Example #1
0
        internal Typeface ReadTableEntryCollection(TableEntryCollection tables, BinaryReader input)
        {
            OS2Table  os2Table  = ReadTableIfExists(tables, input, new OS2Table());
            NameEntry nameEntry = ReadTableIfExists(tables, input, new NameEntry());

            Head              header            = ReadTableIfExists(tables, input, new Head());
            MaxProfile        maximumProfile    = ReadTableIfExists(tables, input, new MaxProfile());
            HorizontalHeader  horizontalHeader  = ReadTableIfExists(tables, input, new HorizontalHeader());
            HorizontalMetrics horizontalMetrics = ReadTableIfExists(tables, input, new HorizontalMetrics(horizontalHeader.HorizontalMetricsCount, maximumProfile.GlyphCount));

            //---
            PostTable postTable = ReadTableIfExists(tables, input, new PostTable());
            CFFTable  cff       = ReadTableIfExists(tables, input, new CFFTable());

            //--------------
            Cmap           cmaps          = ReadTableIfExists(tables, input, new Cmap());
            GlyphLocations glyphLocations = ReadTableIfExists(tables, input, new GlyphLocations(maximumProfile.GlyphCount, header.WideGlyphLocations));

            Glyf glyf = ReadTableIfExists(tables, input, new Glyf(glyphLocations));
            //--------------
            Gasp gaspTable             = ReadTableIfExists(tables, input, new Gasp());
            VerticalDeviceMetrics vdmx = ReadTableIfExists(tables, input, new VerticalDeviceMetrics());
            //--------------


            Kern kern = ReadTableIfExists(tables, input, new Kern()); //deprecated
            //--------------
            //advanced typography
            GDEF gdef      = ReadTableIfExists(tables, input, new GDEF());
            GSUB gsub      = ReadTableIfExists(tables, input, new GSUB());
            GPOS gpos      = ReadTableIfExists(tables, input, new GPOS());
            BASE baseTable = ReadTableIfExists(tables, input, new BASE());
            JSTF jstf      = ReadTableIfExists(tables, input, new JSTF());

            COLR           colr = ReadTableIfExists(tables, input, new COLR());
            CPAL           cpal = ReadTableIfExists(tables, input, new CPAL());
            VerticalHeader vhea = ReadTableIfExists(tables, input, new VerticalHeader());

            if (vhea != null)
            {
                VerticalMetrics vmtx = ReadTableIfExists(tables, input, new VerticalMetrics(vhea.NumOfLongVerMetrics));
            }

            STAT stat = ReadTableIfExists(tables, input, new STAT());

            if (stat != null)
            {
                FVar fvar = ReadTableIfExists(tables, input, new FVar());
                if (fvar != null)
                {
                    GVar gvar = ReadTableIfExists(tables, input, new GVar());
                    CVar cvar = ReadTableIfExists(tables, input, new CVar());
                    HVar hvar = ReadTableIfExists(tables, input, new HVar());
                    MVar mvar = ReadTableIfExists(tables, input, new MVar());
                    AVar avar = ReadTableIfExists(tables, input, new AVar());
                }
            }


            //test math table
            MathTable mathtable = ReadTableIfExists(tables, input, new MathTable());

            //---------------------------------------------
            //about truetype instruction init

            //---------------------------------------------
            Typeface typeface            = null;
            bool     isPostScriptOutline = false;
            bool     isBitmapFont        = false;

            if (glyf == null)
            {
                //check if this is cff table ?
                if (cff == null)
                {
                    //check  cbdt/cblc ?
                    CBLC cblcTable = ReadTableIfExists(tables, input, new CBLC());
                    if (cblcTable != null)
                    {
                        CBDT cbdtTable = ReadTableIfExists(tables, input, new CBDT());
                        //read cbdt
                        //bitmap font

                        BitmapFontGlyphSource bmpFontGlyphSrc = new BitmapFontGlyphSource(cblcTable, cbdtTable);
                        Glyph[] glyphs = bmpFontGlyphSrc.BuildGlyphList();


