Re: [xep-support] Another question?

From: Nikolai Grigoriev (grig@renderx.com)
Date: Wed Feb 26 2003 - 12:28:05 PST

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    Hello Pierre,

    > May I use external-graphics and background-color together? Then, I can
    > specify some regions' color in the picture as transparency in order to
    show
    > the background-color beneath it.

    Yes, you can specify background-color on fo:external-graphic. This color
    will be visible in transparent portions of the image, and around
    the image if the padding is not zero.

    > Also, which graphics format can be allowed
    > to specify some region as transparency?

    We support transparency in GIFs. In PNG, we support single-color
    transparency for grayscale and TrueColor images. For palette
    (indexed color) PNG images, the first fully transparent color
    is picked from the palette (only one). Alpha channel is not
    supported.

    NOTE: transparency works in PDF output only!

    Best regards,
    Nikolai Grigoriev
    RenderX

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