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Diffstat (limited to 'src/truetype/ttgxvar.c')
-rw-r--r--src/truetype/ttgxvar.c935
1 files changed, 738 insertions, 197 deletions
diff --git a/src/truetype/ttgxvar.c b/src/truetype/ttgxvar.c
index 7899d36..2b12483 100644
--- a/src/truetype/ttgxvar.c
+++ b/src/truetype/ttgxvar.c
@@ -4,7 +4,7 @@
/* */
/* TrueType GX Font Variation loader */
/* */
-/* Copyright 2004-2013 by */
+/* Copyright 2004-2015 by */
/* David Turner, Robert Wilhelm, Werner Lemberg, and George Williams. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -20,7 +20,7 @@
/* */
/* Apple documents the `fvar', `gvar', `cvar', and `avar' tables at */
/* */
- /* http://developer.apple.com/fonts/TTRefMan/RM06/Chap6[fgca]var.html */
+ /* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6[fgca]var.html */
/* */
/* The documentation for `fvar' is inconsistent. At one point it says */
/* that `countSizePairs' should be 3, at another point 2. It should */
@@ -60,9 +60,9 @@
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
-#define FT_Stream_FTell( stream ) \
+#define FT_Stream_FTell( stream ) \
(FT_ULong)( (stream)->cursor - (stream)->base )
-#define FT_Stream_SeekSet( stream, off ) \
+#define FT_Stream_SeekSet( stream, off ) \
( (stream)->cursor = (stream)->base + (off) )
@@ -96,8 +96,8 @@
#define ALL_POINTS (FT_UShort*)~(FT_PtrDist)0
-#define GX_PT_POINTS_ARE_WORDS 0x80
-#define GX_PT_POINT_RUN_COUNT_MASK 0x7F
+#define GX_PT_POINTS_ARE_WORDS 0x80U
+#define GX_PT_POINT_RUN_COUNT_MASK 0x7FU
/*************************************************************************/
@@ -126,52 +126,67 @@
FT_UInt *point_cnt )
{
FT_UShort *points = NULL;
- FT_Int n;
- FT_Int runcnt;
- FT_Int i;
- FT_Int j;
- FT_Int first;
+ FT_UInt n;
+ FT_UInt runcnt;
+ FT_UInt i, j;
+ FT_UShort first;
FT_Memory memory = stream->memory;
FT_Error error = FT_Err_Ok;
FT_UNUSED( error );
- *point_cnt = n = FT_GET_BYTE();
+ *point_cnt = 0;
+
+ n = FT_GET_BYTE();
if ( n == 0 )
return ALL_POINTS;
if ( n & GX_PT_POINTS_ARE_WORDS )
- n = FT_GET_BYTE() | ( ( n & GX_PT_POINT_RUN_COUNT_MASK ) << 8 );
+ {
+ n &= GX_PT_POINT_RUN_COUNT_MASK;
+ n <<= 8;
+ n |= FT_GET_BYTE();
+ }
if ( FT_NEW_ARRAY( points, n ) )
return NULL;
+ *point_cnt = n;
+
i = 0;
while ( i < n )
{
runcnt = FT_GET_BYTE();
if ( runcnt & GX_PT_POINTS_ARE_WORDS )
{
- runcnt = runcnt & GX_PT_POINT_RUN_COUNT_MASK;
- first = points[i++] = FT_GET_USHORT();
+ runcnt &= GX_PT_POINT_RUN_COUNT_MASK;
+ first = FT_GET_USHORT();
+ points[i++] = first;
- if ( runcnt < 1 || i + runcnt >= n )
+ if ( runcnt < 1 || i + runcnt > n )
goto Exit;
- /* first point not included in runcount */
- for ( j = 0; j < runcnt; ++j )
- points[i++] = (FT_UShort)( first += FT_GET_USHORT() );
+ /* first point not included in run count */
+ for ( j = 0; j < runcnt; j++ )
+ {
+ first += FT_GET_USHORT();
+ points[i++] = first;
+ }
}
else
{
- first = points[i++] = FT_GET_BYTE();
+ first = FT_GET_BYTE();
+ points[i++] = first;
- if ( runcnt < 1 || i + runcnt >= n )
