Here is a part from a servlet I use to scale pictures:
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException
{
...
String angleStr = request.getParameter("angle");
...
// scale the image
ParameterBlock parameterBlock = new ParameterBlock();
parameterBlock.addSource(convertedImage);
parameterBlock.add(scale);
parameterBlock.add(scale);
parameterBlock.add(0.0f);
parameterBlock.add(0.0f);
parameterBlock.add(new InterpolationNearest());
PlanarImage scaledImage = JAI.create("scale", parameterBlock);
// create a jpeg stream
ByteArrayOutputStream byteArrayOutputStream = new
ByteArrayOutputStream();
JAI.create("encode", scaledImage, byteArrayOutputStream, "jpeg");
ServletOutputStream servletOutputStream = response
.getOutputStream();
servletOutputStream.write(byteArrayOutputStream.toByteArray());
On the client side use the GWT image method 'setUrl' to pass the
parameters to te servlet (angle in the example).
Maybe I've misunderstood, but this istn't really a GWT problem.
I hope this helps
Holger
--
You received this message because you are subscribed to the Google Groups
"Google Web Toolkit" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-web-toolkit?hl=en.
