font_win32.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "../../stdafx.h"
#include "../../debug.h"
#include "../../blitter/factory.hpp"
#include "../../core/alloc_func.hpp"
#include "../../core/math_func.hpp"
#include "../../fileio_func.h"
#include "../../fontdetection.h"
#include "../../fontcache.h"
#include "../../fontcache/truetypefontcache.h"
#include "../../string_func.h"
#include "../../strings_func.h"
#include "../../zoom_func.h"
#include "font_win32.h"
 
#include "../../table/control_codes.h"
 
#include <windows.h>
#include <shlobj.h> /* SHGetFolderPath */
#include "os/windows/win32.h"
#undef small // Say what, Windows?
 
#include "safeguards.h"
 
#ifdef WITH_FREETYPE
 
#include <ft2build.h>
#include FT_FREETYPE_H
 
extern FT_Library _library;
 
static const char *GetShortPath(const wchar_t *long_path)
{
  static char short_path[MAX_PATH];
  wchar_t short_path_w[MAX_PATH];
  GetShortPathName(long_path, short_path_w, lengthof(short_path_w));
  WideCharToMultiByte(CP_ACP, 0, short_path_w, -1, short_path, lengthof(short_path), nullptr, nullptr);
  return short_path;
}
 
/* Get the font file to be loaded into Freetype by looping the registry
 * location where windows lists all installed fonts. Not very nice, will
 * surely break if the registry path changes, but it works. Much better
 * solution would be to use CreateFont, and extract the font data from it
 * by GetFontData. The problem with this is that the font file needs to be
 * kept in memory then until the font is no longer needed. This could mean
 * an additional memory usage of 30MB (just for fonts!) when using an eastern
 * font for all font sizes */
static const wchar_t *FONT_DIR_NT = L"SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
FT_Error GetFontByFaceName(const char *font_name, FT_Face *face)
{
  FT_Error err = FT_Err_Cannot_Open_Resource;
  HKEY hKey;
  LONG ret;
  wchar_t vbuffer[MAX_PATH], dbuffer[256];
  wchar_t *pathbuf;
  const char *font_path;
  uint index;
  size_t path_len;
 
  ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, FONT_DIR_NT, 0, KEY_READ, &hKey);
 
  if (ret != ERROR_SUCCESS) {
    Debug(fontcache, 0, "Cannot open registry key HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Fonts");
    return err;
  }
 
  /* Convert font name to file system encoding. */
  wchar_t *font_namep = wcsdup(OTTD2FS(font_name).c_str());
 
  for (index = 0;; index++) {
    wchar_t *s;
    DWORD vbuflen = lengthof(vbuffer);
    DWORD dbuflen = lengthof(dbuffer);
 
    ret = RegEnumValue(hKey, index, vbuffer, &vbuflen, nullptr, nullptr, (byte *)dbuffer, &dbuflen);
    if (ret != ERROR_SUCCESS) goto registry_no_font_found;
 
    /* The font names in the registry are of the following 3 forms:
     * - ADMUI3.fon
     * - Book Antiqua Bold (TrueType)
     * - Batang & BatangChe & Gungsuh & GungsuhChe (TrueType)
     * We will strip the font-type '()' if any and work with the font name
     * itself, which must match exactly; if...
     * TTC files, font files which contain more than one font are separated
     * by '&'. Our best bet will be to do substr match for the fontname
     * and then let FreeType figure out which index to load */
    s = wcschr(vbuffer, L'(');
    if (s != nullptr) s[-1] = '\0';
 
    if (wcschr(vbuffer, L'&') == nullptr) {
      if (wcsicmp(vbuffer, font_namep) == 0) break;
    } else {
      if (wcsstr(vbuffer, font_namep) != nullptr) break;
    }
  }
 
  if (!SUCCEEDED(SHGetFolderPath(nullptr, CSIDL_FONTS, nullptr, SHGFP_TYPE_CURRENT, vbuffer))) {
    Debug(fontcache, 0, "SHGetFolderPath cannot return fonts directory");
    goto folder_error;
  }
 