+ if ( runcnt < 1 || i + runcnt > n )
goto Exit;
- for ( j = 0; j < runcnt; ++j )
- points[i++] = (FT_UShort)( first += FT_GET_BYTE() );
+ for ( j = 0; j < runcnt; j++ )
+ {
+ first += FT_GET_BYTE();
+ points[i++] = first;
+ }
}
}
@@ -180,12 +195,9 @@
}
- enum
- {
- GX_DT_DELTAS_ARE_ZERO = 0x80,
- GX_DT_DELTAS_ARE_WORDS = 0x40,
- GX_DT_DELTA_RUN_COUNT_MASK = 0x3F
- };
+#define GX_DT_DELTAS_ARE_ZERO 0x80U
+#define GX_DT_DELTAS_ARE_WORDS 0x40U
+#define GX_DT_DELTA_RUN_COUNT_MASK 0x3FU
/*************************************************************************/
@@ -200,7 +212,7 @@
/* <Input> */
/* stream :: The data stream. */
/* */
- /* delta_cnt :: The number of to be read. */
+ /* delta_cnt :: The number of deltas to be read. */
/* */
/* <Return> */
/* An array of FT_Short containing the deltas for the affected */
@@ -210,12 +222,11 @@
/* */
static FT_Short*
ft_var_readpackeddeltas( FT_Stream stream,
- FT_Offset delta_cnt )
+ FT_UInt delta_cnt )
{
FT_Short *deltas = NULL;
- FT_UInt runcnt;
- FT_Offset i;
- FT_UInt j;
+ FT_UInt runcnt, cnt;
+ FT_UInt i, j;
FT_Memory memory = stream->memory;
FT_Error error = FT_Err_Ok;
@@ -229,34 +240,30 @@
while ( i < delta_cnt )
{
runcnt = FT_GET_BYTE();
+ cnt = runcnt & GX_DT_DELTA_RUN_COUNT_MASK;
+
if ( runcnt & GX_DT_DELTAS_ARE_ZERO )
{
- /* runcnt zeroes get added */
- for ( j = 0;
- j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) && i < delta_cnt;
- ++j )
+ /* `runcnt' zeroes get added */
+ for ( j = 0; j <= cnt && i < delta_cnt; j++ )
deltas[i++] = 0;
}
else if ( runcnt & GX_DT_DELTAS_ARE_WORDS )
{
- /* runcnt shorts from the stack */
- for ( j = 0;
- j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) && i < delta_cnt;
- ++j )
+ /* `runcnt' shorts from the stack */
+ for ( j = 0; j <= cnt && i < delta_cnt; j++ )
deltas[i++] = FT_GET_SHORT();
}
else
{
- /* runcnt signed bytes from the stack */
- for ( j = 0;
- j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) && i < delta_cnt;
- ++j )
+ /* `runcnt' signed bytes from the stack */
+ for ( j = 0; j <= cnt && i < delta_cnt; j++ )
deltas[i++] = FT_GET_CHAR();
}
- if ( j <= ( runcnt & GX_DT_DELTA_RUN_COUNT_MASK ) )
+ if ( j <= cnt )
{
- /* Bad format */
+ /* bad format */
FT_FREE( deltas );
return NULL;
}
@@ -281,12 +288,12 @@
static void
ft_var_load_avar( TT_Face face )
{
- FT_Stream stream = FT_FACE_STREAM(face);
+ FT_Stream stream = FT_FACE_STREAM( face );
FT_Memory memory = stream->memory;
GX_Blend blend = face->blend;
GX_AVarSegment segment;
FT_Error error = FT_Err_Ok;
- FT_ULong version;
+ FT_Long version;
FT_Long axisCount;
FT_Int i, j;
FT_ULong table_len;
@@ -294,9 +301,15 @@
FT_UNUSED( error );
+ FT_TRACE2(( "AVAR " ));
+
blend->avar_checked = TRUE;
- if ( (error = face->goto_table( face, TTAG_avar, stream, &table_len )) != 0 )
+ error = face->goto_table( face, TTAG_avar, stream, &table_len );
+ if ( error )
+ {
+ FT_TRACE2(( "is missing\n" ));
return;
+ }
if ( FT_FRAME_ENTER( table_len ) )
return;
@@ -304,23 +317,36 @@
version = FT_GET_LONG();
axisCount = FT_GET_LONG();
