dlls/dwrite/dwrite_private.h

   1 /*
   2  * Copyright 2012 Nikolay Sivov for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "dwrite_2.h"
  20 #include "d2d1.h"
  21
  22 #include "wine/debug.h"
  23 #include "wine/unicode.h"
  24
  25 static const DWRITE_MATRIX identity =
  26 {
  27     1.0f, 0.0f,
  28     0.0f, 1.0f,
  29     0.0f, 0.0f
  30 };
  31
  32 static inline void *heap_alloc(size_t len)
  33 {
  34     return HeapAlloc(GetProcessHeap(), 0, len);
  35 }
  36
  37 static inline void *heap_alloc_zero(size_t len)
  38 {
  39     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len);
  40 }
  41
  42 static inline void *heap_realloc(void *mem, size_t len)
  43 {
  44     return HeapReAlloc(GetProcessHeap(), 0, mem, len);
  45 }
  46
  47 static inline void *heap_realloc_zero(void *mem, size_t len)
  48 {
  49     return HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, mem, len);
  50 }
  51
  52 static inline BOOL heap_free(void *mem)
  53 {
  54     return HeapFree(GetProcessHeap(), 0, mem);
  55 }
  56
  57 static inline LPWSTR heap_strdupW(const WCHAR *str)
  58 {
  59     LPWSTR ret = NULL;
  60
  61     if(str) {
  62         DWORD size;
  63
  64         size = (strlenW(str)+1)*sizeof(WCHAR);
  65         ret = heap_alloc(size);
  66         if(ret)
  67             memcpy(ret, str, size);
  68     }
  69
  70     return ret;
  71 }
  72
  73 static inline LPWSTR heap_strdupnW(const WCHAR *str, UINT32 len)
  74 {
  75     WCHAR *ret = NULL;
  76
  77     if (len)
  78     {
  79         ret = heap_alloc((len+1)*sizeof(WCHAR));
  80         if(ret)
  81         {
  82             memcpy(ret, str, len*sizeof(WCHAR));
  83             ret[len] = 0;
  84         }
  85     }
  86
  87     return ret;
  88 }
  89
  90 static inline const char *debugstr_range(const DWRITE_TEXT_RANGE *range)
  91 {
  92     return wine_dbg_sprintf("%u:%u", range->startPosition, range->length);
  93 }
  94
  95 static inline unsigned short get_table_entry(const unsigned short *table, WCHAR ch)
  96 {
  97     return table[table[table[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
  98 }
  99
 100 extern HRESULT convert_fontface_to_logfont(IDWriteFontFace*, LOGFONTW*) DECLSPEC_HIDDEN;
 101 extern HRESULT create_numbersubstitution(DWRITE_NUMBER_SUBSTITUTION_METHOD,const WCHAR *locale,BOOL,IDWriteNumberSubstitution**) DECLSPEC_HIDDEN;
 102 extern HRESULT create_textformat(const WCHAR*,IDWriteFontCollection*,DWRITE_FONT_WEIGHT,DWRITE_FONT_STYLE,DWRITE_FONT_STRETCH,
 103                                  FLOAT,const WCHAR*,IDWriteTextFormat**) DECLSPEC_HIDDEN;
 104 extern HRESULT create_textlayout(const WCHAR*,UINT32,IDWriteTextFormat*,FLOAT,FLOAT,IDWriteTextLayout**) DECLSPEC_HIDDEN;
 105 extern HRESULT create_gdicompat_textlayout(const WCHAR*,UINT32,IDWriteTextFormat*,FLOAT,FLOAT,FLOAT,const DWRITE_MATRIX*,BOOL,IDWriteTextLayout**) DECLSPEC_HIDDEN;
 106 extern HRESULT create_trimmingsign(IDWriteInlineObject**) DECLSPEC_HIDDEN;
 107 extern HRESULT create_typography(IDWriteTypography**) DECLSPEC_HIDDEN;
 108 extern HRESULT create_gdiinterop(IDWriteFactory2*,IDWriteGdiInterop**) DECLSPEC_HIDDEN;
