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263 lines
7.0 KiB
CoffeeScript
263 lines
7.0 KiB
CoffeeScript
{PDFGradient, PDFLinearGradient, PDFRadialGradient} = require '../gradient'
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module.exports =
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initColor: ->
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# The opacity dictionaries
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@_opacityRegistry = {}
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@_opacityCount = 0
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@_gradCount = 0
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_normalizeColor: (color) ->
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if color instanceof PDFGradient
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return color
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if typeof color is 'string'
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if color.charAt(0) is '#'
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color = color.replace(/#([0-9A-F])([0-9A-F])([0-9A-F])/i, "#$1$1$2$2$3$3") if color.length is 4
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hex = parseInt(color.slice(1), 16)
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color = [hex >> 16, hex >> 8 & 0xff, hex & 0xff]
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else if namedColors[color]
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color = namedColors[color]
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if Array.isArray color
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# RGB
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if color.length is 3
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color = (part / 255 for part in color)
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# CMYK
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else if color.length is 4
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color = (part / 100 for part in color)
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return color
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return null
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_setColor: (color, stroke) ->
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color = @_normalizeColor color
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return no unless color
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op = if stroke then 'SCN' else 'scn'
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if color instanceof PDFGradient
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@_setColorSpace 'Pattern', stroke
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color.apply(op)
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else
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space = if color.length is 4 then 'DeviceCMYK' else 'DeviceRGB'
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@_setColorSpace space, stroke
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color = color.join ' '
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@addContent "#{color} #{op}"
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return yes
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_setColorSpace: (space, stroke) ->
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op = if stroke then 'CS' else 'cs'
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@addContent "/#{space} #{op}"
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fillColor: (color, opacity = 1) ->
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set = @_setColor color, no
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@fillOpacity opacity if set
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# save this for text wrapper, which needs to reset
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# the fill color on new pages
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@_fillColor = [color, opacity]
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return this
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strokeColor: (color, opacity = 1) ->
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set = @_setColor color, yes
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@strokeOpacity opacity if set
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return this
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opacity: (opacity) ->
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@_doOpacity opacity, opacity
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return this
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fillOpacity: (opacity) ->
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@_doOpacity opacity, null
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return this
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strokeOpacity: (opacity) ->
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@_doOpacity null, opacity
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return this
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_doOpacity: (fillOpacity, strokeOpacity) ->
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return unless fillOpacity? or strokeOpacity?
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fillOpacity = Math.max 0, Math.min 1, fillOpacity if fillOpacity?
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strokeOpacity = Math.max 0, Math.min 1, strokeOpacity if strokeOpacity?
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key = "#{fillOpacity}_#{strokeOpacity}"
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if @_opacityRegistry[key]
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[dictionary, name] = @_opacityRegistry[key]
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else
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dictionary =
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Type: 'ExtGState'
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dictionary.ca = fillOpacity if fillOpacity?
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dictionary.CA = strokeOpacity if strokeOpacity?
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dictionary = @ref dictionary
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dictionary.end()
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id = ++@_opacityCount
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name = "Gs#{id}"
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@_opacityRegistry[key] = [dictionary, name]
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@page.ext_gstates[name] = dictionary
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@addContent "/#{name} gs"
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linearGradient: (x1, y1, x2, y2) ->
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return new PDFLinearGradient(this, x1, y1, x2, y2)
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radialGradient: (x1, y1, r1, x2, y2, r2) ->
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return new PDFRadialGradient(this, x1, y1, r1, x2, y2, r2)
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namedColors =
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aliceblue: [240, 248, 255]
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antiquewhite: [250, 235, 215]
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aqua: [0, 255, 255]
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aquamarine: [127, 255, 212]
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azure: [240, 255, 255]
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beige: [245, 245, 220]
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bisque: [255, 228, 196]
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black: [0, 0, 0]
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blanchedalmond: [255, 235, 205]
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blue: [0, 0, 255]
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blueviolet: [138, 43, 226]
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brown: [165, 42, 42]
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burlywood: [222, 184, 135]
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cadetblue: [95, 158, 160]
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chartreuse: [127, 255, 0]
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chocolate: [210, 105, 30]
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coral: [255, 127, 80]
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cornflowerblue: [100, 149, 237]
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cornsilk: [255, 248, 220]
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crimson: [220, 20, 60]
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cyan: [0, 255, 255]
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darkblue: [0, 0, 139]
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darkcyan: [0, 139, 139]
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darkgoldenrod: [184, 134, 11]
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darkgray: [169, 169, 169]
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darkgreen: [0, 100, 0]
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darkgrey: [169, 169, 169]
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darkkhaki: [189, 183, 107]
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darkmagenta: [139, 0, 139]
