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Sweden-Number/dlls/dwrite/opentype.c

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/*
* Methods for dealing with opentype font tables
*
* Copyright 2014 Aric Stewart 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
*/
#define COBJMACROS
#include "dwrite_private.h"
#include "winternl.h"
WINE_DEFAULT_DEBUG_CHANNEL(dwrite);
#define MS_HEAD_TAG DWRITE_MAKE_OPENTYPE_TAG('h','e','a','d')
#define MS_HHEA_TAG DWRITE_MAKE_OPENTYPE_TAG('h','h','e','a')
#define MS_OTTO_TAG DWRITE_MAKE_OPENTYPE_TAG('O','T','T','O')
#define MS_OS2_TAG DWRITE_MAKE_OPENTYPE_TAG('O','S','/','2')
#define MS_POST_TAG DWRITE_MAKE_OPENTYPE_TAG('p','o','s','t')
#define MS_TTCF_TAG DWRITE_MAKE_OPENTYPE_TAG('t','t','c','f')
#define MS_GPOS_TAG DWRITE_MAKE_OPENTYPE_TAG('G','P','O','S')
#define MS_GSUB_TAG DWRITE_MAKE_OPENTYPE_TAG('G','S','U','B')
#ifdef WORDS_BIGENDIAN
#define GET_BE_WORD(x) (x)
#define GET_BE_DWORD(x) (x)
#else
#define GET_BE_WORD(x) RtlUshortByteSwap(x)
#define GET_BE_DWORD(x) RtlUlongByteSwap(x)
#endif
typedef struct {
CHAR TTCTag[4];
DWORD Version;
DWORD numFonts;
DWORD OffsetTable[1];
} TTC_Header_V1;
typedef struct {
DWORD version;
WORD numTables;
WORD searchRange;
WORD entrySelector;
WORD rangeShift;
} TTC_SFNT_V1;
typedef struct {
CHAR tag[4];
DWORD checkSum;
DWORD offset;
DWORD length;
} TT_TableRecord;
typedef struct {
WORD platformID;
WORD encodingID;
DWORD offset;
} CMAP_EncodingRecord;
typedef struct {
WORD version;
WORD numTables;
CMAP_EncodingRecord tables[1];
} CMAP_Header;
typedef struct {
DWORD startCharCode;
DWORD endCharCode;
DWORD startGlyphID;
} CMAP_SegmentedCoverage_group;
typedef struct {
WORD format;
WORD reserved;
DWORD length;
DWORD language;
DWORD nGroups;
CMAP_SegmentedCoverage_group groups[1];
} CMAP_SegmentedCoverage;
typedef struct {
WORD format;
WORD length;
WORD language;
WORD segCountX2;
WORD searchRange;
WORD entrySelector;
WORD rangeShift;
WORD endCode[1];
} CMAP_SegmentMapping_0;
enum OPENTYPE_CMAP_TABLE_FORMAT
{
OPENTYPE_CMAP_TABLE_SEGMENT_MAPPING = 4,
OPENTYPE_CMAP_TABLE_SEGMENTED_COVERAGE = 12
};
/* PANOSE is 10 bytes in size, need to pack the structure properly */
#include "pshpack2.h"
typedef struct
{
ULONG version;
ULONG revision;
ULONG checksumadj;
ULONG magic;
USHORT flags;
USHORT unitsPerEm;
ULONGLONG created;
ULONGLONG modified;
SHORT xMin;
SHORT yMin;
SHORT xMax;
SHORT yMax;
USHORT macStyle;
USHORT lowestRecPPEM;
SHORT direction_hint;
SHORT index_format;
SHORT glyphdata_format;
} TT_HEAD;
enum TT_HEAD_MACSTYLE
{
TT_HEAD_MACSTYLE_BOLD = 1 << 0,
TT_HEAD_MACSTYLE_ITALIC = 1 << 1,
};
typedef struct
{
ULONG Version;
ULONG italicAngle;
SHORT underlinePosition;
SHORT underlineThickness;
ULONG fixed_pitch;
ULONG minmemType42;
ULONG maxmemType42;
ULONG minmemType1;
ULONG maxmemType1;
} TT_POST;
typedef struct
{
USHORT version;
SHORT xAvgCharWidth;
USHORT usWeightClass;
USHORT usWidthClass;
SHORT fsType;
SHORT ySubscriptXSize;
SHORT ySubscriptYSize;
SHORT ySubscriptXOffset;
SHORT ySubscriptYOffset;
SHORT ySuperscriptXSize;
SHORT ySuperscriptYSize;
SHORT ySuperscriptXOffset;
SHORT ySuperscriptYOffset;
SHORT yStrikeoutSize;
SHORT yStrikeoutPosition;
SHORT sFamilyClass;
PANOSE panose;
ULONG ulUnicodeRange1;
ULONG ulUnicodeRange2;
ULONG ulUnicodeRange3;
ULONG ulUnicodeRange4;
CHAR achVendID[4];
USHORT fsSelection;
USHORT usFirstCharIndex;
USHORT usLastCharIndex;
/* According to the Apple spec, original version didn't have the below fields,
* version numbers were taken from the OpenType spec.
