Take a look at the wiki: http://wiki.apache.org/tapestry/Tapestry5HowToCreateASimpleGraphComponent
Since you aren't actually going to be injecting the image bytes into the page your images are going to be loaded in a second request. You can create an action link that actually returns the image bytes. Deciding whether to create the image in the page render request, or in the action request is up to you. A challenge with doing it in the page render request is where to hold the bytes until the next request comes in (that could be a lot of data to hold in the session). Otherwise you can store the data used to generate the image, which also might be a lot of data... Josh On Tue, Apr 15, 2008 at 3:03 AM, Sven Homburg <[EMAIL PROTECTED]> wrote: > i developed an component that genereates thumbnails of an gif/jpeg > via Toolkit graphic methodes. > > after that the converted stream should injected into the page. > > 2008/4/15, Josh Canfield <[EMAIL PROTECTED]>: > > > > > Why are you generating a binary stream during the render phase? > > > > > > On Mon, Apr 14, 2008 at 3:55 PM, Sven Homburg <[EMAIL PROTECTED]> > > wrote: > > > but how do i return a binary stream, that generated at render phase. > > > > > > > > > 2008/3/17, Josh Canfield <[EMAIL PROTECTED]>: > > > > > > > > > > > You need to return a StreamResponse > > > > > > > > > > > > > > http://tapestry.apache.org/tapestry5/apidocs/org/apache/tapestry/StreamResponse.html > > > > > > > > Also, check out the following for an example. > > > > > > > > > > http://wiki.apache.org/tapestry/Tapestry5HowToStreamAnExistingBinaryFile > > > > Josh > > > > > > > > > > > > On Sat, Mar 15, 2008 at 8:11 AM, Dmitry Shyshkin <[EMAIL PROTECTED] > > > > > > > wrote: > > > > > Hello, all > > > > > > > > > > I want to generate image by tapestry page. Follow code successfully > > set > > > > > Content-Type and output image data, but after that exception is > > thrown > > > > : > > > > > java.lang.RuntimeException: Page resource/Image did not generate any > > > > > markup when rendered. This could be because its template file could > > not > > > > > be located, or because a render phase method in the page prevented > > > > > rendering. > > > > > > > > > > Is there is a way to tell tapestry that page output is binary and > > > > > ResposeWriter won't be used for generation? I've thought about > > > > > StreamResponse but it accepted only from action events, not from > > render > > > > > phase events. > > > > > > > > > > @Inject > > > > > private Response _response; > > > > > > > > > > @BeginRender > > > > > void render() throws IOException { > > > > > Image image = ...; > > > > > IOUtil.transfer(image.getImage().getBinaryStream(), > > > > > _response.getOutputStream(image.getContentType())); > > > > > } > > > > > > > > > > > > > > > Thanks, > > > > > Dmitry > > > > > > > > > > > > > > > > > --------------------------------------------------------------------- > > > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > -- > > > > TheDailyTube.com. Sign up and get the best new videos on the internet > > > > delivered fresh to your inbox. > > > > > > > > > > > > --------------------------------------------------------------------- > > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > > > > -- > > > with regards > > > Sven Homburg > > > http://tapestry5-components.googlecode.com > > > > > > > > > > > > > -- > > > > -- > > TheDailyTube.com. Sign up and get the best new videos on the internet > > delivered fresh to your inbox. > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > -- > with regards > Sven Homburg > http://tapestry5-components.googlecode.com > -- -- TheDailyTube.com. Sign up and get the best new videos on the internet delivered fresh to your inbox. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
