diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-uniscribe.cc')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-uniscribe.cc | 1015 |
1 files changed, 0 insertions, 1015 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-uniscribe.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-uniscribe.cc deleted file mode 100644 index 65a63f3be54..00000000000 --- a/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-uniscribe.cc +++ /dev/null @@ -1,1015 +0,0 @@ -/* - * Copyright © 2011,2012,2013 Google, Inc. - * - * This is part of HarfBuzz, a text shaping library. - * - * Permission is hereby granted, without written agreement and without - * license or royalty fees, to use, copy, modify, and distribute this - * software and its documentation for any purpose, provided that the - * above copyright notice and the following two paragraphs appear in - * all copies of this software. - * - * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR - * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES - * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN - * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, - * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS - * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO - * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. - * - * Google Author(s): Behdad Esfahbod - */ - -#define _WIN32_WINNT 0x0600 -#define WIN32_LEAN_AND_MEAN - -#define HB_SHAPER uniscribe -#include "hb-shaper-impl-private.hh" - -#include <windows.h> -#include <usp10.h> -#include <rpc.h> - -#include "hb-uniscribe.h" - -#include "hb-open-file-private.hh" -#include "hb-ot-name-table.hh" -#include "hb-ot-tag.h" - - -#ifndef HB_DEBUG_UNISCRIBE -#define HB_DEBUG_UNISCRIBE (HB_DEBUG+0) -#endif - - -typedef HRESULT (WINAPI *SIOT) /*ScriptItemizeOpenType*/( - const WCHAR *pwcInChars, - int cInChars, - int cMaxItems, - const SCRIPT_CONTROL *psControl, - const SCRIPT_STATE *psState, - SCRIPT_ITEM *pItems, - OPENTYPE_TAG *pScriptTags, - int *pcItems -); - -typedef HRESULT (WINAPI *SSOT) /*ScriptShapeOpenType*/( - HDC hdc, - SCRIPT_CACHE *psc, - SCRIPT_ANALYSIS *psa, - OPENTYPE_TAG tagScript, - OPENTYPE_TAG tagLangSys, - int *rcRangeChars, - TEXTRANGE_PROPERTIES **rpRangeProperties, - int cRanges, - const WCHAR *pwcChars, - int cChars, - int cMaxGlyphs, - WORD *pwLogClust, - SCRIPT_CHARPROP *pCharProps, - WORD *pwOutGlyphs, - SCRIPT_GLYPHPROP *pOutGlyphProps, - int *pcGlyphs -); - -typedef HRESULT (WINAPI *SPOT) /*ScriptPlaceOpenType*/( - HDC hdc, - SCRIPT_CACHE *psc, - SCRIPT_ANALYSIS *psa, - OPENTYPE_TAG tagScript, - OPENTYPE_TAG tagLangSys, - int *rcRangeChars, - TEXTRANGE_PROPERTIES **rpRangeProperties, - int cRanges, - const WCHAR *pwcChars, - WORD *pwLogClust, - SCRIPT_CHARPROP *pCharProps, - int cChars, - const WORD *pwGlyphs, - const SCRIPT_GLYPHPROP *pGlyphProps, - int cGlyphs, - int *piAdvance, - GOFFSET *pGoffset, - ABC *pABC -); - - -/* Fallback implementations. */ - -static HRESULT WINAPI -hb_ScriptItemizeOpenType( - const WCHAR *pwcInChars, - int cInChars, - int cMaxItems, - const SCRIPT_CONTROL *psControl, - const SCRIPT_STATE *psState, - SCRIPT_ITEM *pItems, - OPENTYPE_TAG *pScriptTags, - int *pcItems -) -{ -{ - return ScriptItemize (pwcInChars, - cInChars, - cMaxItems, - psControl, - psState, - pItems, - pcItems); -} -} - -static HRESULT WINAPI -hb_ScriptShapeOpenType( - HDC hdc, - SCRIPT_CACHE *psc, - SCRIPT_ANALYSIS *psa, - OPENTYPE_TAG