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;
}
HRESULT analyze_opentype_font(const void* font_data, UINT32* font_count, DWRITE_FONT_FILE_TYPE *file_type, DWRITE_FONT_FACE_TYPE *face_type, BOOL *supported)
{
/* TODO: Do font validation */
const char* tag = font_data;
*supported = FALSE;
*file_type = DWRITE_FONT_FILE_TYPE_UNKNOWN;
if (face_type)
*face_type = 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;
if (face_type)
*face_type = DWRITE_FONT_FACE_TYPE_TRUETYPE_COLLECTION;
*supported = TRUE;
}
else if (GET_BE_DWORD(*(DWORD*)font_data) == 0x10000)
{
*font_count = 1;
*file_type = DWRITE_FONT_FILE_TYPE_TRUETYPE;
if (face_type)
*face_type = DWRITE_FONT_FACE_TYPE_TRUETYPE;
*supported = TRUE;
}
else if (DWRITE_MAKE_OPENTYPE_TAG(tag[0], tag[1], tag[2], tag[3]) == MS_OTTO_TAG)
{
*file_type = DWRITE_FONT_FILE_TYPE_CFF;
}
return S_OK;
}
static int compare_group(const void *a, const void* b)
{
const DWORD *chr = a;
const CMAP_SegmentedCoverage_group *group = b;
if (*chr < GET_BE_DWORD(group->startCharCode))
return -1;
if (*chr > GET_BE_DWORD(group->endCharCode))
return 1;
return 0;
}
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;
}
static void CMAP12_GetGlyphIndex(CMAP_SegmentedCoverage* format, UINT32 utf32c, UINT16 *pgi)
{
CMAP_SegmentedCoverage_group *group;
group = bsearch(&utf32c, format->groups, GET_BE_DWORD(format->nGroups),
sizeof(CMAP_SegmentedCoverage_group), compare_group);
if (group)
{
DWORD offset = utf32c - GET_BE_DWORD(group->startCharCode);
*pgi = GET_BE_DWORD(group->startGlyphID) + offset;
}
}
void opentype_cmap_get_glyphindex(void *data, UINT32 utf32c, UINT16 *pgi)
{
CMAP_Header *CMAP_Table = data;
int i;
*pgi = 0;
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:
CMAP4_GetGlyphIndex((CMAP_SegmentMapping_0*) table, utf32c, pgi);
break;
case OPENTYPE_CMAP_TABLE_SEGMENTED_COVERAGE:
CMAP12_GetGlyphIndex((CMAP_SegmentedCoverage*) table, utf32c, pgi);
break;
default:
TRACE("table type %i unhandled.\n", type);
}
if (*pgi) return;
}
}
void KeyEventHandler::process( util::Buffer *msg ) {
if (!_onKeyEvent.empty()) {
util::BYTE *payload = MSG_PAYLOAD(msg->buffer());
util::DWORD value = GET_BE_DWORD( payload );
util::BYTE isUp = GET_BYTE(payload+4);
_onKeyEvent( static_cast<util::key::type>( value ), (isUp == 1) );
}
}
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;
}
static BOOL get_glyf_pos(TYPE42 *t42, DWORD index, DWORD *start, DWORD *end)
{
WORD loca_format = GET_BE_WORD(t42->tables[t42->head_tab].data + 50);
TRACE("loca_format = %d\n", loca_format);
switch(loca_format) {
case 0:
*start = GET_BE_WORD(((WORD*)t42->tables[t42->loca_tab].data) + index);
*start <<= 1;
*end = GET_BE_WORD(((WORD*)t42->tables[t42->loca_tab].data) + index + 1);
*end <<= 1;
break;
case 1:
*start = GET_BE_DWORD(((DWORD*)t42->tables[t42->loca_tab].data) + index);
*end = GET_BE_DWORD(((DWORD*)t42->tables[t42->loca_tab].data) + index + 1);
break;
default:
ERR("Unknown loca_format %d\n", loca_format);
return FALSE;
}
return TRUE;
}
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;
}
VOID OpenType_CMAP_GetGlyphIndex(LPVOID data, DWORD utf32c, LPWORD pgi, DWORD flags)
{
int i;
CMAP_Header *CMAP_Table = NULL;
if (flags & GGI_MARK_NONEXISTING_GLYPHS)
*pgi = 0xffff;
else
*pgi = 0;
CMAP_Table = data;
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("Type %i\n", type);
/* Break when we find a handled type */
switch(type)
{
case 4:
CMAP4_GetGlyphIndex((CMAP_SegmentMapping_0*) table, utf32c, pgi);
break;
case 12:
CMAP12_GetGlyphIndex((CMAP_SegmentedCoverage*) table, utf32c, pgi);
break;
default:
TRACE("Type %i unhandled.\n", type);
}
}
}
