PdfTilingPattern BuildPattern(ImageBrush brush, XMatrix transform)
{
// Bounding box lays always at (0,0)
XRect bbox = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
XMatrix matrix = transform;
matrix.Prepend(new XMatrix(1, 0, 0, 1, brush.Viewport.X, brush.Viewport.Y));
if (brush.Transform != null)
{
matrix.Prepend(new XMatrix(brush.Transform.Matrix.m11, brush.Transform.Matrix.m12, brush.Transform.Matrix.m21,
brush.Transform.Matrix.m22, brush.Transform.Matrix.offsetX, brush.Transform.Matrix.offsetY));
}
// HACK by [email protected]
// Avoid extra thin lines at the right and at the bottom of original image
double xStep = brush.Viewport.Width + 1;
double yStep = brush.Viewport.Height + 1;
PdfTilingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject <PdfTilingPattern>();
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
// Set extended graphic state like Acrobat do
PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
pdfExtGState.SetDefault1();
PdfFormXObject pdfForm = BuildForm(brush);
PdfContentWriter writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so do we
//writer.WriteClip(bbox);
XMatrix transformation = new XMatrix();
double dx = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
double dy = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;
transformation = new XMatrix(dx, 0, 0, dy, 0, 0);
writer.WriteMatrix(transformation);
writer.WriteGraphicsState(pdfExtGState);
string name = writer.Resources.AddForm(pdfForm);
writer.WriteLiteral(name + " Do\n");
writer.EndContent();
return(pattern);
}
/// <summary>
/// Creates an XForm from an image brush.
/// </summary>
public static XForm FromImageBrush(DocumentRenderingContext context, ImageBrush brush)
{
XPImage xpImage = ImageBuilder.FromImageBrush(context, brush);
XImage ximage = xpImage.XImage;
double width = ximage.PixelWidth;
double height = ximage.PixelHeight;
// view box in point
// XRect box = new XRect(brush.Viewbox.X * 0.75, brush.Viewbox.Y * 0.75, brush.Viewbox.Width * 0.75, brush.Viewbox.Height * 0.75);
XRect box = new XRect(0, 0, width, height);
XForm xform = new XForm(context.PdfDocument, box);
PdfContentWriter formWriter = new PdfContentWriter(context, xform, RenderMode.Default);
Debug.Assert(ximage != null);
PdfFormXObject pdfForm = xform.PdfForm;
pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());
//formWriter.Size = brush.Viewport.Size;
formWriter.BeginContentRaw();
string imageID = formWriter.Resources.AddImage(new PdfImage(context.PdfDocument, ximage));
XMatrix matrix = new XMatrix();
double scaleX = brush.Viewport.Width / brush.Viewbox.Width * 4 / 3 * ximage.PointWidth;
double scaleY = brush.Viewport.Height / brush.Viewbox.Height * 4 / 3 * ximage.PointHeight;
matrix.TranslatePrepend(-brush.Viewbox.X, -brush.Viewbox.Y);
matrix.ScalePrepend(scaleX, scaleY);
matrix.TranslatePrepend(brush.Viewport.X / scaleX, brush.Viewport.Y / scaleY);
matrix = new XMatrix(width, 0, 0, -height, 0, height);
formWriter.WriteLiteral("q\n");
// TODO:WriteClip(path.Data);
//formWriter.WriteLiteral("{0:0.###} 0 0 -{1:0.###} {2:0.###} {3:0.###} cm 100 Tz {4} Do Q\n",
// matrix.M11, matrix.M22, matrix.OffsetX, matrix.OffsetY + brush.Viewport.Height, imageID);
formWriter.WriteMatrix(matrix);
formWriter.WriteLiteral(imageID + " Do Q\n");
formWriter.EndContent();
return(xform);
}
/// <summary>
/// Creates an XForm from an image brush.
/// </summary>
public static XForm FromImageBrush(DocumentRenderingContext context, ImageBrush brush)
{
XPImage xpImage = ImageBuilder.FromImageBrush(context, brush);
XImage ximage = xpImage.XImage;
double width = ximage.PixelWidth;
double height = ximage.PixelHeight;
// view box in point
// XRect box = new XRect(brush.Viewbox.X * 0.75, brush.Viewbox.Y * 0.75, brush.Viewbox.Width * 0.75, brush.Viewbox.Height * 0.75);
XRect box = new XRect(0, 0, width, height);
XForm xform = new XForm(context.PdfDocument, box);
PdfContentWriter formWriter = new PdfContentWriter(context, xform, RenderMode.Default);
Debug.Assert(ximage != null);
PdfFormXObject pdfForm = xform.PdfForm;
pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());
//formWriter.Size = brush.Viewport.Size;
formWriter.BeginContentRaw();
string imageID = formWriter.Resources.AddImage(new PdfImage(context.PdfDocument, ximage));
XMatrix matrix = new XMatrix();
double scaleX = brush.Viewport.Width / brush.Viewbox.Width * 4 / 3 * ximage.PointWidth;
double scaleY = brush.Viewport.Height / brush.Viewbox.Height * 4 / 3 * ximage.PointHeight;
matrix.TranslatePrepend(-brush.Viewbox.X, -brush.Viewbox.Y);
matrix.ScalePrepend(scaleX, scaleY);
matrix.TranslatePrepend(brush.Viewport.X / scaleX, brush.Viewport.Y / scaleY);
matrix = new XMatrix(width, 0, 0, -height, 0, height);
formWriter.WriteLiteral("q\n");
// TODO:WriteClip(path.Data);
//formWriter.WriteLiteral("{0:0.###} 0 0 -{1:0.###} {2:0.###} {3:0.###} cm 100 Tz {4} Do Q\n",
// matrix.M11, matrix.M22, matrix.OffsetX, matrix.OffsetY + brush.Viewport.Height, imageID);
formWriter.WriteMatrix(matrix);
formWriter.WriteLiteral(imageID + " Do Q\n");
formWriter.EndContent();
return xform;
}
/// <summary>
/// Builds the soft mask.
