Transparent png pictures

Knowledge exchange related to the VPE Report Engine and PDF Library

Moderator: IDEAL Software Support

Transparent png pictures

Postby Bengt » Wed Jan 05, 2022 2:03 pm

Is it possible to use transparent pictures and get the transparency working in VPE. I print one picture with transparent parts over another picture, but the transparent parts get white. I use VPE 7.10 Professional.

/Bengt
Bengt
 
Posts: 85
Joined: Fri Jan 27, 2006 5:29 pm

Re: Transparent png pictures

Postby IDEAL Software Support » Thu Jan 06, 2022 9:12 am

Bitmap transparency and alpha channels are not supported. It would require to assemble each full page with all its content as bitmap internally. Since VPE supports really huge page dimensions, this could break the limits of available memory. It would also make preview and printing slow.
IDEAL Software Support
 
Posts: 1589
Joined: Thu Nov 18, 2004 4:03 pm

Re: Transparent png pictures

Postby Bengt » Thu Jan 06, 2022 7:10 pm

Wouldn't it be possible to have flag for choosing bitmap transparence on each document so only such documents use a lot of memory and slow down printing? It would be an important improvement to be able to print logotypes on pictures and on colored backgrounds like plain text when transparent mode is set.
/Bengt
Bengt
 
Posts: 85
Joined: Fri Jan 27, 2006 5:29 pm

Re: Transparent png pictures

Postby IDEAL Software Support » Fri Jan 07, 2022 11:30 am

The amount of work involved into changing critical parts of VPE would be huge. If your logos are available as vector graphics, you can export them as EMF (Windows Enhanced Metafile) and import them into VPE.
IDEAL Software Support
 
Posts: 1589
Joined: Thu Nov 18, 2004 4:03 pm


Return to VPE Open Forum

Who is online

Users browsing this forum: No registered users and 7 guests

cron