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Write scales with as few digits as they need

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This commit is contained in:
Mars-Wave
2026-03-31 18:32:53 +02:00
parent eb836a99fb
commit 4636a71c8c
1 changed files with 14 additions and 1 deletions
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src/store.c
+14 -1
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@@ -389,6 +389,19 @@ static bool is_custom_mode(struct wd_head_config *output) {
return true;
}
static void format_scale(char *buf, size_t size, double scale) {
wl_fixed_t fixed = wl_fixed_from_double(scale);
scale = wl_fixed_to_double(fixed);
for (int digits = 0; digits <= 8; digits++) {
char format[8];
snprintf(format, sizeof(format), "%%.%df", digits);
g_ascii_formatd(buf, size, format, scale);
if (wl_fixed_from_double(g_ascii_strtod(buf, NULL)) == fixed) {
break;
}
}
}
static void append_settings(GString *str, struct wd_head_config *output,
const char *adaptive_sync) {
if (!output->enabled) {
@@ -405,7 +418,7 @@ static void append_settings(GString *str, struct wd_head_config *output,
g_string_append_printf(str, "@%sHz", refresh);
}
char scale[G_ASCII_DTOSTR_BUF_SIZE];
g_ascii_dtostr(scale, sizeof(scale), output->scale);
format_scale(scale, sizeof(scale), output->scale);
g_string_append_printf(str, " position %d,%d scale %s transform %s",
output->x, output->y, scale, transform_name(output->transform));
}