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annotate client/src/components/Pdftool.vue @ 1878:f030182f82f1 dev-pdf-generation

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client: fix style warning for pdfexport
author Bernhard Reiter <bernhard@intevation.de>
date Tue, 15 Jan 2019 09:54:46 +0100
parents e53924abb4a2
children 9a2fbeaabd52
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1878
f030182f82f1 client: fix style warning for pdfexport
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1 <template>
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2 <div
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3 :class="[
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4 'box ui-element rounded bg-white text-nowrap',
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5 { expanded: showPdfTool }
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6 ]"
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7 >
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8 <div style="width: 20rem">
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9 <h6 class="mb-0 py-2 px-3 border-bottom d-flex align-items-center">
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10 <font-awesome-icon icon="file-pdf" class="mr-2"></font-awesome-icon>
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11 <translate>Generate PDF</translate>
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12 <font-awesome-icon
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13 icon="times"
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14 class="ml-auto text-muted"
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15 @click="$store.commit('application/showPdfTool', false)"
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16 ></font-awesome-icon>
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17 </h6>
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18 <div class="p-3">
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19 <b><translate>Choose format:</translate></b>
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20 <select v-model="form.format" class="form-control d-block w-100">
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21 <option value="landscape"><translate>landscape</translate></option>
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22 <option value="portrait"><translate>portrait</translate></option>
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23 </select>
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24 <select v-model="form.paperSize" class="form-control d-block w-100">
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25 <option value="a3"><translate>ISO A3</translate></option>
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26 <option value="a4"><translate>ISO A4</translate></option>
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27 </select>
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28 <small class="d-block my-2">
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29 <input
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30 type="radio"
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31 id="pdfexport-downloadtype-download"
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32 value="download"
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33 v-model="form.downloadType"
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34 selected
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35 />
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36 <label for="pdfexport-downloadtype-download" class="ml-1 mr-2">
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37 <translate>Download</translate>
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38 </label>
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39 <input
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40 type="radio"
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41 id="pdfexport-downloadtype-open"
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42 value="open"
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43 v-model="form.downloadType"
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44 />
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45 <label for="pdfexport-downloadtype-open" class="ml-1">
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46 <translate>Open in new window</translate>
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47 </label>
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48 </small>
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49 <button
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50 @click="download"
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51 type="button"
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52 class="btn btn-sm btn-info d-block w-100"
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53 >
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54 <translate>Generate PDF</translate>
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55 </button>
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56 </div>
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57 </div>
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58 </div>
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59 </template>
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60
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61 <script>
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62 /* This is Free Software under GNU Affero General Public License v >= 3.0
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63 * without warranty, see README.md and license for details.
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64 *
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65 * SPDX-License-Identifier: AGPL-3.0-or-later
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66 * License-Filename: LICENSES/AGPL-3.0.txt
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67 *
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68 * Copyright (C) 2018, 2019 by via donau
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69 * – Österreichische Wasserstraßen-Gesellschaft mbH
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70 * Software engineering by Intevation GmbH
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71 *
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72 * Author(s):
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73 * * Markus Kottländer <markus.kottlaender@intevation.de>
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74 * * Bernhard E. Reiter <bernhard@intevation.de>
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75 * * Fadi Abbud <fadi.abbud@intevation.de>
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76 */
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77 import { mapState } from "vuex";
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78 import jsPDF from "jspdf";
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79
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80 var paperSizes = {
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81 // in millimeter, landscape [width, height]
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82 a3: [420, 297],
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83 a4: [297, 210]
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84 };
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85
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86 export default {
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87 name: "pdftool",
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88 data() {
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89 return {
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90 form: {
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91 format: "landscape",
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92 paperSize: "a4",
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93 downloadType: "download"
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94 }
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95 };
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96 },
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97 computed: {
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98 ...mapState("map", ["openLayersMap"]),
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99 ...mapState("application", ["showPdfTool"]),
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100 ...mapState("bottlenecks", ["selectedSurvey"])
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101 },
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102 methods: {
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103 download() {
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104 // FUTURE: disable button while working on it
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105 console.log(
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106 "will generate pdf with",
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107 this.form.paperSize,
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108 this.form.format
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109 );
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110 var width, height;
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111 // generate PDF and open it
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112 if (this.form.format !== "portrait") {
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113 // landscape, default
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114 width = paperSizes[this.form.paperSize][0];
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115 height = paperSizes[this.form.paperSize][1];
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116 } else {
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117 // switch width and height
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118 width = paperSizes[this.form.paperSize][1];
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119 height = paperSizes[this.form.paperSize][0];
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120 }
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121
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122 let resolution = 120; // Dots per inch. An inch is 25.4 mm.
