SVG import showing image error

[deafmicky]

Hi, 

I'm trying to import SVG file, unfortunately showing image error. With other programs (Inkscape, macSVG, Adobe Illustrator and others) shows correct representation, only Affinity family does not. Is this bug?

As an example, you can get SVG from Wikipedia and look.

https://upload.wikimedia.org/wikipedia/commons/c/cd/Coat_of_arms_of_Hesse.svg?download

[deafmicky]

Half solved if i SVG convert to PDF (from Mac App Store) and open PDF with Affinity Family and it's correct. But can't direct from Affinity.

[Joachim_L]

Opens fine in ANY Affinity product. What image error is shown? Screenshot?

With which Affinity software did you try to open? Windows? Mac? ipad?

[deafmicky]

18 minutes ago, Joachim_L said:

Opens fine in ANY Affinity product. What image error is shown? Screenshot?

With which Affinity software did you try to open? Windows? Mac? ipad?

See Image. I use with macOS Mojave but other my old iMac with macOS Sierra, same problems

 

Edited August 8, 2019 by deafmicky

[Palatino]

There are also display errors in Boxy SVG.

[Palatino]

I have drawn such coats of arms many years professionally first by hand and then with graphic programs. Therefore I may say that the file has a very bad structure.

[deafmicky]

2 minutes ago, Palatino said:

There are also display errors in Boxy SVG.

 

But other Application no problem. You can try SVG convert from Mac App Store and you see image is correct.

[Joachim_L]

25 minutes ago, Palatino said:

Therefore I may say that the file has a very bad structure.

Has it? But why do most editors do not stumble upon the bad structure? So I would claim this a bug.

[Palatino]

6 minutes ago, Joachim_L said:

Has it? But why do most editors do not stumble upon the bad structure? So I would claim this a bug.

Then ask machines in the graphics industry. The file structure is extremely error-prone. As you can see.

[v_kyr]

That SVG drawing uses a SVG <pattern> element ...

<?xml version="1.0"?>
<svg viewBox="-1 -1 430 518" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<pattern id="a" height="76.78" patternTransform="translate(10 151.5)" patternUnits="userSpaceOnUse" width="360">
<path d="m.01 0h359.99l-.01 38.39h-359.99z" fill="#e10000"/>
<path d="m.01 38.39h359.99l-.01 38.39h-359.99z" fill="#fff"/>
</pattern>
...
...

... and the Affinity SVG parser has no clue about patterns, meaning doesn't support those SVG elements. Thus it can't show up that SVG drawing correctly, which you can also see from the layers panel, there is no layer with ID "a" (<pattern id="a" ...) shown, it doesn't recognize and omits this during parsing.

 

[R C-R]

7 hours ago, v_kyr said:

That SVG drawing uses a SVG <pattern> element ...

From near the end of that linked page:

I have no idea what that means, but from other links apparently there is a potential issue with something sometimes being undefined that may have something to do with its deprecated status. Perhaps the forum's SVG gurus can explain more about that.

[v_kyr]

That‘s just for the „xlink:href“ attribut of pattern elements...

Quote

xlink:href Deprecated since SVG 2

This attribute reference a template pattern that provides default values for the <pattern> attributes.
Value type: <URL>; Default value: none; Animatable: yes

Note: For browsers implementing href, if both href and xlink:href are set, xlink:href will be ignored and only href will be used.

...and is replaced by href since SVG2 (see here).

So that doesn't play any role at all in this threads error contents, the point is more, that Affinity's SVG parser doesn't take <pattern> elements into account at all.