660 lines
22 KiB
JavaScript
660 lines
22 KiB
JavaScript
/**
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* @file ext-connector.js
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*
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* @license MIT
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*
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* @copyright 2010 Alexis Deveria
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*
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*/
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const name = "connector";
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const loadExtensionTranslation = async function (svgEditor) {
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let translationModule;
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const lang = svgEditor.configObj.pref('lang');
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try {
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// eslint-disable-next-line no-unsanitized/method
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translationModule = await import(`./locale/${lang}.js`);
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} catch (_error) {
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// eslint-disable-next-line no-console
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console.warn(`Missing translation (${lang}) for ${name} - using 'en'`);
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// eslint-disable-next-line no-unsanitized/method
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translationModule = await import(`./locale/en.js`);
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}
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svgEditor.i18next.addResourceBundle(lang, name, translationModule.default);
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};
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export default {
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name,
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async init(S) {
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const svgEditor = this;
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const { svgCanvas } = svgEditor;
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const { getElem, $id, mergeDeep } = svgCanvas;
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const { svgroot } = S;
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const addElem = svgCanvas.addSVGElementFromJson;
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const selManager = S.selectorManager;
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await loadExtensionTranslation(svgEditor);
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let startX;
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let startY;
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let curLine;
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let startElem;
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let endElem;
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let seNs;
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let { svgcontent } = S;
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let started = false;
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let connections = [];
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let selElems = [];
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/**
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*
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* @param {Float} x
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* @param {Float} y
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* @param {module:utilities.BBoxObject} bb
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* @param {Float} offset
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* @returns {module:math.XYObject}
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*/
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const getBBintersect = (x, y, bb, offset) => {
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if (offset) {
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offset -= 0;
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bb = mergeDeep({}, bb);
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bb.width += offset;
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bb.height += offset;
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bb.x -= offset / 2;
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bb.y -= offset / 2;
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}
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const midX = bb.x + bb.width / 2;
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const midY = bb.y + bb.height / 2;
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const lenX = x - midX;
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const lenY = y - midY;
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const slope = Math.abs(lenY / lenX);
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let ratio;
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if (slope < bb.height / bb.width) {
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ratio = (bb.width / 2) / Math.abs(lenX);
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} else {
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ratio = lenY
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? (bb.height / 2) / Math.abs(lenY)
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: 0;
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}
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return {
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x: midX + lenX * ratio,
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y: midY + lenY * ratio
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};
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};
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/**
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* @param {"start"|"end"} side
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* @param {Element} line
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* @returns {Float}
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*/
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const getOffset = (side, line) => {
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const giveOffset = line.getAttribute('marker-' + side);
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// TODO: Make this number (5) be based on marker width/height
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const size = line.getAttribute('stroke-width') * 5;
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return giveOffset ? size : 0;
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};
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/**
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* @param {boolean} on
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* @returns {void}
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*/
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const showPanel = (on) => {
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let connRules = $id('connector_rules');
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if (!connRules) {
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connRules = document.createElement('style');
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connRules.setAttribute('id', 'connector_rules');
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document.getElementsByTagName("head")[0].appendChild(connRules);
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}
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connRules.textContent = (!on ? '' : '#tool_clone, #tool_topath, #tool_angle, #xy_panel { display: none !important; }');
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if ($id('connector_panel'))
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$id('connector_panel').style.display = (on) ? 'block' : 'none';
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};
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/**
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* @param {Element} elem
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* @param {Integer|"end"} pos
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* @param {Float} x
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* @param {Float} y
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* @param {boolean} [setMid]
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* @returns {void}
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*/
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const setPoint = (elem, pos, x, y, setMid) => {
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const pts = elem.points;
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const pt = svgroot.createSVGPoint();
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pt.x = x;
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pt.y = y;
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if (pos === 'end') { pos = pts.numberOfItems - 1; }
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// TODO: Test for this on init, then use alt only if needed
