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Araq 2014-08-27 23:42:51 +02:00
commit 11b6958755
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314
lib/pure/colors.nim
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@ -1,5 +1,5 @@
#
# Nimrod's Runtime Library
# Nim's Runtime Library
# (c) Copyright 2010 Andreas Rumpf
#
# See the file "copying.txt", included in this
@ -12,18 +12,20 @@
import strutils
type
TColor* = distinct int ## a color stored as RGB
Color* = distinct int ## a color stored as RGB
proc `==` *(a, b: TColor): bool {.borrow.}
{.deprecated: [TColor: Color].}
proc `==` *(a, b: Color): bool {.borrow.}
## compares two colors.
template extract(a: TColor, r, g, b: expr) {.immediate.}=
template extract(a: Color, r, g, b: expr) {.immediate.}=
var r = a.int shr 16 and 0xff
var g = a.int shr 8 and 0xff
var b = a.int and 0xff
template rawRGB(r, g, b: int): expr =
TColor(r shl 16 or g shl 8 or b)
Color(r shl 16 or g shl 8 or b)
template colorOp(op: expr) {.immediate.} =
extract(a, ar, ag, ab)
@ -38,23 +40,23 @@ proc satMinus(a, b: int): int {.inline.} =
result = a -% b
if result < 0: result = 0
proc `+`*(a, b: TColor): TColor =
proc `+`*(a, b: Color): Color =
## adds two colors: This uses saturated artithmetic, so that each color
## component cannot overflow (255 is used as a maximum).
colorOp(satPlus)
proc `-`*(a, b: TColor): TColor =
proc `-`*(a, b: Color): Color =
## substracts two colors: This uses saturated artithmetic, so that each color
## component cannot overflow (255 is used as a maximum).
colorOp(satMinus)
proc extractRGB*(a: TColor): tuple[r, g, b: range[0..255]] =
proc extractRGB*(a: Color): tuple[r, g, b: range[0..255]] =
## extracts the red/green/blue components of the color `a`.
result.r = a.int shr 16 and 0xff
result.g = a.int shr 8 and 0xff
result.b = a.int and 0xff
proc intensity*(a: TColor, f: float): TColor =
proc intensity*(a: Color, f: float): Color =
## returns `a` with intensity `f`. `f` should be a float from 0.0 (completely
## dark) to 1.0 (full color intensity).
var r = toInt(toFloat(a.int shr 16 and 0xff) * f)
@ -65,7 +67,7 @@ proc intensity*(a: TColor, f: float): TColor =
if b >% 255: b = 255
result = rawRGB(r, g, b)
template mix*(a, b: TColor, fn: expr): expr =
template mix*(a, b: Color, fn: expr): expr =
## uses `fn` to mix the colors `a` and `b`. `fn` is invoked for each component
## R, G, and B. This is a template because `fn` should be inlined and the
## compiler cannot inline proc pointers yet. If `fn`'s result is not in the
@ -84,146 +86,146 @@ template mix*(a, b: TColor, fn: expr): expr =
const
colAliceBlue* = TColor(0xF0F8FF)
colAntiqueWhite* = TColor(0xFAEBD7)
colAqua* = TColor(0x00FFFF)
colAquamarine* = TColor(0x7FFFD4)
colAzure* = TColor(0xF0FFFF)
colBeige* = TColor(0xF5F5DC)
colBisque* = TColor(0xFFE4C4)
colBlack* = TColor(0x000000)
colBlanchedAlmond* = TColor(0xFFEBCD)
colBlue* = TColor(0x0000FF)
colBlueViolet* = TColor(0x8A2BE2)
colBrown* = TColor(0xA52A2A)
colBurlyWood* = TColor(0xDEB887)
colCadetBlue* = TColor(0x5F9EA0)
colChartreuse* = TColor(0x7FFF00)
colChocolate* = TColor(0xD2691E)
colCoral* = TColor(0xFF7F50)
colCornflowerBlue* = TColor(0x6495ED)
colCornsilk* = TColor(0xFFF8DC)
colCrimson* = TColor(0xDC143C)
colCyan* = TColor(0x00FFFF)
