mark arrow obscured by pointer
lazarus / 55-TAChart

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mtanner · 2015-11-16 10:12

With a TLineSeries I'm attaching marks. The arrowhead is obscured by
the pointer itself, because the end-point of the arrow is the centre
of the pointer, not the edge. Is there any way of pushing the arrow
end-point back to the edge of pointer?

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wp · 2015-11-16 10:51

No. Let me see how to fix this...

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wp · 2015-11-16 23:46

In the new version in trunk, the series marks have a new property
"LinkDistance" which shifts the arrow head away from the data point.
Use a value greater than the series pointer's VertSize to prevent
covering the arrow by the pointer.

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mtanner · 2015-11-16 23:49

Thanks. I'll update my copy of Lazarus at some point then.

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wp · 2015-11-17 00:10

Ah, looks as if you don't use trunk? I am attaching the modified file
- I am not 100% sure, but I think there are no incompatible changes
with older versions. So, extract the TATextElements.pas from the
attached zip and copy it into your TAChart folder,
(lazarus)\components\tachart, but make a copy of the original file
first - just in case if something goes wrong. Then open Lazarus and
rebuild the IDE (in the tools menu)