Peter A. wrote:
I have an issue with use of SVG image files in figures. The bounding box
for the image displayed in the imagedata element has extra space around
it. When I generate a PDF file of the document, the image size is very
small. Please see the attached files as an example. System configuration
from the About display is reproduced below.
Could you please advise if this is a known issue and whether there is a
fix or work-around?
Your question is not really related to our product, more to SVG.
Your "Figure.svg" starts with:
<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg";
viewBox="0 0 179.08 156.41">
No width and height attributes: implies 100%
(https://www.w3.org/TR/SVG11/struct.html#SVGElementWidthAttribute).
However "Figure.svg" has a viewBox attribute
(https://www.w3.org/TR/SVG11/coords.html#ViewBoxAttribute).
--> In practice, this means that "Figure.svg" has no intrinsic size.
Therefore the software used to render "Figure.svg" is free to understand
width=100% and height=100% as it wants.
Examples:
- Firefox (opened "Figure.svg" in it) understands width=100% and
height=100% as an intrinsic size of 100% of its own window, which is huge.
- Apache FOP (and RenderX XEP) understands viewBox="0 0 179.08 156.41"
as an intrinsic size of 179x156 pixels, which is indeed tiny.
--> Workarounds:
- Use XMLmind XML Editor "Attributes" tool
(http://www.xmlmind.com/xmleditor/_distrib/doc/help/editAttributePane.html)
to specify the contentwidth and contentdepth attributes of the
<imagedata fileref="Figure.svg"/>
(https://tdg.docbook.org/tdg/5.1/imagedata.html)
In practice, specifying just attribute contentwidth suffices (e.g.
contentwidth="10cm") because attribute contentdepth is then
automatically computed in order to preserve the aspect ratio of the image.
OR
- Use an SVG editor (e.g. Inkscape, https://inkscape.org/) to give width
and height attributes to the root <svg> element of "Figure.svg".
--
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xmleditor-support@xmlmind.com
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