private void RenderElementRecurse(Panel parent, ref Panel p, CaptionElement element, ref double offset, TextAlignment align)
{
if (element.IsActiveAtPosition(_mediaPosition) && element.CurrentStyle.Display == Visibility.Visible)
{
if (element.CaptionElementType == TimedTextElementType.Text)
{
var text = element.Content != null?element.Content.ToString() : string.Empty;
offset = WrapElement(parent, ref p, offset, text, element, align);
}
else if (element.CaptionElementType == TimedTextElementType.Container)
{
#if HACK_XAMLTYPEINFO
var children = element.Children as MediaMarkerCollection <TimedTextElement>;
#else
var children = element.Children;
#endif
foreach (CaptionElement child in children)
{
RenderElementRecurse(parent, ref p, child, ref offset, align);
}
}
else if (element.CaptionElementType == TimedTextElementType.LineBreak)
{
p = NewPanel(parent, ref offset, element, align);
}
}
}
private Panel NewPanel(Panel parent, ref double offset, CaptionElement element, TextAlignment align)
{
var p = new StackPanel
{
Orientation = Orientation.Horizontal
};
switch (align)
{
case TextAlignment.Center:
p.HorizontalAlignment = HorizontalAlignment.Center;
break;
case TextAlignment.Right:
p.HorizontalAlignment = HorizontalAlignment.Right;
break;
case TextAlignment.Left:
p.HorizontalAlignment = HorizontalAlignment.Left;
break;
case TextAlignment.Justify:
p.HorizontalAlignment = HorizontalAlignment.Stretch;
break;
}
parent.Children.Add(p);
offset = 0;
return(p);
}
private Panel NewPanel(Panel parent, ref double offset, CaptionElement element, TextAlignment align)
{
var p = new StackPanel
{
Orientation = Orientation.Horizontal
};
switch (align)
{
case TextAlignment.Center:
p.HorizontalAlignment = HorizontalAlignment.Center;
break;
case TextAlignment.Right:
p.HorizontalAlignment = HorizontalAlignment.Right;
break;
case TextAlignment.Left:
p.HorizontalAlignment = HorizontalAlignment.Left;
break;
case TextAlignment.Justify:
p.HorizontalAlignment = HorizontalAlignment.Stretch;
break;
}
parent.Children.Add(p);
offset = 0;
return p;
}
private double WrapElement(Panel parent, ref Panel p, double offset, string text, CaptionElement element, TextAlignment align, bool directionApplied = false)
{
if (text == null || text == "") return offset;
var effectiveSize = this.GetEffectiveSize();
var style = element.CurrentStyle;
var panelSize = style.Extent.ToPixelSize(effectiveSize);
double panelWidth = panelSize.Width;
double panelHeight = panelSize.Height;
if (style.Direction == FlowDirection.RightToLeft && !directionApplied)
{
text = new string(text.ToCharArray().Reverse().ToArray());
}
double height = style.FontSize.Unit == LengthUnit.PixelProportional || style.FontSize.Unit == LengthUnit.Cell ? effectiveSize.Height : panelHeight;
TextBlock textblock = GetStyledTextblock(style, panelWidth, height, false);
SetContent(textblock, text);
Border border = new Border();
border.Background = GetCachedBrush(style.BackgroundColor);
FrameworkElement contentElement;
double outlineWidth = style.OutlineWidth.ToPixelLength(effectiveSize.Height);
if (outlineWidth > 0)
{
switch (style.TextStyle)
{
case TextStyle.Default:
contentElement = AddOutlineTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.DepressedEdge:
contentElement = AddDepressedEdgeTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.DropShadow:
contentElement = AddDropShadowTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.None:
contentElement = textblock;
break;
case TextStyle.Outline:
contentElement = AddOutlineTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.RaisedEdge:
contentElement = AddRaisedEdgeTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
default:
contentElement = AddOutlineTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
}
}
else
{
contentElement = textblock;
}
contentElement.Opacity = System.Convert.ToDouble(style.Color.A) / 255.0;
border.Opacity = System.Convert.ToDouble(style.Color.A) / 255.0;
border.Child = contentElement;
p.Children.Add(border);
string head = text;
string tail = string.Empty;
double elementWidth = textblock.GetEffectiveWidth();
if (offset + elementWidth > panelSize.Width && style.WrapOption == TextWrapping.Wrap)
{
if (text.Length > 0 && text.IndexOf(' ') < 0)
{
if (offset != 0 && elementWidth < panelSize.Width)
{
p.Children.Remove(border);
p = NewPanel(parent, ref offset, element, align);
return WrapElement(parent, ref p, 0, text, element, align, true);
}
int idx = text.Length - 1;
head = text.Substring(0, idx);
tail = text.Substring(idx);
SetAllContent(contentElement, head);
while (offset + textblock.GetEffectiveWidth() > panelSize.Width)