- if ( version != 0x00010000L ||
- axisCount != (FT_Long)blend->mmvar->num_axis )
+ if ( version != 0x00010000L )
+ {
+ FT_TRACE2(( "bad table version\n" ));
+ goto Exit;
+ }
+
+ FT_TRACE2(( "loaded\n" ));
+
+ if ( axisCount != (FT_Long)blend->mmvar->num_axis )
+ {
+ FT_TRACE2(( "ft_var_load_avar: number of axes in `avar' and `cvar'\n"
+ " table are different\n" ));
goto Exit;
+ }
if ( FT_NEW_ARRAY( blend->avar_segment, axisCount ) )
goto Exit;
segment = &blend->avar_segment[0];
- for ( i = 0; i < axisCount; ++i, ++segment )
+ for ( i = 0; i < axisCount; i++, segment++ )
{
+ FT_TRACE5(( " axis %d:\n", i ));
+
segment->pairCount = FT_GET_USHORT();
if ( FT_NEW_ARRAY( segment->correspondence, segment->pairCount ) )
{
/* Failure. Free everything we have done so far. We must do */
/* it right now since loading the `avar' table is optional. */
- for ( j = i - 1; j >= 0; --j )
+ for ( j = i - 1; j >= 0; j-- )
FT_FREE( blend->avar_segment[j].correspondence );
FT_FREE( blend->avar_segment );
@@ -328,13 +354,18 @@
goto Exit;
}
- for ( j = 0; j < segment->pairCount; ++j )
+ for ( j = 0; j < segment->pairCount; j++ )
{
- segment->correspondence[j].fromCoord =
- FT_GET_SHORT() << 2; /* convert to Fixed */
- segment->correspondence[j].toCoord =
- FT_GET_SHORT()<<2; /* convert to Fixed */
+ /* convert to Fixed */
+ segment->correspondence[j].fromCoord = FT_GET_SHORT() << 2;
+ segment->correspondence[j].toCoord = FT_GET_SHORT() << 2;
+
+ FT_TRACE5(( " mapping %.4f to %.4f\n",
+ segment->correspondence[j].fromCoord / 65536.0,
+ segment->correspondence[j].toCoord / 65536.0 ));
}
+
+ FT_TRACE5(( "\n" ));
}
Exit:
@@ -361,8 +392,8 @@
/* ft_var_load_gvar */
/* */
/* <Description> */
- /* Parses the `gvar' table if present. If `fvar' is there, `gvar' */
- /* had better be there too. */
+ /* Parse the `gvar' table if present. If `fvar' is there, `gvar' had */
+ /* better be there too. */
/* */
/* <InOut> */
/* face :: The font face. */
@@ -373,7 +404,7 @@
static FT_Error
ft_var_load_gvar( TT_Face face )
{
- FT_Stream stream = FT_FACE_STREAM(face);
+ FT_Stream stream = FT_FACE_STREAM( face );
FT_Memory memory = stream->memory;
GX_Blend blend = face->blend;
FT_Error error;
@@ -400,8 +431,17 @@
FT_FRAME_END
};
- if ( (error = face->goto_table( face, TTAG_gvar, stream, &table_len )) != 0 )
+
+ FT_TRACE2(( "GVAR " ));
+
+ if ( ( error = face->goto_table( face,
+ TTAG_gvar,
+ stream,
+ &table_len ) ) != 0 )
+ {
+ FT_TRACE2(( "is missing\n" ));
goto Exit;
+ }
gvar_start = FT_STREAM_POS( );
if ( FT_STREAM_READ_FIELDS( gvar_fields, &gvar_head ) )
@@ -411,13 +451,26 @@
blend->gv_glyphcnt = gvar_head.glyphCount;
offsetToData = gvar_start + gvar_head.offsetToData;
- if ( gvar_head.version != (FT_Long)0x00010000L ||
- gvar_head.axisCount != (FT_UShort)blend->mmvar->num_axis )
+ if ( gvar_head.version != 0x00010000L )
+ {
+ FT_TRACE1(( "bad table version\n" ));
+ error = FT_THROW( Invalid_Table );
+ goto Exit;
+ }
+
+ FT_TRACE2(( "loaded\n" ));
+
+ if ( gvar_head.axisCount != (FT_UShort)blend->mmvar->num_axis )
{
