[Qgis-developer] how to know if QPainter comes from a print job ?
Marco Hugentobler
marco.hugentobler at sourcepole.ch
Mon Nov 4 07:40:29 PST 2013
>The ScaleFactor is distinct of 1 when the composition engine must paint
the map to one specific map scale.
I think you are mixing up QgsRenderContext::scaleFactor() and
QgsRenderContext::rendererScale().
Regards,
Marco
On 04.11.2013 16:29, A Huarte wrote:
> Hi, Marco, finally I added a flag in 'QgsRenderContext' class
> indicating that it works in a 'print composition' task.
> The ScaleFactor is distinct of 1 when the composition engine must
> paint the map to one specific map scale.
>
> At any rate, thank you very much!
>
>
>
> ------------------------------------------------------------------------
> *De:* Marco Hugentobler <marco.hugentobler at sourcepole.ch>
> *Para:* qgis-developer at lists.osgeo.org
> *Enviado:* Lunes 4 de noviembre de 2013 11:37
> *Asunto:* Re: [Qgis-developer] how to know if QPainter comes from
> a print job ?
>
> Hi
>
> You cannot get that information from the painter itself (a print
> composition can be printed into QImage, pdf, QPrinter, etc...).
> The safest guess is probably to look at the QgsRenderContext. If
> the parameter 'scaleFactor' is very close to 1.0, it is most
> likely the rendering comes from a print composition.
>
> Regards,
> Marco
>
> On 04.11.2013 11:28, A Huarte wrote:
>> Hi!
>>
>> Within of qgis_core I need know if a QgsRenderContext comes from
>> a print job (from composer) in order to disable one functionality.
>>
>> I get that information from QPainter, QPaintDevice,
>> QPaintEngine::Type ?
>>
>> Thank your very much!
>>
>>
>>
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>
>
> --
> Dr. Marco Hugentobler
> Sourcepole - Linux & Open Source Solutions
> Weberstrasse 5, CH-8004 Zürich, Switzerland
> marco.hugentobler at sourcepole.ch <mailto:marco.hugentobler at sourcepole.ch> http://www.sourcepole.ch <http://www.sourcepole.ch/>
> Technical Advisor QGIS Project Steering Committee
>
>
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--
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
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