git.sesse.net Git - ccbs/blob - bigscreen/theme.cpp

   1 #include <cstdio>
   2 #include <cstring>
   3 #include <cstdlib>
   4 #include <map>
   5 #include <string>
   6 #include <stdexcept>
   7
   8 std::map<std::string, std::string> config;
   9
  10 void read_config(const char *filename)
  11 {
  12         FILE *fp = fopen(filename, "r");
  13         if (fp == NULL)
  14                 throw std::runtime_error("Couldn't open theme file.");
  15
  16         while (!feof(fp)) {
  17                 char buf[1024];
  18                 if (fgets(buf, 1024, fp) == NULL) {
  19                         break;
  20                 }
  21
  22                 char *ptr = strchr(buf, '\n');
  23                 if (ptr != NULL)
  24                         *ptr = 0;
  25
  26                 ptr = strchr(buf, '\r');
  27                 if (ptr != NULL)
  28                         *ptr = 0;
  29
  30                 ptr = strchr(buf, '#');
  31                 if (ptr != NULL)
  32                         *ptr = 0;
  33
  34                 int len = strlen(buf);
  35                 while (len > 0 && (buf[len - 1] == ' ' || buf[len - 1] == '\t')) {
  36                         buf[--len] = 0;
  37                 }
  38
  39                 if (len == 0) {
  40                         continue;
  41                 }
  42
  43                 char key[1024], value[1024];
  44                 if (sscanf(buf, "%[^=] = %[^=]", key, value) != 2) {
  45                         fprintf(stderr, "Warning: Ignoring malformed line '%s'.\n", buf);
  46                         continue;
  47                 }
  48
  49                 config[key] = value;
  50         }
  51         fclose(fp);
  52 }
  53
  54 void init_theme()
  55 {
  56         read_config("theme.config");
  57         try {
  58                 read_config("theme.config.local");
  59         } catch (...) {
  60                 // Ignore.
  61         }
  62 }
  63
  64 std::string get_theme_config(const std::string &key, const std::string subkey)
  65 {
  66         if (config.count(key + "." + subkey)) {
  67                 return config[key + "." + subkey];
  68         }
  69
  70         std::string modkey = key;
  71         while (modkey.find_last_of(".") != std::string::npos) {
  72                 modkey.resize(modkey.find_last_of("."));
  73                 if (config.count(modkey + "." + subkey)) {
  74                         return config[modkey + "." + subkey];
  75                 }
  76         }
  77
  78         return config["default." + subkey];
  79 }
  80
  81 void fill_background(unsigned char *buf, unsigned width, unsigned height)
  82 {
  83         int bg_r = atoi(get_theme_config("background", "red").c_str());
  84         int bg_g = atoi(get_theme_config("background", "green").c_str());
  85         int bg_b = atoi(get_theme_config("background", "blue").c_str());
  86
  87         unsigned char *ptr = buf;
  88         for (unsigned i = 0; i < width * height; ++i) {
  89                 *ptr++ = bg_b;
  90                 *ptr++ = bg_g;
  91                 *ptr++ = bg_r;
  92                 *ptr++ = 0;
  93         }
  94 }