colDarkBlue* = TColor(0x00008B)
colDarkCyan* = TColor(0x008B8B)
colDarkGoldenRod* = TColor(0xB8860B)
colDarkGray* = TColor(0xA9A9A9)
colDarkGreen* = TColor(0x006400)
colDarkKhaki* = TColor(0xBDB76B)
colDarkMagenta* = TColor(0x8B008B)
colDarkOliveGreen* = TColor(0x556B2F)
colDarkorange* = TColor(0xFF8C00)
colDarkOrchid* = TColor(0x9932CC)
colDarkRed* = TColor(0x8B0000)
colDarkSalmon* = TColor(0xE9967A)
colDarkSeaGreen* = TColor(0x8FBC8F)
colDarkSlateBlue* = TColor(0x483D8B)
colDarkSlateGray* = TColor(0x2F4F4F)
colDarkTurquoise* = TColor(0x00CED1)
colDarkViolet* = TColor(0x9400D3)
colDeepPink* = TColor(0xFF1493)
colDeepSkyBlue* = TColor(0x00BFFF)
colDimGray* = TColor(0x696969)
colDodgerBlue* = TColor(0x1E90FF)
colFireBrick* = TColor(0xB22222)
colFloralWhite* = TColor(0xFFFAF0)
colForestGreen* = TColor(0x228B22)
colFuchsia* = TColor(0xFF00FF)
colGainsboro* = TColor(0xDCDCDC)
colGhostWhite* = TColor(0xF8F8FF)
colGold* = TColor(0xFFD700)
colGoldenRod* = TColor(0xDAA520)
colGray* = TColor(0x808080)
colGreen* = TColor(0x008000)
colGreenYellow* = TColor(0xADFF2F)
colHoneyDew* = TColor(0xF0FFF0)
colHotPink* = TColor(0xFF69B4)
colIndianRed* = TColor(0xCD5C5C)
colIndigo* = TColor(0x4B0082)
colIvory* = TColor(0xFFFFF0)
colKhaki* = TColor(0xF0E68C)
colLavender* = TColor(0xE6E6FA)
colLavenderBlush* = TColor(0xFFF0F5)
colLawnGreen* = TColor(0x7CFC00)
colLemonChiffon* = TColor(0xFFFACD)
colLightBlue* = TColor(0xADD8E6)
colLightCoral* = TColor(0xF08080)
colLightCyan* = TColor(0xE0FFFF)
colLightGoldenRodYellow* = TColor(0xFAFAD2)
colLightGrey* = TColor(0xD3D3D3)
colLightGreen* = TColor(0x90EE90)
colLightPink* = TColor(0xFFB6C1)
colLightSalmon* = TColor(0xFFA07A)
colLightSeaGreen* = TColor(0x20B2AA)
colLightSkyBlue* = TColor(0x87CEFA)
colLightSlateGray* = TColor(0x778899)
colLightSteelBlue* = TColor(0xB0C4DE)
colLightYellow* = TColor(0xFFFFE0)
colLime* = TColor(0x00FF00)
colLimeGreen* = TColor(0x32CD32)
colLinen* = TColor(0xFAF0E6)
colMagenta* = TColor(0xFF00FF)
colMaroon* = TColor(0x800000)
colMediumAquaMarine* = TColor(0x66CDAA)
colMediumBlue* = TColor(0x0000CD)
colMediumOrchid* = TColor(0xBA55D3)
colMediumPurple* = TColor(0x9370D8)
colMediumSeaGreen* = TColor(0x3CB371)
colMediumSlateBlue* = TColor(0x7B68EE)
colMediumSpringGreen* = TColor(0x00FA9A)
colMediumTurquoise* = TColor(0x48D1CC)
colMediumVioletRed* = TColor(0xC71585)
colMidnightBlue* = TColor(0x191970)
colMintCream* = TColor(0xF5FFFA)
colMistyRose* = TColor(0xFFE4E1)
colMoccasin* = TColor(0xFFE4B5)
colNavajoWhite* = TColor(0xFFDEAD)
colNavy* = TColor(0x000080)
colOldLace* = TColor(0xFDF5E6)
colOlive* = TColor(0x808000)
colOliveDrab* = TColor(0x6B8E23)
colOrange* = TColor(0xFFA500)
colOrangeRed* = TColor(0xFF4500)
colOrchid* = TColor(0xDA70D6)
colPaleGoldenRod* = TColor(0xEEE8AA)
colPaleGreen* = TColor(0x98FB98)
colPaleTurquoise* = TColor(0xAFEEEE)
colPaleVioletRed* = TColor(0xD87093)
colPapayaWhip* = TColor(0xFFEFD5)
colPeachPuff* = TColor(0xFFDAB9)
colPeru* = TColor(0xCD853F)
colPink* = TColor(0xFFC0CB)
colPlum* = TColor(0xDDA0DD)
colPowderBlue* = TColor(0xB0E0E6)
colPurple* = TColor(0x800080)
colRed* = TColor(0xFF0000)
colRosyBrown* = TColor(0xBC8F8F)
colRoyalBlue* = TColor(0x4169E1)
colSaddleBrown* = TColor(0x8B4513)
colSalmon* = TColor(0xFA8072)
