/// <summary>
/// Set common shape attributes
/// </summary>
private void SetShapeAttributes(GraphicPath graphicPath, GraphicPath transformedPath)
{
transformedPath.FillBrush = TransformBrush(graphicPath.FillBrush);
transformedPath.StrokeBrush = TransformBrush(graphicPath.StrokeBrush);
transformedPath.StrokeThickness = MatrixUtilities.TransformScale(graphicPath.StrokeThickness, transformMatrix);
transformedPath.StrokeMiterLimit = MatrixUtilities.TransformScale(graphicPath.StrokeMiterLimit, transformMatrix);
transformedPath.StrokeLineCap = graphicPath.StrokeLineCap;
transformedPath.StrokeLineJoin = graphicPath.StrokeLineJoin;
transformedPath.StrokeDashOffset = graphicPath.StrokeDashOffset;
transformedPath.StrokeDashes = graphicPath.StrokeDashes;
}
/// <summary>
/// Set all colors of the graphic path
/// </summary>
private void SetStroke(XElement path, GraphicPath graphicPath, Matrix currentTransformationMatrix, double parentOpacity)
{
graphicPath.StrokeBrush = CreateBrush(path, "stroke", false, graphicPath, currentTransformationMatrix, parentOpacity);
if (graphicPath.StrokeBrush != null)
{
graphicPath.StrokeThickness = MatrixUtilities.TransformScale(GetLengthPercentFromCascade("stroke-width", 1), currentTransformationMatrix);
graphicPath.StrokeMiterLimit = MatrixUtilities.TransformScale(cssStyleCascade.GetNumber("stroke-miterlimit", 4), currentTransformationMatrix);
graphicPath.StrokeLineCap = GetLineCap();
graphicPath.StrokeLineJoin = GetLineJoin();
graphicPath.StrokeDashOffset = MatrixUtilities.TransformScale(GetLengthPercentFromCascade("stroke-dashoffset", 0), currentTransformationMatrix) / graphicPath.StrokeThickness;
graphicPath.StrokeDashes = GetDashes(graphicPath.StrokeThickness, currentTransformationMatrix);
}
}
/// <summary>
/// Set all colors of the graphic path
/// </summary>
private void SetFillAndStroke(XElement path, GraphicPath graphicPath)
{
// fill
graphicPath.FillBrush = CreateBrush(path, "fill", true, graphicPath);
// stroke
graphicPath.StrokeBrush = CreateBrush(path, "stroke", false, graphicPath);
if (graphicPath.StrokeBrush != null)
{
graphicPath.StrokeThickness = MatrixUtilities.TransformScale(cssStyleCascade.GetDouble("stroke-width", 1), currentTransformationMatrix);
graphicPath.StrokeMiterLimit = MatrixUtilities.TransformScale(cssStyleCascade.GetDouble("stroke-miterlimit", 4), currentTransformationMatrix);
graphicPath.StrokeLineCap = GetLineCap();
graphicPath.StrokeLineJoin = GetLineJoin();
graphicPath.StrokeDashOffset = MatrixUtilities.TransformScale(cssStyleCascade.GetDouble("stroke-dashoffset", 0), currentTransformationMatrix) / graphicPath.StrokeThickness;
graphicPath.StrokeDashes = GetDashes(graphicPath.StrokeThickness);
}
}
/// <summary>
/// Sets the dash pattern
/// </summary>
private void SetDashPattern(GraphicsState graphicState, double dashPhase, ArrayOperand dashArray)
{
if (dashArray.Values.Count == 0)
{
graphicState.Dashes = null;
graphicState.DashOffset = 0;
return;
}
var dashes = new List <double>();
foreach (var val in dashArray.Values)
{
var dbl = MatrixUtilities.TransformScale(OperandHelper.GetRealValue(val.Operand), graphicState.CurrentTransformationMatrix);
dashes.Add(dbl);
}
graphicState.Dashes = dashes;
graphicState.DashOffset = dashPhase;
}
/// <summary>
/// Creates the dashes list. The dashes are convertered from SVG
/// absolute size to size relative to the given thickness
/// </summary>
private List <double> GetDashes(double thickness, Matrix currentTransformationMatrix)
{
List <double> dashes = null;
var strVal = cssStyleCascade.GetProperty("stroke-dasharray");
if (string.IsNullOrEmpty(strVal) || strVal == "none")
{
return(dashes);
}
