void Advance()
{
alpha -= 0.01;
if (alpha < 0)
{
alpha = 0;
}
if (brush == null)
{
brush = new SolidColorBrush(Color.FromArgb(255, 255, 255, 255));
}
if (label == null)
{
label = FallingThings.MakeSimpleLabel(text, new Rect(0, 0, 0, 0), brush);
}
brush.Opacity = Math.Pow(alpha, 1.5);
label.Foreground = brush;
fontSize += fontGrow;
label.FontSize = fontSize;
Rect rRendered = new Rect(label.RenderSize);
label.SetValue(Canvas.LeftProperty, center.X - rRendered.Width / 2);
label.SetValue(Canvas.TopProperty, center.Y - rRendered.Height / 2);
}
private Label GetLabel()
{
if (brush == null)
{
brush = new SolidColorBrush(color);
}
if (label == null)
{
label = FallingThings.MakeSimpleLabel(text, boundsRect, brush);
if (doScroll)
{
label.FontSize = Math.Max(20, boundsRect.Height / 30);
label.Width = 10000;
}
else
{
label.FontSize = Math.Min(Math.Max(10, boundsRect.Width * 2 / text.Length),
Math.Max(10, boundsRect.Height / 20));
}
label.VerticalContentAlignment = VerticalAlignment.Bottom;
label.HorizontalContentAlignment = (doScroll) ? HorizontalAlignment.Left : HorizontalAlignment.Center;
label.SetValue(Canvas.LeftProperty, offset * boundsRect.Width);
}
renderedRect = new Rect(label.RenderSize);
if (doScroll)
{
offset -= 0.0015;
if (offset * boundsRect.Width < boundsRect.Left - 10000)
{
return(null);
}
label.SetValue(Canvas.LeftProperty, offset * boundsRect.Width + boundsRect.Left);
}
return(label);
}