[REVIEW-3-5] Consistent use of alpha in cairocanvas
thb at documentfoundation.org
Fri Mar 16 09:43:26 PDT 2012
the cairocanvas was slightly inconsistent in it's use of the alpha
channel, when copying from a vcl bitmap.
Cosmetic change to use GetIndex() instead of GetBlue() (same
component), and use 255 aka opaque if no alpha bitmap access
Cherry-pick into -3-5 appreciated.
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