/// <summary>
/// Parse a text
/// </summary>
private GraphicVisual ParseText(XElement textElement,
Matrix currentTransformationMatrix)
{
GraphicGroup graphicGroup = new GraphicGroup();
var colorBlocks = new List <ColorBlock>();
var positionBlocks = new List <PositionBlock>();
var position = new CharacterPositions();
var textColorBlock = new ColorBlock();
colorBlocks.Add(textColorBlock);
textColorBlock.Characters = new List <PositionBlockCharacter>();
textColorBlock.AdjustFillGlobal = true;
textColorBlock.AdjustStrokeGlobal = true;
var xList = GetLengthPercentList(textElement, "x", PercentBaseSelector.ViewBoxWidth);
if (xList == null)
{
xList = new List <double> {
0.0
};
}
var dxList = GetLengthPercentList(textElement, "dx", PercentBaseSelector.ViewBoxWidth);
position.X.SetParentValues(xList, dxList);
var yList = GetLengthPercentList(textElement, "y", PercentBaseSelector.ViewBoxHeight);
if (yList == null)
{
yList = new List <double> {
0.0
};
}
var dyList = GetLengthPercentList(textElement, "dy", PercentBaseSelector.ViewBoxHeight);
position.Y.SetParentValues(yList, dyList);
var fontSize = GetFontSize();
var typeface = GetTypeface();
var textAnchor = GetTextAnchor();
var rotation = new ParentChildPriorityList();
rotation.ParentValues = GetRotate(textElement);
var textOpacity = cssStyleCascade.GetNumberPercentFromTop("opacity", 1);
var textFillOpacity = cssStyleCascade.GetNumberPercentFromTop("fill-opacity", 1);
var textStrokeOpacity = cssStyleCascade.GetNumberPercentFromTop("stroke-opacity", 1);
if (false && !textElement.HasElements)
{
var geometry = ParseTextGeometry(textElement, currentTransformationMatrix);
var graphicPath = new GraphicPath();
graphicPath.Geometry = geometry;
graphicPath.Geometry.FillRule = GraphicFillRule.NoneZero;
brushParser.SetFillAndStroke(textElement, graphicPath, currentTransformationMatrix);
return(graphicPath);
}
XNode node = textElement.FirstNode;
bool beginOfLine = true;
while (node != null)
{
var nextNode = node.NextNode;
var hasSuccessor = nextNode != null;
switch (node)
{
case XElement embededElement:
{
if (!PresentationAttribute.IsElementVisible(embededElement))
{
continue;
}
switch (embededElement.Name.LocalName)
{
case "tspan":
{
var tspanElement = embededElement;
var isTspanDisplayed = PresentationAttribute.IsElementDisplayed(tspanElement);
cssStyleCascade.PushStyles(tspanElement);
var xChildList = GetLengthPercentList(tspanElement, "x", PercentBaseSelector.ViewBoxWidth);
var dxChildList = GetLengthPercentList(tspanElement, "dx", PercentBaseSelector.ViewBoxWidth);
position.X.SetChildValues(xChildList, dxChildList);
var yChildList = GetLengthPercentList(tspanElement, "y", PercentBaseSelector.ViewBoxHeight);
var dyChildList = GetLengthPercentList(tspanElement, "dy", PercentBaseSelector.ViewBoxHeight);
position.Y.SetChildValues(yChildList, dyChildList);
var hasOwnFill = ExistsAttributeOnTop("fill");
var hasOwnStroke = ExistsAttributeOnTop("stroke");
var tspanFontSize = GetFontSize();
var tspanTypeface = GetTypeface();
var tspanAnchor = GetTextAnchor();
rotation.ChildValues = GetRotate(tspanElement);
var charBlock = Vectorize(positionBlocks,
tspanElement.Value,
tspanAnchor,
position,
beginOfLine,
hasSuccessor,
tspanTypeface,
tspanFontSize,
rotation,
currentTransformationMatrix);
rotation.ChildValues = null;
position.X.SetChildValues(null, null);
position.Y.SetChildValues(null, null);
if (isTspanDisplayed)
{
ColorBlock colorBlock;
if (hasOwnFill || hasOwnStroke)
{
colorBlock = new ColorBlock();
colorBlocks.Add(colorBlock);
colorBlock.Characters = charBlock;
colorBlock.AdjustFillGlobal = !hasOwnFill;
colorBlock.AdjustStrokeGlobal = !hasOwnStroke;
}
else
{
colorBlock = textColorBlock;
textColorBlock.Characters.AddRange(charBlock);
}
for (int i = 0; i < charBlock.Count; i++)
{
var path = new GraphicPath();
colorBlock.Paths.Add(path);
brushParser.SetFillAndStroke(tspanElement, path, currentTransformationMatrix, textOpacity, textFillOpacity, textStrokeOpacity);
}
}
cssStyleCascade.Pop();
}
break;
case "textpath":
{
break;
}
}
break;
}
case XText textContentElement:
{
var charBlock = Vectorize(positionBlocks,
textContentElement.Value,
textAnchor,
position,
beginOfLine,
hasSuccessor,
typeface,
fontSize,
rotation,
currentTransformationMatrix);
textColorBlock.Characters.AddRange(charBlock);
for (int i = 0; i < charBlock.Count; i++)
{
var path = new GraphicPath();
textColorBlock.Paths.Add(path);
brushParser.SetFillAndStroke(textElement, path, currentTransformationMatrix);
}
break;
}
}
beginOfLine = false;
node = nextNode;
}
AdjustPosition(positionBlocks);
if (GetTextLength(textElement, out double textLength))
{
textLength = MatrixUtilities.TransformScale(textLength, currentTransformationMatrix);
AdjustLength(positionBlocks, textLength, GetTextAdjust(textElement));
}
UpdateColorBlockPathGeometry(colorBlocks);
AdjustGradients(colorBlocks);
foreach (var block in colorBlocks)
{
graphicGroup.Children.AddRange(block.Paths);
}
if (clipping.IsClipPathSet())
{
clipping.SetClipPath(graphicGroup, currentTransformationMatrix);
}
return(graphicGroup);
}
public OneDimensionPositions()
{
AbsoluteValue = new ParentChildPriorityList();
RelativeValue = new ParentChildPriorityList();
Current = 0;
}