[Qgis-developer] SVG-Icons instead of PNGs?

[G. Allegri]

Scaling SVG in Inkscapes is known to be problematic. Are you sure that this
applies to Qt SVG scaling too?

giovanni

2012/7/31 Robert Szczepanek <robert at szczepanek.pl>

> Hi Andreas,
>
> I made fast SVG downscaling test. Rendered with Inkscape.
> Second column is shifted vertically by 0,5px.
> As you can see main problem is "travelling blur" effect. Perhaps there are
> some smart renderers to overcome this.
>
> I would also like to have just one SVG file...
> Robert
>
>
> On 31.07.2012 10:30, Andreas Neumann wrote:
>
>> Hi Robert,
>>
>> Thanks for the reply.
>>
>> Do you have a side-by-side comparison of SVG vs. png and the rendering
>> quality somewhere? I wonder if this is still an issue and if it is - how
>> much of a problem it really is.
>>
>> Having just one icon size instead of n different sizes also has a lot of
>> advantages. Think about all the new high-dpi devices. These would
>> benefit a lot from SVG instead of PNG.
>>
>> Andreas
>>
>> On Tue, 31 Jul 2012 00:53:40 +0200, Robert Szczepanek wrote:
>>
>>> Hi Andreas,
>>>
>>> On 29.07.2012 12:22, Andreas Neumann wrote:
>>>
>>>> Regarding the discussion around the icons?
>>>>
>>>> How about using SVG icons instead of fixed size png icons? That way one
>>>> could easily scale the icon sizes on different devices to the preferred
>>>> scale and taste of the user.
>>>>
>>>
>>> From my test and literature I found that simple vector scaling for
>>> small size icons (16x16 - 24-24) is not recommended. For higher images
>>> blur effect is not so visible and important.
>>>
>>>  Are there any technical reasons for using PNGs instead of SVGs? I
>>>> believe the source of the icons is SVG anyway?
>>>>
>>>> For my own in house python plugins I always use the SVG icons.
>>>>
>>>
>>> The main technical reason was image quality. We decided to use
>>> already rendered images in "native resolution". I know it sounds
>>> stupid in Scalable Vector ... context, but that's the reality.
>>> Whole version 0.1 of GIS icons was designed in just one SVG file. In
>>> version 0.2 I save them in separate files. So most of the icons is at
>>> the moment available as one file per icon.
>>>
>>> regards,
>>> Robert
>>>
>>>  Andreas
>>>> ______________________________**_________________
>>>> Qgis-developer mailing list
>>>> Qgis-developer at lists.osgeo.org
>>>> http://lists.osgeo.org/**mailman/listinfo/qgis-**developer<http://lists.osgeo.org/mailman/listinfo/qgis-developer>
>>>>
>>>>
>>
>
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-developer
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20120731/b20b38c5/attachment.html>