public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
// This list may be too long to be useful...
switch (attribute.LocalName)
{
// Additional attributes
case "x":
x = null;
return;
case "y":
y = null;
return;
case "width":
width = null;
return;
case "height":
height = null;
return;
}
base.HandleAttributeChange(attribute);
}
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
switch (attribute.LocalName)
{
case "x":
_x = null;
return;
case "y":
_y = null;
return;
case "width":
_width = null;
return;
case "height":
_height = null;
return;
}
}
else if (attribute.NamespaceURI == SvgDocument.XLinkNamespace)
{
switch (attribute.LocalName)
{
case "href":
_instanceRoot = null;
break;
}
}
base.HandleAttributeChange(attribute);
}
public void RenderTextPath(DrawingContext dc, PathGeometry pathGeometry, TextAlignment pathAlignment)
{
if (_pathChars == null)
{
throw new InvalidOperationException();
}
if (_pathChars.Count == 0)
{
return;
}
//ISvgAnimatedLength pathOffset = _svgElement.StartOffset;
SvgTextPathMethod pathMethod = (SvgTextPathMethod)_textPathElement.Method.BaseVal;
SvgTextPathSpacing pathSpacing = (SvgTextPathSpacing)_textPathElement.Spacing.BaseVal;
ISvgAnimatedLength pathOffset = this.GetPathOffset();
if (pathOffset != null && pathOffset.AnimVal.Value < 0)
{
this.RenderEndAlignedText(dc, pathGeometry, pathOffset);
}
else
{
if (pathAlignment == TextAlignment.Right)
{
this.RenderEndAlignedText(dc, pathGeometry, pathOffset);
}
else
{
this.RenderStartAlignedText(dc, pathGeometry, pathOffset, pathAlignment);
}
}
}
private void addRoundedRect(GraphicsPath graphicsPath, RectangleF rect, float rx, float ry)
{
if (rx == 0F)
{
rx = ry;
}
else if (ry == 0F)
{
ry = rx;
}
rx = Math.Min(rect.Width / 2, rx);
ry = Math.Min(rect.Height / 2, ry);
float a = rect.X + rect.Width - rx;
graphicsPath.AddLine(rect.X + rx, rect.Y, a, rect.Y);
graphicsPath.AddArc(a - rx, rect.Y, rx * 2, ry * 2, 270, 90);
float right = rect.X + rect.Width; // rightmost X
float b = rect.Y + rect.Height - ry;
graphicsPath.AddLine(right, rect.Y + ry, right, b);
graphicsPath.AddArc(right - rx * 2, b - ry, rx * 2, ry * 2, 0, 90);
graphicsPath.AddLine(right - rx, rect.Y + rect.Height, rect.X + rx, rect.Y + rect.Height);
graphicsPath.AddArc(rect.X, b - ry, rx * 2, ry * 2, 90, 90);
graphicsPath.AddLine(rect.X, b, rect.X, rect.Y + ry);
graphicsPath.AddArc(rect.X, rect.Y, rx * 2, ry * 2, 180, 90);
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
switch (attribute.LocalName)
{
case "cx":
_cx = null;
Invalidate();
return;
case "cy":
_cy = null;
Invalidate();
return;
case "rx":
_rx = null;
Invalidate();
return;
case "ry":
_ry = null;
Invalidate();
return;
// Color.attrib, Paint.attrib
case "color":
case "fill":
case "fill-rule":
case "stroke":
case "stroke-dasharray":
case "stroke-dashoffset":
case "stroke-linecap":
case "stroke-linejoin":
case "stroke-miterlimit":
case "stroke-width":
// Opacity.attrib
case "opacity":
case "stroke-opacity":
case "fill-opacity":
// Graphics.attrib
case "display":
case "image-rendering":
case "shape-rendering":
case "text-rendering":
case "visibility":
Invalidate();
break;
case "transform":
Invalidate();
break;
}
base.HandleAttributeChange(attribute);
}
}
public void DrawTextPath(DrawingContext dc, PathGeometry pathGeometry,