*/
/* version 0 (TrueType 1.5) */
USHORT sTypoAscender;
USHORT sTypoDescender;
USHORT sTypoLineGap;
USHORT usWinAscent;
USHORT usWinDescent;
/* version 1 (TrueType 1.66) */
ULONG ulCodePageRange1;
ULONG ulCodePageRange2;
/* version 2 (OpenType 1.2) */
SHORT sxHeight;
SHORT sCapHeight;
USHORT usDefaultChar;
USHORT usBreakChar;
USHORT usMaxContext;
} TT_OS2_V2;
typedef struct {
ULONG version;
SHORT ascender;
SHORT descender;
SHORT linegap;
USHORT advanceWidthMax;
SHORT minLeftSideBearing;
SHORT minRightSideBearing;
SHORT xMaxExtent;
SHORT caretSlopeRise;
SHORT caretSlopeRun;
SHORT caretOffset;
SHORT reserved[4];
SHORT metricDataFormat;
USHORT numberOfHMetrics;
} TT_HHEA;
#include "poppack.h"
enum OS2_FSSELECTION {
OS2_FSSELECTION_ITALIC = 1 << 0,
OS2_FSSELECTION_UNDERSCORE = 1 << 1,
OS2_FSSELECTION_NEGATIVE = 1 << 2,
OS2_FSSELECTION_OUTLINED = 1 << 3,
OS2_FSSELECTION_STRIKEOUT = 1 << 4,
OS2_FSSELECTION_BOLD = 1 << 5,
OS2_FSSELECTION_REGULAR = 1 << 6,
OS2_FSSELECTION_USE_TYPO_METRICS = 1 << 7,
OS2_FSSELECTION_WWS = 1 << 8,
OS2_FSSELECTION_OBLIQUE = 1 << 9
};
typedef struct {
WORD platformID;
WORD encodingID;
WORD languageID;
WORD nameID;
WORD length;
WORD offset;
} TT_NameRecord;
typedef struct {
WORD format;
WORD count;
WORD stringOffset;
TT_NameRecord nameRecord[1];
} TT_NAME_V0;
struct VDMX_Header
{
WORD version;
WORD numRecs;
WORD numRatios;
};
struct VDMX_Ratio
{
BYTE bCharSet;
BYTE xRatio;
BYTE yStartRatio;
BYTE yEndRatio;
};
struct VDMX_group
{
WORD recs;
BYTE startsz;
BYTE endsz;
};
struct VDMX_vTable
{
WORD yPelHeight;
SHORT yMax;
SHORT yMin;
};
typedef struct {
CHAR FeatureTag[4];
WORD Feature;
} OT_FeatureRecord;
typedef struct {
WORD FeatureCount;
OT_FeatureRecord FeatureRecord[1];
} OT_FeatureList;
typedef struct {
WORD LookupOrder; /* Reserved */
WORD ReqFeatureIndex;
WORD FeatureCount;
WORD FeatureIndex[1];
} OT_LangSys;
typedef struct {
CHAR LangSysTag[4];
WORD LangSys;
} OT_LangSysRecord;
typedef struct {
WORD DefaultLangSys;
WORD LangSysCount;
OT_LangSysRecord LangSysRecord[1];
} OT_Script;
typedef struct {
CHAR ScriptTag[4];
WORD Script;
} OT_ScriptRecord;
typedef struct {
WORD ScriptCount;
OT_ScriptRecord ScriptRecord[1];
} OT_ScriptList;
typedef struct {
DWORD version;
WORD ScriptList;
WORD FeatureList;
WORD LookupList;
} GPOS_GSUB_Header;
enum OPENTYPE_PLATFORM_ID
{
OPENTYPE_PLATFORM_UNICODE = 0,
OPENTYPE_PLATFORM_MAC,
OPENTYPE_PLATFORM_ISO,
OPENTYPE_PLATFORM_WIN,
OPENTYPE_PLATFORM_CUSTOM
};
enum TT_NAME_WINDOWS_ENCODING_ID
{
TT_NAME_WINDOWS_ENCODING_SYMBOL = 0,
TT_NAME_WINDOWS_ENCODING_UCS2,
TT_NAME_WINDOWS_ENCODING_SJIS,
TT_NAME_WINDOWS_ENCODING_PRC,
TT_NAME_WINDOWS_ENCODING_BIG5,
TT_NAME_WINDOWS_ENCODING_WANSUNG,
TT_NAME_WINDOWS_ENCODING_JOHAB,
TT_NAME_WINDOWS_ENCODING_RESERVED1,
TT_NAME_WINDOWS_ENCODING_RESERVED2,
TT_NAME_WINDOWS_ENCODING_RESERVED3,
TT_NAME_WINDOWS_ENCODING_UCS4
};
enum TT_NAME_MAC_ENCODING_ID
{
TT_NAME_MAC_ENCODING_ROMAN = 0,
TT_NAME_MAC_ENCODING_JAPANESE,
TT_NAME_MAC_ENCODING_TRAD_CHINESE,
TT_NAME_MAC_ENCODING_KOREAN,
TT_NAME_MAC_ENCODING_ARABIC,
TT_NAME_MAC_ENCODING_HEBREW,
TT_NAME_MAC_ENCODING_GREEK,
TT_NAME_MAC_ENCODING_RUSSIAN,
TT_NAME_MAC_ENCODING_RSYMBOL,
TT_NAME_MAC_ENCODING_DEVANAGARI,
TT_NAME_MAC_ENCODING_GURMUKHI,
TT_NAME_MAC_ENCODING_GUJARATI,
TT_NAME_MAC_ENCODING_ORIYA,
TT_NAME_MAC_ENCODING_BENGALI,
TT_NAME_MAC_ENCODING_TAMIL,
TT_NAME_MAC_ENCODING_TELUGU,
TT_NAME_MAC_ENCODING_KANNADA,
TT_NAME_MAC_ENCODING_MALAYALAM,
TT_NAME_MAC_ENCODING_SINHALESE,
TT_NAME_MAC_ENCODING_BURMESE,
TT_NAME_MAC_ENCODING_KHMER,
TT_NAME_MAC_ENCODING_THAI,
TT_NAME_MAC_ENCODING_LAOTIAN,
TT_NAME_MAC_ENCODING_GEORGIAN,
TT_NAME_MAC_ENCODING_ARMENIAN,
TT_NAME_MAC_ENCODING_SIMPL_CHINESE,
TT_NAME_MAC_ENCODING_TIBETAN,
TT_NAME_MAC_ENCODING_MONGOLIAN,
TT_NAME_MAC_ENCODING_GEEZ,
TT_NAME_MAC_ENCODING_SLAVIC,
TT_NAME_MAC_ENCODING_VIETNAMESE,
TT_NAME_MAC_ENCODING_SINDHI,
TT_NAME_MAC_ENCODING_UNINTERPRETED
};
enum TT_NAME_MAC_LANGUAGE_ID
{
TT_NAME_MAC_LANGID_ENGLISH = 0,
TT_NAME_MAC_LANGID_FRENCH,
TT_NAME_MAC_LANGID_GERMAN,
TT_NAME_MAC_LANGID_ITALIAN,
TT_NAME_MAC_LANGID_DUTCH,
TT_NAME_MAC_LANGID_SWEDISH,
TT_NAME_MAC_LANGID_SPANISH,
TT_NAME_MAC_LANGID_DANISH,
TT_NAME_MAC_LANGID_PORTUGUESE,
TT_NAME_MAC_LANGID_NORWEGIAN,
TT_NAME_MAC_LANGID_HEBREW,
TT_NAME_MAC_LANGID_JAPANESE,
TT_NAME_MAC_LANGID_ARABIC,
TT_NAME_MAC_LANGID_FINNISH,
TT_NAME_MAC_LANGID_GREEK,
TT_NAME_MAC_LANGID_ICELANDIC,
TT_NAME_MAC_LANGID_MALTESE,
TT_NAME_MAC_LANGID_TURKISH,
TT_NAME_MAC_LANGID_CROATIAN,
TT_NAME_MAC_LANGID_TRAD_CHINESE,
TT_NAME_MAC_LANGID_URDU,
TT_NAME_MAC_LANGID_HINDI,
TT_NAME_MAC_LANGID_THAI,
TT_NAME_MAC_LANGID_KOREAN,
TT_NAME_MAC_LANGID_LITHUANIAN,
TT_NAME_MAC_LANGID_POLISH,
TT_NAME_MAC_LANGID_HUNGARIAN,
TT_NAME_MAC_LANGID_ESTONIAN,
