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Add background alpha support

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Daniel Eklöf 2019-08-15 18:15:43 +02:00
parent 9e7106018e
commit 9fe6e8cc48
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GPG key ID: 5BBD4992C116573F
7 changed files with 35 additions and 2 deletions
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25
config.c
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@ -119,6 +119,19 @@ str_to_ulong(const char *s, int base, unsigned long *res)
return errno == 0 && *end == '\0';
}
static bool
str_to_double(const char *s, double *res)
{
if (s == NULL)
return false;
errno = 0;
char *end = NULL;
*res = strtod(s, &end);
return errno == 0 && *end == '\0';
}
static bool
str_to_color(const char *s, uint32_t *color, const char *path, int lineno)
{
@ -203,6 +216,17 @@ parse_section_colors(const char *key, const char *value, struct config *conf,
else if (strcmp(key, "bright5") == 0) color = &conf->colors.bright[5];
else if (strcmp(key, "bright6") == 0) color = &conf->colors.bright[6];
else if (strcmp(key, "bright7") == 0) color = &conf->colors.bright[7];
else if (strcmp(key, "alpha") == 0) {
double alpha;
if (!str_to_double(value, &alpha) || alpha < 0. || alpha > 1.) {
LOG_ERR("%s: %d: alpha: expected a value in the range 0.0-1.0",
path, lineno);
return false;
}
conf->colors.alpha = alpha;
return true;
}
else {
LOG_ERR("%s:%d: invalid key: %s", path, lineno, key);
@ -442,6 +466,7 @@ config_load(struct config *conf)
default_bright[6],
default_bright[7],
},
.alpha = 1.,
},
.cursor = {