                        typeface = new Typeface(
                            nameEntry,
                            header.Bounds,
                            header.UnitsPerEm,
                            bmpFontGlyphSrc,
                            glyphs,
                            horizontalMetrics,
                            os2Table);
                        isBitmapFont = true;
                    }
                    else
                    {
                        //TODO:
                        EBLC fontBmpTable = ReadTableIfExists(tables, input, new EBLC());
                        throw new NotSupportedException();
                    }
                }
                else
                {
                    //...
                    //PostScript outline font
                    isPostScriptOutline = true;
                    typeface            = new Typeface(
                        nameEntry,
                        header.Bounds,
                        header.UnitsPerEm,
                        cff,
                        horizontalMetrics,
                        os2Table);
                }
            }
            else
            {
                typeface = new Typeface(
                    nameEntry,
                    header.Bounds,
                    header.UnitsPerEm,
                    glyf.Glyphs,
                    horizontalMetrics,
                    os2Table);
            }

            //----------------------------
            typeface.CmapTable  = cmaps;
            typeface.KernTable  = kern;
            typeface.GaspTable  = gaspTable;
            typeface.MaxProfile = maximumProfile;
            typeface.HheaTable  = horizontalHeader;
            //----------------------------

            if (!isPostScriptOutline && !isBitmapFont)
            {
                FpgmTable fpgmTable = ReadTableIfExists(tables, input, new FpgmTable());
                //control values table
                CvtTable cvtTable = ReadTableIfExists(tables, input, new CvtTable());
                if (cvtTable != null)
                {
                    typeface.ControlValues = cvtTable._controlValues;
                }
                if (fpgmTable != null)
                {
                    typeface.FpgmProgramBuffer = fpgmTable._programBuffer;
                }
                PrepTable propProgramTable = ReadTableIfExists(tables, input, new PrepTable());
                if (propProgramTable != null)
                {
                    typeface.PrepProgramBuffer = propProgramTable._programBuffer;
                }
            }
            //-------------------------
            typeface.LoadOpenFontLayoutInfo(
                gdef,
                gsub,
                gpos,
                baseTable,
                colr,
                cpal);
            //------------

            {
                SvgTable svgTable = ReadTableIfExists(tables, input, new SvgTable());
                if (svgTable != null)
                {
                    typeface._svgTable = svgTable;
                }
            }

            typeface.PostTable = postTable;
            if (mathtable != null)
            {
                var mathGlyphLoader = new MathGlyphLoader();
                mathGlyphLoader.LoadMathGlyph(typeface, mathtable);
            }
#if DEBUG
            //test
            //int found = typeface.GetGlyphIndexByName("Uacute");
            if (typeface.IsCffFont)
            {
                //optional
                typeface.UpdateAllCffGlyphBounds();
            }
#endif
            return(typeface);
        }
Example #2
0
        internal bool ReadTableEntryCollection(Typeface typeface, RestoreTicket ticket, TableEntryCollection tables, BinaryReader input)
        {
            if (ticket != null)
            {
                return(ReadTableEntryCollectionOnRestoreMode(typeface, ticket, tables, input));
            }

            typeface.SetTableEntryCollection(tables.CloneTableHeaders());

            var rd = new EntriesReaderHelper(tables, input);
            //PART 1: basic information
            OS2Table          os2Table          = rd.Read(new OS2Table());
            Meta              meta              = rd.Read(new Meta());
            NameEntry         nameEntry         = rd.Read(new NameEntry());
            Head              head              = rd.Read(new Head());
            MaxProfile        maxProfile        = rd.Read(new MaxProfile());
            HorizontalHeader  horizontalHeader  = rd.Read(new HorizontalHeader());
            HorizontalMetrics horizontalMetrics = rd.Read(new HorizontalMetrics(horizontalHeader.NumberOfHMetrics, maxProfile.GlyphCount));
            VerticalHeader    vhea              = rd.Read(new VerticalHeader());

            if (vhea != null)
            {
                VerticalMetrics vmtx = rd.Read(new VerticalMetrics(vhea.NumOfLongVerMetrics));
            }

            Cmap cmaps = rd.Read(new Cmap());
            VerticalDeviceMetrics vdmx = rd.Read(new VerticalDeviceMetrics());
            Kern kern = rd.Read(new Kern());
            //------------------------------------
            //PART 2: glyphs detail
            //2.1 True type font

