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87 lines
1.6 KiB
CoffeeScript
87 lines
1.6 KiB
CoffeeScript
class AsciiIo.Brush
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@default_fg = 7
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@default_bg = 0
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@cache: {}
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@clearCache: ->
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@cache = {}
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@default: ->
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@_default ||= @create()
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@hash: (brush) ->
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"#{brush.fg}_#{brush.bg}_#{brush.blink}_#{brush.bright}_#{brush.italic}_#{brush.underline}_#{brush.reverse}"
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@create: (options = {}) ->
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key = @hash options
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brush = @cache[key]
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if not brush
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brush = new AsciiIo.Brush(options)
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@cache[key] = brush
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brush
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constructor: (options = {}) ->
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@fg = undefined
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@bg = undefined
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@blink = false
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@bright = false
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@italic = false
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@underline = false
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@reverse = false
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for name, value of options
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this[name] = value
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hash: ->
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AsciiIo.Brush.hash this
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attributes: ->
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fg : @fg
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bg : @bg
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blink : @blink
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bright : @bright
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italic : @italic
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underline: @underline
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reverse : @reverse
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fgColor: ->
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if @reverse
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@calculateBgColor()
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else
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@calculateFgColor()
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bgColor: ->
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if @reverse
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@calculateFgColor()
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else
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@calculateBgColor()
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calculateFgColor: ->
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color = @fg
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color = AsciiIo.Brush.default_fg if color is undefined
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color += 8 if color < 8 and @bright
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color
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calculateBgColor: ->
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color = @bg
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color = AsciiIo.Brush.default_bg if color is undefined
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color += 8 if color < 8 and @blink
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color
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applyChanges: (changes) ->
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attrs = @attributes()
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for attr, val of changes
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attrs[attr] = val
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AsciiIo.Brush.create attrs
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hasDefaultFg: ->
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@fgColor() == AsciiIo.Brush.default_fg
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hasDefaultBg: ->
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@bgColor() == AsciiIo.Brush.default_bg
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