Rémi Bernon : gdi32: Introduce new opentype font parsing helpers.
Alexandre Julliard
julliard at winehq.org
Thu Dec 3 15:35:58 CST 2020
Module: wine
Branch: master
Commit: e338d046976064d6f050591f1c99fa1ddd4077b7
URL: https://source.winehq.org/git/wine.git/?a=commit;h=e338d046976064d6f050591f1c99fa1ddd4077b7
Author: Rémi Bernon <rbernon at codeweavers.com>
Date: Tue Dec 1 15:54:48 2020 +0100
gdi32: Introduce new opentype font parsing helpers.
Mostly taken from dwrite source, adapted to make it more flexible.
Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
Signed-off-by: Huw Davies <huw at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/gdi32/Makefile.in | 1 +
dlls/gdi32/freetype.c | 11 +++
dlls/gdi32/gdi_private.h | 7 ++
dlls/gdi32/opentype.c | 220 +++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 239 insertions(+)
diff --git a/dlls/gdi32/Makefile.in b/dlls/gdi32/Makefile.in
index a965e80001c..910450b9f64 100644
--- a/dlls/gdi32/Makefile.in
+++ b/dlls/gdi32/Makefile.in
@@ -42,6 +42,7 @@ C_SRCS = \
mfdrv/objects.c \
mfdrv/text.c \
opengl.c \
+ opentype.c \
painting.c \
palette.c \
path.c \
diff --git a/dlls/gdi32/freetype.c b/dlls/gdi32/freetype.c
index cb993034d09..686f2b54682 100644
--- a/dlls/gdi32/freetype.c
+++ b/dlls/gdi32/freetype.c
@@ -1110,8 +1110,10 @@ struct unix_face
static struct unix_face *unix_face_create( const char *unix_name, void *data_ptr, DWORD data_size,
UINT face_index, DWORD flags )
{
+ const struct ttc_sfnt_v1 *ttc_sfnt_v1;
struct unix_face *This;
struct stat st;
+ DWORD face_count;
int fd;
TRACE( "unix_name %s, face_index %u, data_ptr %p, data_size %u, flags %#x\n",
@@ -1138,11 +1140,20 @@ static struct unix_face *unix_face_create( const char *unix_name, void *data_ptr
RtlFreeHeap( GetProcessHeap(), 0, This );
This = NULL;
}
+ else if (opentype_get_ttc_sfnt_v1( data_ptr, data_size, face_index, &face_count, &ttc_sfnt_v1 ))
+ {
+ This->scalable = TRUE;
+ This->num_faces = face_count;
+ }
else
{
+ WARN( "unable to parse font, falling back to FreeType\n" );
This->scalable = FT_IS_SCALABLE( This->ft_face );
This->num_faces = This->ft_face->num_faces;
+ }
+ if (This)
+ {
This->family_name = ft_face_get_family_name( This->ft_face, system_lcid );
This->second_name = ft_face_get_family_name( This->ft_face, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT) );
diff --git a/dlls/gdi32/gdi_private.h b/dlls/gdi32/gdi_private.h
index b9a06415538..a529cb0890c 100644
--- a/dlls/gdi32/gdi_private.h
+++ b/dlls/gdi32/gdi_private.h
@@ -414,6 +414,13 @@ struct font_callback_funcs
extern void font_init(void) DECLSPEC_HIDDEN;
+/* opentype.c */
+
+struct ttc_sfnt_v1;
+
+extern BOOL opentype_get_ttc_sfnt_v1( const void *data, size_t size, DWORD index, DWORD *count,
+ const struct ttc_sfnt_v1 **ttc_sfnt_v1 ) DECLSPEC_HIDDEN;
+
/* gdiobj.c */
extern HGDIOBJ alloc_gdi_handle( void *obj, WORD type, const struct gdi_obj_funcs *funcs ) DECLSPEC_HIDDEN;
extern void *free_gdi_handle( HGDIOBJ handle ) DECLSPEC_HIDDEN;
diff --git a/dlls/gdi32/opentype.c b/dlls/gdi32/opentype.c
new file mode 100644
index 00000000000..2363439cdc5
--- /dev/null
+++ b/dlls/gdi32/opentype.c
@@ -0,0 +1,220 @@
+/*
+ * Copyright 2020 Rémi Bernon for CodeWeavers
+ * 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
+ */
+
+#if 0
+#pragma makedep unix
+#endif
+
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include "windef.h"
+#include "winbase.h"
+
+#include "wine/debug.h"
+
+#include "gdi_private.h"
+
+WINE_DEFAULT_DEBUG_CHANNEL(font);
+
+#define MS_OTTO_TAG MS_MAKE_TAG('O','T','T','O')
+#define MS_HEAD_TAG MS_MAKE_TAG('h','e','a','d')
+#define MS_HHEA_TAG MS_MAKE_TAG('h','h','e','a')
+#define MS_OS_2_TAG MS_MAKE_TAG('O','S','/','2')
+#define MS_EBSC_TAG MS_MAKE_TAG('E','B','S','C')
+#define MS_EBDT_TAG MS_MAKE_TAG('E','B','D','T')
