/// <summary>
/// AboutBox constructor
/// </summary>
public AboutBox()
{
InitializeComponent();
Loaded += AboutBox_Loaded;
Unloaded += AboutBox_Unloaded;
clickContext = this;
}
/// <summary>
/// Opens an AboutBox
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void OpenAboutBox(object sender, RoutedEventArgs e)
{
var aboutBox = new AboutBox { Owner = this };
aboutBox.Left = Left + (Width / 2 - aboutBox.Width / 2);
var regToolsHeight = (int)aboutBox.Height;
aboutBox.Height = 0;
int topStart = (int)(Top + Height) + 30;
aboutBox.Top = topStart;
var topFinal = (int)(Top + (Height / 2 - regToolsHeight / 2));
const int fullAnimationDuration = 300;
int heightAnimationDuration = (fullAnimationDuration * regToolsHeight / (topStart - topFinal));
var slideUp = new DoubleAnimation
{
From = topStart,
To = topFinal,
Duration = new Duration(TimeSpan.FromMilliseconds(fullAnimationDuration))
};
aboutBox.BeginAnimation(TopProperty, slideUp);
var scaleUp = new DoubleAnimation
{
From = 0,
To = regToolsHeight,
Duration = new Duration(TimeSpan.FromMilliseconds(heightAnimationDuration))
};
aboutBox.BeginAnimation(HeightProperty, scaleUp);
aboutBox.AnimateInnerBox();
aboutBox.ShowDialog();
}