[Lazarus] Using BGRABitmap as TAChart back-end

[Mattias Gaertner]

Alexander Klenin <klenin at gmail.com> hat am 16. März 2011 um 10:45 geschrieben:

> On Wed, Mar 16, 2011 at 19:35, Marc Weustink <marc.weustink at cuperus.nl> wrote:
> > Alexander Klenin wrote:
> >>
> >> Since there seems to be no support for alpha-channel in LCL,
> >> I plan to implement series transparency by using BGRABitmap compoment.
> > Its not optimal now, but the LCL will support alpha one day
>
> But this day is far away, I gather?
> Perhaps BGRABitmap may be (partially) intergated into the LCL?
>
> Anyway, the question was also about managing package dependencies --
> TAChart already have, besides default TCanvas back-end,
> AggPas, OpenGL and Printer back-ends, and SVG is planned.
> Since these back-ends are useful to only a small part of users,
> I do not want TAChart to depend on all these packages by default.
One solution:
Write a package TAChartAggPas, that depends on AggPasLcl and tachartlazaruspkg
and has a unit implementing the aggpas backend for TAChart.


Mattias
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