示例#1
0
        /// <summary>Write a TTC (TT Collection) to a disk file.</summary>
        public static bool WriteTTCFile(FileStream fs, OTFont[] fonts)
        {
            bool bRet = true;


            // build the TTC header

            OTTag TTCtag         = (OTTag)"ttcf";
            uint  version        = 0x00020000;
            uint  DirectoryCount = (uint)fonts.Length;

            uint [] TableDirectory = new uint[fonts.Length];
            uint    ulDsigTag      = 0;
            uint    ulDsigLength   = 0;
            uint    ulDsigOffset   = 0;

            uint TTCHeaderLen = 12 + DirectoryCount * 4 + 12; // length of version 2.0 header


            // build an array of offset tables
            OffsetTable[] otArr = new OffsetTable[fonts.Length];
            for (int iFont = 0; iFont < fonts.Length; iFont++)
            {
                otArr[iFont] = new OffsetTable(new OTFixed(1, 0), fonts[iFont].GetNumTables());
            }

            // build an array of head tables that will contain the updated modified field and font checksum
            Table_head[] arrHeadTables = new Table_head[fonts.Length];
            for (int i = 0; i < fonts.Length; i++)
            {
                // get the cache
                Table_head            headTable = (Table_head)fonts[i].GetTable("head");
                Table_head.head_cache headCache = (Table_head.head_cache)headTable.GetCache();

                // set the 'modified' field to the current date
                DateTime dt = DateTime.Now;
                headCache.modified = headTable.DateTimeToSecondsSince1904(dt);

                // generate a new table and add it to the array
                Table_head newHead = (Table_head)headCache.GenerateTable();
                arrHeadTables[i] = newHead;
            }



            // build a list of directory entries for each font

            long FilePos = TTCHeaderLen;

            for (int iFont = 0; iFont < fonts.Length; iFont++)
            {
                ushort numTables = fonts[iFont].GetNumTables();
                TableDirectory[iFont] = (uint)FilePos;
                FilePos += 12 + numTables * 16;

                uint PrevFilePos = 0;
                for (ushort i = 0; i < numTables; i++)
                {
                    OTTable table = fonts[iFont].GetTable(i);
                    OTTag   tag   = table.m_tag;

                    if ((string)tag == "head")
                    {
                        table = arrHeadTables[iFont];
                    }

                    // check if this table is a duplicate of a table in a previous font

                    PrevFilePos = 0;
                    if (iFont > 0)
                    {
                        for (int iPrevFont = 0; iPrevFont < iFont; iPrevFont++)
                        {
                            for (int iTable = 0; iTable < fonts[iPrevFont].GetNumTables(); iTable++)
                            {
                                OTTable PrevTable = fonts[iPrevFont].GetTable(table.m_tag);
                                if (PrevTable != null)
                                {
                                    if (MBOBuffer.BinaryEqual(table.m_bufTable, PrevTable.m_bufTable))
                                    {
                                        // get the file position for the previous table
                                        for (int iDe = 0; iDe < otArr[iPrevFont].DirectoryEntries.Count; iDe++)
                                        {
                                            DirectoryEntry dePrev = (DirectoryEntry)otArr[iPrevFont].DirectoryEntries[iDe];
                                            if (dePrev.tag == table.m_tag)
                                            {
                                                PrevFilePos = dePrev.offset;
                                                break;
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }


                    // build a new directory entry

                    DirectoryEntry de = new DirectoryEntry();
                    de.tag      = new OTTag(tag.GetBytes());
                    de.checkSum = table.CalcChecksum();
                    de.length   = table.GetLength();
                    if (PrevFilePos != 0)
                    {
                        de.offset = (uint)PrevFilePos;
                    }
                    else
                    {
                        de.offset = (uint)FilePos;
                        FilePos  += table.GetBuffer().GetPaddedLength();
                    }

                    otArr[iFont].DirectoryEntries.Add(de);
                }


                // sort the directory entries

                if (numTables > 1)
                {
                    for (int i = 0; i < numTables - 1; i++)
                    {
                        for (int j = i + 1; j < numTables; j++)
                        {
                            if (((DirectoryEntry)otArr[iFont].DirectoryEntries[i]).tag > ((DirectoryEntry)otArr[iFont].DirectoryEntries[j]).tag)
                            {
                                DirectoryEntry temp = (DirectoryEntry)otArr[iFont].DirectoryEntries[i];
                                otArr[iFont].DirectoryEntries[i] = (DirectoryEntry)otArr[iFont].DirectoryEntries[j];
                                otArr[iFont].DirectoryEntries[j] = temp;
                            }
                        }
                    }
                }
            }


