C++ TTStreamWriter::printf方法代码示例

/*
** This is the central routine of this section.
*/
void ttfont_CharStrings(TTStreamWriter& stream, struct TTFONT *font, std::vector<int>& glyph_ids)
    {
    Fixed post_format;

    /* The 'post' table format number. */
    post_format = getFixed( font->post_table );

    if( post_format.whole != 2 || post_format.fraction != 0 )
        throw TTException("TrueType fontdoes not have a format 2.0 'post' table");

    /* Emmit the start of the PostScript code to define the dictionary. */
    stream.printf("/CharStrings %d dict dup begin\n", glyph_ids.size());

    /* Emmit one key-value pair for each glyph. */
    for(std::vector<int>::const_iterator i = glyph_ids.begin();
        i != glyph_ids.end(); ++i)
        {
        if(font->target_type == PS_TYPE_42)     /* type 42 */
            {
            stream.printf("/%s %d def\n",ttfont_CharStrings_getname(font, *i), *i);
            }
        else                            /* type 3 */
            {
            stream.printf("/%s{",ttfont_CharStrings_getname(font, *i));

            tt_type3_charproc(stream, font, *i);

            stream.putline("}_d");      /* "} bind def" */
            }
        }

    stream.putline("end readonly def");
    } /* end of ttfont_CharStrings() */

/*-------------------------------------------------------------
** Define the encoding array for this font.
** Since we don't really want to deal with converting all of
** the possible font encodings in the wild to a standard PS
** one, we just explicitly create one for each font.
-------------------------------------------------------------*/
void ttfont_encoding(TTStreamWriter& stream, struct TTFONT *font, std::vector<int>& glyph_ids, font_type_enum target_type)
{
    if (target_type == PS_TYPE_3 || target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.printf("/Encoding [ ");

        for (std::vector<int>::const_iterator i = glyph_ids.begin();
                i != glyph_ids.end(); ++i)
        {
            const char* name = ttfont_CharStrings_getname(font, *i);
            stream.printf("/%s ", name);
        }

        stream.printf("] def\n");
    }
    else
    {
        stream.putline("/Encoding StandardEncoding def");
    }
} /* end of ttfont_encoding() */

/*-----------------------------------------------------------
** Create the optional "FontInfo" sub-dictionary.
-----------------------------------------------------------*/
void ttfont_FontInfo(TTStreamWriter& stream, struct TTFONT *font)
{
    Fixed ItalicAngle;

    /* We create a sub dictionary named "FontInfo" where we */
    /* store information which though it is not used by the */
    /* interpreter, is useful to some programs which will */
    /* be printing with the font. */
    stream.putline("/FontInfo 10 dict dup begin");

    /* These names come from the TrueType font's "name" table. */
    stream.printf("/FamilyName (%s) def\n",font->FamilyName);
    stream.printf("/FullName (%s) def\n",font->FullName);

    if ( font->Copyright != (char*)NULL || font->Trademark != (char*)NULL )
    {
        stream.printf("/Notice (%s",
                      font->Copyright != (char*)NULL ? font->Copyright : "");
        stream.printf("%s%s) def\n",
                      font->Trademark != (char*)NULL ? " " : "",
                      font->Trademark != (char*)NULL ? font->Trademark : "");
    }

    /* This information is not quite correct. */
    stream.printf("/Weight (%s) def\n",font->Style);

    /* Some fonts have this as "version". */
    stream.printf("/Version (%s) def\n",font->Version);

    /* Some information from the "post" table. */
    ItalicAngle = getFixed( font->post_table + 4 );
    stream.printf("/ItalicAngle %d.%d def\n",ItalicAngle.whole,ItalicAngle.fraction);
    stream.printf("/isFixedPitch %s def\n", getULONG( font->post_table + 12 ) ? "true" : "false" );
    stream.printf("/UnderlinePosition %d def\n", (int)getFWord( font->post_table + 8 ) );
    stream.printf("/UnderlineThickness %d def\n", (int)getFWord( font->post_table + 10 ) );
    stream.putline("end readonly def");
} /* end of ttfont_FontInfo() */