ISvgAnimatedLength startOffset, TextAlignment alignment, SvgTextPathMethod method,
SvgTextPathSpacing spacing)
{
if (alignment == TextAlignment.Right)
{
this.DrawEndAlignedTextPath(dc, pathGeometry, startOffset);
}
else
{
this.DrawStartAlignedTextPath(dc, pathGeometry, startOffset, alignment);
}
}
public void Resize()
{
// TODO: Invalidate! Fire SVGResize
_x = null;
_y = null;
_width = null;
_height = null;
_currentView = null;
_cachedViewBoxTransform = null;
_viewport = null;
_svgFitToViewBox = null;
_svgFitToViewBox = new SvgFitToViewBox(this);
if (this != OwnerDocument.RootElement)
{
(OwnerDocument.RootElement as SvgSvgElement).Resize();
}
}
public void Resize()
{
// TODO: Invalidate! Fire SVGResize
x = null;
y = null;
width = null;
height = null;
currentView = null;
cachedViewBoxTransform = null;
viewport = null;
svgFitToViewBox = null;
svgFitToViewBox = new SvgFitToViewBox(this);
if (this == OwnerDocument.RootElement)
{
// TODO
}
else
{
(OwnerDocument.RootElement as SvgSvgElement).Resize();
}
}
private ISvgAnimatedLength GetPathOffset()
{
ISvgAnimatedLength pathOffset = _textPathElement.StartOffset;
if (pathOffset != null && pathOffset.AnimVal != null)
{
if (pathOffset.AnimVal.Value.Equals(0))
{
var curOffset = _pathTextRuns[0].StartOffset;
if (curOffset != null && curOffset.AnimVal != null)
{
if (!curOffset.AnimVal.Value.Equals(0))
{
return(curOffset);
}
}
}
}
return(pathOffset);
}
private ISvgAnimatedLength GetStartOffset(SvgTextPathElement pathElement, SvgTextBaseElement textElement)
{
ISvgAnimatedLength pathOffset = pathElement.StartOffset;
if (pathOffset != null && pathOffset.AnimVal != null)
{
if (pathOffset.AnimVal.Value.Equals(0))
{
var curOffset = this.GetStartOffset(textElement);
if (curOffset != null && curOffset.AnimVal != null)
{
if (!curOffset.AnimVal.Value.Equals(0))
{
return(curOffset);
}
}
}
return(pathOffset);
}
return(this.GetStartOffset(textElement));
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
switch (attribute.LocalName)
{
case "x":
x = null;
Invalidate();
return;
case "y":
y = null;
Invalidate();
return;
case "width":
width = null;
Invalidate();
return;
case "height":
height = null;
Invalidate();
return;
case "rx":
rx = null;
Invalidate();
return;
case "ry":
ry = null;
Invalidate();
return;
// Color.attrib, Paint.attrib
case "color":
case "fill":
case "fill-rule":
case "stroke":
case "stroke-dasharray":
case "stroke-dashoffset":
case "stroke-linecap":
case "stroke-linejoin":
case "stroke-miterlimit":
case "stroke-width":
// Opacity.attrib
case "opacity":
case "stroke-opacity":
case "fill-opacity":
// Graphics.attrib
case "display":
case "image-rendering":
case "shape-rendering":
case "text-rendering":
case "visibility":
Invalidate();
break;
case "transform":
Invalidate();
break;
case "onclick":
break;
}
base.HandleAttributeChange(attribute);
}
}
private void RenderEndAlignedText(DrawingContext dc, PathGeometry svgPath, ISvgAnimatedLength startOffset)
{
if (svgPath == null || svgPath.Figures == null || svgPath.Figures.Count != 1)
{
Debug.Assert(false, "Monitor invalid path cases in debug mode!");
return;
}
var pathFigure = svgPath.Figures[0];
_pathLength = WpfConvert.GetPathFigureLength(pathFigure);
if (_pathLength.Equals(0) || _textLength.Equals(0))
{
return;
}
double scalingFactor = 1.0; // Not scaling the text to fit...
