pfm2afm.java

源码包含生成 PDF 和 HTML 的类库

        if (h_len != in.length() || extlen != 30 || fontname < 75 || fontname > 512)
            throw new IOException("Not a valid PFM file.");
        in.seek(psext + 14);
        capheight = in.readShortLE();
        xheight = in.readShortLE();
        ascender = in.readShortLE();
        descender = in.readShortLE();
    }
    
    private void putheader() throws IOException {
        out.print("StartFontMetrics 2.0\n");
        if (copyright.length() > 0)
            out.print("Comment " + copyright + '\n');
        out.print("FontName ");
        in.seek(fontname);
        String fname = readString();
        out.print(fname);
        out.print("\nEncodingScheme ");
        if (charset != 0)
            out.print("FontSpecific\n");
        else
            out.print("AdobeStandardEncoding\n");
        /*
         * The .pfm is missing full name, so construct from font name by
         * changing the hyphen to a space.  This actually works in a lot
         * of cases.
         */
        out.print("FullName " + fname.replace('-', ' '));
        if (face != 0) {
            in.seek(face);
            out.print("\nFamilyName " + readString());
        }

        out.print("\nWeight ");
        if (weight > 475 || fname.toLowerCase().indexOf("bold") >= 0)
           out.print("Bold");
        else if ((weight < 325 && weight != 0) || fname.toLowerCase().indexOf("light") >= 0)
            out.print("Light");
        else if (fname.toLowerCase().indexOf("black") >= 0)
            out.print("Black");
        else 
            out.print("Medium");

        out.print("\nItalicAngle ");
        if (italic != 0 || fname.toLowerCase().indexOf("italic") >= 0)
            out.print("-12.00");
            /* this is a typical value; something else may work better for a
               specific font */
        else
            out.print("0");

        /*
         *  The mono flag in the pfm actually indicates whether there is a
         *  table of font widths, not if they are all the same.
         */
        out.print("\nIsFixedPitch ");
        if ((kind & 1) == 0 ||                  /* Flag for mono */
            avgwidth == maxwidth ) {  /* Avg width = max width */
            out.print("true");
            isMono = true;
        }
        else {
            out.print("false");
            isMono = false;
        }

        /*
         * The font bounding box is lost, but try to reconstruct it.
         * Much of this is just guess work.  The bounding box is required in
         * the .afm, but is not used by the PM font installer.
         */
        out.print("\nFontBBox");
        if (isMono)
            outval(-20);      /* Just guess at left bounds */
        else 
            outval(-100);
        outval(-(descender+5));  /* Descender is given as positive value */
        outval(maxwidth+10);
        outval(ascent+5);

        /*
         * Give other metrics that were kept
         */
        out.print("\nCapHeight");
        outval(capheight);
        out.print("\nXHeight");
        outval(xheight);
        out.print("\nDescender");
        outval(descender);
        out.print("\nAscender");
        outval(ascender);
        out.print('\n');
    }
    
    private void putchartab() throws IOException {
        int count = lastchar - firstchar + 1;
        int ctabs[] = new int[count];
        in.seek(chartab);
        for (int k = 0; k < count; ++k)
            ctabs[k] = in.readUnsignedShortLE();
        int back[] = new int[256];
        if (charset == 0) {
            for (int i = firstchar; i <= lastchar; ++i) {
                if (Win2PSStd[i] != 0)
                    back[Win2PSStd[i]] = i;
            }
        }
        /* Put out the header */
        out.print("StartCharMetrics");
        outval(count);
        out.print('\n');

        /* Put out all encoded chars */
        if (charset != 0) {
        /*
         * If the charset is not the Windows standard, just put out
         * unnamed entries.
         */
            for (int i = firstchar; i <= lastchar; i++) {
                if (ctabs[i - firstchar] != 0) {
                    outchar(i, ctabs[i - firstchar], null);
                }
            }
        }
        else {
            for (int i = 0; i < 256; i++) {
                int j = back[i];
                if (j != 0) {
                    outchar(i, ctabs[j - firstchar], WinChars[j]);
                    ctabs[j - firstchar] = 0;
                }
            }
            /* Put out all non-encoded chars */
            for (int i = firstchar; i <= lastchar; i++) {
                if (ctabs[i - firstchar] != 0) {
                    outchar(-1, ctabs[i - firstchar], WinChars[i]);
                }
            }
        }
        /* Put out the trailer */
        out.print("EndCharMetrics\n");
        
