/// <summary>
/// Gets a PdfExtGState with the key 'CA' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGStateStroke(double alpha)
{
string key = MakeKey(alpha);
PdfExtGState extGState = this.strokeAlphaValues[key] as PdfExtGState;
if (extGState == null)
{
extGState = new PdfExtGState(this.owner);
extGState.Elements[PdfExtGState.Keys.CA] = new PdfReal(alpha);
this.strokeAlphaValues[key] = extGState;
}
return extGState;
}
/// <summary>
/// Gets a PdfExtGState with the key 'CA' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGStateStroke(double alpha)
{
string key = MakeKey(alpha);
PdfExtGState extGState;
if (!this.strokeAlphaValues.TryGetValue(key, out extGState))
{
extGState = new PdfExtGState(this.owner);
extGState.Elements[PdfExtGState.Keys.CA] = new PdfReal(alpha);
this.strokeAlphaValues[key] = extGState;
}
return extGState;
}
/// <summary>
/// Gets a PdfExtGState with the key 'ca' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGStateNonStroke(double alpha)
{
string key = MakeKey(alpha);
PdfExtGState extGState;;
if (!this.nonStrokeAlphaValues.TryGetValue(key, out extGState))
{
extGState = new PdfExtGState(this.owner);
extGState.Elements[PdfExtGState.Keys.ca] = new PdfReal(alpha);
this.nonStrokeAlphaValues[key] = extGState;
}
return(extGState);
}
/// <summary>
/// Gets a PdfExtGState with the key 'ca' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGStateNonStroke(double alpha)
{
string key = MakeKey(alpha);
PdfExtGState extGState = this.nonStrokeAlphaValues[key] as PdfExtGState;
if (extGState == null)
{
extGState = new PdfExtGState(this.document);
extGState.Elements[PdfExtGState.Keys.ca] = new PdfReal(alpha);
this.nonStrokeAlphaValues[key] = extGState;
}
return(extGState);
}
/// <summary>
/// Gets a PdfExtGState with the keys 'CA' and 'ca' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGState(double alpha)
{
string key = MakeKey(alpha);
PdfExtGState extGState;
if (!alphaValues.TryGetValue(key, out extGState))
{
extGState = new PdfExtGState(owner);
extGState.Elements[PdfExtGState.Keys.CA] = new PdfReal(alpha);
extGState.Elements[PdfExtGState.Keys.ca] = new PdfReal(alpha);
alphaValues[key] = extGState;
}
return(extGState);
}
/// <summary>
/// Adds the specified graphics state to this resource dictionary
/// and returns its local resource name.
/// </summary>
public string AddExtGState(PdfExtGState extGState)
{
string name;
if (!_resources.TryGetValue(extGState, out name))
{
name = NextExtGStateName;
_resources[extGState] = name;
if (extGState.Reference == null)
{
Owner._irefTable.Add(extGState);
}
ExtGStates.Elements[name] = extGState.Reference;
}
return(name);
}
/// <summary>
/// Gets a PdfExtGState with the key 'CA' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGStateStroke(double alpha, bool overprint)
{
string key = PdfExtGState.MakeKey(alpha, overprint);
PdfExtGState extGState;
if (!_strokeAlphaValues.TryGetValue(key, out extGState))
{
extGState = new PdfExtGState(Owner);
//extGState.Elements[PdfExtGState.Keys.CA] = new PdfReal(alpha);
extGState.StrokeAlpha = alpha;
if (overprint)
{
extGState.StrokeOverprint = true;
extGState.Elements.SetInteger(PdfExtGState.Keys.OPM, 1);
}
_strokeAlphaValues[key] = extGState;
}
return extGState;
}
/// <summary>
/// Gets a PdfExtGState with the key 'CA' set to the specified alpha value.