/// </summary>
PdfSoftMask BuildSoftMask(RadialGradientBrush brush)
{
Debug.Assert(brush.GradientStops.HasTransparency);
XRect viewBox = new XRect(0, 0, 360, 480); // HACK
//XForm xform = new XForm(Context.PdfDocument, viewBox);
PdfFormXObject form = Context.PdfDocument.Internals.CreateIndirectObject <PdfFormXObject>();
#if DEBUG
if (DevHelper.RenderComments)
{
form.Elements.SetString("/@comment", "This is the Form XObject of the soft mask");
}
#endif
form.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(viewBox));
// Transparency group of mask form
//<<
// /CS /DeviceGray
// /I false
// /K false
// /S /Transparency
// /Type /Group
//>>
PdfTransparencyGroupAttributes tgAttributes = Context.PdfDocument.Internals.CreateIndirectObject <PdfTransparencyGroupAttributes>();
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceGray");
tgAttributes.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.I, false);
tgAttributes.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.K, false);
// ExtGState of mask form
//<<
// /AIS false
// /BM /Normal
// /ca 1
// /CA 1
// /op false
// /OP false
// /OPM 1
// /SA true
// /SMask /None
// /Type /ExtGState
//>>
PdfExtGState pdfStateMaskFrom = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
pdfStateMaskFrom.SetDefault1();
// Shading of mask form
PdfShading shadingFrom = BuildShadingForSoftMask(brush);
////// 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]");
// Soft mask
//<<
// /G 21 0 R % form
// /S /Luminosity
// /Type /Mask
//>>
PdfSoftMask softmask = Context.PdfDocument.Internals.CreateIndirectObject <PdfSoftMask>(); // new PdfSoftMask(this.writer.Owner);
//extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
//this.writer.Owner.Internals.AddObject(softmask);
#if DEBUG
if (DevHelper.RenderComments)
{
softmask.Elements.SetString("/@comment", "This is the soft mask");
}
#endif
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, form);
// Create content of mask form
//<<
// /BBox [200.118 369.142 582.795 -141.094]
// /Group 16 0 R
// /Length 121
// /Matrix [1 0 0 1 0 0]
// /Resources
// <<
// /ExtGState
// <<
// /GS0 20 0 R
// >>
// /Shading
// <<
// /Sh0 19 0 R
// >>
// >>
// /Subtype /Form
//>>
//stream
// q
// 200.118 369.142 382.677 -510.236 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
form.Elements.SetReference(PdfFormXObject.Keys.Group, tgAttributes);
PdfContentWriter writer = new PdfContentWriter(Context, form);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so we should do
// why 0 480 360 -480 re ??
//writer.WriteClip(bbox);
//writer.WriteGraphicsState(extGState);
writer.WriteLiteral("1 i 0 g\n");
writer.WriteLiteral(writer.Resources.AddExtGState(pdfStateMaskFrom) + " 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(shadingFrom) + " sh EX\n");
writer.EndContent();
return(softmask);
}
PdfShadingPattern BuildPattern(RadialGradientBrush brush, XRect boundingBox, XMatrix transform)
{
//<<
// /BBox [0 0 600 760]
// /Length 123
// /Matrix [0.75 0 0 -0.75 0 480]
// /PaintType 1
// /PatternType 1
// /Resources
// <<
// /ColorSpace
// <<
// /CS0 12 0 R
// /CS1 12 0 R
// >>
// /ExtGState
// <<
// /GS0 10 0 R
// /GS1 16 0 R
// >>
// /Shading
// <<
// /Sh0 15 0 R
// >>
// >>
// /TilingType 3
// /Type /Pattern
// /XStep 600
// /YStep 1520
//>>
//stream
// /CS0 cs 1 0 0 scn
// 1 i
// /GS0 gs
// 0 0 600 759.999 re
// f
// q
// 0 0 600 760 re
// W n
// q
// 0 g
// /GS1 gs
// 1 0 0 0.5 0 0 cm
// BX /Sh0 sh EX Q
// Q
//endstream
XRect bbox = new XRect(-600, -700, 1200, 1520); // HACK
XMatrix matrix = transform;
//matrix.Prepend(brush.Transform.Matrix);
double xStep = 600;
double yStep = 1520; // HACK
PdfShadingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject <PdfShadingPattern>();
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
double dx = 2 * brush.RadiusX;
double dy = 2 * brush.RadiusY;
XRect brushBox = new XRect(brush.Center.X - brush.RadiusX, brush.Center.Y - brush.RadiusY, dx, dy);
Debug.Assert(dx * dy > 0, "Radius is 0.");
double scaleX, scaleY;
if (dx > dy)
{
scaleX = 1;
scaleY = dy / dx;
}
else
{
scaleX = dx / dy;
scaleY = 1;
}
PdfColorMode colorMode = PdfColorMode.Rgb;
PdfDictionary funcReflected;
PdfDictionary funcRegular = BuildShadingFunction(brush.GradientStops, false, colorMode, true, out funcReflected);
if (brush.SpreadMethod != SpreadMethod.Pad)
{
if (CanOptimizeForTwoColors(brush.GradientStops))
{
PdfDictionary dummy;
