769 lines
21 KiB
JavaScript
769 lines
21 KiB
JavaScript
var svgEditorExtension_markers = (function () {
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'use strict';
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/**
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* @file ext-markers.js
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*
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* @license Apache-2.0
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*
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* @copyright 2010 Will Schleter based on ext-arrows.js by Copyright(c) 2010 Alexis Deveria
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*
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* This extension provides for the addition of markers to the either end
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* or the middle of a line, polyline, path, polygon.
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*
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* Markers may be either a graphic or arbitary text
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*
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* to simplify the coding and make the implementation as robust as possible,
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* markers are not shared - every object has its own set of markers.
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* this relationship is maintained by a naming convention between the
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* ids of the markers and the ids of the object
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*
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* The following restrictions exist for simplicty of use and programming
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* objects and their markers to have the same color
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* marker size is fixed
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* text marker font, size, and attributes are fixed
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* an application specific attribute - se_type - is added to each marker element
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* to store the type of marker
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*
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* @todo
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* remove some of the restrictions above
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* add option for keeping text aligned to horizontal
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* add support for dimension extension lines
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*
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*/
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var extMarkers = {
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name: 'markers',
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async init(S) {
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const strings = await S.importLocale();
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const svgEditor = this;
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const {
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$
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} = S;
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const svgCanvas = svgEditor.canvas;
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const // {svgcontent} = S,
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addElem = svgCanvas.addSVGElementFromJson;
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const mtypes = ['start', 'mid', 'end'];
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const markerPrefix = 'se_marker_';
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const idPrefix = 'mkr_'; // note - to add additional marker types add them below with a unique id
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// and add the associated icon(s) to marker-icons.svg
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// the geometry is normalized to a 100x100 box with the origin at lower left
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// Safari did not like negative values for low left of viewBox
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// remember that the coordinate system has +y downward
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const markerTypes = {
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nomarker: {},
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leftarrow: {
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element: 'path',
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attr: {
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d: 'M0,50 L100,90 L70,50 L100,10 Z'
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}
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},
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rightarrow: {
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element: 'path',
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attr: {
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d: 'M100,50 L0,90 L30,50 L0,10 Z'
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}
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},
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textmarker: {
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element: 'text',
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attr: {
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x: 0,
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y: 0,
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'stroke-width': 0,
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stroke: 'none',
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'font-size': 75,
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'font-family': 'serif',
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'text-anchor': 'left',
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'xml:space': 'preserve'
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}
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},
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forwardslash: {
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element: 'path',
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attr: {
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d: 'M30,100 L70,0'
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}
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},
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reverseslash: {
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element: 'path',
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attr: {
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d: 'M30,0 L70,100'
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}
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},
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verticalslash: {
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element: 'path',
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attr: {
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d: 'M50,0 L50,100'
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}
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},
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box: {
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element: 'path',
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attr: {
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d: 'M20,20 L20,80 L80,80 L80,20 Z'
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}
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},
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star: {
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element: 'path',
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attr: {
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d: 'M10,30 L90,30 L20,90 L50,10 L80,90 Z'
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}
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},
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xmark: {
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element: 'path',
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attr: {
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d: 'M20,80 L80,20 M80,80 L20,20'
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}
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},
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triangle: {
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element: 'path',
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attr: {
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d: 'M10,80 L50,20 L80,80 Z'
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}
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},
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mcircle: {
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element: 'circle',
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attr: {
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r: 30,
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cx: 50,
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cy: 50
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}
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}
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}; // duplicate shapes to support unfilled (open) marker types with an _o suffix
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['leftarrow', 'rightarrow', 'box', 'star', 'mcircle', 'triangle'].forEach(v => {
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markerTypes[v + '_o'] = markerTypes[v];
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});
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/**
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* @param {Element} elem - A graphic element will have an attribute like marker-start
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* @param {"marker-start"|"marker-mid"|"marker-end"} attr
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* @returns {Element} The marker element that is linked to the graphic element
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*/
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function getLinked(elem, attr) {
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const str = elem.getAttribute(attr);
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if (!str) {
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return null;
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}
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const m = str.match(/\(#(.*)\)/); // const m = str.match(/\(#(?<id>.+)\)/);
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// if (!m || !m.groups.id) {
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if (!m || m.length !== 2) {
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return null;
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}
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return svgCanvas.getElem(m[1]); // return svgCanvas.getElem(m.groups.id);
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}
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/**
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*
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* @param {"start"|"mid"|"end"} pos
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* @param {string} id
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* @returns {void}
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*/
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function setIcon(pos, id) {
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if (id.substr(0, 1) !== '\\') {
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id = '\\textmarker';
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}
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const ci = '#' + idPrefix + pos + '_' + id.substr(1);
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svgEditor.setIcon('#cur_' + pos + '_marker_list', $(ci).children());
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$(ci).addClass('current').siblings().removeClass('current');
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}
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let selElems;
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/**
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* Toggles context tool panel off/on. Sets the controls with the
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* selected element's settings.