/// </summary>
public PdfExtGState GetExtGStateStroke(double alpha, bool overprint)
{
string key = PdfExtGState.MakeKey(alpha, overprint);
PdfExtGState extGState;
if (!_strokeAlphaValues.TryGetValue(key, out extGState))
{
extGState = new PdfExtGState(Owner);
//extGState.Elements[PdfExtGState.Keys.CA] = new PdfReal(alpha);
extGState.StrokeAlpha = alpha;
if (overprint)
{
extGState.StrokeOverprint = true;
extGState.Elements.SetInteger(PdfExtGState.Keys.OPM, 1);
}
_strokeAlphaValues[key] = extGState;
}
return(extGState);
}
/// <summary>
/// Realizes the specified graphic state.
/// </summary>
public void RealizeExtGState(PdfExtGState xgState)
{
string gsName = this.writer.Resources.AddExtGState(xgState);
this.writer.WriteLiteral(gsName + " gs\n");
}
/// <summary>
/// Writes a Path to the content stream.
/// </summary>
private void WritePath(Path path)
{
WriteSaveState("begin Path", path.Name);
// Transform also affects clipping and opacity mask
if (path.RenderTransform != null && this.renderMode == RenderMode.Default)
{
MultiplyTransform(path.RenderTransform);
WriteRenderTransform(path.RenderTransform);
}
if (path.Clip != null && this.renderMode == RenderMode.Default)
WriteClip(path.Clip);
if (path.Opacity < 1)
MultiplyOpacity(path.Opacity);
if (path.OpacityMask != null)
WriteOpacityMask(path.OpacityMask);
if (path.Fill == null)
{
if (path.Stroke != null)
{
#if true
WriteStrokeGeometry(path);
#else
// Just stroke the path
RealizeStroke(path);
WriteGeometry(path.Data);
WritePathFillStroke(path);
#endif
}
else
Debug.Assert(false, "??? Path with neither Stroke nor Fill encountered.");
}
else
{
SolidColorBrush sBrush;
LinearGradientBrush lgBrush;
RadialGradientBrush rgBrush;
ImageBrush iBrush;
VisualBrush vBrush;
if ((sBrush = path.Fill as SolidColorBrush) != null)
{
Color color = sBrush.Color;
double opacity = Opacity * color.ScA;
if (opacity < 1)
RealizeFillOpacity(opacity);
WriteRgb(color, " rg\n");
if (path.Stroke != null)
RealizeStroke(path);
WriteGeometry(path.Data);
WritePathFillStroke(path);
}
else if ((lgBrush = path.Fill as LinearGradientBrush) != null)
{
// TODO: For better visual compatibility use a Shading Pattern if Opacity is not 1 and
// the Stroke Style is not solid. Acrobat 8 ignores this case.
PdfExtGState xgState = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
xgState.SetDefault1();
double opacity = Opacity * lgBrush.Opacity; ;
if (opacity < 1)
{
xgState.StrokeAlpha = opacity;
xgState.NonStrokeAlpha = opacity;
}
RealizeExtGState(xgState);
// 1st draw fill
if (lgBrush.GradientStops.HasTransparency)
{
// Create a FormXObject with a soft mask
PdfFormXObject form = LinearShadingBuilder.BuildFormFromLinearGradientBrush(Context, lgBrush, path.Data);
string foName = Resources.AddForm(form);
WriteLiteral(foName + " Do\n");
}
else
{
// Create just a shading
PdfShading shading = LinearShadingBuilder.BuildShadingFromLinearGradientBrush(Context, lgBrush);
string shName = Resources.AddShading(shading);
WriteLiteral("q\n");
WriteClip(path.Data);
WriteLiteral("BX " + shName + " sh EX Q\n");
}
// 2nd draw stroke
if (path.Stroke != null)
WriteStrokeGeometry(path);
}
else if ((rgBrush = path.Fill as RadialGradientBrush) != null)
{
PdfExtGState xgState = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
xgState.SetDefault1();
double avGradientOpacity = rgBrush.GradientStops.GetAverageAlpha(); // HACK
double opacity = Opacity * rgBrush.Opacity * avGradientOpacity;
if (opacity < 1)
{
xgState.StrokeAlpha = opacity;
xgState.NonStrokeAlpha = opacity;
