1 | /*
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2 | * ext-markers.js
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3 | *
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4 | * Licensed under the Apache License, Version 2
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5 | *
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6 | * Copyright(c) 2010 Will Schleter
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7 | * based on ext-arrows.js by Copyright(c) 2010 Alexis Deveria
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8 | *
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9 | * This extension provides for the addition of markers to the either end
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10 | * or the middle of a line, polyline, path, polygon.
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11 | *
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12 | * Markers may be either a graphic or arbitary text
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13 | *
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14 | * to simplify the coding and make the implementation as robust as possible,
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15 | * markers are not shared - every object has its own set of markers.
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16 | * this relationship is maintained by a naming convention between the
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17 | * ids of the markers and the ids of the object
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18 | *
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19 | * The following restrictions exist for simplicty of use and programming
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20 | * objects and their markers to have the same color
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21 | * marker size is fixed
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22 | * text marker font, size, and attributes are fixed
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23 | * an application specific attribute - se_type - is added to each marker element
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24 | * to store the type of marker
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25 | *
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26 | * TODO:
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27 | * remove some of the restrictions above
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28 | * add option for keeping text aligned to horizontal
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29 | * add support for dimension extension lines
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30 | *
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31 | */
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32 |
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33 | methodDraw.addExtension("Markers", function(S) {
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34 | var svgcontent = S.svgcontent,
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35 | addElem = S.addSvgElementFromJson,
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36 | selElems;
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37 |
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38 | var mtypes = ['start','mid','end'];
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39 |
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40 | var marker_prefix = 'se_marker_';
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41 | var id_prefix = 'mkr_';
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42 |
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43 | // note - to add additional marker types add them below with a unique id
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44 | // and add the associated icon(s) to marker-icons.svg
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45 | // the geometry is normallized to a 100x100 box with the origin at lower left
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46 | // Safari did not like negative values for low left of viewBox
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47 | // remember that the coordinate system has +y downward
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48 | var marker_types = {
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49 | nomarker: {},
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50 | leftarrow:
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51 | {element:'path', attr:{d:'M0,50 L100,90 L70,50 L100,10 Z'}},
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52 | rightarrow:
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53 | {element:'path', attr:{d:'M100,50 L0,90 L30,50 L0,10 Z'}},
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54 | textmarker:
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55 | {element:'text', attr: {x:0, y:0,'stroke-width':0,'stroke':'none','font-size':75,'font-family':'serif','text-anchor':'left',
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56 | 'xml:space': 'preserve'}},
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57 | forwardslash:
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58 | {element:'path', attr:{d:'M30,100 L70,0'}},
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59 | reverseslash:
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60 | {element:'path', attr:{d:'M30,0 L70,100'}},
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61 | verticalslash:
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62 | {element:'path', attr:{d:'M50,0 L50,100'}},
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63 | box:
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64 | {element:'path', attr:{d:'M20,20 L20,80 L80,80 L80,20 Z'}},
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65 | star:
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66 | {element:'path', attr:{d:'M10,30 L90,30 L20,90 L50,10 L80,90 Z'}},
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67 | xmark:
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68 | {element:'path', attr:{d:'M20,80 L80,20 M80,80 L20,20'}},
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69 | triangle:
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70 | {element:'path', attr:{d:'M10,80 L50,20 L80,80 Z'}},
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71 | mcircle:
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72 | {element:'circle', attr:{r:30, cx:50, cy:50}}
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73 | }
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74 |
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75 |
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76 | var lang_list = {
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77 | "en":[
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78 | {id: "start_marker_list", title: "Select start marker type" },
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79 | {id: "mid_marker_list", title: "Select mid marker type" },
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80 | {id: "end_marker_list", title: "Select end marker type" },
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81 | {id: "nomarker", title: "No Marker" },
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82 | {id: "leftarrow", title: "Left Arrow" },
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83 | {id: "rightarrow", title: "Right Arrow" },
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84 | {id: "textmarker", title: "Text Marker" },
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85 | {id: "forwardslash", title: "Forward Slash" },
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86 | {id: "reverseslash", title: "Reverse Slash" },
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87 | {id: "verticalslash", title: "Vertical Slash" },
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88 | {id: "box", title: "Box" },
