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Sweden-Number/dlls/dwrite/dwrite_private.h

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/*
* 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_3.h"
#include "d2d1.h"
#include "winternl.h"
#include "wine/debug.h"
#include "wine/list.h"
#define MS_GSUB_TAG DWRITE_MAKE_OPENTYPE_TAG('G','S','U','B')
#define MS_GPOS_TAG DWRITE_MAKE_OPENTYPE_TAG('G','P','O','S')
static const DWRITE_MATRIX identity =
{
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, 0.0f
};
static inline LPWSTR heap_strdupnW(const WCHAR *str, UINT32 len)
{
WCHAR *ret = NULL;
if (len)
{
ret = malloc((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 const char *debugstr_matrix(const DWRITE_MATRIX *m)
{
if (!m) return "(null)";
return wine_dbg_sprintf("{%.2f,%.2f,%.2f,%.2f,%.2f,%.2f}", m->m11, m->m12, m->m21, m->m22,
m->dx, m->dy);
}
static inline BOOL dwrite_array_reserve(void **elements, size_t *capacity, size_t count, size_t size)
{
size_t new_capacity, max_capacity;
void *new_elements;
if (count <= *capacity)
return TRUE;
max_capacity = ~(SIZE_T)0 / size;
if (count > max_capacity)
return FALSE;
new_capacity = max(4, *capacity);
while (new_capacity < count && new_capacity <= max_capacity / 2)
new_capacity *= 2;
if (new_capacity < count)
new_capacity = max_capacity;
new_elements = realloc(*elements, new_capacity * size);
if (!new_elements)
return FALSE;
*elements = new_elements;
*capacity = new_capacity;
return TRUE;
}
static inline const char *debugstr_tag(DWORD tag)
{
return debugstr_an((char *)&tag, 4);
}
const char *debugstr_sa_script(UINT16) DECLSPEC_HIDDEN;
static inline unsigned short get_table_entry(const unsigned short *table, WCHAR ch)
{
return table[table[table[ch >> 8] + ((ch >> 4) & 0x0f)] + (ch & 0xf)];
}
static inline BOOL is_simulation_valid(DWRITE_FONT_SIMULATIONS simulations)
{
return (simulations & ~(DWRITE_FONT_SIMULATIONS_NONE | DWRITE_FONT_SIMULATIONS_BOLD |
DWRITE_FONT_SIMULATIONS_OBLIQUE)) == 0;
}
struct textlayout_desc
{
IDWriteFactory7 *factory;
const WCHAR *string;
UINT32 length;
IDWriteTextFormat *format;
FLOAT max_width;
FLOAT max_height;
BOOL is_gdi_compatible;
/* fields below are only meaningful for gdi-compatible layout */
FLOAT ppdip;
const DWRITE_MATRIX *transform;
BOOL use_gdi_natural;
};
struct glyphrunanalysis_desc
{
const DWRITE_GLYPH_RUN *run;
const DWRITE_MATRIX *transform;
DWRITE_RENDERING_MODE1 rendering_mode;
DWRITE_MEASURING_MODE measuring_mode;
DWRITE_GRID_FIT_MODE gridfit_mode;
DWRITE_TEXT_ANTIALIAS_MODE aa_mode;
D2D_POINT_2F origin;
};
struct fontface_desc
{
IDWriteFactory7 *factory;
DWRITE_FONT_FACE_TYPE face_type;
IDWriteFontFile *file;
IDWriteFontFileStream *stream;
UINT32 index;
DWRITE_FONT_SIMULATIONS simulations;
struct dwrite_font_data *font_data; /* could be NULL when face is created directly with IDWriteFactory::CreateFontFace() */
};
struct dwrite_fonttable
{
const BYTE *data;
void *context;
UINT32 size;
BOOL exists;
};
struct fontfacecached
{
struct list entry;
IDWriteFontFace5 *fontface;
};
#define GLYPH_BLOCK_SHIFT 8
