src/color.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * color.h
   4  *
   5  * Copyright 2007 Novell, Inc. (http://www.novell.com)
   6  *
   7  * See the LICENSE file included with the distribution for details.
   8  *
   9  */
  10
  11 #ifndef __MOON_COLOR_H__
  12 #define __MOON_COLOR_H__
  13
  14 #include <glib.h>
  15 #include <math.h>
  16
  17 /* @IncludeInKinds */
  18 /* @Namespace=System.Windows.Media */
  19 struct Color {
  20         double r, g, b, a;
  21
  22         Color () : r(0.0), g(0.0), b(0.0), a(0.0) {}
  23
  24         Color (guint32 argb)
  25         {
  26                 a = (argb >> 24) / 255.0f;
  27                 r = ((argb >> 16) & 0xFF) / 255.0f;
  28                 g = ((argb >> 8) & 0xFF) / 255.0f;
  29                 b = (argb & 0xFF) / 255.0f;
  30         }
  31
  32         Color (double r, double g, double b, double a)
  33         {
  34                 this->r = r;
  35                 this->g = g;
  36                 this->b = b;
  37                 this->a = a;
  38         }
  39
  40         Color operator+ (const Color &color)
  41         {
  42                 return Color (r + color.r,
  43                               g + color.g,
  44                               b + color.b,
  45                               a + color.a);
  46         }
  47
  48         Color operator- (const Color &color)
  49         {
  50                 return Color (r - color.r,
  51                               g - color.g,
  52                               b - color.b,
  53                               a - color.a);
  54         }
  55
  56         Color operator* (double v)
  57         {
  58                 return Color (r * v,
  59                               g * v,
  60                               b * v,
  61                               a * v);
  62         }
  63
  64         bool operator!= (const Color &v) const
  65         {
  66                 return (r != v.r || g != v.g || b != v.b || a != v.a);
  67         }
  68
  69         bool operator== (const Color &v) const
  70         {
  71                 return (fabs (r-v.r) < DBL_EPSILON && fabs (g-v.g) < DBL_EPSILON && fabs (b-v.b) < DBL_EPSILON && fabs (a-v.a) < DBL_EPSILON);
  72         }
  73 };
  74
  75 G_BEGIN_DECLS
  76
  77 const char *color_to_string (Color *color);
  78
  79 Color *color_from_str  (const char *name);
  80
  81 G_END_DECLS
  82
  83 #endif /* __MOON_COLOR_H__ */