[Qgis-developer] Re: SVGFill test

[John C. Tull]

Hi Marco,

On Jan 17, 2010, at 12:54 AM, Marco Hugentobler wrote:

> Hi John
> 
>> Still it is unusual
>> that it renders it so differently on my system than yours based on your
>> screen grab.
> 
> Which version of Qt are you using?

Qt-4.6.0 on OS X.

> 
>> As a side note, it would be great to have an option in the symbol
>> properties to adjust the spacing between repeats of the svg image fill.
>> I.e., padding the repeated elements by some value so the spacing can be
>> adjusted without having to manually change the svg symbol itself.
> 
> I also think this would be a usefull option. Could you fill an enhancement 
> request in trac to remind me?

I will do that sometime today.

> 
>> Also, when I tested printing to pdf the fill patter from the composer, the
>> svg is scaled up to a huge size, practically filling the entire map space
>> with only one symbol. Have you tested a print to pdf yourself yet?
> 
> This is a bug in the Qt pdf printer (see the answer that I received on the qt-
> interest mailing list about it). However, I think not all versions are 
> affected. At my development machine in the office, it seems to work with pdf too.

What qt version are you using? Perhaps downgrading to 4.5.x makes some sense, if not for the pdf issue, then maybe for the rendering issue above. I have not tested an image export yet.

Cheers,
John

> Regards,
> Marco
> 
> Mail on qt-interest:
> 
> Marco Hugentobler wrote:
>> Hi all
>> 
>> I'm setting a QTransform object to QBrush to scale the image texture, like 
>> this:
>> 
>> QTransform brushTransform;
>> brushTransform.scale(1.0 / context.rasterScaleFactor(), 1.0 / 
>> context.rasterScaleFactor());
>> mBrush.setTextureImage(textureImage);
>> mBrush.setTransform(brushTransform);
>> 
>> This works when drawing with QPainter to QImage, post script and svg. 
> However, 
>> it does not work with the pdf print engine. The image does not gets scaled 
> on 
>> PDF. Is this a known issue?
>> 
>> I'm using Qt 4.5.2 on Linux.
>> 
>> Thanks,
>> Marco
>> 
>> 
> 
> The issue is known as QTBUG-5114 in our bug tracker.
> 
> Regards,
> Kim
> 
> 
> 
> -- 
> Dr. Marco Hugentobler
> HUGIS - GIS programming and consulting
> Webereistr. 66
> CH-8134 Adliswil
> marco at hugis.net
> http://homepage.hispeed.ch/hugis/
> Technical Advisor QGIS Project Steering Committee