private static TimedTextElement BuildTimedTextElements(TimedTextElementBase element, RegionElement region)
{
TimedTextElement timedTextElement = CreateTimedTextElement(element, region);
foreach (TimedTextElementBase c in element.Children)
{
TimedTextElement child = BuildTimedTextElements(c, region);
if (child is TimedTextAnimation)
{
#if HACK_XAMLTYPEINFO
var children = timedTextElement.Animations as MediaMarkerCollection <TimedTextAnimation>;
#else
var children = timedTextElement.Animations;
#endif
children.Add((TimedTextAnimation)child);
}
else if (timedTextElement is CaptionElement && child is CaptionElement)
{
#if HACK_XAMLTYPEINFO
var children = timedTextElement.Children as MediaMarkerCollection <TimedTextElement>;
#else
var children = timedTextElement.Children;
#endif
((CaptionElement)child).Index = children.Count;
children.Add((CaptionElement)child);
}
}
return(timedTextElement);
}
private static TtElement BuildDocument(XDocument xml, TimeSpan timeOffset, TimeSpan defaultEndTime)
{
TtElement parsetree = null;
try
{
parsetree = (TtElement)TimedTextElementBase.Parse(xml.Root);
}
catch (TimedTextException) { }
if (parsetree == null)
{
throw new TimedTextException("No Parse tree returned");
}
if (!parsetree.Valid())
{
throw new TimedTextException("Document is Well formed XML, but invalid Timed Text");
}
var startTime = new TimeCode(timeOffset, TimeExpression.CurrentSmpteFrameRate);
var endTime = new TimeCode(defaultEndTime, TimeExpression.CurrentSmpteFrameRate);
parsetree.ComputeTimeIntervals(TimeContainer.Par, startTime, endTime);
return(parsetree);
}
private static TimedTextElement CreateTimedTextElement(TimedTextElementBase element, RegionElement region)
{
var captionElement = element is SetElement
? (TimedTextElement)BuildCaptionAnimationElement(element)
: new CaptionElement();
var endTime = element.End.TotalSeconds >= TimeSpan.MaxValue.TotalSeconds
? TimeSpan.MaxValue
: TimeSpan.FromSeconds(element.End.TotalSeconds);
captionElement.End = endTime;
captionElement.Begin = TimeSpan.FromSeconds(element.Begin.TotalSeconds);
if (element is BrElement)
{
captionElement.CaptionElementType = TimedTextElementType.LineBreak;
}
else if (element is AnonymousSpanElement)
{
var span = element as AnonymousSpanElement;
captionElement.CaptionElementType = TimedTextElementType.Text;
captionElement.Content = HttpUtility.HtmlDecode(span.Text);
captionElement.Style = TimedTextStyleParser.MapStyle(element, region);
}
else if (!(element is SetElement))
{
captionElement.CaptionElementType = TimedTextElementType.Container;
captionElement.Style = TimedTextStyleParser.MapStyle(element, region);
}
return(captionElement);
}
private static void BuildCaptions(TimedTextElementBase timedTextElement, IDictionary <string, RegionElement> regionElementsHash, IDictionary <string, CaptionRegion> captionRegionsHash)
{
var pElement = timedTextElement as PElement;
if (pElement != null)
{
// region inheritence per spec: http://www.w3.org/TR/ttaf1-dfxp/#semantics-region-layout-step-1
string regionName =
GetInheritedAttribute(timedTextElement, "region") ??
GetDescendentAttribute(timedTextElement, "region") ??