/*
** Emit a PostScript "curveto" command, assuming the current point
** is (x0, y0), the control point of a quadratic spline is (x1, y1),
** and the endpoint is (x2, y2). Note that this requires a conversion,
** since PostScript splines are cubic.
*/
void GlyphToType3::PSCurveto(TTStreamWriter& stream,
                             FWord x0, FWord y0,
                             FWord x1, FWord y1,
                             FWord x2, FWord y2)
{
    double sx[3], sy[3], cx[3], cy[3];

    sx[0] = x0;
    sy[0] = y0;
    sx[1] = x1;
    sy[1] = y1;
    sx[2] = x2;
    sy[2] = y2;
    cx[0] = (2*sx[1]+sx[0])/3;
    cy[0] = (2*sy[1]+sy[0])/3;
    cx[1] = (sx[2]+2*sx[1])/3;
    cy[1] = (sy[2]+2*sy[1])/3;
    cx[2] = sx[2];
    cy[2] = sy[2];
    stream.printf("%d %d %d %d %d %d %s\n",
                  (int)cx[0], (int)cy[0], (int)cx[1], (int)cy[1],
                  (int)cx[2], (int)cy[2], pdf_mode ? "c" : "_c");
}

GlyphToType3::GlyphToType3(TTStreamWriter& stream, struct TTFONT *font, int charindex, bool embedded /* = false */)
{
    BYTE *glyph;

    tt_flags = NULL;
    xcoor = NULL;
    ycoor = NULL;
    epts_ctr = NULL;
    area_ctr = NULL;
    check_ctr = NULL;
    ctrset = NULL;
    stack_depth = 0;
    pdf_mode = font->target_type < 0;

    /* Get a pointer to the data. */
    glyph = find_glyph_data( font, charindex );

    /* If the character is blank, it has no bounding box, */
    /* otherwise read the bounding box. */
    if ( glyph == (BYTE*)NULL )
    {
        llx=lly=urx=ury=0;      /* A blank char has an all zero BoundingBox */
        num_ctr=0;              /* Set this for later if()s */
    }
    else
    {
        /* Read the number of contours. */
        num_ctr = getSHORT(glyph);

        /* Read PostScript bounding box. */
        llx = getFWord(glyph + 2);
        lly = getFWord(glyph + 4);
        urx = getFWord(glyph + 6);
        ury = getFWord(glyph + 8);

        /* Advance the pointer. */
        glyph += 10;
    }

    /* If it is a simple character, load its data. */
    if (num_ctr > 0)
    {
        load_char(font, glyph);
    }
    else
    {
        num_pts=0;
    }

    /* Consult the horizontal metrics table to determine */
    /* the character width. */
    if ( charindex < font->numberOfHMetrics )
    {
        advance_width = getuFWord( font->hmtx_table + (charindex * 4) );
    }
    else
    {
        advance_width = getuFWord( font->hmtx_table + ((font->numberOfHMetrics-1) * 4) );
    }

    /* Execute setcachedevice in order to inform the font machinery */
    /* of the character bounding box and advance width. */
    stack(stream, 7);
    if (pdf_mode)
    {
        if (!embedded) {
            stream.printf("%d 0 %d %d %d %d d1\n",
                          topost(advance_width),
                          topost(llx), topost(lly), topost(urx), topost(ury) );
        }
    }
    else if (font->target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.printf("pop gsave .001 .001 scale %d 0 %d %d %d %d setcachedevice\n",
                      topost(advance_width),
                      topost(llx), topost(lly), topost(urx), topost(ury) );
    }
    else
    {
        stream.printf("%d 0 %d %d %d %d _sc\n",
                      topost(advance_width),
                      topost(llx), topost(lly), topost(urx), topost(ury) );
    }

    /* If it is a simple glyph, convert it, */
    /* otherwise, close the stack business. */
    if ( num_ctr > 0 )          /* simple */
    {
        PSConvert(stream);
    }
    else if ( num_ctr < 0 )     /* composite */
    {
        do_composite(stream, font, glyph);
    }

    if (font->target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.printf("\ngrestore\n");
    }

//.........这里部分代码省略.........