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123
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124 // FUTURE: consider margins
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125 console.log(width, height);
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126
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127 var map = this.openLayersMap;
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128 var mapSize = map.getSize(); // size in pixels of the map in the DOM
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129 // Calculate the extent for the current view state and the passed size.
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130 // The size is the pixel dimensions of the box into which the calculated
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131 // extent should fit.
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132 var mapExtent = map.getView().calculateExtent(mapSize);
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133 var pdf = new jsPDF(this.form.format, "mm", this.form.paperSize);
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134 var self = this;
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135 var scalebarSize =
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136 self.form.format === "portrait" && self.form.paperSize === "a4"
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137 ? 10
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138 : 15;
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139 var northarrowSize = 3;
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140 // set a callback for after the next complete rendering of the map
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141 map.once("rendercomplete", function(event) {
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142 let canvas = event.context.canvas;
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143 console.log("rendered", canvas);
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144 var data = canvas.toDataURL("image/png");
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145 pdf.addImage(data, "PNG", 0, 0, width, height);
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146 self.addScalebar(
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147 pdf,
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148 width - scalebarSize * 5,
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149 height - scalebarSize / 2,
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150 scalebarSize
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151 );
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152 //self.addText(pdf, 150, 20, 10, "black", 70, "some text");
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153 self.addNorthArrow(pdf, 15, 8, northarrowSize);
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154 pdf.save("map.pdf");
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155 // reset to original size
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156 map.setSize(mapSize);
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157 map.getView().fit(mapExtent, { size: mapSize });
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158
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159 // FUTURE: re-enable button when done
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160 });
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161
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162 // trigger rendering
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163 var mapSizeForPrint = [
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164 Math.round((width * resolution) / 25.4),
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165 Math.round((height * resolution) / 25.4)
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166 ];
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167 map.setSize(mapSizeForPrint);
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168 map.getView().fit(mapExtent, { size: mapSizeForPrint });
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169
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170 // TODO: replace this src with an API reponse after actually generating PDFs
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171 /*
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172 let src =
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173 this.form.format === "landscape"
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174 ? "/img/PrintTemplate-Var2-Landscape.pdf"
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175 : "/img/PrintTemplate-Var2-Portrait.pdf";
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176
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177 let a = document.createElement("a");
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178 a.href = src;
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179
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180 if (this.form.downloadType === "download")
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181 a.download = src.substr(src.lastIndexOf("/") + 1);
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182 else a.target = "_blank";
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183
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184 document.body.appendChild(a);
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185 a.click();
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186 document.body.removeChild(a);
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187 */
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188 },
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189
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190 addScalebar(doc, x, y, size) {
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Fadi Abbud <fadi.abbud@intevation.de>
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191 doc.setDrawColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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192 doc.setFillColor(255, 255, 255);
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193 doc.roundedRect(x - size / 2, y - size / 2, size * 5, size, 3, 3, "FD");
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194 doc.setDrawColor(0, 0, 0);
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Fadi Abbud <fadi.abbud@intevation.de>
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195 doc.setFillColor(0, 0, 0);
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Fadi Abbud <fadi.abbud@intevation.de>
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196 doc.rect(x, y, size, 1, "FD");
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197 doc.setFillColor(255, 255, 255);
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198 doc.setDrawColor(0, 0, 0);
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199 doc.rect(x + size, y, size, 1, "FD");
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200 doc.setFillColor(0, 0, 0);
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201 doc.setDrawColor(0, 0, 0);
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Fadi Abbud <fadi.abbud@intevation.de>
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202 doc.rect(x + size * 2, y, size * 2, 1, "FD");
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203 doc.setFontSize(5);
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Fadi Abbud <fadi.abbud@intevation.de>
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204 doc.text(x, y + 3, "0");
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205 doc.text(x + size, y + 3, "50");
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206 doc.text(x + size * 2, y + 3, "100");
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207 doc.text(x + size * 4, y + 3, "200 m");
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208 },
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Fadi Abbud <fadi.abbud@intevation.de>
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209
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Fadi Abbud <fadi.abbud@intevation.de>
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210 addNorthArrow(doc, x1, y1, size) {