TT_NAME_MAC_LANGID_LATVIAN,
TT_NAME_MAC_LANGID_SAMI,
TT_NAME_MAC_LANGID_FAROESE,
TT_NAME_MAC_LANGID_FARSI,
TT_NAME_MAC_LANGID_RUSSIAN,
TT_NAME_MAC_LANGID_SIMPL_CHINESE,
TT_NAME_MAC_LANGID_FLEMISH,
TT_NAME_MAC_LANGID_GAELIC,
TT_NAME_MAC_LANGID_ALBANIAN,
TT_NAME_MAC_LANGID_ROMANIAN,
TT_NAME_MAC_LANGID_CZECH,
TT_NAME_MAC_LANGID_SLOVAK,
TT_NAME_MAC_LANGID_SLOVENIAN,
TT_NAME_MAC_LANGID_YIDDISH,
TT_NAME_MAC_LANGID_SERBIAN,
TT_NAME_MAC_LANGID_MACEDONIAN,
TT_NAME_MAC_LANGID_BULGARIAN,
TT_NAME_MAC_LANGID_UKRAINIAN,
TT_NAME_MAC_LANGID_BYELORUSSIAN,
TT_NAME_MAC_LANGID_UZBEK,
TT_NAME_MAC_LANGID_KAZAKH,
TT_NAME_MAC_LANGID_AZERB_CYR,
TT_NAME_MAC_LANGID_AZERB_ARABIC,
TT_NAME_MAC_LANGID_ARMENIAN,
TT_NAME_MAC_LANGID_GEORGIAN,
TT_NAME_MAC_LANGID_MOLDAVIAN,
TT_NAME_MAC_LANGID_KIRGHIZ,
TT_NAME_MAC_LANGID_TAJIKI,
TT_NAME_MAC_LANGID_TURKMEN,
TT_NAME_MAC_LANGID_MONGOLIAN,
TT_NAME_MAC_LANGID_MONGOLIAN_CYR,
TT_NAME_MAC_LANGID_PASHTO,
TT_NAME_MAC_LANGID_KURDISH,
TT_NAME_MAC_LANGID_KASHMIRI,
TT_NAME_MAC_LANGID_SINDHI,
TT_NAME_MAC_LANGID_TIBETAN,
TT_NAME_MAC_LANGID_NEPALI,
TT_NAME_MAC_LANGID_SANSKRIT,
TT_NAME_MAC_LANGID_MARATHI,
TT_NAME_MAC_LANGID_BENGALI,
TT_NAME_MAC_LANGID_ASSAMESE,
TT_NAME_MAC_LANGID_GUJARATI,
TT_NAME_MAC_LANGID_PUNJABI,
TT_NAME_MAC_LANGID_ORIYA,
TT_NAME_MAC_LANGID_MALAYALAM,
TT_NAME_MAC_LANGID_KANNADA,
TT_NAME_MAC_LANGID_TAMIL,
TT_NAME_MAC_LANGID_TELUGU,
TT_NAME_MAC_LANGID_SINHALESE,
TT_NAME_MAC_LANGID_BURMESE,
TT_NAME_MAC_LANGID_KHMER,
TT_NAME_MAC_LANGID_LAO,
TT_NAME_MAC_LANGID_VIETNAMESE,
TT_NAME_MAC_LANGID_INDONESIAN,
TT_NAME_MAC_LANGID_TAGALONG,
TT_NAME_MAC_LANGID_MALAY_ROMAN,
TT_NAME_MAC_LANGID_MALAY_ARABIC,
TT_NAME_MAC_LANGID_AMHARIC,
TT_NAME_MAC_LANGID_TIGRINYA,
TT_NAME_MAC_LANGID_GALLA,
TT_NAME_MAC_LANGID_SOMALI,
TT_NAME_MAC_LANGID_SWAHILI,
TT_NAME_MAC_LANGID_KINYARWANDA,
TT_NAME_MAC_LANGID_RUNDI,
TT_NAME_MAC_LANGID_NYANJA,
TT_NAME_MAC_LANGID_MALAGASY,
TT_NAME_MAC_LANGID_ESPERANTO,
TT_NAME_MAC_LANGID_WELSH,
TT_NAME_MAC_LANGID_BASQUE,
TT_NAME_MAC_LANGID_CATALAN,
TT_NAME_MAC_LANGID_LATIN,
TT_NAME_MAC_LANGID_QUENCHUA,
TT_NAME_MAC_LANGID_GUARANI,
TT_NAME_MAC_LANGID_AYMARA,
TT_NAME_MAC_LANGID_TATAR,
TT_NAME_MAC_LANGID_UIGHUR,
TT_NAME_MAC_LANGID_DZONGKHA,
TT_NAME_MAC_LANGID_JAVANESE,
TT_NAME_MAC_LANGID_SUNDANESE,
TT_NAME_MAC_LANGID_GALICIAN,
TT_NAME_MAC_LANGID_AFRIKAANS,
TT_NAME_MAC_LANGID_BRETON,
TT_NAME_MAC_LANGID_INUKTITUT,
TT_NAME_MAC_LANGID_SCOTTISH_GAELIC,
TT_NAME_MAC_LANGID_MANX_GAELIC,
TT_NAME_MAC_LANGID_IRISH_GAELIC,
TT_NAME_MAC_LANGID_TONGAN,
TT_NAME_MAC_LANGID_GREEK_POLYTONIC,
TT_NAME_MAC_LANGID_GREENLANDIC,
TT_NAME_MAC_LANGID_AZER_ROMAN
};
/* Names are indexed with TT_NAME_MAC_LANGUAGE_ID values */
static const char name_mac_langid_to_locale[][10] = {
"en-US",
"fr-FR",
"de-DE",
"it-IT",
"nl-NL",
"sv-SE",
"es-ES",
"da-DA",
"pt-PT",
"no-NO",
"he-IL",
"ja-JP",
"ar-AR",
"fi-FI",
"el-GR",
"is-IS",
"mt-MT",
"tr-TR",
"hr-HR",
"zh-HK",
"ur-PK",
"hi-IN",
"th-TH",
"ko-KR",
"lt-LT",
"pl-PL",
"hu-HU",
"et-EE",
"lv-LV",
"se-NO",
"fo-FO",
"fa-IR",
"ru-RU",
"zh-CN",
"nl-BE",
"gd-GB",
"sq-AL",
"ro-RO",
"cs-CZ",
"sk-SK",
"sl-SI",
"",
"sr-Latn",
"mk-MK",
"bg-BG",
"uk-UA",
"be-BY",
"uz-Latn",
"kk-KZ",
"az-Cyrl-AZ",
"az-AZ",
"hy-AM",
"ka-GE",
"",
"",
"tg-TJ",
"tk-TM",
"mn-Mong",
"mn-MN",
"ps-AF",
"ku-Arab",
"",
"sd-Arab",
"bo-CN",
"ne-NP",
"sa-IN",
"mr-IN",
"bn-IN",
"as-IN",
"gu-IN",
"pa-Arab",
"or-IN",
"ml-IN",
"kn-IN",
"ta-LK",
"te-IN",
"si-LK",
"",
"km-KH",
"lo-LA",
"vi-VN",
"id-ID",
"",
"ms-MY",
"ms-Arab",
"am-ET",
"ti-ET",
"",
"",
"sw-KE",
"rw-RW",
"",
"",
"",
"",
"cy-GB",
"eu-ES",
"ca-ES",
"",
"",
"",
"",
"tt-RU",
"ug-CN",
"",
"",
"",
"gl-ES",
"af-ZA",
"br-FR",
"iu-Latn-CA",
"gd-GB",
"",
"ga-IE",
"",
"",
"kl-GL",
"az-Latn"
};
enum OPENTYPE_STRING_ID
{
OPENTYPE_STRING_COPYRIGHT_NOTICE = 0,
OPENTYPE_STRING_FAMILY_NAME,
OPENTYPE_STRING_SUBFAMILY_NAME,
OPENTYPE_STRING_UNIQUE_IDENTIFIER,
OPENTYPE_STRING_FULL_FONTNAME,
OPENTYPE_STRING_VERSION_STRING,
OPENTYPE_STRING_POSTSCRIPT_FONTNAME,
OPENTYPE_STRING_TRADEMARK,
OPENTYPE_STRING_MANUFACTURER,
OPENTYPE_STRING_DESIGNER,
OPENTYPE_STRING_DESCRIPTION,
OPENTYPE_STRING_VENDOR_URL,
OPENTYPE_STRING_DESIGNER_URL,
OPENTYPE_STRING_LICENSE_DESCRIPTION,
OPENTYPE_STRING_LICENSE_INFO_URL,
OPENTYPE_STRING_RESERVED_ID15,
OPENTYPE_STRING_PREFERRED_FAMILY_NAME,
OPENTYPE_STRING_PREFERRED_SUBFAMILY_NAME,
OPENTYPE_STRING_COMPATIBLE_FULLNAME,
OPENTYPE_STRING_SAMPLE_TEXT,
OPENTYPE_STRING_POSTSCRIPT_CID_NAME,
OPENTYPE_STRING_WWS_FAMILY_NAME,
OPENTYPE_STRING_WWS_SUBFAMILY_NAME
};
static const UINT16 dwriteid_to_opentypeid[DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_CID_NAME+1] =
{
(UINT16)-1, /* DWRITE_INFORMATIONAL_STRING_NONE is not used */
OPENTYPE_STRING_COPYRIGHT_NOTICE,
OPENTYPE_STRING_VERSION_STRING,
