@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
148 lines • 16.4 kB
JavaScript
export class ThemeColor {
constructor(_r, _g, _b, _a = '1') {
this._r = _r;
this._g = _g;
this._b = _b;
this._a = _a;
}
/**
* Create a ThemeColor object from a CSS color string
* @param value The CSS color string to derive a ThemeColor object from
*/
static parse(value) {
let r, g, b, a = '1';
const rgbaPattern = /^rgba?\((\d+),\s*(\d+),\s*(\d+)(?:,\s*(\d+(?:\.\d+)?))?\)$/;
const shortHexPattern = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
const longHexPattern = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i;
const rgbaMatch = value.match(rgbaPattern);
const shortHexMatch = value.match(shortHexPattern);
const longHexMatch = value.match(longHexPattern);
if (rgbaMatch) {
r = rgbaMatch[1];
g = rgbaMatch[2];
b = rgbaMatch[3];
a = rgbaMatch[4] ? rgbaMatch[4] : '1';
}
else if (longHexMatch) {
r = parseInt(longHexMatch[1], 16).toString();
g = parseInt(longHexMatch[2], 16).toString();
b = parseInt(longHexMatch[3], 16).toString();
}
else if (shortHexMatch) {
r = parseInt(shortHexMatch[1] + shortHexMatch[1], 16).toString();
g = parseInt(shortHexMatch[2] + shortHexMatch[2], 16).toString();
b = parseInt(shortHexMatch[3] + shortHexMatch[3], 16).toString();
}
else {
throw new Error(`Cannot parse color - ${value} is not a valid color.`);
}
return new ThemeColor(r, g, b, a);
}
/**
* Clone a theme color so it can be modified without affecting other places using the color
* @param themeColor The original theme color to clone
*/
static from(themeColor) {
return new ThemeColor(themeColor.getRed(), themeColor.getGreen(), themeColor.getBlue(), themeColor.getAlpha());
}
/**
* Determine if an object is an instance of a theme color.
* Using a simple instanceof check will not always work in plunker
* where the ThemeColor is from @ux-aspects/ux-aspects and the color
* comes from @micro-focus/ux-aspects
*/
static isInstanceOf(themeColor) {
return (typeof themeColor === 'object' &&
// eslint-disable-next-line no-prototype-builtins
themeColor.hasOwnProperty('_r') &&
// eslint-disable-next-line no-prototype-builtins
themeColor.hasOwnProperty('_g') &&
// eslint-disable-next-line no-prototype-builtins
themeColor.hasOwnProperty('_b') &&
// eslint-disable-next-line no-prototype-builtins
themeColor.hasOwnProperty('_a'));
}
/**
* Convert the theme color to a CSS hex color code
*/
toHex() {
let red = parseInt(this._r).toString(16);
let green = parseInt(this._g).toString(16);
let blue = parseInt(this._b).toString(16);
if (red.length < 2) {
red = '0' + red;
}
if (green.length < 2) {
green = '0' + green;
}
if (blue.length < 2) {
blue = '0' + blue;
}
return '#' + red + green + blue;
}
/**
* Convert the theme color to a CSS rgb color code
*/
toRgb() {
return 'rgb(' + this._r + ', ' + this._g + ', ' + this._b + ')';
}
/**
* Convert the theme color to a CSS rgbs color code
*/
toRgba() {
return 'rgba(' + this._r + ', ' + this._g + ', ' + this._b + ', ' + this._a + ')';
}
/**
* Get the red value from the RGBA color value
*/
getRed() {
return this._r;
}
/**
* Get the green value from the RGBA color value
*/
getGreen() {
return this._g;
}
/**
* Get the blue value from the RGBA color value
*/
getBlue() {
return this._b;
}
/**
* Get the alpha value from the RGBA color value
*/
getAlpha() {
return this._a;
}
/**
* Set the red value from the RGBA color value
*/
setRed(red) {
this._r = red;
return this;
}
/**
* Set the green value from the RGBA color value
*/
setGreen(green) {
this._g = green;
return this;
}
/**
* Set the blue value from the RGBA color value
*/
setBlue(blue) {
this._b = blue;
return this;
}
/**
* Set the alpha value from the RGBA color value
*/
setAlpha(alpha) {
this._a = alpha.toString();
return this;
}
}
