protected override bool OnScrollEvent(EventScroll evnt)
{
var alloc = Allocation;
double dx, dy;
evnt.GetPageScrollPixelDeltas(alloc.Width, alloc.Height, out dx, out dy);
if (dx != 0.0 && hScrollBar.Visible)
{
hAdjustment.AddValueClamped(dx);
}
if (dy != 0.0 && vScrollBar.Visible)
{
vAdjustment.AddValueClamped(dy);
}
return((dx != 0.0 || dy != 0.0) || base.OnScrollEvent(evnt));
}
// FIXME: if the editors have different adjustment ranges, the pixel deltas
// don't really feel quite right since they're applied after scaling via the
// linked adjustment
protected override bool OnScrollEvent(EventScroll evnt)
{
//using the size of an editor for the calculations means pixel deltas apply better
var alloc = editors[0].Allocation;
double dx, dy;
evnt.GetPageScrollPixelDeltas(alloc.Width, alloc.Height, out dx, out dy);
if (dx != 0.0 && hAdjustment.PageSize < (hAdjustment.Upper - hAdjustment.Lower))
{
hAdjustment.AddValueClamped(dx / (alloc.Width / hAdjustment.PageSize));
}
if (dy != 0.0 && vAdjustment.PageSize < (vAdjustment.Upper - vAdjustment.Lower))
{
vAdjustment.AddValueClamped(dy / (alloc.Height / vAdjustment.PageSize));
}
return((dx != 0.0 || dy != 0.0) || base.OnScrollEvent(evnt));
}