#define GLYPH_BLOCK_SIZE (1UL << GLYPH_BLOCK_SHIFT)
#define GLYPH_BLOCK_MASK (GLYPH_BLOCK_SIZE - 1)
#define GLYPH_MAX 65536
enum font_flags
{
FONT_IS_SYMBOL = 0x00000001,
FONT_IS_MONOSPACED = 0x00000002,
FONT_IS_COLORED = 0x00000004, /* CPAL/COLR support */
FONTFACE_KERNING_PAIRS = 0x00000008,
FONTFACE_NO_KERNING_PAIRS = 0x00000010,
FONTFACE_VERTICAL_VARIANTS = 0x00000020,
FONTFACE_NO_VERTICAL_VARIANTS = 0x00000040,
};
struct dwrite_cmap;
typedef UINT16 (*p_cmap_get_glyph_func)(const struct dwrite_cmap *cmap, unsigned int ch);
typedef unsigned int (*p_cmap_get_ranges_func)(const struct dwrite_cmap *cmap, unsigned int max_count,
DWRITE_UNICODE_RANGE *ranges);
struct dwrite_cmap
{
const void *data;
union
{
struct
{
unsigned int seg_count;
unsigned int glyph_id_array_len;
const UINT16 *ends;
const UINT16 *starts;
const UINT16 *id_delta;
const UINT16 *id_range_offset;
const UINT16 *glyph_id_array;
} format4;
struct
{
unsigned int first;
unsigned int last;
} format6_10;
struct
{
unsigned int group_count;
} format12_13;
} u;
p_cmap_get_glyph_func get_glyph;
p_cmap_get_ranges_func get_ranges;
unsigned short symbol : 1;
IDWriteFontFileStream *stream;
void *table_context;
};
extern void dwrite_cmap_init(struct dwrite_cmap *cmap, IDWriteFontFile *file, unsigned int face_index,
DWRITE_FONT_FACE_TYPE face_type) DECLSPEC_HIDDEN;
extern void dwrite_cmap_release(struct dwrite_cmap *cmap) DECLSPEC_HIDDEN;
extern UINT16 opentype_cmap_get_glyph(const struct dwrite_cmap *cmap, unsigned int ch) DECLSPEC_HIDDEN;
extern HRESULT opentype_cmap_get_unicode_ranges(const struct dwrite_cmap *cmap, unsigned int max_count,
DWRITE_UNICODE_RANGE *ranges, unsigned int *count) DECLSPEC_HIDDEN;
struct dwrite_fontface;
typedef void * font_object_handle;
typedef font_object_handle (*p_dwrite_fontface_get_font_object)(struct dwrite_fontface *fontface);
struct dwrite_fontface
{
IDWriteFontFace5 IDWriteFontFace5_iface;
IDWriteFontFaceReference IDWriteFontFaceReference_iface;
LONG refcount;
IDWriteFontFileStream *stream;
IDWriteFontFile *file;
UINT32 index;
IDWriteFactory7 *factory;
struct fontfacecached *cached;
font_object_handle font_object;
void *data_context;
p_dwrite_fontface_get_font_object get_font_object;
CRITICAL_SECTION cs;
USHORT simulations;
DWRITE_FONT_FACE_TYPE type;
DWRITE_FONT_METRICS1 metrics;
DWRITE_CARET_METRICS caret;
struct
{
unsigned int ascent;
unsigned int descent;
} typo_metrics;
unsigned int flags;
struct dwrite_cmap cmap;
struct dwrite_fonttable vdmx;
struct dwrite_fonttable gasp;
struct dwrite_fonttable cpal;
struct dwrite_fonttable colr;
struct dwrite_fonttable kern;
DWRITE_GLYPH_METRICS *glyphs[GLYPH_MAX/GLYPH_BLOCK_SIZE];
DWRITE_FONT_STYLE style;
DWRITE_FONT_STRETCH stretch;
DWRITE_FONT_WEIGHT weight;
DWRITE_PANOSE panose;
FONTSIGNATURE fontsig;
UINT32 glyph_image_formats;
IDWriteLocalizedStrings *info_strings[DWRITE_INFORMATIONAL_STRING_SUPPORTED_SCRIPT_LANGUAGE_TAG + 1];
IDWriteLocalizedStrings *family_names;
IDWriteLocalizedStrings *names;
struct scriptshaping_cache *shaping_cache;
LOGFONTW lf;
};