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try {
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pts.replaceItem(pt, pos);
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} catch (err) {
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// Should only occur in FF which formats points attr as "n,n n,n", so just split
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const ptArr = elem.getAttribute('points').split(' ');
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ptArr[pos] = x + ',' + y;
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elem.setAttribute('points', ptArr.join(' '));
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}
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if (setMid) {
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// Add center point
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const ptStart = pts.getItem(0);
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const ptEnd = pts.getItem(pts.numberOfItems - 1);
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setPoint(elem, 1, (ptEnd.x + ptStart.x) / 2, (ptEnd.y + ptStart.y) / 2);
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}
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};
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/**
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* @param {Float} diffX
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* @param {Float} diffY
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* @returns {void}
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*/
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const updateLine = (diffX, diffY) => {
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const dataStorage = svgCanvas.getDataStorage();
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// Update line with element
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let i = connections.length;
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while (i--) {
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const conn = connections[i];
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const line = conn.connector;
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// const {elem} = conn;
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const pre = conn.is_start ? 'start' : 'end';
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// const sw = line.getAttribute('stroke-width') * 5;
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// Update bbox for this element
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const bb = dataStorage.get(line, pre + '_bb');
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bb.x = conn.start_x + diffX;
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bb.y = conn.start_y + diffY;
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dataStorage.put(line, pre + '_bb', bb);
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const altPre = conn.is_start ? 'end' : 'start';
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// Get center pt of connected element
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const bb2 = dataStorage.get(line, altPre + '_bb');
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const srcX = bb2.x + bb2.width / 2;
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const srcY = bb2.y + bb2.height / 2;
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// Set point of element being moved
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const pt = getBBintersect(srcX, srcY, bb, getOffset(pre, line));
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setPoint(line, conn.is_start ? 0 : 'end', pt.x, pt.y, true);
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// Set point of connected element
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const pt2 = getBBintersect(pt.x, pt.y, dataStorage.get(line, altPre + '_bb'), getOffset(altPre, line));
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setPoint(line, conn.is_start ? 'end' : 0, pt2.x, pt2.y, true);
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}
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};
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/**
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*
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* @param {Element[]} [elems=selElems] Array of elements
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* @returns {void}
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*/
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const findConnectors = (elems = selElems) => {
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const dataStorage = svgCanvas.getDataStorage();
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// const connectors = svgcontent.querySelectorAll('.se_connector');
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const connectors = svgcontent.querySelectorAll('.se_connector');
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connections = [];
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// Loop through connectors to see if one is connected to the element
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Array.prototype.forEach.call(connectors, function (ethis) {
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let addThis;
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// Grab the ends
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const parts = [];
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[ 'start', 'end' ].forEach( (pos, i) => {
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const key = 'c_' + pos;
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let part = dataStorage.get(ethis, key);
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if (part === null || part === undefined) { // Does this ever return nullish values?
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part = document.getElementById(
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ethis.attributes['se:connector'].value.split(' ')[i]
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);
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dataStorage.put(ethis, 'c_' + pos, part.id);
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dataStorage.put(ethis, pos + '_bb', svgCanvas.getStrokedBBox([ part ]));
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} else part = $id(part);
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parts.push(part);
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}, ethis);
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for (let i = 0; i < 2; i++) {
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const cElem = parts[i];
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addThis = false;
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// The connected element might be part of a selected group
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const parents = svgCanvas.getParents(cElem.parentNode);
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Array.prototype.forEach.call(parents, function (el) {
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if (elems.includes(el)) {
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// Pretend this element is selected
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addThis = true;
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}
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});
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if (!cElem || !cElem.parentNode) {
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ethis.remove();
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continue;
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}
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if (elems.includes(cElem) || addThis) {
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const bb = svgCanvas.getStrokedBBox([ cElem ]);
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connections.push({
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elem: cElem,
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connector: ethis,
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is_start: (i === 0),
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start_x: bb.x,
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start_y: bb.y
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});
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}
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}
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});
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};
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/**
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* @param {Element[]} [elems=selElems]
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* @returns {void}
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*/
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const updateConnectors = (elems) => {
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const dataStorage = svgCanvas.getDataStorage();
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// Updates connector lines based on selected elements
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// Is not used on mousemove, as it runs getStrokedBBox every time,
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// which isn't necessary there.
