text: /*
   * Copyright 2012 Nikolay Sivov for CodeWeavers
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "dwrite_2.h"
  
  #include "wine/debug.h"
  #include "wine/unicode.h"
  
  static inline void *heap_alloc(size_t len)
  {
      return HeapAlloc(GetProcessHeap(), 0, len);
  }
  
  static inline void *heap_alloc_zero(size_t len)
  {
      return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
  }
  
  static inline void *heap_realloc(void *mem, size_t len)
  {
      return HeapReAlloc(GetProcessHeap(), 0, mem, len);
  }
  
  static inline void *heap_realloc_zero(void *mem, size_t len)
  {
      return HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len);
  }
  
  static inline BOOL heap_free(void *mem)
  {
      return HeapFree(GetProcessHeap(), 0, mem);
  }
  
  static inline LPWSTR heap_strdupW(const WCHAR *str)
  {
      LPWSTR ret = NULL;
  
      if(str) {
          DWORD size;
  
          size = (strlenW(str)+1)*sizeof(WCHAR);
          ret = heap_alloc(size);
          if(ret)
              memcpy(ret, str, size);
      }
  
      return ret;
  }
  
  static inline LPWSTR heap_strdupnW(const WCHAR *str, UINT32 len)
  {
      WCHAR *ret = NULL;
  
      if (len)
      {
          ret = heap_alloc((len+1)*sizeof(WCHAR));
          if(ret)
          {
              memcpy(ret, str, len*sizeof(WCHAR));
              ret[len] = 0;
          }
      }
  
      return ret;
  }
  
  static inline const char *debugstr_range(const DWRITE_TEXT_RANGE *range)
  {
      return wine_dbg_sprintf("%u:%u", range->startPosition, range->length);
  }
  
  static inline unsigned short get_table_entry(const unsigned short *table, WCHAR ch)
  {
      return table[table[table[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
  }
  
  extern HRESULT convert_fontface_to_logfont(IDWriteFontFace*, LOGFONTW*) DECLSPEC_HIDDEN;
  extern HRESULT create_numbersubstitution(DWRITE_NUMBER_SUBSTITUTION_METHOD,const WCHAR *locale,BOOL,IDWriteNumberSubstitution**) DECLSPEC_HIDDEN;
  extern HRESULT create_textformat(const WCHAR*,IDWriteFontCollection*,DWRITE_FONT_WEIGHT,DWRITE_FONT_STYLE,DWRITE_FONT_STRETCH,
                                   FLOAT,const WCHAR*,IDWriteTextFormat**) DECLSPEC_HIDDEN;
  extern HRESULT create_textlayout(const WCHAR*,UINT32,IDWriteTextFormat*,FLOAT,FLOAT,IDWriteTextLayout**) DECLSPEC_HIDDEN;
  extern HRESULT create_trimmingsign(IDWriteInlineObject**) DECLSPEC_HIDDEN;
  extern HRESULT create_typography(IDWriteTypography**) DECLSPEC_HIDDEN;
  extern HRESULT create_gdiinterop(IDWriteFactory*,IDWriteGdiInterop**) DECLSPEC_HIDDEN;
  extern void    release_gdiinterop(IDWriteGdiInterop*) DECLSPEC_HIDDEN;
  extern HRESULT create_localizedstrings(IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
  extern HRESULT add_localizedstring(IDWriteLocalizedStrings*,const WCHAR*,const WCHAR*) DECLSPEC_HIDDEN;
  extern HRESULT clone_localizedstring(IDWriteLocalizedStrings *iface, IDWriteLocalizedStrings **strings) DECLSPEC_HIDDEN;
  extern HRESULT get_system_fontcollection(IDWriteFactory*,IDWriteFontCollection**) DECLSPEC_HIDDEN;
  extern HRESULT get_textanalyzer(IDWriteTextAnalyzer**) DECLSPEC_HIDDEN;
  extern HRESULT create_font_file(IDWriteFontFileLoader *loader, const void *reference_key, UINT32 key_size, IDWriteFontFile **font_file) DECLSPEC_HIDDEN;
  extern HRESULT create_localfontfileloader(IDWriteLocalFontFileLoader** iface) DECLSPEC_HIDDEN;
  extern HRESULT create_fontface(DWRITE_FONT_FACE_TYPE,UINT32,IDWriteFontFile* const*,UINT32,DWRITE_FONT_SIMULATIONS,IDWriteFontFace2**) DECLSPEC_HIDDEN;
  extern HRESULT create_font_collection(IDWriteFactory*,IDWriteFontFileEnumerator*,BOOL,IDWriteFontCollection**) DECLSPEC_HIDDEN;
  extern BOOL    is_system_collection(IDWriteFontCollection*) DECLSPEC_HIDDEN;
  