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 struct textlayout_desc*,IDWriteTextLayout**) DECLSPEC_HIDDEN;
extern HRESULT create_trimmingsign(IDWriteFactory7 *factory, IDWriteTextFormat *format,
IDWriteInlineObject **sign) DECLSPEC_HIDDEN;
extern HRESULT create_typography(IDWriteTypography**) DECLSPEC_HIDDEN;
extern HRESULT create_localizedstrings(IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
extern HRESULT add_localizedstring(IDWriteLocalizedStrings*,const WCHAR*,const WCHAR*) DECLSPEC_HIDDEN;
extern HRESULT clone_localizedstrings(IDWriteLocalizedStrings *iface, IDWriteLocalizedStrings **strings) DECLSPEC_HIDDEN;
extern void set_en_localizedstring(IDWriteLocalizedStrings*,const WCHAR*) DECLSPEC_HIDDEN;
extern void sort_localizedstrings(IDWriteLocalizedStrings*) DECLSPEC_HIDDEN;
extern unsigned int get_localizedstrings_count(IDWriteLocalizedStrings *strings) DECLSPEC_HIDDEN;
extern BOOL localizedstrings_contains(IDWriteLocalizedStrings *strings, const WCHAR *str) DECLSPEC_HIDDEN;
extern HRESULT get_system_fontcollection(IDWriteFactory7 *factory, IDWriteFontCollection1 **collection) DECLSPEC_HIDDEN;
extern HRESULT get_eudc_fontcollection(IDWriteFactory7 *factory, IDWriteFontCollection3 **collection) DECLSPEC_HIDDEN;
extern IDWriteTextAnalyzer2 *get_text_analyzer(void) DECLSPEC_HIDDEN;
extern HRESULT create_font_file(IDWriteFontFileLoader *loader, const void *reference_key, UINT32 key_size, IDWriteFontFile **font_file) DECLSPEC_HIDDEN;
extern void init_local_fontfile_loader(void) DECLSPEC_HIDDEN;
extern IDWriteFontFileLoader *get_local_fontfile_loader(void) DECLSPEC_HIDDEN;
extern HRESULT create_fontface(const struct fontface_desc *desc, struct list *cached_list,
IDWriteFontFace5 **fontface) DECLSPEC_HIDDEN;
extern HRESULT create_font_collection(IDWriteFactory7 *factory, IDWriteFontFileEnumerator *enumerator, BOOL is_system,
IDWriteFontCollection3 **collection) DECLSPEC_HIDDEN;
extern HRESULT create_glyphrunanalysis(const struct glyphrunanalysis_desc*,IDWriteGlyphRunAnalysis**) DECLSPEC_HIDDEN;
extern BOOL is_system_collection(IDWriteFontCollection*) DECLSPEC_HIDDEN;
extern HRESULT get_local_refkey(const WCHAR*,const FILETIME*,void**,UINT32*) DECLSPEC_HIDDEN;
extern HRESULT get_filestream_from_file(IDWriteFontFile*,IDWriteFontFileStream**) DECLSPEC_HIDDEN;
extern BOOL is_face_type_supported(DWRITE_FONT_FACE_TYPE) DECLSPEC_HIDDEN;
extern HRESULT get_family_names_from_stream(IDWriteFontFileStream*,UINT32,DWRITE_FONT_FACE_TYPE,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
extern HRESULT create_colorglyphenum(FLOAT,FLOAT,const DWRITE_GLYPH_RUN*,const DWRITE_GLYPH_RUN_DESCRIPTION*,DWRITE_MEASURING_MODE,
const DWRITE_MATRIX*,UINT32,IDWriteColorGlyphRunEnumerator**) DECLSPEC_HIDDEN;
extern BOOL lb_is_newline_char(WCHAR) DECLSPEC_HIDDEN;
extern HRESULT create_system_fontfallback(IDWriteFactory7 *factory, IDWriteFontFallback1 **fallback) DECLSPEC_HIDDEN;
extern void release_system_fontfallback(IDWriteFontFallback1 *fallback) DECLSPEC_HIDDEN;
extern HRESULT create_fontfallback_builder(IDWriteFactory7 *factory, IDWriteFontFallbackBuilder **builder) DECLSPEC_HIDDEN;
