internal WinTextMetric
(
FontApi DC
)
{
tmHeight = DC.ReadInt32();
tmAscent = DC.ReadInt32();
tmDescent = DC.ReadInt32();
tmInternalLeading = DC.ReadInt32();
tmExternalLeading = DC.ReadInt32();
tmAveCharWidth = DC.ReadInt32();
tmMaxCharWidth = DC.ReadInt32();
tmWeight = DC.ReadInt32();
tmOverhang = DC.ReadInt32();
tmDigitizedAspectX = DC.ReadInt32();
tmDigitizedAspectY = DC.ReadInt32();
tmFirstChar = DC.ReadUInt16();
tmLastChar = DC.ReadUInt16();
tmDefaultChar = DC.ReadUInt16();
tmBreakChar = DC.ReadUInt16();
tmItalic = DC.ReadByte();
tmUnderlined = DC.ReadByte();
tmStruckOut = DC.ReadByte();
tmPitchAndFamily = DC.ReadByte();
tmCharSet = DC.ReadByte();
return;
}
internal BoundingBox
(
FontApi DC
)
{
// empty box
Rect = new PdfRectangle();
// save width in right
Rect.Right = DC.WindowsToPdf(DC.ReadInt32());
// save height
Double Height = DC.WindowsToPdf(DC.ReadInt32());
// left
Rect.Left = DC.WindowsToPdf(DC.ReadInt32());
// top
Rect.Top = DC.WindowsToPdf(DC.ReadInt32());
// adjust right = left + width
Rect.Right += Rect.Left;
// adjust bottom = top - height
Rect.Bottom = Rect.Top - Height;
// get advanced width
Width = DC.WindowsToPdf(DC.ReadInt16());
return;
}
////////////////////////////////////////////////////////////////////
// constructor
////////////////////////////////////////////////////////////////////
internal CharInfo
(
Int32 CharCode,
Int32 GlyphIndex,
FontApi DC
)
{
// save char code and glyph index
this.CharCode = CharCode;
this.GlyphIndex = GlyphIndex;
this.NewGlyphIndex = -1;
Type0Font = CharCode >= 256 || GlyphIndex == 0;
// Bounding Box
Int32 BBoxWidth = DC.ReadInt32();
Int32 BBoxHeight = DC.ReadInt32();
DesignBBoxLeft = DC.ReadInt32();
DesignBBoxTop = DC.ReadInt32();
DesignBBoxRight = DesignBBoxLeft + BBoxWidth;
DesignBBoxBottom = DesignBBoxTop - BBoxHeight;
// glyph advance horizontal and vertical
DesignWidth = DC.ReadInt16();
//DesignHeight = DC.ReadInt16();
return;
}
internal WinKerningPair
(
FontApi DC
)
{
First = DC.ReadChar();
Second = DC.ReadChar();
KernAmount = DC.ReadInt32();
}
internal WinKerningPair
(
FontApi DC
)
{
First = DC.ReadChar();
Second = DC.ReadChar();
KernAmount = DC.WindowsToPdf(DC.ReadInt32());
return;
}
internal FontBox
(
FontApi DC
)
{
Left = DC.ReadInt32();
Top = DC.ReadInt32();
Right = DC.ReadInt32();
Bottom = DC.ReadInt32();
}
public FontBox
(
FontApi DC
)
{
Left = DC.ReadInt32();
Top = DC.ReadInt32();
Right = DC.ReadInt32();
Bottom = DC.ReadInt32();
return;
}
internal WinPanose
(
FontApi DC
)
{
bFamilyType = DC.ReadByte();
bSerifStyle = DC.ReadByte();
bWeight = DC.ReadByte();
bProportion = DC.ReadByte();
bContrast = DC.ReadByte();
bStrokeVariation = DC.ReadByte();
bArmStyle = DC.ReadByte();
bLetterform = DC.ReadByte();
bMidline = DC.ReadByte();
bXHeight = DC.ReadByte();
}
internal WinOutlineTextMetric
(
FontApi DC
)
{
otmSize = DC.ReadUInt32();
otmTextMetric = new WinTextMetric(DC);
DC.Align4();
otmPanoseNumber = new WinPanose(DC);
DC.Align4();
otmfsSelection = DC.ReadUInt32();
otmfsType = DC.ReadUInt32();
otmsCharSlopeRise = DC.ReadInt32();
otmsCharSlopeRun = DC.ReadInt32();
otmItalicAngle = DC.ReadInt32();
otmEMSquare = DC.ReadUInt32();
otmAscent = DC.ReadInt32();
otmDescent = DC.ReadInt32();
otmLineGap = DC.ReadUInt32();
otmsCapEmHeight = DC.ReadUInt32();
otmsXHeight = DC.ReadUInt32();
otmrcFontBox = new FontBox(DC);
otmMacAscent = DC.ReadInt32();
otmMacDescent = DC.ReadInt32();
otmMacLineGap = DC.ReadUInt32();
otmusMinimumPPEM = DC.ReadUInt32();
otmptSubscriptSize = DC.ReadWinPoint();
otmptSubscriptOffset = DC.ReadWinPoint();
otmptSuperscriptSize = DC.ReadWinPoint();
otmptSuperscriptOffset = DC.ReadWinPoint();
otmsStrikeoutSize = DC.ReadUInt32();
otmsStrikeoutPosition = DC.ReadInt32();
otmsUnderscoreSize = DC.ReadInt32();
otmsUnderscorePosition = DC.ReadInt32();
