660 lines
20 KiB
JavaScript
660 lines
20 KiB
JavaScript
/* eslint-disable unicorn/no-fn-reference-in-iterator */
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/**
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* 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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export default {
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name: 'connector',
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async init (S) {
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const svgEditor = this;
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const svgCanvas = svgEditor.canvas;
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const {getElem} = svgCanvas;
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const {$, svgroot, importLocale} = S,
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addElem = svgCanvas.addSVGElementFromJson,
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selManager = S.selectorManager,
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connSel = '.se_connector',
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// connect_str = '-SE_CONNECT-',
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elData = $.data;
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const strings = await importLocale();
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let startX,
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startY,
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curLine,
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startElem,
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endElem,
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seNs,
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{svgcontent} = S,
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started = false,
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connections = [],
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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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function getBBintersect (x, y, bb, offset) {
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if (offset) {
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offset -= 0;
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bb = $.extend({}, 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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function getOffset (side, line) {
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const giveOffset = line.getAttribute('marker-' + side);
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// const giveOffset = $(line).data(side+'_off');
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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 {undefined}
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*/
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function showPanel (on) {
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let connRules = $('#connector_rules');
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if (!connRules.length) {
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connRules = $('<style id="connector_rules"></style>').appendTo('head');
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}
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connRules.text(!on ? '' : '#tool_clone, #tool_topath, #tool_angle, #xy_panel { display: none !important; }');
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$('#connector_panel').toggle(on);
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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 {undefined}
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*/
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function 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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for (let i = 0; i < ptArr.length; i++) {
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if (i === pos) {
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ptArr[i] = x + ',' + y;
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}
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}
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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 {undefined}
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*/
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function updateLine (diffX, diffY) {
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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 = elData(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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elData(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 = elData(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)); // $(line).data(pre+'_off')?sw:0
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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, elData(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 {undefined}
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*/
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function findConnectors (elems = selElems) {
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const connectors = $(svgcontent).find(connSel);
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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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connectors.each(function () {
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let addThis;
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/**
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*
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* @returns {undefined}
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*/
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function add () {
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if (elems.includes(this)) {
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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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// Grab the ends
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const parts = [];
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['start', 'end'].forEach(function (pos, i) {
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const key = 'c_' + pos;
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let part = elData(this, 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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this.attributes['se:connector'].value.split(' ')[i]
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);
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elData(this, 'c_' + pos, part.id);
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elData(this, pos + '_bb', svgCanvas.getStrokedBBox([part]));
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} else part = document.getElementById(part);
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parts.push(part);
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}, this);
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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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$(cElem).parents().each(add);
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if (!cElem || !cElem.parentNode) {
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$(this).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: this,
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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 {undefined}
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*/
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function updateConnectors (elems) {
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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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elData(line, pre + '_bb', bb);
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/* const addOffset = */ elData(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 = elData(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, elData(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($(connSel).toArray());
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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 {undefined}
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*/
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function init () {
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// Make sure all connectors have data set
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$(svgcontent).find('*').each(function () {
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const conn = this.getAttributeNS(seNs, 'connector');
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if (conn) {
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this.setAttribute('class', connSel.substr(1));
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const connData = conn.split(' ');
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const sbb = svgCanvas.getStrokedBBox([getElem(connData[0])]);
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const ebb = svgCanvas.getStrokedBBox([getElem(connData[1])]);
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$(this).data('c_start', connData[0])
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.data('c_end', connData[1])
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.data('start_bb', sbb)
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.data('end_bb', ebb);
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svgCanvas.getEditorNS(true);
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}