OPENTYPE_STRING_TRADEMARK,
OPENTYPE_STRING_MANUFACTURER,
OPENTYPE_STRING_DESIGNER,
OPENTYPE_STRING_DESIGNER_URL,
OPENTYPE_STRING_DESCRIPTION,
OPENTYPE_STRING_VENDOR_URL,
OPENTYPE_STRING_LICENSE_DESCRIPTION,
OPENTYPE_STRING_LICENSE_INFO_URL,
OPENTYPE_STRING_FAMILY_NAME,
OPENTYPE_STRING_SUBFAMILY_NAME,
OPENTYPE_STRING_PREFERRED_FAMILY_NAME,
OPENTYPE_STRING_PREFERRED_SUBFAMILY_NAME,
OPENTYPE_STRING_SAMPLE_TEXT,
OPENTYPE_STRING_FULL_FONTNAME,
OPENTYPE_STRING_POSTSCRIPT_FONTNAME,
OPENTYPE_STRING_POSTSCRIPT_CID_NAME
};
/* CPAL table */
struct CPAL_Header_0
{
USHORT version;
USHORT numPaletteEntries;
USHORT numPalette;
USHORT numColorRecords;
ULONG offsetFirstColorRecord;
USHORT colorRecordIndices[1];
};
/* for version == 1, this comes after full CPAL_Header_0 */
struct CPAL_SubHeader_1
{
ULONG offsetPaletteTypeArray;
ULONG offsetPaletteLabelArray;
ULONG offsetPaletteEntryLabelArray;
};
struct CPAL_ColorRecord
{
BYTE blue;
BYTE green;
BYTE red;
BYTE alpha;
};
BOOL is_face_type_supported(DWRITE_FONT_FACE_TYPE type)
{
return (type == DWRITE_FONT_FACE_TYPE_CFF) ||
(type == DWRITE_FONT_FACE_TYPE_TRUETYPE) ||
(type == DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION) ||
(type == DWRITE_FONT_FACE_TYPE_RAW_CFF);
}
HRESULT opentype_analyze_font(IDWriteFontFileStream *stream, UINT32* font_count, DWRITE_FONT_FILE_TYPE *file_type, DWRITE_FONT_FACE_TYPE *face_type, BOOL *supported)
{
/* TODO: Do font validation */
DWRITE_FONT_FACE_TYPE face;
const void *font_data;
const char* tag;
void *context;
HRESULT hr;
hr = IDWriteFontFileStream_ReadFileFragment(stream, &font_data, 0, sizeof(TTC_Header_V1), &context);
if (FAILED(hr))
return hr;
tag = font_data;
*file_type = DWRITE_FONT_FILE_TYPE_UNKNOWN;
face = DWRITE_FONT_FACE_TYPE_UNKNOWN;
*font_count = 0;
if (DWRITE_MAKE_OPENTYPE_TAG(tag[0], tag[1], tag[2], tag[3]) == MS_TTCF_TAG)
{
const TTC_Header_V1 *header = font_data;
*font_count = GET_BE_DWORD(header->numFonts);
*file_type = DWRITE_FONT_FILE_TYPE_TRUETYPE_COLLECTION;
face = DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION;
}
else if (GET_BE_DWORD(*(DWORD*)font_data) == 0x10000)
{
*font_count = 1;
*file_type = DWRITE_FONT_FILE_TYPE_TRUETYPE;
face = DWRITE_FONT_FACE_TYPE_TRUETYPE;
}
else if (DWRITE_MAKE_OPENTYPE_TAG(tag[0], tag[1], tag[2], tag[3]) == MS_OTTO_TAG)
{
*file_type = DWRITE_FONT_FILE_TYPE_CFF;
face = DWRITE_FONT_FACE_TYPE_CFF;
}
if (face_type)
*face_type = face;
*supported = is_face_type_supported(face);
IDWriteFontFileStream_ReleaseFileFragment(stream, context);
return S_OK;
}
HRESULT opentype_get_font_table(IDWriteFontFileStream *stream, DWRITE_FONT_FACE_TYPE type, UINT32 font_index, UINT32 tag,
const void **table_data, void **table_context, UINT32 *table_size, BOOL *found)
{
HRESULT hr;
TTC_SFNT_V1 *font_header = NULL;
void *sfnt_context;
TT_TableRecord *table_record = NULL;
void *table_record_context;
int table_count, table_offset = 0;
int i;
if (found) *found = FALSE;
if (table_size) *table_size = 0;
if (type == DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION) {
const TTC_Header_V1 *ttc_header;
void * ttc_context;
hr = IDWriteFontFileStream_ReadFileFragment(stream, (const void**)&ttc_header, 0, sizeof(*ttc_header), &ttc_context);
if (SUCCEEDED(hr)) {
table_offset = GET_BE_DWORD(ttc_header->OffsetTable[0]);
if (font_index >= GET_BE_DWORD(ttc_header->numFonts))
hr = E_INVALIDARG;
else
hr = IDWriteFontFileStream_ReadFileFragment(stream, (const void**)&font_header, table_offset, sizeof(*font_header), &sfnt_context);
IDWriteFontFileStream_ReleaseFileFragment(stream, ttc_context);
}
}
else
hr = IDWriteFontFileStream_ReadFileFragment(stream, (const void**)&font_header, 0, sizeof(*font_header), &sfnt_context);
if (FAILED(hr))
return hr;
table_count = GET_BE_WORD(font_header->numTables);
table_offset += sizeof(*font_header);
for (i = 0; i < table_count; i++)
{
hr = IDWriteFontFileStream_ReadFileFragment(stream, (const void**)&table_record, table_offset, sizeof(*table_record), &table_record_context);
if (FAILED(hr))
break;
if (DWRITE_MAKE_OPENTYPE_TAG(table_record->tag[0], table_record->tag[1], table_record->tag[2], table_record->tag[3]) == tag)
break;
IDWriteFontFileStream_ReleaseFileFragment(stream, table_record_context);
table_offset += sizeof(*table_record);
}
IDWriteFontFileStream_ReleaseFileFragment(stream, sfnt_context);
if (SUCCEEDED(hr) && i < table_count)
{
int offset = GET_BE_DWORD(table_record->offset);
int length = GET_BE_DWORD(table_record->length);
IDWriteFontFileStream_ReleaseFileFragment(stream, table_record_context);
if (found) *found = TRUE;
if (table_size) *table_size = length;
hr = IDWriteFontFileStream_ReadFileFragment(stream, table_data, offset, length, table_context);
}
return hr;