colSandyBrown* = TColor(0xF4A460)
colSeaGreen* = TColor(0x2E8B57)
colSeaShell* = TColor(0xFFF5EE)
colSienna* = TColor(0xA0522D)
colSilver* = TColor(0xC0C0C0)
colSkyBlue* = TColor(0x87CEEB)
colSlateBlue* = TColor(0x6A5ACD)
colSlateGray* = TColor(0x708090)
colSnow* = TColor(0xFFFAFA)
colSpringGreen* = TColor(0x00FF7F)
colSteelBlue* = TColor(0x4682B4)
colTan* = TColor(0xD2B48C)
colTeal* = TColor(0x008080)
colThistle* = TColor(0xD8BFD8)
colTomato* = TColor(0xFF6347)
colTurquoise* = TColor(0x40E0D0)
colViolet* = TColor(0xEE82EE)
colWheat* = TColor(0xF5DEB3)
colWhite* = TColor(0xFFFFFF)
colWhiteSmoke* = TColor(0xF5F5F5)
colYellow* = TColor(0xFFFF00)
colYellowGreen* = TColor(0x9ACD32)
colAliceBlue* = Color(0xF0F8FF)
colAntiqueWhite* = Color(0xFAEBD7)
colAqua* = Color(0x00FFFF)
colAquamarine* = Color(0x7FFFD4)
colAzure* = Color(0xF0FFFF)
colBeige* = Color(0xF5F5DC)
colBisque* = Color(0xFFE4C4)
colBlack* = Color(0x000000)
colBlanchedAlmond* = Color(0xFFEBCD)
colBlue* = Color(0x0000FF)
colBlueViolet* = Color(0x8A2BE2)
colBrown* = Color(0xA52A2A)
colBurlyWood* = Color(0xDEB887)
colCadetBlue* = Color(0x5F9EA0)
colChartreuse* = Color(0x7FFF00)
colChocolate* = Color(0xD2691E)
colCoral* = Color(0xFF7F50)
colCornflowerBlue* = Color(0x6495ED)
colCornsilk* = Color(0xFFF8DC)
colCrimson* = Color(0xDC143C)
colCyan* = Color(0x00FFFF)
colDarkBlue* = Color(0x00008B)
colDarkCyan* = Color(0x008B8B)
colDarkGoldenRod* = Color(0xB8860B)
colDarkGray* = Color(0xA9A9A9)
colDarkGreen* = Color(0x006400)
colDarkKhaki* = Color(0xBDB76B)
colDarkMagenta* = Color(0x8B008B)
colDarkOliveGreen* = Color(0x556B2F)
colDarkorange* = Color(0xFF8C00)
colDarkOrchid* = Color(0x9932CC)
colDarkRed* = Color(0x8B0000)
colDarkSalmon* = Color(0xE9967A)
colDarkSeaGreen* = Color(0x8FBC8F)
colDarkSlateBlue* = Color(0x483D8B)
colDarkSlateGray* = Color(0x2F4F4F)
colDarkTurquoise* = Color(0x00CED1)
colDarkViolet* = Color(0x9400D3)
colDeepPink* = Color(0xFF1493)
colDeepSkyBlue* = Color(0x00BFFF)
colDimGray* = Color(0x696969)
colDodgerBlue* = Color(0x1E90FF)
colFireBrick* = Color(0xB22222)
colFloralWhite* = Color(0xFFFAF0)
colForestGreen* = Color(0x228B22)
colFuchsia* = Color(0xFF00FF)
colGainsboro* = Color(0xDCDCDC)
colGhostWhite* = Color(0xF8F8FF)
colGold* = Color(0xFFD700)
colGoldenRod* = Color(0xDAA520)
colGray* = Color(0x808080)
colGreen* = Color(0x008000)
colGreenYellow* = Color(0xADFF2F)
colHoneyDew* = Color(0xF0FFF0)
colHotPink* = Color(0xFF69B4)
colIndianRed* = Color(0xCD5C5C)
colIndigo* = Color(0x4B0082)
colIvory* = Color(0xFFFFF0)
colKhaki* = Color(0xF0E68C)
colLavender* = Color(0xE6E6FA)
colLavenderBlush* = Color(0xFFF0F5)
colLawnGreen* = Color(0x7CFC00)
colLemonChiffon* = Color(0xFFFACD)
colLightBlue* = Color(0xADD8E6)
colLightCoral* = Color(0xF08080)
colLightCyan* = Color(0xE0FFFF)
colLightGoldenRodYellow* = Color(0xFAFAD2)
colLightGrey* = Color(0xD3D3D3)
colLightGreen* = Color(0x90EE90)
colLightPink* = Color(0xFFB6C1)
colLightSalmon* = Color(0xFFA07A)
colLightSeaGreen* = Color(0x20B2AA)
colLightSkyBlue* = Color(0x87CEFA)
colLightSlateGray* = Color(0x778899)
colLightSteelBlue* = Color(0xB0C4DE)
colLightYellow* = Color(0xFFFFE0)
colLime* = Color(0x00FF00)
colLimeGreen* = Color(0x32CD32)
colLinen* = Color(0xFAF0E6)
colMagenta* = Color(0xFF00FF)
colMaroon* = Color(0x800000)
