Lesson: lesson-pdfreactor-multicol-with-dual-sidenotes

This example shows a two-column layout with side notes place in the left and right margin. The side note functionality is implemented using Javascript.

PDF files

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Stylesheet

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@import url("../styles/a4.css");
@page {
    margin-left: 6cm;
    margin-right: 6cm;
}

.anchor {
    font-weight: bold;
}

.annotation {
    font-size: 0.8em;
    font-weight: 100;
    width: 3cm;
    border: 1px solid blue;
    position: absolute;
}

.annotation.right {
    right: 0;
    margin-right: -5cm;
}

.annotation.left {
    left: 0;
    margin-left: -5cm;
}

.columns {
    column-count: 2;
}

HTML input

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<html>
<head>
    <link rel="stylesheet" href="styles.css" type="text/css" />

	<script type="text/javascript">

	function annotations() {
        var columnContainers = document.querySelectorAll(".columns");

		for (var i = 0; i < columnContainers.length; i++) {
			var columnContainer = columnContainers[i];
			var annotations = document.querySelectorAll(".annotation");
			var columnContainerRect = ro.layout.getBoxDescriptions(columnContainer)[0].marginRect;
			var columnContainerWidth = columnContainerRect.width;
			var columnContainerLeft = columnContainerRect.left

			for (var j = 0; j < annotations.length; j++) {
				var annotation = annotations[j];
				var boxDescription = ro.layout.getBoxDescriptions(annotation)[0];
				var left = boxDescription.marginRect.left;

				// check if in a left or right column
				if (left < columnContainerLeft + columnContainerWidth / 2) {
					annotation.className += " left";
				} else {
					annotation.className += " right";
				}
			}
		}
	}
	</script>	
</head>

<body onload="annotations()">


    <div class="columns">
<!--lorem-->
<p>Libero. Integer euismod lacinia velit. Donec velit justo, sodales varius,
cursus sed, mattis a, arcu.</p>

<p>Maecenas accumsan, sem iaculis egestas gravida, odio nunc aliquet dui, eget
cursus diam purus vel augue. Donec eros nisi, imperdiet quis, volutpat ac,
sollicitudin sed, arcu. Aenean vel mauris. Mauris tincidunt. Nullam euismod
odio at velit. Praesent elit purus, porttitor id, facilisis in, consequat ut,
libero. Morbi imperdiet, magna quis ullamcorper malesuada, mi massa pharetra
lectus, a pellentesque urna urna id turpis. Nam posuere lectus vitae nibh.
    <span class="anchor">Anchor</span>
    <span class="annotation">This is a small annotation</span>
Etiam tortor orci, sagittis malesuada, rhoncus quis, hendrerit eget, libero.
Quisque commodo nulla at nunc. Mauris consequat, enim vitae venenatis
sollicitudin, dolor orci bibendum enim, a sagittis nulla nunc quis elit.
Phasellus augue. Nunc suscipit, magna tincidunt lacinia faucibus, lacus tellus
ornare purus, a pulvinar lacus orci eget nibh. Maecenas sed nibh non lacus
tempor faucibus. In hac habitasse platea dictumst. Vivamus a orci at nulla
tristique condimentum. Donec arcu quam, dictum accumsan, convallis accumsan,
cursus sit amet, ipsum. In pharetra sagittis nunc.</p>

<p>Donec consequat mi. Quisque vitae dolor. Integer lobortis. Maecenas id
nulla. Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Sed volutpat
felis vitae dui. Vestibulum et est ac ligula dapibus elementum. Nunc suscipit
    <span class="anchor">Anchor</span>
    <span class="annotation">This is a small annotation</span>
nisl eu felis. Duis nec tortor. Nullam diam libero, semper id, consequat in,
consectetuer ut, metus. Phasellus dui purus, vehicula sed, venenatis a, rutrum
at, nunc. Pellentesque interdum sapien nec neque.</p>

<p>Vivamus sagittis, sem sit amet porttitor lobortis, turpis sapien consequat
orci, sed commodo nulla pede eget sem. Phasellus sollicitudin. Proin orci erat,
blandit ut, molestie sed, fringilla non, odio. Nulla porta, tortor non suscipit
    <span class="anchor">Anchor</span>
    <span class="annotation">This is a small annotation</span>
gravida, velit enim aliquam quam, nec condimentum orci augue vel magna. Nulla
facilisi. Donec ipsum enim, congue in, tempus id, pulvinar sagittis, leo. Donec
et elit in nunc blandit auctor. Nulla congue urna quis lorem. Nam rhoncus pede
sed nunc. Etiam vitae quam. Fusce feugiat pede vel quam. In et augue.</p>

<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</p>

<p>Phasellus mollis dictum nulla. Integer vitae neque vitae eros fringilla
rutrum. Vestibulum in pede adipiscing mi dapibus condimentum. Etiam felis
risus, condimentum in, malesuada eget, pretium ut, sapien. Suspendisse placerat
lectus venenatis lorem. Sed accumsan aliquam enim. Etiam hendrerit, metus eu
semper rutrum, nisl elit pharetra purus, non interdum nibh enim eget augue. Sed
    <span class="anchor">Anchor</span>
    <span class="annotation">This is a small annotation</span>
mauris. Nam varius odio a sapien. Aenean rutrum dictum sapien. Fusce pharetra
elementum ligula. Nunc eu mi non augue iaculis facilisis. Morbi interdum. Donec
nisi arcu, rhoncus ac, vestibulum ut.</p>
<!--/lorem-->



    </div>

</body>
</html>