 109 extern void    release_gdiinterop(IDWriteGdiInterop*) DECLSPEC_HIDDEN;
 110 extern HRESULT create_localizedstrings(IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
 111 extern HRESULT add_localizedstring(IDWriteLocalizedStrings*,const WCHAR*,const WCHAR*) DECLSPEC_HIDDEN;
 112 extern HRESULT clone_localizedstring(IDWriteLocalizedStrings *iface, IDWriteLocalizedStrings **strings) DECLSPEC_HIDDEN;
 113 extern HRESULT get_system_fontcollection(IDWriteFactory2*,IDWriteFontCollection**) DECLSPEC_HIDDEN;
 114 extern HRESULT get_eudc_fontcollection(IDWriteFactory2*,IDWriteFontCollection**) DECLSPEC_HIDDEN;
 115 extern HRESULT get_textanalyzer(IDWriteTextAnalyzer**) DECLSPEC_HIDDEN;
 116 extern HRESULT create_font_file(IDWriteFontFileLoader *loader, const void *reference_key, UINT32 key_size, IDWriteFontFile **font_file) DECLSPEC_HIDDEN;
 117 extern HRESULT create_localfontfileloader(IDWriteLocalFontFileLoader** iface) DECLSPEC_HIDDEN;
 118 extern HRESULT create_fontface(DWRITE_FONT_FACE_TYPE,UINT32,IDWriteFontFile* const*,UINT32,DWRITE_FONT_SIMULATIONS,IDWriteFontFace2**) DECLSPEC_HIDDEN;
 119 extern HRESULT create_font_collection(IDWriteFactory2*,IDWriteFontFileEnumerator*,BOOL,IDWriteFontCollection**) DECLSPEC_HIDDEN;
 120 extern BOOL    is_system_collection(IDWriteFontCollection*) DECLSPEC_HIDDEN;
 121 extern HRESULT get_local_refkey(const WCHAR*,const FILETIME*,void**,UINT32*) DECLSPEC_HIDDEN;
 122 extern HRESULT get_filestream_from_file(IDWriteFontFile*,IDWriteFontFileStream**) DECLSPEC_HIDDEN;
 123 extern BOOL    is_face_type_supported(DWRITE_FONT_FACE_TYPE) DECLSPEC_HIDDEN;
 124 extern HRESULT get_family_names_from_stream(IDWriteFontFileStream*,UINT32,DWRITE_FONT_FACE_TYPE,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
 125
 126 /* Opentype font table functions */
 127 extern HRESULT opentype_analyze_font(IDWriteFontFileStream*,UINT32*,DWRITE_FONT_FILE_TYPE*,DWRITE_FONT_FACE_TYPE*,BOOL*) DECLSPEC_HIDDEN;
 128 extern HRESULT opentype_get_font_table(IDWriteFontFileStream*,DWRITE_FONT_FACE_TYPE,UINT32,UINT32,const void**,void**,UINT32*,BOOL*) DECLSPEC_HIDDEN;
 129 extern HRESULT opentype_cmap_get_unicode_ranges(void*,UINT32,DWRITE_UNICODE_RANGE*,UINT32*) DECLSPEC_HIDDEN;
 130 extern void opentype_get_font_properties(IDWriteFontFileStream*,DWRITE_FONT_FACE_TYPE,UINT32,DWRITE_FONT_STRETCH*,
 131     DWRITE_FONT_WEIGHT*,DWRITE_FONT_STYLE*) DECLSPEC_HIDDEN;
 132 extern void opentype_get_font_metrics(IDWriteFontFileStream*,DWRITE_FONT_FACE_TYPE,UINT32,DWRITE_FONT_METRICS1*,DWRITE_CARET_METRICS*) DECLSPEC_HIDDEN;
 133 extern HRESULT opentype_get_font_strings_from_id(const void*,DWRITE_INFORMATIONAL_STRING_ID,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
 134 extern HRESULT opentype_get_typographic_features(IDWriteFontFace*,UINT32,UINT32,UINT32,UINT32*,DWRITE_FONT_FEATURE_TAG*) DECLSPEC_HIDDEN;
 135
 136 /* BiDi helpers */
 137 extern HRESULT bidi_computelevels(const WCHAR*,UINT32,UINT8,UINT8*,UINT8*) DECLSPEC_HIDDEN;
 138 extern WCHAR bidi_get_mirrored_char(WCHAR) DECLSPEC_HIDDEN;
 139
 140 enum outline_point_tag {
