Grid - Rendering dynamically generated images

Vaadin 6 / 7 / 8 Framework UI
1

Hi,

is it possible to render dynamically generated images in new grid? I cannot use StreamResource in ImageRenderer?
I think SparklineRenderer from Sampler Demo do it. Is the Source Code of SparklineRenderer anywhere?

Thanks for help.

Axel

2

As far as I know, that’s the case that Grid doesn’t yet support StreamResource in ImageRenderer, but I don’t know details for the status of the support, as there’s not even a ticket for it yet. For another way, you probably should be able to use ExternalResources referring to a RequestHandler that generates the images.

The source code for SparklineRenderer is not publicly available currently; I’m not immediately sure why it’s not included in the source view in Sampler. There’s the
Sparklines add-on
 on which the renderer is probably based, but that would require some extra code to use in a Grid.