[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #13 from Igor Zhuravlov  ---
The problem was fixed in the following environment:
- openSUSE Leap 15.2
- Kate 20.04.2
- KDE Frameworks 5.71.0
- Qt 5.12.7 (built with version 5.12.7)
- window system xcb

by the steps you advised:
1) packages webenginepart and svgpart were installed (after that, a svgpart
view component was appeared in the Plasma System Settings: "Applications" >
"File Assocications" > Select "image/svg+xml" > tab "Embedded"),
2) the svgpart view component was moved to the top in the list.

Thank you!

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[kate] [Bug 389091] incorrect rendering of a svg image

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=389091

Bug Janitor Service  changed:

   What|Removed |Added

 Resolution|WAITINGFORINFO  |WORKSFORME
 Status|NEEDSINFO   |RESOLVED

--- Comment #12 from Bug Janitor Service  ---
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!

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[kate] [Bug 389091] incorrect rendering of a svg image

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #11 from Bug Janitor Service  ---
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

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[kate] [Bug 389091] incorrect rendering of a svg image

[Justin Zobel]

https://bugs.kde.org/show_bug.cgi?id=389091

Justin Zobel  changed:

   What|Removed |Added

 Resolution|--- |WAITINGFORINFO
 CC||justin.zo...@gmail.com
 Status|REPORTED|NEEDSINFO

--- Comment #10 from Justin Zobel  ---
Igor I've just tested this on the latest Kate and with svgpart installed the
"Early Translator Writing Systems" image works as expected, the same as it does
in my browser.

Can you please confirm if this is still an issue, thanks.

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[kate] [Bug 389091] incorrect rendering of a svg image

[Friedrich W . H . Kossebau]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #9 from Friedrich W. H. Kossebau  ---
(In reply to Igor Zhuravlov from comment #8)
> I have kwebkitpart of version 1.3.4-1.1 installed. But there is no similar
> name neither in settings dialog you mentioned nor among possible alternative
> services (under "Add" button), see screenshots. I guess it is labeled
> "KHTML", but it is already atop.

Okay, so welcome to convoluted matters :)

KHTML is a separate plugin from kwebkitpart(*), so the latter is still missing
here. 

When it comes to kwebkitpart, I just saw that there is some issue with the
version numnber: kwebkitpart got ported to qt5, but seems it never got
officially released, with a new version number. Still at least openSUSE has
packages of the ported code, but also using 1.3.4 as version. That needs some
poking of people.
For you it needs to check if your version of kwebkitpart is having qt4 or qt5
as dependency. If qt4 (which I assume), it sadly cannot be used, not
compatible. Try to check if you can get hold of a package with the ported
version.

For webenginepart, that one is developed as part of Konqueror
libraries/plugins. On openSUSE it is packaged into a separate package
"webenginepart", other distributions might have thas as part of some konq-*
package.

(*) KHTML still being the original code of what once was forked into webkit by
Apple engineers, which then again was wrapped in that separate kpart by some
other KDE developers, who put their trust rather into webkit devs than the
kthml devs... and we do not know who is more right, so both exist :) )

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[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #8 from Igor Zhuravlov  ---
(In reply to Friedrich W. H. Kossebau from comment #3)
> To improve your situation, see if there is the KParts plugin webenginepart
> or kwebkitpart installed and then choose that one as the most preferred in
> the mentioned settings dialoig. These parts will use the SVG rendering
> engine of web*, which possibly supports more parts of the standard.

I have kwebkitpart of version 1.3.4-1.1 installed. But there is no similar name
neither in settings dialog you mentioned nor among possible alternative
services (under "Add" button), see screenshots. I guess it is labeled "KHTML",
but it is already atop.

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[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #7 from Igor Zhuravlov  ---
Created attachment 109960
  --> https://bugs.kde.org/attachment.cgi?id=109960=edit
Plasma svg services available

Plasma System Settings ("Applications" > "File Assocications" > Select
"image/svg+xml" > tab "Embedded" > Press "+ Add" button

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[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #6 from Igor Zhuravlov  ---
Created attachment 109959
  --> https://bugs.kde.org/attachment.cgi?id=109959=edit
my Plasma settings

Plasma System Settings ("Applications" > "File Assocications" > Select
"image/svg+xml" > tab "Embedded")

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[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #5 from Igor Zhuravlov  ---
(In reply to Kai Uwe Broulik from comment #2)
> Can you check whether it conforms to SVG Tiny 1.2?

No, it's not. But reduced version conforming SVG 1.1 Tiny is not displayed
correctly too, result seems the same. Reduced svg version is attached.

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[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #4 from Igor Zhuravlov  ---
Created attachment 109958
  --> https://bugs.kde.org/attachment.cgi?id=109958=edit
this file is displayed incorrectly, too

Version of original file reduced to conform SVG 1.1 Tiny

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[kate] [Bug 389091] incorrect rendering of a svg image

[Friedrich W . H . Kossebau]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #3 from Friedrich W. H. Kossebau  ---
Thanks for the report.

First some technical background:
The preview plugin relays the rendering in the respective format to a matching
KParts plugin, based on the MIME type. Currently that KParts plugin is used
which is the default one for the given MIME type. And right now the default can
be only controlled via the Plasma System Settings ("Applications" > "File
Assocications" > Select "image/svg+xml" > tab "Embedded").

Chance is that the KParts plugin "svgpart" is the currently top one there.
Which internally uses Qt SVG (https://doc.qt.io/qt-5/qtsvg-index.html), which
"s[S]upports a subset of the SVG 1.2 Tiny standard.". So might not be enough
for your SVG files.

To improve your situation, see if there is the KParts plugin webenginepart or
kwebkitpart installed and then choose that one as the most preferred in the
mentioned settings dialoig. These parts will use the SVG rendering engine of
web*, which possibly supports more parts of the standard.

Please tell if you could make this work and if it improved the preview for you.

Future plan is to allow selecting the KParts plugin to use in Kate settings
itself.

So this is actually not a direct bug of the preview plugin, but a problem of
the svgpart KParts plugin only supporting a subset of SVG. Seems that one has
not yet an entry in bugs.kde,org, will see to create one and then move this bug
report over there.

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[kate] [Bug 389091] incorrect rendering of a svg image

[Kai Uwe Broulik]

https://bugs.kde.org/show_bug.cgi?id=389091

Kai Uwe Broulik  changed:

   What|Removed |Added

 CC||k...@privat.broulik.de

--- Comment #2 from Kai Uwe Broulik  ---
Can you check whether it conforms to SVG Tiny 1.2? See
https://doc.qt.io/qt-5/svgrendering.html

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[kate] [Bug 389091] incorrect rendering of a svg image

[Igor Zhuravlov]

https://bugs.kde.org/show_bug.cgi?id=389091

--- Comment #1 from Igor Zhuravlov  ---
Created attachment 109924
  --> https://bugs.kde.org/attachment.cgi?id=109924=edit
screenshot of Kate window

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