Esempio n. 1
0
        internal PreviewFontInfo ReadPreviewFontInfo(TableEntryCollection tables, BinaryReader input)
        {
            var rd = new EntriesReaderHelper(tables, input);

            NameEntry nameEntry = rd.Read(new NameEntry());
            OS2Table  os2Table  = rd.Read(new OS2Table());
            //for preview, read ONLY  script list from gsub and gpos (set OnlyScriptList).
            Meta metaTable = rd.Read(new Meta());

            GSUB gsub = rd.Read(new GSUB()
            {
                OnlyScriptList = true
            });
            GPOS gpos = rd.Read(new GPOS()
            {
                OnlyScriptList = true
            });
            Cmap cmap = rd.Read(new Cmap());
            //gsub and gpos contains actual script_list that are in the typeface

            Languages langs = new Languages();

            langs.Update(os2Table, metaTable, cmap, gsub, gpos);

            return(new PreviewFontInfo(
                       nameEntry,
                       os2Table,
                       langs));
        }
Esempio n. 2
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        internal PreviewFontInfo ReadPreviewFontInfo(TableEntryCollection tables, BinaryReader input)
        {
            var rd = new EntriesReaderHelper(tables, input);

            NameEntry nameEntry = rd.Read(new NameEntry());
            OS2Table  os2Table  = rd.Read(new OS2Table());
            //for preview, read ONLY  script list from gsub and gpos (set OnlyScriptList).
            Meta metaTable = rd.Read(new Meta());

            GSUB gsub = rd.Read(new GSUB()
            {
                OnlyScriptList = true
            });
            GPOS gpos = rd.Read(new GPOS()
            {
                OnlyScriptList = true
            });
            //gsub and gpos contains actual script_list that are in the typeface

            Languages langs = new Languages();

            langs.Update(os2Table, metaTable, gsub, gpos);

            return(new PreviewFontInfo(
                       nameEntry.FontName,
                       nameEntry.FontSubFamily,
                       nameEntry.TypographicFamilyName,
                       nameEntry.TypographyicSubfamilyName,
                       os2Table.usWeightClass,
                       langs,
                       Extensions.TypefaceExtensions.TranslatedOS2FontStyle(os2Table))
            {
                PostScriptName = nameEntry.PostScriptName,
                UniqueFontIden = nameEntry.UniqueFontIden,
                VersionString = nameEntry.VersionString
            });
        }
Esempio n. 3
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        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);
        }
Esempio n. 4
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        bool ReadTableEntryCollectionOnRestoreMode(Typeface typeface, RestoreTicket ticket, TableEntryCollection tables, BinaryReader input)
        {
            //RESTORE MODE
            //check header matches

            if (!typeface.IsTrimmed() ||
                !typeface.CompareOriginalHeadersWithNewlyLoadOne(tables.CloneTableHeaders()))
            {
                return(false);
            }


            var rd = new EntriesReaderHelper(tables, input);
            //PART 1: basic information
            //..
            //------------------------------------
            //PART 2: glyphs detail
            //2.1 True type font
            GlyphLocations glyphLocations = ticket.HasTtf ? rd.Read(new GlyphLocations(typeface.MaxProfile.GlyphCount, typeface.Head.WideGlyphLocations)) : null;
            Glyf           glyf           = ticket.HasTtf ? rd.Read(new Glyf(glyphLocations)) : null;

            typeface.GaspTable = ticket.GaspTable ? rd.Read(new Gasp()) : null;

            typeface.SetColorAndPalTable(
                ticket.COLRTable ? rd.Read(new COLR()) : null,
                ticket.CPALTable ? rd.Read(new CPAL()) : null);


            //2.2 Cff font
            CFFTable cff = ticket.HasCff ? rd.Read(new CFFTable()) : null;

            bool isPostScriptOutline = false;
            bool isBitmapFont        = false;

            if (glyf == null)
            {
                //check if this is cff table ?
                if (cff == null)
                {
                    //check  cbdt/cblc ?
                    if (ticket.HasBitmapSource)
                    {
                        //reload only CBDT (embeded bitmap)
                        CBDT cbdt = rd.Read(new CBDT());
                        typeface._bitmapFontGlyphSource.LoadCBDT(cbdt);
                        //just clone existing glyph
                        isBitmapFont = true;
                    }
                    else
                    {
                        //?
                        throw new NotSupportedException();
                    }
                }
                else
                {
                    isPostScriptOutline = true;
                    typeface.SetCffFontSet(cff.Cff1FontSet);
                }
            }
            else
            {
                typeface.SetTtfGlyphs(glyf.Glyphs);
            }

            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;
            }

            if (ticket.HasSvg)
            {
                typeface.SetSvgTable(rd.Read(new SvgTable()));
            }


#if DEBUG
            //test
            //int found = typeface.GetGlyphIndexByName("Uacute");
            if (typeface.IsCffFont)
            {
                //optional???
                typeface.UpdateAllCffGlyphBounds();
            }
#endif
            typeface._typefaceTrimMode = TrimMode.Restored;
            return(true);
        }