}
/**********
* CMAP
**********/
static UINT32 opentype_cmap_get_unicode_ranges_count(const CMAP_Header *CMAP_Table)
{
UINT32 count = 0;
int i;
for (i = 0; i < GET_BE_WORD(CMAP_Table->numTables); i++) {
WORD type;
WORD *table;
if (GET_BE_WORD(CMAP_Table->tables[i].platformID) != 3)
continue;
table = (WORD*)(((BYTE*)CMAP_Table) + GET_BE_DWORD(CMAP_Table->tables[i].offset));
type = GET_BE_WORD(*table);
TRACE("table type %i\n", type);
switch (type)
{
case OPENTYPE_CMAP_TABLE_SEGMENT_MAPPING:
{
CMAP_SegmentMapping_0 *format = (CMAP_SegmentMapping_0*)table;
count += GET_BE_WORD(format->segCountX2)/2;
break;
}
case OPENTYPE_CMAP_TABLE_SEGMENTED_COVERAGE:
{
CMAP_SegmentedCoverage *format = (CMAP_SegmentedCoverage*)table;
count += GET_BE_DWORD(format->nGroups);
break;
}
default:
FIXME("table type %i unhandled.\n", type);
}
}
return count;
}
HRESULT opentype_cmap_get_unicode_ranges(void *data, UINT32 max_count, DWRITE_UNICODE_RANGE *ranges, UINT32 *count)
{
CMAP_Header *CMAP_Table = data;
int i, k = 0;
if (!CMAP_Table)
return E_FAIL;
*count = opentype_cmap_get_unicode_ranges_count(CMAP_Table);
for (i = 0; i < GET_BE_WORD(CMAP_Table->numTables) && k < max_count; i++)
{
WORD type;
WORD *table;
int j;
if (GET_BE_WORD(CMAP_Table->tables[i].platformID) != 3)
continue;
table = (WORD*)(((BYTE*)CMAP_Table) + GET_BE_DWORD(CMAP_Table->tables[i].offset));
type = GET_BE_WORD(*table);
TRACE("table type %i\n", type);
switch (type)
{
case OPENTYPE_CMAP_TABLE_SEGMENT_MAPPING:
{
CMAP_SegmentMapping_0 *format = (CMAP_SegmentMapping_0*)table;
UINT16 segment_count = GET_BE_WORD(format->segCountX2)/2;
UINT16 *startCode = (WORD*)((BYTE*)format + sizeof(CMAP_SegmentMapping_0) + (sizeof(WORD) * segment_count));
for (j = 0; j < segment_count && GET_BE_WORD(format->endCode[j]) < 0xffff && k < max_count; j++, k++) {
ranges[k].first = GET_BE_WORD(startCode[j]);
ranges[k].last = GET_BE_WORD(format->endCode[j]);
}
break;
}
case OPENTYPE_CMAP_TABLE_SEGMENTED_COVERAGE:
{
CMAP_SegmentedCoverage *format = (CMAP_SegmentedCoverage*)table;
for (j = 0; j < GET_BE_DWORD(format->nGroups) && k < max_count; j++, k++) {
ranges[k].first = GET_BE_DWORD(format->groups[j].startCharCode);
ranges[k].last = GET_BE_DWORD(format->groups[j].endCharCode);
}
break;
}
default:
FIXME("table type %i unhandled.\n", type);
}
}
return *count > max_count ? E_NOT_SUFFICIENT_BUFFER : S_OK;
}
void opentype_get_font_metrics(IDWriteFontFileStream *stream, DWRITE_FONT_FACE_TYPE face_type, UINT32 face_index,
DWRITE_FONT_METRICS1 *metrics, DWRITE_CARET_METRICS *caret)
{
void *os2_context, *head_context, *post_context, *hhea_context;
const TT_OS2_V2 *tt_os2;
const TT_HEAD *tt_head;
const TT_POST *tt_post;
const TT_HHEA *tt_hhea;
memset(metrics, 0, sizeof(*metrics));
opentype_get_font_table(stream, face_type, face_index, MS_OS2_TAG, (const void**)&tt_os2, &os2_context, NULL, NULL);
opentype_get_font_table(stream, face_type, face_index, MS_HEAD_TAG, (const void**)&tt_head, &head_context, NULL, NULL);
opentype_get_font_table(stream, face_type, face_index, MS_POST_TAG, (const void**)&tt_post, &post_context, NULL, NULL);
opentype_get_font_table(stream, face_type, face_index, MS_HHEA_TAG, (const void**)&tt_hhea, &hhea_context, NULL, NULL);
if (tt_head) {
metrics->designUnitsPerEm = GET_BE_WORD(tt_head->unitsPerEm);
metrics->glyphBoxLeft = GET_BE_WORD(tt_head->xMin);
metrics->glyphBoxTop = GET_BE_WORD(tt_head->yMax);
metrics->glyphBoxRight = GET_BE_WORD(tt_head->xMax);
metrics->glyphBoxBottom = GET_BE_WORD(tt_head->yMin);
}
if (caret) {
if (tt_hhea) {
caret->slopeRise = GET_BE_WORD(tt_hhea->caretSlopeRise);
caret->slopeRun = GET_BE_WORD(tt_hhea->caretSlopeRun);
caret->offset = GET_BE_WORD(tt_hhea->caretOffset);
}
else {
caret->slopeRise = 0;
caret->slopeRun = 0;
caret->offset = 0;
}
}
if (tt_os2) {
USHORT version = GET_BE_WORD(tt_os2->version);
metrics->ascent = GET_BE_WORD(tt_os2->usWinAscent);
metrics->descent = GET_BE_WORD(tt_os2->usWinDescent);
/* line gap is estimated using two sets of ascender/descender values and 'hhea' line gap */
if (tt_hhea) {
SHORT descender = (SHORT)GET_BE_WORD(tt_hhea->descender);
INT32 linegap;
linegap = GET_BE_WORD(tt_hhea->ascender) + abs(descender) + GET_BE_WORD(tt_hhea->linegap) -
metrics->ascent - metrics->descent;
metrics->lineGap = linegap > 0 ? linegap : 0;
}
metrics->strikethroughPosition = GET_BE_WORD(tt_os2->yStrikeoutPosition);
metrics->strikethroughThickness = GET_BE_WORD(tt_os2->yStrikeoutSize);
metrics->subscriptPositionX = GET_BE_WORD(tt_os2->ySubscriptXOffset);
/* Y offset is stored as positive offset below baseline */
metrics->subscriptPositionY = -GET_BE_WORD(tt_os2->ySubscriptYOffset);
metrics->subscriptSizeX = GET_BE_WORD(tt_os2->ySubscriptXSize);