var dbls = doubleParser.GetLengthPercentList(strVal, PercentBaseSelector.None);
dashes = new List <double>();
foreach (var dbl in dbls)
{
var dash = MatrixUtilities.TransformScale(dbl, currentTransformationMatrix);
dashes.Add(dash / thickness);
}
return(dashes);
}
/// <summary>
/// Sets the dash pattern
/// </summary>
private void SetDashPattern(CSequence operands)
{
var dashArray = (CArray)operands[0];
var dashPhase = PdfUtilities.GetDouble(operands[1]);
if (dashArray.Count == 0)
{
currentGraphicsState.Dashes = null;
currentGraphicsState.DashOffset = 0;
return;
}
var dashes = new List <double>();
foreach (var val in dashArray)
{
var dbl = MatrixUtilities.TransformScale(PdfUtilities.GetDouble(val), currentGraphicsState.CurrentTransformationMatrix);
dashes.Add(dbl);
}
currentGraphicsState.Dashes = dashes;
currentGraphicsState.DashOffset = dashPhase;
}
/// <summary>
/// Creates the dashes list. The dashes are convertered from SVG
/// absolute size to size relative to the given thickness
/// </summary>
private List <double> GetDashes(double thickness)
{
List <double> dashes = null;
var strVal = cssStyleCascade.GetProperty("stroke-dasharray");
if (string.IsNullOrEmpty(strVal) || strVal == "none")
{
return(dashes);
}
var parser = new DoubleListParser();
var dbls = parser.ParseDoubleList(strVal);
dashes = new List <double>();
foreach (var dbl in dbls)
{
var dash = MatrixUtilities.TransformScale(dbl, currentTransformationMatrix);
dashes.Add(dash / thickness);
}
return(dashes);
}
/// <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);
}
/// <summary>
/// Parse a single PDF page
/// </summary>
public GraphicGroup Run(PdfDictionary form, CSequence sequence, GraphicsState graphicsState)
{
this.returnGraphicGroup = new GraphicGroup();
graphicGroup = returnGraphicGroup;
graphicsStateStack = new Stack <GraphicsState>();
fontState = new FontState();
textVectorizer = new TextVectorizer();
currentGraphicsState = graphicsState;
Init(form);
InitColor();
Point currentPoint = new Point(0, 0);
GraphicMoveSegment lastMove = null;
ResetCurrentGeometry();
for (int index = 0; index < sequence.Count; index++)
{
var contentOperator = sequence[index] as COperator;
switch (contentOperator.OpCode.OpCodeName)
{
// path construction operators
// rectangle
case OpCodeName.re:
{
if (currentGeometry == null)
{
currentGeometry = new GraphicPathGeometry();
}
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
var width = PdfUtilities.GetDouble(contentOperator.Operands[2]);
var height = PdfUtilities.GetDouble(contentOperator.Operands[3]);
var point1 = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
var point2 = MatrixUtilities.TransformPoint(x + width, y + height, currentGraphicsState.CurrentTransformationMatrix);
var move = new GraphicMoveSegment {
StartPoint = point1
};
currentGeometry.Segments.Add(move);
var lineTo = new GraphicLineSegment {
To = new Point(point2.X, point1.Y)
};
currentGeometry.Segments.Add(lineTo);
lineTo = new GraphicLineSegment {
To = new Point(point2.X, point2.Y)
};
currentGeometry.Segments.Add(lineTo);
lineTo = new GraphicLineSegment {
To = new Point(point1.X, point2.Y)
};
currentGeometry.Segments.Add(lineTo);
move.IsClosed = true;
lastMove = move;
currentPoint = point1;
break;
}
// move to
case OpCodeName.m:
{
if (currentGeometry == null)
{
currentGeometry = new GraphicPathGeometry();
}
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
var point = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
var move = new GraphicMoveSegment {
StartPoint = point
};
currentGeometry.Segments.Add(move);
lastMove = move;
currentPoint = point;
break;
}
// line to
case OpCodeName.l:
{
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
