Re: [platform-swt-dev] Using Alpha with Patterns

[Silenio Quarti <Silenio_Quarti@xxxxxxxxxx>]

I believe the alpha value of the GC
does not affect the pattern on Windows and GTK (not sure about
the Mac). Please open a bug report so
that we can check/make this consistent between platforms.

Silenio

Randy Hudson <hudsonr@xxxxxxxxxx>
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10/31/2005 10:23 PM

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Subject	Re: [platform-swt-dev] Using Alpha with Patterns

I think the point is that a normal (opaque) pattern should be 50% transparent
when the entire GC is set to 50%. Is this not what happens on other platforms?

Silenio Quarti <Silenio_Quarti@xxxxxxxxxx>
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10/31/2005 01:52 PM

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Subject	Re: [platform-swt-dev] Using Alpha with Patterns

This feature was just added after SWT 3.1 shipped. See Pattern(Device,
float, float, float, float, Color, int, Color, int). You can
specify a alpha value for the start and end colors.

Silenio

Arnaud De Muyser <ademuyser@xxxxxxxxxx>
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10/28/2005 12:09 PM

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Subject	[platform-swt-dev] Using Alpha with Patterns

Hi, 
I'm trying new SWT 3.1 GC features, incredible, a real big step for graphics
! 
When I use alpha (setAlpha(100) for example) and use a background or foreground
pattern, 
pattern is drawn without using current transparency value (I create pattern
with png and jpeg images). 

How can I paint patterns using alpha transparency ?

Thanks for your help. 

Arnaud._______________________________________________
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