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211 var y2 = y1 + size * 3;
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212 var x3 = x1 - size * 2;
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213 var y3 = y1 + size * 5;
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214 var x4 = x1 + size * 2;
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215 //white triangle
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216 doc.setFillColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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217 doc.setDrawColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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218 doc.triangle(x3 - 0.8, y3 + 1.2, x1, y1 - 1.2, x1, y2 + 0.6, "F");
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219 doc.triangle(x1, y1 - 1.2, x1, y2 + 0.6, x4 + 0.8, y3 + 1.2, "F");
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220 //north arrow
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Fadi Abbud <fadi.abbud@intevation.de>
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221 doc.setDrawColor(0, 0, 0);
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Fadi Abbud <fadi.abbud@intevation.de>
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222 doc.setFillColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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223 doc.triangle(x3, y3, x1, y1, x1, y2, "FD");
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Fadi Abbud <fadi.abbud@intevation.de>
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224 doc.setFillColor(0, 0, 0);
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225 doc.triangle(x1, y1, x1, y2, x4, y3, "FD");
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Fadi Abbud <fadi.abbud@intevation.de>
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226 doc.setFontSize(size * 3.1);
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Fadi Abbud <fadi.abbud@intevation.de>
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227 doc.setTextColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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228 doc.setFontStyle("bold");
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229 doc.text(size < 3 ? x1 - 0.5 : x1 - 1.3, y3 + 1, "N");
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230 doc.setFontSize(size * 3);
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Fadi Abbud <fadi.abbud@intevation.de>
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231 doc.setTextColor(0, 0, 0);
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232 doc.setFontStyle("normal");
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233 doc.text(size < 3 ? x1 - 0.5 : x1 - 1.3, y3 + 1, "N");
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Fadi Abbud <fadi.abbud@intevation.de>
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234 },
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Fadi Abbud <fadi.abbud@intevation.de>
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235
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236 //export an image to PDF
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237 addImage(doc, img, type, x, y, width, hight) {
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238 doc.addImage(img, type, x, y, width, hight);
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239 },
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Fadi Abbud <fadi.abbud@intevation.de>
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240
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241 // add some text at specific coordinates and determine how many wrolds in single line
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242 addText(doc, postitionX, positionY, size, color, lineWidth, text) {
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243 // split the incoming string to an array, each element is a string of words in a single line
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244 var textLines = doc.splitTextToSize(text, lineWidth);
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Fadi Abbud <fadi.abbud@intevation.de>
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245 // get the longest line to fit the white backround to it
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246 var longestString = "";
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247 textLines.forEach(function(element) {
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248 if (element.length > longestString.length) longestString = element;
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Fadi Abbud <fadi.abbud@intevation.de>
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249 });
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Fadi Abbud <fadi.abbud@intevation.de>
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250 var indexOfMaxString = textLines.indexOf(longestString);
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Fadi Abbud <fadi.abbud@intevation.de>
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251 // white background (rectangular) around the text
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Fadi Abbud <fadi.abbud@intevation.de>
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252 doc.setFillColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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253 doc.setDrawColor(255, 255, 255);
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Fadi Abbud <fadi.abbud@intevation.de>
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254 doc.rect(
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Fadi Abbud <fadi.abbud@intevation.de>
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255 postitionX - doc.getStringUnitWidth(textLines[indexOfMaxString]) / size,
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256 size > 10 ? positionY - size / 1.8 : positionY - size / 2.4,
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257 doc.getStringUnitWidth(textLines[indexOfMaxString]) * (size / 2.6),
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258 textLines.length * (size / 2),
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Fadi Abbud <fadi.abbud@intevation.de>
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259 "FD"
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260 );
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Fadi Abbud <fadi.abbud@intevation.de>
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261 //rounded rectangular
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Fadi Abbud <fadi.abbud@intevation.de>
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262 /* doc.roundedRect(
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263 postitionX - doc.getStringUnitWidth(textLines[indexOfMaxString]) / size,
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264 size > 10 ? positionY - size / 1.8 : positionY - size / 2.6,
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265 doc.getStringUnitWidth(textLines[indexOfMaxString]) * (size / 2.6),
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266 textLines.length * (size / 2),
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Fadi Abbud <fadi.abbud@intevation.de>
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267 3,
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Fadi Abbud <fadi.abbud@intevation.de>
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268 3,
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269 "FD"
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270 ); */
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271 doc.setTextColor(color);
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Fadi Abbud <fadi.abbud@intevation.de>
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272 doc.setFontSize(size);
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273 doc.text(postitionX, positionY, textLines);
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274 }
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275 }
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276 };
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277 </script>