var point = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
var lineTo = new GraphicLineSegment {
To = point
};
currentGeometry.Segments.Add(lineTo);
currentPoint = point;
break;
}
// cubic bezier
case OpCodeName.c:
{
var bezier = new GraphicCubicBezierSegment();
currentGeometry.Segments.Add(bezier);
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
bezier.ControlPoint1 = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
x = PdfUtilities.GetDouble(contentOperator.Operands[2]);
y = PdfUtilities.GetDouble(contentOperator.Operands[3]);
bezier.ControlPoint2 = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
x = PdfUtilities.GetDouble(contentOperator.Operands[4]);
y = PdfUtilities.GetDouble(contentOperator.Operands[5]);
bezier.EndPoint = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
currentPoint = bezier.EndPoint;
break;
}
// quadratic bezier
case OpCodeName.v:
{
var bezier = new GraphicCubicBezierSegment();
currentGeometry.Segments.Add(bezier);
bezier.ControlPoint1 = currentPoint;
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
bezier.ControlPoint2 = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
x = PdfUtilities.GetDouble(contentOperator.Operands[2]);
y = PdfUtilities.GetDouble(contentOperator.Operands[3]);
bezier.EndPoint = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
currentPoint = bezier.EndPoint;
break;
}
// quadratic bezier
case OpCodeName.y:
{
var bezier = new GraphicCubicBezierSegment();
currentGeometry.Segments.Add(bezier);
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
bezier.ControlPoint1 = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
x = PdfUtilities.GetDouble(contentOperator.Operands[2]);
y = PdfUtilities.GetDouble(contentOperator.Operands[3]);
bezier.ControlPoint2 = MatrixUtilities.TransformPoint(x, y, currentGraphicsState.CurrentTransformationMatrix);
bezier.EndPoint = bezier.ControlPoint2;
currentPoint = bezier.EndPoint;
break;
}
// path painting operators
// end the path without filling and stroking
case OpCodeName.n:
{
ResetCurrentGeometry();
break;
}
// set clipping path
case OpCodeName.W:
case OpCodeName.Wx:
{
currentGraphicsState.ClippingPath = currentGeometry;
graphicGroup = new GraphicGroup();
graphicGroup.Clip = currentGeometry;
returnGraphicGroup.Children.Add(graphicGroup);
break;
}
// close path
case OpCodeName.h:
lastMove.IsClosed = true;
break;
// close and fill the path
case OpCodeName.s:
{
lastMove.IsClosed = true;
var path = GetCurrentPathFilled();
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// stroke the path
case OpCodeName.S:
{
var path = GetCurrentPathStroked();
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// close, fill and stroke the path
case OpCodeName.b:
case OpCodeName.bx:
{
lastMove.IsClosed = true;
var path = GetCurrentPathFilledAndStroked();
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// fill and stroke the path
case OpCodeName.B:
{
var path = GetCurrentPathFilledAndStroked();
currentGeometry.FillRule = GraphicFillRule.NoneZero;
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// fill and stroke the path
case OpCodeName.Bx:
{
var path = GetCurrentPathFilledAndStroked();
currentGeometry.FillRule = GraphicFillRule.NoneZero;
currentGeometry.FillRule = GraphicFillRule.EvenOdd;
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// fill the path
case OpCodeName.F:
case OpCodeName.f:
{
var path = GetCurrentPathFilled();
currentGeometry.FillRule = GraphicFillRule.NoneZero;
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// fill the path
case OpCodeName.fx:
{
var path = GetCurrentPathFilled();
currentGeometry.FillRule = GraphicFillRule.EvenOdd;
graphicGroup.Children.Add(path);