funcReflected = BuildShadingFunction(brush.GradientStops, false, colorMode, false, out dummy);
}
else
{
Context.PdfDocument.Internals.AddObject(funcRegular);
}
}
//PdfShading shading = BuildShading(brush, scaleX, scaleY);
int shadingCount = 1;
if (brush.SpreadMethod != SpreadMethod.Pad)
{
// TODO: Calculate number of required shadings
shadingCount = Convert.ToInt32(Math.Max(boundingBox.Width / (2 * brush.RadiusX), boundingBox.Height / (2 * brush.RadiusY)) + 1);
// HACK: Rule of thumb, better than nothing
shadingCount *= 2;
}
PdfShading[] shadings = new PdfShading[shadingCount];
// Create the shadings
for (int idx = 0; idx < shadingCount; idx++)
{
PdfShading shading = BuildShading2(brush, scaleX, scaleY, idx,
brush.SpreadMethod == SpreadMethod.Reflect && idx % 2 == 1 ? funcReflected : funcRegular);
shadings[idx] = shading;
}
PdfContentWriter writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Fill background (even if spread method is not pad)
writer.WriteLiteral("q /DeviceRGB cs\n");
//writer.WriteLiteral(PdfEncoders.ToString(clr0, colorMode) + " rg 1 i\n");
writer.WriteLiteral(PdfEncoders.ToString(brush.GradientStops[brush.GradientStops.Count - 1].Color, PdfColorMode.Rgb) + " rg 1 i\n");
writer.WriteLiteral("1 i\n");
PdfExtGState gs = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
gs.SetDefault1();
writer.WriteGraphicsState(gs);
writer.WriteLiteral("0 0 600 760 re f\n");
XMatrix mat = brush.Transform.Matrix;
if (!mat.IsIdentity)
{
writer.WriteMatrix(mat);
}
// Just work: silly loop thru shadings
for (int idx = shadingCount - 1; idx >= 0; idx--)
{
writer.WriteLiteral("q 0 0 600 760 re W n\n");
writer.WriteLiteral("q 0 g\n");
gs = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
gs.SetDefault2();
writer.WriteGraphicsState(gs);
XMatrix transformation = new XMatrix(scaleX, 0, 0, scaleY, 0, 0);
writer.WriteMatrix(transformation);
string shName = writer.Resources.AddShading(shadings[idx]);
writer.WriteLiteral("BX " + shName + " sh EX Q Q\n");
}
writer.WriteLiteral("Q\n");
writer.EndContent();
return(pattern);
}
/// <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);
}
PdfTilingPattern BuildPattern(ImageBrush brush, XMatrix transform)
{
// Bounding box lays always at (0,0)
XRect bbox = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
#if true
XMatrix matrix = transform;
matrix.Prepend(new XMatrix(1, 0, 0, 1, brush.Viewport.X, brush.Viewport.Y));
if (brush.Transform != null)
{
matrix.Prepend(new XMatrix(brush.Transform.Matrix.m11, brush.Transform.Matrix.m12, brush.Transform.Matrix.m21,
brush.Transform.Matrix.m22, brush.Transform.Matrix.offsetX, brush.Transform.Matrix.offsetY));
}
#else
double c = 1;
XMatrix matrix = new XMatrix(1 * c, 0, 0, 1 * c, brush.Viewport.X * c, brush.Viewport.Y * c); // HACK: 480
XMatrix t = transform;
//t.Invert();
t.Prepend(matrix);
//t.TranslateAppend(brush.Viewport.X , brush.Viewport.Y);
//matrix.Append(t);
matrix = t;
#endif
double xStep = brush.Viewport.Width;
double yStep = brush.Viewport.Height;
// PdfTilingPattern
//<<
// /BBox [0 0 240 120]
// /Length 74
// /Matrix [0.75 0 0 -0.75 0 480]
// /PaintType 1
// /PatternType 1
// /Resources
// <<
// /ExtGState
// <<
// /GS0 10 0 R
// >>
// /XObject
// <<
// /Fm0 17 0 R
// >>
// >>
// /TilingType 3
// /Type /Pattern
// /XStep 480
// /YStep 640
//>>
//stream
// q
// 0 0 240 120 re
// W n
// q
// 2.3999939 0 0 1.1999969 0 0 cm
// /GS0 gs
// /Fm0 Do
// Q
//Q
//endstream
PdfTilingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject <PdfTilingPattern>();
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
// Set extended graphic state like Acrobat do
PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
pdfExtGState.SetDefault1();
PdfFormXObject pdfForm = BuildForm(brush);
//XRect viewBoxForm = new XRect(0, 0, 640, 480);
PdfContentWriter writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so do we
//writer.WriteClip(bbox);
XMatrix transformation = new XMatrix();
double dx = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
double dy = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;
transformation = new XMatrix(dx, 0, 0, dy, 0, 0);
writer.WriteMatrix(transformation);
writer.WriteGraphicsState(pdfExtGState);
string name = writer.Resources.AddForm(pdfForm);
writer.WriteLiteral(name + " Do\n");
writer.EndContent();
return(pattern);
}
/// <summary>
/// Builds a PdfFormXObject from the specified brush.
