watermarkjs
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Watermarked images in the browser
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<html lang="en">
<head>
<meta charset="utf-8">
<title>watermark.js - using images</title>
<script src="/scripts/watermark.js"></script>
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<link href='http://fonts.googleapis.com/css?family=Josefin+Slab|Maven+Pro' rel='stylesheet' type='text/css'>
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<body>
<div class="container">
<h1 class="text-center"><a href="/">watermark.js</a></h1>
<nav>
<ul>
<li><a href="images.html">images</a></li>
<li class="separator">-</li>
<li><a href="text.html">text</a></li>
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<li><a href="uploading.html">uploading</a></li>
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<li><a href="docs.html">documentation</a></li>
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<div class="col-xs-12">
<p class="lead">
A common use case for watermarking is to lay one image on top of another. The following examples
demonstrate some of the pre-packaged image positioning functions that come with watermark.js.
</p>
<div class="example" id="lower-right">
<h2>Lower Right</h2>
<pre>
<code class="javascript">
watermark(['/img/shepherd.jpg', '/img/logo.png'])
.image(watermark.image.lowerRight(0.5))
.then(function (img) {
document.getElementById('lower-right').appendChild(img);
});
</code>
</pre>
</div>
<div class="example" id="lower-left">
<h2>Lower Left</h2>
<pre>
<code class="javascript">
watermark(['/img/forest.jpg', '/img/logo.png'])
.image(watermark.image.lowerLeft(0.5))
.then(function (img) {
document.getElementById('lower-left').appendChild(img);
});
</code>
</pre>
</div>
<div class="example" id="upper-right">
<h2>Upper Right</h2>
<pre>
<code class="javascript">
watermark(['/img/field.jpg', '/img/logo.png'])
.image(watermark.image.upperRight(0.5))
.then(function (img) {
document.getElementById('upper-right').appendChild(img);
});
</code>
</pre>
</div>
<div class="example" id="upper-left">
<h2>Upper Left</h2>
<pre>
<code class="javascript">
watermark(['/img/wolf.jpg', '/img/logo.png'])
.image(watermark.image.upperLeft(0.5))
.then(function (img) {
document.getElementById('upper-left').appendChild(img);
});
</code>
</pre>
</div>
<div class="example" id="center">
<h2>Center</h2>
<pre>
<code class="javascript">
watermark(['/img/coffee.jpg', '/img/logo.png'])
.image(watermark.image.center(0.5))
.then(function (img) {
document.getElementById('center').appendChild(img);
});
</code>
</pre>
</div>
<div class="example" id="arbitrary">
<h2>Arbitrary Positions</h2>
<pre>
<code class="javascript">
var getX = function(boat, logo) {
return 73;
};
var getY = function(boat, logo) {
return 63;
};
// atPos is the basis for all positioning functions
watermark(['/img/boat.jpg', '/img/logo.png'])
.image(watermark.image.atPos(getX, getY, 0.5))
.then(function (img) {
document.getElementById('arbitrary').appendChild(img);
});
</code>
</pre>
</div>
<div class="example" id="multiple">
<h2>Multiple Watermarks</h2>
<pre>
<code class="javascript">
// using load to draw additional images
watermark(['/img/boat.jpg', '/img/logo.png'])
.image(watermark.image.lowerRight(0.5))
.load(['/img/peridot.png'])
.image(watermark.image.upperLeft(0.5))
.then(function (img) {
document.getElementById('multiple').appendChild(img);
});
</code>
</pre>
</div>
</div>
</div>
<script>
// lower right positioning
watermark(['/img/shepherd.jpg', '/img/logo.png'])
.image(watermark.image.lowerRight(0.5))
.then(function (img) {
var pre = document.querySelector('#lower-right pre');
pre.parentNode.insertBefore(img, pre);
});
// lower left positioning
watermark(['/img/forest.jpg', '/img/logo.png'])
.image(watermark.image.lowerLeft(0.5))
.then(function (img) {
var pre = document.querySelector('#lower-left pre');
pre.parentNode.insertBefore(img, pre);
});
// upper right positioning
watermark(['/img/field.jpg', '/img/logo.png'])
.image(watermark.image.upperRight(0.5))
.then(function (img) {
var pre = document.querySelector('#upper-right pre');
pre.parentNode.insertBefore(img, pre);
});
// upper left positioning
watermark(['/img/wolf.jpg', '/img/logo.png'])
.image(watermark.image.upperLeft(0.5))
.then(function (img) {
var pre = document.querySelector('#upper-left pre');
pre.parentNode.insertBefore(img, pre);
});
// upper left positioning
watermark(['/img/coffee.jpg', '/img/logo.png'])
.image(watermark.image.center(0.5))
.then(function (img) {
var pre = document.querySelector('#center pre');
pre.parentNode.insertBefore(img, pre);
});
// position anywhere
var getX = function(boat, logo) {
return 73;
};
var getY = function(boat, logo) {
return 63;
};
watermark(['/img/boat.jpg', '/img/logo.png'])
.image(watermark.image.atPos(getX, getY, 0.5))
.then(function (img) {
var pre = document.querySelector('#arbitrary pre');
pre.parentNode.insertBefore(img, pre);
});
// multiple images
watermark(['/img/boat.jpg', '/img/logo.png'])
.image(watermark.image.lowerRight(0.5))
.load(['/img/peridot.png'])
.image(watermark.image.upperLeft(0.5))
.then(function (img) {
var pre = document.querySelector('#multiple pre');
pre.parentNode.insertBefore(img, pre);
});
</script>
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