ecomp-sdk-app/src/main/webapp/app/policyApp/libs/jspdf/jspdf.js

   1 /**
   2  * jsPDF
   3  * (c) 2009 James Hall
   4  *
   5  * Some parts based on FPDF.
   6  */
   7
   8 var jsPDF = function(){
   9
  10         // Private properties
  11         var version = '20090504';
  12         var buffer = '';
  13
  14         var pdfVersion = '1.3'; // PDF Version
  15         var defaultPageFormat = 'a4';
  16         var pageFormats = { // Size in mm of various paper formats
  17                 'a3': [841.89, 1190.55],
  18                 'a4': [595.28, 841.89],
  19                 'a5': [420.94, 595.28],
  20                 'letter': [612, 792],
  21                 'legal': [612, 1008]
  22         };
  23         var textColor = '0 g';
  24         var page = 0;
  25         var objectNumber = 2; // 'n' Current object number
  26         var state = 0; // Current document state
  27         var pages = new Array();
  28         var offsets = new Array(); // List of offsets
  29         var lineWidth = 0.200025; // 2mm
  30         var pageHeight;
  31         var k; // Scale factor
  32         var unit = 'mm'; // Default to mm for units
  33         var fontNumber; // TODO: This is temp, replace with real font handling
  34         var documentProperties = {};
  35         var fontSize = 16; // Default font size
  36         var pageFontSize = 16;
  37
  38         // Initilisation
  39         if (unit == 'pt') {
  40                 k = 1;
  41         } else if(unit == 'mm') {
  42                 k = 72/25.4;
  43         } else if(unit == 'cm') {
  44                 k = 72/2.54;
  45         } else if(unit == 'in') {
  46                 k = 72;
  47         }
  48
  49         // Private functions
  50         var newObject = function() {
  51                 //Begin a new object
  52                 objectNumber ++;
  53                 offsets[objectNumber] = buffer.length;
  54                 out(objectNumber + ' 0 obj');
  55         }
  56
  57
  58         var putHeader = function() {
  59                 out('%PDF-' + pdfVersion);
  60         }
  61
  62         var putPages = function() {
  63
  64                 // TODO: Fix, hardcoded to a4 portrait
  65                 var wPt = pageWidth * k;
  66                 var hPt = pageHeight * k;
  67
  68                 for(n=1; n <= page; n++) {
  69                         newObject();
  70                         out('<</Type /Page');
  71                         out('/Parent 1 0 R');
  72                         out('/Resources 2 0 R');
  73                         out('/Contents ' + (objectNumber + 1) + ' 0 R>>');
  74                         out('endobj');
  75
  76                         //Page content
  77                         p = pages[n];
  78                         newObject();
  79                         out('<</Length ' + p.length  + '>>');
  80                         putStream(p);
  81                         out('endobj');
  82                 }
  83                 offsets[1] = buffer.length;
  84                 out('1 0 obj');
  85                 out('<</Type /Pages');
  86                 var kids='/Kids [';
  87                 for (i = 0; i < page; i++) {
  88                         kids += (3 + 2 * i) + ' 0 R ';
  89                 }
  90                 out(kids + ']');
  91                 out('/Count ' + page);
  92                 out(sprintf('/MediaBox [0 0 %.2f %.2f]', wPt, hPt));
  93                 out('>>');
  94                 out('endobj');
  95         }
  96
  97         var putStream = function(str) {
  98                 out('stream');
  99                 out(str);
 100                 out('endstream');
 101         }
 102
 103         var putResources = function() {
 104                 putFonts();
 105                 putImages();
 106
 107                 //Resource dictionary
 108                 offsets[2] = buffer.length;
 109                 out('2 0 obj');
 110                 out('<<');
 111                 putResourceDictionary();
 112                 out('>>');
 113                 out('endobj');
 114         }
 115
 116         var putFonts = function() {
 117                 // TODO: Only supports core font hardcoded to Helvetica
 118                 newObject();
 119                 fontNumber = objectNumber;
 120                 name = 'Helvetica';
 121                 out('<</Type /Font');
 122                 out('/BaseFont /' + name);
 123                 out('/Subtype /Type1');
 124                 out('/Encoding /WinAnsiEncoding');
 125                 out('>>');
 126                 out('endobj');
 127         }
 128
 129         var putImages = function() {
 130                 // TODO
 131         }
 132
 133         var putResourceDictionary = function() {
 134                 out('/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');
 135                 out('/Font <<');
 136                 // Do this for each font, the '1' bit is the index of the font
 137         // fontNumber is currently the object number related to 'putFonts'
 138                 out('/F1 ' + fontNumber + ' 0 R');
 139                 out('>>');
 140                 out('/XObject <<');
 141                 putXobjectDict();
 142                 out('>>');
 143         }
 144
 145         var putXobjectDict = function() {
 146                 // TODO
 147                 // Loop through images
 148         }
 149
 150
 151         var putInfo = function() {
 152                 out('/Producer (jsPDF ' + version + ')');
 153                 if(documentProperties.title != undefined) {
 154                         out('/Title (' + pdfEscape(documentProperties.title) + ')');
 155                 }
 156                 if(documentProperties.subject != undefined) {
 157                         out('/Subject (' + pdfEscape(documentProperties.subject) + ')');
