private void MovePattern(PatternPlacementViewModel pp, long deltaStart, int deltaIndex)
{
long newStart = SnapToGridInternal(pp.Start + deltaStart);
int newIndex = pp.TrackIndex + deltaIndex;
pp.Start = Math.Max(0, newStart);
pp.TrackIndex = Math.Max(MinVerticalValue, Math.Min(newIndex, MaxVerticalValue));
}
private void ResizePattern(PatternPlacementViewModel pp, double delta)
{
int end = pp.Start + pp.Length;
int newEnd = SnapToGridInternal(end + PixelToTick(delta));
if (newEnd > pp.Start)
{
pp.Length = newEnd - pp.Start;
}
}
private void CalculateAffectedItems(FrameworkElement view)
{
if (((PatternPlacementView)view).IsSelected)
{
_affectedItems = SelectedItems.Cast <PatternPlacementViewModel>();
_minTick = _affectedItems.MinBy(pp => pp.Start);
(_minTrack, _maxTrack) = _affectedItems.MinMaxBy(pp => pp.TrackIndex);
}
else
{
_affectedItems = new[] { (PatternPlacementViewModel)view.DataContext };
_minTick = _minTrack = _maxTrack = (PatternPlacementViewModel)view.DataContext;
}
}
protected override Rect CalculateRectForElement(FrameworkElement element)
{
PatternPlacementViewModel pp = (PatternPlacementViewModel)element.DataContext;
return(new Rect(new Point(pp.Start * WidthPerTick, pp.TrackIndex * 60), new Size(pp.Length * WidthPerTick, 60)));
}
protected override Size CalculateSizeForElement(FrameworkElement element)
{
PatternPlacementViewModel pp = (PatternPlacementViewModel)element.DataContext;
return(new Size(pp.Length * WidthPerTick, 60));
}
