private static void OrientationPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
BidirectionalIndicator bidirectionalProgressbar = (BidirectionalIndicator)d;
Orientation orientation = (Orientation)e.NewValue;
// Don't do anything if the orientation is the same as before.
if (orientation == (Orientation)e.OldValue)
{
return;
}
switch (orientation)
{
case Orientation.Horizontal:
// convert the layout grid from 1x2 to 2x1
bidirectionalProgressbar.layoutRoot.RowDefinitions.RemoveAt(1);
bidirectionalProgressbar.layoutRoot.ColumnDefinitions.Add(new ColumnDefinition());
// reposition the progressbars to their appropriate cells
Grid.SetColumn(bidirectionalProgressbar.positiveProgressBar, 1);
Grid.SetRow(bidirectionalProgressbar.negativeProgressBar, 0);
// switch the progressbars' orientations
bidirectionalProgressbar.negativeProgressBar.Orientation = Orientation.Horizontal;
bidirectionalProgressbar.positiveProgressBar.Orientation = Orientation.Horizontal;
// transform the negativeProgressBar by adding a rotation of 180 degrees
// scoping brackets used to avoid transformGroup name conflict
{
TransformGroup transformGroup = (TransformGroup)bidirectionalProgressbar.negativeProgressBar.RenderTransform;
transformGroup.Children.Add(new RotateTransform(180));
}
break;
case Orientation.Vertical:
// convert the layout grid from 2x1 to 1x2
bidirectionalProgressbar.layoutRoot.ColumnDefinitions.RemoveAt(1);
bidirectionalProgressbar.layoutRoot.RowDefinitions.Add(new RowDefinition());
// reposition progressbars to their appropriate cells
Grid.SetRow(bidirectionalProgressbar.negativeProgressBar, 1);
Grid.SetColumn(bidirectionalProgressbar.positiveProgressBar, 0);
// switch the progressbars' orientations
bidirectionalProgressbar.negativeProgressBar.Orientation = Orientation.Vertical;
bidirectionalProgressbar.positiveProgressBar.Orientation = Orientation.Vertical;
// transform the negativeprogressbar by removing the 180 degree rotation
// scoping brackets used to avoid transformGroup name conflict
{
TransformGroup transformGroup = (TransformGroup)bidirectionalProgressbar.negativeProgressBar.RenderTransform;
transformGroup.Children.RemoveAt(1);
}
break;
default:
throw new NotImplementedException("Orientation not implemented.");
}
}
private static void ValuePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
BidirectionalIndicator bidirectionalIndicator = (BidirectionalIndicator)d;
double value = (double)e.NewValue;
if (value > 0)
{
bidirectionalIndicator.negativeProgressBar.Value = 0.0;
bidirectionalIndicator.positiveProgressBar.Value = value;
}
else if (value < 0)
{
bidirectionalIndicator.negativeProgressBar.Value = -value;
bidirectionalIndicator.positiveProgressBar.Value = 0.0;
}
else
{
bidirectionalIndicator.negativeProgressBar.Value = 0.0;
bidirectionalIndicator.positiveProgressBar.Value = 0.0;
}
}
