[Libreoffice-bugs] [Bug 121963] button flashing - mouse wheel zooming breaks

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=121963

--- Comment #48 from Armin Le Grand <Armin.Le.Grand at me.com> ---
Seems to be special stuff with controls - sigh.
When breaking in svx\source\sdr\contact\objectcontactofpageview.cxx:290 in line

                    pProcessor2D->process(xPrimitiveSequence);

it can be seen that the ViewInformation2D from *this and at the processor is
the same, while later in LazyControlCreationPrimitive2D::get2DDecomposition it
is *different*.
This is because the processed SeqOfPrim modifies it - in
VclProcessor2D::RenderTransformPrimitive2D. This means the ControlPrimitive
itself contains the offset (in my local example '30' which leads to a pixel
offset of 1.0889). Forcing this to zero silences the repaint.

Thus the question is: Who and why does someone create a TransformPrimitive2D?
There are probably good reasons, so maybe we get a principal problem here...?

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