tagScript, - OPENTYPE_TAG tagLangSys, - int *rcRangeChars, - TEXTRANGE_PROPERTIES **rpRangeProperties, - int cRanges, - const WCHAR *pwcChars, - int cChars, - int cMaxGlyphs, - WORD *pwLogClust, - SCRIPT_CHARPROP *pCharProps, - WORD *pwOutGlyphs, - SCRIPT_GLYPHPROP *pOutGlyphProps, - int *pcGlyphs -) -{ - SCRIPT_VISATTR *psva = (SCRIPT_VISATTR *) pOutGlyphProps; - return ScriptShape (hdc, - psc, - pwcChars, - cChars, - cMaxGlyphs, - psa, - pwOutGlyphs, - pwLogClust, - psva, - pcGlyphs); -} - -static HRESULT WINAPI -hb_ScriptPlaceOpenType( - HDC hdc, - SCRIPT_CACHE *psc, - SCRIPT_ANALYSIS *psa, - OPENTYPE_TAG tagScript, - OPENTYPE_TAG tagLangSys, - int *rcRangeChars, - TEXTRANGE_PROPERTIES **rpRangeProperties, - int cRanges, - const WCHAR *pwcChars, - WORD *pwLogClust, - SCRIPT_CHARPROP *pCharProps, - int cChars, - const WORD *pwGlyphs, - const SCRIPT_GLYPHPROP *pGlyphProps, - int cGlyphs, - int *piAdvance, - GOFFSET *pGoffset, - ABC *pABC -) -{ - SCRIPT_VISATTR *psva = (SCRIPT_VISATTR *) pGlyphProps; - return ScriptPlace (hdc, - psc, - pwGlyphs, - cGlyphs, - psva, - psa, - piAdvance, - pGoffset, - pABC); -} - - -struct hb_uniscribe_shaper_funcs_t { - SIOT ScriptItemizeOpenType; - SSOT ScriptShapeOpenType; - SPOT ScriptPlaceOpenType; - - inline void init (void) - { - HMODULE hinstLib; - this->ScriptItemizeOpenType = NULL; - this->ScriptShapeOpenType = NULL; - this->ScriptPlaceOpenType = NULL; - - hinstLib = GetModuleHandle (TEXT ("usp10.dll")); - if (hinstLib) - { - this->ScriptItemizeOpenType = (SIOT) GetProcAddress (hinstLib, "ScriptItemizeOpenType"); - this->ScriptShapeOpenType = (SSOT) GetProcAddress (hinstLib, "ScriptShapeOpenType"); - this->ScriptPlaceOpenType = (SPOT) GetProcAddress (hinstLib, "ScriptPlaceOpenType"); - } - if (!this->ScriptItemizeOpenType || - !this->ScriptShapeOpenType || - !this->ScriptPlaceOpenType) - { - DEBUG_MSG (UNISCRIBE, NULL, "OpenType versions of functions not found; falling back."); - this->ScriptItemizeOpenType = hb_ScriptItemizeOpenType; - this->ScriptShapeOpenType = hb_ScriptShapeOpenType; - this->ScriptPlaceOpenType = hb_ScriptPlaceOpenType; - } - } -}; -static hb_uniscribe_shaper_funcs_t *uniscribe_funcs; - -static inline void -free_uniscribe_funcs (void) -{ - free (uniscribe_funcs); -} - -static hb_uniscribe_shaper_funcs_t * -hb_uniscribe_shaper_get_funcs (void) -{ -retry: - hb_uniscribe_shaper_funcs_t *funcs = (hb_uniscribe_shaper_funcs_t *) hb_atomic_ptr_get (&uniscribe_funcs); - - if (unlikely (!funcs)) - { - funcs = (hb_uniscribe_shaper_funcs_t *) calloc (1, sizeof (hb_uniscribe_shaper_funcs_t)); - if (unlikely (!funcs)) - return NULL; - - funcs->init (); - - if (!hb_atomic_ptr_cmpexch (&uniscribe_funcs, NULL, funcs)) { - free (funcs); - goto retry; - } - -#ifdef HAVE_ATEXIT - atexit (free_uniscribe_funcs); /* First person registers atexit() callback. */ -#endif - } - - return funcs; -} - - -struct active_feature_t { - OPENTYPE_FEATURE_RECORD rec; - unsigned int order; - - static int cmp (const active_feature_t *a, const active_feature_t *b) { - return a->rec.tagFeature < b->rec.tagFeature ? -1 : a->rec.tagFeature > b->rec.tagFeature ? 1 : - a->order < b->order ? -1 : a->order > b->order ? 1 : - a->rec.lParameter < b->rec.lParameter ? -1 : a->rec.lParameter > b->rec.lParameter ? 1 : - 0; - } - bool operator== (const active_feature_t *f) { - return cmp (this, f) == 0; - } -}; - -struct feature_event_t { - unsigned int index; - bool start; - active_feature_t feature; - - static int cmp (const feature_event_t *a, const feature_event_t *b) { - return a->index < b->index ? -1 : a->index > b->index ? 