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darkolivegreen: [85, 107, 47]
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darkorange: [255, 140, 0]
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darkorchid: [153, 50, 204]
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darkred: [139, 0, 0]
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darksalmon: [233, 150, 122]
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darkseagreen: [143, 188, 143]
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darkslateblue: [72, 61, 139]
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darkslategray: [47, 79, 79]
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darkslategrey: [47, 79, 79]
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darkturquoise: [0, 206, 209]
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darkviolet: [148, 0, 211]
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deeppink: [255, 20, 147]
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deepskyblue: [0, 191, 255]
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dimgray: [105, 105, 105]
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dimgrey: [105, 105, 105]
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dodgerblue: [30, 144, 255]
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firebrick: [178, 34, 34]
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floralwhite: [255, 250, 240]
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forestgreen: [34, 139, 34]
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fuchsia: [255, 0, 255]
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gainsboro: [220, 220, 220]
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ghostwhite: [248, 248, 255]
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gold: [255, 215, 0]
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goldenrod: [218, 165, 32]
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gray: [128, 128, 128]
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grey: [128, 128, 128]
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green: [0, 128, 0]
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greenyellow: [173, 255, 47]
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honeydew: [240, 255, 240]
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hotpink: [255, 105, 180]
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indianred: [205, 92, 92]
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indigo: [75, 0, 130]
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ivory: [255, 255, 240]
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khaki: [240, 230, 140]
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lavender: [230, 230, 250]
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lavenderblush: [255, 240, 245]
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lawngreen: [124, 252, 0]
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lemonchiffon: [255, 250, 205]
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lightblue: [173, 216, 230]
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lightcoral: [240, 128, 128]
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lightcyan: [224, 255, 255]
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lightgoldenrodyellow: [250, 250, 210]
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lightgray: [211, 211, 211]
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lightgreen: [144, 238, 144]
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lightgrey: [211, 211, 211]
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lightpink: [255, 182, 193]
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lightsalmon: [255, 160, 122]
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lightseagreen: [32, 178, 170]
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lightskyblue: [135, 206, 250]
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lightslategray: [119, 136, 153]
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lightslategrey: [119, 136, 153]
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lightsteelblue: [176, 196, 222]
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lightyellow: [255, 255, 224]
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lime: [0, 255, 0]
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limegreen: [50, 205, 50]
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linen: [250, 240, 230]
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magenta: [255, 0, 255]
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maroon: [128, 0, 0]
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mediumaquamarine: [102, 205, 170]
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mediumblue: [0, 0, 205]
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mediumorchid: [186, 85, 211]
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mediumpurple: [147, 112, 219]
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mediumseagreen: [60, 179, 113]
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mediumslateblue: [123, 104, 238]
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mediumspringgreen: [0, 250, 154]
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mediumturquoise: [72, 209, 204]
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mediumvioletred: [199, 21, 133]
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midnightblue: [25, 25, 112]
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mintcream: [245, 255, 250]
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mistyrose: [255, 228, 225]
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moccasin: [255, 228, 181]
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navajowhite: [255, 222, 173]
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navy: [0, 0, 128]
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oldlace: [253, 245, 230]
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olive: [128, 128, 0]
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olivedrab: [107, 142, 35]
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orange: [255, 165, 0]
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orangered: [255, 69, 0]
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orchid: [218, 112, 214]
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palegoldenrod: [238, 232, 170]
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palegreen: [152, 251, 152]
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paleturquoise: [175, 238, 238]
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palevioletred: [219, 112, 147]
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papayawhip: [255, 239, 213]
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peachpuff: [255, 218, 185]
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peru: [205, 133, 63]
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pink: [255, 192, 203]
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plum: [221, 160, 221]
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powderblue: [176, 224, 230]
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purple: [128, 0, 128]
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red: [255, 0, 0]
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rosybrown: [188, 143, 143]
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royalblue: [65, 105, 225]
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saddlebrown: [139, 69, 19]
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salmon: [250, 128, 114]
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sandybrown: [244, 164, 96]
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seagreen: [46, 139, 87]
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seashell: [255, 245, 238]
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sienna: [160, 82, 45]
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silver: [192, 192, 192]
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skyblue: [135, 206, 235]
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slateblue: [106, 90, 205]
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slategray: [112, 128, 144]
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slategrey: [112, 128, 144]
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snow: [255, 250, 250]
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springgreen: [0, 255, 127]
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steelblue: [70, 130, 180]
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tan: [210, 180, 140]
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teal: [0, 128, 128]
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thistle: [216, 191, 216]
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tomato: [255, 99, 71]
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turquoise: [64, 224, 208]
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violet: [238, 130, 238]
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wheat: [245, 222, 179]
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white: [255, 255, 255]
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whitesmoke: [245, 245, 245]
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yellow: [255, 255, 0]
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yellowgreen: [154, 205, 50]
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