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- fixed a leak in the Type 1 driver

Browse Source 
- updated the CFF driver to support flex opcodes
This commit is contained in:
David Turner 2000-07-07 19:47:34 +00:00
parent 607358967f
commit 9b3d1c75ad
10 changed files with 435 additions and 55 deletions
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18
CHANGES
View File

@ -1,5 +1,23 @@
LATEST CHANGES
- found a memory leak in the "type1" driver
- incorporated Tom's patches to support flex operators correctly
in OpenType/CFF fonts.. Now all I need is to support pure CFF
and CEF fonts to be done with this driver.. :-)
- added the Windows FNT/FON driver in "src/winfonts". For now,
it always "simulates" a Unicode charmap, so it shouldn't be
considered completed right now..
It's there to be more a proof of concept than anything else
anyway. The driver is a single C source file, that compiles
to 3 Kb of code..
I'm still working on the PCF/BDF drivers.. but I'm too lazy
to finish them now..
- CHANGES TO THE HIGH-LEVEL API
o FT_Get_Kerning has a new parameter that allows you to select

1
include/freetype/config/ftmodule.h
View File

@ -7,3 +7,4 @@ FT_USE_MODULE(ft_smooth_renderer_class)
FT_USE_MODULE(tt_driver_class)
FT_USE_MODULE(t1_driver_class)
FT_USE_MODULE(t1z_driver_class)
FT_USE_MODULE(winfnt_driver_class)

8
include/freetype/ftoutln.h
View File

@ -96,6 +96,11 @@
FT_Int numContours,
FT_Outline* outline );
FT_EXPORT_DEF(FT_Error) FT_Outline_New_Internal( FT_Memory memory,
FT_UInt numPoints,
FT_Int numContours,
FT_Outline* outline );
/*************************************************************************/
/* */
@ -129,6 +134,9 @@
FT_EXPORT_DEF(FT_Error) FT_Outline_Done( FT_Library library,
FT_Outline* outline );
FT_EXPORT_DEF( FT_Error ) FT_Outline_Done_Internal( FT_Memory memory,
FT_Outline* outline );
/*************************************************************************/
/* */
/* <Function> */

17
include/freetype/internal/ftstream.h
View File

@ -175,6 +175,10 @@ typedef struct FT_Frame_Field_
#define GET_ULong() FT_GET_MACRO( FT_Get_Long, FT_ULong )
#define GET_Tag4() FT_GET_MACRO( FT_Get_Long, FT_ULong )
#define GET_ShortLE() FT_GET_MACRO( FT_Get_ShortLE, FT_Short )
#define GET_UShortLE() FT_GET_MACRO( FT_Get_ShortLE, FT_UShort )
#define GET_LongLE() FT_GET_MACRO( FT_Get_LongLE, FT_Short )
#define GET_ULongLE() FT_GET_MACRO( FT_Get_LongLE, FT_Short )
#define FT_READ_MACRO( func, type, var ) \
( var = (type)func( stream, &error ), \
@ -189,6 +193,10 @@ typedef struct FT_Frame_Field_
#define READ_Long( var ) FT_READ_MACRO( FT_Read_Long, FT_Long, var )
#define READ_ULong( var ) FT_READ_MACRO( FT_Read_Long, FT_ULong, var )
#define READ_ShortLE( var ) FT_READ_MACRO( FT_Read_ShortLE, FT_Short, var )
#define READ_UShortLE( var ) FT_READ_MACRO( FT_Read_ShortLE, FT_UShort, var )
#define READ_LongLE( var ) FT_READ_MACRO( FT_Read_LongLE, FT_Long, var )
#define READ_ULongLE( var ) FT_READ_MACRO( FT_Read_LongLE, FT_ULong, var )
BASE_DEF(void) FT_New_Memory_Stream( FT_Library library,
@ -234,6 +242,9 @@ typedef struct FT_Frame_Field_
BASE_DEF(FT_Long) FT_Get_Long( FT_Stream stream );
BASE_DEF(FT_Short) FT_Get_ShortLE( FT_Stream stream );
BASE_DEF(FT_Long) FT_Get_LongLE( FT_Stream stream );
BASE_DEF(FT_Char) FT_Read_Char( FT_Stream stream,
@ -248,6 +259,12 @@ typedef struct FT_Frame_Field_
BASE_DEF(FT_Long) FT_Read_Long( FT_Stream stream,
FT_Error* error );
BASE_DEF(FT_Short) FT_Read_ShortLE( FT_Stream stream,
FT_Error* error );
BASE_DEF(FT_Long) FT_Read_LongLE( FT_Stream stream,
FT_Error* error );
BASE_DEF(FT_Error) FT_Read_Fields( FT_Stream stream,
const FT_Frame_Field* fields,
void* structure );

