574 lines
15 KiB
JavaScript
574 lines
15 KiB
JavaScript
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/*
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* ext-connector.js
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*
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* Licensed under the Apache License, Version 2
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*
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* Copyright(c) 2010 Alexis Deveria
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*
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*/
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$(function() {
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svgCanvas.addExtension("Connector", function(S) {
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var svgcontent = S.svgcontent,
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svgroot = S.svgroot,
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getNextId = S.getNextId,
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getElem = S.getElem,
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addElem = S.addSvgElementFromJson,
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selManager = S.selectorManager,
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started = false,
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start_x,
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start_y,
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cur_line,
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start_elem,
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end_elem,
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connections = [],
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conn_sel = ".se_connector",
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se_ns,
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// connect_str = "-SE_CONNECT-",
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selElems = [];
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var lang_list = {
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"en":[
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{"id": "mode_connect", "title": "Connect two objects" }
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],
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"fr":[
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{"id": "mode_connect", "title": "Connecter deux objets"}
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]
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};
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function showPanel(on) {
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var conn_rules = $('#connector_rules');
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if(!conn_rules.length) {
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conn_rules = $('<style id="connector_rules"><\/style>').appendTo('head');
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}
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conn_rules.text(!on?"":"#tool_clone, #tool_topath, #tool_angle, #xy_panel { display: none !important; }");
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$('#connector_panel').toggle(on);
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}
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function setPoint(elem, pos, x, y, setMid) {
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var pts = elem.points;
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var 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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var pt_arr = elem.getAttribute("points").split(" ");
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for(var i=0; i< pt_arr.length; i++) {
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if(i == pos) {
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pt_arr[i] = x + ',' + y;
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}
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}
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elem.setAttribute("points",pt_arr.join(" "));
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}
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if(setMid) {
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// Add center point
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var pt_start = pts.getItem(0);
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var pt_end = pts.getItem(pts.numberOfItems-1);
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setPoint(elem, 1, (pt_end.x + pt_start.x)/2, (pt_end.y + pt_start.y)/2);
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}
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}
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function findConnectors() {
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// Check if selected elements have connections
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var elems = selElems;
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var i = elems.length;
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var connectors = $(svgcontent).find(conn_sel);
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if(!connectors.length) return;
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connections = [];
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var sel = ':not(a,g,svg,'+conn_sel+')';
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var all_els = [];
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// Get children from groups
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while(i--) {
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var elem = elems[i];
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if(!elem) continue;
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// Get all children that cannot contain children
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var solid_elems = $(elem).find(sel);
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// Include self if okay
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if($(elem).filter(sel).length) {
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solid_elems.push(elem);
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}
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$.merge(all_els, solid_elems);
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}
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i = all_els.length;
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if(i > 1) {
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// Multiselected, so unselect connector
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svgCanvas.removeFromSelection($(conn_sel).toArray());
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}
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// Loop through selected elements
