private void RenderTextPath(SvgTextPathElement textPath, ref Point ctp,
double rotate, WpfTextPlacement placement)
{
if (textPath.ChildNodes == null || textPath.ChildNodes.Count == 0)
{
return;
}
SvgElement targetPath = textPath.ReferencedElement as SvgElement;
if (targetPath == null)
{
return;
}
PathGeometry pathGeometry = WpfRendering.CreateGeometry(targetPath, true) as PathGeometry;
if (pathGeometry == null)
{
return;
}
this.IsTextPath = true;
WpfTextOnPathDrawing pathDrawing = new WpfTextOnPathDrawing();
pathDrawing.BeginTextPath();
XmlNodeType nodeType = XmlNodeType.None;
foreach (XmlNode child in textPath.ChildNodes)
{
nodeType = child.NodeType;
if (nodeType == XmlNodeType.Text)
{
RenderTextPath(textPath, pathDrawing, GetText(textPath, child),
new Point(ctp.X, ctp.Y), rotate, placement);
}
else if (nodeType == XmlNodeType.Element)
{
string nodeName = child.Name;
if (String.Equals(nodeName, "tref"))
{
RenderTRefPath((SvgTRefElement)child, pathDrawing, ref ctp);
}
else if (String.Equals(nodeName, "tspan"))
{
RenderTSpanPath((SvgTSpanElement)child, pathDrawing, ref ctp);
}
}
}
WpfTextStringFormat stringFormat = GetTextStringFormat(_textElement);
ISvgAnimatedLength pathOffset = textPath.StartOffset;
SvgTextPathMethod pathMethod = (SvgTextPathMethod)textPath.Method.BaseVal;
SvgTextPathSpacing pathSpacing = (SvgTextPathSpacing)textPath.Spacing.BaseVal;
pathDrawing.DrawTextPath(_textContext, pathGeometry, pathOffset,
stringFormat.Alignment, pathMethod, pathSpacing);
pathDrawing.EndTextPath();
}
private void RenderTSpanPath(SvgTSpanElement element, WpfTextOnPathDrawing pathDrawing,
ref Point ctp)
{
WpfTextPlacement placement = GetCurrentTextPosition(element, ctp);
ctp = placement.Location;
double rotate = placement.Rotation;
if (!placement.HasPositions)
{
placement = null; // Render it useless.
}
string sBaselineShift = element.GetPropertyValue("baseline-shift").Trim();
double shiftBy = 0;
if (sBaselineShift.Length > 0)
{
SvgTextElement textElement = (SvgTextElement)element.SelectSingleNode("ancestor::svg:text",
element.OwnerDocument.NamespaceManager);
double textFontSize = GetComputedFontSize(textElement);
if (sBaselineShift.EndsWith("%", StringComparison.OrdinalIgnoreCase))
{
shiftBy = SvgNumber.ParseNumber(sBaselineShift.Substring(0,
sBaselineShift.Length - 1)) / 100f * textFontSize;
}
else if (sBaselineShift == "sub")
{
shiftBy = -0.6F * textFontSize;
}
else if (sBaselineShift == "super")
{
shiftBy = 0.6F * textFontSize;
}
else if (sBaselineShift == "baseline")
{
shiftBy = 0;
}
else
{
shiftBy = SvgNumber.ParseNumber(sBaselineShift);
}
}
foreach (XmlNode child in element.ChildNodes)
{
if (child.NodeType == XmlNodeType.Text)
{
ctp.Y -= shiftBy;
RenderTextPath(element, pathDrawing, GetText(element, child),
new Point(ctp.X, ctp.Y), rotate, placement);
ctp.Y += shiftBy;
}
}
}
private void RenderTextPath(SvgTextContentElement element, WpfTextOnPathDrawing pathDrawing,
string text, Point origin, double rotate, WpfTextPlacement placement)
{
if (string.IsNullOrWhiteSpace(text))
{
return;
}
double emSize = GetComputedFontSize(element);
FontFamily fontFamily = GetTextFontFamily(element, emSize);
FontStyle fontStyle = GetTextFontStyle(element);
FontWeight fontWeight = GetTextFontWeight(element);
FontStretch fontStretch = GetTextFontStretch(element);
WpfTextStringFormat stringFormat = GetTextStringFormat(element);
// Fix the use of Postscript fonts...