8
src/base/ftobjs.c
View File

@ -1937,9 +1937,9 @@
{
metrics->x_scale = FT_DivFix( dim_x, face->units_per_EM );
metrics->y_scale = FT_DivFix( dim_y, face->units_per_EM );
}
ft_recompute_scaled_metrics( face, metrics );
ft_recompute_scaled_metrics( face, metrics );
}
if ( clazz->set_char_sizes )
error = clazz->set_char_sizes( face->size,
@ -2014,10 +2014,10 @@
metrics->y_scale = FT_DivFix( metrics->y_ppem << 6,
face->units_per_EM );
ft_recompute_scaled_metrics( face, metrics );
}
ft_recompute_scaled_metrics( face, metrics );
if ( clazz->set_pixel_sizes )
error = clazz->set_pixel_sizes( face->size,
pixel_width,

99
src/base/ftoutln.c
View File

@ -270,6 +270,39 @@
}
FT_EXPORT_FUNC( FT_Error ) FT_Outline_New_Internal( FT_Memory memory,
FT_UInt numPoints,
FT_Int numContours,
FT_Outline* outline )
{
FT_Error error;
if ( !outline )
return FT_Err_Invalid_Argument;
*outline = null_outline;
if ( ALLOC_ARRAY( outline->points, numPoints * 2L, FT_Pos ) ||
ALLOC_ARRAY( outline->tags, numPoints, FT_Byte ) ||
ALLOC_ARRAY( outline->contours, numContours, FT_UShort ) )
goto Fail;
outline->n_points = (FT_UShort)numPoints;
outline->n_contours = (FT_Short)numContours;
outline->flags |= ft_outline_owner;
return FT_Err_Ok;
Fail:
outline->flags |= ft_outline_owner;
FT_Outline_Done_Internal( memory, outline );
return error;
}
/*************************************************************************/
/* */
/* <Function> */
@ -302,39 +335,16 @@
/* The reason why this function takes a `library' parameter is simply */
/* to use the library's memory allocator. */
/* */
BASE_FUNC( FT_Error ) FT_Outline_New( FT_Library library,
FT_UInt numPoints,
FT_Int numContours,
FT_Outline* outline )
FT_EXPORT_FUNC( FT_Error ) FT_Outline_New( FT_Library library,
FT_UInt numPoints,
FT_Int numContours,
FT_Outline* outline )
{
FT_Error error;
FT_Memory memory;
if ( !outline )
return FT_Err_Invalid_Argument;
*outline = null_outline;
memory = library->memory;
if ( ALLOC_ARRAY( outline->points, numPoints * 2L, FT_Pos ) ||
ALLOC_ARRAY( outline->tags, numPoints, FT_Byte ) ||
ALLOC_ARRAY( outline->contours, numContours, FT_UShort ) )
goto Fail;
outline->n_points = (FT_UShort)numPoints;
outline->n_contours = (FT_Short)numContours;
outline->flags |= ft_outline_owner;
return FT_Err_Ok;
Fail:
outline->flags |= ft_outline_owner;
FT_Outline_Done( library, outline );
return error;
return FT_Outline_New_Internal( library->memory, numPoints,
numContours, outline );
}
/*************************************************************************/
/* */
@ -414,12 +424,10 @@
/* The reason why this function takes an `outline' parameter is */
/* simply to use FT_Free(). */
/* */
BASE_FUNC( FT_Error ) FT_Outline_Done( FT_Library library,
FT_Outline* outline )
FT_EXPORT_FUNC( FT_Error ) FT_Outline_Done_Internal( FT_Memory memory,
FT_Outline* outline )
{
FT_Memory memory = library->memory;
if ( outline )
{
if ( outline->flags & ft_outline_owner )
@ -435,7 +443,14 @@
else
return FT_Err_Invalid_Argument;
}
FT_EXPORT_FUNC( FT_Error ) FT_Outline_Done( FT_Library library,
FT_Outline* outline )
{
return FT_Outline_Done_Internal( library->memory, outline );
}
/*************************************************************************/
/* */
@ -463,8 +478,8 @@
/* <MT-Note> */
/* Yes. */
/* */
BASE_FUNC( void ) FT_Outline_Get_CBox( FT_Outline* outline,
FT_BBox* cbox )
FT_EXPORT_FUNC( void ) FT_Outline_Get_CBox( FT_Outline* outline,
FT_BBox* cbox )
{
FT_Pos xMin, yMin, xMax, yMax;
@ -529,9 +544,9 @@
/* <MT-Note> */
/* Yes. */
/* */
BASE_FUNC( void ) FT_Outline_Translate( FT_Outline* outline,
FT_Pos xOffset,
FT_Pos yOffset )
FT_EXPORT_FUNC( void ) FT_Outline_Translate( FT_Outline* outline,
FT_Pos xOffset,
FT_Pos yOffset )
{
FT_UShort n;
FT_Vector* vec = outline->points;
@ -562,7 +577,7 @@
/* This functions toggles the bit flag `ft_outline_reverse_fill' in */
/* the outline's `flags' field. */
/* */
BASE_FUNC( void ) FT_Outline_Reverse( FT_Outline* outline )
FT_EXPORT_FUNC( void ) FT_Outline_Reverse( FT_Outline* outline )
{
FT_UShort n;
FT_Int first, last;