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89 | {id: "star", title: "Star" },
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90 | {id: "xmark", title: "X" },
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91 | {id: "triangle", title: "Triangle" },
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92 | {id: "mcircle", title: "Circle" },
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93 | {id: "leftarrow_o", title: "Open Left Arrow" },
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94 | {id: "rightarrow_o", title: "Open Right Arrow" },
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95 | {id: "box_o", title: "Open Box" },
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96 | {id: "star_o", title: "Open Star" },
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97 | {id: "triangle_o", title: "Open Triangle" },
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98 | {id: "mcircle_o", title: "Open Circle" }
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99 | ]
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100 | };
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101 |
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102 |
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103 | // duplicate shapes to support unfilled (open) marker types with an _o suffix
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104 | $.each(['leftarrow','rightarrow','box','star','mcircle','triangle'],function(i,v) {
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105 | marker_types[v+'_o'] = marker_types[v];
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106 | });
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107 |
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108 | // elem = a graphic element will have an attribute like marker-start
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109 | // attr - marker-start, marker-mid, or marker-end
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110 | // returns the marker element that is linked to the graphic element
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111 | function getLinked(elem, attr) {
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112 | var str = elem.getAttribute(attr);
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113 | if(!str) return null;
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114 | var m = str.match(/\(\#(.*)\)/);
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115 | if(!m || m.length !== 2) {
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116 | return null;
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117 | }
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118 | return S.getElem(m[1]);
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119 | }
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120 |
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121 | //toggles context tool panel off/on
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122 | //sets the controls with the selected element's settings
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123 | function showPanel(on) {
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124 | $('#marker_panel').toggle(on);
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125 | if ($('#marker_panel_title').length < 1) {
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126 | $('#marker_panel').prepend("<h4 id='marker_panel_title'>Arrows</h4>")
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127 | }
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128 |
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129 | if(on) {
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130 | var el = selElems[0];
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131 | var val;
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132 | var ci;
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133 |
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134 | $.each(mtypes, function(i, pos) {
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135 | var m=getLinked(el,"marker-"+pos);
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136 | var txtbox = $('#'+pos+'_marker');
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137 | if (!m) {
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138 | val='\\nomarker';
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139 | ci=val;
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140 | txtbox.hide() // hide text box
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141 | } else {
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142 | if (!m.attributes.se_type) return; // not created by this extension
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143 | val='\\'+m.attributes.se_type.textContent;
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144 | ci=val;
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145 | if (val=='\\textmarker') {
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146 | val=m.lastChild.textContent;
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147 | //txtbox.show(); // show text box
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148 | } else {
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149 | txtbox.hide() // hide text box
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150 | }
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151 | }
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152 | txtbox.val(val);
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153 | setIcon(pos,ci);
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154 | })
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155 | }
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156 | }
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157 |
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158 | function addMarker(id, val) {
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159 | var txt_box_bg = '#ffffff';
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160 | var txt_box_border = 'none';
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161 | var txt_box_stroke_width = 0;
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162 |
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163 | var marker = S.getElem(id);
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164 |
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165 | if (marker) return;
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166 |
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167 | if (val=='' || val=='\\nomarker') return;
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168 |
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169 | var el = selElems[0];
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170 | var color = el.getAttribute('stroke');
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171 | //NOTE: Safari didn't like a negative value in viewBox
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172 | //so we use a standardized 0 0 100 100
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173 | //with 50 50 being mapped to the marker position
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174 | var refX = 50;
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175 | var refY = 50;
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176 | var viewBox = "0 0 100 100";
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177 | var markerWidth = 5;
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178 | var markerHeight = 5;
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179 | var strokeWidth = 10;
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180 | if (val.substr(0,1)=='\\') se_type=val.substr(1);
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181 | else se_type='textmarker';
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182 |
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183 | if (!marker_types[se_type]) return; // an unknown type!