  /* Some fonts are contained in .ttc files, TrueType Collection fonts. These
   * contain multiple fonts inside this single file. GetFontData however
   * returns the whole file, so we need to check each font inside to get the
   * proper font. */
  path_len = wcslen(vbuffer) + wcslen(dbuffer) + 2; // '\' and terminating nul.
  pathbuf = AllocaM(wchar_t, path_len);
  _snwprintf(pathbuf, path_len, L"%s\\%s", vbuffer, dbuffer);
 
  /* Convert the path into something that FreeType understands. */
  font_path = GetShortPath(pathbuf);
 
  index = 0;
  do {
    err = FT_New_Face(_library, font_path, index, face);
    if (err != FT_Err_Ok) break;
 
    if (strncasecmp(font_name, (*face)->family_name, strlen((*face)->family_name)) == 0) break;
    /* Try english name if font name failed */
    if (strncasecmp(font_name + strlen(font_name) + 1, (*face)->family_name, strlen((*face)->family_name)) == 0) break;
    err = FT_Err_Cannot_Open_Resource;
 
  } while ((FT_Long)++index != (*face)->num_faces);
 
 
folder_error:
registry_no_font_found:
  free(font_namep);
  RegCloseKey(hKey);
  return err;
}
 
static std::string GetEnglishFontName(const ENUMLOGFONTEX *logfont)
{
  static char font_name[MAX_PATH];
  const char *ret_font_name = nullptr;
  uint pos = 0;
  HDC dc;
  HGDIOBJ oldfont;
  byte *buf;
  DWORD dw;
  uint16 format, count, stringOffset, platformId, encodingId, languageId, nameId, length, offset;
 
  HFONT font = CreateFontIndirect(&logfont->elfLogFont);
  if (font == nullptr) goto err1;
 
  dc = GetDC(nullptr);
  oldfont = SelectObject(dc, font);
  dw = GetFontData(dc, 'eman', 0, nullptr, 0);
  if (dw == GDI_ERROR) goto err2;
 
  buf = MallocT<byte>(dw);
  dw = GetFontData(dc, 'eman', 0, buf, dw);
  if (dw == GDI_ERROR) goto err3;
 
  format = buf[pos++] << 8;
  format += buf[pos++];
  assert(format == 0);
  count = buf[pos++] << 8;
  count += buf[pos++];
  stringOffset = buf[pos++] << 8;
  stringOffset += buf[pos++];
  for (uint i = 0; i < count; i++) {
    platformId = buf[pos++] << 8;
    platformId += buf[pos++];
    encodingId = buf[pos++] << 8;
    encodingId += buf[pos++];
    languageId = buf[pos++] << 8;
    languageId += buf[pos++];
    nameId = buf[pos++] << 8;
    nameId += buf[pos++];
    if (nameId != 1) {
      pos += 4; // skip length and offset
      continue;
    }
    length = buf[pos++] << 8;
    length += buf[pos++];
    offset = buf[pos++] << 8;
    offset += buf[pos++];
 
    /* Don't buffer overflow */
    length = std::min<uint16>(length, MAX_PATH - 1);
    for (uint j = 0; j < length; j++) font_name[j] = buf[stringOffset + offset + j];
    font_name[length] = '\0';
 
    if ((platformId == 1 && languageId == 0) ||      // Macintosh English
      (platformId == 3 && languageId == 0x0409)) { // Microsoft English (US)
      ret_font_name = font_name;
      break;
    }
  }
 
err3:
  free(buf);
err2:
  SelectObject(dc, oldfont);
  ReleaseDC(nullptr, dc);
  DeleteObject(font);
err1:
  return ret_font_name == nullptr ? FS2OTTD((const wchar_t *)logfont->elfFullName) : std::string(ret_font_name);
}
#endif /* WITH_FREETYPE */
 
class FontList {
protected:
  wchar_t **fonts;
  uint items;
  uint capacity;
 
public:
  FontList() : fonts(nullptr), items(0), capacity(0) { };
 