1 : - a->start < b->start ? -1 : a->start > b->start ? 1 : - active_feature_t::cmp (&a->feature, &b->feature); - } -}; - -struct range_record_t { - TEXTRANGE_PROPERTIES props; - unsigned int index_first; /* == start */ - unsigned int index_last; /* == end - 1 */ -}; - -HB_SHAPER_DATA_ENSURE_DECLARE(uniscribe, face) -HB_SHAPER_DATA_ENSURE_DECLARE(uniscribe, font) - - -/* - * shaper face data - */ - -struct hb_uniscribe_shaper_face_data_t { - HANDLE fh; - hb_uniscribe_shaper_funcs_t *funcs; - wchar_t face_name[LF_FACESIZE]; -}; - -/* face_name should point to a wchar_t[LF_FACESIZE] object. */ -static void -_hb_generate_unique_face_name (wchar_t *face_name, unsigned int *plen) -{ - /* We'll create a private name for the font from a UUID using a simple, - * somewhat base64-like encoding scheme */ - const char *enc = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-"; - UUID id; - UuidCreate ((UUID*) &id); - unsigned int name_str_len = 0; - face_name[name_str_len++] = 'F'; - face_name[name_str_len++] = '_'; - unsigned char *p = (unsigned char *) &id; - for (unsigned int i = 0; i < 16; i += 2) - { - /* Spread the 16 bits from two bytes of the UUID across three chars of face_name, - * using the bits in groups of 5,5,6 to select chars from enc. - * This will generate 24 characters; with the 'F_' prefix we already provided, - * the name will be 26 chars (plus the NUL terminator), so will always fit within - * face_name (LF_FACESIZE = 32). */ - face_name[name_str_len++] = enc[p[i] >> 3]; - face_name[name_str_len++] = enc[((p[i] << 2) | (p[i + 1] >> 6)) & 0x1f]; - face_name[name_str_len++] = enc[p[i + 1] & 0x3f]; - } - face_name[name_str_len] = 0; - if (plen) - *plen = name_str_len; -} - -/* Destroys blob. */ -static hb_blob_t * -_hb_rename_font (hb_blob_t *blob, wchar_t *new_name) -{ - /* Create a copy of the font data, with the 'name' table replaced by a - * table that names the font with our private F_* name created above. - * For simplicity, we just append a new 'name' table and update the - * sfnt directory; the original table is left in place, but unused. - * - * The new table will contain just 5 name IDs: family, style, unique, - * full, PS. All of them point to the same name data with our unique name. - */ - - blob = OT::Sanitizer<OT::OpenTypeFontFile>::sanitize (blob); - - unsigned int length, new_length, name_str_len; - const char *orig_sfnt_data = hb_blob_get_data (blob, &length); - - _hb_generate_unique_face_name (new_name, &name_str_len); - - static const uint16_t name_IDs[] = { 1, 2, 3, 4, 6 }; - - unsigned int name_table_length = OT::name::min_size + - ARRAY_LENGTH (name_IDs) * OT::NameRecord::static_size + - name_str_len * 2; /* for name data in UTF16BE form */ - unsigned int name_table_offset = (length + 3) & ~3; - - new_length = name_table_offset + ((name_table_length + 3) & ~3); - void *new_sfnt_data = calloc (1, new_length); - if (!new_sfnt_data) - { - hb_blob_destroy (blob); - return NULL; - } - - memcpy(new_sfnt_data, orig_sfnt_data, length); - - OT::name &name = OT::StructAtOffset<OT::name> (new_sfnt_data, name_table_offset); - name.format.set (0); - name.count.set (ARRAY_LENGTH (name_IDs)); - name.stringOffset.set (name.get_size ()); - for (unsigned int i = 0; i < ARRAY_LENGTH (name_IDs); i++) - { - OT::NameRecord &record = name.nameRecord[i]; - record.platformID.set (3); - record.encodingID.set (1); - record.languageID.set (0x0409); /* English */ - record.nameID.set (name_IDs[i]); - record.length.set (name_str_len * 2); - record.offset.set (0); - } - - /* Copy string data from new_name, converting wchar_t to UTF16BE. */ - unsigned char *p = &OT::StructAfter<unsigned char> (name); - for (unsigned int i = 0; i < name_str_len; i++) - { - *p++ = new_name[i] >> 8; - *p++ = new_name[i] & 0xff; - } - - /* Adjust name table entry to point to new name table */ - const OT::OpenTypeFontFile &file = * (OT::OpenTypeFontFile *) (new_sfnt_data); - unsigned int face_count = file.get_face_count (); - for (unsigned int face_index = 0; face_index < face_count; face_index++) - { - /* Note: doing multiple edits (ie. TTC) can be unsafe. There may be - * toe-stepping. But we don't really care. */ - const OT::OpenTypeFontFace &face = file.get_face (face_index); - unsigned int index; - if (face.find_table_index (HB_OT_TAG_name, &index)) - { - OT::TableRecord &record = const_cast<OT::TableRecord &> (face.get_table (index)); - record.checkSum.set_for_data (&name, name_table_length); - record.offset.set (name_table_offset); - record.length.set (name_table_length); - } - else if (face_index == 0) /* Fail if first face doesn't have 'name' table. */ - { - free (new_sfnt_data); - hb_blob_destroy (blob); - return NULL; - } - } - - /* The checkSumAdjustment field in the 'head' table is now wrong, - * but that doesn't actually seem to cause any problems so we don't - * bother. */ - - hb_blob_destroy (blob); - return hb_blob_create ((const char *) new_sfnt_data, new_length, - HB_MEMORY_MODE_WRITABLE, NULL, free); -} - -hb_uniscribe_shaper_face_data_t * -_hb_uniscribe_shaper_face_data_create (hb_face_t *face) -{ - hb_uniscribe_shaper_face_data_t *data = (hb_uniscribe_shaper_face_data_t *) calloc (1, sizeof (hb_uniscribe_shaper_face_data_t)); - if (unlikely (!data)) - return NULL; - - data->funcs = hb_uniscribe_shaper_get_funcs (); - if (unlikely (!data->funcs)) - { - free (data); - return NULL; - } - - hb_blob_t *blob = hb_face_reference_blob (face); - if (unlikely (!hb_blob_get_length (blob))) - DEBUG_MSG (UNISCRIBE, face, "Face has empty blob"); - - blob = _hb_rename_font (blob, data->face_name); - if (unlikely (!blob)) - { - free (data); - return NULL; - } - - DWORD num_fonts_installed; - data->fh = AddFontMemResourceEx ((void *) hb_blob_get_data (blob, NULL), - hb_blob_get_length (blob), - 0, &num_fonts_installed); - if (unlikely (!data->fh)) - { - DEBUG_MSG (UNISCRIBE, face, "Face AddFontMemResourceEx() failed"); - free (data); - return NULL; - } - - return data; -} - -void -_hb_uniscribe_shaper_face_data_destroy (hb_uniscribe_shaper_face_data_t *data) -{ - RemoveFontMemResourceEx (data->fh); - free (data); -} - - -/* - * shaper font data - */ - -struct hb_uniscribe_shaper_font_data_t { - HDC hdc; - LOGFONTW log_font; - HFONT hfont; - SCRIPT_CACHE script_cache; -}; - -static bool -populate_log_font (LOGFONTW *lf, - hb_font_t *font) -{ - memset (lf, 0, sizeof (*lf)); - lf->lfHeight = -font->y_scale; - lf->lfCharSet = DEFAULT_CHARSET; - - hb_face_t *face = font->face; - hb_uniscribe_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face); - - memcpy (lf->lfFaceName, face_data->face_name, sizeof (lf->lfFaceName)); - - return true; -} - -hb_uniscribe_shaper_font_data_t * -_hb_uniscribe_shaper_font_data_create (hb_font_t *font) -{ - if (unlikely (!hb_uniscribe_shaper_face_data_ensure (font->face))) return NULL; - - hb_uniscribe_shaper_font_data_t *data = (hb_uniscribe_shaper_font_data_t *) calloc (1, sizeof (hb_uniscribe_shaper_font_data_t)); - if (unlikely (!data)) - return NULL; - - data->hdc = GetDC (NULL); - - if (unlikely (!populate_log_font (&data->log_font, font))) { - DEBUG_MSG (UNISCRIBE, font, "Font populate_log_font() failed"); - _hb_uniscribe_shaper_font_data_destroy (data); - return NULL; - } - - data->hfont = CreateFontIndirectW (&data->log_font); - if (unlikely (!data->hfont)) { - DEBUG_MSG (UNISCRIBE, font, "Font CreateFontIndirectW() failed"); - _hb_uniscribe_shaper_font_data_destroy (data); - return NULL; - } - - if (!SelectObject (data->hdc, data->hfont)) { - DEBUG_MSG (UNISCRIBE, font, "Font SelectObject() failed"); - _hb_uniscribe_shaper_font_data_destroy (data); - return NULL; - } - - return data; -} - -void -_hb_uniscribe_shaper_font_data_destroy (hb_uniscribe_shaper_font_data_t *data) -{ - if (data->hdc) - ReleaseDC (NULL, data->hdc); - if (data->hfont) - DeleteObject (data->hfont); - if (data->script_cache) - ScriptFreeCache (&data->script_cache); - free (data); -} - -LOGFONTW * -hb_uniscribe_font_get_logfontw (hb_font_t *font) -{ - if (unlikely (!hb_uniscribe_shaper_font_data_ensure (font))) return NULL; - hb_uniscribe_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font); - return &font_data->log_font; -} - -HFONT -hb_uniscribe_font_get_hfont (hb_font_t *font) -{ - if (unlikely (!hb_uniscribe_shaper_font_data_ensure (font))) return NULL; - hb_uniscribe_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font); - return font_data->hfont; -} - - -/* - * shaper shape_plan data - */ - -struct hb_uniscribe_shaper_shape_plan_data_t {}; - -hb_uniscribe_shaper_shape_plan_data_t * -_hb_uniscribe_shaper_shape_plan_data_create (hb_shape_plan_t *shape_plan HB_UNUSED, - const hb_feature_t *user_features HB_UNUSED, - unsigned int num_user_features HB_UNUSED) -{ - return (hb_uniscribe_shaper_shape_plan_data_t *) HB_SHAPER_DATA_SUCCEEDED; -} - -void -_hb_uniscribe_shaper_shape_plan_data_destroy (hb_uniscribe_shaper_shape_plan_data_t *data HB_UNUSED) -{ -} - - -/* - * shaper - */ - - -hb_bool_t -_hb_uniscribe_shape (hb_shape_plan_t *shape_plan, - hb_font_t *font, - hb_buffer_t *buffer, - const hb_feature_t *features, - unsigned int num_features) -{ - hb_face_t *face = font->face; - hb_uniscribe_shaper_face_data_t *face_data = HB_SHAPER_DATA_GET (face); - hb_uniscribe_shaper_font_data_t *font_data = HB_SHAPER_DATA_GET (font); - hb_uniscribe_shaper_funcs_t *funcs = face_data->funcs; - - /* - * Set up features. - */ - hb_auto_array_t<OPENTYPE_FEATURE_RECORD> feature_records; - hb_auto_array_t<range_record_t> range_records; - if (num_features) - { - /* Sort features by start/end events. */ - hb_auto_array_t<feature_event_t> feature_events; - for (unsigned int i = 0; i < num_features; i++) - { - active_feature_t feature; - feature.rec.tagFeature = hb_uint32_swap (features[i].tag); - feature.rec.lParameter = features[i].value; - feature.order = i; - - feature_event_t *event; - - event = feature_events.push (); - if (unlikely (!event)) - goto fail_features; - event->index = features[i].start; - event->start = true; - event->feature = feature; - - event = feature_events.push (); - if (unlikely (!event)) - goto fail_features; - event->index = features[i].end; - event->start = false; - event->feature = feature; - } - feature_events.sort (); - /* Add a strategic final event. */ - { - active_feature_t feature; - feature.rec.tagFeature = 0; - feature.rec.lParameter = 0; - feature.order = num_features + 1; - - feature_event_t *event = feature_events.push (); - if (unlikely (!event)) - goto fail_features; - event->index = 0; /* This value does magic. */ - event->start = false; - event->feature = feature; - } - - /* Scan events and save features for each range. */ - hb_auto_array_t<active_feature_t> active_features; - unsigned int last_index = 0; - for (unsigned int i = 0; i < feature_events.len; i++) - { - feature_event_t *event = &feature_events[i]; - - if (event->index != last_index) - { - /* Save a snapshot of active features and the range. */ - range_record_t *range = range_records.push (); - if (unlikely (!range)) - goto fail_features; - - unsigned int offset = feature_records.len; - - active_features.sort (); - for (unsigned int j = 0; j < active_features.len; j++) - { - if (!j || active_features[j].rec.tagFeature != feature_records[feature_records.len - 1].tagFeature) - { - OPENTYPE_FEATURE_RECORD *feature = feature_records.push (); - if (unlikely (!feature)) - goto fail_features; - *feature = active_features[j].rec; - } - else - { - /* Overrides value for existing feature. */ - feature_records[feature_records.len - 1].lParameter = active_features[j].rec.lParameter; - } - } - - /* Will convert to pointer after all is ready, since feature_records.array - * may move as we grow it. */ - range->props.potfRecords = reinterpret_cast<OPENTYPE_FEATURE_RECORD *> (offset); - range->props.cotfRecords = feature_records.len - offset; - range->index_first = last_index; - range->index_last = event->index - 1; - - last_index = event->index; - } - - if (event->start) { - active_feature_t *feature = active_features.push (); - if (unlikely (!feature)) - goto fail_features; - *feature = event->feature; - } else { - active_feature_t *feature = active_features.find (&event->feature); - if (feature) - active_features.remove (feature - active_features.array); - } - } - - if (!range_records.len) /* No active feature found. */ - goto fail_features; - - /* Fixup the pointers. */ - for (unsigned int i = 0; i < range_records.len; i++) - { - range_record_t *range = &range_records[i]; - range->props.potfRecords = feature_records.array + reinterpret_cast<unsigned int> (range->props.potfRecords); - } - } - else - { - fail_features: - num_features = 0; - } - -#define FAIL(...) \ - HB_STMT_START { \ - DEBUG_MSG (UNISCRIBE, NULL, __VA_ARGS__); \ - return false; \ - } HB_STMT_END; - - HRESULT hr; - -retry: - - unsigned int scratch_size; - char *scratch = (char *) buffer->get_scratch_buffer (&scratch_size); - - /* Allocate char buffers; they all fit */ - -#define ALLOCATE_ARRAY(Type, name, len) \ - Type *name = (Type *) scratch; \ - scratch += (len) * sizeof ((name)[0]); \ - scratch_size -= (len) * sizeof ((name)[0]); - -#define utf16_index() var1.u32 - - WCHAR *pchars = (WCHAR *) scratch; - unsigned int chars_len = 0; - for (unsigned int i = 0; i < buffer->len; i++) - { - hb_codepoint_t c = buffer->info[i].codepoint; - buffer->info[i].utf16_index() = chars_len; - if (likely (c < 0x10000)) - pchars[chars_len++] = c; - else if (unlikely (c >= 0x110000)) - pchars[chars_len++] = 0xFFFD; - else { - pchars[chars_len++] = 0xD800 + ((c - 0x10000) >> 10); - pchars[chars_len++] = 0xDC00 + ((c - 0x10000) & ((1 << 10) - 1)); - } - } - - ALLOCATE_ARRAY (WCHAR, wchars, chars_len); - ALLOCATE_ARRAY (WORD, log_clusters, chars_len); - ALLOCATE_ARRAY (SCRIPT_CHARPROP, char_props, chars_len); - - if (num_features) - { - /* Need log_clusters to assign features. */ - chars_len = 0; - for (unsigned int i = 0; i < buffer->len; i++) - { - hb_codepoint_t c = buffer->info[i].codepoint; - unsigned int cluster = buffer->info[i].cluster; - log_clusters[chars_len++] = cluster; - if (c >= 0x10000 && c < 0x110000) - log_clusters[chars_len++] = cluster; /* Surrogates. */ - } - } - - /* On Windows, we don't care about alignment...*/ - unsigned int glyphs_size = scratch_size / (sizeof (WORD) + - sizeof (SCRIPT_GLYPHPROP) + - sizeof (int) + - sizeof (GOFFSET) + - sizeof (uint32_t)); - - ALLOCATE_ARRAY (WORD, glyphs, glyphs_size); - ALLOCATE_ARRAY (SCRIPT_GLYPHPROP, glyph_props, glyphs_size); - ALLOCATE_ARRAY (int, advances, glyphs_size); - ALLOCATE_ARRAY (GOFFSET, offsets, glyphs_size); - ALLOCATE_ARRAY (uint32_t, vis_clusters, glyphs_size); - - /* Note: - * We can't touch the contents of glyph_props. Our fallback - * implementations of Shape and Place functions use that buffer - * by casting it to a different type. It works because they - * both agree about it, but if we want to access it here we - * need address that issue first. - */ - -#undef ALLOCATE_ARRAY - -#define MAX_ITEMS 256 - - SCRIPT_ITEM items[MAX_ITEMS + 1]; - SCRIPT_CONTROL bidi_control = {0}; - SCRIPT_STATE bidi_state = {0}; - ULONG script_tags[MAX_ITEMS]; - int item_count; - - /* MinGW32 doesn't define fMergeNeutralItems, so we bruteforce */ - //bidi_control.fMergeNeutralItems = true; - *(uint32_t*)&bidi_control |= 1<<24; - - bidi_state.uBidiLevel = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1; - bidi_state.fOverrideDirection = 1; - - hr = funcs->ScriptItemizeOpenType (wchars, - chars_len, - MAX_ITEMS, - &bidi_control, - &bidi_state, - items, - script_tags, - &item_count); - if (unlikely (FAILED (hr))) - FAIL ("ScriptItemizeOpenType() failed: 0x%08xL", hr); - -#undef MAX_ITEMS - - OPENTYPE_TAG language_tag = hb_uint32_swap (hb_ot_tag_from_language (buffer->props.language)); - hb_auto_array_t<TEXTRANGE_PROPERTIES*> range_properties; - hb_auto_array_t<int> range_char_counts; - - unsigned int glyphs_offset = 0; - unsigned int glyphs_len; - bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction); - for (unsigned int i = 0; i < item_count; i++) - { - unsigned int chars_offset = items[i].iCharPos; - unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset; - - if (num_features) - { - range_properties.shrink (0); - range_char_counts.shrink (0); - - range_record_t *last_range = &range_records[0]; - - for (unsigned int k = chars_offset; k < chars_offset + item_chars_len; k++) - { - range_record_t *range = last_range; - while (log_clusters[k] < range->index_first) - range--; - while (log_clusters[k] > range->index_last) - range++; - if (!range_properties.len || - &range->props != range_properties[range_properties.len - 1]) - { - TEXTRANGE_PROPERTIES **props = range_properties.push (); - int *c = range_char_counts.push (); - if (unlikely (!props || !c)) - { - range_properties.shrink (0); - range_char_counts.shrink (0); - break; - } - *props = &range->props; - *c = 1; - } - else - { - range_char_counts[range_char_counts.len - 1]++; - } - - last_range = range; - } - } - - /* Asking for glyphs in logical order circumvents at least - * one bug in Uniscribe. */ - items[i].a.fLogicalOrder = true; - - retry_shape: - hr = funcs->ScriptShapeOpenType (font_data->hdc, - &font_data->script_cache, - &items[i].a, - script_tags[i], - language_tag, - range_char_counts.array, - range_properties.array, - range_properties.len, - wchars + chars_offset, - item_chars_len, - glyphs_size - glyphs_offset, - /* out */ - log_clusters + chars_offset, - char_props + chars_offset, - glyphs + glyphs_offset, - glyph_props + glyphs_offset, - (int *) &glyphs_len); - - if (unlikely (items[i].a.fNoGlyphIndex)) - FAIL ("ScriptShapeOpenType() set fNoGlyphIndex"); - if (unlikely (hr == E_OUTOFMEMORY)) - { - buffer->ensure (buffer->allocated * 2); - if (buffer->in_error) - FAIL ("Buffer resize failed"); - goto retry; - } - if (unlikely (hr == USP_E_SCRIPT_NOT_IN_FONT)) - { - if (items[i].a.eScript == SCRIPT_UNDEFINED) - FAIL ("ScriptShapeOpenType() failed: Font doesn't support script"); - items[i].a.eScript = SCRIPT_UNDEFINED; - goto retry_shape; - } - if (unlikely (FAILED (hr))) - { - FAIL ("ScriptShapeOpenType() failed: 0x%08xL", hr); - } - - for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++) - log_clusters[j] += glyphs_offset; - - hr = funcs->ScriptPlaceOpenType (font_data->hdc, - &font_data->script_cache, - &items[i].a, - script_tags[i], - language_tag, - range_char_counts.array, - range_properties.array, - range_properties.len, - wchars + chars_offset, - log_clusters + chars_offset, - char_props + chars_offset, - item_chars_len, - glyphs + glyphs_offset, - glyph_props + glyphs_offset, - glyphs_len, - /* out */ - advances + glyphs_offset, - offsets + glyphs_offset, - NULL); - if (unlikely (FAILED (hr))) - FAIL ("ScriptPlaceOpenType() failed: 0x%08xL", hr); - - if (DEBUG_ENABLED (UNISCRIBE)) - fprintf (stderr, "Item %d RTL %d LayoutRTL %d LogicalOrder %d ScriptTag %c%c%c%c\n", - i, - items[i].a.fRTL, - items[i].a.fLayoutRTL, - items[i].a.fLogicalOrder, - HB_UNTAG (hb_uint32_swap (script_tags[i]))); - - glyphs_offset += glyphs_len; - } - glyphs_len = glyphs_offset; - - /* Ok, we've got everything we need, now compose output buffer, - * very, *very*, carefully! */ - - /* Calculate visual-clusters. That's what we ship. */ - for (unsigned int i = 0; i < glyphs_len; i++) - vis_clusters[i] = -1; - for (unsigned int i = 0; i < buffer->len; i++) { - uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]]; - *p = MIN (*p, buffer->info[i].cluster); - } - for (unsigned int i = 1; i < glyphs_len; i++) - if (vis_clusters[i] == -1) - vis_clusters[i] = vis_clusters[i - 1]; - -#undef utf16_index - - buffer->ensure (glyphs_len); - if (buffer->in_error) - FAIL ("Buffer in error"); - -#undef FAIL - - /* Set glyph infos */ - buffer->len = 0; - for (unsigned int i = 0; i < glyphs_len; i++) - { - hb_glyph_info_t *info = &buffer->info[buffer->len++]; - - info->codepoint = glyphs[i]; - info->cluster = vis_clusters[i]; - - /* The rest is crap. Let's store position info there for now. */ - info->mask = advances[i]; - info->var1.u32 = offsets[i].du; - info->var2.u32 = offsets[i].dv; - } - - /* Set glyph positions */ - buffer->clear_positions (); - for (unsigned int i = 0; i < glyphs_len; i++) - { - hb_glyph_info_t *info = &buffer->info[i]; - hb_glyph_position_t *pos = &buffer->pos[i]; - - /* TODO vertical */ - pos->x_advance = info->mask; - pos->x_offset = backward ? -info->var1.u32 : info->var1.u32; - pos->y_offset = info->var2.u32; - } - - if (backward) - hb_buffer_reverse (buffer); - - /* Wow, done! */ - return true; -} - - |