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findConnectors(elems);
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if (connections.length) {
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// Update line with element
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let i = connections.length;
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while (i--) {
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const conn = connections[i];
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const line = conn.connector;
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const { elem } = conn;
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// const sw = line.getAttribute('stroke-width') * 5;
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const pre = conn.is_start ? 'start' : 'end';
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// Update bbox for this element
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const bb = svgCanvas.getStrokedBBox([ elem ]);
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bb.x = conn.start_x;
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bb.y = conn.start_y;
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dataStorage.put(line, pre + '_bb', bb);
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/* const addOffset = */ dataStorage.get(line, pre + '_off');
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const altPre = conn.is_start ? 'end' : 'start';
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// Get center pt of connected element
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const bb2 = dataStorage.get(line, altPre + '_bb');
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const srcX = bb2.x + bb2.width / 2;
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const srcY = bb2.y + bb2.height / 2;
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// Set point of element being moved
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let pt = getBBintersect(srcX, srcY, bb, getOffset(pre, line));
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setPoint(line, conn.is_start ? 0 : 'end', pt.x, pt.y, true);
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// Set point of connected element
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const pt2 = getBBintersect(pt.x, pt.y, dataStorage.get(line, altPre + '_bb'), getOffset(altPre, line));
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setPoint(line, conn.is_start ? 'end' : 0, pt2.x, pt2.y, true);
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// Update points attribute manually for webkit
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if (navigator.userAgent.includes('AppleWebKit')) {
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const pts = line.points;
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const len = pts.numberOfItems;
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const ptArr = [];
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for (let j = 0; j < len; j++) {
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pt = pts.getItem(j);
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ptArr[j] = pt.x + ',' + pt.y;
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}
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line.setAttribute('points', ptArr.join(' '));
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}
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}
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}
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};
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// Do once
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(function () {
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const gse = svgCanvas.groupSelectedElements;
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svgCanvas.groupSelectedElements = function (...args) {
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svgCanvas.removeFromSelection(document.querySelectorAll('.se_connector'));
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return gse.apply(this, args);
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};
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const mse = svgCanvas.moveSelectedElements;
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svgCanvas.moveSelectedElements = function (...args) {
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const cmd = mse.apply(this, args);
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updateConnectors();
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return cmd;
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};
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seNs = svgCanvas.getEditorNS();
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}());
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/**
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* Do on reset.
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* @returns {void}
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*/
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const init = () => {
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const dataStorage = svgCanvas.getDataStorage();
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// Make sure all connectors have data set
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const elements = svgcontent.querySelectorAll('*');
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elements.forEach(function (curthis) {
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const conn = curthis.getAttributeNS(seNs, 'connector');
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if (conn) {
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curthis.setAttribute('class', 'se_connector');
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const connData = conn.split(' ');
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const sbb = svgCanvas.getStrokedBBox([ getElem(connData[0]) ]);
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const ebb = svgCanvas.getStrokedBBox([ getElem(connData[1]) ]);
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dataStorage.put(curthis, 'c_start', connData[0]);
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dataStorage.put(curthis, 'c_end', connData[1]);
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dataStorage.put(curthis, 'start_bb', sbb);
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dataStorage.put(curthis, 'end_bb', ebb);
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svgCanvas.getEditorNS(true);
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}
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});
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};
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return {
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name: svgEditor.i18next.t(`${name}:name`),
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callback() {
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const btitle = `${name}:langListTitle`;
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// eslint-disable-next-line no-unsanitized/property
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const buttonTemplate = `
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<se-button id="mode_connect" title="${btitle}" src="conn.svg"></se-button>
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`;
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svgCanvas.insertChildAtIndex($id('tools_left'), buttonTemplate, 13);
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$id('mode_connect').addEventListener("click", () => {
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if (this.leftPanel.updateLeftPanel("ext-panning")) {