ResetCurrentGeometry();
break;
}
// set color space for stroking operations
case OpCodeName.CS:
{
var colorSpaceName = ((CName)contentOperator.Operands[0]).Name;
currentGraphicsState.StrokeColorSpace = colorSpaceManager.GetColorSpace(colorSpaceName);
break;
}
// set color space for nonstroking operations
case OpCodeName.cs:
{
var colorSpaceName = ((CName)contentOperator.Operands[0]).Name;
currentGraphicsState.ColorSpace = colorSpaceManager.GetColorSpace(colorSpaceName);
break;
}
// set /DeviceRGB and non-stroked color
case OpCodeName.rg:
{
currentGraphicsState.ColorSpace = colorSpaceManager.GetColorSpace(PdfKeys.DeviceRGB);
currentGraphicsState.FillBrush =
currentGraphicsState.ColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.FillAlpha.Current);
break;
}
// set /DeviceCMYK and non-stroked color
case OpCodeName.k:
{
currentGraphicsState.ColorSpace = colorSpaceManager.GetColorSpace(PdfKeys.DeviceCMYK);
currentGraphicsState.FillBrush =
currentGraphicsState.ColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.FillAlpha.Current);
break;
}
// set /DeviceGray and non-stroked color
case OpCodeName.g:
{
currentGraphicsState.ColorSpace = colorSpaceManager.GetColorSpace(PdfKeys.DeviceGray);
currentGraphicsState.FillBrush =
currentGraphicsState.ColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.FillAlpha.Current);
break;
}
// non-stroked color
case OpCodeName.sc:
{
currentGraphicsState.FillBrush =
currentGraphicsState.ColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.FillAlpha.Current);
break;
}
// ICC based non-stroked color
case OpCodeName.scn:
{
currentGraphicsState.FillBrush =
currentGraphicsState.ColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.FillAlpha.Current);
break;
}
// ICC based stroked color
case OpCodeName.SCN:
{
currentGraphicsState.StrokeBrush =
currentGraphicsState.StrokeColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.StrokeAlpha.Current);
break;
}
// set /DeviceRGB and stroked color
case OpCodeName.RG:
{
currentGraphicsState.StrokeColorSpace = colorSpaceManager.GetColorSpace(PdfKeys.DeviceRGB);
currentGraphicsState.StrokeBrush =
currentGraphicsState.StrokeColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.StrokeAlpha.Current);
break;
}
// set /DeviceGray and stroked color
case OpCodeName.G:
{
currentGraphicsState.StrokeColorSpace = colorSpaceManager.GetColorSpace(PdfKeys.DeviceGray);
currentGraphicsState.StrokeBrush =
currentGraphicsState.StrokeColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.StrokeAlpha.Current);
break;
}
// set /DeviceCMYK and stroked color
case OpCodeName.K:
{
currentGraphicsState.StrokeColorSpace = colorSpaceManager.GetColorSpace(PdfKeys.DeviceCMYK);
currentGraphicsState.StrokeBrush =
currentGraphicsState.StrokeColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.StrokeAlpha.Current);
break;
}
// set stroked color
case OpCodeName.SC:
{
currentGraphicsState.StrokeBrush =
currentGraphicsState.StrokeColorSpace.GetBrushDescriptor(contentOperator.Operands,
currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.StrokeAlpha.Current);
break;
}
// shading
case OpCodeName.sh:
{
var graphicPath = new GraphicPath();
var shadingDescriptor = shadingManager.GetShading(contentOperator.Operands);
graphicPath.Geometry = currentGraphicsState.ClippingPath;
graphicPath.FillBrush = shadingDescriptor.GetBrush(currentGraphicsState.CurrentTransformationMatrix,
currentGraphicsState.ClippingPath.Bounds,
currentGraphicsState.FillAlpha.Current,
currentGraphicsState.SoftMask);
graphicPath.ColorPrecision = shadingDescriptor.ColorPrecision;
graphicGroup.Children.Add(graphicPath);
break;
}
// begin text
case OpCodeName.BT:
{
