from types import StringType, IntType, InstanceType #------------------------------------------------------------------------- # Color #------------------------------------------------------------------------- class Color: """This class is used to represent color. Components red, green, blue are in the range 0 (dark) to 1 (full intensity).""" def __init__(self, red=0, green=0, blue=0): "Initialize with red, green, blue in range [0-1]." _float = float d = self.__dict__ d["red"] = _float(red) d["green"] = _float(green) d["blue"] = _float(blue) def __setattr__(self, name, value): raise TypeError, "piddle.Color has read-only attributes" def __mul__(self,x): return Color(self.red*x, self.green*x, self.blue*x) def __rmul__(self,x): return Color(self.red*x, self.green*x, self.blue*x) def __div__(self,x): return Color(self.red/x, self.green/x, self.blue/x) def __rdiv__(self,x): return Color(self.red/x, self.green/x, self.blue/x) def __add__(self,x): return Color(self.red+x.red, self.green+x.green, self.blue+x.blue) def __sub__(self,x): return Color(self.red-x.red, self.green-x.green, self.blue-x.blue) def __repr__(self): return "Color(%1.2f,%1.2f,%1.2f)" % (self.red, self.green, self.blue) def __hash__(self): return hash( (self.red, self.green, self.blue) ) def __cmp__(self,other): try: dsum = 4*self.red-4*other.red + 2*self.green-2*other.green + self.blue-other.blue except: return -1 if dsum > 0: return 1 if dsum < 0: return -1 return 0 def toHexRGB(self): "Convert the color back to an integer suitable for the " "0xRRGGBB hex representation" r = int(0xFF * self.red) g = int(0xFF * self.green) b = int(0xFF * self.blue) # print "r= %d, g=%d, b = %d" % (r,b,g) return (r<<16) + (g<<8) + b def toHexStr(self): return "0x%.6x" % self.toHexRGB() def HexColor(val): """This class converts a hex string, or an actual integer number, into the corresponding color. E.g., in "AABBCC" or 0xAABBCC, AA is the red, BB is the green, and CC is the blue (00-FF).""" if type(val) == StringType: val = int(val,16) factor = 1.0 / 255 return Color(factor * ((val >> 16) & 0xFF), factor * ((val >> 8) & 0xFF), factor * (val & 0xFF)) # color constants -- mostly from HTML standard aliceblue = HexColor(0xF0F8FF) antiquewhite = HexColor(0xFAEBD7) aqua = HexColor(0x00FFFF) aquamarine = HexColor(0x7FFFD4) azure = HexColor(0xF0FFFF) beige = HexColor(0xF5F5DC) bisque = HexColor(0xFFE4C4) black = HexColor(0x000000) blanchedalmond = HexColor(0xFFEBCD) blue = HexColor(0x0000FF) blueviolet = HexColor(0x8A2BE2) brown = HexColor(0xA52A2A) burlywood = HexColor(0xDEB887) cadetblue = HexColor(0x5F9EA0) chartreuse = HexColor(0x7FFF00) chocolate = HexColor(0xD2691E) coral = HexColor(0xFF7F50) cornflower = HexColor(0x6495ED) cornsilk = HexColor(0xFFF8DC) crimson = HexColor(0xDC143C) cyan = HexColor(0x00FFFF) darkblue = HexColor(0x00008B) darkcyan = HexColor(0x008B8B) darkgoldenrod = HexColor(0xB8860B) darkgray = HexColor(0xA9A9A9) darkgreen = HexColor(0x006400) darkkhaki = HexColor(0xBDB76B) darkmagenta = HexColor(0x8B008B) darkolivegreen = HexColor(0x556B2F) darkorange = HexColor(0xFF8C00) darkorchid = HexColor(0x9932CC) darkred = HexColor(0x8B0000) darksalmon = HexColor(0xE9967A) darkseagreen = HexColor(0x8FBC8B) darkslateblue = HexColor(0x483D8B) darkslategray = HexColor(0x2F4F4F) darkturquoise = HexColor(0x00CED1) darkviolet = HexColor(0x9400D3) deeppink = HexColor(0xFF1493) deepskyblue = HexColor(0x00BFFF) dimgray = HexColor(0x696969) dodgerblue = HexColor(0x1E90FF) firebrick = HexColor(0xB22222) floralwhite = HexColor(0xFFFAF0) forestgreen = HexColor(0x228B22) fuchsia = HexColor(0xFF00FF) gainsboro = HexColor(0xDCDCDC) ghostwhite = HexColor(0xF8F8FF) gold = HexColor(0xFFD700) goldenrod = HexColor(0xDAA520) gray = HexColor(0x808080) grey = gray green = HexColor(0x008000) greenyellow = HexColor(0xADFF2F) honeydew = HexColor(0xF0FFF0) hotpink = HexColor(0xFF69B4) indianred = HexColor(0xCD5C5C) indigo = HexColor(0x4B0082) ivory = HexColor(0xFFFFF0) khaki = HexColor(0xF0E68C) lavender = HexColor(0xE6E6FA) lavenderblush = HexColor(0xFFF0F5) lawngreen = HexColor(0x7CFC00) lemonchiffon = HexColor(0xFFFACD) lightblue = HexColor(0xADD8E6) lightcoral = HexColor(0xF08080) lightcyan = HexColor(0xE0FFFF) lightgoldenrodyellow = HexColor(0xFAFAD2) lightgreen = HexColor(0x90EE90) lightgrey = HexColor(0xD3D3D3) lightpink = HexColor(0xFFB6C1) lightsalmon = HexColor(0xFFA07A) lightseagreen = HexColor(0x20B2AA) lightskyblue = HexColor(0x87CEFA) lightslategray = HexColor(0x778899) lightsteelblue = HexColor(0xB0C4DE) lightyellow = HexColor(0xFFFFE0) lime = HexColor(0x00FF00) limegreen = HexColor(0x32CD32) linen = HexColor(0xFAF0E6) magenta = HexColor(0xFF00FF) maroon = HexColor(0x800000) mediumaquamarine = HexColor(0x66CDAA) mediumblue = HexColor(0x0000CD) mediumorchid = HexColor(0xBA55D3) mediumpurple = HexColor(0x9370DB) mediumseagreen = HexColor(0x3CB371) mediumslateblue = HexColor(0x7B68EE) mediumspringgreen = HexColor(0x00FA9A) mediumturquoise = HexColor(0x48D1CC) mediumvioletred = HexColor(0xC71585) midnightblue = HexColor(0x191970) mintcream = HexColor(0xF5FFFA) mistyrose = HexColor(0xFFE4E1) moccasin = HexColor(0xFFE4B5) navajowhite = HexColor(0xFFDEAD) navy = HexColor(0x000080) oldlace = HexColor(0xFDF5E6) olive = HexColor(0x808000) olivedrab = HexColor(0x6B8E23) orange = HexColor(0xFFA500) orangered = HexColor(0xFF4500) orchid = HexColor(0xDA70D6) palegoldenrod = HexColor(0xEEE8AA) palegreen = HexColor(0x98FB98) paleturquoise = HexColor(0xAFEEEE) palevioletred = HexColor(0xDB7093) papayawhip = HexColor(0xFFEFD5) peachpuff = HexColor(0xFFDAB9) peru = HexColor(0xCD853F) pink = HexColor(0xFFC0CB) plum = HexColor(0xDDA0DD) powderblue = HexColor(0xB0E0E6) purple = HexColor(0x800080) red = HexColor(0xFF0000) rosybrown = HexColor(0xBC8F8F) royalblue = HexColor(0x4169E1) saddlebrown = HexColor(0x8B4513) salmon = HexColor(0xFA8072) sandybrown = HexColor(0xF4A460) seagreen = HexColor(0x2E8B57) seashell = HexColor(0xFFF5EE) sienna = HexColor(0xA0522D) silver = HexColor(0xC0C0C0) skyblue = HexColor(0x87CEEB) slateblue = HexColor(0x6A5ACD) slategray = HexColor(0x708090) snow = HexColor(0xFFFAFA) springgreen = HexColor(0x00FF7F) steelblue = HexColor(0x4682B4) tan = HexColor(0xD2B48C) teal = HexColor(0x008080) thistle = HexColor(0xD8BFD8) tomato = HexColor(0xFF6347) turquoise = HexColor(0x40E0D0) violet = HexColor(0xEE82EE) wheat = HexColor(0xF5DEB3) white = HexColor(0xFFFFFF) whitesmoke = HexColor(0xF5F5F5) yellow = HexColor(0xFFFF00) yellowgreen = HexColor(0x9ACD32) # special case -- indicates no drawing should be done transparent = Color(-1, -1, -1)