The client side call to the controller, the controller needs to create animation gif and send it back to the client side (HTML page) by a string of base64 or byte array, when the client side gets the base64 he should display it into a canvas.
Now the problem is that the canvas display only the first frame of the animation gif like a static image.
I don't want to save the image on the disc just to display it on the client side canvas.
*Note that when I save the image from server side on my disc its save it as gif and display all frames together like I wish, something wrong when I transfer it to client side, maybe somthing with encode/decode the gif animated ?
*I use ImageMagick to create the animated gif.
Here is my client side code:
Code: Select all
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8" />
<link href="Content/bootstrap.min.css" rel="stylesheet" />
</head>
<body style="padding-top: 20px;">
<div class="col-md-10 col-md-offset-1">
<div class="well">
<!---->
<canvas id="canvasImage" width="564" height="120">
<p>We apologize, your browser does not support canvas at this time!</p>
</canvas>
<!---->
</div>
</div>
<script src="Scripts/jquery-1.10.2.min.js"></script>
<script src="Scripts/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$.ajax({
url: '/api/EngineProccess',
method: 'GET',
success: function (data) {
var imageObj = new Image();
var canvas = document.getElementById("canvasImage");
var context = canvas.getContext('2d');
var image = new Image();
image.onload = function () {
context.drawImage(image, 0, 0);
};
console.log(data);
image.src = "data:image/gif;base64," + data;
},
error: function (jqXHR) {
$('#divErrorText').text(jqXHR.responseText);
$('#divError').show('fade');
}
});
});
</script>
</body>
</html>
and here is the server code:
Code: Select all
public class EngineProccessController : ApiController
{
// GET api/EngineProccess
public String Get()
{
using (MagickImageCollection collection = new MagickImageCollection())
{
// Add first image and set the animation delay to 100ms
collection.Add("Snakeware1.gif");
collection[0].AnimationDelay = 100;
// Add second image, set the animation delay to 100ms and flip the image
collection.Add("Snakeware2.gif");
collection[1].AnimationDelay = 100;
collection[1].Flip();
// Optionally reduce colors
QuantizeSettings settings = new QuantizeSettings();
settings.Colors = 256;
collection.Quantize(settings);
// Optionally optimize the images (images should have the same size).
collection.Optimize();
// Save gif
//collection.Write("D://Test01//Test01//Animated.gif");
string data = collection.ToBase64();
return data;
}
}
}
Regards, Jr.Rafa
