static void blendPage(Document doc, Image foregroundImage, Image backgroundImage)
{
double height = 792;
double width = 612;
Rect pageRect = new Rect(0, 0, width, height);
Page docpage = doc.CreatePage(doc.NumPages - 1, pageRect);
// This section demonstrates all the Blend Modes one can achieve
// by setting the BlendMode property to each of the 16 enumerations
// on a foreground "ducky" over a background rainbow pattern, and
// plopping all these images on a single page.
Text t = new Text();
Font f = new Font("Arial", FontCreateFlags.Embedded | FontCreateFlags.Subset);
GraphicState gsText = new GraphicState();
gsText.FillColor = new Color(0, 0, 1.0);
TextState ts = new TextState();
for (int i = 0; i < 16; i++)
{
Image individualForegroundImage = foregroundImage.Clone();
Image individualBackgroundImage = backgroundImage.Clone();
GraphicState gs = individualForegroundImage.GraphicState;
individualForegroundImage.Scale(0.125, 0.125);
individualForegroundImage.Translate(800, 200 + height * (7 - i));
individualBackgroundImage.Scale(0.125, 0.125);
individualBackgroundImage.Translate(800, 200 + height * (7 - i));
// Halfway through, create 2nd column by shifting over and up
if (i > 7)
{
individualForegroundImage.Translate(2400, height * 8);
individualBackgroundImage.Translate(2400, height * 8);
}
docpage.Content.AddElement(individualBackgroundImage);
Console.WriteLine("Added background image " + (i + 1) + " to the content.");
docpage.Content.AddElement(individualForegroundImage);
Console.WriteLine("Added foreground image " + (i + 1) + " to the content.");
Matrix m = new Matrix();
if (i > 7)
{
m = m.Translate(480, 750 - ((i - 8) * 100)); // second column
}
else
{
m = m.Translate(180, 750 - (i * 100)); // first column
}
m = m.Scale(12.0, 12.0);
ExtendedGraphicState xgs = new ExtendedGraphicState();
TextRun tr = null;
if (i == 0)
{
xgs.BlendMode = BlendMode.Normal;
tr = new TextRun("Normal", f, gsText, ts, m);
}
else if (i == 1)
{
xgs.BlendMode = BlendMode.Multiply;
tr = new TextRun("Multiply", f, gsText, ts, m);
}
else if (i == 2)
{
xgs.BlendMode = BlendMode.Screen;
tr = new TextRun("Screen", f, gsText, ts, m);
}
else if (i == 3)
{
xgs.BlendMode = BlendMode.Overlay;
tr = new TextRun("Overlay", f, gsText, ts, m);
}
else if (i == 4)
{
xgs.BlendMode = BlendMode.Darken;
tr = new TextRun("Darken", f, gsText, ts, m);
}
else if (i == 5)
{
xgs.BlendMode = BlendMode.Lighten;
tr = new TextRun("Lighten", f, gsText, ts, m);
}
else if (i == 6)
{
xgs.BlendMode = BlendMode.ColorDodge;
tr = new TextRun("Color Dodge", f, gsText, ts, m);
}
else if (i == 7)
{
xgs.BlendMode = BlendMode.ColorBurn;
tr = new TextRun("Color Burn", f, gsText, ts, m);
}
else if (i == 8)
{
xgs.BlendMode = BlendMode.HardLight;
tr = new TextRun("Hard Light", f, gsText, ts, m);
}
else if (i == 9)
{
xgs.BlendMode = BlendMode.SoftLight;
tr = new TextRun("SoftLight", f, gsText, ts, m);
}
else if (i == 10)
{
xgs.BlendMode = BlendMode.Difference;
tr = new TextRun("Difference", f, gsText, ts, m);
}
else if (i == 11)
{
xgs.BlendMode = BlendMode.Exclusion;
tr = new TextRun("Exclusion", f, gsText, ts, m);
}
else if (i == 12)
{
xgs.BlendMode = BlendMode.Hue;
tr = new TextRun("Hue", f, gsText, ts, m);
}
else if (i == 13)
{
xgs.BlendMode = BlendMode.Saturation;
tr = new TextRun("Saturation", f, gsText, ts, m);
}
else if (i == 14)
{
xgs.BlendMode = BlendMode.Color;
tr = new TextRun("Color", f, gsText, ts, m);
}
else if (i == 15)
{
xgs.BlendMode = BlendMode.Luminosity;
tr = new TextRun("Luminosity", f, gsText, ts, m);
}
t.AddRun(tr);
docpage.Content.AddElement(t);
docpage.UpdateContent();
Console.WriteLine("Updated the content on page 1.");
gs.ExtendedGraphicState = xgs;
individualForegroundImage.GraphicState = gs;
Console.WriteLine("Set blend mode in extended graphic state.");
}
}
static void Main(string[] args)
{
Console.WriteLine("ConvertTextToOutlines sample:");
using (Library lib = new Library())
{
String sInput1 = Library.ResourceDirectory + "Sample_Input/TextSearch.pdf";
String sOutput1 = "../TextSearch-converted.pdf";
if (args.Length > 0)
{
sInput1 = args[0];
}
if (args.Length > 1)
{
sOutput1 = args[1];
}
// Open a document with multiple pages.
Document doc = new Document(sInput1);
// Iterate over the pages of the document and add a translucent element to the pages
int totalPages = doc.NumPages;
int pageCounter = 0;
while (pageCounter < totalPages)
{
Page pg = doc.GetPage(pageCounter);
Path tinyLine = new Path();
GraphicState gs = tinyLine.GraphicState;
gs.FillColor = new Color(1.0, 1.0, 1.0); // White
gs.StrokeColor = new Color(1.0, 1.0, 1.0); // white
tinyLine.PaintOp = PathPaintOpFlags.Stroke;; // PathPaintOpFlags.EoFill
gs.Width = 1.0;
ExtendedGraphicState xgs = new ExtendedGraphicState();
xgs.BlendMode = BlendMode.Normal;
xgs.OpacityForStroking = 0.5;
xgs.OpacityForOtherThanStroking = 0.5;
gs.ExtendedGraphicState = xgs;
tinyLine.GraphicState = gs;
Point Origin = new Point(0.0, 0.0);
Point Point1 = new Point(1.0, 1.0); // line that goes from 0,0 to 1,1
tinyLine.MoveTo(Origin);
tinyLine.AddLine(Point1);
tinyLine.ClosePath();
pg.Content.AddElement(tinyLine); // Add the new element to the Content of the page.
pg.UpdateContent(); // Update the PDF page with the changed content
pg.Dispose();
pageCounter++;
}
// Set up some parameters for the flattening.
FlattenTransparencyParams ftParams = new FlattenTransparencyParams();
// The Quality setting indicates the percentage (0%-100%) of vector information
// that is preserved. Lower values result in higher rasterization of vectors.
ftParams.Quality = 100;
ftParams.UseTextOutlines = true;
doc.FlattenTransparency(ftParams, 0, Document.LastPage);
Console.WriteLine("Flattened a multi-page document " + sInput1 + " as " + sOutput1 + ".");
doc.Save(SaveFlags.Full, sOutput1);
}
}
