labwc/src/theme/theme.c
2020-08-03 20:56:38 +01:00

113 lines
2.4 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdbool.h>
#include <glib.h>
#include "theme/theme.h"
#include "theme/theme-dir.h"
static int hex_to_dec(char c)
{
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
return 0;
}
static void parse_hexstr(const char *hex, float *rgba)
{
if (!hex || hex[0] != '#' || strlen(hex) < 7)
return;
rgba[0] = (hex_to_dec(hex[1]) * 16 + hex_to_dec(hex[2])) / 255.0;
rgba[1] = (hex_to_dec(hex[3]) * 16 + hex_to_dec(hex[4])) / 255.0;
rgba[2] = (hex_to_dec(hex[5]) * 16 + hex_to_dec(hex[6])) / 255.0;
if (strlen(hex) > 7)
rgba[3] = atoi(hex + 7) / 100.0;
else
rgba[3] = 1.0;
}
static bool match(const gchar *pattern, const gchar *string)
{
return (bool)g_pattern_match_simple(pattern, string);
}
static void entry(const char *key, const char *value)
{
if (!key || !value)
return;
if (match(key, "window.active.title.bg.color"))
parse_hexstr(value, theme.window_active_title_bg_color);
if (match(key, "window.active.handle.bg.color"))
parse_hexstr(value, theme.window_active_handle_bg_color);
if (match(key, "window.inactive.title.bg.color"))
parse_hexstr(value, theme.window_inactive_title_bg_color);
}
static void rtrim(char **s)
{
size_t len = strlen(*s);
if (!len)
return;
char *end = *s + len - 1;
while (end >= *s && isspace(*end))
end--;
*(end + 1) = '\0';
}
static char *strstrip(char *s)
{
rtrim(&s);
while (isspace(*s))
s++;
return s;
}
static void parse_config_line(char *line, char **key, char **value)
{
char *p = strchr(line, ':');
if (!p)
return;
*p = '\0';
*key = strstrip(line);
*value = strstrip(++p);
}
static void process_line(char *line)
{
if (line[0] == '\0' || line[0] == '#')
return;
char *key = NULL, *value = NULL;
parse_config_line(line, &key, &value);
entry(key, value);
}
void theme_read(const char *theme_name)
{
FILE *stream;
char *line = NULL;
size_t len = 0;
char themerc[4096];
snprintf(themerc, sizeof(themerc), "%s/themerc", theme_dir(theme_name));
fprintf(stderr, "info: read themerc (%s)\n", themerc);
stream = fopen(themerc, "r");
if (!stream) {
fprintf(stderr, "warn: cannot read (%s)\n", themerc);
return;
}
while (getline(&line, &len, stream) != -1) {
char *p = strrchr(line, '\n');
if (p)
*p = '\0';
process_line(line);
}
free(line);
fclose(stream);
}