}
//RealizeExtGState(xgState);
#if true
XRect boundingBox = path.Data.GetBoundingBox();
// Always creates a pattern, because the background must be filled
PdfShadingPattern pattern = RadialShadingBuilder.BuildFromRadialGradientBrush(Context, rgBrush, boundingBox, Transform);
string paName = Resources.AddPattern(pattern);
// stream
// /CS0 cs /P0 scn
// /GS0 gs
// 0 480 180 -90 re
// f*
// endstream
// endobj
WriteLiteral("/Pattern cs " + paName + " scn\n");
// move to here: RealizeExtGState(xgState);
RealizeExtGState(xgState);
WriteGeometry(path.Data);
if (path.Data.FillRule == FillRule.NonZero) // NonZero means Winding
WriteLiteral("f\n");
else
WriteLiteral("f*\n");
#else
#if true
// 1st draw fill
if (rgBrush.GradientStops.HasTransparentColors)
{
// Create a FormXObject with a soft mask
PdfFormXObject form = ShadingBuilder.BuildFormFromRadialGradientBrush(Context, rgBrush, path.Data);
string foName = Resources.AddForm(form);
WriteLiteral(foName + " Do\n");
}
else
{
// Create just a shading
PdfShading shading = ShadingBuilder.BuildShadingFromRadialGradientBrush(Context, rgBrush);
string shName = Resources.AddShading(shading);
WriteLiteral("q\n");
WriteClip(path.Data);
WriteLiteral("BX " + shName + " sh EX Q\n");
}
#else
// Establish graphic state dictionary
PdfExtGState extGState = new PdfExtGState(Context.PdfDocument);
Context.PdfDocument.Internals.AddObject(extGState);
string gsName = Resources.AddExtGState(extGState);
WriteLiteral(gsName + " gs\n");
// 1st draw fill
PdfShading shading = ShadingBuilder.BuildFormFromRadialGradientBrush(Context, rgBrush); //, extGState);
string shName = Resources.AddShading(shading);
WriteClip(path.Data);
WriteLiteral("BX " + shName + " sh EX\n");
#endif
#endif
// 2nd draw stroke
if (path.Stroke != null)
WriteStrokeGeometry(path);
}
else if ((iBrush = path.Fill as ImageBrush) != null)
{
PdfExtGState xgState = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
xgState.SetDefault1();
double opacity = Opacity * iBrush.Opacity;
if (opacity < 1)
{
xgState.StrokeAlpha = opacity;
xgState.NonStrokeAlpha = opacity;
}
RealizeExtGState(xgState);
// 1st draw fill
PdfTilingPattern pattern = TilingPatternBuilder.BuildFromImageBrush(Context, iBrush, Transform);
string name = Resources.AddPattern(pattern);
WriteLiteral("/Pattern cs " + name + " scn\n");
WriteGeometry(path.Data);
WritePathFillStroke(path);
// 2nd draw stroke
if (path.Stroke != null)
WriteStrokeGeometry(path);
}
else if ((vBrush = path.Fill as VisualBrush) != null)
{
PdfExtGState xgState = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
xgState.SetDefault1();
double opacity = Opacity * vBrush.Opacity;
if (opacity < 1)
{
xgState.StrokeAlpha = opacity;
xgState.NonStrokeAlpha = opacity;
}
RealizeExtGState(xgState);
// 1st draw fill
PdfTilingPattern pattern = TilingPatternBuilder.BuildFromVisualBrush(Context, vBrush, Transform);
string name = Resources.AddPattern(pattern);
WriteLiteral("/Pattern cs " + name + " scn\n");
WriteGeometry(path.Data);
WritePathFillStroke(path);
// 2nd draw stroke
if (path.Stroke != null)
WriteStrokeGeometry(path);
}
else
{
Debug.Assert(false, "Unknown brush type encountered.");
}
}
WriteRestoreState("end Path", path.Name);
}
/// <summary>
/// Realizes the specified graphic state.
/// </summary>
public void RealizeExtGState(PdfExtGState xgState)
{
this.graphicsState.RealizeExtGState(xgState);
}
/// <summary>
/// Adds the specified graphics state to this resource dictionary
/// and returns its local resource name.