WpfFontFamilyVisitor fontFamilyVisitor = _context.FontFamilyVisitor;
if (!string.IsNullOrWhiteSpace(_actualFontName) && fontFamilyVisitor != null)
{
WpfFontFamilyInfo currentFamily = new WpfFontFamilyInfo(fontFamily, fontWeight,
fontStyle, fontStretch);
WpfFontFamilyInfo familyInfo = fontFamilyVisitor.Visit(_actualFontName,
currentFamily, _context);
if (familyInfo != null && !familyInfo.IsEmpty)
{
fontFamily = familyInfo.Family;
fontWeight = familyInfo.Weight;
fontStyle = familyInfo.Style;
fontStretch = familyInfo.Stretch;
}
}
WpfSvgPaint fillPaint = new WpfSvgPaint(_context, element, "fill");
Brush textBrush = fillPaint.GetBrush();
WpfSvgPaint strokePaint = new WpfSvgPaint(_context, element, "stroke");
Pen pen = strokePaint.GetPen();
TextDecorationCollection textDecors = GetTextDecoration(element);
TextAlignment alignment = stringFormat.Alignment;
pathDrawing.FontSize = emSize;
pathDrawing.FontFamily = fontFamily;
pathDrawing.FontWeight = fontWeight;
pathDrawing.FontStretch = fontStretch;
pathDrawing.Foreground = textBrush;
pathDrawing.AddTextPath(text, origin);
}
private void RenderTRefPath(SvgTRefElement element, WpfTextOnPathDrawing pathDrawing,
ref Point ctp)
{
WpfTextPlacement placement = GetCurrentTextPosition(element, ctp);
ctp = placement.Location;
double rotate = placement.Rotation;
if (!placement.HasPositions)
{
placement = null; // Render it useless.
}
this.RenderTextPath(element, pathDrawing, GetTRefText(element),
new Point(ctp.X, ctp.Y), rotate, placement);
}
private void RenderTextPath(SvgTextPathElement textPath, ref Point ctp,
double rotate, WpfTextPlacement placement)
{
if (textPath.ChildNodes == null || textPath.ChildNodes.Count == 0)
{
return;
}
SvgElement targetPath = textPath.ReferencedElement as SvgElement;
if (targetPath == null)
{
return;
}
PathGeometry pathGeometry = CreateGeometry(targetPath, true) as PathGeometry;
if (pathGeometry == null)
{
return;
}
this.IsTextPath = true;
WpfTextOnPathDrawing pathDrawing = new WpfTextOnPathDrawing();
pathDrawing.BeginTextPath();
XmlNodeType nodeType = XmlNodeType.None;
foreach (XmlNode child in textPath.ChildNodes)
{
nodeType = child.NodeType;
if (nodeType == XmlNodeType.Text)
{
RenderTextPath(textPath, pathDrawing, GetText(textPath, child),
new Point(ctp.X, ctp.Y), rotate, placement);
}
else if (nodeType == XmlNodeType.Element)
{
string nodeName = child.Name;
if (string.Equals(nodeName, "tref"))
{
RenderTRefPath((SvgTRefElement)child, pathDrawing, ref ctp);
}
else if (string.Equals(nodeName, "tspan"))
{
RenderTSpanPath((SvgTSpanElement)child, pathDrawing, ref ctp);
}
}
}
WpfTextStringFormat stringFormat = GetTextStringFormat(_textElement);
ISvgAnimatedLength pathOffset = textPath.StartOffset;
SvgTextPathMethod pathMethod = (SvgTextPathMethod)textPath.Method.BaseVal;
SvgTextPathSpacing pathSpacing = (SvgTextPathSpacing)textPath.Spacing.BaseVal;
pathDrawing.DrawTextPath(_textContext, pathGeometry, pathOffset,
stringFormat.Alignment, pathMethod, pathSpacing);
pathDrawing.EndTextPath();
}
private void RenderTextPath(SvgTextContentElement element, WpfTextOnPathDrawing pathDrawing,
string text, Point origin, double rotate, WpfTextPlacement placement)
{
if (String.IsNullOrEmpty(text))
{
return;
}
double emSize = GetComputedFontSize(element);
FontFamily fontFamily = GetTextFontFamily(element, emSize);
FontStyle fontStyle = GetTextFontStyle(element);
FontWeight fontWeight = GetTextFontWeight(element);
FontStretch fontStretch = GetTextFontStretch(element);
WpfTextStringFormat stringFormat = GetTextStringFormat(element);
// Fix the use of Postscript fonts...