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svgCanvas.setMode('connector');
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}
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});
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},
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/* async */ addLangData({ _lang }) { // , importLocale: importLoc
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return {
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data: [
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{ id: 'mode_connect', title: svgEditor.i18next.t(`${name}:langListTitle`) }
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]
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};
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},
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mouseDown(opts) {
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const dataStorage = svgCanvas.getDataStorage();
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const e = opts.event;
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startX = opts.start_x;
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startY = opts.start_y;
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const mode = svgCanvas.getMode();
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const { curConfig: { initStroke } } = svgEditor.configObj;
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if (mode === 'connector') {
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if (started) { return undefined; }
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const mouseTarget = e.target;
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const parents = svgCanvas.getParents(mouseTarget.parentNode);
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if (parents.includes(svgcontent)) {
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// Connectable element
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// If child of foreignObject, use parent
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const fo = svgCanvas.getClosest(mouseTarget.parentNode, 'foreignObject');
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startElem = fo ? fo : mouseTarget;
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// Get center of source element
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const bb = svgCanvas.getStrokedBBox([ startElem ]);
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const x = bb.x + bb.width / 2;
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const y = bb.y + bb.height / 2;
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started = true;
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curLine = addElem({
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element: 'polyline',
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attr: {
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id: svgCanvas.getNextId(),
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points: (x + ',' + y + ' ' + x + ',' + y + ' ' + startX + ',' + startY),
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stroke: '#' + initStroke.color,
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'stroke-width': (!startElem.stroke_width || startElem.stroke_width === 0)
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? initStroke.width
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: startElem.stroke_width,
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fill: 'none',
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opacity: initStroke.opacity,
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style: 'pointer-events:none'
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}
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});
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dataStorage.put(curLine, 'start_bb', bb);
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}
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return {
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started: true
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};
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}
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if (mode === 'select') {
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findConnectors();
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}
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return undefined;
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},
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mouseMove(opts) {
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const dataStorage = svgCanvas.getDataStorage();
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const zoom = svgCanvas.getZoom();
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// const e = opts.event;
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const x = opts.mouse_x / zoom;
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const y = opts.mouse_y / zoom;
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const diffX = x - startX;
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const diffY = y - startY;
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const mode = svgCanvas.getMode();
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if (mode === 'connector' && started) {
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// const sw = curLine.getAttribute('stroke-width') * 3;
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// Set start point (adjusts based on bb)
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const pt = getBBintersect(x, y, dataStorage.get(curLine, 'start_bb'), getOffset('start', curLine));
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startX = pt.x;
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startY = pt.y;
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setPoint(curLine, 0, pt.x, pt.y, true);
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// Set end point
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setPoint(curLine, 'end', x, y, true);
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} else if (mode === 'select') {
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let slen = selElems.length;
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while (slen--) {
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const elem = selElems[slen];
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// Look for selected connector elements
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if (elem && dataStorage.has(elem, 'c_start')) {
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// Remove the "translate" transform given to move
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svgCanvas.removeFromSelection([ elem ]);
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elem.transform.baseVal.clear();
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}
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}
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if (connections.length) {
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updateLine(diffX, diffY);
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}
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}
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},
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mouseUp(opts) {
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const dataStorage = svgCanvas.getDataStorage();
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// const zoom = svgCanvas.getZoom();
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const e = opts.event;
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// , x = opts.mouse_x / zoom,