  ~FontList() {
    if (this->fonts == nullptr) return;
 
    for (uint i = 0; i < this->items; i++) {
      free(this->fonts[i]);
    }
 
    free(this->fonts);
  }
 
  bool Add(const wchar_t *font) {
    for (uint i = 0; i < this->items; i++) {
      if (wcscmp(this->fonts[i], font) == 0) return false;
    }
 
    if (this->items == this->capacity) {
      this->capacity += 10;
      this->fonts = ReallocT(this->fonts, this->capacity);
    }
 
    this->fonts[this->items++] = wcsdup(font);
 
    return true;
  }
};
 
struct EFCParam {
  FontCacheSettings *settings;
  LOCALESIGNATURE  locale;
  MissingGlyphSearcher *callback;
  FontList fonts;
};
 
static int CALLBACK EnumFontCallback(const ENUMLOGFONTEX *logfont, const NEWTEXTMETRICEX *metric, DWORD type, LPARAM lParam)
{
  EFCParam *info = (EFCParam *)lParam;
 
  /* Skip duplicates */
  if (!info->fonts.Add((const wchar_t *)logfont->elfFullName)) return 1;
  /* Only use TrueType fonts */
  if (!(type & TRUETYPE_FONTTYPE)) return 1;
  /* Don't use SYMBOL fonts */
  if (logfont->elfLogFont.lfCharSet == SYMBOL_CHARSET) return 1;
  /* Use monospaced fonts when asked for it. */
  if (info->callback->Monospace() && (logfont->elfLogFont.lfPitchAndFamily & (FF_MODERN | FIXED_PITCH)) != (FF_MODERN | FIXED_PITCH)) return 1;
 
  /* The font has to have at least one of the supported locales to be usable. */
  if ((metric->ntmFontSig.fsCsb[0] & info->locale.lsCsbSupported[0]) == 0 && (metric->ntmFontSig.fsCsb[1] & info->locale.lsCsbSupported[1]) == 0) {
    /* On win9x metric->ntmFontSig seems to contain garbage. */
    FONTSIGNATURE fs;
    memset(&fs, 0, sizeof(fs));
    HFONT font = CreateFontIndirect(&logfont->elfLogFont);
    if (font != nullptr) {
      HDC dc = GetDC(nullptr);
      HGDIOBJ oldfont = SelectObject(dc, font);
      GetTextCharsetInfo(dc, &fs, 0);
      SelectObject(dc, oldfont);
      ReleaseDC(nullptr, dc);
      DeleteObject(font);
    }
    if ((fs.fsCsb[0] & info->locale.lsCsbSupported[0]) == 0 && (fs.fsCsb[1] & info->locale.lsCsbSupported[1]) == 0) return 1;
  }
 
  char font_name[MAX_PATH];
  convert_from_fs((const wchar_t *)logfont->elfFullName, font_name, lengthof(font_name));
 
#ifdef WITH_FREETYPE
  /* Add english name after font name */
  std::string english_name = GetEnglishFontName(logfont);
  strecpy(font_name + strlen(font_name) + 1, english_name.c_str(), lastof(font_name));
 
  /* Check whether we can actually load the font. */
  bool ft_init = _library != nullptr;
  bool found = false;
  FT_Face face;
  /* Init FreeType if needed. */
  if ((ft_init || FT_Init_FreeType(&_library) == FT_Err_Ok) && GetFontByFaceName(font_name, &face) == FT_Err_Ok) {
    FT_Done_Face(face);
    found = true;
  }
  if (!ft_init) {
    /* Uninit FreeType if we did the init. */
    FT_Done_FreeType(_library);
    _library = nullptr;
  }
 
  if (!found) return 1;
#else
  const char *english_name = font_name;
#endif /* WITH_FREETYPE */
 