129
src/base/ftstream.c
View File

@ -301,6 +301,24 @@
}
BASE_FUNC( FT_Short ) FT_Get_ShortLE( FT_Stream stream )
{
FT_Byte* p;
FT_Short result;
FT_Assert( stream && stream->cursor );
result = 0;
p = stream->cursor;
if ( p + 1 < stream->limit )
result = NEXT_ShortLE( p );
stream->cursor = p;
return result;
}
BASE_FUNC( FT_Long ) FT_Get_Offset( FT_Stream stream )
{
FT_Byte* p;
@ -335,6 +353,23 @@
}
BASE_FUNC( FT_Long ) FT_Get_LongLE( FT_Stream stream )
{
FT_Byte* p;
FT_Long result;
FT_Assert( stream && stream->cursor );
result = 0;
p = stream->cursor;
if ( p + 3 < stream->limit )
result = NEXT_LongLE( p );
stream->cursor = p;
return result;
}
BASE_FUNC( FT_Char ) FT_Read_Char( FT_Stream stream,
FT_Error* error )
{
@ -417,6 +452,52 @@
}
BASE_FUNC( FT_Short ) FT_Read_ShortLE( FT_Stream stream,
FT_Error* error )
{
FT_Byte reads[2];
FT_Byte* p = 0;
FT_Short result = 0;
FT_Assert( stream );
*error = FT_Err_Ok;
if ( stream->pos + 1 < stream->size )
{
if ( stream->read )
{
if ( stream->read( stream, stream->pos, reads, 2L ) != 2L )
goto Fail;
p = reads;
}
else
{
p = stream->base + stream->pos;
}
if ( p )
result = NEXT_ShortLE( p );
}
else
goto Fail;
stream->pos += 2;
return result;
Fail:
*error = FT_Err_Invalid_Stream_Operation;
FT_ERROR(( "FT_Read_Short:" ));
FT_ERROR(( " invalid i/o; pos = 0x%lx, size = 0x%lx\n",
stream->pos, stream->size ));
return 0;
}
BASE_FUNC( FT_Long ) FT_Read_Offset( FT_Stream stream,
FT_Error* error )
{
@ -509,6 +590,54 @@
}
BASE_FUNC( FT_Long ) FT_Read_LongLE( FT_Stream stream,
FT_Error* error )
{
FT_Byte reads[4];
FT_Byte* p = 0;
FT_Long result = 0;
FT_Assert( stream );
*error = FT_Err_Ok;
if ( stream->pos + 3 < stream->size )
{
if ( stream->read )
{
if ( stream->read( stream, stream->pos, reads, 4L ) != 4L )
goto Fail;
p = reads;
}
else
{
p = stream->base + stream->pos;
}
if ( p )
result = NEXT_LongLE( p );
}
else
goto Fail;
stream->pos += 4;
return result;
Fail:
FT_ERROR(( "FT_Read_Long:" ));
FT_ERROR(( " invalid i/o; pos = 0x%lx, size = 0x%lx\n",
stream->pos, stream->size ));
*error = FT_Err_Invalid_Stream_Operation;
return 0;
}
BASE_FUNC( FT_Error ) FT_Read_Fields( FT_Stream stream,
const FT_Frame_Field* fields,
void* structure )

