static void
addflush(Rectangle r)
{
if(flushr.min.x >= flushr.max.x)
flushr = r;
else
combinerect(&flushr, r);
}
static void
addrect(Rectangle *rp, Rectangle r)
{
if(rp->min.x >= rp->max.x)
*rp = r;
else
combinerect(rp, r);
}
void
drawrampbar(Image *color, State *s)
{
Rectangle liner, r;
static Rectangle br;
if(Dx(br))
draw(screen, br, ramp, nil, subpt(br.min, rramp.min));
r = rramp;
r.max.x = r.min.x + (int)(s->white*255.0);
r.min.x += (int)(s->black*255.0);
r.min.y += gamma2y(s->gamma);
r.max.y = r.min.y+1;
rectclip(&r, rramp);
draw(screen, r, color, nil, ZP);
br = r;
r.min.y -= 2;
r.max.y += 2;
liner = r;
r.min.x += Dx(liner)/3;
r.max.x -= Dx(liner)/3;
rectclip(&r, rramp);
draw(screen, r, color, nil, ZP);
combinerect(&br, r);
r = liner;
r.max.x = r.min.x+3;
rectclip(&r, rramp);
draw(screen, r, color, nil, ZP);
combinerect(&br, r);
r = liner;
r.min.x = r.max.x-3;
rectclip(&r, rramp);
draw(screen, r, color, nil, ZP);
combinerect(&br, r);
}
void
addtorlist(Rlist *rlist, Rectangle r)
{
int i, j;
Rectangle ir, cr, rr;
Rlist tmp;
if(r.min.x >= r.max.x || r.min.y >= r.max.y)
return;
memset(&tmp, 0, sizeof tmp);
rappend(&tmp, r);
if(verbose > 5)
fprint(2, "region union add %R:\n", r);
combinerect(&rlist->bbox, r); // must do this first
for(j = 0; j < tmp.nrect; j++){
r = tmp.rect[j];
for(i=0; i < rlist->nrect; i++){
ir = rlist->rect[i];
if(verbose > 5)
fprint(2, "checking %R against %R\n", r, ir);
if(!rectadjacent(ir, r))
continue;
/* r is covered by ir? */
if(rectinrect(r, ir))
break;
/* r covers ir? */
if(rectinrect(ir, r)){
rtrim(rlist, i);
i--;
continue;
}
/* aligned and overlapping? */
if((ir.min.y == r.min.y && ir.max.y == r.max.y) ||
(ir.min.x == r.min.x && ir.max.x == r.max.x)){
combinerect(&r, ir);
rtrim(rlist, i);
i--;
continue;
}
/* not aligned */
if(verbose > 5)
fprint(2, "break up rect %R and %R\n", ir, r);
/* 2->2 breakup */
cr = ir;
if (!rectclip(&cr, r)) /* share only one point */
continue;
if(rectubr(&r, cr))
continue;
if(rectubr(&rlist->rect[i], cr))
continue;
/* 2 -> 3 breakup */
/* stride across */
if(recttridesubr(&r, cr, &rr)){
rappend(&tmp, rr);
continue;
}
/* corner overlap */
if(rectcornersubr(&r, cr, &rr)){
rappend(&tmp, rr);
continue;
}
abort();
}
if(i == rlist->nrect)
rappend(rlist, r);
}
freerlist(&tmp);
if(verbose > 5)
rprint(rlist);
}
static void
vgascreenputc(VGAscr* scr, char* buf, Rectangle *flushr)
{
Point p;
int h, w, pos;
Rectangle r;
// drawdebug = 1;
if(xp < xbuf || xp >= &xbuf[sizeof(xbuf)])
xp = xbuf;
h = scr->memdefont->height;
switch(buf[0]){
case '\n':
if(curpos.y+h >= window.max.y){
vgascroll(scr);
*flushr = window;
}
curpos.y += h;
vgascreenputc(scr, "\r", flushr);
break;
case '\r':
xp = xbuf;
curpos.x = window.min.x;
break;
case '\t':
p = memsubfontwidth(scr->memdefont, " ");
w = p.x;
if(curpos.x >= window.max.x-4*w)
vgascreenputc(scr, "\n", flushr);
pos = (curpos.x-window.min.x)/w;
pos = 4-(pos%4);
*xp++ = curpos.x;
r = Rect(curpos.x, curpos.y, curpos.x+pos*w, curpos.y + h);
memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min, S);
curpos.x += pos*w;
break;
case '\b':
if(xp <= xbuf)
break;
xp--;
r = Rect(*xp, curpos.y, curpos.x, curpos.y+h);
memimagedraw(scr->gscreen, r, back, back->r.min, nil, ZP, S);
combinerect(flushr, r);
curpos.x = *xp;
break;
case '\0':
break;
default:
p = memsubfontwidth(scr->memdefont, buf);
w = p.x;
if(curpos.x >= window.max.x-w)
vgascreenputc(scr, "\n", flushr);
*xp++ = curpos.x;
r = Rect(curpos.x, curpos.y, curpos.x+w, curpos.y+h);
memimagedraw(scr->gscreen, r, back, back->r.min, nil, back->r.min, S);
memimagestring(scr->gscreen, curpos, conscol, ZP, scr->memdefont, buf);
combinerect(flushr, r);
curpos.x += w;
}
// drawdebug = 0;
}