extern HRESULT create_matching_font(IDWriteFontCollection*,const WCHAR*,DWRITE_FONT_WEIGHT,DWRITE_FONT_STYLE,DWRITE_FONT_STRETCH,
IDWriteFont**) DECLSPEC_HIDDEN;
extern HRESULT create_fontfacereference(IDWriteFactory7 *factory, IDWriteFontFile *file, UINT32 face_index,
DWRITE_FONT_SIMULATIONS simulations, DWRITE_FONT_AXIS_VALUE const *axis_values, UINT32 axis_values_count,
IDWriteFontFaceReference1 **reference) DECLSPEC_HIDDEN;
extern HRESULT factory_get_cached_fontface(IDWriteFactory7 *factory, IDWriteFontFile * const *files, UINT32 num_files,
DWRITE_FONT_SIMULATIONS simulations, struct list **cache, REFIID riid, void **obj) DECLSPEC_HIDDEN;
extern void factory_detach_fontcollection(IDWriteFactory7 *factory, IDWriteFontCollection3 *collection) DECLSPEC_HIDDEN;
extern void factory_detach_gdiinterop(IDWriteFactory7 *factory, IDWriteGdiInterop1 *interop) DECLSPEC_HIDDEN;
extern struct fontfacecached *factory_cache_fontface(IDWriteFactory7 *factory, struct list *fontfaces,
IDWriteFontFace5 *fontface) DECLSPEC_HIDDEN;
extern void get_logfont_from_font(IDWriteFont*,LOGFONTW*) DECLSPEC_HIDDEN;
extern void get_logfont_from_fontface(IDWriteFontFace*,LOGFONTW*) DECLSPEC_HIDDEN;
extern HRESULT get_fontsig_from_font(IDWriteFont*,FONTSIGNATURE*) DECLSPEC_HIDDEN;
extern HRESULT get_fontsig_from_fontface(IDWriteFontFace*,FONTSIGNATURE*) DECLSPEC_HIDDEN;
extern HRESULT create_gdiinterop(IDWriteFactory7 *factory, IDWriteGdiInterop1 **interop) DECLSPEC_HIDDEN;
extern void fontface_detach_from_cache(IDWriteFontFace5 *fontface) DECLSPEC_HIDDEN;
extern void factory_lock(IDWriteFactory7 *factory) DECLSPEC_HIDDEN;
extern void factory_unlock(IDWriteFactory7 *factory) DECLSPEC_HIDDEN;
extern HRESULT create_inmemory_fileloader(IDWriteInMemoryFontFileLoader **loader) DECLSPEC_HIDDEN;
extern HRESULT create_font_resource(IDWriteFactory7 *factory, IDWriteFontFile *file, UINT32 face_index,
IDWriteFontResource **resource) DECLSPEC_HIDDEN;
extern HRESULT create_fontset_builder(IDWriteFactory7 *factory, IDWriteFontSetBuilder2 **ret) DECLSPEC_HIDDEN;
extern HRESULT compute_glyph_origins(DWRITE_GLYPH_RUN const *run, DWRITE_MEASURING_MODE measuring_mode,
D2D1_POINT_2F baseline_origin, DWRITE_MATRIX const *transform, D2D1_POINT_2F *origins) DECLSPEC_HIDDEN;
struct dwrite_fontface;
extern float fontface_get_scaled_design_advance(struct dwrite_fontface *fontface, DWRITE_MEASURING_MODE measuring_mode,
float emsize, float ppdip, const DWRITE_MATRIX *transform, UINT16 glyph, BOOL is_sideways) DECLSPEC_HIDDEN;
extern struct dwrite_fontface *unsafe_impl_from_IDWriteFontFace(IDWriteFontFace *iface) DECLSPEC_HIDDEN;
/* Opentype font table functions */
struct dwrite_font_props
{
DWRITE_FONT_STYLE style;
DWRITE_FONT_STRETCH stretch;
DWRITE_FONT_WEIGHT weight;
DWRITE_PANOSE panose;
FONTSIGNATURE fontsig;
LOGFONTW lf;
UINT32 flags;
};
struct file_stream_desc {
IDWriteFontFileStream *stream;
DWRITE_FONT_FACE_TYPE face_type;
UINT32 face_index;
};
extern const void* get_fontface_table(IDWriteFontFace5 *fontface, UINT32 tag,
struct dwrite_fonttable *table) DECLSPEC_HIDDEN;
