@lautarobock/color-picker
Version:
Angular Material Color Picker
151 lines • 24.5 kB
JavaScript
const trimLeft = /^\s+/;
const trimRight = /\s+$/;
const tinyCounter = 0;
const mathRound = Math.round;
const mathMin = Math.min;
const mathMax = Math.max;
const mathRandom = Math.random;
export const NUMERIC_REGEX = /[^0-9]/g;
export const MAX_RGB = 255;
export const MIN_RGB = 0;
/** List basic colors */
export const BASIC_COLORS = ["#ffffff", "#ffff00", "#ff00ff", "#ff0000",
"#c0c0c0", "#808080", "#808000", "#800080",
"#800000", "#00ffff", "#00ff00", "#008080",
"#008000", "#0000ff", "#000080", "#000000"
];
/**
* Get color at position
* @param ctx
* @param x
* @param y
*/
export function getColorAtPosition(ctx, x, y) {
const imageData = ctx.getImageData(x, y, 1, 1).data;
return { r: imageData[0], g: imageData[1], b: imageData[2] };
}
// `rgbaToHex`
// Converts an RGBA color plus alpha transparency to hex
// Assumes r, g, b are contained in the set [0, 255] and
// a in [0, 1]. Returns a 4 or 8 character rgba hex
export function rgbaToHex(r, g, b, a, allow4Char) {
var hex = [
pad2(mathRound(r).toString(16)),
pad2(mathRound(g).toString(16)),
pad2(mathRound(b).toString(16)),
pad2(convertDecimalToHex(a))
];
// Return a 4 character hex if possible
if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
}
return hex.join("");
}
// Force a hex value to have 2 characters
export function pad2(c) {
return c.length == 1 ? '0' + c : '' + c;
}
// Converts a decimal to a hex value
export function convertDecimalToHex(d) {
return Math.round(parseFloat(d) * 255).toString(16);
}
// Converts a hex value to a decimal
function convertHexToDecimal(h) {
return (parseIntFromHex(h) / 255);
}
// Parse a base-16 hex value into a base-10 integer
function parseIntFromHex(val) {
return parseInt(val, 16);
}
// `rgbToHex`
// Converts an RGB color to hex
// Assumes r, g, and b are contained in the set [0, 255]
// Returns a 3 or 6 character hex
export function rgbToHex(r, g, b, allow3Char) {
var hex = [
pad2(mathRound(r).toString(16)),
pad2(mathRound(g).toString(16)),
pad2(mathRound(b).toString(16))
];
// Return a 3 character hex if possible
if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
}
return hex.join("");
}
// Actual matching.
// Parentheses and commas are optional, but not required.
// Whitespace can take the place of commas or opening parent
const CSS_INTEGER = "[-\\+]?\\d+%?";
const CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
const CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
const PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
const PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
export const matchers = {
CSS_UNIT: new RegExp(CSS_UNIT),
rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
};
// `stringInputToObject`
// Permissive string parsing. Take in a number of formats, and output an object
// based on detected format. Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
export function stringInputToObject(color) {
color = color.replace(trimLeft, '').replace(trimRight, '').toLowerCase();
// Try to match string input using regular expressions.
// Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
// Just return an object and let the conversion functions handle that.
// This way the result will be the same whether the tinycolor is initialized with string or object.
