@vipstorage/material-color-picker
Version:
Angular Material Color Picker
151 lines • 23.9 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 ${provider}. You must define MAT_COLOR_FORMATS in your module`);
}
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trimLeft = /^\\s+/;\nconst trimRight = /\\s+$/;\nconst tinyCounter = 0;\nconst mathRound = Math.round;\nconst mathMin = Math.min;\nconst mathMax = Math.max;\nconst mathRandom = Math.random;\n\nexport const NUMERIC_REGEX = /[^0-9]/g;\nexport const MAX_RGB = 255;\nexport const MIN_RGB = 0;\n\n\n/** List basic colors */\nexport const BASIC_COLORS = [\"#ffffff\", \"#ffff00\", \"#ff00ff\", \"#ff0000\",\n    \"#c0c0c0\", \"#808080\", \"#808000\", \"#800080\",\n    \"#800000\", \"#00ffff\", \"#00ff00\", \"#008080\",\n    \"#008000\", \"#0000ff\", \"#000080\", \"#000000\"\n];\n\n/**\n * Get color at position\n * @param ctx \n * @param x \n * @param y \n */\nexport function getColorAtPosition(ctx: CanvasRenderingContext2D, x: number, y: number): { r: number, g: number, b: number } {\n    const imageData: Uint8ClampedArray = ctx.getImageData(x, y, 1, 1).data;\n    return { r: imageData[0], g: imageData[1], b: imageData[2] };\n}\n\n// `rgbaToHex`\n// Converts an RGBA color plus alpha transparency to hex\n// Assumes r, g, b are contained in the set [0, 255] and\n// a in [0, 1]. Returns a 4 or 8 character rgba hex\nexport function rgbaToHex(r: number, g: number, b: number, a: number, allow4Char?: boolean): string {\n    var hex = [\n        pad2(mathRound(r).toString(16)),\n        pad2(mathRound(g).toString(16)),\n        pad2(mathRound(b).toString(16)),\n        pad2(convertDecimalToHex(a))\n    ];\n\n    // Return a 4 character hex if possible\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)) {\n        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);\n    }\n\n    return hex.join(\"\");\n}\n\n// Force a hex value to have 2 characters\nexport function pad2(c): string {\n    return c.length == 1 ? '0' + c : '' + c;\n}\n\n// Converts a decimal to a hex value\nexport function convertDecimalToHex(d) {\n    return Math.round(parseFloat(d) * 255).toString(16);\n}\n\n// Converts a hex value to a decimal\nfunction convertHexToDecimal(h) {\n    return (parseIntFromHex(h) / 255);\n}\n\n// Parse a base-16 hex value into a base-10 integer\nfunction parseIntFromHex(val) {\n    return parseInt(val, 16);\n}\n\n// `rgbToHex`\n// Converts an RGB color to hex\n// Assumes r, g, and b are contained in the set [0, 255]\n// Returns a 3 or 6 character hex\nexport function rgbToHex(r: number, g: number, b: number, allow3Char?: boolean) {\n\n    var hex = [\n        pad2(mathRound(r).toString(16)),\n        pad2(mathRound(g).toString(16)),\n        pad2(mathRound(b).toString(16))\n    ];\n\n    // Return a 3 character hex if possible\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)) {\n        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);\n    }\n\n    return hex.join(\"\");\n}\n\n// Actual matching.\n// Parentheses and commas are optional, but not required.\n// Whitespace can take the place of commas or opening parent\nconst CSS_INTEGER = \"[-\\\\+]?\\\\d+%?\";\nconst CSS_NUMBER = \"[-\\\\+]?\\\\d*\\\\.\\\\d+%?\";\nconst CSS_UNIT = \"(?:\" + CSS_NUMBER + \")|(?:\" + CSS_INTEGER + \")\";\nconst PERMISSIVE_MATCH3 = \"[\\\\s|\\\\(]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")\\\\s*\\\\)?\";\nconst PERMISSIVE_MATCH4 = \"[\\\\s|\\\\(]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")[,|\\\\s]+(\" + CSS_UNIT + \")\\\\s*\\\\)?\";\n\nexport const matchers = {\n    CSS_UNIT: new RegExp(CSS_UNIT),\n    rgb: new RegExp(\"rgb\" + PERMISSIVE_MATCH3),\n    rgba: new RegExp(\"rgba\" + PERMISSIVE_MATCH4),\n    hsl: new RegExp(\"hsl\" + PERMISSIVE_MATCH3),\n    hsla: new RegExp(\"hsla\" + PERMISSIVE_MATCH4),\n    hsv: new RegExp(\"hsv\" + PERMISSIVE_MATCH3),\n    hsva: new RegExp(\"hsva\" + PERMISSIVE_MATCH4),\n    hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,\n    hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,\n    hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,\n    hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/\n};\n\n// `stringInputToObject`\n// Permissive string parsing.  Take in a number of formats, and output an object\n// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`\nexport function stringInputToObject(color: string): { r: number, g: number, b: number, a: number } {\n\n    color = color.replace(trimLeft, '').replace(trimRight, '').toLowerCase();\n\n    // Try to match string input using regular expressions.\n    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]\n    // Just return an object and let the conversion functions handle that.\n    // This way the result will be the same whether the tinycolor is initialized with string or object.\n    let match;\n    let obj;\n    if ((match = matchers.rgb.exec(color))) {\n        return { r: match[1], g: match[2], b: match[3], a: 1 };\n    }\n    if ((match = matchers.rgba.exec(color))) {\n        return { r: match[1], g: match[2], b: match[3], a: match[4] };\n    }\n\n    if ((match = matchers.hex8.exec(color))) {\n        return {\n            r: parseIntFromHex(match[1]),\n            g: parseIntFromHex(match[2]),\n            b: parseIntFromHex(match[3]),\n            a: convertHexToDecimal(match[4]),\n        };\n    }\n    if ((match = matchers.hex6.exec(color))) {\n        return {\n            r: parseIntFromHex(match[1]),\n            g: parseIntFromHex(match[2]),\n            b: parseIntFromHex(match[3]),\n            a: 1\n        };\n    }\n    if ((match = matchers.hex4.exec(color))) {\n        return {\n            r: parseIntFromHex(match[1] + '' + match[1]),\n            g: parseIntFromHex(match[2] + '' + match[2]),\n            b: parseIntFromHex(match[3] + '' + match[3]),\n            a: convertHexToDecimal(match[4] + '' + match[4]),\n        };\n    }\n    if ((match = matchers.hex3.exec(color))) {\n        return {\n            r: parseIntFromHex(match[1] + '' + match[1]),\n            g: parseIntFromHex(match[2] + '' + match[2]),\n            b: parseIntFromHex(match[3] + '' + match[3]),\n            a: 1\n        };\n    }\n\n    return null;\n}\n\nexport function createMissingDateImplError(provider: string) {\n    return Error(\n        `NgxMatColorPicker: No provider found for ${provider}. You must define MAT_COLOR_FORMATS in your module`);\n}"]}