struct tag_array
{
unsigned int *tags;
size_t capacity;
size_t count;
};
struct ot_gsubgpos_table
{
struct dwrite_fonttable table;
unsigned int script_list;
unsigned int feature_list;
unsigned int lookup_list;
};
extern HRESULT opentype_analyze_font(IDWriteFontFileStream*,BOOL*,DWRITE_FONT_FILE_TYPE*,DWRITE_FONT_FACE_TYPE*,UINT32*) DECLSPEC_HIDDEN;
extern HRESULT opentype_try_get_font_table(const struct file_stream_desc *stream_desc, UINT32 tag, const void **data,
void **context, UINT32 *size, BOOL *exists) DECLSPEC_HIDDEN;
extern void opentype_get_font_properties(struct file_stream_desc*,struct dwrite_font_props*) DECLSPEC_HIDDEN;
extern void opentype_get_font_metrics(struct file_stream_desc*,DWRITE_FONT_METRICS1*,DWRITE_CARET_METRICS*) DECLSPEC_HIDDEN;
extern void opentype_get_font_typo_metrics(struct file_stream_desc *stream_desc, unsigned int *ascent,
unsigned int *descent) DECLSPEC_HIDDEN;
extern HRESULT opentype_get_font_info_strings(const struct file_stream_desc *stream_desc,
DWRITE_INFORMATIONAL_STRING_ID id, IDWriteLocalizedStrings **strings) DECLSPEC_HIDDEN;
extern HRESULT opentype_get_font_familyname(struct file_stream_desc*,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
extern HRESULT opentype_get_font_facename(struct file_stream_desc*,WCHAR*,IDWriteLocalizedStrings**) DECLSPEC_HIDDEN;
extern void opentype_get_typographic_features(struct ot_gsubgpos_table *table, unsigned int script_index,
unsigned int language_index, struct tag_array *tags) DECLSPEC_HIDDEN;
extern BOOL opentype_get_vdmx_size(const struct dwrite_fonttable *table, INT ppem, UINT16 *ascent,
UINT16 *descent) DECLSPEC_HIDDEN;
extern unsigned int opentype_get_cpal_palettecount(const struct dwrite_fonttable *table) DECLSPEC_HIDDEN;
extern unsigned int opentype_get_cpal_paletteentrycount(const struct dwrite_fonttable *table) DECLSPEC_HIDDEN;
extern HRESULT opentype_get_cpal_entries(const struct dwrite_fonttable *table, unsigned int palette,
unsigned int first_entry_index, unsigned int entry_count, DWRITE_COLOR_F *entries) DECLSPEC_HIDDEN;
extern UINT32 opentype_get_glyph_image_formats(IDWriteFontFace5 *fontface) DECLSPEC_HIDDEN;
extern DWRITE_CONTAINER_TYPE opentype_analyze_container_type(void const *, UINT32) DECLSPEC_HIDDEN;
extern HRESULT opentype_get_kerning_pairs(struct dwrite_fontface *fontface, unsigned int count,
const UINT16 *glyphs, INT32 *values) DECLSPEC_HIDDEN;
extern BOOL opentype_has_kerning_pairs(struct dwrite_fontface *fontface) DECLSPEC_HIDDEN;
struct dwrite_colorglyph {
USHORT layer; /* [0, num_layers) index indicating current layer */
/* base glyph record data, set once on initialization */
USHORT first_layer;
USHORT num_layers;
/* current layer record data, updated every time glyph is switched to next layer */
UINT16 glyph;
UINT16 palette_index;
};
extern HRESULT opentype_get_colr_glyph(const struct dwrite_fonttable *table, UINT16 glyph,
struct dwrite_colorglyph *color_glyph) DECLSPEC_HIDDEN;
extern void opentype_colr_next_glyph(const struct dwrite_fonttable *table,
struct dwrite_colorglyph *color_glyph) DECLSPEC_HIDDEN;
enum gasp_flags {
