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Line 2 : "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Line 3 : <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
Line 4 : <head>
Line 5 : <title>Mobilefish.com - 1/2 note stem down HTML 5 canvas example</title>
Line 6 :
Line 7 : <!--
Line 8 : Music symbol 1/2 note stem down v. 1.0
Line 9 : Author: Robert Lie
Line 10 : www.mobilefish.com
Line 11 :
Line 12 : This file is public domain. You can use it for any purpose without restriction.
Line 13 : I do not guarantee that it is correct, so use it at your own risk.
Line 14 : If you use it for something interesting, I'd appreciate hearing about it.
Line 15 : If you find any bugs or make any improvements, I'd appreciate hearing about those too.
Line 16 : It would also be nice if my name and URL were left in the comments. But none of that is required.
Line 17 :
Line 18 : Requires: File excanvas.compiled.js
Line 19 : HTML5 Canvas for Internet Explorer
Line 20 : See: http://code.google.com/p/explorercanvas/
Line 21 : -->
Line 22 :
Line 23 : <!--[if IE]>
Line 24 : <script type="text/javascript" src="scripts/excanvas.compiled.js"></script>
Line 25 : <![endif]-->
Line 26 : <script type="text/javascript">
Line 27 :
Line 28 :
Line 29 : function drawShape(){
Line 30 : var canvas = document.getElementById('cssxCoordinates');
Line 31 : if (canvas.getContext){
Line 32 : var ctx = canvas.getContext('2d');
Line 33 :
Line 34 : var x = 11;
Line 35 : var y = 75;
Line 36 :
Line 37 : drawNote2(ctx,x,y);
Line 38 :
Line 39 : } else {
Line 40 : alert('You need Firefox 1.5+, Google Chrome 8.0+, Internet Explorer 8.0+ or Safari 4.0+ to see the example.');
Line 41 : }
Line 42 : }
Line 43 :
Line 44 : function drawNote2(ctx,x,y){
Line 45 : drawNoteHeadOpen(ctx,x,y);
Line 46 : drawNoteStem(ctx,x,y);
Line 47 : }
Line 48 :
Line 49 : function drawNoteHeadOpen(ctx,x,y){
Line 50 :
Line 51 : var x_offset_head = 12;
Line 52 : var y_center_head = 74;
Line 53 :
Line 54 : var x_corner = x - x_offset_head;
Line 55 : var y_corner = y - y_center_head;
Line 56 :
Line 57 : ctx.save();
Line 58 :
Line 59 : ctx.translate(x_corner,y_corner);
Line 60 :
Line 61 : ctx.beginPath();
Line 62 : ctx.moveTo(13,86);
Line 63 : ctx.quadraticCurveTo(13,118,42,126);
Line 64 : ctx.quadraticCurveTo(67,129,101,108);
Line 65 : ctx.quadraticCurveTo(136,85,142,57);
Line 66 : ctx.quadraticCurveTo(142,28,112,19);
Line 67 : ctx.quadraticCurveTo(88,16,54,36);
Line 68 : ctx.quadraticCurveTo(19,59,13,86);
Line 69 : ctx.fill();
Line 70 :
Line 71 : ctx.fillStyle = "white";
Line 72 : ctx.beginPath();
Line 73 : ctx.moveTo(20,97);
Line 74 : ctx.quadraticCurveTo(23,110,34,116);
Line 75 : ctx.quadraticCurveTo(51,115,73,100);
Line 76 : ctx.quadraticCurveTo(90,91,108,78);
Line 77 : ctx.quadraticCurveTo(132,60,135,47);
Line 78 : ctx.quadraticCurveTo(133,34,121,30);
Line 79 : ctx.quadraticCurveTo(104,31,83,44);
Line 80 : ctx.quadraticCurveTo(65,54,50,66);
Line 81 : ctx.quadraticCurveTo(26,84,20,97);
Line 82 : ctx.fill();
Line 83 :
Line 84 : ctx.restore();
Line 85 : }
Line 86 :
Line 87 : function drawNoteStem(ctx,x,y){
Line 88 :
Line 89 : var stem_height = 338;
Line 90 : var x_delta_stem = 12;
Line 91 :
Line 92 : var y_delta_stem = 36;
Line 93 :
Line 94 : var x_offset_stem = 138;
Line 95 : var y_offset_stem = 360;
Line 96 :
Line 97 : var x_corner = x + x_delta_stem - x_offset_stem;
Line 98 : var y_corner = y + y_delta_stem + stem_height - y_offset_stem;
Line 99 :
Line 100 : ctx.save();
Line 101 :
Line 102 : ctx.translate(x_corner,y_corner);
Line 103 :
Line 104 : ctx.fillStyle = "black";
Line 105 : ctx.beginPath();
Line 106 : ctx.moveTo(127,4);
Line 107 : ctx.lineTo(135,4);
Line 108 : ctx.lineTo(135,342);
Line 109 : ctx.lineTo(127,342);
Line 110 : ctx.fill();
Line 111 :
Line 112 : ctx.restore();
Line 113 : }
Line 114 :
Line 115 : </script>
Line 116 : </head>
Line 117 : <body onload="drawShape();">
Line 118 : <h1>1/2 note stem down</h1>
Line 119 : <canvas id="cssxCoordinates" width="150" height="435"></canvas>
Line 120 : </body>
Line 121 : </html>