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rgbaMatch[4] : '1';\n        } else if (longHexMatch) {\n            r = parseInt(longHexMatch[1], 16).toString();\n            g = parseInt(longHexMatch[2], 16).toString();\n            b = parseInt(longHexMatch[3], 16).toString();\n        } else if (shortHexMatch) {\n            r = parseInt(shortHexMatch[1] + shortHexMatch[1], 16).toString();\n            g = parseInt(shortHexMatch[2] + shortHexMatch[2], 16).toString();\n            b = parseInt(shortHexMatch[3] + shortHexMatch[3], 16).toString();\n        } else {\n            throw new Error(`Cannot parse color - ${value} is not a valid color.`);\n        }\n        return new ThemeColor(r, g, b, a);\n    }\n\n    /**\n     * Clone a theme color so it can be modified without affecting other places using the color\n     * @param themeColor The original theme color to clone\n     */\n    static from(themeColor: ThemeColor): ThemeColor {\n        return new ThemeColor(themeColor.getRed(), themeColor.getGreen(), themeColor.getBlue(), themeColor.getAlpha());\n    }\n\n    /**\n     * Determine if an object is an instance of a theme color.\n     * Using a simple instanceof check will not always work in plunker\n     * where the ThemeColor is from @ux-aspects/ux-aspects and the color\n     * comes from @micro-focus/ux-aspects\n     */\n    static isInstanceOf(themeColor: unknown): themeColor is ThemeColor {\n        return (\n          typeof themeColor === 'object' &&\n          // eslint-disable-next-line no-prototype-builtins\n          themeColor.hasOwnProperty('_r') &&\n          // eslint-disable-next-line no-prototype-builtins\n          themeColor.hasOwnProperty('_g') &&\n          // eslint-disable-next-line no-prototype-builtins\n          themeColor.hasOwnProperty('_b') &&\n          // eslint-disable-next-line no-prototype-builtins\n          themeColor.hasOwnProperty('_a')\n        );\n      }\n\n    /**\n     * Convert the theme color to a CSS hex color code\n     */\n    toHex(): string {\n        let red = parseInt(this._r).toString(16);\n        let green = parseInt(this._g).toString(16);\n        let blue = parseInt(this._b).toString(16);\n\n        if (red.length < 2) {\n            red = '0' + red;\n        }\n        if (green.length < 2) {\n            green = '0' + green;\n        }\n        if (blue.length < 2) {\n            blue = '0' + blue;\n        }\n\n        return '#' + red + green + blue;\n    }\n\n    /**\n     * Convert the theme color to a CSS rgb color code\n     */\n    toRgb(): string {\n        return 'rgb(' + this._r + ', ' + this._g + ', ' + this._b + ')';\n    }\n\n    /**\n     * Convert the theme color to a CSS rgbs color code\n     */\n    toRgba(): string {\n        return 'rgba(' + this._r + ', ' + this._g + ', ' + this._b + ', ' + this._a + ')';\n    }\n\n    /**\n     * Get the red value from the RGBA color value\n     */\n    getRed(): string {\n        return this._r;\n    }\n\n    /**\n     * Get the green value from the RGBA color value\n     */\n    getGreen(): string {\n        return this._g;\n    }\n\n\n    /**\n     * Get the blue value from the RGBA color value\n     */\n    getBlue(): string {\n        return this._b;\n    }\n\n\n    /**\n     * Get the alpha value from the RGBA color value\n     */\n    getAlpha(): string {\n        return this._a;\n    }\n\n    /**\n     * Set the red value from the RGBA color value\n     */\n    setRed(red: string): this {\n        this._r = red;\n        return this;\n    }\n\n    /**\n     * Set the green value from the RGBA color value\n     */\n    setGreen(green: string): this {\n        this._g = green;\n        return this;\n    }\n\n    /**\n     * Set the blue value from the RGBA color value\n     */\n    setBlue(blue: string): this {\n        this._b = blue;\n        return this;\n    }\n\n    /**\n     * Set the alpha value from the RGBA color value\n     */\n    setAlpha(alpha: string | number): this {\n        this._a = alpha.toString();\n        return this;\n    }\n}"]}