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while(i--) {
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var elem = all_els[i];
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if(!elem) continue;
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// Element was deleted, so delete connector
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var was_deleted = !elem.parentNode;
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// Skip connector
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if($(elem).data('c_start')) continue;
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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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var start = $(this).data("c_start");
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var end = $(this).data("c_end");
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// Connector found for this element
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if(start == elem.id || end == elem.id) {
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if(was_deleted) {
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$(this).remove();
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return;
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}
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var bb = svgCanvas.getStrokedBBox([elem]);
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connections.push({
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elem: elem,
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connector: this,
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is_start: start == elem.id,
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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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function updateConnectors() {
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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();
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if(connections.length) {
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// Update line with element
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var i = connections.length;
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while(i--) {
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var conn = connections[i];
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var line = conn.connector;
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var elem = conn.elem;
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var sw = line.getAttribute('stroke-width');
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var pre = conn.is_start?'start':'end';
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// Update bbox for this element
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var 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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$(line).data(pre+'_bb', bb);
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var add_offset = $(line).data(pre+'_off');
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var alt_pre = conn.is_start?'end':'start';
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// Get center pt of connected element
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var bb2 = $(line).data(alt_pre+'_bb');
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var src_x = bb2.x + bb2.width/2;
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var src_y = bb2.y + bb2.height/2;
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// Set point of element being moved
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var pt = getBBintersect(src_x, src_y, bb, add_offset?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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var pt2 = getBBintersect(pt.x, pt.y, $(line).data(alt_pre + '_bb'), $(line).data(alt_pre + '_off')?sw:0);
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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.indexOf('AppleWebKit') != -1) {
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var pts = line.points;
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var len = pts.numberOfItems;
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var pt_arr = Array(len);
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for(var j=0; j< len; j++) {
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var pt = pts.getItem(j);
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pt_arr[j] = pt.x + ',' + pt.y;
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}
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line.setAttribute("points",pt_arr.join(" "));
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}
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}
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}
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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 = $.extend({}, bb);
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bb.width += offset;
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bb.height += offset;
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bb.x -= offset/2;
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bb.y -= offset/2;
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}
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var mid_x = bb.x + bb.width/2;
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var mid_y = bb.y + bb.height/2;
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var len_x = x - mid_x;
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var len_y = y - mid_y;
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var slope = Math.abs(len_y/len_x);
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var ratio;
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if(slope < bb.height/bb.width) {
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ratio = (bb.width/2) / Math.abs(len_x);
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} else {
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ratio = (bb.height/2) / Math.abs(len_y);
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}
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return {
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x: mid_x + len_x * ratio,
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y: mid_y + len_y * ratio
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}
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}
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// Do once
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(function() {
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var gse = svgCanvas.groupSelectedElements;
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svgCanvas.groupSelectedElements = function() {