double progress = 1.0;
if (startOffset != null && startOffset.AnimVal != null)
{
ISvgLength offsetLength = startOffset.AnimVal;
if (offsetLength.Value < 0)
{
progress = 0;
}
switch (offsetLength.UnitType)
{
// If a percentage is given, then the startOffset represents a
// percentage distance along the entire path.
case SvgLengthType.Percentage:
if (!offsetLength.ValueInSpecifiedUnits.Equals(0))
{
progress += offsetLength.ValueInSpecifiedUnits / 100d;
}
break;
// If a length other than a percentage is given, then the startOffset represents a distance along
// the path measured in the current user coordinate system.
case SvgLengthType.Number:
progress += offsetLength.ValueInSpecifiedUnits / _pathLength;
break;
}
}
if (progress < 0)
{
progress *= -1;
}
if (progress > 1)
{
progress = progress - 1;
while (progress > 1)
{
progress = progress - 1;
}
}
PathGeometry pathGeometry = new PathGeometry(new PathFigure[] { pathFigure });
Point ptPrevPos = new Point(0, 0);
int charCount = _pathChars.Count - 1;
for (int i = charCount; i >= 0; i--)
{
var pathChar = _pathChars[i];
var pathTextRun = _pathTextRuns[pathChar.Index];
var textBuilder = pathTextRun.Builder;
double width = scalingFactor * pathChar.Width;
double baseline = scalingFactor * textBuilder.Baseline;
progress -= width / 2 / _pathLength;
if (progress < 0)
{
break;
}
Point ptNext, ptTangent;
pathGeometry.GetPointAtFractionLength(progress, out ptNext, out ptTangent);
if (i != charCount && AreEqual(ptNext, ptPrevPos))
{
break;
}
var textPath = textBuilder.Build(pathTextRun.Element, pathChar.Text, pathChar.X, pathChar.Y);
var textTransform = new TransformGroup();
textTransform.Children.Add(new RotateTransform(Math.Atan2(ptTangent.Y, ptTangent.X) * 180 / Math.PI, width / 2, baseline));
textTransform.Children.Add(new TranslateTransform(ptNext.X - width / 2, ptNext.Y - baseline));
var curTransform = textPath.Transform;
if (curTransform != null && curTransform.Value.IsIdentity == false)
{
//Debug.Assert(false, "TODO: Wish to see the case");
textTransform.Children.Add(curTransform);
}
textPath.Transform = new MatrixTransform(textTransform.Value);
pathTextRun.AddRun(textPath);
progress -= width / 2 / _pathLength;
ptPrevPos = ptNext;
}
foreach (var pathTextRun in _pathTextRuns)
{
pathTextRun.RenderRun(dc);
}
}
private void RenderStartAlignedText(DrawingContext dc, PathGeometry svgPath,
ISvgAnimatedLength startOffset, TextAlignment alignment)
{
if (svgPath == null || svgPath.Figures == null || svgPath.Figures.Count != 1)
{
// Debug.Assert(false, "Monitor invalid path cases in debug mode!");
return;
}
var pathFigure = svgPath.Figures[0];
_pathLength = WpfConvert.GetPathFigureLength(pathFigure);
if (_pathLength.Equals(0) || _textLength.Equals(0))
{
return;
}
//double scalingFactor = pathLength / textLength;
double scalingFactor = 1.0; // Not scaling the text to fit...
double progress = 0;
if (startOffset != null && startOffset.AnimVal != null)
{
ISvgLength offsetLength = startOffset.AnimVal;
switch (offsetLength.UnitType)
{
// If a percentage is given, then the startOffset represents a
// percentage distance along the entire path.
case SvgLengthType.Percentage:
if (!offsetLength.ValueInSpecifiedUnits.Equals(0))
{
progress += offsetLength.ValueInSpecifiedUnits / 100d;
}
break;
// If a length other than a percentage is given, then the startOffset represents a distance along
// the path measured in the current user coordinate system.
