public void Execute(PdfOperation op)
{
// see Adobe PDF specs for additional operations
switch (op.Name)
{
case "TJ":
PrintText(op);
break;
case "Tm":
SetMatrix(op);
break;
case "Tf":
SetFont(op);
break;
case "S":
PrintSection(op);
break;
case "G":
case "g":
case "rg":
SetColor(op);
break;
}
}
private void PrintText(PdfOperation op)
{
if (newSection)
{
newSection = false;
StringBuilder header = new StringBuilder();
PrintText(op, header);
}
PrintText(op, text);
}
private static string PrintCommand(PdfOperation op)
{
StringBuilder text = new StringBuilder();
foreach (PdfToken t in op.Arguments)
{
text.AppendFormat("{0} ", t.Value);
}
text.Append(op.Name);
return(text.ToString());
}
private void SetFont(PdfOperation op)
{
var args = op.Arguments.ToList();
string font = args[0].Value;
string size = args[1].Value;
//if (font != lastFont || size != lastFontSize)
// text.AppendLine();
lastFont = font;
lastFontSize = size;
}
private static void PrintText(PdfOperation op, StringBuilder text)
{
foreach (PdfToken t in op.Arguments)
{
switch (t.Type)
{
case PRTokeniser.TK_STRING:
text.Append(t.Value);
break;
case PRTokeniser.TK_NUMBER:
text.Append(" ");
break;
}
}
}
private void SetMatrix(PdfOperation op)
{
var args = op.Arguments.ToList();
string x = args[4].Value;
string y = args[5].Value;
if (lastY != y)
{
text.AppendLine();
}
else if (lastX != x)
{
text.Append(" ");
}
lastX = x;
lastY = y;
}
private void PrintSection(PdfOperation op)
{
text.AppendLine("------------------------------------------------------------");
newSection = true;
}
private void SetColor(PdfOperation op)
{
lastColor = PrintCommand(op).Replace(" ", "_");
}
private void PrintNewline(PdfOperation op)
{
text.AppendLine();
}