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* @param {boolean} on
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* @returns {void}
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*/
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function showPanel(on) {
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$('#marker_panel').toggle(on);
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if (on) {
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const el = selElems[0];
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let val, ci;
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$.each(mtypes, function (i, pos) {
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const m = getLinked(el, 'marker-' + pos);
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const txtbox = $('#' + pos + '_marker');
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if (!m) {
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val = '\\nomarker';
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ci = val;
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txtbox.hide(); // hide text box
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} else {
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if (!m.attributes.se_type) {
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return;
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} // not created by this extension
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val = '\\' + m.attributes.se_type.textContent;
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ci = val;
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if (val === '\\textmarker') {
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val = m.lastChild.textContent; // txtbox.show(); // show text box
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} else {
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txtbox.hide(); // hide text box
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}
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}
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txtbox.val(val);
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setIcon(pos, ci);
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});
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}
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}
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/**
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* @param {string} id
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* @param {""|"\\nomarker"|"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} val
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* @returns {SVGMarkerElement}
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*/
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function addMarker(id, val) {
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const txtBoxBg = '#ffffff';
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const txtBoxBorder = 'none';
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const txtBoxStrokeWidth = 0;
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let marker = svgCanvas.getElem(id);
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if (marker) {
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return undefined;
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}
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if (val === '' || val === '\\nomarker') {
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return undefined;
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}
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const el = selElems[0];
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const color = el.getAttribute('stroke'); // NOTE: Safari didn't like a negative value in viewBox
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// so we use a standardized 0 0 100 100
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// with 50 50 being mapped to the marker position
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const strokeWidth = 10;
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let refX = 50;
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let refY = 50;
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let viewBox = '0 0 100 100';
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let markerWidth = 5;
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let markerHeight = 5;
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let seType;
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if (val.substr(0, 1) === '\\') {
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seType = val.substr(1);
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} else {
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seType = 'textmarker';
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}
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if (!markerTypes[seType]) {
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return undefined;
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} // an unknown type!
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// create a generic marker
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marker = addElem({
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element: 'marker',
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attr: {
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id,
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markerUnits: 'strokeWidth',
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orient: 'auto',
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style: 'pointer-events:none',
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se_type: seType
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}
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});
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if (seType !== 'textmarker') {
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const mel = addElem(markerTypes[seType]);
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const fillcolor = seType.substr(-2) === '_o' ? 'none' : color;
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mel.setAttribute('fill', fillcolor);
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mel.setAttribute('stroke', color);
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mel.setAttribute('stroke-width', strokeWidth);
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marker.append(mel);
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} else {
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const text = addElem(markerTypes[seType]); // have to add text to get bounding box
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text.textContent = val;
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const tb = text.getBBox(); // alert(tb.x + ' ' + tb.y + ' ' + tb.width + ' ' + tb.height);
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const pad = 1;
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const bb = tb;
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bb.x = 0;
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bb.y = 0;
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bb.width += pad * 2;
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bb.height += pad * 2; // shift text according to its size
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text.setAttribute('x', pad);
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text.setAttribute('y', bb.height - pad - tb.height / 4); // kludge?