/// </summary>
PdfFormXObject BuildForm(ImageBrush brush)
{
//<<
// /BBox [0 100 100 0]
// /Length 65
// /Matrix [1 0 0 1 0 0]
// /Resources
// <<
// /ColorSpace
// <<
// /CS0 15 0 R
// >>
// /ExtGState
// <<
// /GS0 10 0 R
// >>
// /ProcSet [/PDF /ImageC /ImageI]
// /XObject
// <<
// /Im0 16 0 R
// >>
// >>
// /Subtype /Form
//>>
//stream
// q
// 0 0 100 100 re
// W n
// q
// /GS0 gs
// 100 0 0 -100 0 100 cm
// /Im0 Do
// Q
//Q
//endstream
PdfFormXObject pdfForm = Context.PdfDocument.Internals.CreateIndirectObject <PdfFormXObject>();
XPImage xpImage = ImageBuilder.FromImageBrush(Context, brush);
XImage ximage = xpImage.XImage;
ximage.Interpolate = false;
double width = ximage.PixelWidth;
double height = ximage.PixelHeight;
pdfForm.DpiX = ximage.HorizontalResolution;
pdfForm.DpiY = ximage.VerticalResolution;
// view box in point
// XRect box = new XRect(brush.Viewbox.X * 0.75, brush.Viewbox.Y * 0.75, brush.Viewbox.Width * 0.75, brush.Viewbox.Height * 0.75);
XRect box = new XRect(0, 0, width, height);
pdfForm.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(0, height, width, 0));
pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());
PdfContentWriter writer = new PdfContentWriter(Context, pdfForm);
Debug.Assert(ximage != null);
//PdfFormXObject pdfForm = xform.PdfForm;
pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());
//formWriter.Size = brush.Viewport.Size;
writer.BeginContentRaw();
string imageID = writer.Resources.AddImage(new PdfImage(Context.PdfDocument, ximage));
XMatrix matrix = new XMatrix();
//double scaleX = brush.Viewport.Width / brush.Viewbox.Width * 4 / 3 * ximage.PointWidth;
//double scaleY = brush.Viewport.Height / brush.Viewbox.Height * 4 / 3 * ximage.PointHeight;
//matrix.TranslatePrepend(-brush.Viewbox.X, -brush.Viewbox.Y);
//matrix.ScalePrepend(scaleX, scaleY);
//matrix.TranslatePrepend(brush.Viewport.X / scaleX, brush.Viewport.Y / scaleY);
//double scaleX = 96 / ximage.HorizontalResolution;
//double scaleY = 96 / ximage.VerticalResolution;
//width *= scaleX;
//height *= scaleY;
matrix = new XMatrix(width, 0, 0, -height, 0, height);
writer.WriteLiteral("q\n");
// TODO:WriteClip(path.Data);
//formWriter.WriteLiteral("{0:0.###} 0 0 -{1:0.###} {2:0.###} {3:0.###} cm 100 Tz {4} Do Q\n",
// matrix.M11, matrix.M22, matrix.OffsetX, matrix.OffsetY + brush.Viewport.Height, imageID);
writer.WriteMatrix(matrix);
writer.WriteLiteral(imageID + " Do Q\n");
#if DEBUG
if (DevHelper.BorderPatterns)
{
writer.WriteLiteral("1 1 1 rg 0 0 m {0:0.###} 0 l {0:0.###} {1:0.###} l 0 {1:0.###} l h s\n", width, height);
}
#endif
writer.EndContent();
return(pdfForm);
}
PdfTilingPattern BuildPattern(VisualBrush brush, XMatrix transform)
{
// Bounding box lays always at (0,0)
XRect bbox = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
XMatrix matrix = transform;
matrix.Prepend(new XMatrix(1, 0, 0, 1, brush.Viewport.X, brush.Viewport.Y));
if (brush.Transform != null)
{
matrix.Prepend(new XMatrix(brush.Transform.Value.M11, brush.Transform.Value.M12,
brush.Transform.Value.M21, brush.Transform.Value.M22,
brush.Transform.Value.OffsetX, brush.Transform.Value.OffsetY));
}
// Set X Step beyond the viewport if tilemode is set to none since
// there is no other easy way to turn off tiling - NPJ
double xStep = brush.Viewport.Width * (brush.TileMode == TileMode.None ? 2 : 1);
double yStep = brush.Viewport.Height * (brush.TileMode == TileMode.None ? 2 : 1);
// PdfTilingPattern
//<<
// /BBox [0 0 240 120]
// /Length 74
// /Matrix [0.75 0 0 -0.75 0 480]
// /PaintType 1
// /PatternType 1
// /Resources
// <<
// /ExtGState
// <<
// /GS0 10 0 R
// >>
// /XObject
// <<
// /Fm0 17 0 R
// >>
// >>
// /TilingType 3
// /Type /Pattern
// /XStep 480
// /YStep 640
//>>
//stream
// q
// 0 0 240 120 re
// W n
// q
// 2.3999939 0 0 1.1999969 0 0 cm
// /GS0 gs
// /Fm0 Do
// Q
//Q
//endstream
var pattern = new PdfTilingPattern(Context.PdfDocument);
Context.PdfDocument.Internals.AddObject(pattern);
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
// Set extended graphic state like Acrobat do
var pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
pdfExtGState.SetDefault1();
var pdfForm = BuildForm(brush);
var writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so do we
//writer.WriteClip(bbox);
XMatrix transformation = new XMatrix();
double dx = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
double dy = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;
transformation = new XMatrix(dx, 0, 0, dy, 0, 0);
writer.WriteMatrix(transformation);
writer.WriteGraphicsState(pdfExtGState);
string name = writer.Resources.AddForm(pdfForm);
writer.WriteLiteral(name + " Do\n");
writer.EndContent();
return(pattern);
}
/// <summary>
/// Builds the soft mask.
