images and tranparency

rbuser

Using report builder to print high quality images to a 5x7 professional
photo printer. It is working great.

Can make labels transparent but also want to make images transparent so I
can include various boarders.

How can I do this?

Bruce
bruce@brilliantdata.com

nicocizik

Hi Bruce,

Images can be rendered transparent using the Transparent property of the
TppImage component. What type of images are you using?

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Thanks for your quick response

I see the transparent property for the image and have set it to true but is
there a transparent color property (as you have in pplabels)? It seems the
transparent color is white (255,255,255) but I am getting bleed thru on the
colors that are close to white but not pure white. Is it possible that the
transparent colors are a range and not a single color?

Additional point if transparency is a range of colors and not a single color
that is even better for me as long as I can set the transparent color range.
This would allow me to do some green screen functions with the prints.


Thanks

Bruce

nardmoseley

By default TBitmap autodetects the transparent color as the bottom left most
pixel. (TppImage.Picture.Bitmap is of type TBitmap. )

You can take more control over this by setting the TBitmap properties for
TransparentColor and TransparentMode.

See the Delphi help for more details.

If your images are are not bitmaps, RB will convert them to bitmaps prior to
rendering them. To take more control, you could try writing some code to
convert them to bitmaps so you can control the transparent color.



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Nard Moseley
Digital Metaphors
www.digital-metaphors.com