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184 |
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185 | // create a generic marker
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186 | marker = addElem({
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187 | "element": "marker",
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188 | "attr": {
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189 | "id": id,
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190 | "markerUnits": "strokeWidth",
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191 | "orient": "auto",
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192 | "style": "pointer-events:none",
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193 | "se_type": se_type
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194 | }
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195 | });
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196 |
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197 | if (se_type!='textmarker') {
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198 | var mel = addElem(marker_types[se_type]);
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199 | var fillcolor = color;
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200 | if (se_type.substr(-2)=='_o') fillcolor='none';
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201 | mel.setAttribute('fill',fillcolor);
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202 | mel.setAttribute('stroke',color);
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203 | mel.setAttribute('stroke-width',strokeWidth);
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204 | marker.appendChild(mel);
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205 | } else {
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206 | var text = addElem(marker_types[se_type]);
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207 | // have to add text to get bounding box
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208 | text.textContent = val;
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209 | var tb=text.getBBox();
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210 | //alert( tb.x + " " + tb.y + " " + tb.width + " " + tb.height);
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211 | var pad=1;
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212 | var bb = tb;
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213 | bb.x = 0;
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214 | bb.y = 0;
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215 | bb.width += pad*2;
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216 | bb.height += pad*2;
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217 | // shift text according to its size
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218 | text.setAttribute('x', pad);
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219 | text.setAttribute('y', bb.height - pad - tb.height/4); // kludge?
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220 | text.setAttribute('fill',color);
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221 | refX = bb.width/2+pad;
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222 | refY = bb.height/2+pad;
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223 | viewBox = bb.x + " " + bb.y + " " + bb.width + " " + bb.height;
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224 | markerWidth =bb.width/10;
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225 | markerHeight = bb.height/10;
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226 |
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227 | var box = addElem({
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228 | "element": "rect",
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229 | "attr": {
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230 | "x": bb.x,
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231 | "y": bb.y,
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232 | "width": bb.width,
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233 | "height": bb.height,
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234 | "fill": txt_box_bg,
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235 | "stroke": txt_box_border,
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236 | "stroke-width": txt_box_stroke_width
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237 | }
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238 | });
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239 | marker.setAttribute("orient",0);
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240 | marker.appendChild(box);
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241 | marker.appendChild(text);
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242 | }
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243 |
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244 | marker.setAttribute("viewBox",viewBox);
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245 | marker.setAttribute("markerWidth", markerWidth);
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246 | marker.setAttribute("markerHeight", markerHeight);
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247 | marker.setAttribute("refX", refX);
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248 | marker.setAttribute("refY", refY);
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249 | S.findDefs().appendChild(marker);
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250 |
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251 | return marker;
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252 | }
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253 |
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254 |
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255 | function setMarker() {
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256 | var poslist={'start_marker':'start','mid_marker':'mid','end_marker':'end'};
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257 | var pos = poslist[this.id];
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258 | var marker_name = 'marker-'+pos;
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259 | var val = this.value;
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260 | var el = selElems[0];
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261 | var marker = getLinked(el, marker_name);
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262 | if (marker) $(marker).remove();
