public override void UpdateVisual(RadialSegment segment, double startAngle)
{
if (segment == null || !segment.TargetItem.CanNavigate || segment.LayoutSlot == RadialLayoutSlot.Invalid)
{
return;
}
NavigationItemButton navigationButton = this.navigationButtons[segment.TargetItem.Index];
navigationButton.StartAngle = startAngle;
navigationButton.UpdateVisualsState();
}
/// <summary>
/// Occurs when the <see cref="M:OnApplyTemplate" /> method has been called and the template is already successfully applied.
/// </summary>
protected override void OnTemplateApplied()
{
this.arrowGlyph.RenderTransformOrigin = new Point(0, 0);
this.arrowGlyph.RenderTransform = new RotateTransform()
{
Angle = ((90 - this.model.LayoutSlot.SweepAngle / 2) - this.StartAngle) - this.Model.TargetItem.Index * 45
};
this.itemPath.Data = NavigationItemButton.GetNavigationButtonArc(this.Model);
this.ArrangeArrowGlyph();
base.OnTemplateApplied();
}
internal void UpdateVisualsState()
{
if (!this.IsTemplateApplied)
{
return;
}
this.itemPath.Data = NavigationItemButton.GetNavigationButtonArc(this.Model);
this.arrowGlyph.RenderTransform = new RotateTransform()
{
Angle = (90 - this.model.LayoutSlot.SweepAngle / 2.0 - this.StartAngle) - this.Model.TargetItem.Index * 45
};
this.ArrangeArrowGlyph();
}
public override void ShowVisual(RadialSegment segmentModel, double startAngle)
{
if (segmentModel == null || !segmentModel.TargetItem.CanNavigate || segmentModel.LayoutSlot == RadialLayoutSlot.Invalid)
{
return;
}
NavigationItemButton navigationButton = this.navigationButtons[segmentModel.TargetItem.Index];
navigationButton.StartAngle = startAngle;
navigationButton.ResetVisualState();
segmentModel.Visual = navigationButton;
navigationButton.Model = segmentModel;
navigationButton.Visibility = Visibility.Visible;
segmentModel.Visual = navigationButton;
navigationButton.UpdateVisualsState();
}