RegionElement.DefaultRegionName ??
string.Empty;
RegionElement regionElement;
if (regionElementsHash.TryGetValue(regionName, out regionElement))
{
var captionElement = MapToCaption(pElement, regionElement);
CaptionRegion captionRegion;
if (captionRegionsHash.TryGetValue(regionName, out captionRegion))
{
captionElement.Index = captionRegion.Children.Count;
captionRegion.Children.Add(captionElement);
}
}
}
else if (timedTextElement.Children != null)
{
timedTextElement.Children
.Cast <TimedTextElementBase>()
.ForEach(i => BuildCaptions(i, regionElementsHash, captionRegionsHash));
}
}
private static void BuildCaptions(TimedTextElementBase timedTextElement, IDictionary<string, RegionElement> regionElementsHash, IDictionary<string, CaptionRegion> captionRegionsHash)
{
var pElement = timedTextElement as PElement;
if (pElement != null)
{
var regionNameAttribute = pElement.Attributes.FirstOrDefault(i => i.LocalName == "region");
var regionName = regionNameAttribute != null ? regionNameAttribute.Value : string.Empty;
RegionElement regionElement;
if (regionElementsHash.TryGetValue(regionName, out regionElement))
{
var captionElement = MapToCaption(pElement, regionElement);
CaptionRegion captionRegion;
if (captionRegionsHash.TryGetValue(regionName, out captionRegion))
{
captionElement.Index = captionRegion.Children.Count;
captionRegion.Children.Add(captionElement);
}
}
}
else if (timedTextElement.Children != null)
{
timedTextElement.Children
.Cast<TimedTextElementBase>()
.ForEach(i => BuildCaptions(i, regionElementsHash, captionRegionsHash));
}
}
private static TimedTextAnimation BuildCaptionAnimationElement(TimedTextElementBase element)
{
var propertyName = element.Attributes
.Where(i => TimedTextStyleParser.IsValidAnimationPropertyName(i.LocalName))
.Select(i => i.LocalName)
.FirstOrDefault();
return(!propertyName.IsNullOrWhiteSpace()
? new TimedTextAnimation
{
CaptionElementType = TimedTextElementType.Animation,
PropertyName = propertyName,
Style = TimedTextStyleParser.MapStyle(element, null)
}
: null);
}
private static TimedTextAnimation BuildCaptionAnimationElement(TimedTextElementBase element)
{
var propertyName = element.Attributes
.Where(i => TimedTextStyleParser.IsValidAnimationPropertyName(i.LocalName))
.Select(i => i.LocalName)
.FirstOrDefault();
return !propertyName.IsNullOrWhiteSpace()
? new TimedTextAnimation
{
CaptionElementType = TimedTextElementType.Animation,
PropertyName = propertyName,
Style = TimedTextStyleParser.MapStyle(element, null)
}
: null;
}
internal static bool UnitTests()
{
#region string preamble
string preamble = @"<tt xml:lang =''
ttp:profile='http://www.w3.org/2006/10/ttaf1#profile-dfxp'
xmlns='http://www.w3.org/2006/10/ttaf1'
xmlns:ttm='http://www.w3.org/2006/10/ttaf1#metadata'
xmlns:ttp='http://www.w3.org/2006/10/ttaf1#parameter'
xmlns:tts='http://www.w3.org/2006/10/ttaf1#style' >
<head>
<ttm:title>Unit test</ttm:title>
</head>
";
#endregion
XElement ttData1 = XElement.Parse(preamble + @"
<body timeContainer ='par' >
<div timeContainer ='seq' end='5s'>
<p dur='2s'>One<span begin='0.5s' dur='1s' > and a bit</span></p>
<p dur='2s'>Two</p>
</div>
<div timeContainer ='seq' dur='5s'>
<p begin='0.1s' dur='2s'>One</p>
<p dur='2s'>Two</p>
</div>
</body>
</tt>
");
TimedTextElementBase tt1 = TimedTextElementBase.Parse(ttData1);
bool pass = tt1.Valid();
TimeCode startTime = new TimeCode("00:00:00:00", TimeExpression.CurrentSmpteFrameRate);
TimeCode endTime = new TimeCode("01:00:00:00", TimeExpression.CurrentSmpteFrameRate);
tt1.ComputeTimeIntervals(TimeContainer.Par, startTime, endTime);
ReadOnlyCollection <TimeCode> ev = tt1.Events;
// some basic tests, try to come up with some more devilish ones.