case SvgLengthType.Number:
progress += offsetLength.ValueInSpecifiedUnits / _pathLength;
break;
}
}
PathGeometry pathGeometry = new PathGeometry(new PathFigure[] { pathFigure });
Point ptPrevPos = new Point(0, 0);
double letterSpacing = 0;
if (_textElement.LetterSpacing != null && _textElement.LetterSpacing.AnimVal != null)
{
letterSpacing = _textElement.LetterSpacing.AnimVal.ValueInSpecifiedUnits;
}
_pathLength += letterSpacing;
var lengthFactor = 1.0;
var textLength = this.GetTextLength();
if (textLength != null && textLength.AnimVal != null)
{
var textLengthValue = textLength.AnimVal.ValueInSpecifiedUnits;
if (textLengthValue > 0)
{
lengthFactor = textLengthValue / _pathLength;
// lengthFactor = _textLength / textLengthValue;
// lengthFactor = textLengthValue / _textLength;
// lengthFactor = _pathLength / textLengthValue;
if (lengthFactor < 0.5) // Check for abuse!
{
lengthFactor = 1;
}
}
}
int charCount = _pathChars.Count;
for (int i = 0; i < charCount; i++)
{
var pathChar = _pathChars[i];
var pathTextRun = _pathTextRuns[pathChar.Index];
var textBuilder = pathTextRun.Builder;
double width = (scalingFactor * pathChar.Width * lengthFactor + letterSpacing);
double baseline = scalingFactor * textBuilder.Baseline;
progress += width / 2 / _pathLength;
if (progress > 1)
{
break;
}
Point ptNextPos, ptTangent;
pathGeometry.GetPointAtFractionLength(progress, out ptNextPos, out ptTangent);
if (i != 0 && AreEqual(ptNextPos, ptPrevPos))
{
break;
}
var textPath = textBuilder.Build(pathTextRun.Element, pathChar.Text, pathChar.X, pathChar.Y);
var textTransform = new TransformGroup();
textTransform.Children.Add(new RotateTransform(Math.Atan2(ptTangent.Y, ptTangent.X) * 180 / Math.PI, width / 2, baseline));
textTransform.Children.Add(new TranslateTransform(ptNextPos.X - width / 2, ptNextPos.Y - baseline));
var curTransform = textPath.Transform;
if (curTransform != null && curTransform.Value.IsIdentity == false)
{
textTransform.Children.Add(curTransform);
}
textPath.Transform = new MatrixTransform(textTransform.Value);
pathTextRun.AddRun(textPath);
progress += width / 2 / _pathLength;
ptPrevPos = ptNextPos;
}
foreach (var pathTextRun in _pathTextRuns)
{
pathTextRun.RenderRun(dc);
}
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
// This list may be too long to be useful...
switch (attribute.LocalName)
{
// Additional attributes
case "x":
x = null;
return;
case "y":
y = null;
return;
case "width":
width = null;
return;
case "height":
height = null;
return;
}
base.HandleAttributeChange(attribute);
}
}
private void DrawEndAlignedTextPath(DrawingContext dc, PathGeometry pathGeometry,
ISvgAnimatedLength startOffset)
{
if (pathGeometry == null || pathGeometry.Figures == null ||
pathGeometry.Figures.Count != 1)
{
return;
}
_pathLength = GetPathFigureLength(pathGeometry.Figures[0]);
if (_pathLength == 0 || _textLength == 0)
return;
//double scalingFactor = pathLength / textLength;
double scalingFactor = 1.0; // Not scaling the text to fit...