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// , y = opts.mouse_y / zoom,
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let mouseTarget = e.target;
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if (svgCanvas.getMode() !== 'connector') {
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return undefined;
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}
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const fo = svgCanvas.getClosest(mouseTarget.parentNode, 'foreignObject');
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if (fo) { mouseTarget = fo; }
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const parents = svgCanvas.getParents(mouseTarget.parentNode);
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if (mouseTarget === startElem) {
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// Start line through click
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started = true;
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return {
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keep: true,
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element: null,
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started
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};
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}
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if (parents.indexOf(svgcontent) === -1) {
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// Not a valid target element, so remove line
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if (curLine)
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curLine.remove();
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started = false;
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return {
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keep: false,
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element: null,
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started
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};
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}
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// Valid end element
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endElem = mouseTarget;
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const startId = (startElem) ? startElem.id : '';
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const endId = (endElem) ? endElem.id : '';
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const connStr = startId + ' ' + endId;
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const altStr = endId + ' ' + startId;
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// Don't create connector if one already exists
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const dupe = Array.prototype.filter.call(svgcontent.querySelectorAll('.se_connector'), function (aThis) {
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const conn = aThis.getAttributeNS(seNs, 'connector');
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if (conn === connStr || conn === altStr) { return true; }
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return false;
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});
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if (dupe.length) {
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curLine.remove();
|
|
return {
|
|
keep: false,
|
|
element: null,
|
|
started: false
|
|
};
|
|
}
|
|
|
|
const bb = svgCanvas.getStrokedBBox([ endElem ]);
|
|
|
|
const pt = getBBintersect(startX, startY, bb, getOffset('start', curLine));
|
|
setPoint(curLine, 'end', pt.x, pt.y, true);
|
|
dataStorage.put(curLine, 'c_start', startId);
|
|
dataStorage.put(curLine, 'c_end', endId);
|
|
dataStorage.put(curLine, 'end_bb', bb);
|
|
seNs = svgCanvas.getEditorNS(true);
|
|
curLine.setAttributeNS(seNs, 'se:connector', connStr);
|
|
curLine.setAttribute('class', 'se_connector');
|
|
curLine.setAttribute('opacity', 1);
|
|
svgCanvas.addToSelection([ curLine ]);
|
|
svgCanvas.moveToBottomSelectedElement();
|
|
selManager.requestSelector(curLine).showGrips(false);
|
|
started = false;
|
|
return {
|
|
keep: true,
|
|
element: curLine,
|
|
started
|
|
};
|
|
},
|
|
selectedChanged(opts) {
|
|
const dataStorage = svgCanvas.getDataStorage();
|
|
// TODO: Find better way to skip operations if no connectors are in use
|
|
if (!svgcontent.querySelectorAll('.se_connector').length) { return; }
|
|
|
|
if (svgCanvas.getMode() === 'connector') {
|
|
svgCanvas.setMode('select');
|
|
}
|
|
|
|
// Use this to update the current selected elements
|
|
selElems = opts.elems;
|
|
|
|
let i = selElems.length;
|
|
while (i--) {
|
|
const elem = selElems[i];
|
|
if (elem && dataStorage.has(elem, 'c_start')) {
|
|
selManager.requestSelector(elem).showGrips(false);
|
|
if (opts.selectedElement && !opts.multiselected) {
|
|
// TODO: Set up context tools and hide most regular line tools
|
|
showPanel(true);
|
|
} else {
|
|
showPanel(false);
|
|
}
|
|
} else {
|
|
showPanel(false);
|
|
}
|
|
}
|
|
updateConnectors();
|
|
},
|
|
elementChanged(opts) {
|
|
const dataStorage = svgCanvas.getDataStorage();
|
|
let elem = opts.elems[0];
|
|
if (!elem) return;
|
|
if (elem.tagName === 'svg' && elem.id === 'svgcontent') {
|
|
// Update svgcontent (can change on import)
|
|
svgcontent = elem;
|
|
init();
|
|
}
|
|
|
|
// Has marker, so change offset
|
|
if (
|
|
elem.getAttribute('marker-start') ||
|
|
elem.getAttribute('marker-mid') ||
|
|
elem.getAttribute('marker-end')
|
|
) {
|
|
const start = elem.getAttribute('marker-start');
|
|
const mid = elem.getAttribute('marker-mid');
|
|
const end = elem.getAttribute('marker-end');
|
|
curLine = elem;
|
|
dataStorage.put(elem, 'start_off', Boolean(start));
|
|
dataStorage.put(elem, 'end_off', Boolean(end));
|
|
|
|
if (elem.tagName === 'line' && mid) {
|
|
// Convert to polyline to accept mid-arrow
|
|
|
|
const x1 = Number(elem.getAttribute('x1'));
|
|
const x2 = Number(elem.getAttribute('x2'));
|
|
const y1 = Number(elem.getAttribute('y1'));
|
|
const y2 = Number(elem.getAttribute('y2'));
|
|
const { id } = elem;
|
|
|
|
const midPt = (' ' + ((x1 + x2) / 2) + ',' + ((y1 + y2) / 2) + ' ');
|
|
const pline = addElem({
|
|
element: 'polyline',
|
|
attr: {
|
|
points: (x1 + ',' + y1 + midPt + x2 + ',' + y2),
|
|
stroke: elem.getAttribute('stroke'),
|
|
'stroke-width': elem.getAttribute('stroke-width'),
|
|
'marker-mid': mid,
|
|
fill: 'none',
|
|
opacity: elem.getAttribute('opacity') || 1
|
|
}
|
|
});
|
|
elem.insertAdjacentElement('afterend', pline);
|
|
elem.remove();
|
|
svgCanvas.clearSelection();
|
|
pline.id = id;
|
|
svgCanvas.addToSelection([ pline ]);
|
|
elem = pline;
|
|
}
|
|
}
|
|
// Update line if it's a connector
|
|
if (elem.getAttribute('class') === 'se_connector') {
|
|
const start = getElem(dataStorage.get(elem, 'c_start'));
|
|
updateConnectors([ start ]);
|
|
} else {
|
|
updateConnectors();
|
|
}
|
|
},
|
|
IDsUpdated(input) {
|
|
const remove = [];
|
|
input.elems.forEach(function (elem) {
|
|
if ('se:connector' in elem.attr) {
|
|
elem.attr['se:connector'] = elem.attr['se:connector'].split(' ')
|
|
.map(function (oldID) { return input.changes[oldID]; }).join(' ');
|
|
|
|
// Check validity - the field would be something like 'svg_21 svg_22', but
|
|
// if one end is missing, it would be 'svg_21' and therefore fail this test
|
|
if (!(/. ./).test(elem.attr['se:connector'])) {
|
|
remove.push(elem.attr.id);
|
|
}
|
|
}
|
|
});
|
|
return { remove };
|
|
},
|
|
toolButtonStateUpdate(opts) {
|
|
const button = document.getElementById('mode_connect');
|
|
if (opts.nostroke && button.pressed === true) {
|
|
svgEditor.clickSelect();
|
|
}
|
|
button.disabled = opts.nostroke;
|
|
}
|
|
};
|
|
}
|
|
};
|