/// </summary>
PdfSoftMask BuildSoftMask(RadialGradientBrush brush)
{
Debug.Assert(brush.GradientStops.HasTransparency);
XRect viewBox = new XRect(0, 0, 360, 480); // HACK
//XForm xform = new XForm(Context.PdfDocument, viewBox);
PdfFormXObject form = Context.PdfDocument.Internals.CreateIndirectObject<PdfFormXObject>();
#if DEBUG
if (DevHelper.RenderComments)
form.Elements.SetString("/@comment", "This is the Form XObject of the soft mask");
#endif
form.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(viewBox));
// Transparency group of mask form
//<<
// /CS /DeviceGray
// /I false
// /K false
// /S /Transparency
// /Type /Group
//>>
PdfTransparencyGroupAttributes tgAttributes = Context.PdfDocument.Internals.CreateIndirectObject<PdfTransparencyGroupAttributes>();
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceGray");
tgAttributes.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.I, false);
tgAttributes.Elements.SetBoolean(PdfTransparencyGroupAttributes.Keys.K, false);
// ExtGState of mask form
//<<
// /AIS false
// /BM /Normal
// /ca 1
// /CA 1
// /op false
// /OP false
// /OPM 1
// /SA true
// /SMask /None
// /Type /ExtGState
//>>
PdfExtGState pdfStateMaskFrom = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
pdfStateMaskFrom.SetDefault1();
// Shading of mask form
PdfShading shadingFrom = BuildShadingForSoftMask(brush);
////// 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]");
// Soft mask
//<<
// /G 21 0 R % form
// /S /Luminosity
// /Type /Mask
//>>
PdfSoftMask softmask = Context.PdfDocument.Internals.CreateIndirectObject<PdfSoftMask>(); // new PdfSoftMask(this.writer.Owner);
//extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
//this.writer.Owner.Internals.AddObject(softmask);
#if DEBUG
if (DevHelper.RenderComments)
softmask.Elements.SetString("/@comment", "This is the soft mask");
#endif
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, form);
// Create content of mask form
//<<
// /BBox [200.118 369.142 582.795 -141.094]
// /Group 16 0 R
// /Length 121
// /Matrix [1 0 0 1 0 0]
// /Resources
// <<
// /ExtGState
// <<
// /GS0 20 0 R
// >>
// /Shading
// <<
// /Sh0 19 0 R
// >>
// >>
// /Subtype /Form
//>>
//stream
// q
// 200.118 369.142 382.677 -510.236 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
form.Elements.SetReference(PdfFormXObject.Keys.Group, tgAttributes);
PdfContentWriter writer = new PdfContentWriter(Context, form);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so we should do
// why 0 480 360 -480 re ??
//writer.WriteClip(bbox);
//writer.WriteGraphicsState(extGState);
writer.WriteLiteral("1 i 0 g\n");
writer.WriteLiteral(writer.Resources.AddExtGState(pdfStateMaskFrom) + " 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(shadingFrom) + " sh EX\n");
writer.EndContent();
return softmask;
}
PdfShadingPattern BuildPattern(RadialGradientBrush brush, XRect boundingBox, XMatrix transform)
{
//<<
// /BBox [0 0 600 760]
// /Length 123
// /Matrix [0.75 0 0 -0.75 0 480]
// /PaintType 1
// /PatternType 1
// /Resources
// <<
// /ColorSpace
// <<
// /CS0 12 0 R
// /CS1 12 0 R
// >>
// /ExtGState
// <<
// /GS0 10 0 R
// /GS1 16 0 R
// >>
// /Shading
// <<
// /Sh0 15 0 R
// >>
// >>
// /TilingType 3
// /Type /Pattern
// /XStep 600
// /YStep 1520
//>>
//stream
// /CS0 cs 1 0 0 scn
// 1 i
// /GS0 gs
// 0 0 600 759.999 re
// f
// q
// 0 0 600 760 re
// W n
// q
// 0 g
// /GS1 gs
// 1 0 0 0.5 0 0 cm
// BX /Sh0 sh EX Q
// Q
//endstream
XRect bbox = new XRect(-600,-700, 1200, 1520); // HACK
XMatrix matrix = transform;
//matrix.Prepend(brush.Transform.Matrix);
double xStep = 600;
double yStep = 1520; // HACK
PdfShadingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject<PdfShadingPattern>();
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
double dx = 2 * brush.RadiusX;
double dy = 2 * brush.RadiusY;
XRect brushBox = new XRect(brush.Center.X - brush.RadiusX, brush.Center.Y - brush.RadiusY, dx, dy);
Debug.Assert(dx * dy > 0, "Radius is 0.");
double scaleX, scaleY;
if (dx > dy)
{
scaleX = 1;
scaleY = dy / dx;
}
else
{
scaleX = dx / dy;
scaleY = 1;
}
PdfColorMode colorMode = PdfColorMode.Rgb;
PdfDictionary funcReflected;
PdfDictionary funcRegular = BuildShadingFunction(brush.GradientStops, false, colorMode, true, out funcReflected);
if (brush.SpreadMethod != SpreadMethod.Pad)
{
if (CanOptimizeForTwoColors(brush.GradientStops))
{
PdfDictionary dummy;