double progress = 1.0;
//PathGeometry pathGeometry =
// new PathGeometry(new PathFigure[] { PathFigure });
Point ptOld = new Point(0, 0);
int itemCount = _formattedChars.Count - 1;
for (int i = itemCount; i >= 0; i--)
{
FormattedText formText = _formattedChars[i];
double width = scalingFactor *
formText.WidthIncludingTrailingWhitespace;
double baseline = scalingFactor * formText.Baseline;
progress -= width / 2 / _pathLength;
Point point, tangent;
pathGeometry.GetPointAtFractionLength(progress,
out point, out tangent);
if (i != itemCount)
{
if (point == ptOld)
{
break;
}
}
dc.PushTransform(
new TranslateTransform(point.X - width / 2,
point.Y - baseline));
dc.PushTransform(
new RotateTransform(Math.Atan2(tangent.Y, tangent.X)
* 180 / Math.PI, width / 2, baseline));
//dc.PushTransform(
// new ScaleTransform(scalingFactor, scalingFactor));
dc.DrawText(formText, _formattedOrigins[i]);
dc.Pop();
dc.Pop();
//dc.Pop();
progress -= width / 2 / _pathLength;
ptOld = point;
}
}
private void DrawStartAlignedTextPath(DrawingContext dc, PathGeometry pathGeometry,
ISvgAnimatedLength startOffset, TextAlignment alignment)
{
if (pathGeometry == null || pathGeometry.Figures == null ||
pathGeometry.Figures.Count != 1)
{
return;
}
_pathLength = GetPathFigureLength(pathGeometry.Figures[0]);
if (_pathLength == 0 || _textLength == 0)
return;
//double scalingFactor = pathLength / textLength;
double scalingFactor = 1.0; // Not scaling the text to fit...
double progress = 0;
if (startOffset != null)
{
ISvgLength offsetLength = startOffset.AnimVal;
if (offsetLength != null)
{
switch (offsetLength.UnitType)
{
case SvgLengthType.Percentage:
if ((float)offsetLength.ValueInSpecifiedUnits != 0)
{
progress += offsetLength.ValueInSpecifiedUnits / 100d;
}
break;
}
}
}
//PathGeometry pathGeometry =
// new PathGeometry(new PathFigure[] { PathFigure });
Point ptOld = new Point(0, 0);
for (int i = 0; i < _formattedChars.Count; i++)
{
FormattedText formText = _formattedChars[i];
double width = scalingFactor *
formText.WidthIncludingTrailingWhitespace;
double baseline = scalingFactor * formText.Baseline;
progress += width / 2 / _pathLength;
Point point, tangent;
pathGeometry.GetPointAtFractionLength(progress,
out point, out tangent);
if (i != 0)
{
if (point == ptOld)
{
break;
}
}
dc.PushTransform(
new TranslateTransform(point.X - width / 2,
point.Y - baseline));
dc.PushTransform(
new RotateTransform(Math.Atan2(tangent.Y, tangent.X)
* 180 / Math.PI, width / 2, baseline));
//dc.PushTransform(
// new ScaleTransform(scalingFactor, scalingFactor));
dc.DrawText(formText, _formattedOrigins[i]);
dc.Pop();
dc.Pop();
//dc.Pop();
progress += width / 2 / _pathLength;
ptOld = point;
}
}
public void DrawTextPath(DrawingContext dc, PathGeometry pathGeometry,
ISvgAnimatedLength startOffset, TextAlignment alignment, SvgTextPathMethod method,
SvgTextPathSpacing spacing)
{
if (alignment == TextAlignment.Right)
{
this.DrawEndAlignedTextPath(dc, pathGeometry, startOffset);
}
else
{
this.DrawStartAlignedTextPath(dc, pathGeometry, startOffset, alignment);
}
}
private void DrawEndAlignedTextPath(DrawingContext dc, PathGeometry pathGeometry,
ISvgAnimatedLength startOffset)
{
if (pathGeometry == null || pathGeometry.Figures == null ||
pathGeometry.Figures.Count != 1)
{
return;
}
_pathLength = GetPathFigureLength(pathGeometry.Figures[0]);
if (_pathLength == 0 || _textLength == 0)
{
return;
}
//double scalingFactor = pathLength / textLength;
double scalingFactor = 1.0; // Not scaling the text to fit...