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svgCanvas.removeFromSelection($(conn_sel).toArray());
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gse();
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}
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var mse = svgCanvas.moveSelectedElements;
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svgCanvas.moveSelectedElements = function() {
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svgCanvas.removeFromSelection($(conn_sel).toArray());
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mse.apply(this, arguments);
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updateConnectors();
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}
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se_ns = svgCanvas.getEditorNS();
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}());
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// Do on reset
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function init() {
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// Make sure all connectors have data set
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$(svgcontent).find('*').each(function() {
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var conn = this.getAttributeNS(se_ns, "connector");
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if(conn) {
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this.setAttribute('class', conn_sel.substr(1));
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var conn_data = conn.split(' ');
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$(this).data('c_start',conn_data[0])
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.data('c_end',conn_data[1]);
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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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return {
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name: "Connector",
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svgicons: "images/conn.svg",
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buttons: [{
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id: "mode_connect",
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type: "mode",
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icon: "images/cut.png",
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title: "Connect two objects",
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key: "Shift+3",
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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': function() {
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svgCanvas.setMode("connector");
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}
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}
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}],
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addLangData: function(lang) {
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return {
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data: lang_list[lang]
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};
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},
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mouseDown: function(opts) {
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var e = opts.event;
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start_x = opts.start_x,
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start_y = opts.start_y;
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var mode = svgCanvas.getMode();
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if(mode == "connector") {
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if(started) return;
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var mouse_target = e.target;
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var parents = $(mouse_target).parents();
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if($.inArray(svgcontent, parents) != -1) {
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// Connectable element
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start_elem = mouse_target;
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// Get center of source element
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var bb = svgCanvas.getStrokedBBox([start_elem]);
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var x = bb.x + bb.width/2;
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var y = bb.y + bb.height/2;
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started = true;
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cur_line = addElem({
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"element": "polyline",
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"attr": {
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"id": getNextId(),
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"points": (x+','+y+' '+x+','+y+' '+start_x+','+start_y),
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"stroke": '#000',
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"stroke-width": 3,
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"fill": "none",
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"opacity": .5,
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"style": "pointer-events:none"
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}
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});
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$(cur_line).data('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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} else if(mode == "select") {
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findConnectors();
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}
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},
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mouseMove: function(opts) {
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var zoom = svgCanvas.getZoom();
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var e = opts.event;
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var x = opts.mouse_x/zoom;
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var y = opts.mouse_y/zoom;
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var diff_x = x - start_x,
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diff_y = y - start_y;
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var mode = svgCanvas.getMode();
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if(mode == "connector" && started) {
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// Set start point (adjusts based on bb)
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var pt = getBBintersect(x, y, $(cur_line).data('start_bb'));
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start_x = pt.x;
