sarpay
5/5/2014 - 9:47 AM

[html5] canvas image draw sample

[html5] canvas image draw sample

canvas_image_draw_sample.html
content_copyfile_download

<!DOCTYPE HTML>
<html>
  <head>
    <style>
      body {
        margin: 0px;
        padding: 0px;
      }
      #myCanvas {
        border: 1px solid #9C9898;
      }
    </style>
    <script>
      window.onload = function() {
        var canvas = document.getElementById("myCanvas");
        var context = canvas.getContext("2d");
        var imageObj = new Image();

        imageObj.onload = function() {
          // draw cropped image
          var sourceX = 200;
          var sourceY = 0;
          var sourceWidth = 150;
          var sourceHeight = 150;
          var destWidth = sourceWidth;
          var destHeight = sourceHeight;
          var destX = canvas.width / 2 - destWidth / 2;
          var destY = canvas.height / 2 - destHeight / 2;

          context.drawImage(imageObj, sourceX, sourceY, sourceWidth, sourceHeight, destX, destY, destWidth, destHeight);
        };
        imageObj.src = "http://www.html5canvastutorials.com/demos/assets/darth-vader.jpg";
      };

    </script>
  </head>
  <body>
    <canvas id="myCanvas" width="150" height="150"></canvas>
  </body>
</html>