pass &= ev.Count == 10;
return(pass);
}
private static TimedTextElement BuildTimedTextElements(TimedTextElementBase element, RegionElement region)
{
TimedTextElement timedTextElement = CreateTimedTextElement(element, region);
foreach (TimedTextElementBase c in element.Children)
{
TimedTextElement child = BuildTimedTextElements(c, region);
if (child is TimedTextAnimation)
{
timedTextElement.Animations.Add((TimedTextAnimation)child);
}
else if (timedTextElement is CaptionElement && child is CaptionElement)
{
((CaptionElement)child).Index = timedTextElement.Children.Count;
timedTextElement.Children.Add((CaptionElement)child);
}
}
return(timedTextElement);
}
internal static Style MapStyle(TimedTextElementBase styleElement, RegionElement region)
{
var style = new Style();
if (styleElement.Id != null)
{
style.Id = styleElement.Id;
}
var backgroundColor =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.BackgroundColor.LocalName, region)
as Color?;
style.BackgroundColor = backgroundColor.GetValueOrDefault(DefaultStyle.BackgroundColor);
var color =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Color.LocalName, region) as Color?;
style.Color = color.GetValueOrDefault(DefaultStyle.Color);
var extent =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Extent.LocalName, region) as
TimedTextExtent;
if (extent != null)
{
Length height = new Length {
Value = extent.Height, Unit = FromUnit(extent.UnitMeasureVertical)
};
Length width = new Length {
Value = extent.Width, Unit = FromUnit(extent.UnitMeasureHorizontal)
};
style.Extent = new Extent {
Height = height, Width = width
};
}
else
{
style.Extent = DefaultStyle.Extent;
}
var fontFamily =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.FontFamily.LocalName, region) as
string;
style.FontFamily = !fontFamily.IsNullOrWhiteSpace()
? new FontFamily(fontFamily)
: DefaultStyle.FontFamily;
object oFontSize = styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.FontSize.LocalName,
region);
var fontSize = oFontSize as string;
if (!fontSize.IsNullOrWhiteSpace())
{
var parsedFontSize = GetNumberPair(fontSize);
style.FontSize = new Length
{
Unit = FromUnit(parsedFontSize.UnitMeasureHorizontal),
Value = parsedFontSize.First
};
}
var fontStyle =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.FontStyle.LocalName, region) as
FontStyleAttributeValue?;
style.FontStyle = fontStyle.HasValue &&
(fontStyle.Value == FontStyleAttributeValue.Italic ||
fontStyle.Value == FontStyleAttributeValue.Oblique ||
fontStyle.Value == FontStyleAttributeValue.ReverseOblique)
? FontStyles.Italic
: DefaultStyle.FontStyle;
var fontWeight =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.FontWeight.LocalName, region) as
FontWeightAttributeValue?;
style.FontWeight = fontWeight.HasValue && fontWeight.Value == FontWeightAttributeValue.Bold
? FontWeights.Bold
: DefaultStyle.FontWeight;
var lineHeight =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.LineHeight.LocalName, region) as
LineHeight;
style.LineHeight = lineHeight != null && !(lineHeight is NormalHeight)
? new Length
{
Unit = FromUnit(lineHeight.UnitMeasureVertical),
Value = lineHeight.Height
}
: null;
var textOutline = styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.TextOutline.LocalName, region) as TextOutline;
style.OutlineBlur = new Length
{
Unit = FromUnit(textOutline.UnitMeasureBlur),
Value = textOutline.Blur
};
style.OutlineWidth = new Length
{
Unit = FromUnit(textOutline.UnitMeasureWidth),
Value = textOutline.Width
};
style.OutlineColor = textOutline.StrokeColor;
var opacity =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Opacity.LocalName, region) as
