[fpc-devel] TFPCustomCanvas Expanded Clipping

Felipe Monteiro de Carvalho felipemonteiro.carvalho at gmail.com
Wed Dec 7 08:06:30 CET 2011

On Wed, Nov 30, 2011 at 10:35 AM,  <michael.vancanneyt at wisa.be> wrote:
> Good basics.
> What about the following:
> Create TBaseClipRegion with abstract method PointIsInRegion(P : TPoint)
> (and maybe some others, like line intersections or so).

Indeed good idea, I am implementing like that with slightly different
names (TFPCustomRegion and IsPointInRegion).

And what about adding virtual to many drawing methods in
TFPCustomCanvas? This way TCanvas could override them more cleanly
without the need to hide them.

I know that the design is to make people implement DoRectangle, etc,
instead, but I can clearly see a case for changing more directly the
behavior. Also fcl-image comes without debug info, so removing the
methods from TCanvas would bring a debugging annoyance.

Felipe Monteiro de Carvalho

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