/// <summary>
/// Apply the font style
/// </summary>
/// <param name="captionElement">the caption element</param>
private static void ApplyFontStyle(TT.TimedTextElement captionElement)
{
var outlineWidth = 1.0;
if (ClosedCaptionProperties.FontSize != ClosedCaptionSize.Default)
{
outlineWidth = GetComputedFontPercent(ClosedCaptionProperties.FontSize);
}
var outlineColor = Colors.Black;
if (ClosedCaptionProperties.FontColor != ClosedCaptionColor.Default)
{
outlineColor = Color.FromArgb(255, 0, 0, 0);
}
switch (ClosedCaptionProperties.FontEffect)
{
case ClosedCaptionEdgeEffect.Default:
captionElement.Style.TextStyle = TT.TextStyle.Default;
// Todo: look at code for calculation of OutlineWidth and OutlineBlur
captionElement.Style.OutlineWidth = new TT.Length { Value = outlineWidth, Unit = TT.LengthUnit.Pixel };
captionElement.Style.OutlineColor = outlineColor;
break;
case ClosedCaptionEdgeEffect.Depressed:
captionElement.Style.TextStyle = TT.TextStyle.DepressedEdge;
captionElement.Style.OutlineColor = outlineColor;
captionElement.Style.OutlineWidth = new TT.Length { Value = outlineWidth, Unit = TT.LengthUnit.Pixel };
break;
case ClosedCaptionEdgeEffect.DropShadow:
captionElement.Style.TextStyle = TT.TextStyle.DropShadow;
// Todo: look at code for calculation of OutlineWidth and OutlineBlur
captionElement.Style.OutlineColor = outlineColor;
captionElement.Style.OutlineWidth = new TT.Length { Value = outlineWidth, Unit = TT.LengthUnit.Pixel };
break;
case ClosedCaptionEdgeEffect.None:
captionElement.Style.TextStyle = TT.TextStyle.None;
break;
case ClosedCaptionEdgeEffect.Uniform:
captionElement.Style.TextStyle = TT.TextStyle.Outline;
captionElement.Style.OutlineWidth = new TT.Length { Value = outlineWidth, Unit = TT.LengthUnit.Pixel };
captionElement.Style.OutlineColor = outlineColor;
break;
case ClosedCaptionEdgeEffect.Raised:
captionElement.Style.TextStyle = TT.TextStyle.RaisedEdge;
captionElement.Style.OutlineWidth = new TT.Length { Value = outlineWidth, Unit = TT.LengthUnit.Pixel };
captionElement.Style.OutlineColor = outlineColor;
break;
}
}
/// <summary>
/// Update the caption elements when the captions are parsed
/// </summary>
/// <param name="sender">the sender</param>
/// <param name="e">the caption parsed event arguments</param>
private void OnCaptionParsed(object sender, TT.CaptionParsedEventArgs e)
{
var captionRegion = e.CaptionMarker as TT.CaptionRegion;
UpdateElement(captionRegion, 0);
}
/// <summary>
/// Recursively update the caption elements
/// </summary>
/// <param name="captionElement">the caption element</param>
/// <param name="level">the 0-based level of the caption element</param>
private static void UpdateElement(
TT.TimedTextElement captionElement,
uint level)
{
if (level == 0)
{
if (ClosedCaptionProperties.RegionColor != ClosedCaptionColor.Default || ClosedCaptionProperties.RegionOpacity != ClosedCaptionOpacity.Default)
{
captionElement.Style.BackgroundColor = GetComputedColor(ClosedCaptionProperties.ComputedRegionColor, ClosedCaptionProperties.RegionOpacity);
}
}
else if (level == 1)
{
if (ClosedCaptionProperties.BackgroundColor != ClosedCaptionColor.Default || ClosedCaptionProperties.BackgroundOpacity != ClosedCaptionOpacity.Default)
{
captionElement.Style.BackgroundColor = GetComputedColor(ClosedCaptionProperties.ComputedBackgroundColor, ClosedCaptionProperties.BackgroundOpacity);
}
}
if (ClosedCaptionProperties.FontColor != ClosedCaptionColor.Default || ClosedCaptionProperties.FontOpacity != ClosedCaptionOpacity.Default)
{
captionElement.Style.Color = GetComputedColor(ClosedCaptionProperties.ComputedFontColor, ClosedCaptionProperties.FontOpacity);
}
if (ClosedCaptionProperties.FontSize != ClosedCaptionSize.Default)
{
captionElement.Style.FontSize = new TT.Length
{
Unit = captionElement.Style.FontSize.Unit,
Value = GetComputedFontPercent(ClosedCaptionProperties.FontSize) * captionElement.Style.FontSize.Value
};
}
var fontFamily = GetFontFamily();
if (fontFamily != null)
{
captionElement.Style.FontFamily = fontFamily;
#if WINDOWS_PHONE
if (userSettings.FontFamily == FontFamily.Cursive)
{
captionElement.Style.FontStyle = System.Windows.FontStyles.Italic;
}
#endif
}
ApplyFontStyle(captionElement);
var children = captionElement.Children as TT.MediaMarkerCollection<TT.TimedTextElement>;
if (children != null)
{
foreach (var child in children)
{
UpdateElement(child, level + 1);
}
}
}