private FormXObject CreateWatermark(Document document)
{
SKSize size = document.GetSize();
// 1. Create an external form object to represent the watermark!
FormXObject watermark = new FormXObject(document, size);
// 2. Inserting the contents of the watermark...
// 2.1. Create a content composer!
PrimitiveComposer composer = new PrimitiveComposer(watermark);
// 2.2. Inserting the contents...
// Set the font to use!
composer.SetFont(new fonts::StandardType1Font(document, fonts::StandardType1Font.FamilyEnum.Times, true, false), 120);
// Set the color to fill the text characters!
composer.SetFillColor(new DeviceRGBColor(115 / 255d, 164 / 255d, 232 / 255d));
// Apply transparency!
{
ExtGState state = new ExtGState(document);
state.FillAlpha = .3;
composer.ApplyState(state);
}
// Show the text!
composer.ShowText(
"PdfClown", // Text to show.
new SKPoint(size.Width / 2f, size.Height / 2f), // Anchor location: page center.
XAlignmentEnum.Center, // Horizontal placement (relative to the anchor): center.
YAlignmentEnum.Middle, // Vertical placement (relative to the anchor): middle.
50 // Rotation: 50-degree-counterclockwise.
);
// 2.3. Flush the contents into the watermark!
composer.Flush();
return(watermark);
}
public override void Scan(
ContentScanner.GraphicsState state
)
{
ExtGState extGState = state.Scanner.ContentContext.Resources.ExtGStates[Name];
extGState.ApplyTo(state);
}
private FormXObject CreateWatermark(
Document document
)
{
SizeF size = document.GetSize();
// 1. Create an external form object to represent the watermark!
FormXObject watermark = new FormXObject(document, size);
// 2. Inserting the contents of the watermark...
// 2.1. Create a content composer!
PrimitiveComposer composer = new PrimitiveComposer(watermark);
// 2.2. Inserting the contents...
// Set the font to use!
composer.SetFont(new fonts::StandardType1Font(document, fonts::StandardType1Font.FamilyEnum.Times, true, false), 120);
// Set the color to fill the text characters!
composer.SetFillColor(new DeviceRGBColor(115 / 255d, 164 / 255d, 232 / 255d));
// Apply transparency!
{
ExtGState state = new ExtGState(document);
state.FillAlpha = .3;
composer.ApplyState(state);
}
// Show the text!
composer.ShowText(
"PDFClown", // Text to show.
new PointF(size.Width / 2f, size.Height / 2f), // Anchor location: page center.
XAlignmentEnum.Center, // Horizontal placement (relative to the anchor): center.
YAlignmentEnum.Middle, // Vertical placement (relative to the anchor): middle.
50 // Rotation: 50-degree-counterclockwise.
);
// 2.3. Flush the contents into the watermark!
composer.Flush();
return watermark;
}
/*
* TODO: refresh should happen just before serialization, on document event (e.g. OnWrite())
*/
private void RefreshAppearance(
)
{
FormXObject normalAppearance;
RectangleF box = org.pdfclown.objects.Rectangle.Wrap(BaseDataObject[PdfName.Rect]).ToRectangleF();
{
AppearanceStates normalAppearances = Appearance.Normal;
normalAppearance = normalAppearances[null];
if (normalAppearance != null)
{
normalAppearance.Box = box;
normalAppearance.BaseDataObject.Body.SetLength(0);
}
else
{
normalAppearances[null] = normalAppearance = new FormXObject(Document, box);
}
}
PrimitiveComposer composer = new PrimitiveComposer(normalAppearance);
{
float yOffset = box.Height - Page.Box.Height;