metrics->subscriptSizeY = GET_BE_WORD(tt_os2->ySubscriptYSize);
metrics->superscriptPositionX = GET_BE_WORD(tt_os2->ySuperscriptXOffset);
metrics->superscriptPositionY = GET_BE_WORD(tt_os2->ySuperscriptYOffset);
metrics->superscriptSizeX = GET_BE_WORD(tt_os2->ySuperscriptXSize);
metrics->superscriptSizeY = GET_BE_WORD(tt_os2->ySuperscriptYSize);
/* version 2 fields */
if (version >= 2) {
metrics->capHeight = GET_BE_WORD(tt_os2->sCapHeight);
metrics->xHeight = GET_BE_WORD(tt_os2->sxHeight);
}
/* version 4 fields */
if (version >= 4) {
if (GET_BE_WORD(tt_os2->fsSelection) & OS2_FSSELECTION_USE_TYPO_METRICS) {
SHORT descent = GET_BE_WORD(tt_os2->sTypoDescender);
metrics->ascent = GET_BE_WORD(tt_os2->sTypoAscender);
metrics->descent = descent < 0 ? -descent : 0;
metrics->lineGap = GET_BE_WORD(tt_os2->sTypoLineGap);
metrics->hasTypographicMetrics = TRUE;
}
}
}
if (tt_post) {
metrics->underlinePosition = GET_BE_WORD(tt_post->underlinePosition);
metrics->underlineThickness = GET_BE_WORD(tt_post->underlineThickness);
}
/* estimate missing metrics */
if (metrics->xHeight == 0)
metrics->xHeight = metrics->designUnitsPerEm / 2;
if (metrics->capHeight == 0)
metrics->capHeight = metrics->designUnitsPerEm * 7 / 10;
if (tt_os2)
IDWriteFontFileStream_ReleaseFileFragment(stream, os2_context);
if (tt_head)
IDWriteFontFileStream_ReleaseFileFragment(stream, head_context);
if (tt_post)
IDWriteFontFileStream_ReleaseFileFragment(stream, post_context);
if (tt_hhea)
IDWriteFontFileStream_ReleaseFileFragment(stream, hhea_context);
}
void opentype_get_font_properties(IDWriteFontFileStream *stream, DWRITE_FONT_FACE_TYPE type, UINT32 index,
struct dwrite_font_props *props)
{
void *os2_context, *head_context;
const TT_OS2_V2 *tt_os2;
const TT_HEAD *tt_head;
opentype_get_font_table(stream, type, index, MS_OS2_TAG, (const void**)&tt_os2, &os2_context, NULL, NULL);
opentype_get_font_table(stream, type, index, MS_HEAD_TAG, (const void**)&tt_head, &head_context, NULL, NULL);
/* default stretch, weight and style to normal */
props->stretch = DWRITE_FONT_STRETCH_NORMAL;
props->weight = DWRITE_FONT_WEIGHT_NORMAL;
props->style = DWRITE_FONT_STYLE_NORMAL;
memset(&props->panose, 0, sizeof(props->panose));
/* DWRITE_FONT_STRETCH enumeration values directly match font data values */
if (tt_os2) {
USHORT version = GET_BE_WORD(tt_os2->version);
USHORT fsSelection = GET_BE_WORD(tt_os2->fsSelection);
if (GET_BE_WORD(tt_os2->usWidthClass) <= DWRITE_FONT_STRETCH_ULTRA_EXPANDED)
props->stretch = GET_BE_WORD(tt_os2->usWidthClass);
props->weight = GET_BE_WORD(tt_os2->usWeightClass);
if (version >= 4 && (fsSelection & OS2_FSSELECTION_OBLIQUE))
props->style = DWRITE_FONT_STYLE_OBLIQUE;
else if (fsSelection & OS2_FSSELECTION_ITALIC)
props->style = DWRITE_FONT_STYLE_ITALIC;
memcpy(&props->panose, &tt_os2->panose, sizeof(props->panose));
}
else if (tt_head) {
USHORT macStyle = GET_BE_WORD(tt_head->macStyle);
if (macStyle & TT_HEAD_MACSTYLE_ITALIC)
props->style = DWRITE_FONT_STYLE_ITALIC;
}
TRACE("stretch=%d, weight=%d, style %d\n", props->stretch, props->weight, props->style);
if (tt_os2)
IDWriteFontFileStream_ReleaseFileFragment(stream, os2_context);
if (tt_head)
IDWriteFontFileStream_ReleaseFileFragment(stream, head_context);
}
static UINT get_name_record_codepage(enum OPENTYPE_PLATFORM_ID platform, USHORT encoding)
{
UINT codepage = 0;
switch (platform) {
case OPENTYPE_PLATFORM_UNICODE:
break;
case OPENTYPE_PLATFORM_MAC:
switch (encoding)
{
case TT_NAME_MAC_ENCODING_ROMAN:
codepage = 10000;
break;
case TT_NAME_MAC_ENCODING_JAPANESE:
codepage = 10001;
break;
case TT_NAME_MAC_ENCODING_TRAD_CHINESE:
codepage = 10002;
break;
case TT_NAME_MAC_ENCODING_KOREAN:
codepage = 10003;
break;
case TT_NAME_MAC_ENCODING_ARABIC:
codepage = 10004;
break;
case TT_NAME_MAC_ENCODING_HEBREW:
codepage = 10005;
break;
case TT_NAME_MAC_ENCODING_GREEK:
codepage = 10006;
break;
case TT_NAME_MAC_ENCODING_RUSSIAN:
codepage = 10007;
break;
case TT_NAME_MAC_ENCODING_SIMPL_CHINESE:
codepage = 10008;
break;
case TT_NAME_MAC_ENCODING_THAI:
codepage = 10021;
break;
default:
FIXME("encoding %u not handled, platform %d.\n", encoding, platform);
break;
}
break;
case OPENTYPE_PLATFORM_WIN:
switch (encoding)
{
case TT_NAME_WINDOWS_ENCODING_SYMBOL:
case TT_NAME_WINDOWS_ENCODING_UCS2:
break;
case TT_NAME_WINDOWS_ENCODING_SJIS:
codepage = 932;
break;
case TT_NAME_WINDOWS_ENCODING_PRC:
codepage = 936;
break;
case TT_NAME_WINDOWS_ENCODING_BIG5:
codepage = 950;
break;
case TT_NAME_WINDOWS_ENCODING_WANSUNG:
codepage = 20949;
break;
case TT_NAME_WINDOWS_ENCODING_JOHAB:
codepage = 1361;
break;
default:
FIXME("encoding %u not handled, platform %d.\n", encoding, platform);
break;
}
break;
default:
FIXME("unknown platform %d\n", platform);
