poppler/BuiltinFont.h

//========================================================================
//
// BuiltinFont.h
//
// Copyright 2001-2003 Glyph & Cog, LLC
//
//========================================================================

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2018, 2020 Albert Astals Cid <aacid@kde.org>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#ifndef BUILTINFONT_H
#define BUILTINFONT_H

#include "BuiltinFontWidth.h"

//------------------------------------------------------------------------

using GetWidthFunction = const BuiltinFontWidth *(*)(const char *str, size_t len);

struct BuiltinFont {
  const char *name;
  const char **defaultBaseEnc;
  short ascent;
  short descent;
  short bbox[4];
  GetWidthFunction f;

  bool getWidth(const char *n, unsigned short *w) const
  {
    const struct BuiltinFontWidth *bfw = f(n, strlen(n));
    if (!bfw) {
        return false;
    }

    *w = bfw->width;
    return true;
  }
};

//------------------------------------------------------------------------

extern "C" {
    // define the gperf generated Lookup functions
    const struct BuiltinFontWidth *CourierWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *CourierBoldWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *CourierBoldObliqueWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *CourierObliqueWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *HelveticaWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *HelveticaBoldWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *HelveticaBoldObliqueWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *HelveticaObliqueWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *SymbolWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *TimesBoldWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *TimesBoldItalicWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *TimesItalicWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *TimesRomanWidthsLookup(const char *str, size_t len);
    const struct BuiltinFontWidth *ZapfDingbatsWidthsLookup(const char *str, size_t len);
}

static const BuiltinFont builtinFonts[] = {
  { "Courier",               standardEncoding,            629, -157, { -23, -250,  715,  805}, &CourierWidthsLookup                   },
  { "Courier-Bold",          standardEncoding,            629, -157, {-113, -250,  749,  801}, &CourierBoldWidthsLookup               },
  { "Courier-BoldOblique",   standardEncoding,            629, -157, { -57, -250,  869,  801}, &CourierBoldObliqueWidthsLookup        },
  { "Courier-Oblique",       standardEncoding,            629, -157, { -27, -250,  849,  805}, &CourierObliqueWidthsLookup            },
  { "Helvetica",             standardEncoding,            718, -207, {-166, -225, 1000,  931}, &HelveticaWidthsLookup                 },
  { "Helvetica-Bold",        standardEncoding,            718, -207, {-170, -228, 1003,  962}, &HelveticaBoldWidthsLookup             },
  { "Helvetica-BoldOblique", standardEncoding,            718, -207, {-174, -228, 1114,  962}, &HelveticaBoldObliqueWidthsLookup      },
  { "Helvetica-Oblique",     standardEncoding,            718, -207, {-170, -225, 1116,  931}, &HelveticaObliqueWidthsLookup          },
  { "Symbol",                symbolEncoding,             1010, -293, {-180, -293, 1090, 1010}, &SymbolWidthsLookup                    },
  { "Times-Bold",            standardEncoding,            683, -217, {-168, -218, 1000,  935}, &TimesBoldWidthsLookup                 },
  { "Times-BoldItalic",      standardEncoding,            683, -217, {-200, -218,  996,  921}, &TimesBoldItalicWidthsLookup           },
  { "Times-Italic",          standardEncoding,            683, -217, {-169, -217, 1010,  883}, &TimesItalicWidthsLookup               },
  { "Times-Roman",           standardEncoding,            683, -217, {-168, -218, 1000,  898}, &TimesRomanWidthsLookup                },
  { "ZapfDingbats",          zapfDingbatsEncoding,        820, -143, {  -1, -143,  981,  820}, &ZapfDingbatsWidthsLookup              }
};

static const BuiltinFont *builtinFontSubst[] = {
  &builtinFonts[0],
  &builtinFonts[3],
  &builtinFonts[1],
  &builtinFonts[2],
  &builtinFonts[4],
  &builtinFonts[7],
  &builtinFonts[5],
  &builtinFonts[6],
  &builtinFonts[12],
  &builtinFonts[11],
  &builtinFonts[9],
  &builtinFonts[10]
};

//------------------------------------------------------------------------

#endif