MarkupTypeEnum markupType = MarkupType;
switch (markupType)
{
case MarkupTypeEnum.Highlight:
{
ExtGState defaultExtGState;
{
ExtGStateResources extGStates = normalAppearance.Resources.ExtGStates;
defaultExtGState = extGStates[HighlightExtGStateName];
if (defaultExtGState == null)
{
if (extGStates.Count > 0)
{
extGStates.Clear();
}
extGStates[HighlightExtGStateName] = defaultExtGState = new ExtGState(Document);
defaultExtGState.AlphaShape = false;
defaultExtGState.BlendMode = new List <BlendModeEnum>(new BlendModeEnum[] { BlendModeEnum.Multiply });
}
}
composer.ApplyState(defaultExtGState);
composer.SetFillColor(Color);
{
foreach (Quad markupBox in MarkupBoxes)
{
PointF[] points = markupBox.Points;
float markupBoxHeight = points[3].Y - points[0].Y;
float markupBoxMargin = GetMarkupBoxMargin(markupBoxHeight);
composer.DrawCurve(
new PointF(points[3].X, points[3].Y + yOffset),
new PointF(points[0].X, points[0].Y + yOffset),
new PointF(points[3].X - markupBoxMargin, points[3].Y - markupBoxMargin + yOffset),
new PointF(points[0].X - markupBoxMargin, points[0].Y + markupBoxMargin + yOffset)
);
composer.DrawLine(
new PointF(points[1].X, points[1].Y + yOffset)
);
composer.DrawCurve(
new PointF(points[2].X, points[2].Y + yOffset),
new PointF(points[1].X + markupBoxMargin, points[1].Y + markupBoxMargin + yOffset),
new PointF(points[2].X + markupBoxMargin, points[2].Y - markupBoxMargin + yOffset)
);
composer.Fill();
}
}
}
break;
case MarkupTypeEnum.Squiggly:
{
composer.SetStrokeColor(Color);
composer.SetLineCap(LineCapEnum.Round);
composer.SetLineJoin(LineJoinEnum.Round);
{
foreach (Quad markupBox in MarkupBoxes)
{
PointF[] points = markupBox.Points;
float markupBoxHeight = points[3].Y - points[0].Y;
float lineWidth = markupBoxHeight * .05f;
float step = markupBoxHeight * .125f;
float boxXOffset = points[3].X;
float boxYOffset = points[3].Y + yOffset - lineWidth;
bool phase = false;
composer.SetLineWidth(lineWidth);
for (float x = 0, xEnd = points[2].X - boxXOffset; x < xEnd || !phase; x += step)
{
PointF point = new PointF(x + boxXOffset, (phase ? -step : 0) + boxYOffset);
if (x == 0)
{
composer.StartPath(point);
}
else
{
composer.DrawLine(point);
}
phase = !phase;
}
}
composer.Stroke();
}
}
break;
case MarkupTypeEnum.StrikeOut:
case MarkupTypeEnum.Underline:
{
composer.SetStrokeColor(Color);
{
float lineYRatio = 0;
switch (markupType)
{
case MarkupTypeEnum.StrikeOut:
lineYRatio = .5f;
break;
case MarkupTypeEnum.Underline:
lineYRatio = .9f;
break;
default:
throw new NotImplementedException();
}
foreach (Quad markupBox in MarkupBoxes)
{
PointF[] points = markupBox.Points;
float markupBoxHeight = points[3].Y - points[0].Y;
float boxYOffset = markupBoxHeight * lineYRatio + yOffset;
composer.SetLineWidth(markupBoxHeight * .065);
composer.DrawLine(
new PointF(points[3].X, points[0].Y + boxYOffset),
new PointF(points[2].X, points[1].Y + boxYOffset)
);
}
composer.Stroke();
}
}
break;
default:
throw new NotImplementedException();
}
}
composer.Flush();
}
/*
TODO: refresh should happen just before serialization, on document event (e.g. OnWrite())
*/
private void RefreshAppearance(
)
{
FormXObject normalAppearance;
RectangleF box = org.pdfclown.objects.Rectangle.Wrap(BaseDataObject[PdfName.Rect]).ToRectangleF();
{
AppearanceStates normalAppearances = Appearance.Normal;
