Re: Parsing module resource image to Java Awt Image

[Colin Bartolome]

I had a similar issue in an earlier discussion, "What's the best way to handle embedding an image as a resource in a module?" I was able to work around the issue by skipping Ceylon's resource code for now and relying on Java's resource code:

value resource = javaClassFromInstance(game.board).getResourceAsStream(name);

if (exists resource) {
    return ImageIO.read(resource);
}

Ceylon's resource code doesn't currently let you get at the raw bytes or stream, I think, and the URI when running on the JVM starts with "classpath:/", which needs some special handling.

On Friday, February 3, 2017 at 9:09:14 AM UTC-8, Wojciech Potiopa wrote:

Hello, i am trying to do the thing as in title. I put image resource image in resource resource/com/module/name/image.png. It is on class path.
i do the:

 assert (exists image = `module`.resourceByPath("image.png"));

I convert it to ceylon.URI

and then im stuck
I have tried using ImageIO to convert java.File into Image but it fils

value imageUri = URI(image.uri);
value file = File(imageUri.path);
file.setReadable(true);
value read = ImageIO.read(file);

It fails with

java.lang.RuntimeException: javax.imageio.IIOException: Can't read input file

Then i tried to use  it as a ceylon.File readBytes and so on
but it fails on assertation

assert(is File file=parsePath(imageUri.path).resource.linkedResource);

It is Nill instance and not the ceylon.File.

i made a simple test if text file will be parsed from this location and it is.

assert (exists text= `module`.resourceByPath("test.txt"));
String textContent = text.textContent();
assert(textContent=="asdasdasdasdad");

How should i handle this ?

[Tako Schotanus]

Colin's suggestion is indeed the best way for now.

We need and want a way to support access to raw binary data natively from Ceylon of course but we haven't decided yet what that API would look like exactly.

-Tako

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