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263 | el.removeAttribute(marker_name);
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264 | if (val=='') val='\\nomarker';
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265 | if (val=='\\nomarker') {
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266 | setIcon(pos,val);
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267 | S.call("changed", selElems);
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268 | return;
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269 | }
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270 | // Set marker on element
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271 | var id = marker_prefix + pos + '_' + el.id;
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272 | addMarker(id, val);
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273 | svgCanvas.changeSelectedAttribute(marker_name, "url(#" + id + ")");
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274 | if (el.tagName == "line" && pos=='mid') el=convertline(el);
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275 | S.call("changed", selElems);
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276 | setIcon(pos,val);
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277 | }
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278 |
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279 | function convertline(elem) {
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280 | // this routine came from the connectors extension
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281 | // it is needed because midpoint markers don't work with line elements
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282 | if (!(elem.tagName == "line")) return elem;
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283 |
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284 | // Convert to polyline to accept mid-arrow
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285 |
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286 | var x1 = elem.getAttribute('x1')-0;
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287 | var x2 = elem.getAttribute('x2')-0;
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288 | var y1 = elem.getAttribute('y1')-0;
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289 | var y2 = elem.getAttribute('y2')-0;
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290 | var id = elem.id;
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291 |
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292 | var mid_pt = (' '+((x1+x2)/2)+','+((y1+y2)/2) + ' ');
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293 | var pline = addElem({
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294 | "element": "polyline",
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295 | "attr": {
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296 | "points": (x1+','+y1+ mid_pt +x2+','+y2),
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297 | "stroke": elem.getAttribute('stroke'),
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298 | "stroke-width": elem.getAttribute('stroke-width'),
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299 | "fill": "none",
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300 | "opacity": elem.getAttribute('opacity') || 1
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301 | }
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302 | });
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303 | $.each(mtypes, function(i, pos) { // get any existing marker definitions
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304 | var nam = 'marker-'+pos;
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305 | var m = elem.getAttribute(nam);
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306 | if (m) pline.setAttribute(nam,elem.getAttribute(nam));
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307 | });
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308 |
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309 | var batchCmd = new S.BatchCommand();
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310 | batchCmd.addSubCommand(new S.RemoveElementCommand(elem, elem.parentNode));
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311 | batchCmd.addSubCommand(new S.InsertElementCommand(pline));
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312 |
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313 | $(elem).after(pline).remove();
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314 | svgCanvas.clearSelection();
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315 | pline.id = id;
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316 | svgCanvas.addToSelection([pline]);
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317 | S.addCommandToHistory(batchCmd);
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318 | return pline;
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319 | }
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320 |
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321 | // called when the main system modifies an object
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322 | // this routine changes the associated markers to be the same color
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323 | function colorChanged(elem) {
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324 | var color = elem.getAttribute('stroke');
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325 |
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326 | $.each(mtypes, function(i, pos) {
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327 | var marker = getLinked(elem, 'marker-'+pos);
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328 | if (!marker) return;
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329 | if (!marker.attributes.se_type) return; //not created by this extension
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330 | var ch = marker.lastElementChild;
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331 | if (!ch) return;
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332 | var curfill = ch.getAttribute("fill");
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333 | var curstroke = ch.getAttribute("stroke")
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334 | if (curfill && curfill!='none') ch.setAttribute("fill",color);
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335 | if (curstroke && curstroke!='none') ch.setAttribute("stroke",color);
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336 | });