+#define MS_CBDT_TAG MS_MAKE_TAG('C','B','D','T')
+
+#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
+
+#include "pshpack2.h"
+struct ttc_header_v1
+{
+ CHAR TTCTag[4];
+ DWORD Version;
+ DWORD numFonts;
+ DWORD OffsetTable[1];
+};
+
+struct ttc_sfnt_v1
+{
+ DWORD version;
+ WORD numTables;
+ WORD searchRange;
+ WORD entrySelector;
+ WORD rangeShift;
+};
+
+struct tt_tablerecord
+{
+ DWORD tag;
+ DWORD checkSum;
+ DWORD offset;
+ DWORD length;
+};
+
+struct tt_os2_v1
+{
+ 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;
+};
+#include "poppack.h"
+
+static BOOL opentype_get_table_ptr( const void *data, size_t size, const struct ttc_sfnt_v1 *ttc_sfnt_v1,
+ UINT32 table_tag, const void **table_ptr, UINT32 *table_size )
+{
+ const struct tt_tablerecord *table_record;
+ UINT16 i, table_count;
+ UINT32 offset, length;
+
+ if (!ttc_sfnt_v1) return FALSE;
+
+ table_record = (const struct tt_tablerecord *)(ttc_sfnt_v1 + 1);
+ table_count = GET_BE_WORD( ttc_sfnt_v1->numTables );
+ for (i = 0; i < table_count; i++, table_record++)
+ {
+ if (table_record->tag != table_tag) continue;
+ offset = GET_BE_DWORD( table_record->offset );
+ length = GET_BE_DWORD( table_record->length );
+ if (size < offset + length) return FALSE;
+ if (table_size && length < *table_size) return FALSE;
+
+ if (table_ptr) *table_ptr = (const char *)data + offset;
+ if (table_size) *table_size = length;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+static BOOL opentype_get_tt_os2_v1( const void *data, size_t size, const struct ttc_sfnt_v1 *ttc_sfnt_v1,
+ const struct tt_os2_v1 **tt_os2_v1 )
+{
+ UINT32 table_size = sizeof(**tt_os2_v1);
+ return opentype_get_table_ptr( data, size, ttc_sfnt_v1, MS_OS_2_TAG, (const void **)tt_os2_v1, &table_size );
+}
+
+BOOL opentype_get_ttc_sfnt_v1( const void *data, size_t size, DWORD index, DWORD *count, const struct ttc_sfnt_v1 **ttc_sfnt_v1 )
+{
+ const struct ttc_header_v1 *ttc_header_v1 = data;
+ const struct tt_os2_v1 *tt_os2_v1;
+ UINT32 offset, fourcc;
+
+ *ttc_sfnt_v1 = NULL;
+ *count = 1;
+
+ if (size < sizeof(fourcc)) return FALSE;
+ memcpy( &fourcc, data, sizeof(fourcc) );
+
+ switch (fourcc)
+ {
+ default:
+ WARN( "unsupported font format %x\n", fourcc );
+ return FALSE;
+ case MS_TTCF_TAG:
+ if (size < sizeof(ttc_header_v1)) return FALSE;
+ if (index >= (*count = GET_BE_DWORD( ttc_header_v1->numFonts ))) return FALSE;
+ offset = GET_BE_DWORD( ttc_header_v1->OffsetTable[index] );
+ break;
+ case 0x00000100:
+ case MS_OTTO_TAG:
+ offset = 0;
+ break;
+ }
+
+ if (size < offset + sizeof(**ttc_sfnt_v1)) return FALSE;
+ *ttc_sfnt_v1 = (const struct ttc_sfnt_v1 *)((const char *)data + offset);
+
+ if (!opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_HEAD_TAG, NULL, NULL ))
+ {
+ WARN( "unsupported sfnt font: missing head table.\n" );
+ return FALSE;
+ }
+
+ if (!opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_HHEA_TAG, NULL, NULL ))
+ {
+ WARN( "unsupported sfnt font: missing hhea table.\n" );
+ return FALSE;
+ }
+
+ if (!opentype_get_tt_os2_v1( data, size, *ttc_sfnt_v1, &tt_os2_v1 ))
+ {
+ WARN( "unsupported sfnt font: missing OS/2 table.\n" );
+ return FALSE;
+ }
+
+ /* Wine uses ttfs as an intermediate step in building its bitmap fonts;
+ we don't want to load these. */
+ if (!memcmp( tt_os2_v1->achVendID, "Wine", sizeof(tt_os2_v1->achVendID) ) &&
+ opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_EBSC_TAG, NULL, NULL ))
+ {
+ TRACE( "ignoring wine bitmap-only sfnt font.\n" );
+ return FALSE;
+ }
+
+ if (opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_EBDT_TAG, NULL, NULL ) ||
+ opentype_get_table_ptr( data, size, *ttc_sfnt_v1, MS_CBDT_TAG, NULL, NULL ))
+ {
+ WARN( "unsupported sfnt font: embedded bitmap data.\n" );
+ return FALSE;
+ }
+
+ return TRUE;
+}
More information about the wine-cvs
mailing list