GASP_GRIDFIT = 0x0001,
GASP_DOGRAY = 0x0002,
GASP_SYMMETRIC_GRIDFIT = 0x0004,
GASP_SYMMETRIC_SMOOTHING = 0x0008,
};
extern unsigned int opentype_get_gasp_flags(const struct dwrite_fonttable *gasp, float emsize) DECLSPEC_HIDDEN;
/* BiDi helpers */
extern HRESULT bidi_computelevels(const WCHAR*,UINT32,UINT8,UINT8*,UINT8*) DECLSPEC_HIDDEN;
struct dwrite_glyphbitmap
{
void *key;
DWORD simulations;
float emsize;
BOOL nohint;
BOOL aliased;
UINT16 glyph;
INT pitch;
RECT bbox;
BYTE *buf;
DWRITE_MATRIX *m;
};
enum dwrite_outline_tags
{
OUTLINE_BEGIN_FIGURE,
OUTLINE_END_FIGURE,
OUTLINE_LINE,
OUTLINE_BEZIER,
};
struct dwrite_outline
{
struct
{
unsigned char *values;
size_t count;
size_t size;
} tags;
struct
{
D2D1_POINT_2F *values;
size_t count;
size_t size;
} points;
};
/* 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
{
const struct shaping_font_ops *font;
void *context;
UINT16 upem;
struct ot_gsubgpos_table gsub;
struct ot_gsubgpos_table gpos;
struct
{
struct dwrite_fonttable table;
unsigned int classdef;
unsigned int markattachclassdef;
unsigned int markglyphsetdef;
} gdef;
};
struct shaping_glyph_info
{
/* Combined features mask. */
unsigned int mask;
/* Derived from glyph class, supplied by GDEF. */
unsigned int props;
/* Used for GPOS mark and cursive attachments. */
int attach_chain;
/* Only relevant for isClusterStart glyphs. Indicates text position for this cluster. */
unsigned int start_text_idx;
unsigned int codepoint;
};
struct shaping_glyph_properties
{
UINT16 justification : 4;
UINT16 isClusterStart : 1;
UINT16 isDiacritic : 1;
UINT16 isZeroWidthSpace : 1;
UINT16 reserved : 1;
UINT16 components : 4;
UINT16 lig_component : 4;
};
struct scriptshaping_context;
typedef void (*p_apply_context_lookup)(struct scriptshaping_context *context, unsigned int lookup_index);
enum shaping_feature_flags
{
FEATURE_GLOBAL = 0x1,
FEATURE_GLOBAL_SEARCH = 0x2,
FEATURE_MANUAL_ZWNJ = 0x4,
FEATURE_MANUAL_ZWJ = 0x8,
FEATURE_MANUAL_JOINERS = FEATURE_MANUAL_ZWNJ | FEATURE_MANUAL_ZWJ,
FEATURE_HAS_FALLBACK = 0x10,
FEATURE_NEEDS_FALLBACK = 0x20,
};
struct shaping_feature
{
unsigned int tag;
unsigned int index;
unsigned int flags;
unsigned int max_value;
unsigned int default_value;
unsigned int mask;
unsigned int shift;
unsigned int stage;
};
#define MAX_SHAPING_STAGE 16
struct shaping_features;
typedef void (*stage_func)(struct scriptshaping_context *context,
const struct shaping_features *features);
struct shaping_stage
{
stage_func func;
unsigned int last_lookup;
};
struct shaping_features
{
struct shaping_feature *features;
size_t count;
size_t capacity;
unsigned int stage;
struct shaping_stage stages[MAX_SHAPING_STAGE];
};
struct shaper
{
void (*collect_features)(struct scriptshaping_context *context, struct shaping_features *features);
void (*setup_masks)(struct scriptshaping_context *context, const struct shaping_features *features);
};
extern const struct shaper arabic_shaper DECLSPEC_HIDDEN;
extern void shape_enable_feature(struct shaping_features *features, unsigned int tag,
unsigned int flags) DECLSPEC_HIDDEN;