/// </summary>
public string AddExtGState(PdfExtGState extGState)
{
string name;
if (!this.resources.TryGetValue(extGState, out name))
{
name = NextExtGStateName;
this.resources[extGState] = name;
if (extGState.Reference == null)
Owner.irefTable.Add(extGState);
ExtGStates.Elements[name] = extGState.Reference;
}
return name;
}
void RealizeLinearGradientBrush(LinearGradientBrush brush, XForm xform)
{
XMatrix matrix = this.currentTransform;
PdfShadingPattern pattern = new PdfShadingPattern(this.writer.Owner);
pattern.Elements[PdfShadingPattern.Keys.PatternType] = new PdfInteger(2); // shading pattern
// Setup shading
PdfShading shading = new PdfShading(this.writer.Owner);
PdfColorMode colorMode = PdfColorMode.Rgb; //this.document.Options.ColorMode;
PdfDictionary function = BuildShadingFunction(brush.GradientStops, colorMode);
function.Elements.SetString("/@", "This is the shading function of a LinearGradientBrush");
shading.Elements[PdfShading.Keys.Function] = function;
shading.Elements[PdfShading.Keys.ShadingType] = new PdfInteger(2); // Axial shading
//if (colorMode != PdfColorMode.Cmyk)
shading.Elements[PdfShading.Keys.ColorSpace] = new PdfName("/DeviceRGB");
//else
//shading.Elements[Keys.ColorSpace] = new PdfName("/DeviceCMYK");
//double x1 = 0, y1 = 0, x2 = 0, y2 = 0;
double x1 = brush.StartPoint.X;
double y1 = brush.StartPoint.Y;
double x2 = brush.EndPoint.X;
double y2 = brush.EndPoint.Y;
shading.Elements[PdfShading.Keys.Coords] = new PdfLiteral("[{0:0.###} {1:0.###} {2:0.###} {3:0.###}]", x1, y1, x2, y2);
// old: Elements[Keys.Background] = new PdfRawItem("[0 1 1]");
// old: Elements[Keys.Domain] =
shading.Elements[PdfShading.Keys.Extend] = new PdfLiteral("[true true]");
// Setup pattern
pattern.Elements[PdfShadingPattern.Keys.Shading] = shading;
pattern.Elements[PdfShadingPattern.Keys.Matrix] = PdfLiteral.FromMatrix(matrix); // new PdfLiteral("[" + PdfEncoders.ToString(matrix) + "]");
string name = this.writer.Resources.AddPattern(pattern);
this.writer.WriteLiteral("/Pattern cs\n", name);
this.writer.WriteLiteral("{0} scn\n", name);
double alpha = brush.Opacity * brush.GradientStops.GetAverageAlpha();
if (alpha < 1 && this.writer.renderMode == RenderMode.Default)
{
#if true
PdfExtGState extGState = this.writer.Owner.ExtGStateTable.GetExtGStateNonStroke(alpha);
string gs = this.writer.Resources.AddExtGState(extGState);
this.writer.WriteLiteral("{0} gs\n", gs);
#else
#if true
if (xform == null)
{
PdfExtGState extGState = this.writer.Owner.ExtGStateTable.GetExtGStateNonStroke(alpha);
string gs = this.writer.Resources.AddExtGState(extGState);
this.writer.WriteGraphicState(extGState);
}
else
{
//PdfFormXObject pdfForm = this.writer.Owner.FormTable.GetForm(form);
PdfFormXObject pdfForm = xform.pdfForm;
pdfForm.Elements.SetString("/@", "This is the Form XObject of the soft mask");
string formName = this.writer.Resources.AddForm(pdfForm);
PdfTransparencyGroupAttributes tgAttributes = new PdfTransparencyGroupAttributes(this.writer.Owner);
//this.writer.Owner.Internals.AddObject(tgAttributes);
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
// Set reference to transparency group attributes
pdfForm.Elements.SetObject(PdfFormXObject.Keys.Group, tgAttributes);
pdfForm.Elements[PdfFormXObject.Keys.Matrix] = new PdfLiteral("[1.001 0 0 1.001 0.001 0.001]");
