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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>JSDoc: Source: editor/components/PaintBox.js</title> <script src="scripts/prettify/prettify.js"> </script> <script src="scripts/prettify/lang-css.js"> </script>  <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> </head> <body> <div id="main"> <h1 class="page-title">Source: editor/components/PaintBox.js</h1> <section> <article> <pre class="prettyprint source linenums"><code>import { jGraduate } from './jgraduate/jQuery.jGraduate.js'; /** * */ class PaintBox { /** * @param {string|Element|external:jQuery} container * @param {"fill"} type */ constructor (container, type) { // set up gradients to be used for the buttons const svgdocbox = new DOMParser().parseFromString( `<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14"> <rect fill="#000000" opacity="1" width="14" height="14"/> <defs><linearGradient id="gradbox_${PaintBox.ctr++}"/></defs> </svg>`, 'text/xml' ); let docElem = svgdocbox.documentElement; docElem = document.importNode(docElem, true); container.appendChild(docElem); this.rect = docElem.firstElementChild; this.defs = docElem.getElementsByTagName('defs')[0]; this.grad = this.defs.firstElementChild; // this.paint = new $.jGraduate.Paint({solidColor: color}); this.type = type; } /** * @param {module:jGraduate~Paint} paint * @returns {void} */ setPaint (paint) { this.paint = paint; const ptype = paint.type; const opac = paint.alpha / 100; let fillAttr = 'none'; switch (ptype) { case 'solidColor': fillAttr = (paint[ptype] !== 'none') ? '#' + paint[ptype] : paint[ptype]; break; case 'linearGradient': case 'radialGradient': { this.grad.remove(); this.grad = paint[ptype]; this.defs.appendChild(this.grad); const id = this.grad.id = 'gradbox_' + this.type; fillAttr = 'url(#' + id + ')'; break; } } this.rect.setAttribute('fill', fillAttr); this.rect.setAttribute('opacity', opac); } /** * @param {PlainObject} svgCanvas * @param {string} color * @param {Float} opac * @param {string} type * @returns {module:jGraduate~Paint} */ static getPaint (svgCanvas, color, opac, type) { // update the editor's fill paint const opts = { alpha: opac }; if (color.startsWith('url(#')) { let refElem = svgCanvas.getRefElem(color); refElem = (refElem) ? refElem.cloneNode(true) : document.querySelectorAll('#' + type + '_color defs *')[0]; if (!refElem) { console.error(`the color ${color} is referenced by an url that can't be identified - using 'none'`); opts.solidColor = 'none'; } else { opts[refElem.tagName] = refElem; } } else if (color.startsWith('#')) { opts.solidColor = color.substr(1); } return new jGraduate.Paint(opts); } /** * @param {PlainObject} svgcanvas * @param {PlainObject} selectedElement * @returns {any} */ update (svgcanvas, selectedElement) { if (!selectedElement) { return null; } const { type } = this; switch (selectedElement.tagName) { case 'use': case 'image': case 'foreignObject': // These elements don't have fill or stroke, so don't change // the current value return null; case 'g': case 'a': { const childs = selectedElement.getElementsByTagName('*'); let gPaint = null; for (let i = 0, len = childs.length; i < len; i++) { const elem = childs[i]; const p = elem.getAttribute(type); if (i === 0) { gPaint = p; } else if (gPaint !== p) { gPaint = null; break; } } if (gPaint === null) { // No common color, don't update anything this._paintColor = null; return null; } this._paintColor = gPaint; this._paintOpacity = 1; break; } default: { this._paintOpacity = Number.parseFloat(selectedElement.getAttribute(type + '-opacity')); if (Number.isNaN(this._paintOpacity)) { this._paintOpacity = 1.0; } const defColor = type === 'fill' ? 'black' : 'none'; this._paintColor = selectedElement.getAttribute(type) || defColor; } } this._paintOpacity *= 100; const paint = PaintBox.getPaint(svgcanvas, this._paintColor, this._paintOpacity, type); // update the rect inside #fill_color/#stroke_color this.setPaint(paint); return (paint); } } PaintBox.ctr = 0; export default PaintBox; </code></pre> </article> </section> </div> <nav> <h2><a href="index.html">Home</a></h2><h3>Modules</h3><ul><li><a href="module-blur.html">blur</a></li><li><a href="module-browser.html">browser</a></li><li><a href="module-clear.html">clear</a></li><li><a href="module-contextmenu.html">contextmenu</a></li><li><a href="module-coords.html">coords</a></li><li><a href="module-draw.html">draw</a></li><li><a href="module-elem-get-set%2520get%2520and%2520set%2520methods..html">elem-get-set get and set methods.</a></li><li><a href="module-event.html">event</a></li><li><a href="module-history.html">history</a></li><li><a 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