[Qgis-user] QGIS SVG: outdated warning

[Matthias Kuhn]

I think Nyall will have some more information where things go right and
where they (can) go wrong.

Before improving the dialog text, we will need some insights into what
actually can go wrong and if we are able to predict that a certain
output is particularly prone to suffer from deficiencies.

As a second step we can write a message (or messages) that hints a user
towards potential problems (we see you are using blend modes, these will
be lost when exporting to format X, consider using Y instead) and give
task-focused suggestions (if you want to further edit the result or use
it for interactive web-publishing, use SVG, if you use it for printing
and static presentation prefer PDF).

Bests

Matthias


On 11/25/2017 01:07 PM, Richard Duivenvoorde wrote:
> I added some layers, some blending and transparency, but to be honest
> both in 2.x and 3 outcomes (pdf and svg) were more or less ok to me....
> So not sure what it is exactly that I have to do to fail.
>
> The only difference is that in master I do not get the 'let's print in
> raster...' when printing a pdf.
>
> So what about: keeping the dialog (as I think at least for SVG the
> outcome will never be what a designer wants (id's, layers as layers etc
> etc), but change the message to: "Both pdf and svg exporting is done via
> the Qt-library. Results can vary based on complexity of (painting) of
> you map, but cannot be influenced by QGIS itself." or so?
>
> IF in future certain rendertasks appear to screw up either svg or pdf we
> can always add those?
>
> Regards,
>
> Richard
>
> On 25-11-17 12:42, Matthias Kuhn wrote:
>> Hi Richard,
>>
>> In this case I was confused by the term stable in the previous message.
>>
>> If this is still there on 2.99, can you check if SVG export also works with
>>
>> * Transparency
>>
>> * Layer blend modes
>>
>> IIRC, these were the tricky things.
>>
>> Thanks  a lot
>>
>> Matthias
>>
>>
>> On 11/25/2017 12:31 PM, Richard Duivenvoorde wrote:
>>> I think Tobias was talking about 2.99. Just tested and msg is indeed
>>> still there...
>>> Both (svg and pdf) are working here with a simple colored shape with
>>> labels with me.
>>>
>>> Regards,
>>> Richard
>>>
>>> On 25-11-17 12:20, Matthias Kuhn wrote:
>>>> Hi Tobias,
>>>>
>>>> there is no stable release using Qt5 so far. Can you verify with QGIS 2.99?
>>>>
>>>> Thanks
>>>>
>>>> Matthias
>>>>
>>>>
>>>> On 11/25/2017 09:44 AM, Tobias Wendorff wrote:
>>>>> Hi there!
>>>>>
>>>>> I'm on latest QGIS2 (stable). When choosing "SVG export" on map composer,
>>>>> you'll get this warning:
>>>>>
>>>>> "The SVG export function in QGIS has several problems due to bugs and
>>>>> deficiencies in the Qt4 svg code. In particular, there are problems with
>>>>> layers not being clipped to the map bounding box.
>>>>> If you require a vector-based output file from Qgis it is suggested that
>>>>> you try printing to PostScript if the SVG output is not satisfactory."
>>>>>
>>>>> QGIS2 uses QT5 and there's no PostScript export support anymore ;)
>>>>> Shall I file this as a GUI bug?
>>>>>
>>>>> Best regards,
>>>>> Tobias
>>>>>
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