 158                 }
 159                 if(documentProperties.author != undefined) {
 160                         out('/Author (' + pdfEscape(documentProperties.author) + ')');
 161                 }
 162                 if(documentProperties.keywords != undefined) {
 163                         out('/Keywords (' + pdfEscape(documentProperties.keywords) + ')');
 164                 }
 165                 if(documentProperties.creator != undefined) {
 166                         out('/Creator (' + pdfEscape(documentProperties.creator) + ')');
 167                 }
 168                 var created = new Date();
 169                 var year = created.getFullYear();
 170                 var month = (created.getMonth() + 1);
 171                 var day = created.getDate();
 172                 var hour = created.getHours();
 173                 var minute = created.getMinutes();
 174                 var second = created.getSeconds();
 175                 out('/CreationDate (D:' + sprintf('%02d%02d%02d%02d%02d%02d', year, month, day, hour, minute, second) + ')');
 176         }
 177
 178         var putCatalog = function () {
 179                 out('/Type /Catalog');
 180                 out('/Pages 1 0 R');
 181                 // TODO: Add zoom and layout modes
 182                 out('/OpenAction [3 0 R /FitH null]');
 183                 out('/PageLayout /OneColumn');
 184         }
 185
 186         function putTrailer() {
 187                 out('/Size ' + (objectNumber + 1));
 188                 out('/Root ' + objectNumber + ' 0 R');
 189                 out('/Info ' + (objectNumber - 1) + ' 0 R');
 190         }
 191
 192         var endDocument = function() {
 193                 state = 1;
 194                 putHeader();
 195                 putPages();
 196
 197                 putResources();
 198                 //Info
 199                 newObject();
 200                 out('<<');
 201                 putInfo();
 202                 out('>>');
 203                 out('endobj');
 204
 205                 //Catalog
 206                 newObject();
 207                 out('<<');
 208                 putCatalog();
 209                 out('>>');
 210                 out('endobj');
 211
 212                 //Cross-ref
 213                 var o = buffer.length;
 214                 out('xref');
 215                 out('0 ' + (objectNumber + 1));
 216                 out('0000000000 65535 f ');
 217                 for (var i=1; i <= objectNumber; i++) {
 218                         out(sprintf('%010d 00000 n ', offsets[i]));
 219                 }
 220                 //Trailer
 221                 out('trailer');
 222                 out('<<');
 223                 putTrailer();
 224                 out('>>');
 225                 out('startxref');
 226                 out(o);
 227                 out('%%EOF');
 228                 state = 3;
 229         }
 230
 231         var beginPage = function() {
 232                 page ++;
 233                 // Do dimension stuff
 234                 state = 2;
 235                 pages[page] = '';
 236
 237                 // TODO: Hardcoded at A4 and portrait
 238                 pageHeight = pageFormats['a4'][1] / k;
 239                 pageWidth = pageFormats['a4'][0] / k;
 240         }
 241
 242         var out = function(string) {
 243                 if(state == 2) {
 244                         pages[page] += string + '\n';
 245                 } else {
 246                         buffer += string + '\n';
 247                 }
 248         }
 249
 250         var _addPage = function() {
 251                 beginPage();
 252                 // Set line width
 253                 out(sprintf('%.2f w', (lineWidth * k)));
 254
 255                 // Set font - TODO
 256                 // 16 is the font size
 257                 pageFontSize = fontSize;
 258                 out('BT /F1 ' + parseInt(fontSize) + '.00 Tf ET');
 259         }
 260
 261         // Add the first page automatically
 262         _addPage();
 263
 264         // Escape text
 265         var pdfEscape = function(text) {
 266                 return text.replace(/\\/g, '\\\\').replace(/\(/g, '\\(').replace(/\)/g, '\\)');
 267         }
 268
 269         return {
 270                 addPage: function() {
 271                         _addPage();
 272                 },
 273                 text: function(x, y, text) {
 274                         // need page height
 275                         if(pageFontSize != fontSize) {
 276                                 out('BT /F1 ' + parseInt(fontSize) + '.00 Tf ET');
 277                                 pageFontSize = fontSize;
 278                         }
 279                         var str = sprintf('BT %.2f %.2f Td (%s) Tj ET', x * k, (pageHeight - y) * k, pdfEscape(text));
 280                         out(str);
 281                 },
 282                 setProperties: function(properties) {
 283                         documentProperties = properties;
 284                 },
 285                 addImage: function(imageData, format, x, y, w, h) {
 286
 287                 },
 288                 output: function(type, options) {
 289                         endDocument();
 290                         if(type == undefined) {
 291                                 return buffer;
 292                         }
 293                         if(type == 'datauri') {
 294                                 document.location.href = 'data:application/pdf;base64,' + Base64.encode(buffer);
 295                         }
 296                         // @TODO: Add different output options
 297                 },
 298                 setFontSize: function(size) {
 299                         fontSize = size;
 300                 }
 301         }
 302
 303 };