Alan W. Irwin wrote: > On 2009-10-25 14:13-0700 Alan W. Irwin wrote: > >> On 2009-10-25 15:11-0500 Hezekiah M. Carty wrote: >>> It is my understanding that automatically clearing the page to the >>> background color is intentionally left out of the extcairo device >>> intentionally so that the provided context is preserved. This way a >>> user can provide, for example, an image they want to plot over and it >>> will be preserved. >>> >>> I use this feature of the driver quite often, so I would prefer that >>> the extcairo functionality remain as-is, at least in the default case. >> >> There are two issues here. (1) Should we allow specifying a possibly >> transparent background colour for extcairo similar to every other device >> driver? (2) If the answer to (1) is yes, should that default background >> be transparent? >> >> I would argue pretty strongly for (1) simply because most/all of our >> devices >> have background colour setting capability, and I assume some extcairo >> users >> will want this as well (e.g., for our ext-cairo-test case). I think the >> answer to (2) should depend on what the majority of users are doing with >> extcairo. I don't have a clue about that usage, but if you think the >> majority will be using background images instead of solid backgrounds, >> then >> I would be willing to go along with making the background transparent by >> default for the extcairo case simply as a matter of convenience for that >> majority use case. > > With regards to implementing this, I just realized that it should be easier > to implement background colour processing as a driver option for extcairo > then something more complicated that I had in mind before with transparent > background colours. > > So (1) and (2) should be changed to > > (1) Should we implement background colour processing as a driver option for > extcairo? > > (2) if so, should the default driver option be to have that background > or not for extcairo? > > I think (1) is a no-brainer. On (2) I would be happy to go along with your > instincts about what default would be the most convenient for typical > background (PLplot or image?) usage by all users.
Done. The option is "set_background=0|1". The default is no background. -Hazen ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