/*---------------------------------------------------------------------
** Write the header for a PostScript font.
---------------------------------------------------------------------*/
void ttfont_header(TTStreamWriter& stream, struct TTFONT *font)
{
    int VMMin;
    int VMMax;

    /*
    ** To show that it is a TrueType font in PostScript format,
    ** we will begin the file with a specific string.
    ** This string also indicates the version of the TrueType
    ** specification on which the font is based and the
    ** font manufacturer's revision number for the font.
    */
    if ( font->target_type == PS_TYPE_42 ||
            font->target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.printf("%%!PS-TrueTypeFont-%d.%d-%d.%d\n",
                      font->TTVersion.whole, font->TTVersion.fraction,
                      font->MfrRevision.whole, font->MfrRevision.fraction);
    }

    /* If it is not a Type 42 font, we will use a different format. */
    else
    {
        stream.putline("%!PS-Adobe-3.0 Resource-Font");
    }       /* See RBIIp 641 */

    /* We will make the title the name of the font. */
    stream.printf("%%%%Title: %s\n",font->FullName);

    /* If there is a Copyright notice, put it here too. */
    if ( font->Copyright != (char*)NULL )
    {
        stream.printf("%%%%Copyright: %s\n",font->Copyright);
    }

    /* We created this file. */
    if ( font->target_type == PS_TYPE_42 )
    {
        stream.putline("%%Creator: Converted from TrueType to type 42 by PPR");
    }
    else if (font->target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.putline("%%Creator: Converted from TypeType to type 42/type 3 hybrid by PPR");
    }
    else
    {
        stream.putline("%%Creator: Converted from TrueType to type 3 by PPR");
    }

    /* If VM usage information is available, print it. */
    if ( font->target_type == PS_TYPE_42 || font->target_type == PS_TYPE_42_3_HYBRID)
    {
        VMMin = (int)getULONG( font->post_table + 16 );
        VMMax = (int)getULONG( font->post_table + 20 );
        if ( VMMin > 0 && VMMax > 0 )
            stream.printf("%%%%VMUsage: %d %d\n",VMMin,VMMax);
    }

    /* Start the dictionary which will eventually */
    /* become the font. */
    if (font->target_type == PS_TYPE_42)
    {
        stream.putline("15 dict begin");
    }
    else
    {
        stream.putline("25 dict begin");

        /* Type 3 fonts will need some subroutines here. */
        stream.putline("/_d{bind def}bind def");
        stream.putline("/_m{moveto}_d");
        stream.putline("/_l{lineto}_d");
        stream.putline("/_cl{closepath eofill}_d");
        stream.putline("/_c{curveto}_d");
        stream.putline("/_sc{7 -1 roll{setcachedevice}{pop pop pop pop pop pop}ifelse}_d");
        stream.putline("/_e{exec}_d");
    }

    stream.printf("/FontName /%s def\n",font->PostName);
    stream.putline("/PaintType 0 def");

    if (font->target_type == PS_TYPE_42 || font->target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.putline("/FontMatrix[1 0 0 1 0 0]def");
    }
    else
    {
        stream.putline("/FontMatrix[.001 0 0 .001 0 0]def");
    }

    stream.printf("/FontBBox[%d %d %d %d]def\n",font->llx-1,font->lly-1,font->urx,font->ury);
    if (font->target_type == PS_TYPE_42 || font->target_type == PS_TYPE_42_3_HYBRID)
    {
        stream.printf("/FontType 42 def\n", font->target_type );
    }
    else
    {
//.........这里部分代码省略.........