Created
June 29, 2014 19:43
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Why doesn't the image in this example scale to fill the canvas?
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| <html> | |
| <head> | |
| <title>Canvas Lab</title> | |
| <style> | |
| body { | |
| background-color: whitesmoke; | |
| } | |
| .divPage { | |
| margin-top: 125px; | |
| width: 800px; | |
| margin-left: auto; margin-right: auto; | |
| } | |
| .cardCanvas { | |
| width: 800px; | |
| height: 500px; | |
| border: 1px solid gainsboro; | |
| } | |
| </style> | |
| <script> | |
| function setupCanvas (urlImg) { | |
| var c = document.getElementById ("idCardCanvas"); | |
| var ctx = c.getContext ("2d"); | |
| var img = new Image (); | |
| img.onload = function () { | |
| ctx.drawImage (img, 0, 0, img.width, img.height, 0, 0, 800, 500) | |
| }; | |
| img.src = urlImg; | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <div class="divPage"> | |
| <canvas class="cardCanvas" id="idCardCanvas"> | |
| </canvas> | |
| </div> | |
| <script> | |
| setupCanvas ("http://static.scripting.com/larryKing/images/2014/04/30/nashville.jpg"); | |
| </script> | |
| </body> | |
| </html> |
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Add this after line 24:
var canvas = document.getElementById('idCardCanvas');
canvas.width = 800;
canvas.height = 500;