diff options
Diffstat (limited to 'node_modules/chroma-js/src/conversions/css2rgb.coffee')
| -rw-r--r-- | node_modules/chroma-js/src/conversions/css2rgb.coffee | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/node_modules/chroma-js/src/conversions/css2rgb.coffee b/node_modules/chroma-js/src/conversions/css2rgb.coffee new file mode 100644 index 0000000000..f48076eaca --- /dev/null +++ b/node_modules/chroma-js/src/conversions/css2rgb.coffee @@ -0,0 +1,44 @@ + +css2rgb = (css) -> + css = css.toLowerCase() + # named X11 colors + if chroma.colors? and chroma.colors[css] + return hex2rgb chroma.colors[css] + # rgb(250,20,0) + if m = css.match /rgb\(\s*(\-?\d+),\s*(\-?\d+)\s*,\s*(\-?\d+)\s*\)/ + rgb = m.slice 1,4 + for i in [0..2] + rgb[i] = +rgb[i] + rgb[3] = 1 # default alpha + # rgba(250,20,0,0.4) + else if m = css.match /rgba\(\s*(\-?\d+),\s*(\-?\d+)\s*,\s*(\-?\d+)\s*,\s*([01]|[01]?\.\d+)\)/ + rgb = m.slice 1,5 + for i in [0..3] + rgb[i] = +rgb[i] + # rgb(100%,0%,0%) + else if m = css.match /rgb\(\s*(\-?\d+(?:\.\d+)?)%,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*\)/ + rgb = m.slice 1,4 + for i in [0..2] + rgb[i] = Math.round rgb[i] * 2.55 + rgb[3] = 1 # default alpha + # rgba(100%,0%,0%,0.4) + else if m = css.match /rgba\(\s*(\-?\d+(?:\.\d+)?)%,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*([01]|[01]?\.\d+)\)/ + rgb = m.slice 1,5 + for i in [0..2] + rgb[i] = Math.round rgb[i] * 2.55 + rgb[3] = +rgb[3] + # hsl(0,100%,50%) + else if m = css.match /hsl\(\s*(\-?\d+(?:\.\d+)?),\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*\)/ + hsl = m.slice 1,4 + hsl[1] *= 0.01 + hsl[2] *= 0.01 + rgb = hsl2rgb hsl + rgb[3] = 1 + # hsla(0,100%,50%,0.5) + else if m = css.match /hsla\(\s*(\-?\d+(?:\.\d+)?),\s*(\-?\d+(?:\.\d+)?)%\s*,\s*(\-?\d+(?:\.\d+)?)%\s*,\s*([01]|[01]?\.\d+)\)/ + hsl = m.slice 1,4 + hsl[1] *= 0.01 + hsl[2] *= 0.01 + rgb = hsl2rgb hsl + rgb[3] = +m[4] # default alpha = 1 + rgb |