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text.setAttribute('fill', color);
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refX = bb.width / 2 + pad;
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refY = bb.height / 2 + pad;
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viewBox = bb.x + ' ' + bb.y + ' ' + bb.width + ' ' + bb.height;
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markerWidth = bb.width / 10;
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markerHeight = bb.height / 10;
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const box = addElem({
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element: 'rect',
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attr: {
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x: bb.x,
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y: bb.y,
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width: bb.width,
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height: bb.height,
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fill: txtBoxBg,
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stroke: txtBoxBorder,
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'stroke-width': txtBoxStrokeWidth
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}
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});
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marker.setAttribute('orient', 0);
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marker.append(box, text);
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}
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marker.setAttribute('viewBox', viewBox);
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marker.setAttribute('markerWidth', markerWidth);
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marker.setAttribute('markerHeight', markerHeight);
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marker.setAttribute('refX', refX);
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marker.setAttribute('refY', refY);
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svgCanvas.findDefs().append(marker);
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return marker;
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}
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/**
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* @param {Element} elem
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* @returns {SVGPolylineElement}
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*/
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function convertline(elem) {
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// this routine came from the connectors extension
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// it is needed because midpoint markers don't work with line elements
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if (elem.tagName !== 'line') {
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return elem;
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} // Convert to polyline to accept mid-arrow
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const x1 = Number(elem.getAttribute('x1'));
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const x2 = Number(elem.getAttribute('x2'));
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const y1 = Number(elem.getAttribute('y1'));
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const y2 = Number(elem.getAttribute('y2'));
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const {
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id
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} = elem;
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const midPt = ' ' + (x1 + x2) / 2 + ',' + (y1 + y2) / 2 + ' ';
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const pline = addElem({
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element: 'polyline',
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attr: {
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points: x1 + ',' + y1 + midPt + x2 + ',' + y2,
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stroke: elem.getAttribute('stroke'),
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'stroke-width': elem.getAttribute('stroke-width'),
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fill: 'none',
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opacity: elem.getAttribute('opacity') || 1
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}
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});
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$.each(mtypes, function (i, pos) {
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// get any existing marker definitions
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const nam = 'marker-' + pos;
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const m = elem.getAttribute(nam);
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if (m) {
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pline.setAttribute(nam, elem.getAttribute(nam));
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}
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});
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const batchCmd = new S.BatchCommand();
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batchCmd.addSubCommand(new S.RemoveElementCommand(elem, elem.parentNode));
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batchCmd.addSubCommand(new S.InsertElementCommand(pline));
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$(elem).after(pline).remove();
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svgCanvas.clearSelection();
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pline.id = id;
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svgCanvas.addToSelection([pline]);
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S.addCommandToHistory(batchCmd);
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return pline;
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}
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/**
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*
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* @returns {void}
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*/
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function setMarker() {
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const poslist = {
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start_marker: 'start',
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mid_marker: 'mid',
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end_marker: 'end'
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};
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const pos = poslist[this.id];
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const markerName = 'marker-' + pos;
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const el = selElems[0];
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const marker = getLinked(el, markerName);
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if (marker) {
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$(marker).remove();
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}
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el.removeAttribute(markerName);
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let val = this.value;
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if (val === '') {
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val = '\\nomarker';
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}
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if (val === '\\nomarker') {
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setIcon(pos, val);
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svgCanvas.call('changed', selElems);
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return;
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} // Set marker on element
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const id = markerPrefix + pos + '_' + el.id;
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addMarker(id, val);
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svgCanvas.changeSelectedAttribute(markerName, 'url(#' + id + ')');
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if (el.tagName === 'line' && pos === 'mid') {
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convertline(el);
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}
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svgCanvas.call('changed', selElems);
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setIcon(pos, val);
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}
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/**
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* Called when the main system modifies an object. This routine changes
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* the associated markers to be the same color.
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* @param {Element} elem
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* @returns {void}
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*/
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function colorChanged(elem) {
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const color = elem.getAttribute('stroke');
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$.each(mtypes, function (i, pos) {
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const marker = getLinked(elem, 'marker-' + pos);
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if (!marker) {
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return;
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}
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if (!marker.attributes.se_type) {
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return;
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} // not created by this extension
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const ch = marker.lastElementChild;
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if (!ch) {
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return;
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}
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const curfill = ch.getAttribute('fill');
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const curstroke = ch.getAttribute('stroke');
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if (curfill && curfill !== 'none') {
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ch.setAttribute('fill', color);
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}
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if (curstroke && curstroke !== 'none') {
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ch.setAttribute('stroke', color);
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}
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});
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}
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/**
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* Called when the main system creates or modifies an object.
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* Its primary purpose is to create new markers for cloned objects.
