void HeaderCtrl::LeftDrag(Point p, dword keyflags)
{
if(li < 0 || !moving) return;
int n = 0;
for(int i = 0; i < col.GetCount(); i++)
if(col[i].visible)
n++;
if(n < 2)
return;
push = false;
ti = li;
pushi = -1;
Refresh();
Rect r = GetTabRect(li).OffsetedHorz(-sb);
Size sz = r.GetSize();
ImageDraw iw(sz.cx, sz.cy);
bool first = true;
col[li].Paint(first, iw, 0, 0, sz.cx, sz.cy, false, false, false);
DrawFrame(iw, sz, SColorText());
dragtab = iw;
dragx = p.x;
dragd = r.left - p.x;
ImageBuffer ib(dragtab);
Unmultiply(ib);
RGBA *s = ~ib;
RGBA *e = s + ib.GetLength();
while(s < e) {
s->a >>= 1;
s++;
}
Premultiply(ib);
dragtab = ib;
isdrag = true;
}
void RGBACtrl::Set(RGBA c)
{
Unmultiply(&c, &c, 1);
color = StraightColor(c);
ramp <<= color;
alpha.SetColor(color);
MaskSet(c.a);
}
Image IconDes::MakeIconDesCursor(const Image& arrow, const Image& cmask)
{
RGBA c = CurrentColor();
c.a = 255;
Image ucmask = Unmultiply(cmask);
ImageBuffer ib(ucmask.GetSize());
const RGBA *m = ~ucmask;
RGBA *t = ~ib;
RGBA *e = ib.End();
while(t < e) {
*t = c;
t->a = m->a;
m++;
t++;
}
Image cm(ib);
Image r = arrow;
Over(r, Point(0, 0), Premultiply(cm), r.GetSize());
return r;
}