otmpFamilyName = DC.ReadString();
otmpFaceName = DC.ReadString();
otmpStyleName = DC.ReadString();
otmpFullName = DC.ReadString();
return;
}
////////////////////////////////////////////////////////////////////
// Constructor
////////////////////////////////////////////////////////////////////
public PdfFont
(
PdfDocument Document, // PDF document main object
String FontFamilyName, // font family name
FontStyle FontStyle, // font style (Regular, Bold, Italic or Bold | Italic
Boolean EmbeddedFont // embed font in PDF document file
) : base(Document, false, "/Font")
{
// save embedded font flag
this.EmbeddedFont = EmbeddedFont;
// font style cannot be underline or strikeout
if ((FontStyle & (FontStyle.Underline | FontStyle.Strikeout)) != 0)
{
throw new ApplicationException("Font resource cannot have underline or strikeout");
}
// create resource code
ResourceCode = Document.GenerateResourceNumber('F');
// get font family structure
FontFamily = new FontFamily(FontFamilyName);
// test font style availability
if (!FontFamily.IsStyleAvailable(FontStyle))
{
throw new ApplicationException("Font style not available for font family");
}
// design height
DesignHeight = FontFamily.GetEmHeight(FontStyle);
// Ascent, descent and line spacing for a one point font
PdfAscent = WindowsToPdf(FontFamily.GetCellAscent(FontStyle));
PdfDescent = WindowsToPdf(FontFamily.GetCellDescent(FontStyle)); // positive number
PdfLineSpacing = WindowsToPdf(FontFamily.GetLineSpacing(FontStyle));
// create design font
DesignFont = new Font(FontFamily, DesignHeight, FontStyle, GraphicsUnit.Pixel);
// create windows sdk font info object
FontInfo = new FontApi(DesignFont, DesignHeight);
// get character width array
CharWidthArray = FontInfo.GetCharWidthApi(0, 255);
// get array of glyph bounding box and width
GlyphArray = FontInfo.GetGlyphMetricsApi(0, 255);
// reset active (used) characters to not used
ActiveChar = new Boolean[256];
// get outline text metrics structure
WinOutlineTextMetric OTM = FontInfo.GetOutlineTextMetricsApi();
// license
if ((OTM.otmfsType & 2) != 0)
{
throw new ApplicationException("Font " + FontFamilyName + " is not licensed for embedding");
}
// make sure we have true type font and not device font
if ((OTM.otmTextMetric.tmPitchAndFamily & 0xe) != 6)
{
throw new ApplicationException("Font must be True Type and vector");
}
// PDF font flags
FontFlags = 0;
if ((OTM.otmfsSelection & 1) != 0)
{
FontFlags |= PdfFontFlags.Italic;
}
// roman font is a serif font
if ((OTM.otmTextMetric.tmPitchAndFamily >> 4) == 1)
{
FontFlags |= PdfFontFlags.Serif;
}
if ((OTM.otmTextMetric.tmPitchAndFamily >> 4) == 4)
{
FontFlags |= PdfFontFlags.Script;
}
// #define SYMBOL_CHARSET 2
if (OTM.otmTextMetric.tmCharSet == 2)
{
FontFlags |= PdfFontFlags.Symbolic;
SymbolicFont = true;
}
else
{
FontFlags |= PdfFontFlags.Nonsymbolic;
SymbolicFont = false;
}
// #define TMPF_FIXED_PITCH 0x01 (Note very carefully that those meanings are the opposite of what the constant name implies.)
if ((OTM.otmTextMetric.tmPitchAndFamily & 1) == 0)
{
FontFlags |= PdfFontFlags.FixedPitch;
}
// strikeout
PdfStrikeoutPosition = WindowsToPdf(OTM.otmsStrikeoutPosition);
PdfStrikeoutWidth = WindowsToPdf((Int32)OTM.otmsStrikeoutSize);
// underline
PdfUnderlinePosition = WindowsToPdf(OTM.otmsUnderscorePosition);
PdfUnderlineWidth = WindowsToPdf(OTM.otmsUnderscoreSize);
// subscript
PdfSubscriptSize = WindowsToPdf(OTM.otmptSubscriptSize.Y);
PdfSubscriptPosition = WindowsToPdf(OTM.otmptSubscriptOffset.Y);
// superscript
PdfSuperscriptSize = WindowsToPdf(OTM.otmptSuperscriptSize.Y);
PdfSuperscriptPosition = WindowsToPdf(OTM.otmptSuperscriptOffset.Y);
PdfItalicAngle = (Double)OTM.otmItalicAngle / 10.0;
PdfFontWeight = OTM.otmTextMetric.tmWeight;
// exit
return;
}