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freetype2
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Code Issues 4 Releases Wiki Activity

Work on preloading font outlines

This commit is contained in:
Anurag Thakur 2023-08-14 19:51:22 +05:30
parent 71f5924d25
commit d23d82d84b
2 changed files with 46 additions and 5 deletions
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11
include/freetype/freetype.h
View File

@ -2399,6 +2399,9 @@ FT_BEGIN_HEADER
* FT_OPEN_PARAMS ::
* Use the `num_params` and `params` fields.
*
* FT_OPEN_PRELOAD ::
* Preprocess the font outline to save cpu time later.
*
* @note:
* The `FT_OPEN_MEMORY`, `FT_OPEN_STREAM`, and `FT_OPEN_PATHNAME` flags
* are mutually exclusive.
@ -2408,7 +2411,7 @@ FT_BEGIN_HEADER
#define FT_OPEN_PATHNAME 0x4
#define FT_OPEN_DRIVER 0x8
#define FT_OPEN_PARAMS 0x10
#define FT_OPEN_PRELOAD 0x20
/* these constants are deprecated; use the corresponding `FT_OPEN_XXX` */
/* values instead */
@ -2572,6 +2575,12 @@ FT_BEGIN_HEADER
FT_Long face_index,
FT_Face *aface );
FT_EXPORT( FT_Error )
FT_New_Face2( FT_Library library,
const char* filepathname,
FT_Long face_index,
FT_Face *aface,
FT_UInt flags);
/**************************************************************************
*

40
src/base/ftobjs.c
View File

@ -1610,7 +1610,6 @@
{
FT_Open_Args args;
/* test for valid `library' and `aface' delayed to `FT_Open_Face' */
if ( !pathname )
return FT_THROW( Invalid_Argument );
@ -1622,6 +1621,29 @@
return ft_open_face_internal( library, &args, face_index, aface, 1 );
}
FT_EXPORT_DEF( FT_Error )
FT_New_Face2( FT_Library library,
const char* pathname,
FT_Long face_index,
FT_Face *aface,
FT_UInt flags)
{
FT_Open_Args args;
/* test for valid `library' and `aface' delayed to `FT_Open_Face' */
if ( !pathname )
return FT_THROW( Invalid_Argument );
args.flags = FT_OPEN_PATHNAME;
args.flags |= flags;
args.pathname = (char*)pathname;
args.stream = NULL;
return ft_open_face_internal( library, &args, face_index, aface, 1 );
}
#endif
@ -2540,7 +2562,11 @@
FT_UNUSED( test_mac_fonts );
#endif
if (args->flags & FT_OPEN_PRELOAD)
{
FT_TRACE0(("Requested Preload\n"));
}
/* only use lower 31 bits together with sign bit */
if ( face_index > 0 )
face_index &= 0x7FFFFFFFL;
@ -2636,7 +2662,6 @@
driver = FT_DRIVER( cur[0] );
// TODO: Check the args for a "preload" flag and act accordingly
if ( args->flags & FT_OPEN_PARAMS )
{
num_params = args->num_params;
@ -2727,7 +2752,12 @@
/* face->driver instead. */
FT_List_Add( &face->driver->faces_list, node );
// TODO: The preload logic should be performed here
if (args->flags & FT_OPEN_PRELOAD)
{
/* Preload the font here */
}
/* now allocate a glyph slot object for the face */
FT_TRACE4(( "FT_Open_Face: Creating glyph slot\n" ));
@ -2749,6 +2779,8 @@
goto Fail;
face->size = size;
// FT_Outline_Decompose here
}
}