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* @param {Element} el
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* @returns {void}
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*/
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function updateReferences(el) {
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$.each(mtypes, function (i, pos) {
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const id = markerPrefix + pos + '_' + el.id;
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const markerName = 'marker-' + pos;
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const marker = getLinked(el, markerName);
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if (!marker || !marker.attributes.se_type) {
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return;
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} // not created by this extension
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const url = el.getAttribute(markerName);
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if (url) {
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const len = el.id.length;
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const linkid = url.substr(-len - 1, len);
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if (el.id !== linkid) {
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const val = $('#' + pos + '_marker').attr('value');
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addMarker(id, val);
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svgCanvas.changeSelectedAttribute(markerName, 'url(#' + id + ')');
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if (el.tagName === 'line' && pos === 'mid') {
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el = convertline(el);
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}
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svgCanvas.call('changed', selElems);
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}
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}
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});
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} // simulate a change event a text box that stores the current element's marker type
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/**
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* @param {"start"|"mid"|"end"} pos
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* @param {string} val
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* @returns {void}
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*/
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function triggerTextEntry(pos, val) {
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$('#' + pos + '_marker').val(val);
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$('#' + pos + '_marker').change(); // const txtbox = $('#'+pos+'_marker');
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// if (val.substr(0,1)=='\\') {txtbox.hide();}
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// else {txtbox.show();}
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}
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/**
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* @param {"start"|"mid"|"end"} pos
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* @returns {Promise<void>} Resolves to `undefined`
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*/
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async function showTextPrompt(pos) {
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let def = $('#' + pos + '_marker').val();
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if (def.substr(0, 1) === '\\') {
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def = '';
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}
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const txt = await $.prompt('Enter text for ' + pos + ' marker', def);
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if (txt) {
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triggerTextEntry(pos, txt);
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}
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}
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/*
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function setMarkerSet(obj) {
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const parts = this.id.split('_');
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const set = parts[2];
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switch (set) {
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case 'off':
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triggerTextEntry('start','\\nomarker');
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triggerTextEntry('mid','\\nomarker');
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triggerTextEntry('end','\\nomarker');
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break;
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case 'dimension':
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triggerTextEntry('start','\\leftarrow');
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triggerTextEntry('end','\\rightarrow');
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await showTextPrompt('mid');
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break;
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case 'label':
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triggerTextEntry('mid','\\nomarker');
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triggerTextEntry('end','\\rightarrow');
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await showTextPrompt('start');
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break;
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}
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}
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*/
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// callback function for a toolbar button click
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/**
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* @param {Event} ev
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* @returns {Promise<void>} Resolves to `undefined`
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*/
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async function setArrowFromButton(ev) {
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const parts = this.id.split('_');
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const pos = parts[1];
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let val = parts[2];
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if (parts[3]) {
|
|
val += '_' + parts[3];
|
|
}
|
|
|
|
if (val !== 'textmarker') {
|
|
triggerTextEntry(pos, '\\' + val);
|
|
} else {
|
|
await showTextPrompt(pos);
|
|
}
|
|
}
|
|
/**
|
|
* @param {"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} id
|
|
* @returns {string}
|
|
*/
|
|
|
|
|
|
function getTitle(id) {
|
|
const {
|
|
langList
|
|
} = strings;
|
|
const item = langList.find(itm => {
|
|
return itm.id === id;
|
|
});
|
|
return item ? item.title : id;
|
|
}
|
|
/**
|
|
* Build the toolbar button array from the marker definitions.