funcReflected = BuildShadingFunction(brush.GradientStops, false, colorMode, false, out dummy);
}
else
{
Context.PdfDocument.Internals.AddObject(funcRegular);
}
}
//PdfShading shading = BuildShading(brush, scaleX, scaleY);
int shadingCount = 1;
if (brush.SpreadMethod != SpreadMethod.Pad)
{
// TODO: Calculate number of required shadings
shadingCount = Convert.ToInt32(Math.Max(boundingBox.width / (2 * brush.RadiusX), boundingBox.height / (2 * brush.RadiusY)) + 1);
// HACK: Rule of thumb, better than nothing
shadingCount *= 2;
}
PdfShading[] shadings = new PdfShading[shadingCount];
// Create the shadings
for (int idx = 0; idx < shadingCount; idx++)
{
PdfShading shading = BuildShading2(brush, scaleX, scaleY, idx,
brush.SpreadMethod == SpreadMethod.Reflect && idx % 2 == 1 ? funcReflected : funcRegular);
shadings[idx] = shading;
}
PdfContentWriter writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Fill background (even if spread method is not pad)
writer.WriteLiteral("q /DeviceRGB cs\n");
//writer.WriteLiteral(PdfEncoders.ToString(clr0, colorMode) + " rg 1 i\n");
writer.WriteLiteral(PdfEncoders.ToString(brush.GradientStops[brush.GradientStops.Count - 1].Color, PdfColorMode.Rgb) + " rg 1 i\n");
writer.WriteLiteral("1 i\n");
PdfExtGState gs = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
gs.SetDefault1();
writer.WriteGraphicsState(gs);
writer.WriteLiteral("0 0 600 760 re f\n");
XMatrix mat = brush.Transform.Matrix;
if (!mat.IsIdentity)
writer.WriteMatrix(mat);
// Just work: silly loop thru shadings
for (int idx = shadingCount - 1; idx >= 0; idx--)
{
writer.WriteLiteral("q 0 0 600 760 re W n\n");
writer.WriteLiteral("q 0 g\n");
gs = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
gs.SetDefault2();
writer.WriteGraphicsState(gs);
XMatrix transformation = new XMatrix(scaleX, 0, 0, scaleY, 0, 0);
writer.WriteMatrix(transformation);
string shName = writer.Resources.AddShading(shadings[idx]);
writer.WriteLiteral("BX " + shName + " sh EX Q Q\n");
}
writer.WriteLiteral("Q\n");
writer.EndContent();
return pattern;
}
/// <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;
}
PdfTilingPattern BuildPattern(ImageBrush brush, XMatrix transform)
{
// Bounding box lays always at (0,0)
XRect bbox = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
#if true
XMatrix matrix = transform;
matrix.Prepend(new XMatrix(1, 0, 0, 1, brush.Viewport.X, brush.Viewport.Y));
if (brush.Transform != null)
{
matrix.Prepend(new XMatrix(brush.Transform.Matrix.m11, brush.Transform.Matrix.m12, brush.Transform.Matrix.m21,
brush.Transform.Matrix.m22, brush.Transform.Matrix.offsetX, brush.Transform.Matrix.offsetY));
}
#else
double c = 1;
XMatrix matrix = new XMatrix(1 * c, 0, 0, 1 * c, brush.Viewport.X * c, brush.Viewport.Y * c); // HACK: 480
XMatrix t = transform;
//t.Invert();
t.Prepend(matrix);
//t.TranslateAppend(brush.Viewport.X , brush.Viewport.Y);
//matrix.Append(t);
matrix = t;
#endif
double xStep = brush.Viewport.Width;
double yStep = brush.Viewport.Height;
// PdfTilingPattern
//<<
// /BBox [0 0 240 120]
// /Length 74
// /Matrix [0.75 0 0 -0.75 0 480]
// /PaintType 1
// /PatternType 1
// /Resources
// <<
// /ExtGState
// <<
// /GS0 10 0 R
// >>
// /XObject
// <<
// /Fm0 17 0 R
// >>
// >>
// /TilingType 3
// /Type /Pattern
// /XStep 480
// /YStep 640
//>>
//stream
// q
// 0 0 240 120 re
// W n
// q
// 2.3999939 0 0 1.1999969 0 0 cm
// /GS0 gs
// /Fm0 Do
// Q
//Q
//endstream
PdfTilingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject<PdfTilingPattern>();
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
// Set extended graphic state like Acrobat do
PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject<PdfExtGState>();
pdfExtGState.SetDefault1();
PdfFormXObject pdfForm = BuildForm(brush);
//XRect viewBoxForm = new XRect(0, 0, 640, 480);
PdfContentWriter writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so do we
//writer.WriteClip(bbox);
XMatrix transformation = new XMatrix();
double dx = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
double dy = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;
transformation = new XMatrix(dx, 0, 0, dy, 0, 0);
writer.WriteMatrix(transformation);
writer.WriteGraphicsState(pdfExtGState);
string name = writer.Resources.AddForm(pdfForm);
writer.WriteLiteral(name + " Do\n");
writer.EndContent();
return pattern;
}
/// <summary>
/// Builds a PdfFormXObject from the specified brush.