  info->callback->SetFontNames(info->settings, font_name, &logfont->elfLogFont);
  if (info->callback->FindMissingGlyphs()) return 1;
  Debug(fontcache, 1, "Fallback font: {} ({})", font_name, english_name);
  return 0; // stop enumerating
}
 
bool SetFallbackFont(FontCacheSettings *settings, const char *language_isocode, int winlangid, MissingGlyphSearcher *callback)
{
  Debug(fontcache, 1, "Trying fallback fonts");
  EFCParam langInfo;
  if (GetLocaleInfo(MAKELCID(winlangid, SORT_DEFAULT), LOCALE_FONTSIGNATURE, (LPTSTR)&langInfo.locale, sizeof(langInfo.locale) / sizeof(wchar_t)) == 0) {
    /* Invalid langid or some other mysterious error, can't determine fallback font. */
    Debug(fontcache, 1, "Can't get locale info for fallback font (langid=0x{:x})", winlangid);
    return false;
  }
  langInfo.settings = settings;
  langInfo.callback = callback;
 
  LOGFONT font;
  /* Enumerate all fonts. */
  font.lfCharSet = DEFAULT_CHARSET;
  font.lfFaceName[0] = '\0';
  font.lfPitchAndFamily = 0;
 
  HDC dc = GetDC(nullptr);
  int ret = EnumFontFamiliesEx(dc, &font, (FONTENUMPROC)&EnumFontCallback, (LPARAM)&langInfo, 0);
  ReleaseDC(nullptr, dc);
  return ret == 0;
}
 
 
#ifndef ANTIALIASED_QUALITY
#define ANTIALIASED_QUALITY     4
#endif
 
Win32FontCache::Win32FontCache(FontSize fs, const LOGFONT &logfont, int pixels) : TrueTypeFontCache(fs, pixels), logfont(logfont)
{
  this->dc = CreateCompatibleDC(nullptr);
  this->SetFontSize(fs, pixels);
}
 
Win32FontCache::~Win32FontCache()
{
  this->ClearFontCache();
  DeleteDC(this->dc);
  DeleteObject(this->font);
}
 
void Win32FontCache::SetFontSize(FontSize fs, int pixels)
{
  if (pixels == 0) {
    /* Try to determine a good height based on the minimal height recommended by the font. */
    int scaled_height = ScaleGUITrad(FontCache::GetDefaultFontHeight(this->fs));
    pixels = scaled_height;
 
    HFONT temp = CreateFontIndirect(&this->logfont);
    if (temp != nullptr) {
      HGDIOBJ old = SelectObject(this->dc, temp);
 
      UINT size = GetOutlineTextMetrics(this->dc, 0, nullptr);
      LPOUTLINETEXTMETRIC otm = (LPOUTLINETEXTMETRIC)AllocaM(BYTE, size);
      GetOutlineTextMetrics(this->dc, size, otm);
 
      /* Font height is minimum height plus the difference between the default
       * height for this font size and the small size. */
      int diff = scaled_height - ScaleGUITrad(FontCache::GetDefaultFontHeight(FS_SMALL));
      /* Clamp() is not used as scaled_height could be greater than MAX_FONT_SIZE, which is not permitted in Clamp(). */
      pixels = std::min(std::max(std::min<int>(otm->otmusMinimumPPEM, MAX_FONT_MIN_REC_SIZE) + diff, scaled_height), MAX_FONT_SIZE);
 
      SelectObject(dc, old);
      DeleteObject(temp);
    }
  } else {
    pixels = ScaleGUITrad(pixels);
  }
  this->used_size = pixels;
 
  /* Create GDI font handle. */
  this->logfont.lfHeight = -pixels;
  this->logfont.lfWidth = 0;
  this->logfont.lfOutPrecision = ANTIALIASED_QUALITY;
 
  if (this->font != nullptr) {
    SelectObject(dc, this->old_font);
    DeleteObject(this->font);
  }
  this->font = CreateFontIndirect(&this->logfont);
  this->old_font = SelectObject(this->dc, this->font);
 
