ref: 2d221e61e3820a007ff2204adb73ad3ab27010c6
dir: /sys/src/cmd/mothra/libpanel/scroll.c/
#include <u.h> #include <libc.h> #include <draw.h> #include <event.h> #include <panel.h> #include "pldefs.h" void plscroll(Panel *scrollee, Panel *xscroller, Panel *yscroller){ scrollee->xscroller=xscroller; scrollee->yscroller=yscroller; if(xscroller) xscroller->scrollee=scrollee; if(yscroller) yscroller->scrollee=scrollee; } Scroll plgetscroll(Panel *p){ return p->scr; } void plsetscroll(Panel *p, Scroll s){ if(p->scroll){ if(s.size.x) p->scroll(p, HORIZ, 2, s.pos.x, s.size.x); if(s.size.y) p->scroll(p, VERT, 2, s.pos.y, s.size.y); } }