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337 | }
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338 |
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339 | // called when the main system creates or modifies an object
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340 | // primary purpose is create new markers for cloned objects
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341 | function updateReferences(el) {
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342 | $.each(mtypes, function (i,pos) {
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343 | var id = marker_prefix + pos + '_' + el.id;
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344 | var marker_name = 'marker-'+pos;
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345 | var marker = getLinked(el, marker_name);
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346 | if (!marker || !marker.attributes.se_type) return; //not created by this extension
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347 | var url = el.getAttribute(marker_name);
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348 | if (url) {
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349 | var len = el.id.length;
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350 | var linkid = url.substr(-len-1,len);
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351 | if (el.id != linkid) {
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352 | var val = $('#'+pos+'_marker').attr('value');
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353 | addMarker(id, val);
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354 | svgCanvas.changeSelectedAttribute(marker_name, "url(#" + id + ")");
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355 | if (el.tagName == "line" && pos=='mid') el=convertline(el);
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356 | S.call("changed", selElems);
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357 | }
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358 | }
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359 | });
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360 | }
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361 |
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362 | // simulate a change event a text box that stores the current element's marker type
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363 | function triggerTextEntry(pos,val) {
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364 | $('#'+pos+'_marker').val(val);
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365 | $('#'+pos+'_marker').change();
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366 | var txtbox = $('#'+pos+'_marker');
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367 | //if (val.substr(0,1)=='\\') txtbox.hide();
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368 | //else txtbox.show();
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369 | }
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370 |
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371 | function setIcon(pos,id) {
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372 | if (id.substr(0,1)!='\\') id='\\textmarker'
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373 | var ci = '#'+id_prefix+pos+'_'+id.substr(1);
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374 | methodDraw.setIcon('#cur_' + pos +'_marker_list', $(ci).children());
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375 | $(ci).addClass('current').siblings().removeClass('current');
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376 | }
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377 |
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378 | function setMarkerSet(obj) {
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379 | var parts = this.id.split('_');
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380 | var set = parts[2];
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381 | switch (set) {
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382 | case 'off':
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383 | triggerTextEntry('start','\\nomarker');
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384 | triggerTextEntry('mid','\\nomarker');
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385 | triggerTextEntry('end','\\nomarker');
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386 | break;
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387 | case 'dimension':
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388 | triggerTextEntry('start','\\leftarrow');
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389 | triggerTextEntry('end','\\rightarrow');
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390 | showTextPrompt('mid');
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391 | break;
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392 | case 'label':
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393 | triggerTextEntry('mid','\\nomarker');
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394 | triggerTextEntry('end','\\rightarrow');
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395 | showTextPrompt('start');
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396 | break;
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397 | }
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398 | }
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399 |
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400 | function showTextPrompt(pos) {
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401 | var def = $('#'+pos+'_marker').val();
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402 | if (def.substr(0,1)=='\\') def='';
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403 | $.prompt('Enter text for ' + pos + ' marker', def , function(txt) { if (txt) triggerTextEntry(pos,txt); });
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404 | }
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405 |
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406 | // callback function for a toolbar button click
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407 | function setArrowFromButton(obj) {
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408 |
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409 | var parts = this.id.split('_');
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410 | var pos = parts[1];
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411 | var val = parts[2];
