Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <memdraw.h>
#include <memlayer.h>

void
memldelete(Memimage *i)
{
        Memscreen *s;
        Memlayer *l;

        l = i->layer;
        /* free backing store and disconnect refresh, to make pushback fast */
        freememimage(l->save);
        l->save = nil;
        l->refreshptr = nil;
        memltorear(i);

        /* window is now the rearmost;  clean up screen structures and deallocate */
        s = i->layer->screen;
        if(s->fill){
                i->clipr = i->r;
                memdraw(i, i->r, s->fill, i->r.min, nil, i->r.min, S);
        }
        if(l->front){
                l->front->layer->rear = nil;
                s->rearmost = l->front;
        }else{
                s->frontmost = nil;
                s->rearmost = nil;
        }
        free(l);
        freememimage(i);
}

/*
 * Just free the data structures, don't do graphics
 */
void
memlfree(Memimage *i)
{
        Memlayer *l;

        l = i->layer;
        freememimage(l->save);
        free(l);
        freememimage(i);
}

void
_memlsetclear(Memscreen *s)
{
        Memimage *i, *j;
        Memlayer *l;

        for(i=s->rearmost; i; i=i->layer->front){
                l = i->layer;
                l->clear = rectinrect(l->screenr, l->screen->image->clipr);
                if(l->clear)
                        for(j=l->front; j; j=j->layer->front)
                                if(rectXrect(l->screenr, j->layer->screenr)){
                                        l->clear = 0;
                                        break;
                                }
        }
}