ref: c76cc12a1799ce214b07882eb6f4ab0906c0151b
dir: /sys/src/cmd/mothra/libpanel/canvas.c/
#include <u.h> #include <libc.h> #include <draw.h> #include <event.h> #include <panel.h> #include "pldefs.h" typedef struct Canvas Canvas; struct Canvas{ void (*draw)(Panel *); void (*hit)(Panel *, Mouse *); }; void pl_drawcanvas(Panel *p){ Canvas *c; c=p->data; if(c->draw) c->draw(p); } int pl_hitcanvas(Panel *p, Mouse *m){ Canvas *c; c=p->data; if(c->hit) c->hit(p, m); return 0; } void pl_typecanvas(Panel *p, Rune c){ USED(p, c); } Point pl_getsizecanvas(Panel *p, Point children){ USED(p, children); return Pt(0,0); } void pl_childspacecanvas(Panel *p, Point *ul, Point *size){ USED(p, ul, size); } void plinitcanvas(Panel *v, int flags, void (*draw)(Panel *), void (*hit)(Panel *, Mouse *)){ Canvas *c; v->flags=flags|LEAF; v->draw=pl_drawcanvas; v->hit=pl_hitcanvas; v->type=pl_typecanvas; v->getsize=pl_getsizecanvas; v->childspace=pl_childspacecanvas; v->kind="canvas"; c=v->data; c->draw=draw; c->hit=hit; } Panel *plcanvas(Panel *parent, int flags, void (*draw)(Panel *), void (*hit)(Panel *, Mouse *)){ Panel *p; p=pl_newpanel(parent, sizeof(Canvas)); plinitcanvas(p, flags, draw, hit); return p; }