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<!doctype html>
<html>
<head>
<title>canvas.js | basics (2)</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript" src="../../pattern/canvas.js"></script>
<style>
/* Minimal CSS for <div class="widgets">.
* This <div> is automatically generated,
* you can inspect it with the browser developer tools.
*/
.widgets { }
.widget {
margin-bottom: 2px;
display: block;
}
.widget .label {
display: inline-block;
text-align: right;
margin-right: 10px;
width: 80px;
}
.widget input,
.widget select {
width: 125px;
}
.widget input[type="checkbox"] {
width: auto;
}
</style>
</head>
<body>
<script type="text/canvas">
function setup(canvas) {
canvas.size(500, 250);
// Attach widgets to the canvas.
// The available types are STRING, NUMBER, LIST, BOOLEAN, RANGE and FUNCTION.
widget(canvas, "text", STRING, {value: "hi!"});
widget(canvas, "size", NUMBER, {value: 100});
widget(canvas, "font", LIST, {value: ["sans-serif", "serif", "monospace"], index:1}); // XXX index not documented
widget(canvas, "bold", BOOLEAN, {value: true});
widget(canvas, "alpha", RANGE, {value: 0.8, min: 0.0, max: 1.0, step: 0.1});
widget(canvas, "reset", FUNCTION, {
callback: function(event) {
event.target.canvas.stop();
event.target.canvas.run();
}
});
}
function draw(canvas) {
// The current value for each widget can be retrieved from canvas.variables.
canvas.clear();
text(canvas.variables.text, 100, 150, {
font: canvas.variables.font,
fontsize: canvas.variables.size,
fontweight: canvas.variables.bold? BOLD : NORMAL,
fill: new Color(0,0,0, canvas.variables.alpha)
});
}
</script>
</body>
</html>
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