let match;
let obj;
if ((match = matchers.rgb.exec(color))) {
return { r: match[1], g: match[2], b: match[3], a: 1 };
}
if ((match = matchers.rgba.exec(color))) {
return { r: match[1], g: match[2], b: match[3], a: match[4] };
}
if ((match = matchers.hex8.exec(color))) {
return {
r: parseIntFromHex(match[1]),
g: parseIntFromHex(match[2]),
b: parseIntFromHex(match[3]),
a: convertHexToDecimal(match[4]),
};
}
if ((match = matchers.hex6.exec(color))) {
return {
r: parseIntFromHex(match[1]),
g: parseIntFromHex(match[2]),
b: parseIntFromHex(match[3]),
a: 1
};
}
if ((match = matchers.hex4.exec(color))) {
return {
r: parseIntFromHex(match[1] + '' + match[1]),
g: parseIntFromHex(match[2] + '' + match[2]),
b: parseIntFromHex(match[3] + '' + match[3]),
a: convertHexToDecimal(match[4] + '' + match[4]),
};
}
if ((match = matchers.hex3.exec(color))) {
return {
r: parseIntFromHex(match[1] + '' + match[1]),
g: parseIntFromHex(match[2] + '' + match[2]),
b: parseIntFromHex(match[3] + '' + match[3]),
a: 1
};
}
return null;
}
export function createMissingDateImplError(provider) {
return Error(`NgxMatColorPicker: No provider found for ${provider}. You must define MAT_COLOR_FORMATS in your module`);
}
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trimLeft = /^\\s+/;\r\nconst trimRight = /\\s+$/;\r\nconst tinyCounter = 0;\r\nconst mathRound = Math.round;\r\nconst mathMin = Math.min;\r\nconst mathMax = Math.max;\r\nconst mathRandom = Math.random;\r\n\r\nexport const NUMERIC_REGEX = /[^0-9]/g;\r\nexport const MAX_RGB = 255;\r\nexport const MIN_RGB = 0;\r\n\r\n\r\n/** List basic colors */\r\nexport const BASIC_COLORS = [\"#ffffff\", \"#ffff00\", \"#ff00ff\", \"#ff0000\",\r\n    \"#c0c0c0\", \"#808080\", \"#808000\", \"#800080\",\r\n    \"#800000\", \"#00ffff\", \"#00ff00\", \"#008080\",\r\n    \"#008000\", \"#0000ff\", \"#000080\", \"#000000\"\r\n];\r\n\r\n/**\r\n * Get color at position\r\n * @param ctx \r\n * @param x \r\n * @param y \r\n */\r\nexport function getColorAtPosition(ctx: CanvasRenderingContext2D, x: number, y: number): { r: number, g: number, b: number } {\r\n    const imageData: Uint8ClampedArray = ctx.getImageData(x, y, 1, 1).data;\r\n    return { r: imageData[0], g: imageData[1], b: imageData[2] };\r\n}\r\n\r\n// `rgbaToHex`\r\n// Converts an RGBA color plus alpha transparency to hex\r\n// Assumes r, g, b are contained in the set [0, 255] and\r\n// a in [0, 1]. Returns a 4 or 8 character rgba hex\r\nexport function rgbaToHex(r: number, g: number, b: number, a: number, allow4Char?: boolean): string {\r\n    var hex = [\r\n        pad2(mathRound(r).toString(16)),\r\n        pad2(mathRound(g).toString(16)),\r\n        pad2(mathRound(b).toString(16)),\r\n        pad2(convertDecimalToHex(a))\r\n    ];\r\n\r\n    // Return a 4 character hex if possible\r\n    if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {\r\n        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);\r\n    }\r\n\r\n    return hex.join(\"\");\r\n}\r\n\r\n// Force a hex value to have 2 characters\r\nexport function pad2(c): string {\r\n    return c.length == 1 ? '0' + c : '' + c;\r\n}\r\n\r\n// Converts a decimal to a hex value\r\nexport function convertDecimalToHex(d) {\r\n    return Math.round(parseFloat(d) * 255).toString(16);\r\n}\r\n\r\n// Converts a hex value to a decimal\r\nfunction convertHexToDecimal(h) {\r\n    return (parseIntFromHex(h) / 255);\r\n}\r\n\r\n// Parse a base-16 hex value into a base-10 integer\r\nfunction parseIntFromHex(val) {\r\n    return parseInt(val, 16);\r\n}\r\n\r\n// `rgbToHex`\r\n// Converts an RGB color to hex\r\n// Assumes r, g, and b are contained in the set [0, 255]\r\n// Returns a 3 or 6 character hex\r\nexport function rgbToHex(r: number, g: number, b: number, allow3Char?: boolean) {\r\n\r\n    var hex = [\r\n        pad2(mathRound(r).toString(16)),\r\n        pad2(mathRound(g).toString(16)),\r\n        pad2(mathRound(b).toString(16))\r\n    ];\r\n\r\n    // Return a 3 character hex if possible\r\n    if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {\r\n        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);\r\n    }\r\n\r\n    return hex.join(\"\");\r\n}\r\n\r\n// Actual matching.