}
return codepage;
}
static void get_name_record_locale(enum OPENTYPE_PLATFORM_ID platform, USHORT lang_id, WCHAR *locale, USHORT locale_len)
{
static const WCHAR enusW[] = {'e','n','-','U','S',0};
switch (platform) {
case OPENTYPE_PLATFORM_MAC:
{
const char *locale_name = NULL;
if (lang_id > TT_NAME_MAC_LANGID_AZER_ROMAN)
ERR("invalid mac lang id %d\n", lang_id);
else if (!name_mac_langid_to_locale[lang_id][0])
FIXME("failed to map mac lang id %d to locale name\n", lang_id);
else
locale_name = name_mac_langid_to_locale[lang_id];
if (locale_name)
MultiByteToWideChar(CP_ACP, 0, name_mac_langid_to_locale[lang_id], -1, locale, locale_len);
else
strcpyW(locale, enusW);
break;
}
case OPENTYPE_PLATFORM_WIN:
if (!LCIDToLocaleName(MAKELCID(lang_id, SORT_DEFAULT), locale, locale_len, 0)) {
FIXME("failed to get locale name for lcid=0x%08x\n", MAKELCID(lang_id, SORT_DEFAULT));
strcpyW(locale, enusW);
}
break;
default:
FIXME("unknown platform %d\n", platform);
}
}
HRESULT opentype_get_font_strings_from_id(const void *table_data, DWRITE_INFORMATIONAL_STRING_ID id, IDWriteLocalizedStrings **strings)
{
const TT_NAME_V0 *header;
BYTE *storage_area = 0;
USHORT count = 0;
UINT16 name_id;
BOOL exists;
HRESULT hr;
int i;
if (!table_data)
return E_FAIL;
hr = create_localizedstrings(strings);
if (FAILED(hr)) return hr;
header = table_data;
switch (header->format) {
case 0:
break;
default:
FIXME("unsupported NAME format %d\n", header->format);
}
storage_area = (LPBYTE)table_data + GET_BE_WORD(header->stringOffset);
count = GET_BE_WORD(header->count);
name_id = dwriteid_to_opentypeid[id];
exists = FALSE;
for (i = 0; i < count; i++) {
const TT_NameRecord *record = &header->nameRecord[i];
USHORT lang_id, length, offset, encoding, platform;
if (GET_BE_WORD(record->nameID) != name_id)
continue;
exists = TRUE;
/* Right now only accept unicode and windows encoded fonts */
platform = GET_BE_WORD(record->platformID);
if (platform != OPENTYPE_PLATFORM_UNICODE &&
platform != OPENTYPE_PLATFORM_MAC &&
platform != OPENTYPE_PLATFORM_WIN)
{
FIXME("platform %i not supported\n", platform);
continue;
}
/* Skip such entries for now, as it's not clear which locale is implied when
unicode platform is used. Also fonts tend to duplicate those strings as
WIN platform entries. */
if (platform == OPENTYPE_PLATFORM_UNICODE)
continue;
lang_id = GET_BE_WORD(record->languageID);
length = GET_BE_WORD(record->length);
offset = GET_BE_WORD(record->offset);
encoding = GET_BE_WORD(record->encodingID);
if (lang_id < 0x8000) {
WCHAR locale[LOCALE_NAME_MAX_LENGTH];
WCHAR *name_string;
UINT codepage;
codepage = get_name_record_codepage(platform, encoding);
get_name_record_locale(platform, lang_id, locale, sizeof(locale)/sizeof(WCHAR));
if (codepage) {
DWORD len = MultiByteToWideChar(codepage, 0, (LPSTR)(storage_area + offset), length, NULL, 0);
name_string = heap_alloc(sizeof(WCHAR) * (len+1));
MultiByteToWideChar(codepage, 0, (LPSTR)(storage_area + offset), length, name_string, len);
name_string[len] = 0;
}
else {
int i;
length /= sizeof(WCHAR);
name_string = heap_strdupnW((LPWSTR)(storage_area + offset), length);
for (i = 0; i < length; i++)
name_string[i] = GET_BE_WORD(name_string[i]);
}
TRACE("string %s for locale %s found\n", debugstr_w(name_string), debugstr_w(locale));
add_localizedstring(*strings, locale, name_string);
heap_free(name_string);
}
else {
FIXME("handle NAME format 1\n");
continue;
}
}
if (!exists) {
IDWriteLocalizedStrings_Release(*strings);
*strings = NULL;
}
return hr;
}
static inline const OT_Script *opentype_get_script(const OT_ScriptList *scriptlist, UINT32 scripttag)
{
UINT16 j;
for (j = 0; j < GET_BE_WORD(scriptlist->ScriptCount); j++) {
const char *tag = scriptlist->ScriptRecord[j].ScriptTag;
if (scripttag == DWRITE_MAKE_OPENTYPE_TAG(tag[0], tag[1], tag[2], tag[3]))
return (OT_Script*)((BYTE*)scriptlist + GET_BE_WORD(scriptlist->ScriptRecord[j].Script));
}
return NULL;
}
static inline const OT_LangSys *opentype_get_langsys(const OT_Script *script, UINT32 languagetag)
{
UINT16 j;
for (j = 0; j < GET_BE_WORD(script->LangSysCount); j++) {
const char *tag = script->LangSysRecord[j].LangSysTag;
if (languagetag == DWRITE_MAKE_OPENTYPE_TAG(tag[0], tag[1], tag[2], tag[3]))
return (OT_LangSys*)((BYTE*)script + GET_BE_WORD(script->LangSysRecord[j].LangSys));
}
return NULL;
}
static void opentype_add_font_features(const GPOS_GSUB_Header *header, const OT_LangSys *langsys,
UINT32 max_tagcount, UINT32 *count, DWRITE_FONT_FEATURE_TAG *tags)
{
const OT_FeatureList *features = (const OT_FeatureList*)((const BYTE*)header + GET_BE_WORD(header->FeatureList));
UINT16 j;
for (j = 0; j < GET_BE_WORD(langsys->FeatureCount); j++) {
