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get size of dynamic image

mas_h

Hi,

Is there any way to know the dimension (width, height) of an image which is read
from a database table of type BLOB. Based in this information I would like to set
the required width and height in the report.
I'm using BIRT 2.2 (because of user requirement, so need to go back in time.. ;-( )

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Comments

mwilliams

Hmmm. I don't know that you'll be able to get that info. I think the info you can grab from BIRT is the height/width you have set for the image element. I don't know that the actual image data can be looked at. I'll take a look using the BLOB image data from the sample database in 2.2.2 and see what I can come up with.

mwilliams

Got this from a colleague. Try it in your image onCreate():<br />
<br />
<pre class='_prettyXprint _lang-auto _linenums:0'>
importPackage(Packages.javax.imageio);
importPackage(Packages.java.io);
var decodedBytes = this.data;
bais = new ByteArrayInputStream( decodedBytes);
bufimg = ImageIO.read(bais);
this.setHeight(bufimg.getHeight() +"px");
this.setWidth(bufimg.getWidth() +"px");
</pre>

mas_h

Hi Michael,

This piece of code helps me to solve the problem. Thanks a lot!