 141     OUTLINE_POINT_START  = 1 << 0,
 142     OUTLINE_POINT_END    = 1 << 1,
 143     OUTLINE_POINT_BEZIER = 1 << 2,
 144     OUTLINE_POINT_LINE   = 1 << 3
 145 };
 146
 147 struct glyph_outline {
 148     D2D1_POINT_2F *points;
 149     UINT8 *tags;
 150     UINT16 count;
 151     FLOAT  advance;
 152 };
 153
 154 extern HRESULT new_glyph_outline(UINT32,struct glyph_outline**) DECLSPEC_HIDDEN;
 155
 156 /* FreeType integration */
 157 extern BOOL init_freetype(void) DECLSPEC_HIDDEN;
 158 extern void release_freetype(void) DECLSPEC_HIDDEN;
 159 extern HRESULT freetype_get_design_glyph_metrics(IDWriteFontFace2*,UINT16,UINT16,DWRITE_GLYPH_METRICS*) DECLSPEC_HIDDEN;
 160 extern void freetype_notify_cacheremove(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 161 extern BOOL freetype_is_monospaced(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 162 extern HRESULT freetype_get_glyph_outline(IDWriteFontFace2*,FLOAT,UINT16,USHORT,struct glyph_outline**) DECLSPEC_HIDDEN;
 163 extern UINT16 freetype_get_glyphcount(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 164 extern UINT16 freetype_get_glyphindex(IDWriteFontFace2*,UINT32) DECLSPEC_HIDDEN;
 165 extern BOOL freetype_has_kerning_pairs(IDWriteFontFace2*) DECLSPEC_HIDDEN;
 166 extern INT32 freetype_get_kerning_pair_adjustment(IDWriteFontFace2*,UINT16,UINT16) DECLSPEC_HIDDEN;
 167
 168 /* Glyph shaping */
 169 enum SCRIPT_JUSTIFY
 170 {
 171     SCRIPT_JUSTIFY_NONE,
 172     SCRIPT_JUSTIFY_ARABIC_BLANK,
 173     SCRIPT_JUSTIFY_CHARACTER,
 174     SCRIPT_JUSTIFY_RESERVED1,
 175     SCRIPT_JUSTIFY_BLANK,
 176     SCRIPT_JUSTIFY_RESERVED2,
 177     SCRIPT_JUSTIFY_RESERVED3,
 178     SCRIPT_JUSTIFY_ARABIC_NORMAL,
 179     SCRIPT_JUSTIFY_ARABIC_KASHIDA,
 180     SCRIPT_JUSTIFY_ARABIC_ALEF,
 181     SCRIPT_JUSTIFY_ARABIC_HA,
 182     SCRIPT_JUSTIFY_ARABIC_RA,
 183     SCRIPT_JUSTIFY_ARABIC_BA,
 184     SCRIPT_JUSTIFY_ARABIC_BARA,
 185     SCRIPT_JUSTIFY_ARABIC_SEEN,
 186     SCRIPT_JUSTIFY_ARABIC_SEEN_M
 187 };
 188
 189 struct scriptshaping_cache;
 190
 191 struct scriptshaping_context
 192 {
 193     struct scriptshaping_cache *cache;
 194     UINT32 language_tag;
 195
 196     const WCHAR *text;
 197     UINT32 length;
 198     BOOL is_rtl;
 199
 200     UINT32 max_glyph_count;
 201 };
 202
 203 extern HRESULT create_scriptshaping_cache(IDWriteFontFace*,struct scriptshaping_cache**) DECLSPEC_HIDDEN;
 204 extern void release_scriptshaping_cache(struct scriptshaping_cache*) DECLSPEC_HIDDEN;
 205
 206 struct scriptshaping_ops
 207 {
 208     HRESULT (*contextual_shaping)(struct scriptshaping_context *context, UINT16 *clustermap, UINT16 *glyph_indices, UINT32* actual_glyph_count);
 209     HRESULT (*set_text_glyphs_props)(struct scriptshaping_context *context, UINT16 *clustermap, UINT16 *glyph_indices,
 210                                      UINT32 glyphcount, DWRITE_SHAPING_TEXT_PROPERTIES *text_props, DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props);
 211 };
 212
 213 extern const struct scriptshaping_ops default_shaping_ops DECLSPEC_HIDDEN;
 214 extern const struct scriptshaping_ops latn_shaping_ops DECLSPEC_HIDDEN;