            // update each font's checksum in the head table

            for (int iFont = 0; iFont < fonts.Length; iFont++)
            {
                ushort numTables = fonts[iFont].GetNumTables();

                // calculate the checksum
                uint sum = 0;
                sum += otArr[iFont].CalcOffsetTableChecksum();
                sum += otArr[iFont].CalcDirectoryEntriesChecksum();
                for (ushort i = 0; i < numTables; i++)
                {
                    DirectoryEntry de    = (DirectoryEntry)otArr[iFont].DirectoryEntries[i];
                    OTTable        table = fonts[iFont].GetTable(de.tag);
                    if ((string)de.tag == "head")
                    {
                        table = arrHeadTables[iFont];
                    }
                    sum += table.CalcChecksum();
                }

                // get the cache
                Table_head            headTable = arrHeadTables[iFont];
                Table_head.head_cache headCache = (Table_head.head_cache)headTable.GetCache();

                // set the checkSumAdujustment field
                headCache.checkSumAdjustment = 0xb1b0afba - sum;

                // generate a new table and replace the head table in the array of head tables
                Table_head newHead = (Table_head)headCache.GenerateTable();
                arrHeadTables[iFont] = newHead;
            }



            // write the TTC header

            WriteUint32MBO(fs, (uint)TTCtag);
            WriteUint32MBO(fs, version);
            WriteUint32MBO(fs, DirectoryCount);
            for (int i = 0; i < fonts.Length; i++)
            {
                WriteUint32MBO(fs, TableDirectory[i]);
            }
            WriteUint32MBO(fs, ulDsigTag);
            WriteUint32MBO(fs, ulDsigLength);
            WriteUint32MBO(fs, ulDsigOffset);


            // write out each font

            for (int iFont = 0; iFont < fonts.Length; iFont++)
            {
                ushort numTables = fonts[iFont].GetNumTables();

                // write the offset table

                fs.Write(otArr[iFont].m_buf.GetBuffer(), 0, (int)otArr[iFont].m_buf.GetLength());


                // write the directory entries

                for (int i = 0; i < numTables; i++)
                {
                    DirectoryEntry de = (DirectoryEntry)otArr[iFont].DirectoryEntries[i];
                    fs.Write(de.m_buf.GetBuffer(), 0, (int)de.m_buf.GetLength());
                }


                // write out each table unless a shared version has been written

                for (ushort i = 0; i < numTables; i++)
                {
                    DirectoryEntry de = (DirectoryEntry)otArr[iFont].DirectoryEntries[i];
                    if (fs.Position == de.offset)
                    {
                        OTTable table = fonts[iFont].GetTable(de.tag);
                        if ((string)table.m_tag == "head")
                        {
                            table = arrHeadTables[iFont];
                        }
                        fs.Write(table.m_bufTable.GetBuffer(), 0, (int)table.GetBuffer().GetPaddedLength());
                    }
                }
            }


            return(bRet);
        }
示例#2
0
        /// <summary>Write a single OTF to a disk file, with tables in
        /// proper order, checksums set, etc.
        /// </summary>
        public static bool WriteSfntFile(FileStream fs, OTFont font)
        {
            bool bRet = true;


            OTFixed     sfntVersion = new OTFixed(1, 0);
            ushort      numTables   = font.GetNumTables();
            OffsetTable ot          = new OffsetTable(sfntVersion, numTables);


            // order tables in fastfont order

            string [] arrOrderedNames = null;
            string [] ttNames         =
            {
                "head", "hhea", "maxp", "OS/2", "hmtx", "LTSH", "VDMX", "hdmx", "cmap", "fpgm",
                "prep", "cvt ", "loca", "glyf", "kern", "name", "post", "gasp", "PCLT"
            };
            string [] psNames =
            {
                "head", "hhea", "maxp", "OS/2", "name", "cmap", "post", "CFF "
            };

            if (font.ContainsTrueTypeOutlines())
            {
                arrOrderedNames = ttNames;
            }
            else if (font.ContainsPostScriptOutlines())
            {
                arrOrderedNames = psNames;
            }