+ FT_TRACE1(( "ft_var_load_gvar: number of axes in `gvar' and `cvar'\n"
+ " table are different\n" ));
error = FT_THROW( Invalid_Table );
goto Exit;
}
+ FT_TRACE5(( "gvar: there are %d shared coordinates:\n",
+ blend->tuplecount ));
+
if ( FT_NEW_ARRAY( blend->glyphoffsets, blend->gv_glyphcnt + 1 ) )
goto Exit;
@@ -427,8 +480,8 @@
if ( FT_FRAME_ENTER( ( blend->gv_glyphcnt + 1 ) * 4L ) )
goto Exit;
- for ( i = 0; i <= blend->gv_glyphcnt; ++i )
- blend->glyphoffsets[i] = offsetToData + FT_GET_LONG();
+ for ( i = 0; i <= blend->gv_glyphcnt; i++ )
+ blend->glyphoffsets[i] = offsetToData + FT_GET_ULONG();
FT_FRAME_EXIT();
}
@@ -438,9 +491,9 @@
if ( FT_FRAME_ENTER( ( blend->gv_glyphcnt + 1 ) * 2L ) )
goto Exit;
- for ( i = 0; i <= blend->gv_glyphcnt; ++i )
+ for ( i = 0; i <= blend->gv_glyphcnt; i++ )
blend->glyphoffsets[i] = offsetToData + FT_GET_USHORT() * 2;
- /* XXX: Undocumented: `*2'! */
+ /* XXX: Undocumented: `*2'! */
FT_FRAME_EXIT();
}
@@ -451,14 +504,24 @@
gvar_head.axisCount * blend->tuplecount ) )
goto Exit;
- if ( FT_STREAM_SEEK( gvar_start + gvar_head.offsetToCoord ) ||
- FT_FRAME_ENTER( blend->tuplecount * gvar_head.axisCount * 2L ) )
+ if ( FT_STREAM_SEEK( gvar_start + gvar_head.offsetToCoord ) ||
+ FT_FRAME_ENTER( blend->tuplecount * gvar_head.axisCount * 2L ) )
goto Exit;
- for ( i = 0; i < blend->tuplecount; ++i )
- for ( j = 0 ; j < (FT_UInt)gvar_head.axisCount; ++j )
+ for ( i = 0; i < blend->tuplecount; i++ )
+ {
+ FT_TRACE5(( " [ " ));
+ for ( j = 0 ; j < (FT_UInt)gvar_head.axisCount; j++ )
+ {
blend->tuplecoords[i * gvar_head.axisCount + j] =
FT_GET_SHORT() << 2; /* convert to FT_Fixed */
+ FT_TRACE5(( "%.4f ",
+ blend->tuplecoords[i * gvar_head.axisCount + j] / 65536.0 ));
+ }
+ FT_TRACE5(( "]\n" ));
+ }
+
+ FT_TRACE5(( "\n" ));
FT_FRAME_EXIT();
}
@@ -506,48 +569,83 @@
FT_Fixed apply = 0x10000L;
- for ( i = 0; i < blend->num_axis; ++i )
+ for ( i = 0; i < blend->num_axis; i++ )
{
+ FT_TRACE6(( " axis coordinate %d (%.4f):\n",
+ i, blend->normalizedcoords[i] / 65536.0 ));
+
+ /* It's not clear why (for intermediate tuples) we don't need */
+ /* to check against start/end -- the documentation says we don't. */
+ /* Similarly, it's unclear why we don't need to scale along the */
+ /* axis. */
+
if ( tuple_coords[i] == 0 )
- /* It's not clear why (for intermediate tuples) we don't need */
- /* to check against start/end -- the documentation says we don't. */
- /* Similarly, it's unclear why we don't need to scale along the */
- /* axis. */
+ {
+ FT_TRACE6(( " tuple coordinate is zero, ignored\n", i ));
continue;
+ }
+
+ else if ( blend->normalizedcoords[i] == 0 )
+ {
+ FT_TRACE6(( " axis coordinate is zero, stop\n" ));
+ apply = 0;
+ break;
+ }
- else if ( blend->normalizedcoords[i] == 0 ||
- ( blend->normalizedcoords[i] < 0 && tuple_coords[i] > 0 ) ||
+ else if ( ( blend->normalizedcoords[i] < 0 && tuple_coords[i] > 0 ) ||
( blend->normalizedcoords[i] > 0 && tuple_coords[i] < 0 ) )
{
+ FT_TRACE6(( " tuple coordinate value %.4f is exceeded, stop\n",