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412 | if (parts[3]) val+='_'+parts[3];
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413 |
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414 | if (val!='textmarker') {
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415 | triggerTextEntry(pos,'\\'+val);
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416 | } else {
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417 | showTextPrompt(pos);
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418 | }
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419 | }
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420 |
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421 | function getTitle(lang,id) {
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422 | var list = lang_list[lang];
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423 | for (var i in list) {
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424 | if (list[i].id==id) return list[i].title;
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425 | }
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426 | return id;
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427 | }
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428 |
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429 |
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430 | // build the toolbar button array from the marker definitions
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431 | // TODO: need to incorporate language specific titles
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432 | function buildButtonList() {
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433 | var buttons=[];
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434 | var i=0;
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435 | /*
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436 | buttons.push({
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437 | id:id_prefix + 'markers_off',
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438 | title:'Turn off all markers',
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439 | type:'context',
|
---|
440 | events: { 'click': setMarkerSet },
|
---|
441 | panel: 'marker_panel'
|
---|
442 | });
|
---|
443 | buttons.push({
|
---|
444 | id:id_prefix + 'markers_dimension',
|
---|
445 | title:'Dimension',
|
---|
446 | type:'context',
|
---|
447 | events: { 'click': setMarkerSet },
|
---|
448 | panel: 'marker_panel'
|
---|
449 | });
|
---|
450 | buttons.push({
|
---|
451 | id:id_prefix + 'markers_label',
|
---|
452 | title:'Label',
|
---|
453 | type:'context',
|
---|
454 | events: { 'click': setMarkerSet },
|
---|
455 | panel: 'marker_panel'
|
---|
456 | });
|
---|
457 | */
|
---|
458 | $.each(mtypes,function(k,pos) {
|
---|
459 | var listname = pos + "_marker_list";
|
---|
460 | var def = true;
|
---|
461 | $.each(marker_types,function(id,v) {
|
---|
462 | var title = getTitle('en',id);
|
---|
463 | buttons.push({
|
---|
464 | id:id_prefix + pos + "_" + id,
|
---|
465 | svgicon:id,
|
---|
466 | title:title,
|
---|
467 | type:'context',
|
---|
468 | events: { 'click': setArrowFromButton },
|
---|
469 | panel:'marker_panel',
|
---|
470 | list: listname,
|
---|
471 | isDefault: def
|
---|
472 | });
|
---|
473 | def = false;
|
---|
474 | });
|
---|
475 | });
|
---|
476 | return buttons;
|
---|
477 | }
|
---|
478 |
|
---|
479 | return {
|
---|
480 | name: "Markers",
|
---|
481 | svgicons: "extensions/markers-icons.xml",
|
---|
482 | buttons: buildButtonList(),
|
---|
483 | context_tools: [
|
---|
484 | {
|
---|
485 | type: "input",
|
---|
486 | panel: "marker_panel",
|
---|
487 | title: "Start marker",
|
---|
488 | id: "start_marker",
|
---|
489 | label: "Start",
|
---|
490 | size: 3,
|
---|
491 | events: { change: setMarker }
|
---|
492 | },{
|
---|
493 | type: "button-select",
|
---|
494 | panel: "marker_panel",
|
---|
495 | title: getTitle('en','start_marker_list'),
|
---|
496 | id: "start_marker_list",
|
---|
497 | colnum: 3,
|
---|
498 | events: { change: setArrowFromButton }
|
---|
499 | },{
|
---|
500 | type: "input",
|
---|
501 | panel: "marker_panel",
|
---|
502 | title: "Middle marker",
|
---|
503 | id: "mid_marker",
|
---|
504 | label: "Middle",
|
---|
505 | defval: "",
|
---|
506 | size: 3,
|
---|
507 | events: { change: setMarker }
|
---|
508 | },{
|
---|
509 | type: "button-select",
|
---|
510 | panel: "marker_panel",
|
---|
511 | title: getTitle('en','mid_marker_list'),
|
---|
512 | id: "mid_marker_list",
|
---|
513 | colnum: 3,
|
---|
514 | events: { change: setArrowFromButton }
|
---|
515 | },{
|
---|
516 | type: "input",
|
---|
517 | panel: "marker_panel",
|
---|
518 | title: "End marker",
|
---|
519 | id: "end_marker",
|
---|
520 | label: "End",
|
---|
521 | size: 3,
|
---|
522 | events: { change: setMarker }
|
---|
523 | },{
|
---|
524 | type: "button-select",
|
---|
525 | panel: "marker_panel",
|
---|
526 | title: getTitle('en','end_marker_list'),
|
---|
527 | id: "end_marker_list",
|
---|
528 | colnum: 3,
|
---|
529 | events: { change: setArrowFromButton }
|
---|
530 | } ],
|
---|
531 | callback: function() {
|
---|
532 | $('#marker_panel').addClass('toolset').hide();
|
---|
533 |
|
---|
534 | },
|
---|
535 | addLangData: function(lang) {
|
---|
536 | return { data: lang_list[lang] };
|
---|
537 | },
|
---|
538 |
|
---|
539 | selectedChanged: function(opts) {
|
---|
540 | // Use this to update the current selected elements
|
---|
541 | //console.log('selectChanged',opts);
|
---|
542 | selElems = opts.elems;
|
---|
543 |
|
---|
544 | var i = selElems.length;
|
---|
545 | var marker_elems = ['line','path','polyline','polygon'];
|
---|
546 |
|
---|
547 | while(i--) {
|
---|
548 | var elem = selElems[i];
|
---|
549 | if(elem && $.inArray(elem.tagName, marker_elems) != -1) {
|
---|
550 | if(opts.selectedElement && !opts.multiselected) {
|
---|
551 | showPanel(true);
|
---|
552 | } else {
|
---|
553 | showPanel(false);
|
---|
554 | }
|
---|
555 | } else {
|
---|
556 | showPanel(false);
|
---|
557 | }
|
---|
558 | }
|
---|
559 | },
|
---|
560 |
|
---|
561 | elementChanged: function(opts) {
|
---|
562 | //console.log('elementChanged',opts);
|
---|
563 | var elem = opts.elems[0];
|
---|
564 | if(elem && (
|
---|
565 | elem.getAttribute("marker-start") ||
|
---|
566 | elem.getAttribute("marker-mid") ||
|
---|
567 | elem.getAttribute("marker-end")
|
---|
568 | )) {
|
---|
569 | colorChanged(elem);
|
---|
570 | updateReferences(elem);
|
---|
571 | }
|
---|
572 | changing_flag = false;
|
---|
573 | }
|
---|
574 | };
|
---|
575 | });
|
---|
576 |
|
---|