double?;
style.Opacity = opacity.HasValue
? opacity.Value
: DefaultStyle.Opacity;
var origin =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Origin.LocalName, region) as
TimedTextOrigin;
style.Origin = origin != null
? new Origin
{
Left = new Length
{
Unit =
FromUnit(origin.UnitMeasureHorizontal),
Value = origin.X
},
Top = new Length
{
Unit = FromUnit(origin.UnitMeasureVertical),
Value = origin.Y
}
}
: DefaultStyle.Origin;
var overflow =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Overflow.LocalName, region) as
string;
Overflow parsedOverflow;
style.Overflow = overflow.EnumTryParse(true, out parsedOverflow)
? parsedOverflow
: DefaultStyle.Overflow;
var padding =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Padding.LocalName, region) as
PaddingThickness;
style.Padding = padding != null
? new Padding
{
Left = new Length
{
Unit = FromUnit(padding.WidthStartUnit),
Value = padding.WidthStart
},
Right = new Length
{
Unit = FromUnit(padding.WidthEndUnit),
Value = padding.WidthEnd
},
Top = new Length
{
Unit = FromUnit(padding.WidthBeforeUnit),
Value = padding.WidthBefore
},
Bottom = new Length
{
Unit = FromUnit(padding.WidthAfterUnit),
Value = padding.WidthAfter
}
}
: DefaultStyle.Padding;
var textAlign =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.TextAlign.LocalName, region) as
string;
TextAlignment parsedTextAlign;
if (textAlign == "start")
{
textAlign = "left";
}
else if (textAlign == "end")
{
textAlign = "right";
}
style.TextAlign = textAlign.EnumTryParse(true, out parsedTextAlign)
? parsedTextAlign
: DefaultStyle.TextAlign;
var direction =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Direction.LocalName, region) as
string;
style.Direction = direction == "rtl" ? Direction.RightToLeft : Direction.LeftToRight;
var displayAlign =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.DisplayAlign.LocalName, region) as
string;
DisplayAlign parsedDisplayAlign;
style.DisplayAlign = displayAlign.EnumTryParse(true, out parsedDisplayAlign)
? parsedDisplayAlign
: DefaultStyle.DisplayAlign;
var visibility =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Visibility.LocalName, region) as
string;
style.Visibility = !visibility.IsNullOrWhiteSpace() &&
visibility.Equals("hidden", StringComparison.CurrentCultureIgnoreCase)
? Visibility.Collapsed
: DefaultStyle.Visibility;
var display =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.Display.LocalName, region) as
string;
style.Display = !display.IsNullOrWhiteSpace() &&
display.Equals("none", StringComparison.CurrentCultureIgnoreCase)
? Visibility.Collapsed
: DefaultStyle.Display;
var wrapOption =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.WrapOption.LocalName, region) as
string;
TextWrapping parsedWrapOption;
style.WrapOption = wrapOption.EnumTryParse(true, out parsedWrapOption)
? parsedWrapOption
: DefaultStyle.WrapOption;
var showBackground =
styleElement.GetComputedStyle(TimedTextVocabulary.Attributes.Styling.ShowBackground.LocalName, region)
as string;
ShowBackground parsedShowBackground;
style.ShowBackground = showBackground.EnumTryParse(true, out parsedShowBackground)
? parsedShowBackground
: DefaultStyle.ShowBackground;
object zindex = styleElement.GetComputedStyle("zIndex", null);
try
{
if (zindex is string == false)
{
var tmp = (double)zindex;
style.ZIndex = (int)tmp;
}
else
{
style.ZIndex = 0;
}
}
catch
{
style.ZIndex = 0;
}
return(style);
}
private static TimedTextElement CreateTimedTextElement(TimedTextElementBase element, RegionElement region)
{
var captionElement = element is SetElement