  /* Opentype font table functions */
  extern HRESULT opentype_analyze_font(IDWriteFontFileStream*,UINT32*,DWRITE_FONT_FILE_TYPE*,DWRITE_FONT_FACE_TYPE*,BOOL*) DECLSPEC_HIDDEN;
  extern HRESULT opentype_get_font_table(IDWriteFontFileStream*,DWRITE_FONT_FACE_TYPE,UINT32,UINT32,const void**,void**,UINT32*,BOOL*) DECLSPEC_HIDDEN;
  extern void opentype_cmap_get_glyphindex(void*,UINT32,UINT16*) DECLSPEC_HIDDEN;
  extern HRESULT opentype_cmap_get_unicode_ranges(void*,UINT32,DWRITE_UNICODE_RANGE*,UINT32*) DECLSPEC_HIDDEN;
  extern void opentype_get_font_properties(const void*,const void*,DWRITE_FONT_STRETCH*,DWRITE_FONT_WEIGHT*,DWRITE_FONT_STYLE*) DECLSPEC_HIDDEN;
  extern void opentype_get_font_metrics(const void*,const void*,const void*,DWRITE_FONT_METRICS1*) DECLSPEC_HIDDEN;
  extern HRESULT opentype_get_font_strings_from_id(const void*,DWRITE_INFORMATIONAL_STRING_ID,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
  
  extern HRESULT bidi_computelevels(const WCHAR*,UINT32,UINT8,UINT8*,UINT8*) DECLSPEC_HIDDEN;
  extern WCHAR bidi_get_mirrored_char(WCHAR) DECLSPEC_HIDDEN;
  
  /* Glyph shaping */
  enum SCRIPT_JUSTIFY
  {
      SCRIPT_JUSTIFY_NONE,
      SCRIPT_JUSTIFY_ARABIC_BLANK,
      SCRIPT_JUSTIFY_CHARACTER,
      SCRIPT_JUSTIFY_RESERVED1,
      SCRIPT_JUSTIFY_BLANK,
      SCRIPT_JUSTIFY_RESERVED2,
      SCRIPT_JUSTIFY_RESERVED3,
      SCRIPT_JUSTIFY_ARABIC_NORMAL,
      SCRIPT_JUSTIFY_ARABIC_KASHIDA,
      SCRIPT_JUSTIFY_ARABIC_ALEF,
      SCRIPT_JUSTIFY_ARABIC_HA,
      SCRIPT_JUSTIFY_ARABIC_RA,
      SCRIPT_JUSTIFY_ARABIC_BA,
      SCRIPT_JUSTIFY_ARABIC_BARA,
      SCRIPT_JUSTIFY_ARABIC_SEEN,
      SCRIPT_JUSTIFY_ARABIC_SEEN_M
  };
  
  struct scriptshaping_cache;
  
  struct scriptshaping_context
  {
      struct scriptshaping_cache *cache;
      UINT32 language_tag;
  
      const WCHAR *text;
      UINT32 length;
      BOOL is_rtl;
  
      UINT32 max_glyph_count;
  };
  
  extern HRESULT create_scriptshaping_cache(IDWriteFontFace*,struct scriptshaping_cache**) DECLSPEC_HIDDEN;
  extern void release_scriptshaping_cache(struct scriptshaping_cache*) DECLSPEC_HIDDEN;
  
  struct scriptshaping_ops
  {
      HRESULT (*contextual_shaping)(struct scriptshaping_context *context, UINT16 *clustermap, UINT16 *glyph_indices, UINT32* actual_glyph_count);
      HRESULT (*set_text_glyphs_props)(struct scriptshaping_context *context, UINT16 *clustermap, UINT16 *glyph_indices,
                                       UINT32 glyphcount, DWRITE_SHAPING_TEXT_PROPERTIES *text_props, DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props);
  };
  
  extern const struct scriptshaping_ops default_shaping_ops DECLSPEC_HIDDEN;
  extern const struct scriptshaping_ops latn_shaping_ops DECLSPEC_HIDDEN;
  