108 lines
2.6 KiB
HTML
108 lines
2.6 KiB
HTML
<html>
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<head>
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<title>Simple pdf.js page viewer</title>
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<script type="text/javascript"
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src="pdf.js"></script>
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<style type"text/css">
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body {
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margin: 6px;
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padding: 0px;
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background-color: #c0bdb7;
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}
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#viewer {
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margin: auto;
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border: 1px solid black;
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width: 8.5in;
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height: 11in;
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}
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#pageNumber {
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text-align: right;
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}
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</style>
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<script type="text/javascript">
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var canvas, numPages, pageDisplay, pageNum;
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function load() {
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canvas = document.getElementById("canvas");
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canvas.mozOpaque = true;
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pageDisplay = document.getElementById("pageNumber");
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timeDisplay = document.getElementById("time");
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req = new XMLHttpRequest();
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req.open("GET", "uncompressed.tracemonkey-pldi-09.pdf");
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req.mozResponseType = req.responseType = "arraybuffer";
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req.expected = (document.URL.indexOf("file:") == 0) ? 0 : 200;
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req.onreadystatechange = xhrstate;
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req.send(null);
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}
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function xhrstate() {
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if (req.readyState == 4 && req.status == req.expected) {
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var data = req.mozResponseArrayBuffer ||
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req.mozResponse ||
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req.responseArrayBuffer ||
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req.response;
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pdf = new PDFDoc(new Stream(data));
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numPages = pdf.numPages;
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displayPage(1);
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}
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}
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function displayPage(num) {
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pageDisplay.value = num;
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var t0 = Date.now();
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var page = pdf.getPage(pageNum = num);
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var t1 = Date.now();
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var ctx = canvas.getContext("2d");
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ctx.save();
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ctx.fillStyle = "rgb(255, 255, 255)";
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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ctx.restore();
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var gfx = new CanvasGraphics(ctx);
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page.display(gfx);
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var t2 = Date.now();
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timeDisplay.innerHTML = (t1 - t0) + "/" + (t2 - t1) + " ms";
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}
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function nextPage() {
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if (pageNum < numPages)
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++pageNum;
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displayPage(pageNum);
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}
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function prevPage() {
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if (pageNum > 1)
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--pageNum;
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displayPage(pageNum);
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}
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function gotoPage(num) {
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if (0 <= num && num <= numPages)
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pageNum = num;
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displayPage(pageNum);
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}
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</script>
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</head>
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<body onload="load();">
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<div>
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<button onclick="prevPage();">Previous</button>
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<button onclick="nextPage();">Next</button>
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<input type="text" id="pageNumber" onchange="gotoPage(this.value);"
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value="1" size="5"></input>
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Time to render: <span id="time"></span>
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<div id="viewer">
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<!-- Canvas dimensions must be specified in CSS pixels. CSS pixels
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-- are always 96 dpi. These dimensions are 8.5x11in at 96dpi. -->
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<canvas id="canvas" width="816" height="1056"></canvas>
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</div>
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</body>
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</html>
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