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Item6720: Colors should allow 'transparent' as a value

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AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Extension ChartPlugin Normal Closed   n/a  

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Colors should allow 'transparent' as a value in addition to the current #RRGGBB values.

-- TWiki:Main/TaitCyrus - 2011-05-12

Allow support for transparent to be used in colors and bgcolor. Mostly to be used with spark* charts so chart backgrounds will blend in with the background they are placed on. So for spark* you would set bgcolor="transparent transparent".

-- TaitCyrus - 2011-05-13

Thanks Tait for working on this!

Reading http://search.cpan.org/~lds/GD-2.46/GD.pm - there is support for transparency:

        $im = newFromPng GD::Image(PNG);
        $white = $im->colorClosest(255,255,255); # find white
        binmode STDOUT;
        print $im->png;

-- TWiki:Main.PeterThoeny - 2011-05-13

Summary Colors should allow 'transparent' as a value
ReportedBy TWiki:Main.TaitCyrus

SVN Range TWiki-5.1.0-trunk, Tue, 19 Apr 2011, build 21041
AppliesTo Extension
Component ChartPlugin
Priority Normal
CurrentState Closed

Checkins TWikirev:21225
TargetRelease n/a

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Topic revision: r4 - 2011-05-13 - PeterThoeny
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