png transparency not supported?

[ChristiaanK]

Hi,

I tried to use the alternate image feature with a png file. It works, but where the background of the images seems to be transparent when viewed in my browser, it has an ugly black background in EA. Did I do something wrong, or is it EA? I use 7.1 enterprise.

Christiaan

[Oliver F.]

Here is the answer:

I use 7.1 enterprise.
Christiaan

I believe it has been fixed in 7.5 though I never checked that. Shame on me- I had filed that bug to Sparx (amongst others, propably).

Oliver

[ChristiaanK]

I just installed a trial of 7.5 and it works exactly the same as in 7.1. So transparency for png's is still not supported. That's bad.

From the example.eap I can see that it seems to be supported for wmf files. However, image converters that can save to wmf seem to be scarce. Anyone a good idea?

Christiaan

[Makulik]

Hi,

I am actually using .emf for embedded images, which seems to work better than .wmf (I think transparency works for both formats).

Regarding image converters, I don't know, GIMP doesn't seem to support it (but I just checked my Linux version, may be the Windows version is able to do).
Usually I am drawing my images using OpenOffice Draw, which allows to save .emf.

HTH
Günther

[Eve]

I wouldn't expect gimp to support it.  wmf/emf are a vector based format and gimp is a bitmap based editor.

[bonzo5]

I use Gimp to remove the ugly black background from PNG images, and it works very well.

[ChristiaanK]

Thanks for all the tips. I go with Günther: I tested OpenOffice Draw (3.1), and you cannot only save your whole image in EMF or WMF, but also a selection. So to convert a png:
- open the png in OO Draw
- select it in the drawing
- file | export | EMF / WMF
- check 'Selection'

Only the very subtle shadow in my original png goes black. I can live with that.

Nevertheless, Sparx, can you solve this issue and please not make me buy an upgrade for it?