            GlyphLocations glyphLocations = rd.Read(new GlyphLocations(maxProfile.GlyphCount, head.WideGlyphLocations));
            Glyf           glyf           = rd.Read(new Glyf(glyphLocations));
            Gasp           gaspTable      = rd.Read(new Gasp());
            COLR           colr           = rd.Read(new COLR());
            CPAL           cpal           = rd.Read(new CPAL());

            //2.2 Cff font
            PostTable postTable = rd.Read(new PostTable());
            CFFTable  cff       = rd.Read(new CFFTable());

            //additional math table (if available)
            MathTable mathtable = rd.Read(new MathTable());
            //------------------------------------

            //PART 3: advanced typography
            GDEF gdef      = rd.Read(new GDEF());
            GSUB gsub      = rd.Read(new GSUB());
            GPOS gpos      = rd.Read(new GPOS());
            BASE baseTable = rd.Read(new BASE());
            JSTF jstf      = rd.Read(new JSTF());

            STAT stat = rd.Read(new STAT());

            if (stat != null)
            {
                //variable font
                FVar fvar = rd.Read(new FVar());
                if (fvar != null)
                {
                    GVar gvar = rd.Read(new GVar());
                    CVar cvar = rd.Read(new CVar());
                    HVar hvar = rd.Read(new HVar());
                    MVar mvar = rd.Read(new MVar());
                    AVar avar = rd.Read(new AVar());
                }
            }

            bool isPostScriptOutline = false;
            bool isBitmapFont        = false;

            typeface.SetBasicTypefaceTables(os2Table, nameEntry, head, horizontalMetrics);
            if (glyf == null)
            {
                //check if this is cff table ?
                if (cff == null)
                {
                    //check  cbdt/cblc ?
                    CBLC cblcTable = rd.Read(new CBLC());
                    if (cblcTable != null)
                    {
                        CBDT cbdtTable = rd.Read(new CBDT());
                        //read cbdt
                        //bitmap font

                        BitmapFontGlyphSource bmpFontGlyphSrc = new BitmapFontGlyphSource(cblcTable);
                        bmpFontGlyphSrc.LoadCBDT(cbdtTable);
                        Glyph[] glyphs = bmpFontGlyphSrc.BuildGlyphList();
                        typeface.SetBitmapGlyphs(glyphs, bmpFontGlyphSrc);
                        isBitmapFont = true;
                    }
                    else
                    {
                        //TODO:
                        EBLC fontBmpTable = rd.Read(new EBLC());
                        throw new NotSupportedException();
                    }
                }
                else
                {
                    isPostScriptOutline = true;
                    typeface.SetCffFontSet(cff.Cff1FontSet);
                }
            }
            else
            {
                typeface.SetTtfGlyphs(glyf.Glyphs);
            }

            //----------------------------
            typeface.CmapTable  = cmaps;
            typeface.KernTable  = kern;
            typeface.MaxProfile = maxProfile;
            typeface.HheaTable  = horizontalHeader;
            //----------------------------
            typeface.GaspTable = gaspTable;

            if (!isPostScriptOutline && !isBitmapFont)
            {
                //for true-type font outline
                FpgmTable fpgmTable = rd.Read(new FpgmTable());
                //control values table
                CvtTable  cvtTable         = rd.Read(new CvtTable());
                PrepTable propProgramTable = rd.Read(new PrepTable());

                typeface.ControlValues     = cvtTable?._controlValues;
                typeface.FpgmProgramBuffer = fpgmTable?._programBuffer;
                typeface.PrepProgramBuffer = propProgramTable?._programBuffer;
            }

            //-------------------------
            typeface.LoadOpenFontLayoutInfo(
                gdef,
                gsub,
                gpos,
                baseTable,
                colr,
                cpal);
            //------------

            typeface.SetSvgTable(rd.Read(new SvgTable()));
            typeface.PostTable = postTable;

            if (mathtable != null)
            {
                MathGlyphLoader.LoadMathGlyph(typeface, mathtable);
            }
#if DEBUG
            //test
            //int found = typeface.GetGlyphIndexByName("Uacute");
            if (typeface.IsCffFont)
            {
                //optional
                typeface.UpdateAllCffGlyphBounds();
            }
#endif
            typeface.UpdateLangs(meta);
            typeface.UpdateFrequentlyUsedValues();
            return(true);
        }