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freetype2
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Code Issues 4 Releases Wiki Activity

bugfixes in the Type1 drivers

This commit is contained in:
David Turner 2000-06-23 05:02:13 +00:00
parent 5b58f5e374
commit c31286153a
7 changed files with 222 additions and 229 deletions
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10
src/cid/cidobjs.c
View File

@ -133,14 +133,10 @@
psnames = (PSNames_Interface*)face->psnames;
if ( !psnames )
{
/* look-up the PSNames driver */
FT_Module psnames_module;
psnames = (PSNames_Interface*)
FT_Get_Module_Interface( FT_FACE_LIBRARY(face), "psnames" );
psnames_module = FT_Get_Module( face->root.driver->root.library,
"psnames" );
if (psnames_module)
face->psnames = (PSNames_Interface*)
(psnames_module->clazz->module_interface);
face->psnames = psnames;
}
/* open the tokenizer; this will also check the font format */

352
src/truetype/ttgload.c
View File

@ -195,7 +195,7 @@
/*************************************************************************/
/* */
/* <Function> */
/* Load_Simple_Glyph */
/* TT_Load_Simple_Glyph */
/* */
/* <Description> */
/* Loads a simple (i.e, non-composite) glyph. This function is used */
@ -203,18 +203,16 @@
/* glyphs elements will be loaded with this routine. */
/* */
static
FT_Error Load_Simple( TT_Loader* load,
FT_UInt byte_count,
FT_Int n_contours,
FT_Bool debug )
FT_Error TT_Load_Simple_Glyph( TT_Loader* load,
FT_UInt byte_count,
FT_Int n_contours )
{
FT_Error error;
FT_Stream stream = load->stream;
FT_GlyphLoader* gloader = load->gloader;
FT_Outline* outline;
TT_GlyphZone* zone = &load->zone;
TT_Face face = load->face;
TT_Face face = (TT_Face)load->face;
TT_GlyphSlot slot = (TT_GlyphSlot)load->glyph;
FT_UShort n_ins;
FT_Int n, n_points;
@ -242,8 +240,10 @@
/* reading the bytecode instructions */
slot->control_len = 0;
slot->control_data = 0;
n_ins = GET_UShort();
load->face->root.glyph->control_len = n_ins;
FT_TRACE5(( " Instructions size: %d\n", n_ins ));
@ -263,14 +263,13 @@
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
if ( ( load->load_flags &
( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING ) ) == 0 )
( FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING ) ) == 0 &&
load->instructions )
{
MEM_Copy( load->exec->glyphIns, stream->cursor, n_ins );
error = TT_Set_CodeRange( load->exec, tt_coderange_glyph,
load->exec->glyphIns, n_ins );
if ( error )
goto Fail;
slot->control_len = n_ins;
slot->control_data = load->instructions;
MEM_Copy( load->instructions, stream->cursor, n_ins );
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
@ -352,6 +351,46 @@
FORGET_Frame();
/* clear the touch tags */
for ( n = 0; n < n_points; n++ )
outline->tags[n] &= FT_Curve_Tag_On;
outline->n_points = n_points;
outline->n_contours = n_contours;
return error;
Fail:
FORGET_Frame();
return error;
}
/*************************************************************************/
/* */
/* <Function> */
/* TT_Process_Simple_Glyph */
/* */
/* <Description> */
/* Once a simple glyph has been loaded, it needs to be processed. */
/* Usually, this means scaling and hinting through bytecode */
/* interpretation.. */
/* */
static
FT_Error TT_Process_Simple_Glyph( TT_Loader* load,
FT_Bool debug )
{
FT_GlyphLoader* gloader = load->gloader;