double progress = 1.0;
//PathGeometry pathGeometry =
// new PathGeometry(new PathFigure[] { PathFigure });
Point ptOld = new Point(0, 0);
int itemCount = _formattedChars.Count - 1;
for (int i = itemCount; i >= 0; i--)
{
FormattedText formText = _formattedChars[i];
double width = scalingFactor *
formText.WidthIncludingTrailingWhitespace;
double baseline = scalingFactor * formText.Baseline;
progress -= width / 2 / _pathLength;
Point point, tangent;
pathGeometry.GetPointAtFractionLength(progress,
out point, out tangent);
if (i != itemCount)
{
if (point == ptOld)
{
break;
}
}
dc.PushTransform(
new TranslateTransform(point.X - width / 2,
point.Y - baseline));
dc.PushTransform(
new RotateTransform(Math.Atan2(tangent.Y, tangent.X)
* 180 / Math.PI, width / 2, baseline));
//dc.PushTransform(
// new ScaleTransform(scalingFactor, scalingFactor));
dc.DrawText(formText, _formattedOrigins[i]);
dc.Pop();
dc.Pop();
//dc.Pop();
progress -= width / 2 / _pathLength;
ptOld = point;
}
}
private void addRoundedRect(GraphicsPath graphicsPath, RectangleF rect, float rx, float ry)
{
if(rx == 0F) rx = ry;
else if(ry == 0F) ry = rx;
rx = Math.Min(rect.Width/2, rx);
ry = Math.Min(rect.Height/2, ry);
float a = rect.X + rect.Width - rx;
graphicsPath.AddLine(rect.X + rx, rect.Y, a, rect.Y);
graphicsPath.AddArc(a-rx, rect.Y, rx*2, ry*2, 270, 90);
float right = rect.X + rect.Width; // rightmost X
float b = rect.Y + rect.Height - ry;
graphicsPath.AddLine(right, rect.Y + ry, right, b);
graphicsPath.AddArc(right - rx*2, b-ry, rx*2, ry*2, 0, 90);
graphicsPath.AddLine(right - rx, rect.Y + rect.Height, rect.X + rx, rect.Y + rect.Height);
graphicsPath.AddArc(rect.X, b-ry, rx*2, ry*2, 90, 90);
graphicsPath.AddLine(rect.X, b, rect.X, rect.Y + ry);
graphicsPath.AddArc(rect.X, rect.Y, rx*2, ry*2, 180, 90);
}
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();
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if(attribute.NamespaceURI.Length == 0)
{
switch(attribute.LocalName)
{
case "x1":
x1 = null;
Invalidate();
return;
case "y1":
y1 = null;
Invalidate();
return;
case "x2":
x2 = null;
Invalidate();
return;
case "y2":
y2 = null;
Invalidate();
return;
case "marker-start":
case "marker-mid":
case "marker-end":
// Color.attrib, Paint.attrib
case "color":
case "fill":
case "fill-rule":
case "stroke":
case "stroke-dasharray":
case "stroke-dashoffset":
case "stroke-linecap":
case "stroke-linejoin":
case "stroke-miterlimit":
case "stroke-width":
// Opacity.attrib
case "opacity":
case "stroke-opacity":
case "fill-opacity":
// Graphics.attrib
case "display":
case "image-rendering":
case "shape-rendering":
case "text-rendering":
case "visibility":
Invalidate();
break;
case "transform":
Invalidate();
break;
}
base.HandleAttributeChange(attribute);
}
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
switch (attribute.LocalName)
{
case "x":
x = null;
return;
case "y":
y = null;
return;
case "width":
width = null;
return;
case "height":
height = null;
return;
}
}
else if (attribute.NamespaceURI == SvgDocument.XLinkNamespace)
{
switch (attribute.LocalName)
{
case "href":
instanceRoot = null;
break;
}
}
base.HandleAttributeChange(attribute);
}
public void Resize()
{
// TODO: Invalidate! Fire SVGResize
x = null;
y = null;
width = null;
height = null;
currentView = null;
cachedViewBoxTransform = null;
viewport = null;
svgFitToViewBox = null;
svgFitToViewBox = new SvgFitToViewBox(this);
if (this == OwnerDocument.RootElement)
{
// TODO
}
else
{
(OwnerDocument.RootElement as SvgSvgElement).Resize();
}
}
private void DrawStartAlignedTextPath(DrawingContext dc, PathGeometry pathGeometry,
ISvgAnimatedLength startOffset, TextAlignment alignment)
{
if (pathGeometry == null || pathGeometry.Figures == null ||
pathGeometry.Figures.Count != 1)
{
return;
}
_pathLength = GetPathFigureLength(pathGeometry.Figures[0]);
if (_pathLength == 0 || _textLength == 0)
{
return;
}
//double scalingFactor = pathLength / textLength;
double scalingFactor = 1.0; // Not scaling the text to fit...
