pdf-lib/es/api/colors.js

Create and modify PDF files with JavaScript

import { setFillingCmykColor, setFillingGrayscaleColor, setFillingRgbColor, setStrokingCmykColor, setStrokingGrayscaleColor, setStrokingRgbColor, } from "./operators";
import { assertRange, error } from "../utils";
export var ColorTypes;
(function (ColorTypes) {
    ColorTypes["Grayscale"] = "Grayscale";
    ColorTypes["RGB"] = "RGB";
    ColorTypes["CMYK"] = "CMYK";
})(ColorTypes || (ColorTypes = {}));
export var grayscale = function (gray) {
    assertRange(gray, 'gray', 0.0, 1.0);
    return { type: ColorTypes.Grayscale, gray: gray };
};
export var rgb = function (red, green, blue) {
    assertRange(red, 'red', 0, 1);
    assertRange(green, 'green', 0, 1);
    assertRange(blue, 'blue', 0, 1);
    return { type: ColorTypes.RGB, red: red, green: green, blue: blue };
};
export var cmyk = function (cyan, magenta, yellow, key) {
    assertRange(cyan, 'cyan', 0, 1);
    assertRange(magenta, 'magenta', 0, 1);
    assertRange(yellow, 'yellow', 0, 1);
    assertRange(key, 'key', 0, 1);
    return { type: ColorTypes.CMYK, cyan: cyan, magenta: magenta, yellow: yellow, key: key };
};
var Grayscale = ColorTypes.Grayscale, RGB = ColorTypes.RGB, CMYK = ColorTypes.CMYK;
// prettier-ignore
export var setFillingColor = function (color) {
    return color.type === Grayscale ? setFillingGrayscaleColor(color.gray)
        : color.type === RGB ? setFillingRgbColor(color.red, color.green, color.blue)
            : color.type === CMYK ? setFillingCmykColor(color.cyan, color.magenta, color.yellow, color.key)
                : error("Invalid color: " + JSON.stringify(color));
};
// prettier-ignore
export var setStrokingColor = function (color) {
    return color.type === Grayscale ? setStrokingGrayscaleColor(color.gray)
        : color.type === RGB ? setStrokingRgbColor(color.red, color.green, color.blue)
            : color.type === CMYK ? setStrokingCmykColor(color.cyan, color.magenta, color.yellow, color.key)
                : error("Invalid color: " + JSON.stringify(color));
};
// prettier-ignore
export var componentsToColor = function (comps, scale) {
    if (scale === void 0) { scale = 1; }
    return ((comps === null || comps === void 0 ? void 0 : comps.length) === 1 ? grayscale(comps[0] * scale)
        : (comps === null || comps === void 0 ? void 0 : comps.length) === 3 ? rgb(comps[0] * scale, comps[1] * scale, comps[2] * scale)
            : (comps === null || comps === void 0 ? void 0 : comps.length) === 4 ? cmyk(comps[0] * scale, comps[1] * scale, comps[2] * scale, comps[3] * scale)
                : undefined);
};
// prettier-ignore
export var colorToComponents = function (color) {
    return color.type === Grayscale ? [color.gray]
        : color.type === RGB ? [color.red, color.green, color.blue]
            : color.type === CMYK ? [color.cyan, color.magenta, color.yellow, color.key]
                : error("Invalid color: " + JSON.stringify(color));
};
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