FT_Outline* outline = &gloader->current.outline;
FT_UInt n_points = outline->n_points;
FT_UInt n_ins;
TT_GlyphZone* zone = &load->zone;
FT_Error error = FT_Err_Ok;
n_ins = load->glyph->control_len;
/* add shadow points */
/* Now add the two shadow points at n and n + 1. */
@ -361,7 +400,6 @@
FT_Vector* pp1;
FT_Vector* pp2;
/* pp1 = xMin - lsb */
pp1 = outline->points + n_points;
pp1->x = load->bbox.xMin - load->left_bearing;
@ -372,10 +410,6 @@
pp2->x = pp1->x + load->advance;
pp2->y = 0;
/* clear the touch tags */
for ( n = 0; n < n_points; n++ )
outline->tags[n] &= FT_Curve_Tag_On;
outline->tags[n_points ] = 0;
outline->tags[n_points + 1] = 0;
}
@ -383,8 +417,6 @@
/* Note that we return two more points that are not */
/* part of the glyph outline. */
outline->n_points = n_points;
outline->n_contours = n_contours;
n_points += 2;
/* set up zone for hinting */
@ -395,8 +427,8 @@
{
FT_Vector* vec = zone->cur;
FT_Vector* limit = vec + n_points;
FT_Fixed x_scale = load->size->root.metrics.x_scale;
FT_Fixed y_scale = load->size->root.metrics.y_scale;
FT_Fixed x_scale = load->size->metrics.x_scale;
FT_Fixed y_scale = load->size->metrics.y_scale;
/* first scale the glyph points */
for ( ; vec < limit; vec++ )
@ -424,6 +456,10 @@
/* now consider hinting */
if ( n_ins > 0 )
{
error = TT_Set_CodeRange( load->exec, tt_coderange_glyph,
load->exec->glyphIns, n_ins );
if ( error ) goto Exit;
load->exec->is_composite = FALSE;
load->exec->pedantic_hinting = (FT_Bool)(load->load_flags &
FT_LOAD_PEDANTIC);
@ -432,7 +468,9 @@
error = TT_Run_Context( load->exec, debug );
if ( error && load->exec->pedantic_hinting )
return error;
goto Exit;
error = FT_Err_Ok; /* ignore bytecode errors in non-pedantic mode */
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
}
@ -444,14 +482,113 @@
load->pp2 = zone->cur[n_points - 1];
}
return FT_Err_Ok;
Fail:
FORGET_Frame();
Exit:
return error;
}
/*************************************************************************/
/* */
/* <Function> */
/* TT_Load_Composite_Glyph */
/* */
/* <Description> */
/* Loads a composite glyph. */
/* */
static
FT_Error TT_Load_Composite_Glyph( TT_Loader* loader,
FT_UInt byte_count )
{
FT_Error error;
FT_Stream stream = loader->stream;
FT_GlyphLoader* gloader = loader->gloader;
FT_SubGlyph* subglyph;
FT_UInt num_subglyphs;
if ( ACCESS_Frame( byte_count ) )
goto Fail;
num_subglyphs = 0;
do
{
FT_Fixed xx, xy, yy, yx;
/* check that we can load a new subglyph */
error = FT_GlyphLoader_Check_Subglyphs( gloader, num_subglyphs+1 );
if (error) goto Fail;
subglyph = gloader->current.subglyphs + num_subglyphs;
subglyph->arg1 = subglyph->arg2 = 0;
subglyph->flags = GET_UShort();
subglyph->index = GET_UShort();
/* read arguments */
if ( subglyph->flags & ARGS_ARE_WORDS )
{
subglyph->arg1 = GET_Short();
subglyph->arg2 = GET_Short();
}
else
{
subglyph->arg1 = GET_Char();
subglyph->arg2 = GET_Char();
}
/* read transform */
xx = yy = 0x10000L;
xy = yx = 0;
if ( subglyph->flags & WE_HAVE_A_SCALE )
{
xx = (FT_Fixed)GET_Short() << 2;
yy = xx;
}
else if ( subglyph->flags & WE_HAVE_AN_XY_SCALE )
{
xx = (FT_Fixed)GET_Short() << 2;
yy = (FT_Fixed)GET_Short() << 2;
}
else if ( subglyph->flags & WE_HAVE_A_2X2 )
{
xx = (FT_Fixed)GET_Short() << 2;
xy = (FT_Fixed)GET_Short() << 2;
yx = (FT_Fixed)GET_Short() << 2;