const OT_FeatureRecord *feature = &features->FeatureRecord[langsys->FeatureIndex[j]];
const char *tag = feature->FeatureTag;
if (*count < max_tagcount)
tags[*count] = DWRITE_MAKE_OPENTYPE_TAG(tag[0], tag[1], tag[2], tag[3]);
(*count)++;
}
}
HRESULT opentype_get_typographic_features(IDWriteFontFace *fontface, UINT32 scripttag, UINT32 languagetag, UINT32 max_tagcount,
UINT32 *count, DWRITE_FONT_FEATURE_TAG *tags)
{
UINT32 tables[2] = { MS_GSUB_TAG, MS_GPOS_TAG };
HRESULT hr;
UINT8 i;
*count = 0;
for (i = 0; i < sizeof(tables)/sizeof(tables[0]); i++) {
const OT_ScriptList *scriptlist;
const GPOS_GSUB_Header *header;
const OT_Script *script;
const void *ptr;
void *context;
UINT32 size;
BOOL exists;
exists = FALSE;
hr = IDWriteFontFace_TryGetFontTable(fontface, tables[i], &ptr, &size, &context, &exists);
if (FAILED(hr))
return hr;
if (!exists)
continue;
header = (const GPOS_GSUB_Header*)ptr;
scriptlist = (const OT_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
script = opentype_get_script(scriptlist, scripttag);
if (script) {
const OT_LangSys *langsys = opentype_get_langsys(script, languagetag);
if (langsys)
opentype_add_font_features(header, langsys, max_tagcount, count, tags);
}
IDWriteFontFace_ReleaseFontTable(fontface, context);
}
return *count > max_tagcount ? E_NOT_SUFFICIENT_BUFFER : S_OK;
}
static const struct VDMX_group *find_vdmx_group(const struct VDMX_Header *hdr)
{
WORD num_ratios, i, group_offset = 0;
struct VDMX_Ratio *ratios = (struct VDMX_Ratio*)(hdr + 1);
BYTE dev_x_ratio = 1, dev_y_ratio = 1;
num_ratios = GET_BE_WORD(hdr->numRatios);
for (i = 0; i < num_ratios; i++) {
if (!ratios[i].bCharSet) continue;
if ((ratios[i].xRatio == 0 && ratios[i].yStartRatio == 0 &&
ratios[i].yEndRatio == 0) ||
(ratios[i].xRatio == dev_x_ratio && ratios[i].yStartRatio <= dev_y_ratio &&
ratios[i].yEndRatio >= dev_y_ratio))
{
group_offset = GET_BE_WORD(*((WORD *)(ratios + num_ratios) + i));
break;
}
}
if (group_offset)
return (const struct VDMX_group *)((BYTE *)hdr + group_offset);
return NULL;
}
BOOL opentype_get_vdmx_size(const void *data, INT emsize, UINT16 *ascent, UINT16 *descent)
{
const struct VDMX_Header *hdr = (const struct VDMX_Header*)data;
const struct VDMX_group *group;
const struct VDMX_vTable *tables;
WORD recs, i;
if (!data)
return FALSE;
group = find_vdmx_group(hdr);
if (!group)
return FALSE;
recs = GET_BE_WORD(group->recs);
if (emsize < group->startsz || emsize >= group->endsz) return FALSE;
tables = (const struct VDMX_vTable *)(group + 1);
for (i = 0; i < recs; i++) {
WORD ppem = GET_BE_WORD(tables[i].yPelHeight);
if (ppem > emsize) {
FIXME("interpolate %d\n", emsize);
return FALSE;
}
if (ppem == emsize) {
*ascent = (SHORT)GET_BE_WORD(tables[i].yMax);
*descent = -(SHORT)GET_BE_WORD(tables[i].yMin);
return TRUE;
}
}
return FALSE;
}
WORD opentype_get_gasp_flags(const WORD *ptr, UINT32 size, INT emsize)
{
WORD num_recs, version;
WORD flags = 0;
if (!ptr)
return 0;
version = GET_BE_WORD( *ptr++ );
num_recs = GET_BE_WORD( *ptr++ );
if (version > 1 || size < (num_recs * 2 + 2) * sizeof(WORD)) {
ERR("unsupported gasp table: ver %d size %d recs %d\n", version, size, num_recs);
goto done;
}
while (num_recs--) {
flags = GET_BE_WORD( *(ptr + 1) );
if (emsize <= GET_BE_WORD( *ptr )) break;
ptr += 2;
}
done:
return flags;
}
UINT32 opentype_get_cpal_palettecount(const void *cpal)
{
const struct CPAL_Header_0 *header = (const struct CPAL_Header_0*)cpal;
return header ? GET_BE_WORD(header->numPalette) : 0;
}
UINT32 opentype_get_cpal_paletteentrycount(const void *cpal)
{
const struct CPAL_Header_0 *header = (const struct CPAL_Header_0*)cpal;
return header ? GET_BE_WORD(header->numPaletteEntries) : 0;
}
HRESULT opentype_get_cpal_entries(const void *cpal, UINT32 palette, UINT32 first_entry_index, UINT32 entry_count,
DWRITE_COLOR_F *entries)
{
const struct CPAL_Header_0 *header = (const struct CPAL_Header_0*)cpal;
const struct CPAL_ColorRecord *records;
UINT32 palettecount, entrycount, i;
if (!header) return DWRITE_E_NOCOLOR;
palettecount = GET_BE_WORD(header->numPalette);
if (palette >= palettecount)
return DWRITE_E_NOCOLOR;
entrycount = GET_BE_WORD(header->numPaletteEntries);
if (first_entry_index + entry_count > entrycount)
return E_INVALIDARG;
records = (const struct CPAL_ColorRecord*)((BYTE*)cpal + GET_BE_DWORD(header->offsetFirstColorRecord));
first_entry_index += GET_BE_WORD(header->colorRecordIndices[palette]);
for (i = 0; i < entry_count; i++) {
entries[i].r = records[first_entry_index + i].red / 255.0f;
entries[i].g = records[first_entry_index + i].green / 255.0f;
entries[i].b = records[first_entry_index + i].blue / 255.0f;
entries[i].a = records[first_entry_index + i].alpha / 255.0f;
}
return S_OK;
}
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