Mercurial > gemma
annotate client/src/lib/mixins.js @ 3807:876dc90c2825 yworks-svg2pdf
client: improve pdf generation
* Add width and height parameters back to calling addDiagram() because
some code still needs it and it is likely to be needed in the future.
author | Bernhard Reiter <bernhard@intevation.de> |
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date | Thu, 04 Jul 2019 11:59:12 +0200 |
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1 /* This is Free Software under GNU Affero General Public License v >= 3.0 |
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2 * without warranty, see README.md and license for details. |
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3 * |
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4 * SPDX-License-Identifier: AGPL-3.0-or-later |
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5 * License-Filename: LICENSES/AGPL-3.0.txt |
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6 * |
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7 * Copyright (C) 2018, 2019 by via donau |
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8 * – Österreichische Wasserstraßen-Gesellschaft mbH |
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9 * Software engineering by Intevation GmbH |
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10 * |
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11 * Author(s): |
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12 * * Markus Kottländer <markus.kottlaender@intevation.de> |
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13 * * Fadi Abbud <fadi.abbud@intevation.de> |
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14 * * Bernhard Reiter <bernhard.reiter@intevation.de> |
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15 */ |
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16 import jsPDF from "jspdf-yworks"; |
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17 import locale2 from "locale2"; |
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18 import { mapState } from "vuex"; |
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19 import { HTTP } from "@/lib/http"; |
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20 |
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21 export const sortTable = { |
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22 data() { |
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23 return { |
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24 sortColumn: "", |
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25 sortDirection: "ASC", |
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26 pageSize: 20, |
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27 page: 1 |
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28 }; |
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29 }, |
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30 methods: { |
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31 sortTable(sorting) { |
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32 this.sortColumn = sorting.sortColumn; |
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33 this.sortDirection = sorting.sortDirection; |
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34 } |
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35 } |
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36 }; |
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37 |
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38 export const diagram = { |
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39 methods: { |
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40 getDimensions({ main, nav }) { |
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41 //dimensions and margins |
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42 const elem = document.querySelector("#" + this.containerId); |
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43 const svgWidth = elem != null ? elem.clientWidth : 0; |
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44 const svgHeight = elem != null ? elem.clientHeight : 0; |
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45 const mainMargin = main || { top: 20, right: 20, bottom: 110, left: 80 }; |
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46 const navMargin = nav || { |
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47 top: svgHeight - mainMargin.top - 65, |
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48 right: 20, |
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49 bottom: 30, |
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50 left: 80 |
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51 }; |
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52 const width = Number(svgWidth) - mainMargin.left - mainMargin.right; |
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53 const mainHeight = Number(svgHeight) - mainMargin.top - mainMargin.bottom; |
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54 const navHeight = Number(svgHeight) - navMargin.top - navMargin.bottom; |
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55 return { width, mainHeight, navHeight, mainMargin, navMargin }; |
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56 } |
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57 } |
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58 }; |
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59 |
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60 export const pane = { |
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61 computed: { |
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62 paneId() { |
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63 return this.$parent.pane.id; |
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64 } |
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65 } |
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66 }; |
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67 |
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68 export const templateLoader = { |
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69 methods: { |
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70 loadTemplates(url) { |
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71 return new Promise((resolve, reject) => { |
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72 HTTP.get(url, { |
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73 headers: { |
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74 "X-Gemma-Auth": localStorage.getItem("token"), |
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75 "Content-type": "text/xml; charset=UTF-8" |
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76 } |
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77 }) |
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78 .then(response => { |
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79 resolve(response); |
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80 }) |
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81 .catch(error => { |
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82 reject(error); |
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83 }); |
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84 }); |
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85 }, |
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86 prepareImages(elements) { |
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87 /** |
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88 * In order to render the images from the template, we need to convert |
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89 * each image to dataURIs. Since this happens asynchronous, |
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90 * we need to wrap each image into its own promise and only after all are |
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91 * finished, we continue with the flow. |
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92 */ |
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93 return new Promise(resolve => { |
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94 const imageElementLoaders = elements.reduce((o, n, i) => { |
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95 if (n.type === "image") { |
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96 o.push( |
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97 new Promise(resolve => { |
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98 const image = new Image(); |
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99 image.onload = function() { |
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100 var canvas = document.createElement("canvas"); |
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101 canvas.width = this.naturalWidth; // or 'width' if you want a special/scaled size |
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102 canvas.height = this.naturalHeight; // or 'height' if you want a special/scaled size |
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103 canvas.getContext("2d").drawImage(this, 0, 0); |
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104 resolve({ |
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105 index: i, |
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106 url: canvas.toDataURL("image/png") |
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107 }); |
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108 }; |
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109 image.src = n.url; |
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110 }) |
