| public WriteClip ( PdfSharp.Xps.XpsModel.PathGeometry geo ) : void | ||
| geo | PdfSharp.Xps.XpsModel.PathGeometry | |
| return | void | |
/// <summary>
/// Builds a PdfFormXObject from the specified brush.
/// // If a gradient contains transparency, a soft mask is created an added to the specified graphic state.
/// </summary>
PdfFormXObject BuildForm(RadialGradientBrush brush, PathGeometry geometry)
{
PdfFormXObject pdfForm = Context.PdfDocument.Internals.CreateIndirectObject <PdfFormXObject>();
// HACK
pdfForm.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(0, 640, 480, 0));
// Transparency group of the form
//<<
// /I true
// /K false
// /S /Transparency
// /Type /Group
//>>
PdfTransparencyGroupAttributes tgPrimaryForm = Context.PdfDocument.Internals.CreateIndirectObject <PdfTransparencyGroupAttributes>();
// not set by Acrobat: tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
tgPrimaryForm.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.I, true);
tgPrimaryForm.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.K, false);
pdfForm.Elements.SetReference(PdfFormXObject.Keys.Group, tgPrimaryForm);
// Shading
PdfShading shading = BuildShading(brush, 1, 1);
// ExtGState
//<<
// /AIS false
// /BM /Normal
// /ca 1
// /CA 1
// /op false
// /OP false
// /OPM 1
// /SA true
// /SMask 22 0 R
// /Type /ExtGState
//>>
PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
pdfExtGState.SetDefault1();
// Soft mask
PdfSoftMask softmask = BuildSoftMask(brush);
pdfExtGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
// PdfFormXObject
//<<
// /BBox [200.118 369.142 582.795 -141.094]
// /Group 11 0 R
// /Length 117
// /Matrix [1 0 0 1 0 0]
// /Resources
// <<
// /ColorSpace
// <<
// /CS0 8 0 R
// >>
// /ExtGState
// <<
// /GS0 23 0 R
// >>
// /Shading
// <<
// /Sh0 14 0 R
// >>
// >>
// /Subtype /Form
//>>
//stream
//q
//203.868 365.392 157.5 -97.5 re
//W* n
//q
//0 g
//1 i
///GS0 gs
//0.75 0 0 -0.75 200.1181183 369.1417236 cm
//BX /Sh0 sh EX Q
//Q
//endstream
PdfContentWriter writer = new PdfContentWriter(Context, pdfForm);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so we should do
writer.WriteClip(geometry);
//writer.WriteGraphicsState(extGState);
//writer.WriteLiteral("0 g\n");
writer.WriteLiteral(writer.Resources.AddExtGState(pdfExtGState) + " gs\n");
XMatrix transform = new XMatrix(); //(brush.Viewport.Width / viewBoxForm.width, 0, 0, brush.Viewport.Height / viewBoxForm.height, 0, 0);
writer.WriteMatrix(transform);
writer.WriteLiteral("BX " + writer.Resources.AddShading(shading) + " sh EX\n");
writer.EndContent();
return(pdfForm);
}
/// <summary>
/// Builds a PdfFormXObject from the specified brush.
/// // If a gradient contains transparency, a soft mask is created an added to the specified graphic state.
/// </summary>
PdfFormXObject BuildForm(RadialGradientBrush brush, PathGeometry geometry)
{
PdfFormXObject pdfForm = Context.PdfDocument.Internals.CreateIndirectObject<PdfFormXObject>();
// HACK
pdfForm.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(0, 640, 480, 0));
// Transparency group of the form
//<<
// /I true
// /K false
// /S /Transparency
// /Type /Group
//>>
PdfTransparencyGroupAttributes tgPrimaryForm = Context.PdfDocument.Internals.CreateIndirectObject<PdfTransparencyGroupAttributes>();
// not set by Acrobat: tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
tgPrimaryForm.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.I, true);
tgPrimaryForm.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.K, false);
pdfForm.Elements.SetReference(PdfFormXObject.Keys.Group, tgPrimaryForm);
// Shading
PdfShading shading = BuildShading(brush, 1, 1);
// ExtGState
//<<
// /AIS false
// /BM /Normal
// /ca 1
// /CA 1
// /op false
// /OP false
// /OPM 1
// /SA true
// /SMask 22 0 R
// /Type /ExtGState
//>>
PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
pdfExtGState.SetDefault1();
// Soft mask
PdfSoftMask softmask = BuildSoftMask(brush);
pdfExtGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
// PdfFormXObject
//<<
// /BBox [200.118 369.142 582.795 -141.094]
// /Group 11 0 R
// /Length 117
// /Matrix [1 0 0 1 0 0]
// /Resources
// <<
// /ColorSpace
// <<
// /CS0 8 0 R
// >>
// /ExtGState
// <<
// /GS0 23 0 R
// >>
// /Shading
// <<
// /Sh0 14 0 R
// >>
// >>
// /Subtype /Form
//>>
//stream
//q
//203.868 365.392 157.5 -97.5 re
//W* n
//q
//0 g
//1 i
///GS0 gs
//0.75 0 0 -0.75 200.1181183 369.1417236 cm
//BX /Sh0 sh EX Q
//Q
//endstream
PdfContentWriter writer = new PdfContentWriter(Context, pdfForm);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so we should do
writer.WriteClip(geometry);
//writer.WriteGraphicsState(extGState);
//writer.WriteLiteral("0 g\n");
writer.WriteLiteral(writer.Resources.AddExtGState(pdfExtGState) + " gs\n");
XMatrix transform = new XMatrix(); //(brush.Viewport.Width / viewBoxForm.width, 0, 0, brush.Viewport.Height / viewBoxForm.height, 0, 0);
writer.WriteMatrix(transform);
writer.WriteLiteral("BX " + writer.Resources.AddShading(shading) + " sh EX\n");
writer.EndContent();
return pdfForm;
}
