I've just fallen in love in peity...

2 files changed, 225 insertions, 0 deletions

diff --git a/js/jquery.peity.js b/js/jquery.peity.js
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+++ b/js/jquery.peity.js
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+// Peity jQuery plugin version 0.6.0
+// (c) 2011 Ben Pickles
+//
+// http://benpickles.github.com/peity/
+//
+// Released under MIT license.
+(function($, document) {
+  var peity = $.fn.peity = function(type, options) {
+    if (document.createElement("canvas").getContext) {
+      this.each(function() {
+        $(this).change(function() {
+          var opts = $.extend({}, options)
+          var self = this
+
+          $.each(opts, function(name, value) {
+            if ($.isFunction(value)) opts[name] = value.call(self)
+          })
+
+          var value = $(this).html();
+          peity.graphers[type].call(this, $.extend({}, peity.defaults[type], opts));
+          $(this).trigger("chart:changed", value);
+        }).trigger("change");
+      });
+    }
+
+    return this;
+  };
+
+  peity.graphers = {};
+  peity.defaults = {};
+
+  peity.add = function(type, defaults, grapher){
+    peity.graphers[type] = grapher;
+    peity.defaults[type] = defaults;
+  };
+
+  var devicePixelRatio = window.devicePixelRatio || 1
+
+  function createCanvas(width, height) {
+    var canvas = document.createElement("canvas")
+    canvas.setAttribute("width", width * devicePixelRatio)
+    canvas.setAttribute("height", height * devicePixelRatio)
+
+    if (devicePixelRatio != 1) {
+      var style = "width:" + width + "px;height:" + height + "px"
+      canvas.setAttribute("style", style)
+    }
+
+    return canvas
+  }
+
+  peity.add(
+    'pie',
+    {
+      colours: ['#FFF4DD', '#FF9900'],
+      delimeter: '/',
+      diameter: 16
+    },
+    function(opts) {
+      var $this = $(this)
+      var values = $this.text().split(opts.delimeter)
+      var v1 = parseFloat(values[0]);
+      var v2 = parseFloat(values[1]);
+      var adjust = -Math.PI / 2;
+      var slice = (v1 / v2) * Math.PI * 2;
+
+      var canvas = createCanvas(opts.diameter, opts.diameter)
+      var context = canvas.getContext("2d");
+      var centre = canvas.width / 2;
+
+      // Plate.
+      context.beginPath();
+      context.moveTo(centre, centre);
+      context.arc(centre, centre, centre, slice + adjust, (slice == 0) ? Math.PI * 2 : adjust, false);
+      context.fillStyle = opts.colours[0];
+      context.fill();
+
+      // Slice of pie.
+      context.beginPath();
+      context.moveTo(centre, centre);
+      context.arc(centre, centre, centre, adjust, slice + adjust, false);
+      context.fillStyle = opts.colours[1];
+      context.fill();
+
+      $this.wrapInner($("<span>").hide()).append(canvas)
+  });
+
+  peity.add(
+    "line",
+    {
+      colour: "#c6d9fd",
+      strokeColour: "#4d89f9",
+      strokeWidth: 1,
+      delimeter: ",",
+      height: 16,
+      max: null,
+      min: 0,
+      width: 32
+    },
+    function(opts) {
+      var $this = $(this)
+      var canvas = createCanvas(opts.width, opts.height)
+      var values = $this.text().split(opts.delimeter)
+      if (values.length == 1) values.push(values[0])
+      var max = Math.max.apply(Math, values.concat([opts.max]));
+      var min = Math.min.apply(Math, values.concat([opts.min]))
+
+      var context = canvas.getContext("2d");
+      var width = canvas.width
+      var height = canvas.height
+      var xQuotient = width / (values.length - 1)
+      var yQuotient = height / (max - min)
+
