Dogcows Code - chaz/openbox/blob - otk/color.hh

   1 // -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
   2 #ifndef __color_hh
   3 #define __color_hh
   4
   5 extern "C" {
   6 #include <X11/Xlib.h>
   7 }
   8
   9 #include <map>
  10 #include <string>
  11
  12 namespace otk {
  13
  14 class Color {
  15 public:
  16   Color(unsigned int _screen = ~(0u));
  17   Color(int _r, int _g, int _b, unsigned int _screen = ~(0u));
  18   Color(const std::string &_name, unsigned int _screen = ~(0u));
  19   ~Color(void);
  20
  21   inline const std::string &name(void) const { return colorname; }
  22
  23   inline int   red(void) const { return r; }
  24   inline int green(void) const { return g; }
  25   inline int  blue(void) const { return b; }
  26   void setRGB(int _r, int _g, int _b) {
  27     deallocate();
  28     r = _r;
  29     g = _g;
  30     b = _b;
  31   }
  32
  33   inline unsigned int screen(void) const { return scrn; }
  34   void setScreen(unsigned int _screen = ~(0u));
  35
  36   inline bool isAllocated(void) const { return allocated; }
  37
  38   inline bool isValid(void) const { return r != -1 && g != -1 && b != -1; }
  39
  40   unsigned long pixel(void) const;
  41
  42   // operators
  43 #ifndef SWIG
  44   Color &operator=(const Color &c);
  45 #endif
  46   inline bool operator==(const Color &c) const
  47   { return (r == c.r && b == c.b && b == c.b); }
  48   inline bool operator!=(const Color &c) const
  49   { return (! operator==(c)); }
  50
  51   static void cleanupColorCache(void);
  52
  53 private:
  54   void parseColorName(void);
  55   void allocate(void);
  56   void deallocate(void);
  57
  58   bool allocated;
  59   int r, g, b;
  60   unsigned long p;
  61   unsigned int scrn;
  62   std::string colorname;
  63
  64   // global color allocator/deallocator
  65   struct RGB {
  66     const int screen;
  67     const int r, g, b;
  68
  69     RGB(void) : screen(~(0u)), r(-1), g(-1), b(-1) { }
  70     RGB(const int b, const int x, const int y, const int z)
  71       : screen(b), r(x), g(y), b(z) {}
  72     RGB(const RGB &x)
  73       : screen(x.screen), r(x.r), g(x.g), b(x.b) {}
  74
  75     inline bool operator==(const RGB &x) const {
  76       return screen == x.screen &&
  77              r == x.r && g == x.g && b == x.b;
  78     }
  79
  80     inline bool operator<(const RGB &x) const {
  81       unsigned long p1, p2;
  82       p1 = (screen << 24 | r << 16 | g << 8 | b) & 0x00ffffff;
  83       p2 = (x.screen << 24 | x.r << 16 | x.g << 8 | x.b) & 0x00ffffff;
  84       return p1 < p2;
  85     }
  86   };
  87   struct PixelRef {
  88     const unsigned long p;
  89     unsigned int count;
  90     inline PixelRef(void) : p(0), count(0) { }
  91     inline PixelRef(const unsigned long x) : p(x), count(1) { }
  92   };
  93   typedef std::map<RGB,PixelRef> ColorCache;
  94   typedef ColorCache::value_type ColorCacheItem;
  95   static ColorCache colorcache;
  96   static bool cleancache;
  97   static void doCacheCleanup(void);
  98 };
  99
 100 }
 101
 102 #endif // __color_hh