207
src/cff/t2gload.c
View File

@ -464,19 +464,17 @@
FT_Pos x,
FT_Pos y )
{
FT_Error error;
/* test whether we are building a new contour */
if ( !builder->path_begun )
{
FT_Error error;
builder->path_begun = 1;
error = add_contour( builder );
if ( error )
return error;
if ( !error )
error = add_point1( builder, x, y );
}
return add_point1( builder, x, y );
return error;
}
@ -901,7 +899,7 @@
break;
case t2_op_hmoveto:
FT_TRACE4(( " vmoveto" ));
FT_TRACE4(( " hmoveto" ));
close_contour( builder );
builder->path_begun = 0;
@ -1152,6 +1150,7 @@
}
break;
case t2_op_rcurveline:
{
FT_Int num_curves = ( num_args - 2 ) / 6;
@ -1192,6 +1191,198 @@
}
break;
case t2_op_hflex1:
{
FT_Pos start_y;
FT_TRACE4(( " hflex1" ));
args = stack;
/* Adding five more points; 4 control points, 1 on curve point. */
if (start_point ( builder, x, y ) || check_points ( builder, 5 ) )
goto Memory_Error;
/* Record the starting point's y postion for later use */
start_y = y;
/* first control point */
x += args[0];
y += args[1];
add_point( builder, x, y, 0 );
/* second control point */
x += args[2];
y += args[3];
add_point( builder, x, y, 0 );
/* join point; on curve, with y-value the same as the last */
/* control point's y-value */
x += args[4];
add_point( builder, x, y, 1 );
/* third control point, with y-value the same as the join */
/* point's y-value */
x += args[5];
add_point( builder, x, y, 0 );
/* fourth control point */
x += args[6];
y += args[7];
add_point( builder, x, y, 0 );
/* ending point, with y-value the same as the start */
/* point's y-value. we don't add this point, though. */
x += args[8];
y = start_y;
args = stack;
break;
}
case t2_op_hflex:
{
FT_Pos start_y;
FT_TRACE4(( " hflex" ));
args = stack;
/* Adding five more points; 4 control points, 1 on curve point. */
if (start_point ( builder, x, y ) || check_points ( builder, 5 ) )
goto Memory_Error;
/* Record the starting point's y postion for later use */
start_y = y;
/* first control point */
x += args[0];
add_point( builder, x, y, 0 );
/* second control point */
x += args[1];
y += args[2];
add_point( builder, x, y, 0 );
/* join point; on curve, with y-value the same as the last */
/* control point's y-value */
x += args[3];
add_point( builder, x, y, 1 );
/* third control point, with y-value the same as the join */
/* point's y-value */
x += args[4];
add_point( builder, x, y, 0 );
/* fourth control point */
x += args[5];
y = start_y;
add_point( builder, x, y, 0 );
/* ending point, with y-value the same as the start point's */
/* y-value we don't add this point, though. */
x += args[6];
args = stack;
break;
}
case t2_op_flex1:
{
FT_Pos start_x, start_y; /* record start x,y values for alter use */
FT_Int dx = 0, dy = 0; /* used in hort./vert. algorithm below */
FT_Int hort_flag, count;
FT_TRACE4(( " flex1" ));
/* Adding five more points; 4 control points, 1 on curve point. */
if (start_point ( builder, x, y ) || check_points ( builder, 5 ) )
goto Memory_Error;
/* Record the starting point's x,y postion for later use */
start_x = x;
start_y = y;
/* XXXX: figure out if this is supposed to be a horizontal or */
/* vertical flex. The Type 2 specification is vague... */
args = stack;
/* grab up to the last argument */
while ( args < decoder->top - 1)
{
dx += args[0];
dy += args[1];
args += 2;
}
/* rewind */
args = stack;
if ( dx < 0 ) dx = -dx;
if ( dy < 0 ) dy = -dy;
/* strange test, but here it is... */
hort_flag = (dx > dy);
for ( count = 5; count > 0; count-- )
{
x += args[0];
y += args[1];
add_point( builder, x, y, (FT_Bool)(count == 3) );
args += 2;
}
if (hort_flag)
{
x += args[0];
y = start_y;
}
else
{
x = start_x;
y += args[0];
}
args = stack;
break;
}
case t2_op_flex:
{
FT_UInt count;
FT_TRACE4(( " flex" ));
if (start_point ( builder, x, y ) || check_points ( builder, 5 ) )
goto Memory_Error;
args = stack;
for ( count = 5; count > 0; count-- )
{
x += args[0];
y += args[1];
add_point( builder, x, y, (FT_Bool)(count == 3) );
args += 2;
}
x += args[0];
y += args[1];
args = stack;
}
break;
case t2_op_endchar:
FT_TRACE4(( " endchar" ));

2
src/cid/cidload.c
View File

@ -239,7 +239,7 @@
const CID_Field_Rec t1_field_records[] =
{
#include <cidtokens.h>
{ 0 }
{ 0, 0, 0, 0, 0, 0, 0, 0 }
};

1
src/type1/t1tokens.c
View File

@ -373,6 +373,7 @@
return T1_Err_Ok;
Fail:
FREE( tokzer->base );
FREE( tokzer );
return error;
}