yy = (FT_Fixed)GET_Short() << 2;
}
subglyph->transform.xx = xx;
subglyph->transform.xy = xy;
subglyph->transform.yx = yx;
subglyph->transform.yy = yy;
num_subglyphs++;
}
while (subglyph->flags & MORE_COMPONENTS);
gloader->current.num_subglyphs = num_subglyphs;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
{
/* we must undo the ACCESS_Frame in order to point to the */
/* composite instructions, if we find some. */
/* we will process them later... */
/* */
loader->ins_pos = FILE_Pos() + stream->cursor - stream->limit;
}
#endif
FORGET_Frame();
Fail:
return error;
}
/*************************************************************************/
/* */
/* <Function> */
@ -467,9 +604,9 @@
{
FT_Stream stream = loader->stream;
FT_Error error;
TT_Face face = loader->face;
TT_Face face = (TT_Face)loader->face;
FT_ULong offset;
FT_Int num_subglyphs = 0, contours_count;
FT_Int contours_count;
FT_UInt index, num_points, num_contours, count;
FT_Fixed x_scale, y_scale;
FT_ULong ins_offset;
@ -493,8 +630,8 @@
y_scale = 0x10000L;
if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
{
x_scale = loader->size->root.metrics.x_scale;
y_scale = loader->size->root.metrics.y_scale;
x_scale = loader->size->metrics.x_scale;
y_scale = loader->size->metrics.y_scale;
}
/* get horizontal metrics */
@ -589,14 +726,17 @@
error = FT_GlyphLoader_Check_Points( gloader, 0, contours_count );
if (error) goto Fail;
error = TT_Load_Simple_Glyph( loader, count, contours_count );
if (error) goto Fail;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
error = Load_Simple( loader,
count,
contours_count,
(FT_Bool)( loader->size &&
loader->size->debug ) );
{
TT_Size size = (TT_Size)loader->size;
error = TT_Process_Simple_Glyph( loader,
(FT_Bool)( size && size->debug ) );
}
#else
error = Load_Simple( loader, count, contours_count, 0 );
error = Process_Simple_Glyph( loader, 0 );
#endif
if ( error ) goto Fail;
@ -613,89 +753,16 @@
/* otherwise, load a composite! */
else
{
TT_GlyphSlot glyph = (TT_GlyphSlot)loader->glyph;
FT_UInt start_point, start_contour;
/* for each subglyph, read composite header */
TT_GlyphSlot glyph = loader->glyph;
FT_SubGlyph* subglyph;
FT_UInt num_base_subgs;
FT_UInt start_point, start_contour;
start_point = gloader->base.outline.n_points;
start_contour = gloader->base.outline.n_contours;
if ( ACCESS_Frame( count ) )
goto Fail;
num_subglyphs = 0;
do
{
FT_Fixed xx, xy, yy, yx;
/* check that we can load a new subglyph */
error = FT_GlyphLoader_Check_Subglyphs( gloader, num_subglyphs+1 );
if (error) goto Fail;
subglyph = gloader->current.subglyphs + num_subglyphs;
subglyph->arg1 = subglyph->arg2 = 0;
subglyph->flags = GET_UShort();
subglyph->index = GET_UShort();
/* read arguments */
if ( subglyph->flags & ARGS_ARE_WORDS )
{
subglyph->arg1 = GET_Short();
subglyph->arg2 = GET_Short();
}
else
{
subglyph->arg1 = GET_Char();
subglyph->arg2 = GET_Char();
}
/* read transform */
xx = yy = 0x10000L;
xy = yx = 0;
if ( subglyph->flags & WE_HAVE_A_SCALE )
{
xx = (FT_Fixed)GET_Short() << 2;
yy = xx;
}
else if ( subglyph->flags & WE_HAVE_AN_XY_SCALE )
{
xx = (FT_Fixed)GET_Short() << 2;
yy = (FT_Fixed)GET_Short() << 2;
}
else if ( subglyph->flags & WE_HAVE_A_2X2 )
{
xx = (FT_Fixed)GET_Short() << 2;
xy = (FT_Fixed)GET_Short() << 2;
yx = (FT_Fixed)GET_Short() << 2;