\r\n// Parentheses and commas are optional, but not required.\r\n// Whitespace can take the place of commas or opening parent\r\nconst CSS_INTEGER = \"[-\\\\+]?\\\\d+%?\";\r\nconst CSS_NUMBER = \"[-\\\\+]?\\\\d*\\\\.\\\\d+%?\";\r\nconst CSS_UNIT = \"(?:\" + CSS_NUMBER + \")|(?:\" + CSS_INTEGER + \")\";\r\nconst PERMISSIVE_MATCH3 = \"[\\\\s|\\\\(]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")\\\\s*\\\\)?\";\r\nconst PERMISSIVE_MATCH4 = \"[\\\\s|\\\\(]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")\\\\s*\\\\)?\";\r\n\r\nexport const matchers = {\r\n    CSS_UNIT: new RegExp(CSS_UNIT),\r\n    rgb: new RegExp(\"rgb\" + PERMISSIVE_MATCH3),\r\n    rgba: new RegExp(\"rgba\" + PERMISSIVE_MATCH4),\r\n    hsl: new RegExp(\"hsl\" + PERMISSIVE_MATCH3),\r\n    hsla: new RegExp(\"hsla\" + PERMISSIVE_MATCH4),\r\n    hsv: new RegExp(\"hsv\" + PERMISSIVE_MATCH3),\r\n    hsva: new RegExp(\"hsva\" + PERMISSIVE_MATCH4),\r\n    hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,\r\n    hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,\r\n    hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,\r\n    hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/\r\n};\r\n\r\n// `stringInputToObject`\r\n// Permissive string parsing.  Take in a number of formats, and output an object\r\n// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`\r\nexport function stringInputToObject(color: string): { r: number, g: number, b: number, a: number } {\r\n\r\n    color = color.replace(trimLeft, '').replace(trimRight, '').toLowerCase();\r\n\r\n    // Try to match string input using regular expressions.\r\n    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]\r\n    // Just return an object and let the conversion functions handle that.\r\n    // This way the result will be the same whether the tinycolor is initialized with string or object.\r\n    let match;\r\n    let obj;\r\n    if ((match = matchers.rgb.exec(color))) {\r\n        return { r: match[1], g: match[2], b: match[3], a: 1 };\r\n    }\r\n    if ((match = matchers.rgba.exec(color))) {\r\n        return { r: match[1], g: match[2], b: match[3], a: match[4] };\r\n    }\r\n\r\n    if ((match = matchers.hex8.exec(color))) {\r\n        return {\r\n            r: parseIntFromHex(match[1]),\r\n            g: parseIntFromHex(match[2]),\r\n            b: parseIntFromHex(match[3]),\r\n            a: convertHexToDecimal(match[4]),\r\n        };\r\n    }\r\n    if ((match = matchers.hex6.exec(color))) {\r\n        return {\r\n            r: parseIntFromHex(match[1]),\r\n            g: parseIntFromHex(match[2]),\r\n            b: parseIntFromHex(match[3]),\r\n            a: 1\r\n        };\r\n    }\r\n    if ((match = matchers.hex4.exec(color))) {\r\n        return {\r\n            r: parseIntFromHex(match[1] + '' + match[1]),\r\n            g: parseIntFromHex(match[2] + '' + match[2]),\r\n            b: parseIntFromHex(match[3] + '' + match[3]),\r\n            a: convertHexToDecimal(match[4] + '' + match[4]),\r\n        };\r\n    }\r\n    if ((match = matchers.hex3.exec(color))) {\r\n        return {\r\n            r: parseIntFromHex(match[1] + '' + match[1]),\r\n            g: parseIntFromHex(match[2] + '' + match[2]),\r\n            b: parseIntFromHex(match[3] + '' + match[3]),\r\n            a: 1\r\n        };\r\n    }\r\n\r\n    return null;\r\n}\r\n\r\nexport function createMissingDateImplError(provider: string) {\r\n    return Error(\r\n        `NgxMatColorPicker: No provider found for ${provider}. You must define MAT_COLOR_FORMATS in your module`);\r\n}"]}