Yes! As of Glitterboo version 1.1, you now have the option to preserve full transparency from uploaded images.
This currently only works for animation downloads at the moment.
If the original file is a .GIF or .PNG, and has fully transparent areas, then these areas will also be transparent in the
downloaded animation. Note that transparent areas will appear as black in the main preview window, however you can click
on to the animation preview where the transparent area is shown as a checkerboard pattern background:
(Teddy Bear clipart courtesy of DailyClipArt.net)
You can also turn off transparency in the downloaded animation by selecting "None" in the "Trans." dropdown box.
The transparent areas of the image will then come out as black. If no transparency was detected in the
uploaded image, then this dropdown box will not be displayed.
PNG files with alpha channel opacity can also be uploaded, but only the areas in the image that are completely transparent will come out
as transparent in the animation (this is because animated .GIF files only support a single level of transparency).
Now in Glitterboo v2.0, the default transparency option is set to "Orig.+new". This means that the original transparency will be preserved, however if you add new effects in the transparent areas (e.g., using the pen selection tool), then the transparency will be altered in order to not cut-off these effects.
You can also change back to the previous behaviour by selecting "Original". This means that only the original image transparency is used, so some effects may get cut off if they are located in or near a transparent part of the image.
When the "Trans." option is set to "Original" (only use the original image transparency), effects very close to the (transparent) edge of an image
may get "cut-off" by the transparency.
You can check for this using the Animation Preview window. If you set the "Trans." option to "Orig.+new" instead, the transparency will be removed in any areas where you add effects (see image above for an example).