yy = (FT_Fixed)GET_Short() << 2;
}
subglyph->transform.xx = xx;
subglyph->transform.xy = xy;
subglyph->transform.yx = yx;
subglyph->transform.yy = yy;
num_subglyphs++;
}
while (subglyph->flags & MORE_COMPONENTS);
gloader->current.num_subglyphs = num_subglyphs;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
{
/* we must undo the ACCESS_Frame in order to point to the */
/* composite instructions, if we find some. */
/* we will process them later... */
/* */
ins_offset = FILE_Pos() + stream->cursor - stream->limit;
}
#endif
FORGET_Frame();
error = TT_Load_Composite_Glyph( loader, count );
if (error) goto Fail;
/* if the flag FT_LOAD_NO_RECURSE is set, we return the subglyph */
/* `as is' in the glyph slot (the client application will be */
@ -721,10 +788,13 @@
/*********************************************************************/
/* Now, read each subglyph independently.. */
{
FT_Int n, num_base_points, num_new_points;
num_base_subgs = gloader->base.num_subglyphs;
FT_Int n, num_base_points, num_new_points;
FT_SubGlyph* subglyph;
FT_UInt num_subglyphs = gloader->current.num_subglyphs;
FT_UInt num_base_subgs = gloader->base.num_subglyphs;
FT_GlyphLoader_Add( gloader );
for ( n = 0; n < num_subglyphs; n++ )
@ -838,6 +908,7 @@
if ( num_subglyphs > 0 &&
loader->exec &&
loader->ins_pos > 0 &&
subglyph->flags & WE_HAVE_INSTR )
{
FT_UShort n_ins;
@ -848,28 +919,30 @@
/* read size of instructions */
if ( FILE_Seek( ins_offset ) ||
READ_UShort(n_ins) )
if ( FILE_Seek( loader->ins_pos ) ||
READ_UShort(n_ins) )
goto Fail;
FT_TRACE5(( " Instructions size = %d\n", n_ins ));
/* in some fonts ?? */
if (n_ins == 0xFFFF)
n_ins = 0;
/* check it */
if ( n_ins > face->max_profile.maxSizeOfInstructions )
{
FT_TRACE0(( "Too many instructions in composite glyph %ld\n",
subglyph->index ));
FT_TRACE0(( "Too many instructions (%d) in composite glyph %ld\n",
n_ins, subglyph->index ));
return TT_Err_Too_Many_Ins;
}
if ( exec )
{
/* XXX */
}
/* read the instructions */
if ( FILE_Read( exec->glyphIns, n_ins ) )
goto Fail;
glyph->control_data = exec->glyphIns;
glyph->control_len = n_ins;
error = TT_Set_CodeRange( exec,
tt_coderange_glyph,
exec->glyphIns,
@ -916,7 +989,7 @@
exec->pedantic_hinting =
(FT_Bool)(loader->load_flags & FT_LOAD_PEDANTIC);
error = TT_Run_Context( exec, loader->size->debug );
error = TT_Run_Context( exec, ((TT_Size)loader->size)->debug );
if ( error && exec->pedantic_hinting )
goto Fail;
}
@ -948,10 +1021,10 @@
FT_UInt glyph_index )
{
FT_BBox bbox;
TT_Face face = loader->face;
TT_Face face = (TT_Face)loader->face;
FT_Fixed x_scale, y_scale;
TT_GlyphSlot glyph = loader->glyph;
TT_Size size = loader->size;
TT_Size size = (TT_Size)loader->size;
x_scale = 0x10000L;
y_scale = 0x10000L;
@ -1267,6 +1340,7 @@
return TT_Err_Could_Not_Find_Context;
TT_Load_Context( loader.exec, face, size );
loader.instructions = loader.exec->glyphIns;
/* load default graphics state - if needed */
if ( size->GS.instruct_control & 2 )
@ -1285,12 +1359,12 @@
loader.load_flags = load_flags;
loader.face = face;
loader.size = size;
loader.glyph = glyph;
loader.face = (FT_Face)face;
loader.size = (FT_Size)size;
loader.glyph = (FT_GlyphSlot)glyph;
loader.stream = stream;
loader.glyf_offset = FILE_Pos();
loader.glyf_offset = FILE_Pos();
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER

33
src/truetype/ttgload.h
View File

@ -29,39 +29,6 @@
extern "C" {
#endif
typedef struct TT_Loader_
{
TT_Face face;
TT_Size size;
TT_GlyphSlot glyph;
FT_GlyphLoader* gloader;
FT_ULong load_flags;
FT_UInt glyph_index;
FT_Stream stream;
FT_Int byte_len;
FT_BBox bbox;
FT_Int left_bearing;
FT_Int advance;
FT_Bool preserve_pps;
FT_Vector pp1;
FT_Vector pp2;
FT_ULong glyf_offset;
/* the zone where we load our glyphs */
TT_GlyphZone base;
TT_GlyphZone zone;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
TT_ExecContext exec;
FT_Byte* instructions;
#endif
} TT_Loader;
LOCAL_DEF
void TT_Get_Metrics( TT_HoriHeader* header,

1
src/truetype/ttobjs.c
View File

@ -334,7 +334,6 @@
{
FT_Library library = face->root.driver->root.library;
face->interpreter = (TT_Interpreter)
library->debug_hooks[FT_DEBUG_HOOK_TRUETYPE];
if ( !face->interpreter )

48
src/truetype/ttobjs.h
View File

@ -106,44 +106,6 @@
} TT_GraphicsState;
/************************************************************************
*
* <Struct>
* TT_GlyphZone
*
* <Description>
* A glyph zone is used to load, scale and hint glyph outline
* coordinates.
*
* <Fields>
* memory :: handle to memory manager
* max_points :: max size in points of zone
* max_contours :: max size in contours of zone
* n_points :: current number of points in zone
* n_contours :: current number of contours in zone
* org :: original glyph coordinates (font units/scaled)
* cur :: current glyph coordinates (scaled/hinted)
* tags :: point control tags
* contours :: contour end points
*
***********************************************************************/
typedef struct TT_GlyphZone_
{
FT_Memory memory;
FT_UShort max_points;
FT_UShort max_contours;
FT_UShort n_points; /* number of points in zone */
FT_Short n_contours; /* number of contours */
FT_Vector* org; /* original point coordinates */
FT_Vector* cur; /* current point coordinates */
FT_Byte* tags; /* current touch flags */
FT_UShort* contours; /* contour end points */
} TT_GlyphZone;
LOCAL_DEF void TT_Done_GlyphZone( TT_GlyphZone* zone );
LOCAL_DEF FT_Error TT_New_GlyphZone( FT_Memory memory,
@ -335,16 +297,6 @@
} TT_Size_Metrics;
/*************************************************************************/
/* */
/* FreeType execution context type. */
/* */
/* This is a forward declaration; the full specification is in the file */
/* `ttinterp.h'. */
/* */
typedef struct TT_ExecContextRec_* TT_ExecContext;
/***********************************************************************/
/* */
/* TrueType size class. */

3
src/type1/t1objs.c
View File

@ -261,8 +261,9 @@
{
psnames = (PSNames_Interface*)
FT_Get_Module_Interface( FT_FACE_LIBRARY(face), "psnames" );
face->psnames = psnames;
}
face->psnames = psnames;
/* open the tokenizer, this will also check the font format */
error = New_Tokenizer( stream, &tokenizer );

4
src/type1z/t1objs.c
View File

@ -141,9 +141,13 @@
psnames = (PSNames_Interface*)face->psnames;
if (!psnames)
{
psnames = (PSNames_Interface*)
FT_Get_Module_Interface( FT_FACE_LIBRARY(face), "psnames" );
face->psnames = psnames;
}
/* open the tokenizer, this will also check the font format */
error = T1_Open_Face( face );
if (error) goto Exit;