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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-uniscribe.cc1015
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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;
-}
-
-