  /* Query the font metrics we needed. */
  UINT otmSize = GetOutlineTextMetrics(this->dc, 0, nullptr);
  POUTLINETEXTMETRIC otm = (POUTLINETEXTMETRIC)AllocaM(BYTE, otmSize);
  GetOutlineTextMetrics(this->dc, otmSize, otm);
 
  this->units_per_em = otm->otmEMSquare;
  this->ascender = otm->otmTextMetrics.tmAscent;
  this->descender = otm->otmTextMetrics.tmDescent;
  this->height = this->ascender + this->descender;
  this->glyph_size.cx = otm->otmTextMetrics.tmMaxCharWidth;
  this->glyph_size.cy = otm->otmTextMetrics.tmHeight;
 
  this->fontname = FS2OTTD((LPWSTR)((BYTE *)otm + (ptrdiff_t)otm->otmpFaceName));
 
  Debug(fontcache, 2, "Loaded font '{}' with size {}", this->fontname, pixels);
}
 
void Win32FontCache::ClearFontCache()
{
  /* GUI scaling might have changed, determine font size anew if it was automatically selected. */
  if (this->font != nullptr) this->SetFontSize(this->fs, this->req_size);
 
  this->TrueTypeFontCache::ClearFontCache();
}
 
/* virtual */ const Sprite *Win32FontCache::InternalGetGlyph(GlyphID key, bool aa)
{
  GLYPHMETRICS gm;
  MAT2 mat = { {0, 1}, {0, 0}, {0, 0}, {0, 1} };
 
  /* Make a guess for the needed memory size. */
  DWORD size = this->glyph_size.cy * Align(aa ? this->glyph_size.cx : std::max(this->glyph_size.cx / 8l, 1l), 4); // Bitmap data is DWORD-aligned rows.
  byte *bmp = AllocaM(byte, size);
  size = GetGlyphOutline(this->dc, key, GGO_GLYPH_INDEX | (aa ? GGO_GRAY8_BITMAP : GGO_BITMAP), &gm, size, bmp, &mat);
 
  if (size == GDI_ERROR) {
    /* No dice with the guess. First query size of needed glyph memory, then allocate the
     * memory and query again. This dance is necessary as some glyphs will only render with
     * the exact matching size; e.g. the space glyph has no pixels and must be requested
     * with size == 0, anything else fails. Unfortunately, a failed call doesn't return any
     * info about the size and thus the triple GetGlyphOutline()-call. */
    size = GetGlyphOutline(this->dc, key, GGO_GLYPH_INDEX | (aa ? GGO_GRAY8_BITMAP : GGO_BITMAP), &gm, 0, nullptr, &mat);
    if (size == GDI_ERROR) usererror("Unable to render font glyph");
    bmp = AllocaM(byte, size);
    GetGlyphOutline(this->dc, key, GGO_GLYPH_INDEX | (aa ? GGO_GRAY8_BITMAP : GGO_BITMAP), &gm, size, bmp, &mat);
  }
 
  /* Add 1 scaled pixel for the shadow on the medium font. Our sprite must be at least 1x1 pixel. */
  uint shadow = (this->fs == FS_NORMAL) ? ScaleGUITrad(1) : 0;
  uint width = std::max(1U, (uint)gm.gmBlackBoxX + shadow);
  uint height = std::max(1U, (uint)gm.gmBlackBoxY + shadow);
 
  /* Limit glyph size to prevent overflows later on. */
  if (width > MAX_GLYPH_DIM || height > MAX_GLYPH_DIM) usererror("Font glyph is too large");
 