WpfFontFamilyVisitor fontFamilyVisitor = _drawContext.FontFamilyVisitor;
if (!String.IsNullOrEmpty(_actualFontName) && fontFamilyVisitor != null)
{
WpfFontFamilyInfo currentFamily = new WpfFontFamilyInfo(fontFamily, fontWeight,
fontStyle, fontStretch);
WpfFontFamilyInfo familyInfo = fontFamilyVisitor.Visit(_actualFontName,
currentFamily, _drawContext);
if (familyInfo != null && !familyInfo.IsEmpty)
{
fontFamily = familyInfo.Family;
fontWeight = familyInfo.Weight;
fontStyle = familyInfo.Style;
fontStretch = familyInfo.Stretch;
}
}
WpfSvgPaint fillPaint = new WpfSvgPaint(_drawContext, element, "fill");
Brush textBrush = fillPaint.GetBrush();
WpfSvgPaint strokePaint = new WpfSvgPaint(_drawContext, element, "stroke");
Pen pen = strokePaint.GetPen();
TextDecorationCollection textDecors = GetTextDecoration(element);
TextAlignment alignment = stringFormat.Alignment;
pathDrawing.FontSize = emSize;
pathDrawing.FontFamily = fontFamily;
pathDrawing.FontWeight = fontWeight;
pathDrawing.FontStretch = fontStretch;
pathDrawing.Foreground = textBrush;
pathDrawing.AddTextPath(text, origin);
}
private void RenderTSpanPath(SvgTSpanElement element, WpfTextOnPathDrawing pathDrawing,
ref Point ctp)
{
WpfTextPlacement placement = GetCurrentTextPosition(element, ctp);
ctp = placement.Location;
double rotate = placement.Rotation;
if (!placement.HasPositions)
{
placement = null; // Render it useless.
}
string sBaselineShift = element.GetPropertyValue("baseline-shift").Trim();
double shiftBy = 0;
if (sBaselineShift.Length > 0)
{
SvgTextElement textElement = (SvgTextElement)element.SelectSingleNode("ancestor::svg:text",
element.OwnerDocument.NamespaceManager);
double textFontSize = GetComputedFontSize(textElement);
if (sBaselineShift.EndsWith("%"))
{
shiftBy = SvgNumber.ParseNumber(sBaselineShift.Substring(0,
sBaselineShift.Length - 1)) / 100f * textFontSize;
}
else if (sBaselineShift == "sub")
{
shiftBy = -0.6F * textFontSize;
}
else if (sBaselineShift == "super")
{
shiftBy = 0.6F * textFontSize;
}
else if (sBaselineShift == "baseline")
{
shiftBy = 0;
}
else
{
shiftBy = SvgNumber.ParseNumber(sBaselineShift);
}
}
foreach (XmlNode child in element.ChildNodes)
{
if (child.NodeType == XmlNodeType.Text)
{
ctp.Y -= shiftBy;
RenderTextPath(element, pathDrawing, GetText(element, child),
new Point(ctp.X, ctp.Y), rotate, placement);
ctp.Y += shiftBy;
}
}
}
private void RenderTRefPath(SvgTRefElement element, WpfTextOnPathDrawing pathDrawing,
ref Point ctp)
{
WpfTextPlacement placement = GetCurrentTextPosition(element, ctp);
ctp = placement.Location;
double rotate = placement.Rotation;
if (!placement.HasPositions)
{
placement = null; // Render it useless.
}
this.RenderTextPath(element, pathDrawing, GetTRefText(element),
new Point(ctp.X, ctp.Y), rotate, placement);
}