? (TimedTextElement)BuildCaptionAnimationElement(element)
: new CaptionElement();
var endTime = element.End.TotalSeconds >= TimeSpan.MaxValue.TotalSeconds
? TimeSpan.MaxValue
: TimeSpan.FromSeconds(element.End.TotalSeconds);
captionElement.End = endTime;
captionElement.Begin = TimeSpan.FromSeconds(element.Begin.TotalSeconds);
if (element is BrElement)
{
captionElement.CaptionElementType = TimedTextElementType.LineBreak;
}
else if (element is AnonymousSpanElement)
{
var span = element as AnonymousSpanElement;
captionElement.CaptionElementType = TimedTextElementType.Text;
captionElement.Content = HttpUtility.HtmlDecode(span.Text);
captionElement.Style = TimedTextStyleParser.MapStyle(element, region);
}
else if (!(element is SetElement))
{
captionElement.CaptionElementType = TimedTextElementType.Container;
captionElement.Style = TimedTextStyleParser.MapStyle(element, region);
}
return captionElement;
}
private static TimedTextElement BuildTimedTextElements(TimedTextElementBase element, RegionElement region)
{
TimedTextElement timedTextElement = CreateTimedTextElement(element, region);
foreach (TimedTextElementBase c in element.Children)
{
TimedTextElement child = BuildTimedTextElements(c, region);
if (child is TimedTextAnimation)
{
#if HACK_XAMLTYPEINFO
var children = timedTextElement.Animations as MediaMarkerCollection<TimedTextAnimation>;
#else
var children = timedTextElement.Animations;
#endif
children.Add((TimedTextAnimation)child);
}
else if (timedTextElement is CaptionElement && child is CaptionElement)
{
#if HACK_XAMLTYPEINFO
var children = timedTextElement.Children as MediaMarkerCollection<TimedTextElement>;
#else
var children = timedTextElement.Children;
#endif
((CaptionElement)child).Index = children.Count;
children.Add((CaptionElement)child);
}
}
return timedTextElement;
}
private static void BuildCaptions(TimedTextElementBase timedTextElement, IDictionary<string, RegionElement> regionElementsHash, IDictionary<string, CaptionRegion> captionRegionsHash)
{
var pElement = timedTextElement as PElement;
if (pElement != null)
{
// region inheritence per spec: http://www.w3.org/TR/ttaf1-dfxp/#semantics-region-layout-step-1
string regionName =
GetInheritedAttribute(timedTextElement, "region") ??
GetDescendentAttribute(timedTextElement, "region") ??
RegionElement.DefaultRegionName ??
string.Empty;
RegionElement regionElement;
if (regionElementsHash.TryGetValue(regionName, out regionElement))
{
var captionElement = MapToCaption(pElement, regionElement);
CaptionRegion captionRegion;
if (captionRegionsHash.TryGetValue(regionName, out captionRegion))
{
#if HACK_XAMLTYPEINFO
var children = captionRegion.Children as MediaMarkerCollection<TimedTextElement>;
#else
var children = captionRegion.Children;
#endif
captionElement.Index = children.Count;
children.Add(captionElement);
}
}
}
else if (timedTextElement.Children != null)
{
timedTextElement.Children
.Cast<TimedTextElementBase>()
.ForEach(i => BuildCaptions(i, regionElementsHash, captionRegionsHash));
}
}
private static TimedTextElement BuildTimedTextElements(TimedTextElementBase element, RegionElement region)
{
TimedTextElement timedTextElement = CreateTimedTextElement(element, region);
foreach (TimedTextElementBase c in element.Children)
{
TimedTextElement child = BuildTimedTextElements(c, region);
if (child is TimedTextAnimation)
{
timedTextElement.Animations.Add((TimedTextAnimation)child);
}
else if (timedTextElement is CaptionElement && child is CaptionElement)
{
((CaptionElement)child).Index = timedTextElement.Children.Count;
timedTextElement.Children.Add((CaptionElement)child);
}
}
return timedTextElement;
}