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start_y = pt.y;
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setPoint(cur_line, 0, pt.x, pt.y, true);
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// Set end point
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setPoint(cur_line, 'end', x, y, true);
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} else if(mode == "select") {
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var slen = selElems.length;
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while(slen--) {
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var elem = selElems[slen];
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// Look for selected connector elements
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if(elem && $(elem).data('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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// Update line with element
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var i = connections.length;
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while(i--) {
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var conn = connections[i];
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var line = conn.connector;
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var elem = conn.elem;
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var pre = conn.is_start?'start':'end';
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var sw = line.getAttribute('stroke-width');
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|
|
||
|
|
// Update bbox for this element
|
||
|
|
var bb = $(line).data(pre+'_bb');
|
||
|
|
bb.x = conn.start_x + diff_x;
|
||
|
|
bb.y = conn.start_y + diff_y;
|
||
|
|
$(line).data(pre+'_bb', bb);
|
||
|
|
|
||
|
|
var alt_pre = conn.is_start?'end':'start';
|
||
|
|
|
||
|
|
// Get center pt of connected element
|
||
|
|
var bb2 = $(line).data(alt_pre+'_bb');
|
||
|
|
var src_x = bb2.x + bb2.width/2;
|
||
|
|
var src_y = bb2.y + bb2.height/2;
|
||
|
|
|
||
|
|
// Set point of element being moved
|
||
|
|
var pt = getBBintersect(src_x, src_y, bb, $(line).data(pre+'_off')?sw:0);
|
||
|
|
setPoint(line, conn.is_start?0:'end', pt.x, pt.y, true);
|
||
|
|
|
||
|
|
// Set point of connected element
|
||
|
|
var pt2 = getBBintersect(pt.x, pt.y, $(line).data(alt_pre + '_bb'), $(line).data(alt_pre+'_off')?sw:0);
|
||
|
|
setPoint(line, conn.is_start?'end':0, pt2.x, pt2.y, true);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
mouseUp: function(opts) {
|
||
|
|
var zoom = svgCanvas.getZoom();
|
||
|
|
var e = opts.event,
|
||
|
|
x = opts.mouse_x/zoom,
|
||
|
|
y = opts.mouse_y/zoom;
|
||
|
|
|
||
|
|
if(svgCanvas.getMode() == "connector") {
|
||
|
|
if(e.target.parentNode.parentNode != svgcontent) {
|
||
|
|
// Not a valid target element, so remove line
|
||
|
|
$(cur_line).remove();
|
||
|
|
started = false;
|
||
|
|
return {
|
||
|
|
keep: false,
|
||
|
|
element: null,
|
||
|
|
started: started
|
||
|
|
}
|
||
|
|
} else if(e.target == start_elem) {
|
||
|
|
// Start line through click
|
||
|
|
started = true;
|
||
|
|
return {
|
||
|
|
keep: true,
|
||
|
|
element: null,
|
||
|
|
started: started
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// Valid end element
|
||
|
|
end_elem = e.target;
|
||
|
|
var start_id = start_elem.id, end_id = end_elem.id;
|
||
|
|
var conn_str = start_id + " " + end_id;
|
||
|
|
var alt_str = end_id + " " + start_id;
|
||
|
|
// Don't create connector if one already exists
|
||
|
|
var dupe = $(svgcontent).find(conn_sel).filter(function() {
|
||
|
|
var conn = this.getAttributeNS(se_ns, "connector");
|
||
|
|
if(conn == conn_str || conn == alt_str) return true;
|
||
|
|
});
|
||
|
|
if(dupe.length) {
|
||
|
|
$(cur_line).remove();
|
||
|
|
return {
|
||
|
|
keep: false,
|
||
|
|
element: null,
|
||
|
|
started: false
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var bb = svgCanvas.getStrokedBBox([end_elem]);
|
||
|
|
|
||
|
|
var pt = getBBintersect(start_x, start_y, bb);
|
||
|
|
setPoint(cur_line, 'end', pt.x, pt.y, true);
|
||
|
|
$(cur_line)
|
||
|
|
.data("c_start", start_id)
|
||
|
|
.data("c_end", end_id)
|
||
|
|
.data("end_bb", bb);
|
||
|
|
se_ns = svgCanvas.getEditorNS(true);
|
||
|
|
cur_line.setAttributeNS(se_ns, "se:connector", conn_str);
|
||
|
|
cur_line.setAttribute('class', conn_sel.substr(1));
|
||
|
|
cur_line.setAttribute('opacity', 1);
|
||
|
|
svgCanvas.addToSelection([cur_line]);
|
||
|
|
svgCanvas.moveToBottomSelectedElement();
|
||
|
|
selManager.requestSelector(cur_line).showGrips(false);
|
||
|
|
started = false;
|
||
|
|
return {
|
||
|
|
keep: true,
|
||
|
|
element: cur_line,
|
||
|
|
started: started
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
selectedChanged: function(opts) {
|
||
|
|
|
||
|
|
// Use this to update the current selected elements
|
||
|
|
selElems = opts.elems;
|
||
|
|
|
||
|
|
var i = selElems.length;
|
||
|
|
|
||
|
|
while(i--) {
|
||
|
|
var elem = selElems[i];
|
||
|
|
if(elem && $(elem).data('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);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
elementChanged: function(opts) {
|
||
|
|
var 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")
|
||
|
|
)) {
|
||
|
|
var start = elem.getAttribute("marker-start");
|
||
|
|
var mid = elem.getAttribute("marker-mid");
|
||
|
|
var end = elem.getAttribute("marker-end");
|
||
|
|
cur_line = elem;
|
||
|
|
$(elem)
|
||
|
|
.data("start_off", !!start)
|
||
|
|
.data("end_off", !!end);
|
||
|
|
|
||
|
|
if(elem.tagName == "line" && mid) {
|
||
|
|
// Convert to polyline to accept mid-arrow
|
||
|
|
|
||
|
|
var x1 = elem.getAttribute('x1')-0;
|
||
|
|
var x2 = elem.getAttribute('x2')-0;
|
||
|
|
var y1 = elem.getAttribute('y1')-0;
|
||
|
|
var y2 = elem.getAttribute('y2')-0;
|
||
|
|
var id = elem.id;
|
||
|
|
|
||
|
|
var mid_pt = (' '+((x1+x2)/2)+','+((y1+y2)/2) + ' ');
|
||
|
|
var pline = addElem({
|
||
|
|
"element": "polyline",
|
||
|
|
"attr": {
|
||
|
|
"points": (x1+','+y1+ mid_pt +x2+','+y2),
|
||
|
|
"stroke": elem.getAttribute('stroke'),
|
||
|
|
"stroke-width": elem.getAttribute('stroke-width'),
|
||
|
|
"marker-mid": mid,
|
||
|
|
"fill": "none",
|
||
|
|
"opacity": elem.getAttribute('opacity') || 1
|
||
|
|
}
|
||
|
|
});
|
||
|
|
$(elem).after(pline).remove();
|
||
|
|
svgCanvas.clearSelection();
|
||
|
|
pline.id = id;
|
||
|
|
svgCanvas.addToSelection([pline]);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
updateConnectors();
|
||
|
|
},
|
||
|
|
toolButtonStateUpdate: function(opts) {
|
||
|
|
if(opts.nostroke) {
|
||
|
|
if ($('#mode_connect').hasClass('tool_button_current')) {
|
||
|
|
clickSelect();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$('#mode_connect')
|
||
|
|
.toggleClass('disabled',opts.nostroke);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
});
|
||
|
|
});
|