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111 ); |
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112 } |
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113 return o; |
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114 }, []); |
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115 Promise.all(imageElementLoaders).then(values => { |
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116 resolve(values); |
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117 }); |
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118 }); |
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119 } |
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120 } |
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121 }; |
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122 |
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123 export const pdfgen = { |
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124 computed: { |
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125 ...mapState("application", ["logoForPDF"]), |
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126 ...mapState("user", ["user"]) |
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127 }, |
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128 methods: { |
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129 gaugeInfo(selectedGauge) { |
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130 // returns string with formatted gauge info |
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131 return ( |
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132 selectedGauge.properties.objname + |
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133 " (" + |
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134 selectedGauge.id |
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135 .split(".")[1] |
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136 .replace(/[()]/g, "") |
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137 .split(",")[3] + |
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138 ")" |
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139 ); |
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140 }, |
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141 generatePDF(params) { |
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142 // creates a new jsPDF object into this.pdf.doc |
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143 // will call functions that the calling context has to provide |
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144 // as specified in the templateData |
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145 let templateData = params["templateData"]; |
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146 let diagramTitle = params["diagramTitle"]; |
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147 |
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148 this.pdf.doc = new jsPDF("l", "mm", templateData.properties.paperSize); |
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149 // pdf width and height in millimeter (landscape) |
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150 if (templateData.properties.paperSize === "a3") { |
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151 this.pdf.width = 420; |
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152 this.pdf.height = 297; |
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153 } else { |
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154 this.pdf.width = 297; |
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155 this.pdf.height = 210; |
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156 } |
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157 // check the template elements |
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158 if (templateData) { |
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159 this.pdf.doc.setFont("linbiolinum", "normal"); |
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160 let defaultFontSize = 11, |
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161 defaultColor = "black", |
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162 defaultWidth = 70, |
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163 defaultTextColor = "black", |
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164 defaultBorderColor = "white", |
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165 defaultBgColor = "white", |
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166 defaultRounding = 2, |
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167 defaultPadding = 2, |
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168 defaultOffset = { x: 0, y: 0 }; |
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169 templateData.elements.forEach(e => { |
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170 switch (e.type) { |
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171 case "diagram": { |
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172 this.addDiagram( |
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173 e.position, |
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174 e.offset || defaultOffset, |
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175 e.width || 200, |
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176 e.height || 100 |
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177 ); |
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178 break; |
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179 } |
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180 case "diagramlegend": { |
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181 this.addDiagramLegend( |
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182 e.position, |
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183 e.offset || defaultOffset, |
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184 e.color || defaultColor |
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185 ); |
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186 break; |
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187 } |
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188 case "diagramtitle": { |
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189 this.addDiagramTitle( |
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190 e.position, |
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191 e.offset || defaultOffset, |
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192 e.fontsize || defaultFontSize, |
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193 e.color || defaultColor, |
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194 diagramTitle |
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195 ); |
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196 break; |
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197 } |
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198 case "text": { |
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199 this.addText( |
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200 e.position, |
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201 e.offset || defaultOffset, |
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202 e.width || defaultWidth, |
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203 e.fontsize || defaultFontSize, |
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204 e.color || defaultTextColor, |
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205 e.text || "" |
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206 ); |
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207 break; |
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208 } |
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209 case "image": { |
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210 this.addImage( |
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211 e.url, |
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212 e.format || "", |
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213 e.position, |
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214 e.offset || defaultOffset, |
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215 e.width || 90, |
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216 e.height || 60 |
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217 ); |
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218 break; |
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219 } |
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220 case "box": { |
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221 this.addBox( |
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222 e.position, |
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223 e.offset || defaultOffset, |
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224 e.width || 90, |
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225 e.height || 60, |
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226 e.rounding === 0 || e.rounding ? e.rounding : defaultRounding, |
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227 e.color || defaultBgColor, |
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228 e.brcolor || defaultBorderColor |
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229 ); |
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230 break; |
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231 } |
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232 case "textbox": { |
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233 this.addTextBox( |
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234 e.position, |
