From 7aa882c568af7f4f3227a508f8584c43741b8be5 Mon Sep 17 00:00:00 2001
From: Conor_Mack <cmckeown101@gmail.com>
Date: Sat, 30 May 2020 18:59:33 +0100
Subject: [PATCH] Complete HSVAColor Class and Utils

---
 .../Colorpicker/Colorpicker.svelte            |   0
 .../Colorpicker/utils/HSVAColor.js            |  66 +++++++++++
 .../userInterface/Colorpicker/utils/utils.js  | 108 ++++++++++++++++++
 3 files changed, 174 insertions(+)
 create mode 100644 packages/builder/src/components/userInterface/Colorpicker/Colorpicker.svelte
 create mode 100644 packages/builder/src/components/userInterface/Colorpicker/utils/HSVAColor.js
 create mode 100644 packages/builder/src/components/userInterface/Colorpicker/utils/utils.js

diff --git a/packages/builder/src/components/userInterface/Colorpicker/Colorpicker.svelte b/packages/builder/src/components/userInterface/Colorpicker/Colorpicker.svelte
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/builder/src/components/userInterface/Colorpicker/utils/HSVAColor.js b/packages/builder/src/components/userInterface/Colorpicker/utils/HSVAColor.js
new file mode 100644
index 0000000000..e39e700903
--- /dev/null
+++ b/packages/builder/src/components/userInterface/Colorpicker/utils/HSVAColor.js
@@ -0,0 +1,66 @@
+import {
+  getHexaValues,
+  getRgbaValues,
+  hsvToHSL,
+  isValidRgba,
+  rgbToHSV,
+  hsvToRgb,
+} from "./utils"
+
+export class HSVAColor {
+  h = 0
+  s = 0
+  v = 0
+  a = 1
+
+  constructor(color) {
+    if (color.startsWith("#")) {
+      let [rHex, gHex, bHex, aHex] = getHexaValues(color)
+      this.hexaToHSVA([rHex, gHex, bHex], aHex)
+    } else if (color.startsWith("rgb")) {
+      let rgba = getRgbaValues(color)
+      this.rgbaToHSVA(rgba)
+    }
+  }
+
+  setHSVA([h, s, v, a]) {
+    this.h = h
+    this.s = s
+    this.v = v
+    this.a = a
+  }
+
+  getHSLA() {
+    const [h, s, l] = hsvToHSL([this.h, this.s, this.v])
+    return `hsla(${h}, ${s}, ${l}, ${this.a})`
+  }
+
+  hexaToHSVA(hex, alpha = "FF") {
+    const rgba = hex
+      .map(v => parseInt(v, 16))
+      .concat((parseInt(alpha, 16) / 255).toFixed(1))
+    this.rgbaToHSVA(rgba)
+  }
+
+  rgbaToHSVA(rgba) {
+    if (isValidRgba(rgba)) {
+      const [r, g, b, a = "1"] = rgba
+      let hsv = rgbToHSV([r, g, b])
+      this.setHSVA([...hsv, a])
+    }
+  }
+
+  hsvaToHexa() {
+    const [r, g, b, a] = this.hsvaToRgba()
+    const hexa = [r, g, b]
+      .map(v => v.toString(16))
+      .concat((a * 255).toFixed(1).toString(16))
+    return hexa
+  }
+
+  hsvaToRgba() {
+    const { h, s, v, a } = this
+    let rgb = hsvToRgb([h, s, v])
+    return [...rgb, a]
+  }
+}
diff --git a/packages/builder/src/components/userInterface/Colorpicker/utils/utils.js b/packages/builder/src/components/userInterface/Colorpicker/utils/utils.js
new file mode 100644
index 0000000000..7412c42e27
--- /dev/null
+++ b/packages/builder/src/components/userInterface/Colorpicker/utils/utils.js
@@ -0,0 +1,108 @@
+export const getRgbaValues = rgbaString =>
+  rgbaString.replace(/[a-z\(\)\s]/gi, "").split(",")
+
+export const getHexaValues = hexString =>
+  hexString.match(/[A-F]{2}|[A-F]\d{1}|\d{2}|\d[A-F]/gi)
+
+export const isValidRgba = rgba => {
+  let [r, g, b, a = 1] = rgba
+
+  let isValidLengthRange = rgba.length === 3 || rgba.length === 4
+  let isValidColorRange = [r, g, b].every(v => v >= 0 && v <= 255)
+  let isValidAlphaRange = rgba.length === 3 || (a >= 0 && a <= 1)
+
+  return isValidLengthRange && isValidColorRange && isValidAlphaRange
+}
+
+//Credit : https://github.com/Qix-/color-convert
+export const rgbToHSV = rgb => {
+  let rdif
+  let gdif
+  let bdif
+  let h
+  let s
+
+  const r = rgb[0] / 255
+  const g = rgb[1] / 255
+  const b = rgb[2] / 255
+  const v = Math.max(r, g, b)
+  const diff = v - Math.min(r, g, b)
+  const diffc = function(c) {
+    return (v - c) / 6 / diff + 1 / 2
+  }
+
+  if (diff === 0) {
+    h = 0
+    s = 0
+  } else {
+    s = diff / v
+    rdif = diffc(r)
+    gdif = diffc(g)
+    bdif = diffc(b)
+
+    if (r === v) {
+      h = bdif - gdif
+    } else if (g === v) {
+      h = 1 / 3 + rdif - bdif
+    } else if (b === v) {
+      h = 2 / 3 + gdif - rdif
+    }
+
+    if (h < 0) {
+      h += 1
+    } else if (h > 1) {
+      h -= 1
+    }
+  }
+
+  const hsvResult = [h * 360, s * 100, v * 100].map(v => v.toFixed(0))
+  return hsvResult
+}
+
+//Credit : https://github.com/Qix-/color-convert
+export const hsvToRgb = hsv => {
+  const h = hsv[0] / 60
+  const s = hsv[1] / 100
+  let v = hsv[2] / 100
+  const hi = Math.floor(h) % 6
+
+  const f = h - Math.floor(h)
+  const p = 255 * v * (1 - s)
+  const q = 255 * v * (1 - s * f)
+  const t = 255 * v * (1 - s * (1 - f))
+  v *= 255
+
+  switch (hi) {
+    case 0:
+      return [v, t, p]
+    case 1:
+      return [q, v, p]
+    case 2:
+      return [p, v, t]
+    case 3:
+      return [p, q, v]
+    case 4:
+      return [t, p, v]
+    case 5:
+      return [v, p, q]
+  }
+}
+
+//Credit : https://github.com/Qix-/color-convert
+export const hsvToHSL = hsv => {
+  const h = hsv[0]
+  const s = hsv[1] / 100
+  const v = hsv[2] / 100
+  const vmin = Math.max(v, 0.01)
+  let sl
+  let l
+
+  l = (2 - s) * v
+  const lmin = (2 - s) * vmin
+  sl = s * vmin
+  sl /= lmin <= 1 ? lmin : 2 - lmin
+  sl = sl || 0
+  l /= 2
+
+  return [h, sl * 100, l * 100]
+}