double progress = 0;
if (startOffset != null)
{
ISvgLength offsetLength = startOffset.AnimVal;
if (offsetLength != null)
{
switch (offsetLength.UnitType)
{
case SvgLengthType.Percentage:
if ((float)offsetLength.ValueInSpecifiedUnits != 0)
{
progress += offsetLength.ValueInSpecifiedUnits / 100d;
}
break;
}
}
}
//PathGeometry pathGeometry =
// new PathGeometry(new PathFigure[] { PathFigure });
Point ptOld = new Point(0, 0);
for (int i = 0; i < _formattedChars.Count; i++)
{
FormattedText formText = _formattedChars[i];
double width = scalingFactor *
formText.WidthIncludingTrailingWhitespace;
double baseline = scalingFactor * formText.Baseline;
progress += width / 2 / _pathLength;
Point point, tangent;
pathGeometry.GetPointAtFractionLength(progress,
out point, out tangent);
if (i != 0)
{
if (point == ptOld)
{
break;
}
}
dc.PushTransform(
new TranslateTransform(point.X - width / 2,
point.Y - baseline));
dc.PushTransform(
new RotateTransform(Math.Atan2(tangent.Y, tangent.X)
* 180 / Math.PI, width / 2, baseline));
//dc.PushTransform(
// new ScaleTransform(scalingFactor, scalingFactor));
dc.DrawText(formText, _formattedOrigins[i]);
dc.Pop();
dc.Pop();
//dc.Pop();
progress += width / 2 / _pathLength;
ptOld = point;
}
}
public override void HandleAttributeChange(XmlAttribute attribute)
{
if (attribute.NamespaceURI.Length == 0)
{
switch (attribute.LocalName)
{
case "x1":
_x1 = null;
Invalidate();
return;
case "y1":
_y1 = null;
Invalidate();
return;
case "x2":
_x2 = null;
Invalidate();
return;
case "y2":
_y2 = null;
Invalidate();
return;
case "marker-start":
case "marker-mid":
case "marker-end":
// Color.attrib, Paint.attrib
case CssConstants.PropColor:
case "fill":
case "fill-rule":
case "stroke":
case "stroke-dasharray":
case "stroke-dashoffset":
case "stroke-linecap":
case "stroke-linejoin":
case "stroke-miterlimit":
case "stroke-width":
// Opacity.attrib
case "opacity":
case "stroke-opacity":
case "fill-opacity":
// Graphics.attrib
case CssConstants.PropDisplay:
case "image-rendering":
case "shape-rendering":
case "text-rendering":
case CssConstants.PropVisibility:
Invalidate();
break;
case "transform":
Invalidate();
break;
}
base.HandleAttributeChange(attribute);
}
}
public void SetPosition(Point pos, SvgTextPathElement pathElement, SvgTextBaseElement textElement)
{
_contentPos = pos;
_startOffset = this.GetStartOffset(pathElement, textElement);
}
