/// <summary>
/// Calculates the new size for the Left element being expanded.
/// </summary>
/// <param name="totalSize"></param>
/// <param name="startingPoint"></param>
/// <returns></returns>
private double NewSizeForExpansion(Double totalSize, Double startingPoint)
{
Double newSize = totalSize;
if (CommonTasksExpanded)
{
GridLengthAnimation gla = new GridLengthAnimation();
gla.From = new GridLength(CommonTasksContentDef.ActualHeight);
gla.To = new GridLength(newSize, GridUnitType.Star);
gla.Duration = new Duration(new TimeSpan(1000000));
CommonTasksContentDef.BeginAnimation(RowDefinition.HeightProperty, gla);
}
return newSize;
}
/// <summary>
/// Handles the event when the Common Tasks Header is clicked
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void CommonTasksExpanderBorder_MouseDown(object sender, MouseButtonEventArgs e)
{
if (CommonTasksExpanded)
{
GridLengthAnimation gla = new GridLengthAnimation();
gla.From = new GridLength(CommonTasksContentDef.ActualHeight);
gla.To = new GridLength(0);
gla.Duration = new Duration(new TimeSpan(1000000));
CommonTasksContentDef.BeginAnimation(RowDefinition.HeightProperty, gla);
CommonTasksExpanded = false;
CommonTasksExpanderBorder.CornerRadius = new CornerRadius(3, 3, 3, 3);
Double newSize = LeftContentGrid.ActualHeight;
newSize = NewSizeForExpansion(newSize,0);
}
else
{
Double newSize = LeftContentGrid.ActualHeight;
newSize = NewSizeForExpansion(newSize,1);
GridLengthAnimation gla = new GridLengthAnimation();
gla.From = new GridLength(0);
gla.To = new GridLength(newSize, GridUnitType.Star);
gla.Duration = new Duration(new TimeSpan(1000000));
CommonTasksContentDef.BeginAnimation(RowDefinition.HeightProperty, gla);
CommonTasksExpanded = true;
CommonTasksExpanderBorder.CornerRadius = new CornerRadius(3, 3, 0, 0);
}
}