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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Letters by Adam Schwartz</title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<link rel="icon" href="/favicon.ico">
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<header>
<h1>Letters</h1>
<h2>By Adam Schwartz</h2>
</header>
<section>
<h3>Basic usage</h3>
<div class="canvas-wrapper">
<canvas id="exampleBasic" width="250" height="250"></canvas>
<button for="exampleBasic">Click to run</button>
</div>
<br>
<pre><code>Letters.draw(canvas, 1000)</code></pre>
<script>
document.querySelector('button[for="exampleBasic"]').addEventListener('click', function(){
exampleBasic.className = 'has-letters-drawn';
this.className = 'has-been-clicked-once';
Letters.draw(exampleBasic, 1000)
});
</script>
</section>
<section>
<h3>Drawing custom letters</h3>
<div class="canvas-wrapper">
<canvas id="exampleCustomText" width="250" height="250"></canvas>
<button for="exampleCustomText">Click to run</button>
</div>
<br>
<pre><code>Letters.draw(canvas, 1000, { letter: function() {
return Math.random() > .5 ? '★' : '→'
}})</code></pre>
<script>
document.querySelector('button[for="exampleCustomText"]').addEventListener('click', function(){
exampleCustomText.className = 'has-letters-drawn';
this.className = 'has-been-clicked-once';
Letters.draw(exampleCustomText, 1000, { letter: function() {
return Math.random() > .5 ? '★' : '→'
}})
});
</script>
</section>
<section>
<h3>Drawing in color</h3>
<div class="canvas-wrapper">
<canvas id="exampleCustomColors" width="250" height="250"></canvas>
<button for="exampleCustomColors">Click to run</button>
</div>
<br>
<pre><code>Letters.draw(canvas, 1000, { color: function(){
return 'rgb(' + Math.floor(255 * Math.random()) + ', 0, 0)'
}})</code></pre>
<script>
document.querySelector('button[for="exampleCustomColors"]').addEventListener('click', function(){
exampleCustomColors.className = 'has-letters-drawn';
this.className = 'has-been-clicked-once';
Letters.draw(exampleCustomColors, 1000, { color: function(){
return 'rgb(' + Math.floor(255 * Math.random()) + ', 0, 0)'
}})
});
</script>
</section>
<section>
<h3>Animate drawing</h3>
<div class="canvas-wrapper">
<canvas id="exampleAnimated" width="250" height="250"></canvas>
<button for="exampleAnimated">Click to run</button>
</div>
<br>
<pre><code>runs = 0;
interval = setInterval(function(){
Letters.draw(canvas, 1);
runs += 1;
if (runs > 500) {
clearInterval(interval)
}
})</code></pre>
<script>
(function(){
var interval;
document.querySelector('button[for="exampleAnimated"]').addEventListener('click', function(){
exampleAnimated.className = 'has-letters-drawn';
this.className = 'has-been-clicked-once';
exampleAnimated.getContext('2d').clearRect(0, 0, exampleAnimated.width, exampleAnimated.height);
var runs = 0;
clearInterval(interval);
interval = setInterval(function(){
Letters.draw(exampleAnimated, 1);
runs += 1;
if (runs > 500) {
clearInterval(interval)
}
})
});
})();
</script>
</section>
<section class="desktop-only">
<h3>Drawing around objects</h3>
<div class="canvas-wrapper">
<canvas id="exampleCustom" width="550" height="100"></canvas>
<button for="exampleCustom">Click to run<br>(Takes a few seconds)</button>
</div>
<br>
<pre><code>text = 'LETTERS';
context.fillStyle = '#fff';
context.globalCompositeOperation = 'source-over';
context.fillRect(0, 0, canvas.width, canvas.height);
context.globalCompositeOperation = 'destination-out';
fontSize = 100;
context.font = 'bold ' + fontSize + 'px/normal "Gill Sans"';
context.textBaseline = 'top';
context.fillText(text,
(canvas.width - context.measureText(text).width) / 2,
(canvas.height - (fontSize * 1.17)) / 2
);
context.fillStyle = '#000';
context.globalCompositeOperation = 'source-over';
Letters.draw(canvas, 50000, { letter: function() {
return text[Math.floor(Math.random() * text.length)]
}})</code></pre>
<script>
document.querySelector('button[for="exampleCustom"]').addEventListener('click', function(){
exampleCustom.className = 'has-letters-drawn';
this.className = 'has-been-clicked-once';
exampleCustom.getContext('2d').clearRect(0, 0, exampleAnimated.width, exampleAnimated.height);
var context, fontSize, text;
text = 'LETTERS';
context = exampleCustom.getContext('2d');
fontSize = 100;
context.fillStyle = '#fff';
context.globalCompositeOperation = 'source-over';
context.fillRect(0, 0, exampleCustom.width, exampleCustom.height);
context.globalCompositeOperation = 'destination-out';
context.font = 'bold ' + fontSize + 'px/normal "Gill Sans"';
context.textBaseline = 'top';
context.fillText(text,
(exampleCustom.width - context.measureText(text).width) / 2,
(exampleCustom.height - (fontSize * 1.17)) / 2
);
context.fillStyle = '#000';
context.globalCompositeOperation = 'source-over';
Letters.draw(exampleCustom, 50000, { letter: function() {
return text[Math.floor(Math.random() * text.length)]
}})
});
</script>
</section>
<footer>
<p><a class="button" href="http://github.com/adamschwartz/letters">Star on GitHub →</a></p>
<p><a href="http://twitter.com/adamfschwartz">@adamfschwartz</a></p>
</footer>
<script>
if (window.devicePixelRatio) {
Array.prototype.forEach.call(document.getElementsByTagName('canvas'), function(canvas){
var width, height;
width = canvas.width;
height = canvas.height;
canvas.width = width * window.devicePixelRatio;
canvas.height = height * window.devicePixelRatio;
canvas.style.width = width + 'px';
canvas.style.height = height + 'px'
});
}
</script>
<script src="letters.js"></script>
</body>
</html>