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235 e.offset || defaultOffset, |
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236 e.width, |
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237 e.height, |
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238 e.rounding === 0 || e.rounding ? e.rounding : defaultRounding, |
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239 e.padding || defaultPadding, |
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240 e.fontsize || defaultFontSize, |
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241 e.color || defaultTextColor, |
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242 e.background || defaultBgColor, |
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243 e.text || "", |
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244 e.brcolor || defaultBorderColor |
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245 ); |
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246 break; |
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247 } |
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248 } |
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249 }); |
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250 } |
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251 }, |
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252 // add text at specific coordinates and do line breaks |
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253 addText(position, offset, width, fontSize, color, text) { |
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254 text = this.replacePlaceholders(text); |
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255 // split the incoming string to an array, each element is a string of |
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256 // words in a single line |
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257 this.pdf.doc.setFontStyle("normal"); |
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258 this.pdf.doc.setTextColor(color); |
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259 this.pdf.doc.setFontSize(fontSize); |
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260 var textLines = this.pdf.doc.splitTextToSize(text, width); |
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261 // x/y defaults to offset for topleft corner (normal x/y coordinates) |
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262 let x = offset.x; |
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263 let y = offset.y; |
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264 // if position is on the right, x needs to be calculate with pdf width and |
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265 // the size of the element |
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266 if (["topright", "bottomright"].indexOf(position) !== -1) { |
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267 x = this.pdf.width - offset.x - width; |
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268 } |
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269 if (["bottomright", "bottomleft"].indexOf(position) !== -1) { |
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270 y = this.pdf.height - offset.y - this.getTextHeight(textLines.length); |
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271 } |
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272 this.pdf.doc.text(textLines, x, y, { baseline: "hanging" }); |
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273 }, |
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274 replacePlaceholders(text) { |
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275 if (text.includes("{date}")) { |
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276 text = text.replace("{date}", new Date().toLocaleString(locale2)); |
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277 } |
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278 // get only day,month and year from the Date object |
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279 if (text.includes("{date-minor}")) { |
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280 var date = new Date(); |
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281 var dt = |
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282 (date.getDate() < 10 ? "0" : "") + |
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283 date.getDate() + |
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284 "." + |
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285 (date.getMonth() + 1 < 10 ? "0" : "") + |
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286 (date.getMonth() + 1) + |
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287 "." + |
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288 date.getFullYear(); |
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289 text = text.replace("{date-minor}", dt.toLocaleString(locale2)); |
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290 } |
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291 if (text.includes("{user}")) { |
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292 text = text.replace("{user}", this.user); |
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293 } |
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294 return text; |
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295 }, |
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296 addImage(url, format, position, offset, width, height) { |
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297 let x = offset.x; |
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298 let y = offset.y; |
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299 if (["topright", "bottomright"].indexOf(position) !== -1) { |
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300 x = this.pdf.width - offset.x - width; |
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301 } |
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302 if (["bottomright", "bottomleft"].indexOf(position) !== -1) { |
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303 y = this.pdf.height - offset.y - height; |
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304 } |
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305 let image = new Image(); |
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306 if (url) { |
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307 image.src = url; |
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308 } else { |
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309 if (this.logoForPDF) { |
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310 image.src = this.logoForPDF; |
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311 } else { |
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312 image.src = "/img/gemma-logo-for-pdf.png"; |
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313 } |
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314 } |
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315 if (format === "") { |
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316 let tmp = image.src.split("."); |
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317 format = tmp[tmp.length - 1].toUpperCase(); |
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318 } |
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319 this.pdf.doc.addImage(image, format, x, y, width, height); |
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320 }, |
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321 // add text at specific coordinates with a background box |
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322 addBox(position, offset, width, height, rounding, color, brcolor) { |
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323 // x/y defaults to offset for topleft corner (normal x/y coordinates) |
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324 let x = offset.x; |
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325 let y = offset.y; |
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326 |
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327 // if position is on the right, x needs to be calculate with pdf width and |
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328 // the size of the element |
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329 if (["topright", "bottomright"].indexOf(position) !== -1) { |
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330 x = this.pdf.width - offset.x - width; |
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331 } |
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332 if (["bottomright", "bottomleft"].indexOf(position) !== -1) { |
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333 y = this.pdf.height - offset.y - height; |
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334 } |
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335 this.addRoundedBox(x, y, width, height, color, rounding, brcolor); |
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336 }, |
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337 getTextHeight(numberOfLines) { |
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338 // Return estimated height in mm. |
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339 |
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340 // FontSize is given in desktop publishing points defined as 1/72 inch. |
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341 // aka 25.4 / 72 mm |
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342 let fontSize = this.pdf.doc.getFontSize(); |