extern void shape_add_feature_full(struct shaping_features *features, unsigned int tag,
unsigned int flags, unsigned int value) DECLSPEC_HIDDEN;
extern unsigned int shape_get_feature_1_mask(const struct shaping_features *features,
unsigned int tag) DECLSPEC_HIDDEN;
extern void shape_start_next_stage(struct shaping_features *features, stage_func func) DECLSPEC_HIDDEN;
struct scriptshaping_context
{
struct scriptshaping_cache *cache;
const struct shaper *shaper;
unsigned int script;
UINT32 language_tag;
const WCHAR *text;
unsigned int length;
BOOL is_rtl;
BOOL is_sideways;
union
{
struct
{
const UINT16 *glyphs;
const DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props;
DWRITE_SHAPING_TEXT_PROPERTIES *text_props;
const UINT16 *clustermap;
p_apply_context_lookup apply_context_lookup;
} pos;
struct
{
UINT16 *glyphs;
DWRITE_SHAPING_GLYPH_PROPERTIES *glyph_props;
DWRITE_SHAPING_TEXT_PROPERTIES *text_props;
UINT16 *clustermap;
p_apply_context_lookup apply_context_lookup;
unsigned int max_glyph_count;
unsigned int capacity;
const WCHAR *digits;
} subst;
struct
{
UINT16 *glyphs;
struct shaping_glyph_properties *glyph_props;
DWRITE_SHAPING_TEXT_PROPERTIES *text_props;
UINT16 *clustermap;
p_apply_context_lookup apply_context_lookup;
} buffer;
} u;
const struct ot_gsubgpos_table *table; /* Either GSUB or GPOS. */
struct
{
const DWRITE_TYPOGRAPHIC_FEATURES **features;
const unsigned int *range_lengths;
unsigned int range_count;
} user_features;
unsigned int global_mask;
unsigned int lookup_mask; /* Currently processed feature mask, set in main loop. */
unsigned int auto_zwj;
unsigned int auto_zwnj;
struct shaping_glyph_info *glyph_infos;
unsigned int has_gpos_attachment : 1;
unsigned int cur;
unsigned int glyph_count;
unsigned int nesting_level_left;
float emsize;
DWRITE_MEASURING_MODE measuring_mode;
float *advances;
DWRITE_GLYPH_OFFSET *offsets;
};
struct shaping_font_ops
{
void (*grab_font_table)(void *context, UINT32 table, const BYTE **data, UINT32 *size, void **data_context);
void (*release_font_table)(void *context, void *data_context);
UINT16 (*get_font_upem)(void *context);
BOOL (*has_glyph)(void *context, unsigned int codepoint);
UINT16 (*get_glyph)(void *context, unsigned int codepoint);
};
extern struct scriptshaping_cache *create_scriptshaping_cache(void *context,
const struct shaping_font_ops *font_ops) DECLSPEC_HIDDEN;
extern void release_scriptshaping_cache(struct scriptshaping_cache*) DECLSPEC_HIDDEN;
extern struct scriptshaping_cache *fontface_get_shaping_cache(struct dwrite_fontface *fontface) DECLSPEC_HIDDEN;
extern void opentype_layout_scriptshaping_cache_init(struct scriptshaping_cache *cache) DECLSPEC_HIDDEN;
extern DWORD opentype_layout_find_script(const struct scriptshaping_cache *cache, DWORD kind, DWORD tag,
unsigned int *script_index) DECLSPEC_HIDDEN;
extern DWORD opentype_layout_find_language(const struct scriptshaping_cache *cache, DWORD kind, DWORD tag,
unsigned int script_index, unsigned int *language_index) DECLSPEC_HIDDEN;
extern void opentype_layout_apply_gsub_features(struct scriptshaping_context *context, unsigned int script_index,