/// </summary>
PdfFormXObject BuildForm(ImageBrush brush)
{
//<<
// /BBox [0 100 100 0]
// /Length 65
// /Matrix [1 0 0 1 0 0]
// /Resources
// <<
// /ColorSpace
// <<
// /CS0 15 0 R
// >>
// /ExtGState
// <<
// /GS0 10 0 R
// >>
// /ProcSet [/PDF /ImageC /ImageI]
// /XObject
// <<
// /Im0 16 0 R
// >>
// >>
// /Subtype /Form
//>>
//stream
// q
// 0 0 100 100 re
// W n
// q
// /GS0 gs
// 100 0 0 -100 0 100 cm
// /Im0 Do
// Q
//Q
//endstream
PdfFormXObject pdfForm = Context.PdfDocument.Internals.CreateIndirectObject<PdfFormXObject>();
XPImage xpImage = ImageBuilder.FromImageBrush(Context, brush);
XImage ximage = xpImage.XImage;
ximage.Interpolate = false;
double width = ximage.PixelWidth;
double height = ximage.PixelHeight;
pdfForm.DpiX = ximage.HorizontalResolution;
pdfForm.DpiY = ximage.VerticalResolution;
// view box in point
// XRect box = new XRect(brush.Viewbox.X * 0.75, brush.Viewbox.Y * 0.75, brush.Viewbox.Width * 0.75, brush.Viewbox.Height * 0.75);
XRect box = new XRect(0, 0, width, height);
pdfForm.Elements.SetRectangle(PdfFormXObject.Keys.BBox, new PdfRectangle(0, height, width, 0));
pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());
PdfContentWriter writer = new PdfContentWriter(Context, pdfForm);
Debug.Assert(ximage != null);
//PdfFormXObject pdfForm = xform.PdfForm;
pdfForm.Elements.SetMatrix(PdfFormXObject.Keys.Matrix, new XMatrix());
//formWriter.Size = brush.Viewport.Size;
writer.BeginContentRaw();
string imageID = writer.Resources.AddImage(new PdfImage(Context.PdfDocument, ximage));
XMatrix matrix = new XMatrix();
//double scaleX = brush.Viewport.Width / brush.Viewbox.Width * 4 / 3 * ximage.PointWidth;
//double scaleY = brush.Viewport.Height / brush.Viewbox.Height * 4 / 3 * ximage.PointHeight;
//matrix.TranslatePrepend(-brush.Viewbox.X, -brush.Viewbox.Y);
//matrix.ScalePrepend(scaleX, scaleY);
//matrix.TranslatePrepend(brush.Viewport.X / scaleX, brush.Viewport.Y / scaleY);
//double scaleX = 96 / ximage.HorizontalResolution;
//double scaleY = 96 / ximage.VerticalResolution;
//width *= scaleX;
//height *= scaleY;
matrix = new XMatrix(width, 0, 0, -height, 0, height);
writer.WriteLiteral("q\n");
// TODO:WriteClip(path.Data);
//formWriter.WriteLiteral("{0:0.###} 0 0 -{1:0.###} {2:0.###} {3:0.###} cm 100 Tz {4} Do Q\n",
// matrix.M11, matrix.M22, matrix.OffsetX, matrix.OffsetY + brush.Viewport.Height, imageID);
writer.WriteMatrix(matrix);
writer.WriteLiteral(imageID + " Do Q\n");
#if DEBUG
if (DevHelper.BorderPatterns)
writer.WriteLiteral("1 1 1 rg 0 0 m {0:0.###} 0 l {0:0.###} {1:0.###} l 0 {1:0.###} l h s\n", width, height);
#endif
writer.EndContent();
return pdfForm;
}
PdfTilingPattern BuildPattern(ImageBrush brush, XMatrix transform)
{
// Bounding box repects viewbox
//XRect bbox = new XRect(brush.Viewbox.X, brush.Viewbox.Y, brush.Viewbox.Width, brush.Viewbox.Height);
// double scalex = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
//BitmapImage src = new BitmapImage();
//BitmapSource cropbrush = BitmapSource.Create()
//CroppedBitmap cropbrush = new CroppedBitmap((BitmapSource)brush.ImageSource, new System.Windows.Int32Rect((int)brush.Viewbox.X, (int)brush.Viewbox.Y, (int)brush.Viewbox.Width, (int)brush.Viewbox.Height));
//using (var fileStream = new System.IO.FileStream("c:\\fullimage.png", System.IO.FileMode.Create))
//{
// BitmapEncoder encoder = new PngBitmapEncoder();
// encoder.Frames.Add(BitmapFrame.Create((BitmapSource)brush.ImageSource));
// encoder.Save(fileStream);
//}
double scaledpix = ((BitmapSource)brush.ImageSource).DpiX;
double scaledpiy = ((BitmapSource)brush.ImageSource).DpiY;
if (brush.Viewbox.X > 0 || brush.Viewbox.Y > 0)
{
CroppedBitmap cropbrush = new CroppedBitmap((BitmapSource)brush.ImageSource, new System.Windows.Int32Rect((int)Math.Round((brush.Viewbox.X / 96) * scaledpix), (int)Math.Round((brush.Viewbox.Y / 96) * scaledpiy), (int)Math.Round((brush.Viewbox.Width / 96) * scaledpiy), (int)Math.Round((brush.Viewbox.Height / 96) * scaledpiy)));
//cropbrush.DpiX = scaledpix;
//cropbrush.DpiY = scaledpiy;
brush.ImageSource = cropbrush;
//brush.Viewport = new System.Windows.Rect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