+ tuple_coords[i] / 65536.0 ));
apply = 0;
break;
}
else if ( !( tupleIndex & GX_TI_INTERMEDIATE_TUPLE ) )
+ {
+ FT_TRACE6(( " tuple coordinate value %.4f fits\n",
+ tuple_coords[i] / 65536.0 ));
/* not an intermediate tuple */
apply = FT_MulFix( apply,
blend->normalizedcoords[i] > 0
? blend->normalizedcoords[i]
: -blend->normalizedcoords[i] );
+ }
- else if ( blend->normalizedcoords[i] <= im_start_coords[i] ||
- blend->normalizedcoords[i] >= im_end_coords[i] )
+ else if ( blend->normalizedcoords[i] < im_start_coords[i] ||
+ blend->normalizedcoords[i] > im_end_coords[i] )
{
+ FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] is exceeded,"
+ " stop\n",
+ im_start_coords[i] / 65536.0,
+ im_end_coords[i] / 65536.0 ));
apply = 0;
break;
}
else if ( blend->normalizedcoords[i] < tuple_coords[i] )
+ {
+ FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] fits\n",
+ im_start_coords[i] / 65536.0,
+ im_end_coords[i] / 65536.0 ));
apply = FT_MulDiv( apply,
blend->normalizedcoords[i] - im_start_coords[i],
tuple_coords[i] - im_start_coords[i] );
+ }
else
+ {
+ FT_TRACE6(( " intermediate tuple range [%.4f;%.4f] fits\n",
+ im_start_coords[i] / 65536.0,
+ im_end_coords[i] / 65536.0 ));
apply = FT_MulDiv( apply,
im_end_coords[i] - blend->normalizedcoords[i],
im_end_coords[i] - tuple_coords[i] );
+ }
}
+ FT_TRACE6(( " apply factor is %.4f\n", apply / 65536.0 ));
+
return apply;
}
@@ -577,9 +675,9 @@
typedef struct fvar_axis_
{
FT_ULong axisTag;
- FT_ULong minValue;
- FT_ULong defaultValue;
- FT_ULong maxValue;
+ FT_Fixed minValue;
+ FT_Fixed defaultValue;
+ FT_Fixed maxValue;
FT_UShort flags;
FT_UShort nameID;
@@ -647,25 +745,37 @@
FT_FRAME_START( 20 ),
FT_FRAME_ULONG ( axisTag ),
- FT_FRAME_ULONG ( minValue ),
- FT_FRAME_ULONG ( defaultValue ),
- FT_FRAME_ULONG ( maxValue ),
+ FT_FRAME_LONG ( minValue ),
+ FT_FRAME_LONG ( defaultValue ),
+ FT_FRAME_LONG ( maxValue ),
FT_FRAME_USHORT( flags ),
FT_FRAME_USHORT( nameID ),
FT_FRAME_END
};
+ /* read the font data and set up the internal representation */
+ /* if not already done */
+
if ( face->blend == NULL )
{
+ FT_TRACE2(( "FVAR " ));
+
/* both `fvar' and `gvar' must be present */
- if ( (error = face->goto_table( face, TTAG_gvar,
- stream, &table_len )) != 0 )
+ if ( ( error = face->goto_table( face, TTAG_gvar,
+ stream, &table_len ) ) != 0 )
+ {
+ FT_TRACE1(( "\n"
+ "TT_Get_MM_Var: `gvar' table is missing\n" ));
goto Exit;
+ }
- if ( (error = face->goto_table( face, TTAG_fvar,
- stream, &table_len )) != 0 )
+ if ( ( error = face->goto_table( face, TTAG_fvar,
+ stream, &table_len ) ) != 0 )
+ {
+ FT_TRACE1(( "is missing\n" ));
goto Exit;
+ }
fvar_start = FT_STREAM_POS( );
@@ -673,7 +783,12 @@
goto Exit;
if ( fvar_head.version != (FT_Long)0x00010000L ||
+#if 0
+ /* fonts like `JamRegular.ttf' have an incorrect value for */
+ /* `countSizePairs'; since value 2 is hard-coded in `fvar' */
+ /* version 1.0, we simply ignore it */
fvar_head.countSizePairs != 2 ||
+#endif
fvar_head.axisSize != 20 ||
/* axisCount limit implied by 16-bit instanceSize */