  /* GDI has rendered the glyph, now we allocate a sprite and copy the image into it. */
  SpriteLoader::Sprite sprite;
  sprite.AllocateData(ZOOM_LVL_NORMAL, width * height);
  sprite.type = ST_FONT;
  sprite.colours = (aa ? SCC_PAL | SCC_ALPHA : SCC_PAL);
  sprite.width = width;
  sprite.height = height;
  sprite.x_offs = gm.gmptGlyphOrigin.x;
  sprite.y_offs = this->ascender - gm.gmptGlyphOrigin.y;
 
  if (size > 0) {
    /* All pixel data returned by GDI is in the form of DWORD-aligned rows.
     * For a non anti-aliased glyph, the returned bitmap has one bit per pixel.
     * For anti-aliased rendering, GDI uses the strange value range of 0 to 64,
     * inclusively. To map this to 0 to 255, we shift left by two and then
     * subtract one. */
    uint pitch = Align(aa ? gm.gmBlackBoxX : std::max((gm.gmBlackBoxX + 7u) / 8u, 1u), 4);
 
    /* Draw shadow for medium size. */
    if (this->fs == FS_NORMAL && !aa) {
      for (uint y = 0; y < gm.gmBlackBoxY; y++) {
        for (uint x = 0; x < gm.gmBlackBoxX; x++) {
          if (aa ? (bmp[x + y * pitch] > 0) : HasBit(bmp[(x / 8) + y * pitch], 7 - (x % 8))) {
            sprite.data[shadow + x + (shadow + y) * sprite.width].m = SHADOW_COLOUR;
            sprite.data[shadow + x + (shadow + y) * sprite.width].a = aa ? (bmp[x + y * pitch] << 2) - 1 : 0xFF;
          }
        }
      }
    }
 
    for (uint y = 0; y < gm.gmBlackBoxY; y++) {
      for (uint x = 0; x < gm.gmBlackBoxX; x++) {
        if (aa ? (bmp[x + y * pitch] > 0) : HasBit(bmp[(x / 8) + y * pitch], 7 - (x % 8))) {
          sprite.data[x + y * sprite.width].m = FACE_COLOUR;
          sprite.data[x + y * sprite.width].a = aa ? (bmp[x + y * pitch] << 2) - 1 : 0xFF;
        }
      }
    }
  }
 
  GlyphEntry new_glyph;
  new_glyph.sprite = BlitterFactory::GetCurrentBlitter()->Encode(&sprite, SimpleSpriteAlloc);
  new_glyph.width = gm.gmCellIncX;
 
  this->SetGlyphPtr(key, &new_glyph);
 
  return new_glyph.sprite;
}
 
/* virtual */ GlyphID Win32FontCache::MapCharToGlyph(WChar key)
{
  assert(IsPrintable(key));
 
  if (key >= SCC_SPRITE_START && key <= SCC_SPRITE_END) {
    return this->parent->MapCharToGlyph(key);
  }
 
  /* Convert characters outside of the BMP into surrogate pairs. */
  WCHAR chars[2];
  if (key >= 0x010000U) {
    chars[0] = (wchar_t)(((key - 0x010000U) >> 10) + 0xD800);
    chars[1] = (wchar_t)(((key - 0x010000U) & 0x3FF) + 0xDC00);
  } else {
    chars[0] = (wchar_t)(key & 0xFFFF);
  }
 
  WORD glyphs[2] = { 0, 0 };
  GetGlyphIndicesW(this->dc, chars, key >= 0x010000U ? 2 : 1, glyphs, GGI_MARK_NONEXISTING_GLYPHS);
 
  return glyphs[0] != 0xFFFF ? glyphs[0] : 0;
}
 
/* virtual */ const void *Win32FontCache::InternalGetFontTable(uint32 tag, size_t &length)
{
  DWORD len = GetFontData(this->dc, tag, 0, nullptr, 0);
 
  void *result = nullptr;
  if (len != GDI_ERROR && len > 0) {
    result = MallocT<BYTE>(len);
    GetFontData(this->dc, tag, 0, result, len);
  }
 
