QCCompositionParameterView doesn't provide access to Alpha for Color Ports

Originator:chris.wrigh7
Number:rdar://7313540 Date Originated:2009.10.18
Status:Open Resolved:
Product:Developer Tools Product Version:3.0 - 4.0
Classification:UI/Usability Reproducible:Always
 
18-Oct-2009 09:33 AM Christopher Wright:
Summary: The QCCompositionParameterView does not provide a Color Chooser panel that exposes a color's Alpha (opacity) component.

Steps to Reproduce:
   * Create a composition with a published color input.
   * Create a QCCompositionParameterView, set its compositionRenderer to the above.
   * Click the color well from the view to edit it.
   * Note the lack of an Alpha slider.

Expected Results: The alpha component should be exposed along with the rest of the color components (red, green, blue, or CMYK, etc.)

Actual Results: Alpha is not editable.

Regression: This happens on Leopard and Snow Leopard (QC3 and QC4).

Notes: It's possible to work around this by using an RGB Color patch, and publishing the alpha value separately -- it then becomes a slider in the parameter view.  This isn't very consistent (the colors are in a different panel from the color's alpha component).



'QCCPVRGBA Parameter.zip' was successfully uploaded

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