void QColorLuminancePicker::paintEvent() is very slow

QColorLuminancePicker::paintEvent() is slow. This probably would never be that noticeable except that I resized QColorLuminancePicker so it is more usable on Android, and it runs very slow.

When I looked at the code I noticed that there is code in the inner-most loop that should be in the loop one back... That should speed up the function quite a bit without rewriting the whole thing.

Currently:
for (y = 0; y < hi; y++) {
const uint *end = pixel + wi;
while (pixel < end)

{ QColor c; c.setHsv(hue, sat, y2val(y+coff)); *pixel = c.rgb(); ++pixel; }

}

Should be:
for (y = 0; y < hi; y++) {
const uint *end = pixel + wi;
QColor c;
c.setHsv(hue, sat, y2val(y+coff));
while (pixel < end)

{ *pixel = c.rgb(); ++pixel; }

}