{
idx--;
head = text.Substring(0, idx);
tail = text.Substring(idx);
SetAllContent(contentElement, head);
p.UpdateLayout();
}
p = NewPanel(parent, ref offset, element, align);
return WrapElement(parent, ref p, offset, tail, element, align, true);
}
while (offset + textblock.GetEffectiveWidth() > panelSize.Width)
{
int idx = head.LastIndexOf(' ');
if (idx < 0)
{
SetAllContent(contentElement, text);
return 0;
}
else
{
tail = text.Substring(idx + 1);
head = text.Substring(0, idx);
}
SetAllContent(contentElement, head);
}
p = NewPanel(parent, ref offset, element, align);
return WrapElement(parent, ref p, offset, tail, element, align, true);
}
else
{
offset += elementWidth;
return offset;
}
}
private void RenderElementRecurse(Panel parent, ref Panel p, CaptionElement element, ref double offset, TextAlignment align)
{
if (element.IsActiveAtPosition(_mediaPosition) && element.CurrentStyle.Display == Visibility.Visible)
{
if (element.CaptionElementType == TimedTextElementType.Text)
{
var text = element.Content != null ? element.Content.ToString() : string.Empty;
offset = WrapElement(parent, ref p, offset, text, element, align);
}
else if (element.CaptionElementType == TimedTextElementType.Container)
{
#if HACK_XAMLTYPEINFO
var children = element.Children as MediaMarkerCollection<TimedTextElement>;
#else
var children = element.Children;
#endif
foreach (CaptionElement child in children)
{
RenderElementRecurse(parent, ref p, child, ref offset, align);
}
}
else if (element.CaptionElementType == TimedTextElementType.LineBreak)
{
p = NewPanel(parent, ref offset, element, align);
}
}
}
private UIElement RenderElement(CaptionElement element)
{
Panel parent = null;
UIElement result = null;
try
{
parent = new StackPanel()
{
HorizontalAlignment = HorizontalAlignment.Center
};
var bgImage = element.CurrentStyle.BackgroundImage;
if (!string.IsNullOrEmpty(bgImage))
{
var border = new Border() { Background = GetCachedBrush(element.CurrentStyle.BackgroundColor) };
border.Child = parent;
result = border;
SetBackgroundImageAsync(bgImage, parent, element.CurrentStyle.BackgroundImageHorizontal, element.CurrentStyle.BackgroundImageVertical);
}
else
{
result = parent;
parent.Background = GetCachedBrush(element.CurrentStyle.BackgroundColor);
}
if (element.CurrentStyle.IsOriginSpecified || element.CurrentStyle.IsExtentSpecified)
{
// set position and size (origin and extent)
var width = this.GetEffectiveWidth();
var height = this.GetEffectiveHeight();
if (element.CurrentStyle.IsOriginSpecified)
{
var origin = element.CurrentStyle.Origin;
parent.Margin = new Thickness
{
Left = origin.Left.ToPixelLength(width),
Top = origin.Top.ToPixelLength(height)
};
}
if (element.CurrentStyle.IsExtentSpecified)
{
var extent = CaptionRegion.CurrentStyle.Extent;
var extentWidth = extent.Width.ToPixelLength(width);
var extentHeight = extent.Height.ToPixelLength(height);
if (extentWidth > 0) parent.Width = extentWidth;
if (extentHeight > 0) parent.Height = extentHeight;
}
}
var textAlignment = element.CurrentStyle.TextAlign;
double offset = 0;
Panel p = NewPanel(parent, ref offset, element, textAlignment);
RenderElementRecurse(parent, ref p, element, ref offset, textAlignment);
#if !WINDOWS_PHONE && !SILVERLIGHT3 && NOTUSED
foreach (StackPanel stack in parent.Children)
{
double baseline = 0;
foreach (Border b in stack.Children)
{
TextBlock tb = b.Child as TextBlock;
if (tb != null && tb.BaselineOffset > baseline)
{
baseline = tb.ActualHeight - tb.BaselineOffset;
}
}
foreach (Border b in stack.Children)
{
TextBlock tb = b.Child as TextBlock;
if (tb != null)
{
tb.Margin = new Thickness(0, 0, 0, baseline - (tb.ActualHeight - tb.BaselineOffset));
}
}
}
#endif
}
catch (Exception)
{
//TODO: Respond to errors
}
return result;
}
private double WrapElement(Panel parent, ref Panel p, double offset, string text, CaptionElement element, TextAlignment align, bool directionApplied = false)
{
if (text == null || text == "")
{
return(offset);
}
var effectiveSize = this.GetEffectiveSize();
var style = element.CurrentStyle;
var panelSize = style.Extent.ToPixelSize(effectiveSize);
double panelWidth = panelSize.Width;
double panelHeight = panelSize.Height;
if (style.Direction == FlowDirection.RightToLeft && !directionApplied)
{
text = new string(text.ToCharArray().Reverse().ToArray());
}
double height = style.FontSize.Unit == LengthUnit.PixelProportional || style.FontSize.Unit == LengthUnit.Cell ? effectiveSize.Height : panelHeight;
TextBlock textblock = GetStyledTextblock(style, panelWidth, height, false);
SetContent(textblock, text);
Border border = new Border();