fontState.TextLineMatrix = Matrix.Identity;
fontState.TextMatrix = Matrix.Identity;
break;
}
// set current font
case OpCodeName.Tf:
{
var fontName = ((CName)contentOperator.Operands[0]).Name;
fontState.FontSize = PdfUtilities.GetDouble(contentOperator.Operands[1]);
fontState.FontDescriptor = fontManager.GetFont(fontName);
break;
}
// set rendering mode
case OpCodeName.Tr:
{
fontState.RenderingMode = PdfUtilities.GetRenderingMode(contentOperator.Operands[0]);
break;
}
// set font transformation matrix
case OpCodeName.Tm:
{
var matrix = PdfUtilities.GetMatrix(contentOperator.Operands);
fontState.TextMatrix = matrix;
fontState.TextLineMatrix = matrix;
break;
}
// translate line matrix
case OpCodeName.Td:
{
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
// for some unknown reason the simple next statement doesn't
// work, do it in small steps instead
//fontState.TextLineMatrix.TranslatePrepend(x, y);
var m = fontState.TextLineMatrix;
m.TranslatePrepend(x, y);
fontState.TextLineMatrix = m;
fontState.TextMatrix = fontState.TextLineMatrix;
break;
}
case OpCodeName.TD:
{
var x = PdfUtilities.GetDouble(contentOperator.Operands[0]);
var y = PdfUtilities.GetDouble(contentOperator.Operands[1]);
//fontState.TextLineMatrix.Translate(x, y);
var m = fontState.TextLineMatrix;
m.TranslatePrepend(x, y);
fontState.TextLineMatrix = m;
fontState.Leading = -y;
fontState.TextMatrix = fontState.TextLineMatrix;
break;
}
case OpCodeName.TL:
{
fontState.Leading = PdfUtilities.GetDouble(contentOperator.Operands[0]);
break;
}
case OpCodeName.Tx:
{
var m = fontState.TextLineMatrix;
m.TranslatePrepend(0, -fontState.Leading);
fontState.TextLineMatrix = m;
fontState.TextMatrix = fontState.TextLineMatrix;
break;
}
case OpCodeName.QuoteSingle:
{
break;
}
case OpCodeName.QuoteDbl:
{
break;
}
// a single string
case OpCodeName.Tj:
{
var text = (CString)contentOperator.Operands[0];
var textGraphic = textVectorizer.Vectorize(text.Value, currentGraphicsState, fontState);
graphicGroup.Children.AddRange(textGraphic);
break;
}
// multiple strings plus formatting
case OpCodeName.TJ:
{
var array = (CArray)contentOperator.Operands[0];
HandleMultipleTextCommand(array);
break;
}
// graphics state operators
// push state onto the stack
case OpCodeName.q:
{
var clone = currentGraphicsState.Clone();
graphicsStateStack.Push(clone);
break;
}
// pop state from the stack
case OpCodeName.Q:
{
currentGraphicsState = graphicsStateStack.Pop();
break;
}
// current transform matrix
case OpCodeName.cm:
{
var matrix = PdfUtilities.GetMatrix(contentOperator.Operands);
currentGraphicsState.TransformationMatrix *= matrix;
break;
}
case OpCodeName.J:
{
currentGraphicsState.LineCap = GetLineCap(((CInteger)contentOperator.Operands[0]).Value);
break;
}
case OpCodeName.j:
{
currentGraphicsState.LineJoin = GetLineJoin(((CInteger)contentOperator.Operands[0]).Value);
break;
}
case OpCodeName.M:
{
currentGraphicsState.MiterLimit = PdfUtilities.GetDouble(contentOperator.Operands[0]);
break;
}
case OpCodeName.d:
{
SetDashPattern(contentOperator.Operands);
break;
}
// line width
case OpCodeName.w:
{
currentGraphicsState.LineWidth = MatrixUtilities.TransformScale(PdfUtilities.GetDouble(contentOperator.Operands[0]), currentGraphicsState.CurrentTransformationMatrix);
break;
}
// set parameters in the current graphic state of the given state name
case OpCodeName.gs:
{
var name = contentOperator.Operands[0] as CName;
extendedStatesManager.SetExtendedGraphicState(currentGraphicsState, fontState, name.Name);
break;
}
case OpCodeName.Do:
{
var xObjectName = ((CName)contentOperator.Operands[0]).Name;
RunXObject(xObjectName);
break;
}
default:
break;
}
}
return(this.returnGraphicGroup);
}