+      var coords = [];
+      var i;
+
+      context.beginPath();
+      context.moveTo(0, height + (min * yQuotient))
+
+      for (i = 0; i < values.length; i++) {
+        var x = i * xQuotient
+        var y = height - (yQuotient * (values[i] - min))
+
+        coords.push({ x: x, y: y });
+        context.lineTo(x, y);
+      }
+
+      context.lineTo(width, height + (min * yQuotient))
+      context.fillStyle = opts.colour;
+      context.fill();
+
+      if (opts.strokeWidth) {
+        context.beginPath();
+        context.moveTo(0, coords[0].y);
+        for (i = 0; i < coords.length; i++) {
+          context.lineTo(coords[i].x, coords[i].y);
+        }
+        context.lineWidth = opts.strokeWidth * devicePixelRatio;
+        context.strokeStyle = opts.strokeColour;
+        context.stroke();
+      }
+
+      $this.wrapInner($("<span>").hide()).append(canvas)
+    }
+  );
+
+  peity.add(
+    'bar',
+    {
+      colour: "#4D89F9",
+      delimeter: ",",
+      height: 16,
+      max: null,
+      min: 0,
+      width: 32
+    },
+    function(opts) {
+      var $this = $(this)
+      var values = $this.text().split(opts.delimeter)
+      var max = Math.max.apply(Math, values.concat([opts.max]));
+      var min = Math.min.apply(Math, values.concat([opts.min]))
+
+      var canvas = createCanvas(opts.width, opts.height)
+      var context = canvas.getContext("2d");
+
+      var width = canvas.width
+      var height = canvas.height
+      var yQuotient = height / (max - min)
+      var space = devicePixelRatio / 2
+      var xQuotient = (width + space) / values.length
+
+      context.fillStyle = opts.colour;
+
+      for (var i = 0; i < values.length; i++) {
+        var x = i * xQuotient
+        var y = height - (yQuotient * (values[i] - min))
+
+        context.fillRect(x, y, xQuotient - space, yQuotient * values[i])
+      }
+
+      $this.wrapInner($("<span>").hide()).append(canvas)
+    }
+  );
+})(jQuery, document);
diff --git a/peity.html b/peity.html
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+++ b/peity.html
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+<html>
+  <head>
+    <title></title>
+    <meta content="">
+    <link href="css/bootstrap.css" rel="stylesheet">
+    <script src="js/jquery-1.8.0.min.js"></script>
+    <script src="js/jquery.peity.js"></script>
+  </head>
+  <body>
+  <div class="container well-large">
+  		<div class="span6 offset3 well">
+			<h1>Hello, Peity!</h1>
+			<p>That's pretty amazing. It's so simple and looks so nice... and it is easy to use, can be used
+			just anywhere. I like the design and charts... how could I not fall in love in 
+			<a href="http://benpickles.github.com/peity/#pie-charts">peity?</a></p>
+			<h2>Pie charts!</h2>
+			<span class="pie">1/5</span>
+			<span class="pie">226/360</span>
+			<span class="pie">0.52/1.561</span>
+			<h2>Line charts!</h2>
+			<span class="line">1,1,1,6,2,2,7,3,5,15</span>
+			<span class="line">5,3,2,-1,-3,-2,2,3,5,2</span>
+			<span class="line">0,-3,-6,-4,-5,-4,-7,-3,-5,-2</span>
+			<h2>Bar charts!</h2>
+			<span class="bar">5,3,9,6,5,9,7,3,5,2</span>
+			<span class="bar">5,3,2,-1,-3,-2,2,3,5,2</span>
+			<span class="bar">0,-3,-6,-4,-5,-4,-7,-3,-5,-2</span>
+			<h2>What next?</h2>
+			<p>Actually, I don't know. Probably I'll just use it anywhere possible.
+			So simple and lovely <3</p>
+		</div>
+</div>
+
+
+<script type="text/javascript" >
+$("span.pie").peity("pie");
+$("span.line").peity("line");
+$(".bar").peity("bar");
+</script>  
+  </body>
+</html>
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