On Apr 6, 2008, at 9:17 PM, Jonathan Woithe wrote: > > Having said that, things are as they are because this is the > behaviour of > the current cairo-based devices. Admittedly a pre-existing > drawable is > different from one created by plplot but even so, consistency can > sometimes > be a good thing. The other thing to bear in mind is that "clearing > to the > background colour" will be the usual operational mode I would > imagine, so an > argument could be raised that the "don't clear" behaviour should be an > opt-in option - possibly set using a new escape function or perhaps > via a > new "flags" option to the PLXcairoDrawableInfo structure. If we > went with > the latter though, PLXcairoDrawableInfo really needs to be made > available > to applications. Currently there's only 2 members - the display > and the > drawable - and it's not too hard for users to hack up their own > structure > to pass in. However, once we go beyond this PLXcairoDrawableInfo > really > must be publically available so users can't get it wrong.
I'd propose making "clearing to the background color" a driver option so that we can use it with xcairo, memcairo and extcairo. I think that we should make our decision about the clearing default consistent across these 3 driver options, but I don't have much preference about whether or not clearing is the default. Doug, any thoughts about having clearing be the default? best, -Hazen ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