  length = len;
  return result;
}
 
 
void LoadWin32Font(FontSize fs)
{
  FontCacheSubSetting *settings = GetFontCacheSubSetting(fs);
 
  if (settings->font.empty()) return;
 
  const char *font_name = settings->font.c_str();
  LOGFONT logfont;
  MemSetT(&logfont, 0);
  logfont.lfPitchAndFamily = fs == FS_MONO ? FIXED_PITCH : VARIABLE_PITCH;
  logfont.lfCharSet = DEFAULT_CHARSET;
  logfont.lfOutPrecision = OUT_OUTLINE_PRECIS;
  logfont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
 
  if (settings->os_handle != nullptr) {
    logfont = *(const LOGFONT *)settings->os_handle;
  } else if (strchr(font_name, '.') != nullptr) {
    /* Might be a font file name, try load it. */
 
    wchar_t fontPath[MAX_PATH] = {};
 
    /* See if this is an absolute path. */
    if (FileExists(settings->font)) {
      convert_to_fs(font_name, fontPath, lengthof(fontPath));
    } else {
      /* Scan the search-paths to see if it can be found. */
      std::string full_font = FioFindFullPath(BASE_DIR, font_name);
      if (!full_font.empty()) {
        convert_to_fs(font_name, fontPath, lengthof(fontPath));
      }
    }
 
    if (fontPath[0] != 0) {
      if (AddFontResourceEx(fontPath, FR_PRIVATE, 0) != 0) {
        /* Try a nice little undocumented function first for getting the internal font name.
         * Some documentation is found at: http://www.undocprint.org/winspool/getfontresourceinfo */
        static DllLoader _gdi32(L"gdi32.dll");
        typedef BOOL(WINAPI *PFNGETFONTRESOURCEINFO)(LPCTSTR, LPDWORD, LPVOID, DWORD);
        static PFNGETFONTRESOURCEINFO GetFontResourceInfo = _gdi32.GetProcAddress("GetFontResourceInfoW");
 
        if (GetFontResourceInfo != nullptr) {
          /* Try to query an array of LOGFONTs that describe the file. */
          DWORD len = 0;
          if (GetFontResourceInfo(fontPath, &len, nullptr, 2) && len >= sizeof(LOGFONT)) {
            LOGFONT *buf = (LOGFONT *)AllocaM(byte, len);
            if (GetFontResourceInfo(fontPath, &len, buf, 2)) {
              logfont = *buf; // Just use first entry.
            }
          }
        }
 
        /* No dice yet. Use the file name as the font face name, hoping it matches. */
        if (logfont.lfFaceName[0] == 0) {
          wchar_t fname[_MAX_FNAME];
          _wsplitpath(fontPath, nullptr, nullptr, fname, nullptr);
 
          wcsncpy_s(logfont.lfFaceName, lengthof(logfont.lfFaceName), fname, _TRUNCATE);
          logfont.lfWeight = strcasestr(font_name, " bold") != nullptr || strcasestr(font_name, "-bold") != nullptr ? FW_BOLD : FW_NORMAL; // Poor man's way to allow selecting bold fonts.
        }
      } else {
        ShowInfoF("Unable to load file '%s' for %s font, using default windows font selection instead", font_name, FontSizeToName(fs));
      }
    }
  }
 
  if (logfont.lfFaceName[0] == 0) {
    logfont.lfWeight = strcasestr(font_name, " bold") != nullptr ? FW_BOLD : FW_NORMAL; // Poor man's way to allow selecting bold fonts.
    convert_to_fs(font_name, logfont.lfFaceName, lengthof(logfont.lfFaceName));
  }
 
  HFONT font = CreateFontIndirect(&logfont);
  if (font == nullptr) {
    ShowInfoF("Unable to use '%s' for %s font, Win32 reported error 0x%lX, using sprite font instead", font_name, FontSizeToName(fs), GetLastError());
    return;
  }
  DeleteObject(font);
 
  new Win32FontCache(fs, logfont, settings->size);
}