private static void OnScaleChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
ZoomElement thisLabel = (ZoomElement)source;//get this label
if (Math.Abs((double)e.NewValue - (double)e.OldValue) < 0.00001)
{
return;
}
if (thisLabel.ParentScaleX != 0)
{
double tempScaleX = (1.0 / thisLabel.ParentScaleX) * (thisLabel.Scale);
thisLabel.SetScaleX(tempScaleX);
}
if (thisLabel.ParentScaleY != 0)
{
double tempScaleY = (1.0 / thisLabel.ParentScaleY) * (thisLabel.Scale);
thisLabel.SetScaleY(tempScaleY);
}
thisLabel.ReinitializePosition(null, null);//update the label position
}
private static void OnYLocationPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
ZoomElement thisLabel = (ZoomElement)source; //get this label
thisLabel.ReinitializePosition(null, null); //update the label position
}
/// <summary>
/// When the canvas size changes. ie on window maximization, recalculates the position of the label in the canvas
/// </summary>
/// <param name="source"></param>
/// <param name="e"></param>
private static void OnParentWidthAndHeightPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
{
ZoomElement thisLabel = (ZoomElement)source; //get this label
thisLabel.ReinitializePosition(null, null); //update its margins based on the new size
}