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343 let lineHeightFactor = 1.15; // default from jspdf-yworks 2.0.2 |
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344 if (typeof this.pdf.doc.getLineHeightFactor !== "undefined") { |
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345 lineHeightFactor = this.pdf.doc.getLineHeightFactor(); |
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346 } |
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347 return numberOfLines * fontSize * (25.4 / 72) * lineHeightFactor; |
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348 }, |
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349 // title for diagram |
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350 addDiagramTitle(position, offset, size, color, text) { |
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351 let x = offset.x, |
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352 y = offset.y; |
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353 this.pdf.doc.setFontSize(size); |
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354 this.pdf.doc.setFontStyle("bold"); |
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355 this.pdf.doc.setTextColor(color); |
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356 let width = |
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357 (this.pdf.doc.getStringUnitWidth(text) * size) / (72 / 25.6) + size / 2; |
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358 // if position is on the right, x needs to be calculate with pdf width and |
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359 // the size of the element |
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360 if (["topright", "bottomright"].indexOf(position) !== -1) { |
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361 x = this.pdf.width - offset.x - width; |
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362 } |
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363 if (["bottomright", "bottomleft"].indexOf(position) !== -1) { |
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364 y = this.pdf.height - offset.y - this.getTextHeight(1); |
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365 } |
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366 this.pdf.doc.text(text, x, y, { baseline: "hanging" }); |
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367 }, |
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368 addRoundedBox(x, y, w, h, color, rounding, brcolor) { |
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369 this.pdf.doc.setDrawColor(brcolor); |
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370 this.pdf.doc.setFillColor(color); |
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371 this.pdf.doc.roundedRect(x, y, w, h, rounding, rounding, "FD"); |
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client: pdf-gen: add one pdf-template element
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372 }, |
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client: pdf-gen: add one pdf-template element
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373 addTextBox( |
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client: pdf-gen: add one pdf-template element
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374 position, |
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client: pdf-gen: add one pdf-template element
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375 offset, |
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client: pdf-gen: add one pdf-template element
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376 width, |
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377 height, |
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378 rounding, |
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client: pdf-gen: add one pdf-template element
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379 padding, |
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client: pdf-gen: add one pdf-template element
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380 fontSize, |
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381 color, |
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382 background, |
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client: pdf-gen: add one pdf-template element
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383 text, |
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client: pdf-gen: add one pdf-template element
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384 brcolor |
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client: pdf-gen: add one pdf-template element
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385 ) { |
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client: pdf-gen: add one pdf-template element
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386 this.pdf.doc.setFontSize(fontSize); |
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client: pdf-gen: add one pdf-template element
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387 text = this.replacePlaceholders(text); |
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client: pdf-gen: add one pdf-template element
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388 |
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389 if (!width) { |
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390 width = this.pdf.doc.getTextWidth(text) + 2 * padding; |
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client: pdf-gen: add one pdf-template element
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391 } |
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392 let textWidth = width - 2 * padding; |
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client: pdf-gen: add one pdf-template element
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393 if (!height) { |
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client: pdf-gen: add one pdf-template element
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394 let textLines = this.pdf.doc.splitTextToSize(text, textWidth); |
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client: pdf-gen: add one pdf-template element
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395 height = this.getTextHeight(textLines.length) + 2 * padding; |
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client: pdf-gen: add one pdf-template element
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396 } |
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client: pdf-gen: add one pdf-template element
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397 this.addBox( |
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client: pdf-gen: add one pdf-template element
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398 position, |
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client: pdf-gen: add one pdf-template element
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399 offset, |
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client: pdf-gen: add one pdf-template element
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400 width, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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401 height, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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402 rounding, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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403 background, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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404 brcolor |
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client: pdf-gen: add one pdf-template element
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405 ); |
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client: pdf-gen: add one pdf-template element
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406 this.addText( |
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client: pdf-gen: add one pdf-template element
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407 position, |
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client: pdf-gen: add one pdf-template element
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408 { x: offset.x + padding, y: offset.y + padding }, |
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client: pdf-gen: add one pdf-template element
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409 textWidth, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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410 fontSize, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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411 color, |
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client: pdf-gen: add one pdf-template element
Fadi Abbud <fadi.abbud@intevation.de>
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412 text |
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client: pdf-gen: add one pdf-template element
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413 ); |
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client: pdf-gen: prepare pdf template for waterlevel diagram
Fadi Abbud <fadi.abbud@intevation.de>
parents:
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414 } |
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client: pdf-gen: prepare pdf template for waterlevel diagram
Fadi Abbud <fadi.abbud@intevation.de>
parents:
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415 } |
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416 }; |