            OTTable[] OrderedTables = new OTTable[numTables];
            for (ushort i = 0; i < numTables; i++)
            {
                OrderedTables[i] = font.GetTable(i);
            }

            if (arrOrderedNames != null)
            {
                ushort curpos = 0;
                for (int iName = 0; iName < arrOrderedNames.Length; iName++)
                {
                    for (ushort i = curpos; i < numTables; i++)
                    {
                        if (arrOrderedNames[iName] == (string)OrderedTables[i].m_tag)
                        {
                            OTTable temp = OrderedTables[curpos];
                            OrderedTables[curpos] = OrderedTables[i];
                            OrderedTables[i]      = temp;
                            curpos++;
                            break;
                        }
                    }
                }
            }


            // update the modified date in the head table

            for (int i = 0; i < OrderedTables.Length; i++)
            {
                if ((string)OrderedTables[i].m_tag == "head")
                {
                    // get the cache
                    Table_head            headTable = (Table_head)OrderedTables[i];
                    Table_head.head_cache headCache = (Table_head.head_cache)headTable.GetCache();

                    // set the 'modified' field to the current date and time
                    DateTime dt = DateTime.Now;
                    headCache.modified = headTable.DateTimeToSecondsSince1904(dt);

                    // generate a new table and replace the head table in the list of ordered tables
                    Table_head newHead = (Table_head)headCache.GenerateTable();
                    OrderedTables[i] = newHead;

                    break;
                }
            }


            // build a list of directory entries

            long TableFilePos = 12 + numTables * 16;

            for (ushort i = 0; i < numTables; i++)
            {
                OTTable table = OrderedTables[i];
                OTTag   tag   = table.m_tag;

                // build a new directory entry
                DirectoryEntry de = new DirectoryEntry();
                de.tag      = new OTTag(tag.GetBytes());
                de.checkSum = table.CalcChecksum();
                de.offset   = (uint)TableFilePos;
                de.length   = table.GetLength();

                ot.DirectoryEntries.Add(de);

                TableFilePos += table.GetBuffer().GetPaddedLength();
            }


            // sort the directory entries

            if (numTables > 1)
            {
                for (int i = 0; i < numTables - 1; i++)
                {
                    for (int j = i + 1; j < numTables; j++)
                    {
                        if (((DirectoryEntry)(ot.DirectoryEntries[i])).tag > ((DirectoryEntry)(ot.DirectoryEntries[j])).tag)
                        {
                            DirectoryEntry temp = (DirectoryEntry)ot.DirectoryEntries[i];
                            ot.DirectoryEntries[i] = (DirectoryEntry)ot.DirectoryEntries[j];
                            ot.DirectoryEntries[j] = temp;
                        }
                    }
                }
            }


            // update the font checksum in the head table

            for (int i = 0; i < OrderedTables.Length; i++)
            {
                if ((string)OrderedTables[i].m_tag == "head")
                {
                    // calculate the checksum
                    uint sum = 0;
                    sum += ot.CalcOffsetTableChecksum();
                    sum += ot.CalcDirectoryEntriesChecksum();
                    for (int j = 0; j < OrderedTables.Length; j++)
                    {
                        sum += OrderedTables[j].CalcChecksum();
                    }

                    // get the cache
                    Table_head            headTable = (Table_head)OrderedTables[i];
                    Table_head.head_cache headCache = (Table_head.head_cache)headTable.GetCache();

                    // set the checkSumAdujustment field
                    headCache.checkSumAdjustment = 0xb1b0afba - sum;

                    // generate a new table and replace the head table in the list of ordered tables
                    Table_head newHead = (Table_head)headCache.GenerateTable();
                    OrderedTables[i] = newHead;

                    break;
                }
            }


            // write the offset table

            fs.Write(ot.m_buf.GetBuffer(), 0, (int)ot.m_buf.GetLength());


            // write the directory entries

            for (int i = 0; i < numTables; i++)
            {
                DirectoryEntry de = (DirectoryEntry)ot.DirectoryEntries[i];
                fs.Write(de.m_buf.GetBuffer(), 0, (int)de.m_buf.GetLength());
            }


            // write the tables

            for (ushort i = 0; i < numTables; i++)
            {
                OTTable table = OrderedTables[i];

                fs.Write(table.m_bufTable.GetBuffer(), 0, (int)table.GetBuffer().GetPaddedLength());
            }


            return(bRet);
        }