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});
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// updateConnectors();
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}
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// $(svgroot).parent().mousemove(function (e) {
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// // if (started
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// // || svgCanvas.getMode() !== 'connector'
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// // || e.target.parentNode.parentNode !== svgcontent) return;
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//
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// console.log('y')
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// // if (e.target.parentNode.parentNode === svgcontent) {
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// //
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// // }
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// });
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const buttons = [{
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id: 'mode_connect',
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type: 'mode',
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icon: svgEditor.curConfig.imgPath + 'cut.png',
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includeWith: {
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button: '#tool_line',
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isDefault: false,
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position: 1
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},
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events: {
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click () {
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svgCanvas.setMode('connector');
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}
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}
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}];
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return {
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name: strings.name,
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svgicons: svgEditor.curConfig.imgPath + 'conn.svg',
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buttons: strings.buttons.map((button, i) => {
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return Object.assign(buttons[i], button);
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}),
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/* async */ addLangData ({lang}) { // , importLocale: importLoc
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return {
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data: strings.langList
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};
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},
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mouseDown (opts) {
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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;
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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 = $(mouseTarget).parents();
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if ($.inArray(svgcontent, parents) !== -1) {
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// Connectable element
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// If child of foreignObject, use parent
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const fo = $(mouseTarget).closest('foreignObject');
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startElem = fo.length ? fo[0] : 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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elData(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 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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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, elData(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 && elData(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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svgCanvas.getTransformList(elem).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 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 = $(mouseTarget).closest('foreignObject');
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if (fo.length) { mouseTarget = fo[0]; }
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const parents = $(mouseTarget).parents();
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if (mouseTarget === startElem) {
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// Start line through click
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started = true;
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return {
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keep: true,
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element: null,
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started
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};
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}
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if ($.inArray(svgcontent, parents) === -1) {
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// Not a valid target element, so remove line
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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.id, endId = 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 = $(svgcontent).find(connSel).filter(function () {
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const conn = this.getAttributeNS(seNs, 'connector');
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if (conn === connStr || conn === altStr) { return true; }
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return false;
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});
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if (dupe.length) {
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$(curLine).remove();
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return {
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keep: false,
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element: null,
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started: false
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};
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}
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const bb = svgCanvas.getStrokedBBox([endElem]);
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const pt = getBBintersect(startX, startY, bb, getOffset('start', curLine));
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setPoint(curLine, 'end', pt.x, pt.y, true);
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$(curLine)
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.data('c_start', startId)
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.data('c_end', endId)
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.data('end_bb', bb);
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seNs = svgCanvas.getEditorNS(true);
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curLine.setAttributeNS(seNs, 'se:connector', connStr);
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curLine.setAttribute('class', connSel.substr(1));
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curLine.setAttribute('opacity', 1);
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svgCanvas.addToSelection([curLine]);
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svgCanvas.moveToBottomSelectedElement();
|
|
selManager.requestSelector(curLine).showGrips(false);
|
|
started = false;
|
|
return {
|
|
keep: true,
|
|
element: curLine,
|
|
started
|
|
};
|
|
},
|
|
selectedChanged (opts) {
|
|
// TODO: Find better way to skip operations if no connectors are in use
|
|
if (!$(svgcontent).find(connSel).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 && elData(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) {
|
|
let elem = opts.elems[0];
|
|
if (elem && elem.tagName === 'svg' && elem.id === 'svgcontent') {
|
|
// Update svgcontent (can change on import)
|
|
svgcontent = elem;
|
|
init();
|
|
}
|
|
|
|
// Has marker, so change offset
|
|
if (elem && (
|
|
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;
|
|
$(elem)
|
|
.data('start_off', Boolean(start))
|
|
.data('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
|
|
}
|
|
});
|
|
$(elem).after(pline).remove();
|
|
svgCanvas.clearSelection();
|
|
pline.id = id;
|
|
svgCanvas.addToSelection([pline]);
|
|
elem = pline;
|
|
}
|
|
}
|
|
// Update line if it's a connector
|
|
if (elem.getAttribute('class') === connSel.substr(1)) {
|
|
const start = getElem(elData(elem, 'c_start'));
|
|
updateConnectors([start]);
|
|
} else {
|
|
updateConnectors();
|
|
}
|
|
},
|
|
IDsUpdated (input) {
|
|
const remove = [];
|
|
input.elems.forEach(function (elem) {
|
|
if ('se:connector' in elem.attr) {
|
|
elem.attr['se:connector'] = elem.attr['se:connector'].split(' ')
|
|
.map(function (oldID) { return input.changes[oldID]; }).join(' ');
|
|
|
|
// Check validity - the field would be something like 'svg_21 svg_22', but
|
|
// if one end is missing, it would be 'svg_21' and therefore fail this test
|
|
if (!(/. ./).test(elem.attr['se:connector'])) {
|
|
remove.push(elem.attr.id);
|
|
}
|
|
}
|
|
});
|
|
return {remove};
|
|
},
|
|
toolButtonStateUpdate (opts) {
|
|
if (opts.nostroke) {
|
|
if ($('#mode_connect').hasClass('tool_button_current')) {
|
|
svgEditor.clickSelect();
|
|
}
|
|
}
|
|
$('#mode_connect')
|
|
.toggleClass('disabled', opts.nostroke);
|
|
}
|
|
};
|
|
}
|
|
};
|