    }
    
    private void putkerntab() throws IOException {
        if (kernpairs == 0)
            return;
        in.seek(kernpairs);
        int count = in.readUnsignedShortLE();
        int nzero = 0;
        int kerns[] = new int[count * 3];
        for (int k = 0; k < kerns.length;) {
            kerns[k++] = in.read();
            kerns[k++] = in.read();
            if ((kerns[k++] = in.readShortLE()) != 0)
                ++nzero;
        }
        if (nzero == 0)
            return;
        out.print("StartKernData\nStartKernPairs");
        outval(nzero);
        out.print('\n');
        for (int k = 0; k < kerns.length; k += 3) {
            if (kerns[k + 2] != 0) {
                out.print("KPX ");
                out.print(WinChars[kerns[k]]);
                out.print(' ');
                out.print(WinChars[kerns[k + 1]]);
                outval(kerns[k + 2]);
                out.print('\n');
            }
        }
        /* Put out trailer */
        out.print("EndKernPairs\nEndKernData\n");
    }
    

    private void  puttrailer() {
        out.print("EndFontMetrics\n");
    }

    private short  vers;
    private int   h_len;             /* Total length of .pfm file */
    private String   copyright;   /* Copyright string [60]*/
    private short  type;
    private short  points;
    private short  verres;
    private short  horres;
    private short  ascent;
    private short  intleading;
    private short  extleading;
    private byte   italic;
    private byte   uline;
    private byte   overs;
    private short  weight;
    private byte   charset;         /* 0=windows, otherwise nomap */
    private short  pixwidth;        /* Width for mono fonts */
    private short  pixheight;
    private byte   kind;            /* Lower bit off in mono */
    private short  avgwidth;        /* Mono if avg=max width */
    private short  maxwidth;        /* Use to compute bounding box */
    private int   firstchar;       /* First char in table */
    private int   lastchar;        /* Last char in table */
    private byte   defchar;
    private byte   brkchar;
    private short  widthby;
    private int   device;
    private int   face;            /* Face name */
    private int   bits;
    private int   bitoff;
    private short  extlen;
    private int   psext;           /* PostScript extension */
    private int   chartab;         /* Character width tables */
    private int   res1;
    private int   kernpairs;       /* Kerning pairs */
    private int   res2;
    private int   fontname;        /* Font name */

/*
 *  Some metrics from the PostScript extension
 */
    private short  capheight;       /* Cap height */
    private short  xheight;         /* X height */
    private short  ascender;        /* Ascender */
    private short  descender;       /* Descender (positive) */

    
    private boolean isMono;
/**
 * Translate table from 1004 to psstd.  1004 is an extension of the
 * Windows translate table used in PM.
 */
    private int Win2PSStd[] = {
        0,   0,   0,   0, 197, 198, 199,   0, 202,   0,   205, 206, 207, 0,   0,   0,   // 00
        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   // 10
        32,  33,  34,  35,  36,  37,  38, 169,  40,  41,  42,  43,  44,  45,  46,  47,  // 20
        48,  49,  50,  51,  52,  53,  54,  55,  56,  57,  58,  59,  60,  61,  62,  63,  // 30
        64,  65,  66,  67,  68,  69,  70,  71,  72,  73,  74,  75,  76,  77,  78,  79,  // 40
        80,  81,  82,  83,  84,  85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  // 50
        193, 97,  98,  99,  100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, // 60
        112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, // 70
        0,   0,   184, 166, 185, 188, 178, 179, 195, 189, 0,   172, 234, 0,   0,   0,   // 80
        0,   96,  0,   170, 186, 183, 177, 208, 196, 0,   0,   173, 250, 0,   0,   0,   // 90
        0,   161, 162, 163, 168, 165, 0,   167, 200, 0,   227, 171, 0,   0,   0,   197, // A0
        0,   0,   0,   0,   194, 0,   182, 180, 203, 0,   235, 187, 0,   0,   0,   191, // B0
        0,   0,   0,   0,   0,   0,   225, 0,   0,   0,   0,   0,   0,   0,   0,   0,   // C0
        0,   0,   0,   0,   0,   0,   0,   0,   233, 0,   0,   0,   0,   0,   0,   251, // D0
        0,   0,   0,   0,   0,   0,   241, 0,   0,   0,   0,   0,   0,   0,   0,   0,   // E0
        0,   0,   0,   0,   0,   0,   0,   0,   249, 0,   0,   0,   0,   0,   0,   0    // F0
    };
    
/**
 *  Character class.  This is a minor attempt to overcome the problem that
 *  in the pfm file, all unused characters are given the width of space.
 *  Note that this array isn't used in iText.
 */
    private int WinClass[] = {
        0, 0, 0, 0, 2, 2, 2, 0, 2, 0, 2, 2, 2, 0, 0, 0,   /* 00 */
        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,   /* 10 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* 20 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* 30 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* 40 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* 50 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* 60 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2,   /* 70 */
        0, 0, 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 0,   /* 80 */
        0, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0, 0, 2,   /* 90 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* a0 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* b0 */
        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,   /* c0 */