pdfjs-dist/worker.js

"use strict";

function log() {
    var args = Array.prototype.slice.call(arguments);
    postMessage("log");
    postMessage(JSON.stringify(args))
}

var console = {
    log: log
}

importScripts("canvas_proxy.js");
importScripts("pdf.js");
importScripts("fonts.js");
importScripts("glyphlist.js")

// var array = new Uint8Array(2);
// array[0] = 1;
// array[1] = 300;
// postMessage(array);

var timer = null;
function tic() {
    timer = Date.now();
}

function toc(msg) {
    log("Took ", (Date.now() - timer));
    timer = null;
}


var canvas = new CanvasProxy(1224, 1584);
// canvas.moveTo(0, 10);
// canvas.lineTo(0, 20);
// canvas.lineTo(500, 500);
// canvas.flush();
// canvas.stroke();
// canvas.flush();
log("test");

var pageInterval;
onmessage = function(event) {
    var data = event.data;
    var pdfDocument = new PDFDoc(new Stream(data));
    var numPages = pdfDocument.numPages;

    tic();
    // Let's try to render the first page...
    var page = pdfDocument.getPage(8);

    // page.compile will collect all fonts for us, once we have loaded them
    // we can trigger the actual page rendering with page.display
    var fonts = [];

    var gfx = new CanvasGraphics(canvas);
    page.compile(gfx, fonts);
    toc("compiled page");

    //
    var fontsReady = true;
    // Inspect fonts and translate the missing one
    var count = fonts.length;
    for (var i = 0; i < count; i++) {
      var font = fonts[i];
      if (Fonts[font.name]) {
        fontsReady = fontsReady && !Fonts[font.name].loading;
        continue;
      }

      new Font(font.name, font.file, font.properties);
      fontsReady = false;
    }

    // function delayLoadFont() {
    //   for (var i = 0; i < count; i++) {
    //     if (Fonts[font.name].loading)
    //       return;
    //   }
    //   clearInterval(pageInterval);
    //   page.display(gfx);
    //
    //   log("flush");
    //   canvas.flush();
    // };

    // if (fontsReady) {
    //   delayLoadFont();
    // } else {
    //   pageInterval = setInterval(delayLoadFont, 10);
    // }

    page.display(gfx);
    canvas.flush();
}

// function open(url) {
//     var req = new XMLHttpRequest();
//     req.open("GET", url);
//     // req.responseType = "arraybuffer";
//     req.expected = 0;//(document.URL.indexOf("file:") == 0) ? 0 : 200;
//     req.onreadystatechange = function() {
//       postMessage("loaded");
//       if (req.readyState == 4 && req.status == req.expected) {
//         var data = req.mozResponseArrayBuffer || req.mozResponse ||
//                    req.responseArrayBuffer || req.response;
//         pdfDocument = new PDFDoc(new Stream(data));
//         numPages = pdfDocument.numPages;
//         // document.getElementById("numPages").innerHTML = numPages.toString();
//         // goToPage(pageNum);
//       }
//     };
//     req.send(null);
// }
//
// open("compressed.tracemonkey-pldi-09.pdf")