border.Background = GetCachedBrush(style.BackgroundColor);
FrameworkElement contentElement;
double outlineWidth = style.OutlineWidth.ToPixelLength(effectiveSize.Height);
if (outlineWidth > 0)
{
switch (style.TextStyle)
{
case TextStyle.Default:
contentElement = AddOutlineTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.DepressedEdge:
contentElement = AddDepressedEdgeTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.DropShadow:
contentElement = AddDropShadowTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.None:
contentElement = textblock;
break;
case TextStyle.Outline:
contentElement = AddOutlineTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
case TextStyle.RaisedEdge:
contentElement = AddRaisedEdgeTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
default:
contentElement = AddOutlineTextStyle(text, style, panelWidth, height, textblock, outlineWidth);
break;
}
}
else
{
contentElement = textblock;
}
contentElement.Opacity = System.Convert.ToDouble(style.Color.A) / 255.0;
border.Opacity = System.Convert.ToDouble(style.Color.A) / 255.0;
border.Child = contentElement;
p.Children.Add(border);
string head = text;
string tail = string.Empty;
double elementWidth = textblock.GetEffectiveWidth();
if (offset + elementWidth > panelSize.Width && style.WrapOption == TextWrapping.Wrap)
{
if (text.Length > 0 && text.IndexOf(' ') < 0)
{
if (offset != 0 && elementWidth < panelSize.Width)
{
p.Children.Remove(border);
p = NewPanel(parent, ref offset, element, align);
return(WrapElement(parent, ref p, 0, text, element, align, true));
}
int idx = text.Length - 1;
head = text.Substring(0, idx);
tail = text.Substring(idx);
SetAllContent(contentElement, head);
while (offset + textblock.GetEffectiveWidth() > panelSize.Width)
{
idx--;
head = text.Substring(0, idx);
tail = text.Substring(idx);
SetAllContent(contentElement, head);
p.UpdateLayout();
}
p = NewPanel(parent, ref offset, element, align);
return(WrapElement(parent, ref p, offset, tail, element, align, true));
}
while (offset + textblock.GetEffectiveWidth() > panelSize.Width)
{
int idx = head.LastIndexOf(' ');
if (idx < 0)
{
SetAllContent(contentElement, text);
return(0);
}
else
{
tail = text.Substring(idx + 1);
head = text.Substring(0, idx);
}
SetAllContent(contentElement, head);
}
p = NewPanel(parent, ref offset, element, align);
return(WrapElement(parent, ref p, offset, tail, element, align, true));
}
else
{
offset += elementWidth;
return(offset);
}
}
private UIElement RenderElement(CaptionElement element)
{
Panel parent = null;
UIElement result = null;
try
{
parent = new StackPanel()
{
HorizontalAlignment = HorizontalAlignment.Center
};
var bgImage = element.CurrentStyle.BackgroundImage;
if (!string.IsNullOrEmpty(bgImage))
{
var border = new Border()
{
Background = GetCachedBrush(element.CurrentStyle.BackgroundColor)
};
border.Child = parent;
result = border;
SetBackgroundImageAsync(bgImage, parent, element.CurrentStyle.BackgroundImageHorizontal, element.CurrentStyle.BackgroundImageVertical);
}
else
{
result = parent;
parent.Background = GetCachedBrush(element.CurrentStyle.BackgroundColor);
}
if (element.CurrentStyle.IsOriginSpecified || element.CurrentStyle.IsExtentSpecified)
{
// set position and size (origin and extent)
var width = this.GetEffectiveWidth();
var height = this.GetEffectiveHeight();
if (element.CurrentStyle.IsOriginSpecified)
{
var origin = element.CurrentStyle.Origin;
parent.Margin = new Thickness
{
Left = origin.Left.ToPixelLength(width),
Top = origin.Top.ToPixelLength(height)
};
}
if (element.CurrentStyle.IsExtentSpecified)
{
var extent = CaptionRegion.CurrentStyle.Extent;
var extentWidth = extent.Width.ToPixelLength(width);
var extentHeight = extent.Height.ToPixelLength(height);
if (extentWidth > 0)
{
parent.Width = extentWidth;
}
if (extentHeight > 0)
{
parent.Height = extentHeight;
}
}
}
var textAlignment = element.CurrentStyle.TextAlign;
double offset = 0;
Panel p = NewPanel(parent, ref offset, element, textAlignment);
RenderElementRecurse(parent, ref p, element, ref offset, textAlignment);
#if !WINDOWS_PHONE && !SILVERLIGHT3 && NOTUSED
foreach (StackPanel stack in parent.Children)
{
double baseline = 0;
foreach (Border b in stack.Children)
{
TextBlock tb = b.Child as TextBlock;
if (tb != null && tb.BaselineOffset > baseline)
{
baseline = tb.ActualHeight - tb.BaselineOffset;
}
}
foreach (Border b in stack.Children)
{
TextBlock tb = b.Child as TextBlock;
if (tb != null)
{
tb.Margin = new Thickness(0, 0, 0, baseline - (tb.ActualHeight - tb.BaselineOffset));
}
}
}
#endif
}
catch (Exception)
{
//TODO: Respond to errors
}
return(result);
}
