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🎨 adding support for background color

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This commit is contained in:
Michael Straßburger 2016-09-28 13:38:47 +02:00
parent 64b03e3422
commit bfe6abadd7
1 changed files with 21 additions and 7 deletions
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28
src/BrailleBuffer.coffee
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@ -19,10 +19,10 @@ module.exports = class BrailleBuffer
pixelBuffer: null pixelBuffer: null
charBuffer: null charBuffer: null
colorBuffer: null foregroundBuffer: null
backgroundBuffer: null
termReset: "\x1B[39m" termReset: "\x1B[39;49m"
termColor: (color) -> "\x1B[38;5;#{color}m"
constructor: (@width, @height) -> constructor: (@width, @height) ->
@pixelBuffer = new Buffer @width*@height/8 @pixelBuffer = new Buffer @width*@height/8
@ -31,12 +31,16 @@ module.exports = class BrailleBuffer
clear: -> clear: ->
@pixelBuffer.fill 0 @pixelBuffer.fill 0
@charBuffer = [] @charBuffer = []
@colorBuffer = [] @foregroundBuffer = []
@backgroundBuffer = []
setBackground: (idx, color) ->
@backgroundBuffer[idx] = color
setPixel: (x, y, color) -> setPixel: (x, y, color) ->
@_locate x, y, (idx, mask) => @_locate x, y, (idx, mask) =>
@pixelBuffer[idx] |= mask @pixelBuffer[idx] |= mask
@colorBuffer[idx] = @termColor color @foregroundBuffer[idx] = color
unsetPixel: (x, y) -> unsetPixel: (x, y) ->
@_locate x, y, (idx, mask) => @_locate x, y, (idx, mask) =>
@ -51,6 +55,16 @@ module.exports = class BrailleBuffer
mask = @characterMap[y&3][x&1] mask = @characterMap[y&3][x&1]
cb idx, mask cb idx, mask
_termColor: (foreground, background) ->
if foreground and background
"\x1B[38;5;#{foreground};48;5;#{background}m"
else if foreground
"\x1B[49;38;5;#{foreground}m"
else if background
"\x1B[39;48;5;#{background}m"
else
@termReset
frame: -> frame: ->
output = [] output = []
currentColor = null currentColor = null
@ -59,7 +73,7 @@ module.exports = class BrailleBuffer
for idx in [0...@pixelBuffer.length] for idx in [0...@pixelBuffer.length]
output.push delimeter unless idx % (@width/2) output.push delimeter unless idx % (@width/2)
if currentColor isnt colorCode = @colorBuffer[idx] or @termReset if currentColor isnt colorCode = @_termColor @foregroundBuffer[idx], @backgroundBuffer[idx]
output.push currentColor = colorCode output.push currentColor = colorCode
output.push if @charBuffer[idx] output.push if @charBuffer[idx]
@ -76,7 +90,7 @@ module.exports = class BrailleBuffer
return unless 0 <= x < @width and 0 <= y < @height return unless 0 <= x < @width and 0 <= y < @height
idx = @_project x, y idx = @_project x, y
@charBuffer[idx] = char @charBuffer[idx] = char
@colorBuffer[idx] = @termColor color @foregroundBuffer[idx] = color
writeText: (text, x, y, color, center = true) -> writeText: (text, x, y, color, center = true) ->
x -= text.length/2+1 if center x -= text.length/2+1 if center