private int GetInfo(String character, PdfAcroForm form, String name)
{
PdfFormField field = form.GetField(name);
PdfFont font = field.GetFont();
FontMetrics fontMetrics = font.GetFontProgram().GetFontMetrics();
float fontSize = field.GetFontSize();
if (fontSize == 0)
{
return(1000);
}
Rectangle rectangle = field.GetWidgets()[0].GetRectangle().ToRectangle();
// Factor here is a leading value. We calculate it by subtracting lower left corner value from
// the upper right corner value of the glyph bounding box
float factor = (fontMetrics.GetBbox()[3] - fontMetrics.GetBbox()[1]) / 1000f;
int rows = (int)Math.Round(rectangle.GetHeight() / (fontSize * factor) + 0.5f);
int columns = (int)Math.Round(rectangle.GetWidth() / font.GetWidth(character, fontSize) + 0.5f);
return(rows * columns);
}
/// <summary>
/// Generates the font descriptor for this font or
/// <see langword="null"/>
/// if it is one of the 14 built in fonts.
/// </summary>
/// <returns>
/// the PdfDictionary containing the font descriptor or
/// <see langword="null"/>
/// .
/// </returns>
protected internal override PdfDictionary GetFontDescriptor(String fontName)
{
FontMetrics fontMetrics = fontProgram.GetFontMetrics();
FontNames fontNames = fontProgram.GetFontNames();
PdfDictionary fontDescriptor = new PdfDictionary();
MakeObjectIndirect(fontDescriptor);
fontDescriptor.Put(PdfName.Type, PdfName.FontDescriptor);
fontDescriptor.Put(PdfName.FontName, new PdfName(fontName));
fontDescriptor.Put(PdfName.Ascent, new PdfNumber(fontMetrics.GetTypoAscender()));
fontDescriptor.Put(PdfName.CapHeight, new PdfNumber(fontMetrics.GetCapHeight()));
fontDescriptor.Put(PdfName.Descent, new PdfNumber(fontMetrics.GetTypoDescender()));
fontDescriptor.Put(PdfName.FontBBox, new PdfArray(ArrayUtil.CloneArray(fontMetrics.GetBbox())));
fontDescriptor.Put(PdfName.ItalicAngle, new PdfNumber(fontMetrics.GetItalicAngle()));
fontDescriptor.Put(PdfName.StemV, new PdfNumber(fontMetrics.GetStemV()));
if (fontMetrics.GetXHeight() > 0)
{
fontDescriptor.Put(PdfName.XHeight, new PdfNumber(fontMetrics.GetXHeight()));
}
if (fontMetrics.GetStemH() > 0)
{
fontDescriptor.Put(PdfName.StemH, new PdfNumber(fontMetrics.GetStemH()));
}
if (fontNames.GetFontWeight() > 0)
{
fontDescriptor.Put(PdfName.FontWeight, new PdfNumber(fontNames.GetFontWeight()));
}
if (fontNames.GetFamilyName() != null && fontNames.GetFamilyName().Length > 0 && fontNames.GetFamilyName()
[0].Length >= 4)
{
fontDescriptor.Put(PdfName.FontFamily, new PdfString(fontNames.GetFamilyName()[0][3]));
}
//add font stream and flush it immediately
AddFontStream(fontDescriptor);
int flags = fontProgram.GetPdfFontFlags();
if (fontProgram.IsFontSpecific() != fontEncoding.IsFontSpecific())
{
flags &= ~(4 | 32);
// reset both flags
flags |= fontEncoding.IsFontSpecific() ? 4 : 32;
}
// set based on font encoding
fontDescriptor.Put(PdfName.Flags, new PdfNumber(flags));
return(fontDescriptor);
}
/// <summary>
/// Generates the font descriptor for this font or
/// <see langword="null"/>
/// if it is one of the 14 built in fonts.
/// </summary>
/// <returns>
/// the PdfDictionary containing the font descriptor or
/// <see langword="null"/>
/// .
/// </returns>
protected internal override PdfDictionary GetFontDescriptor(String fontName)
{
FontMetrics fontMetrics = fontProgram.GetFontMetrics();
FontNames fontNames = fontProgram.GetFontNames();
PdfDictionary fontDescriptor = new PdfDictionary();
MarkObjectAsIndirect(fontDescriptor);
fontDescriptor.Put(PdfName.Type, PdfName.FontDescriptor);
fontDescriptor.Put(PdfName.FontName, new PdfName(fontName));
fontDescriptor.Put(PdfName.Ascent, new PdfNumber(fontMetrics.GetTypoAscender()));
fontDescriptor.Put(PdfName.CapHeight, new PdfNumber(fontMetrics.GetCapHeight()));
fontDescriptor.Put(PdfName.Descent, new PdfNumber(fontMetrics.GetTypoDescender()));
fontDescriptor.Put(PdfName.FontBBox, new PdfArray(ArrayUtil.CloneArray(fontMetrics.GetBbox())));
fontDescriptor.Put(PdfName.ItalicAngle, new PdfNumber(fontMetrics.GetItalicAngle()));
fontDescriptor.Put(PdfName.StemV, new PdfNumber(fontMetrics.GetStemV()));
if (fontMetrics.GetXHeight() > 0)
{
fontDescriptor.Put(PdfName.XHeight, new PdfNumber(fontMetrics.GetXHeight()));
}
if (fontMetrics.GetStemH() > 0)
{
fontDescriptor.Put(PdfName.StemH, new PdfNumber(fontMetrics.GetStemH()));
}
if (fontNames.GetFontWeight() > 0)
{
fontDescriptor.Put(PdfName.FontWeight, new PdfNumber(fontNames.GetFontWeight()));
}
if (fontNames.GetFamilyName() != null && fontNames.GetFamilyName().Length > 0 && fontNames.GetFamilyName()
[0].Length >= 4)
{
fontDescriptor.Put(PdfName.FontFamily, new PdfString(fontNames.GetFamilyName()[0][3]));
}
AddFontStream(fontDescriptor);
int flags = fontProgram.GetPdfFontFlags();
if (!fontEncoding.IsFontSpecific())
{
flags &= ~64;
}
fontDescriptor.Put(PdfName.Flags, new PdfNumber(flags));
return(fontDescriptor);
}