|
|
* @returns {module:SVGEditor.Button[]}
|
|
*/
|
|
|
|
|
|
function buildButtonList() {
|
|
const buttons = []; // const i = 0;
|
|
|
|
/*
|
|
buttons.push({
|
|
id: idPrefix + 'markers_off',
|
|
title: 'Turn off all markers',
|
|
type: 'context',
|
|
events: { click: setMarkerSet },
|
|
panel: 'marker_panel'
|
|
});
|
|
buttons.push({
|
|
id: idPrefix + 'markers_dimension',
|
|
title: 'Dimension',
|
|
type: 'context',
|
|
events: { click: setMarkerSet },
|
|
panel: 'marker_panel'
|
|
});
|
|
buttons.push({
|
|
id: idPrefix + 'markers_label',
|
|
title: 'Label',
|
|
type: 'context',
|
|
events: { click: setMarkerSet },
|
|
panel: 'marker_panel'
|
|
});
|
|
*/
|
|
|
|
$.each(mtypes, function (k, pos) {
|
|
const listname = pos + '_marker_list';
|
|
let def = true;
|
|
Object.keys(markerTypes).forEach(function (id) {
|
|
const title = getTitle(String(id));
|
|
buttons.push({
|
|
id: idPrefix + pos + '_' + id,
|
|
svgicon: id,
|
|
icon: svgEditor.curConfig.extIconsPath + 'markers-' + id + '.png',
|
|
title,
|
|
type: 'context',
|
|
events: {
|
|
click: setArrowFromButton
|
|
},
|
|
panel: 'marker_panel',
|
|
list: listname,
|
|
isDefault: def
|
|
});
|
|
def = false;
|
|
});
|
|
});
|
|
return buttons;
|
|
}
|
|
|
|
const contextTools = [{
|
|
type: 'input',
|
|
panel: 'marker_panel',
|
|
id: 'start_marker',
|
|
size: 3,
|
|
events: {
|
|
change: setMarker
|
|
}
|
|
}, {
|
|
type: 'button-select',
|
|
panel: 'marker_panel',
|
|
id: 'start_marker_list',
|
|
colnum: 3,
|
|
events: {
|
|
change: setArrowFromButton
|
|
}
|
|
}, {
|
|
type: 'input',
|
|
panel: 'marker_panel',
|
|
id: 'mid_marker',
|
|
defval: '',
|
|
size: 3,
|
|
events: {
|
|
change: setMarker
|
|
}
|
|
}, {
|
|
type: 'button-select',
|
|
panel: 'marker_panel',
|
|
id: 'mid_marker_list',
|
|
colnum: 3,
|
|
events: {
|
|
change: setArrowFromButton
|
|
}
|
|
}, {
|
|
type: 'input',
|
|
panel: 'marker_panel',
|
|
id: 'end_marker',
|
|
size: 3,
|
|
events: {
|
|
change: setMarker
|
|
}
|
|
}, {
|
|
type: 'button-select',
|
|
panel: 'marker_panel',
|
|
id: 'end_marker_list',
|
|
colnum: 3,
|
|
events: {
|
|
change: setArrowFromButton
|
|
}
|
|
}];
|
|
return {
|
|
name: strings.name,
|
|
svgicons: svgEditor.curConfig.extIconsPath + 'markers-icons.xml',
|
|
|
|
callback() {
|
|
$('#marker_panel').addClass('toolset').hide();
|
|
},
|
|
|
|
/* async */
|
|
addLangData({
|
|
importLocale,
|
|
lang
|
|
}) {
|
|
return {
|
|
data: strings.langList
|
|
};
|
|
},
|
|
|
|
selectedChanged(opts) {
|
|
// Use this to update the current selected elements
|
|
// console.log('selectChanged',opts);
|
|
selElems = opts.elems;
|
|
const markerElems = ['line', 'path', 'polyline', 'polygon'];
|
|
let i = selElems.length;
|
|
|
|
while (i--) {
|
|
const elem = selElems[i];
|
|
|
|
if (elem && markerElems.includes(elem.tagName)) {
|
|
if (opts.selectedElement && !opts.multiselected) {
|
|
showPanel(true);
|
|
} else {
|
|
showPanel(false);
|
|
}
|
|
} else {
|
|
showPanel(false);
|
|
}
|
|
}
|
|
},
|
|
|
|
elementChanged(opts) {
|
|
// console.log('elementChanged',opts);
|
|
const elem = opts.elems[0];
|
|
|
|
if (elem && (elem.getAttribute('marker-start') || elem.getAttribute('marker-mid') || elem.getAttribute('marker-end'))) {
|
|
colorChanged(elem);
|
|
updateReferences(elem);
|
|
} // changing_flag = false; // Not apparently in use
|
|
|
|
},
|
|
|
|
buttons: buildButtonList(),
|
|
context_tools: strings.contextTools.map((contextTool, i) => {
|
|
return Object.assign(contextTools[i], contextTool);
|
|
})
|
|
};
|
|
}
|
|
|
|
};
|
|
|
|
return extMarkers;
|
|
|
|
}());
|