFfhioqrstvZ] [-g GEOMETRY] [-n NUM] "
printf("usage: sxiv [-bcdFfhioqrstvZ] [-g GEOMETRY] [-G GAMMA] [-n NUM] "
"[-N name] [-z ZOOM] FILES...\n");
}
@ -44,7 +44,7 @@ void print_version(void)
void parse_options(int argc, char **argv)
{
int opt, t;
int opt, t, gamma;
_options.from_stdin = false;
_options.to_stdout = false;
@ -53,6 +53,7 @@ void parse_options(int argc, char **argv)
_options.scalemode = SCALE_MODE;
_options.zoom = 1.0;
_options.gamma = 0;
_options.fixed_win = false;
_options.fullscreen = false;
@ -64,7 +65,7 @@ void parse_options(int argc, char **argv)
_options.thumb_mode = false;
_options.clean_cache = false;
while ((opt = getopt(argc, argv, "bcdFfg:hin:N:oqrstvZz:")) != -1) {
while ((opt = getopt(argc, argv, "bcdFfg:G:hin:N:oqrstvZz:")) != -1) {
switch (opt) {
case '?':
print_usage();
@ -87,6 +88,14 @@ void parse_options(int argc, char **argv)
case 'g':
_options.geometry = optarg;
break;
case 'G':
if (sscanf(optarg, "%d", &gamma) <= 0) {
fprintf(stderr, "sxiv: invalid argument for option -G: %s\n",
optarg);
exit(EXIT_FAILURE);
}
_options.gamma = gamma;
break;
case 'h':
print_usage();
exit(EXIT_SUCCESS);