/// <summary>
/// A virtual method that is called when the Owner of this indicator changes.
/// </summary>
/// <param name="newOwner">The new Owner.</param>
/// <param name="oldOwner">The old Owner.</param>
internal virtual void OnOwnerChanged(GaugePanel newOwner, GaugePanel oldOwner)
{
if (newOwner != null)
{
newOwner.ScheduleUpdate();
}
}
/// <summary>
/// Called in the measure layout pass to determine the desired size.
/// </summary>
/// <param name="availableSize">The available size that was given by the layout system.</param>
/// <returns>Returns the desired size of the indicator.</returns>
protected override Size MeasureOverride(Size availableSize)
{
if (this.MeasureCallback != null)
{
this.MeasureCallback();
}
if (this.ownerPanel == null)
{
this.ownerPanel = ElementTreeHelper.FindVisualAncestor <GaugePanel>(this);
}
Size result = RadGauge.NormalizeSize(availableSize);
if (result.Width == 0 || result.Height == 0)
{
result = this.ownerPanel.LastMeasureSize;
}
this.Update(result);
this.LastMeasureSize = result;
return(result);
}
/// <summary>
/// Resolves the control's template parts.
/// </summary>
protected override bool ApplyTemplateCore()
{
bool applied = base.ApplyTemplateCore();
this.panel = this.GetTemplatePartField <GaugePanel>(PanelPartName);
applied = applied && this.panel != null;
return(applied);
}
/// <summary>
/// A virtual method that is called when the Owner of this indicator changes.
/// </summary>
/// <param name="newOwner">The new Owner.</param>
/// <param name="oldOwner">The old Owner.</param>
internal override void OnOwnerChanged(GaugePanel newOwner, GaugePanel oldOwner)
{
base.OnOwnerChanged(newOwner, oldOwner);
Orientation orientation = RadLinearGauge.GetOrientation(newOwner);
this.isHorizontal = orientation == Orientation.Horizontal;
RadLinearGauge.SetOrientation(this, orientation);
}