colMediumAquaMarine* = Color(0x66CDAA)
colMediumBlue* = Color(0x0000CD)
colMediumOrchid* = Color(0xBA55D3)
colMediumPurple* = Color(0x9370D8)
colMediumSeaGreen* = Color(0x3CB371)
colMediumSlateBlue* = Color(0x7B68EE)
colMediumSpringGreen* = Color(0x00FA9A)
colMediumTurquoise* = Color(0x48D1CC)
colMediumVioletRed* = Color(0xC71585)
colMidnightBlue* = Color(0x191970)
colMintCream* = Color(0xF5FFFA)
colMistyRose* = Color(0xFFE4E1)
colMoccasin* = Color(0xFFE4B5)
colNavajoWhite* = Color(0xFFDEAD)
colNavy* = Color(0x000080)
colOldLace* = Color(0xFDF5E6)
colOlive* = Color(0x808000)
colOliveDrab* = Color(0x6B8E23)
colOrange* = Color(0xFFA500)
colOrangeRed* = Color(0xFF4500)
colOrchid* = Color(0xDA70D6)
colPaleGoldenRod* = Color(0xEEE8AA)
colPaleGreen* = Color(0x98FB98)
colPaleTurquoise* = Color(0xAFEEEE)
colPaleVioletRed* = Color(0xD87093)
colPapayaWhip* = Color(0xFFEFD5)
colPeachPuff* = Color(0xFFDAB9)
colPeru* = Color(0xCD853F)
colPink* = Color(0xFFC0CB)
colPlum* = Color(0xDDA0DD)
colPowderBlue* = Color(0xB0E0E6)
colPurple* = Color(0x800080)
colRed* = Color(0xFF0000)
colRosyBrown* = Color(0xBC8F8F)
colRoyalBlue* = Color(0x4169E1)
colSaddleBrown* = Color(0x8B4513)
colSalmon* = Color(0xFA8072)
colSandyBrown* = Color(0xF4A460)
colSeaGreen* = Color(0x2E8B57)
colSeaShell* = Color(0xFFF5EE)
colSienna* = Color(0xA0522D)
colSilver* = Color(0xC0C0C0)
colSkyBlue* = Color(0x87CEEB)
colSlateBlue* = Color(0x6A5ACD)
colSlateGray* = Color(0x708090)
colSnow* = Color(0xFFFAFA)
colSpringGreen* = Color(0x00FF7F)
colSteelBlue* = Color(0x4682B4)
colTan* = Color(0xD2B48C)
colTeal* = Color(0x008080)
colThistle* = Color(0xD8BFD8)
colTomato* = Color(0xFF6347)
colTurquoise* = Color(0x40E0D0)
colViolet* = Color(0xEE82EE)
colWheat* = Color(0xF5DEB3)
colWhite* = Color(0xFFFFFF)
colWhiteSmoke* = Color(0xF5F5F5)
colYellow* = Color(0xFFFF00)
colYellowGreen* = Color(0x9ACD32)
colorNames = [
("aliceblue", colAliceBlue),
@ -367,11 +369,11 @@ const
("yellow", colYellow),
("yellowgreen", colYellowGreen)]
proc `$`*(c: TColor): string =
proc `$`*(c: Color): string =
## converts a color into its textual representation. Example: ``#00FF00``.
result = '#' & toHex(int(c), 6)
proc binaryStrSearch(x: openarray[tuple[name: string, col: TColor]],
proc binaryStrSearch(x: openArray[tuple[name: string, col: Color]],
y: string): int =
var a = 0
var b = len(x) - 1
@ -383,14 +385,14 @@ proc binaryStrSearch(x: openarray[tuple[name: string, col: TColor]],
else: return mid
result = - 1
proc parseColor*(name: string): TColor =
proc parseColor*(name: string): Color =
## parses `name` to a color value. If no valid color could be
## parsed ``EInvalidValue`` is raised.
if name[0] == '#':
result = TColor(parseHexInt(name))
result = Color(parseHexInt(name))
else:
var idx = binaryStrSearch(colorNames, name)
if idx < 0: raise newException(EInvalidValue, "unkown color: " & name)
if idx < 0: raise newException(ValueError, "unkown color: " & name)
result = colorNames[idx][1]
proc isColor*(name: string): bool =
@ -403,7 +405,7 @@ proc isColor*(name: string): bool =
else:
result = binaryStrSearch(colorNames, name) >= 0
proc rgb*(r, g, b: range[0..255]): TColor =
proc rgb*(r, g, b: range[0..255]): Color =
## constructs a color from RGB values.
result = rawRGB(r, g, b)