PdfSoftMask softmask = new PdfSoftMask(this.writer.Owner);
this.writer.Owner.Internals.AddObject(softmask);
softmask.Elements.SetString("/@", "This is the soft mask");
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, pdfForm);
//pdfForm.Elements.SetName(PdfFormXObject.Keys.Type, "Group");
//pdfForm.Elements.SetName(PdfFormXObject.Keys.ss.Ss.Type, "Group");
PdfExtGState extGState = new PdfExtGState(this.writer.Owner);
this.writer.Owner.Internals.AddObject(extGState);
extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
this.writer.WriteGraphicState(extGState);
}
#else
XForm form = new XForm(this.writer.Owner, 220, 140);
XGraphics formGfx = XGraphics.FromForm(form);
// draw something
//XSolidBrush xbrush = new XSolidBrush(XColor.FromArgb(128, 128, 128));
XLinearGradientBrush xbrush = new XLinearGradientBrush(new XPoint(0, 0), new XPoint(220,0), XColors.White, XColors.Black);
formGfx.DrawRectangle(xbrush, -10000, -10000, 20000, 20000);
//formGfx.DrawString("Text, Graphics, Images, and Forms", new XFont("Verdana", 10, XFontStyle.Regular), XBrushes.Navy, 3, 0, XStringFormat.TopLeft);
formGfx.Dispose();
// Close form
form.Finish();
PdfFormXObject pdfForm = this.writer.Owner.FormTable.GetForm(form);
string formName = this.writer.Resources.AddForm(pdfForm);
//double x = 20, y = 20;
//double cx = 1;
//double cy = 1;
//this.writer.AppendFormat("q {2:0.###} 0 0 -{3:0.###} {0:0.###} {4:0.###} cm 100 Tz {5} Do Q\n",
// x, y, cx, cy, y + 0, formName);
//this.writer.AppendFormat("q {2:0.###} 0 0 -{3:0.###} {0:0.###} {4:0.###} cm 100 Tz {5} Do Q\n",
// x, y, cx, cy, y + 220/1.5, formName);
PdfTransparencyGroupAttributes tgAttributes = new PdfTransparencyGroupAttributes(this.writer.Owner);
this.writer.Owner.Internals.AddObject(tgAttributes);
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
// Set reference to transparency group attributes
pdfForm.Elements.SetReference(PdfFormXObject.Keys.Group, tgAttributes);
PdfSoftMask softmask = new PdfSoftMask(this.writer.Owner);
this.writer.Owner.Internals.AddObject(softmask);
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, pdfForm);
//pdfForm.Elements.SetName(PdfFormXObject.Keys.Type, "Group");
//pdfForm.Elements.SetName(PdfFormXObject.Keys.ss.Ss.Type, "Group");
PdfExtGState extGState = new PdfExtGState(this.writer.Owner);
this.writer.Owner.Internals.AddObject(extGState);
extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
this.writer.WriteGraphicState(extGState);
#endif
#endif
}
}
void RealizeRadialGradientBrush(RadialGradientBrush brush, XForm xform)
{
XMatrix matrix = new XMatrix(); // this.renderer.defaultViewMatrix;
//matrix.MultiplyPrepend(this.Transform);
matrix = this.currentTransform;
//matrix.MultiplyPrepend(XMatrix.CreateScaling(1.3, 1));
PdfShadingPattern pattern = new PdfShadingPattern(this.writer.Owner);
pattern.Elements[PdfShadingPattern.Keys.PatternType] = new PdfInteger(2); // shading pattern
// Setup shading
PdfShading shading = new PdfShading(this.writer.Owner);
PdfColorMode colorMode = PdfColorMode.Rgb; //this.document.Options.ColorMode;
PdfDictionary function = BuildShadingFunction(brush.GradientStops, colorMode);
shading.Elements[PdfShading.Keys.ShadingType] = new PdfInteger(3); // Radial shading
//if (colorMode != PdfColorMode.Cmyk)
shading.Elements[PdfShading.Keys.ColorSpace] = new PdfName("/DeviceRGB");
//else
