Qt-interest Archive, April 2008
qt_graphicsItem_shapeFromPath used for shape()
Message 1 in thread
In trying to find out how how QGraphicsLineItem implements the shape()
function i noticed the function qt_graphicsItem_shapeFromPath(). This seems
like a useful function for custom QGraphicsItems but noticed that it is an
undocumented function. Is there an equivalent users to use? or is there an
easy way to achieve the same?
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Message 2 in thread
Hi,
kitts wrote:
> In trying to find out how how QGraphicsLineItem implements the shape()
> function i noticed the function qt_graphicsItem_shapeFromPath(). This
> seems like a useful function for custom QGraphicsItems but noticed that it
> is an undocumented function. Is there an equivalent users to use? or is
> there an easy way to achieve the same?
You can use QPainterPathStroker, a public class. The helper function inside
QGraphicsItem uses only public APIs, AFAICT.
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Message 3 in thread
On Monday 07 April 2008 20:03:19 Andreas Aardal Hanssen wrote:
> kitts wrote:
> > In trying to find out how how QGraphicsLineItem implements the shape()
> > function i noticed the function qt_graphicsItem_shapeFromPath(). This
> > seems like a useful function for custom QGraphicsItems but noticed that
> > it is an undocumented function. Is there an equivalent users to use? or
> > is there an easy way to achieve the same?
>
> You can use QPainterPathStroker, a public class. The helper function inside
> QGraphicsItem uses only public APIs, AFAICT.
Thanks. That was easy and the implementation of that function is right up
there in the same file. Why not make this convenience function available for
users? Anyway i would recommend a mention of it in the docs as a tip/hint.
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Message 4 in thread
kitts wrote:
>> You can use QPainterPathStroker, a public class. The helper function
>> inside QGraphicsItem uses only public APIs, AFAICT.
> Thanks. That was easy and the implementation of that function is right up
> there in the same file. Why not make this convenience function available
> for users? Anyway i would recommend a mention of it in the docs as a
> tip/hint.
Good point! I'll add a mention to the documentation.
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