/// <inheritdoc />
protected override Size MeasureOverride(Size constraint)
{
double scale = constraint.Width / this.ViewDuration.Ticks;
double offset = this.ViewStartTime.Ticks;
UIElementCollection children = this.InternalChildren;
for (int i = 0; i < children.Count; i++)
{
UIElement child = children[i];
long duration = TimelineCanvas.GetDuration(child).Ticks;
long start = TimelineCanvas.GetStartTime(child).Ticks;
double width = Math.Max(duration * scale, this.MinItemWidth);
double left = (start - offset) * scale;
child.Measure(new Size(width, constraint.Height));
}
return(constraint);
}
/// <inheritdoc />
protected override Size ArrangeOverride(Size arrangeBounds)
{
double scale = arrangeBounds.Width / this.ViewDuration.Ticks;
double offset = this.ViewStartTime.Ticks;
UIElementCollection children = this.InternalChildren;
for (int i = 0; i < children.Count; i++)
{
UIElement child = children[i];
long duration = TimelineCanvas.GetDuration(child).Ticks;
long start = TimelineCanvas.GetStartTime(child).Ticks;
double width = Math.Max(duration * scale, this.MinItemWidth);
double left = (start - offset) * scale;
child.Arrange(new Rect(left, 0, width, arrangeBounds.Height));
}
return(arrangeBounds);
}