//shading.Elements[Keys.ColorSpace] = new PdfName("/DeviceCMYK");
double x0 = brush.GradientOrigin.X;
double y0 = brush.GradientOrigin.Y;
double r0 = 0;
double x1 = brush.Center.X;
double y1 = brush.Center.Y;
double r1 = brush.RadiusX;
shading.Elements[PdfShading.Keys.Coords] =
new PdfLiteral("[{0:0.###} {1:0.###} {2:0.###} {3:0.###} {4:0.###} {5:0.###}]", x0, y0, r0, x1, y1, r1);
// old: Elements[Keys.Background] = new PdfRawItem("[0 1 1]");
// old: Elements[Keys.Domain] =
shading.Elements[PdfShading.Keys.Function] = function;
shading.Elements[PdfShading.Keys.Extend] = new PdfLiteral("[true true]");
// Setup pattern
pattern.Elements[PdfShadingPattern.Keys.Shading] = shading;
pattern.Elements[PdfShadingPattern.Keys.Matrix] = PdfLiteral.FromMatrix(matrix); // new PdfLiteral("[" + PdfEncoders.ToString(matrix) + "]");
string name = this.writer.Resources.AddPattern(pattern);
this.writer.WriteLiteral("/Pattern cs\n", name);
this.writer.WriteLiteral("{0} scn\n", name);
double alpha = brush.Opacity * brush.GradientStops.GetAverageAlpha();
if (alpha < 1)
{
#if true
PdfExtGState extGState = this.writer.Owner.ExtGStateTable.GetExtGStateNonStroke(alpha);
string gs = this.writer.Resources.AddExtGState(extGState);
this.writer.WriteLiteral("{0} gs\n", gs);
#else
if (xform == null)
{
PdfExtGState extGState = this.writer.Owner.ExtGStateTable.GetExtGStateNonStroke(alpha);
string gs = this.writer.Resources.AddExtGState(extGState);
this.writer.WriteGraphicState(extGState);
}
else
{
//PdfFormXObject pdfForm = this.writer.Owner.FormTable.GetForm(form);
PdfFormXObject pdfForm = xform.pdfForm;
pdfForm.Elements.SetString("/@", "This is the Form XObject of the soft mask");
string formName = this.writer.Resources.AddForm(pdfForm);
PdfTransparencyGroupAttributes tgAttributes = new PdfTransparencyGroupAttributes(this.writer.Owner);
//this.writer.Owner.Internals.AddObject(tgAttributes);
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
// Set reference to transparency group attributes
pdfForm.Elements.SetObject(PdfFormXObject.Keys.Group, tgAttributes);
pdfForm.Elements[PdfFormXObject.Keys.Matrix] = new PdfLiteral("[1.001 0 0 1.001 0.001 0.001]");
PdfSoftMask softmask = new PdfSoftMask(this.writer.Owner);
this.writer.Owner.Internals.AddObject(softmask);
softmask.Elements.SetString("/@", "This is the soft mask");
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, pdfForm);
//pdfForm.Elements.SetName(PdfFormXObject.Keys.Type, "Group");
//pdfForm.Elements.SetName(PdfFormXObject.Keys.ss.Ss.Type, "Group");
PdfExtGState extGState = new PdfExtGState(this.writer.Owner);
this.writer.Owner.Internals.AddObject(extGState);
extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
this.writer.WriteGraphicState(extGState);
}
#endif
}
}
/// <summary>
/// Adds the specified graphics state to this resource dictionary
/// and returns its local resource name.
/// </summary>
public string AddExtGState(PdfExtGState extGState)
{
string name = (string)this.resources[extGState];
if (name == null)
{
name = NextExtGStateName;
this.resources[extGState] = name;
if (extGState.Reference == null)
this.Owner.irefTable.Add(extGState);
ExtGStates.Elements[name] = extGState.Reference;
}
return name;
}
public void WriteGraphicsState(PdfExtGState extGState)
{
string name = Resources.AddExtGState(extGState);
WriteLiteral(name + " gs\n");
}