unsigned int language_index, struct shaping_features *features) DECLSPEC_HIDDEN;
extern void opentype_layout_apply_gpos_features(struct scriptshaping_context *context, unsigned int script_index,
unsigned int language_index, struct shaping_features *features) DECLSPEC_HIDDEN;
extern BOOL opentype_layout_check_feature(struct scriptshaping_context *context, unsigned int script_index,
unsigned int language_index, struct shaping_feature *feature, unsigned int glyph_count,
const UINT16 *glyphs, UINT8 *feature_applies) DECLSPEC_HIDDEN;
extern void opentype_layout_unsafe_to_break(struct scriptshaping_context *context, unsigned int start,
unsigned int end) DECLSPEC_HIDDEN;
extern BOOL opentype_has_vertical_variants(struct dwrite_fontface *fontface) DECLSPEC_HIDDEN;
extern HRESULT opentype_get_vertical_glyph_variants(struct dwrite_fontface *fontface, unsigned int glyph_count,
const UINT16 *nominal_glyphs, UINT16 *glyphs) DECLSPEC_HIDDEN;
extern HRESULT shape_get_glyphs(struct scriptshaping_context *context, const unsigned int *scripts) DECLSPEC_HIDDEN;
extern HRESULT shape_get_positions(struct scriptshaping_context *context, const unsigned int *scripts) DECLSPEC_HIDDEN;
extern HRESULT shape_get_typographic_features(struct scriptshaping_context *context, const unsigned int *scripts,
unsigned int max_tagcount, unsigned int *actual_tagcount, unsigned int *tags) DECLSPEC_HIDDEN;
extern HRESULT shape_check_typographic_feature(struct scriptshaping_context *context, const unsigned int *scripts,
unsigned int tag, unsigned int glyph_count, const UINT16 *glyphs, UINT8 *feature_applies) DECLSPEC_HIDDEN;
struct font_data_context;
extern HMODULE dwrite_module DECLSPEC_HIDDEN;
struct font_callback_funcs
{
int (CDECL *get_font_data)(void *key, const void **data_ptr, UINT64 *data_size, unsigned int *index,
struct font_data_context **context);
void (CDECL *release_font_data)(struct font_data_context *context);
};
struct font_backend_funcs
{
font_object_handle (CDECL *create_font_object)(const void *data_ptr, UINT64 data_size, unsigned int index);
void (CDECL *release_font_object)(font_object_handle object);
void (CDECL *notify_release)(void *key);
int (CDECL *get_glyph_outline)(font_object_handle object, float emsize, unsigned int simulations, UINT16 glyph,
struct dwrite_outline *outline);
UINT16 (CDECL *get_glyph_count)(font_object_handle object);
INT32 (CDECL *get_glyph_advance)(void *key, float em_size, UINT16 index, DWRITE_MEASURING_MODE measuring_mode,
BOOL *has_contours);
void (CDECL *get_glyph_bbox)(struct dwrite_glyphbitmap *bitmap_desc);
BOOL (CDECL *get_glyph_bitmap)(struct dwrite_glyphbitmap *bitmap_desc);
void (CDECL *get_design_glyph_metrics)(font_object_handle object, UINT16 upem, UINT16 ascent, unsigned int simulations,
UINT16 glyph, DWRITE_GLYPH_METRICS *metrics);
};
extern void init_font_backend(void) DECLSPEC_HIDDEN;
extern void release_font_backend(void) DECLSPEC_HIDDEN;
extern void dwrite_fontface_get_glyph_bbox(struct dwrite_glyphbitmap *bitmap) DECLSPEC_HIDDEN;
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