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v0.1.0 Adds effects builders and QOL changes to utils
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| 'use strict' | ||
|
|
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| const { | ||
| isHex, | ||
| isRGB, | ||
| isHSV, | ||
| hex2RGB, | ||
| HSV2RGB, | ||
| RGB2Hex, | ||
| RGB2HSV | ||
| } = require('./utils'); | ||
|
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| module.exports = { | ||
| shade, | ||
| tint, | ||
| tone | ||
| }; | ||
|
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| function shade (base, format, step, count) { | ||
| if (!base) throw new Error("Error: arg `base` is required!") | ||
|
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| if (!format) format = "hex"; | ||
| if (!step) step = 0.10; | ||
| if (!count) count = 5; | ||
|
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| return effectsBuilder(base, format, step, count, (rgb, shift) => { | ||
| return { | ||
| r: Math.min(Math.round((+rgb.r) * (1 - shift)), 255), | ||
| g: Math.min(Math.round((+rgb.g) * (1 - shift)), 255), | ||
| b: Math.min(Math.round((+rgb.b) * (1 - shift)), 255), | ||
| shift | ||
| } | ||
| }); | ||
| } | ||
|
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| function tint (base, format, step, count) { | ||
| if (!base) throw new Error("Error: arg `base` is required!") | ||
|
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| if (!format) format = "hex"; | ||
| if (!step) step = 0.10; | ||
| if (!count) count = 5; | ||
|
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| return effectsBuilder(base, format, step, count, (rgb, shift) => { | ||
| return { | ||
| r: Math.min(Math.round((255 - (+rgb.r)) * +shift), 255), | ||
| g: Math.min(Math.round((255 - (+rgb.g)) * +shift), 255), | ||
| b: Math.min(Math.round((255 - (+rgb.b)) * +shift), 255), | ||
| shift | ||
| } | ||
| }); | ||
| } | ||
|
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| function tone (base, format, step, count) { | ||
| if (!base) throw new Error("Error: arg `base` is required!") | ||
|
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| if (!format) format = "hex"; | ||
| if (!step) step = 0.10; | ||
| if (!count) count = 5; | ||
|
|
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| return effectsBuilder(base, format, step, count, (rgb, shift) => { | ||
| return { | ||
| r: Math.min(Math.round((+rgb.r) + (+rgb.r) * (0.5 - shift)), 255), | ||
| g: Math.min(Math.round((+rgb.g) + (+rgb.g) * (0.5 - shift)), 255), | ||
| b: Math.min(Math.round((+rgb.b) + (+rgb.b) * (0.5 - shift)), 255), | ||
| shift | ||
| } | ||
| }); | ||
| } | ||
|
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| function effectsBuilder (base, format="hex", step=0.05, count=5, applyEffect) { | ||
| if (isNaN(step) || isNaN(count)) { | ||
| throw new Error(`Arguments step and count must be of type number (or coercible). step=${step} count=${count}`) | ||
| } | ||
|
|
||
| if (step < 0.01) { | ||
| throw new Error(`Shade step percision must be >= 0.01 (1%). step=${step}`); | ||
| } | ||
|
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| const formatMap = { | ||
| "hex": RGB2Hex, | ||
| "hsv": RGB2HSV, | ||
| "rgb": ((e) => e) | ||
| } | ||
|
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| const constructor = base?.constructor?.name | ||
|
|
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| if (constructor === "Array") { | ||
| const _results = {}; | ||
|
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| let i = 0; | ||
| for(; i < count; i++) { | ||
| const shift = Math.round(i * step * 100) / 100; | ||
|
|
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| _results[String(shift)] = base.map((color, index) => { | ||
| let hex, hsv; | ||
| if ( | ||
| (color?.constructor?.name === "Object" || color?.constructor?.name === "String") && | ||
| (isRGB(color) || (hex = isHex(color)) || (hsv = isHSV(color))) | ||
| ) { | ||
| if (hex) color = hex2RGB(color); | ||
| if (hsv) color = HSV2RGB(color); | ||
| return formatMap[format](applyEffect(color, shift)); | ||
| } | ||
|
|
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| throw new Error(`Invalid color format; unable to generate shades. base, index=${index} color=${color}`) | ||
| }); | ||
| } | ||
|
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| return _results; | ||
| } | ||
|
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| // valid for hsv or rgb | ||
| let hsv; | ||
| if (constructor === "Object" && (isRGB(base) || (hsv = isHSV(base)))) { | ||
| if (hsv) base = HSV2RGB(base); | ||
|
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| const _results = []; | ||
|
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| let i = 0; | ||
| for(; i < count; i++) { | ||
| const shift = Math.round(i * step * 100) / 100; | ||
| _results.push(formatMap[format](applyEffect(base, shift))); | ||
| } | ||
|
|
||
| return _results; | ||
| } | ||
|
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| // only valid for singular hex color | ||
| if (base.constructor.name === "String") { | ||
| if (base.includes('#')) base = base.replace('#', ''); | ||
|
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| if (isHex(base)) { | ||
| const rgb = hex2RGB(base); | ||
| const _results = []; | ||
|
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| let i = 0; | ||
| for(; i < count; i++) { | ||
| const shift = Math.round(i * step * 100) / 100; | ||
| _results.push(formatMap[format](applyEffect(rgb, shift))); | ||
| } | ||
|
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| return _results; | ||
| } | ||
|
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| throw new Error(`Invalid color format; unable to generate shades. base=${base}`) | ||
| } | ||
|
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| throw new Error(`Shade generator requires a valid base color, or array of colors. \nbase.constructor.name=${base?.constructor?.name}`) | ||
| } |
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