normalAppearance = normalAppearances[null];
if(normalAppearance != null)
{
normalAppearance.Box = box;
normalAppearance.BaseDataObject.Body.SetLength(0);
}
else
{normalAppearances[null] = normalAppearance = new FormXObject(Document, box);}
}
PrimitiveComposer composer = new PrimitiveComposer(normalAppearance);
{
float yOffset = box.Height - Page.Box.Height;
MarkupTypeEnum markupType = MarkupType;
switch(markupType)
{
case MarkupTypeEnum.Highlight:
{
ExtGState defaultExtGState;
{
ExtGStateResources extGStates = normalAppearance.Resources.ExtGStates;
defaultExtGState = extGStates[HighlightExtGStateName];
if(defaultExtGState == null)
{
if(extGStates.Count > 0)
{extGStates.Clear();}
extGStates[HighlightExtGStateName] = defaultExtGState = new ExtGState(Document);
defaultExtGState.AlphaShape = false;
defaultExtGState.BlendMode = new List<BlendModeEnum>(new BlendModeEnum[]{BlendModeEnum.Multiply});
}
}
composer.ApplyState(defaultExtGState);
composer.SetFillColor(Color);
{
foreach(Quad markupBox in MarkupBoxes)
{
PointF[] points = markupBox.Points;
float markupBoxHeight = points[3].Y - points[0].Y;
float markupBoxMargin = GetMarkupBoxMargin(markupBoxHeight);
composer.DrawCurve(
new PointF(points[3].X, points[3].Y + yOffset),
new PointF(points[0].X, points[0].Y + yOffset),
new PointF(points[3].X - markupBoxMargin, points[3].Y - markupBoxMargin + yOffset),
new PointF(points[0].X - markupBoxMargin, points[0].Y + markupBoxMargin + yOffset)
);
composer.DrawLine(
new PointF(points[1].X, points[1].Y + yOffset)
);
composer.DrawCurve(
new PointF(points[2].X, points[2].Y + yOffset),
new PointF(points[1].X + markupBoxMargin, points[1].Y + markupBoxMargin + yOffset),
new PointF(points[2].X + markupBoxMargin, points[2].Y - markupBoxMargin + yOffset)
);
composer.Fill();
}
}
}
break;
case MarkupTypeEnum.Squiggly:
{
composer.SetStrokeColor(Color);
composer.SetLineCap(LineCapEnum.Round);
composer.SetLineJoin(LineJoinEnum.Round);
{
foreach(Quad markupBox in MarkupBoxes)
{
PointF[] points = markupBox.Points;
float markupBoxHeight = points[3].Y - points[0].Y;
float lineWidth = markupBoxHeight * .02f;
float step = markupBoxHeight * .125f;
float boxXOffset = points[3].X;
float boxYOffset = points[3].Y + yOffset - lineWidth;
bool phase = false;
composer.SetLineWidth(lineWidth);
for(float x = 0, xEnd = points[2].X - boxXOffset; x < xEnd || !phase; x += step)
{
PointF point = new PointF(x + boxXOffset, (phase ? -step : 0) + boxYOffset);
if(x == 0)
{composer.StartPath(point);}
else
{composer.DrawLine(point);}
phase = !phase;
}
}
composer.Stroke();
}
}
break;
case MarkupTypeEnum.StrikeOut:
case MarkupTypeEnum.Underline:
{
composer.SetStrokeColor(Color);
{
float lineYRatio = 0;
switch(markupType)
{
case MarkupTypeEnum.StrikeOut:
lineYRatio = .575f;
break;
case MarkupTypeEnum.Underline:
lineYRatio = .85f;
break;
default:
throw new NotImplementedException();
}
foreach(Quad markupBox in MarkupBoxes)
{
PointF[] points = markupBox.Points;
float markupBoxHeight = points[3].Y - points[0].Y;
float boxYOffset = markupBoxHeight * lineYRatio + yOffset;
composer.SetLineWidth(markupBoxHeight * .065);
composer.DrawLine(
new PointF(points[3].X, points[0].Y + boxYOffset),
new PointF(points[2].X, points[1].Y + boxYOffset)
);
}
composer.Stroke();
}
}
break;
default:
throw new NotImplementedException();
}
}
composer.Flush();
}
