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Properly free memory of SVG document referenced in `slot->other'. 

* include/freetype/freetype.h: Add `FT_FACE_FLAG_SVG' to indicate
the presence of an SVG table in the face.

* src/base/ftobjs.c (ft_glyphslot_init): Allocate memory for
`FT_SVG_Document' in `slot->other' if an SVG table exists in the
face.
(ft_glyphslot_clear): Clear `slot->other' only if the font doesn't
have an SVG table.
(ft_glyphslot_done): Free the memory at `slot->other' if the face
has an SVG table.

* src/base/ttsvg.c (tt_face_load_svg): Set `FT_FACE_FLAG_SVG'.
(tt_face_load_svg_doc): Don't allocate the memory.
This commit is contained in:
Moazin Khatti 2019-06-23 14:47:34 +05:00
parent 1e6cfffcb2
commit 6a39dd0b16
3 changed files with 24 additions and 5 deletions
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4
include/freetype/freetype.h
View File

@ -1206,6 +1206,9 @@ FT_BEGIN_HEADER
* altered with @FT_Set_MM_Design_Coordinates, * altered with @FT_Set_MM_Design_Coordinates,
* @FT_Set_Var_Design_Coordinates, or @FT_Set_Var_Blend_Coordinates. * @FT_Set_Var_Design_Coordinates, or @FT_Set_Var_Blend_Coordinates.
* This flag is unset by a call to @FT_Set_Named_Instance. * This flag is unset by a call to @FT_Set_Named_Instance.
*
* FT_FACE_FLAG_SVG ::
* Set if the current face has an SVG table.
*/ */
#define FT_FACE_FLAG_SCALABLE ( 1L << 0 ) #define FT_FACE_FLAG_SCALABLE ( 1L << 0 )
#define FT_FACE_FLAG_FIXED_SIZES ( 1L << 1 ) #define FT_FACE_FLAG_FIXED_SIZES ( 1L << 1 )
@ -1223,6 +1226,7 @@ FT_BEGIN_HEADER
#define FT_FACE_FLAG_TRICKY ( 1L << 13 ) #define FT_FACE_FLAG_TRICKY ( 1L << 13 )
#define FT_FACE_FLAG_COLOR ( 1L << 14 ) #define FT_FACE_FLAG_COLOR ( 1L << 14 )
#define FT_FACE_FLAG_VARIATION ( 1L << 15 ) #define FT_FACE_FLAG_VARIATION ( 1L << 15 )
#define FT_FACE_FLAG_SVG ( 1L << 16 )
/************************************************************************** /**************************************************************************

18
src/base/ftobjs.c
View File

@ -318,6 +318,15 @@
if ( !error && clazz->init_slot ) if ( !error && clazz->init_slot )
error = clazz->init_slot( slot ); error = clazz->init_slot( slot );
/* check if SVG table exists allocate the space in slot->other */
if ( slot->face->face_flags & FT_FACE_FLAG_SVG )
{
FT_SVG_Document document;
if ( FT_NEW( document ) )
goto Exit;
slot->other = document;
}
Exit: Exit:
return error; return error;
} }
@ -552,7 +561,8 @@
slot->subglyphs = NULL; slot->subglyphs = NULL;
slot->control_data = NULL; slot->control_data = NULL;
slot->control_len = 0; slot->control_len = 0;
slot->other = NULL; if ( !( slot->face->face_flags & FT_FACE_FLAG_SVG ) )
slot->other = NULL;
slot->format = FT_GLYPH_FORMAT_NONE; slot->format = FT_GLYPH_FORMAT_NONE;
slot->linearHoriAdvance = 0; slot->linearHoriAdvance = 0;
@ -570,6 +580,11 @@
FT_Memory memory = driver->root.memory; FT_Memory memory = driver->root.memory;
if ( slot->face->face_flags & FT_FACE_FLAG_SVG )
{
FT_FREE( slot->other );
}
if ( clazz->done_slot ) if ( clazz->done_slot )
clazz->done_slot( slot ); clazz->done_slot( slot );
@ -588,6 +603,7 @@
FT_FREE( slot->internal ); FT_FREE( slot->internal );
} }
} }

7
src/sfnt/ttsvg.c
View File

@ -91,6 +91,8 @@
face->svg = svg; face->svg = svg;
face->root.face_flags |= FT_FACE_FLAG_SVG;
return FT_Err_Ok; return FT_Err_Ok;
InvalidTable: InvalidTable:
@ -182,7 +184,7 @@
FT_Memory memory = face->root.memory; FT_Memory memory = face->root.memory;
Svg* svg = face->svg; Svg* svg = face->svg;
FT_SVG_Document svg_document; FT_SVG_Document svg_document = glyph->other;
/* handle svg being 0x0 situation here */ /* handle svg being 0x0 situation here */
doc_list = svg->svg_doc_list; doc_list = svg->svg_doc_list;
@ -227,9 +229,6 @@
return FT_Err_Ok; return FT_Err_Ok;
} }
if ( FT_NEW( svg_document ) )
return FT_THROW( Out_Of_Memory );
svg_document->svg_document = doc_list; svg_document->svg_document = doc_list;
svg_document->svg_document_length = doc_length; svg_document->svg_document_length = doc_length;
svg_document->metrics = glyph->face->size->metrics; svg_document->metrics = glyph->face->size->metrics;