//brush.Viewbox = new System.Windows.Rect(0, 0, ((Math.Round((brush.Viewbox.Width / 96) * scaledpiy)) / scaledpiy * 96) , brush.Viewbox.Height);
brush.Viewbox = new System.Windows.Rect(0, 0, brush.Viewbox.Width, brush.Viewbox.Height);
}
//brush = new ImageBrush(cropbrush);
//BitmapSource
//BitmapSource. cropbrushbitmap = new BitmapSource(cropbrush);
//using (var fileStream = new System.IO.FileStream("c:\\cropimage.png", System.IO.FileMode.Create))
//{
// BitmapEncoder encoder = new PngBitmapEncoder();
// encoder.Frames.Add(BitmapFrame.Create(cropbrush));
// encoder.Save(fileStream);
//}
//XRect bbox = new XRect(brush.Viewport.X - brush.Viewbox.X, brush.Viewport.Y - brush.Viewbox.Y, brush.Viewbox.Width, brush.Viewbox.Height);
//XRect bbox = new XRect((brush.Viewbox.X / 96) * scaledpix, (brush.Viewbox.Y / 96) * scaledpiy, (brush.Viewbox.Width / 96) * scaledpix, (brush.Viewbox.Height / 96) * scaledpiy);
//XRect bbox = new XRect(0, 0, (brush.Viewport.Width / 96) * scaledpix, (brush.Viewport.Height / 96) * scaledpiy);
XRect bbox = new XRect(0, 0, brush.Viewport.Width, brush.Viewport.Height);
#if true
XMatrix matrix = transform;
//this only needs to be a translate and to offset the viewbox viewport difference
matrix.TranslatePrepend(brush.Viewport.X, brush.Viewport.Y);
//matrix.TranslatePrepend((brush.Viewport.X - brush.Viewbox.X)+2, (brush.Viewport.Y - brush.Viewbox.Y)+2);
if (brush.Transform != null)
{
matrix.Prepend(new XMatrix(brush.Transform.Value.M11, brush.Transform.Value.M12, brush.Transform.Value.M21,
brush.Transform.Value.M22, brush.Transform.Value.OffsetX,
brush.Transform.Value.OffsetY));
}
#else
double c = 1;
XMatrix matrix = new XMatrix(1 * c, 0, 0, 1 * c, brush.Viewport.X * c, brush.Viewport.Y * c); // HACK: 480
XMatrix t = transform;
//t.Invert();
t.Prepend(matrix);
//t.TranslateAppend(brush.Viewport.X , brush.Viewport.Y);
//matrix.Append(t);
matrix = t;
#endif
double xStep = brush.Viewport.Width + 1; // (brush.Viewbox.Width / 96) * scaledpix; //* (brush.TileMode == TileMode.None ? 2 : 1);
double yStep = brush.Viewport.Height + 1; // (brush.Viewbox.Height / 96) * scaledpiy; //* (brush.TileMode == TileMode.None ? 2 : 1);
// PdfTilingPattern
//<<
// /BBox [0 0 240 120]
// /Length 74
// /Matrix [0.75 0 0 -0.75 0 480]
// /PaintType 1
// /PatternType 1
// /Resources
// <<
// /ExtGState
// <<
// /GS0 10 0 R
// >>
// /XObject
// <<
// /Fm0 17 0 R
// >>
// >>
// /TilingType 3
// /Type /Pattern
// /XStep 480
// /YStep 640
//>>
//stream
// q
// 0 0 240 120 re
// W n
// q
// 2.3999939 0 0 1.1999969 0 0 cm
// /GS0 gs
// /Fm0 Do
// Q
//Q
//endstream
PdfTilingPattern pattern = Context.PdfDocument.Internals.CreateIndirectObject <PdfTilingPattern>();
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PatternType, 1); // Tiling
pattern.Elements.SetInteger(PdfTilingPattern.Keys.PaintType, 1); // Color
pattern.Elements.SetInteger(PdfTilingPattern.Keys.TilingType, 3); // Constant spacing and faster tiling
pattern.Elements.SetMatrix(PdfTilingPattern.Keys.Matrix, matrix);
pattern.Elements.SetRectangle(PdfTilingPattern.Keys.BBox, new PdfRectangle(bbox));
pattern.Elements.SetReal(PdfTilingPattern.Keys.XStep, xStep);
pattern.Elements.SetReal(PdfTilingPattern.Keys.YStep, yStep);
// Set extended graphic state like Acrobat do
PdfExtGState pdfExtGState = Context.PdfDocument.Internals.CreateIndirectObject <PdfExtGState>();
pdfExtGState.SetDefault1();
PdfFormXObject pdfForm = BuildForm(brush);
//XRect viewBoxForm = new XRect(0, 0, 640, 480);
PdfContentWriter writer = new PdfContentWriter(Context, pattern);
writer.BeginContentRaw();
// Acrobat 8 clips to bounding box, so do we
//writer.WriteClip(bbox);
XMatrix transformation = new XMatrix();
//double dx = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
//double dy = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;
double dx = brush.Viewport.Width / brush.Viewbox.Width * 96 / pdfForm.DpiX;
double dy = brush.Viewport.Height / brush.Viewbox.Height * 96 / pdfForm.DpiY;
transformation = new XMatrix(dx, 0, 0, dy, 0, 0);
writer.WriteMatrix(transformation);
writer.WriteGraphicsState(pdfExtGState);
string name = writer.Resources.AddForm(pdfForm);
writer.WriteLiteral(name + " Do\n");
writer.EndContent();
return(pattern);
}