devextreme/esm/viz/tree_map/colorizing.discrete.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/viz/tree_map/colorizing.discrete.js)
 * Version: 24.2.7
 * Build date: Mon Apr 28 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
function discreteColorizer(options, themeManager, root) {
    const palette = themeManager.createPalette(options.palette, {
        useHighlight: true,
        extensionMode: options.paletteExtensionMode,
        count: options.colorizeGroups ? getNodesCount(root) : getLeafsCount(root)
    });
    return (options.colorizeGroups ? discreteGroupColorizer : discreteLeafColorizer)(palette, root)
}

function getLeafsCount(root) {
    const allNodes = root.nodes.slice();
    let i;
    const ii = allNodes.length;
    let count = 0;
    let node;
    for (i = 0; i < ii; ++i) {
        node = allNodes[i];
        if (node.isNode()) {
            count = Math.max(count, getLeafsCount(node))
        } else {
            count += 1
        }
    }
    return count
}

function discreteLeafColorizer(palette) {
    const colors = palette.generateColors();
    return function(node) {
        return colors[node.index]
    }
}

function getNodesCount(root) {
    const allNodes = root.nodes.slice();
    let i;
    const ii = allNodes.length;
    let count = 0;
    let node;
    for (i = 0; i < ii; ++i) {
        node = allNodes[i];
        if (node.isNode()) {
            count += getNodesCount(node) + 1
        }
    }
    return count
}

function prepareDiscreteGroupColors(palette, root) {
    const colors = {};
    let allNodes = root.nodes.slice();
    let i;
    let ii = allNodes.length;
    let node;
    for (i = 0; i < ii; ++i) {
        node = allNodes[i];
        if (node.isNode()) {
            allNodes = allNodes.concat(node.nodes);
            ii = allNodes.length
        } else if (!colors[node.parent._id]) {
            colors[node.parent._id] = palette.getNextColor()
        }
    }
    return colors
}

function discreteGroupColorizer(palette, root) {
    const colors = prepareDiscreteGroupColors(palette, root);
    return function(node) {
        return colors[node._id]
    }
}
import {
    addColorizer
} from "./colorizing";
addColorizer("discrete", discreteColorizer);
export default discreteColorizer;