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 class BaseDisplay;
  13
  14 class BColor {
  15 public:
  16   BColor(const BaseDisplay * const _display = 0, unsigned int _screen = ~(0u));
  17   BColor(int _r, int _g, int _b,
  18          const BaseDisplay * const _display, unsigned int _screen = ~(0u));
  19   BColor(const std::string &_name,
  20          const BaseDisplay * const _display, unsigned int _screen = ~(0u));
  21   ~BColor(void);
  22
  23   inline const std::string &name(void) const { return colorname; }
  24
  25   inline int   red(void) const { return r; }
  26   inline int green(void) const { return g; }
  27   inline int  blue(void) const { return b; }
  28   void setRGB(int _r, int _g, int _b) {
  29     deallocate();
  30     r = _r;
  31     g = _g;
  32     b = _b;
  33   }
  34
  35   inline const BaseDisplay *display(void) const { return dpy; }
  36   inline unsigned int screen(void) const { return scrn; }
  37   void setDisplay(const BaseDisplay * const _display,
  38                   unsigned int _screen = ~(0u));
  39
  40   inline bool isAllocated(void) const { return allocated; }
  41
  42   inline bool isValid(void) const { return r != -1 && g != -1 && b != -1; }
  43
  44   unsigned long pixel(void) const;
  45
  46   // operators
  47   BColor &operator=(const BColor &c);
  48   inline bool operator==(const BColor &c) const
  49   { return (r == c.r && b == c.b && b == c.b); }
  50   inline bool operator!=(const BColor &c) const
  51   { return (! operator==(c)); }
  52
  53   static void cleanupColorCache(void);
  54
  55 private:
  56   void parseColorName(void);
  57   void allocate(void);
  58   void deallocate(void);
  59
  60   bool allocated;
  61   int r, g, b;
  62   unsigned long p;
  63   const BaseDisplay *dpy;
  64   unsigned int scrn;
  65   std::string colorname;
  66
  67   // global color allocator/deallocator
  68   struct RGB {
  69     const BaseDisplay* const display;
  70     const unsigned int screen;
  71     const int r, g, b;
  72
  73     RGB(void) : display(0), screen(~(0u)), r(-1), g(-1), b(-1) { }
  74     RGB(const BaseDisplay * const a, const unsigned int b,
  75         const int x, const int y, const int z)
  76       : display(a), screen(b), r(x), g(y), b(z) {}
  77     RGB(const RGB &x)
  78       : display(x.display), screen(x.screen), r(x.r), g(x.g), b(x.b) {}
  79
  80     inline bool operator==(const RGB &x) const {
  81       return display == x.display &&
  82               screen == x.screen &&
  83                    r == x.r && g == x.g && b == x.b;
  84     }
  85
  86     inline bool operator<(const RGB &x) const {
  87       unsigned long p1, p2;
  88       p1 = (screen << 24 | r << 16 | g << 8 | b) & 0x00ffffff;
  89       p2 = (x.screen << 24 | x.r << 16 | x.g << 8 | x.b) & 0x00ffffff;
  90       return p1 < p2;
  91     }
  92   };
  93   struct PixelRef {
  94     const unsigned long p;
  95     unsigned int count;
  96     inline PixelRef(void) : p(0), count(0) { }
  97     inline PixelRef(const unsigned long x) : p(x), count(1) { }
  98   };
  99   typedef std::map<RGB,PixelRef> ColorCache;
 100   typedef ColorCache::value_type ColorCacheItem;
 101   static ColorCache colorcache;
 102   static bool cleancache;
 103   static void doCacheCleanup(void);
 104 };
 105
 106 #endif // COLOR_HH