29 Sep
2002
29 Sep
'02
5:23 a.m.
"Eddie Cottongim" cottonsqueak@earthlink.net wrote:
One current problem involves the ScrollPane [ScrollPane+TwoWayScrollPane]: The entire contents of scrollpanes are drawn all the time, even when most of them are not visible. A heavy user of ScrollPanes can get burned bad on this. Lex Spoon has a patch that fixes this is the special case of PluggableLists, but it is still a problem for others.
Hmm, I suppose the fullDrawOn: method, or maybe one of its close cousins, might be a good place to insert the smarts. Let's see, drawSubmorphsOn: looks promissing -- TransformMorph already has this method overriden to do some clipping, but it simply isn't restrictive about which morphs get drawn.
-Lex