fvar_head.axisCount > 0x3FFE ||
@@ -683,10 +798,16 @@
fvar_head.offsetToData + fvar_head.axisCount * 20U +
fvar_head.instanceCount * fvar_head.instanceSize > table_len )
{
+ FT_TRACE1(( "\n"
+ "TT_Get_MM_Var: invalid `fvar' header\n" ));
error = FT_THROW( Invalid_Table );
goto Exit;
}
+ FT_TRACE2(( "loaded\n" ));
+
+ FT_TRACE5(( "number of GX style axes: %d\n", fvar_head.axisCount ));
+
if ( FT_NEW( face->blend ) )
goto Exit;
@@ -702,6 +823,9 @@
goto Exit;
face->blend->mmvar = mmvar;
+ /* set up pointers and offsets into the `mmvar' array; */
+ /* the data gets filled in later on */
+
mmvar->num_axis =
fvar_head.axisCount;
mmvar->num_designs =
@@ -711,30 +835,32 @@
mmvar->num_namedstyles =
fvar_head.instanceCount;
mmvar->axis =
- (FT_Var_Axis*)&(mmvar[1]);
+ (FT_Var_Axis*)&( mmvar[1] );
mmvar->namedstyle =
- (FT_Var_Named_Style*)&(mmvar->axis[fvar_head.axisCount]);
+ (FT_Var_Named_Style*)&( mmvar->axis[fvar_head.axisCount] );
next_coords =
- (FT_Fixed*)&(mmvar->namedstyle[fvar_head.instanceCount]);
- for ( i = 0; i < fvar_head.instanceCount; ++i )
+ (FT_Fixed*)&( mmvar->namedstyle[fvar_head.instanceCount] );
+ for ( i = 0; i < fvar_head.instanceCount; i++ )
{
mmvar->namedstyle[i].coords = next_coords;
next_coords += fvar_head.axisCount;
}
next_name = (FT_String*)next_coords;
- for ( i = 0; i < fvar_head.axisCount; ++i )
+ for ( i = 0; i < fvar_head.axisCount; i++ )
{
mmvar->axis[i].name = next_name;
next_name += 5;
}
+ /* now fill in the data */
+
if ( FT_STREAM_SEEK( fvar_start + fvar_head.offsetToData ) )
goto Exit;
a = mmvar->axis;
- for ( i = 0; i < fvar_head.axisCount; ++i )
+ for ( i = 0; i < fvar_head.axisCount; i++ )
{
GX_FVar_Axis axis_rec;
@@ -742,22 +868,30 @@
if ( FT_STREAM_READ_FIELDS( fvaraxis_fields, &axis_rec ) )
goto Exit;
a->tag = axis_rec.axisTag;
- a->minimum = axis_rec.minValue; /* A Fixed */
- a->def = axis_rec.defaultValue; /* A Fixed */
- a->maximum = axis_rec.maxValue; /* A Fixed */
+ a->minimum = axis_rec.minValue;
+ a->def = axis_rec.defaultValue;
+ a->maximum = axis_rec.maxValue;
a->strid = axis_rec.nameID;
a->name[0] = (FT_String)( a->tag >> 24 );
a->name[1] = (FT_String)( ( a->tag >> 16 ) & 0xFF );
a->name[2] = (FT_String)( ( a->tag >> 8 ) & 0xFF );
a->name[3] = (FT_String)( ( a->tag ) & 0xFF );
- a->name[4] = 0;
+ a->name[4] = '\0';
- ++a;
+ FT_TRACE5(( " \"%s\": minimum=%.4f, default=%.4f, maximum=%.4f\n",
+ a->name,
+ a->minimum / 65536.0,
+ a->def / 65536.0,
+ a->maximum / 65536.0 ));
+
+ a++;
}
+ FT_TRACE5(( "\n" ));
+
ns = mmvar->namedstyle;
- for ( i = 0; i < fvar_head.instanceCount; ++i, ++ns )
+ for ( i = 0; i < fvar_head.instanceCount; i++, ns++ )
{
if ( FT_FRAME_ENTER( 4L + 4L * fvar_head.axisCount ) )
goto Exit;
@@ -765,13 +899,15 @@
ns->strid = FT_GET_USHORT();
(void) /* flags = */ FT_GET_USHORT();
- for ( j = 0; j < fvar_head.axisCount; ++j )
- ns->coords[j] = FT_GET_ULONG(); /* A Fixed */
+ for ( j = 0; j < fvar_head.axisCount; j++ )
+ ns->coords[j] = FT_GET_LONG();
FT_FRAME_EXIT();
}
}
+ /* fill the output array if requested */
+
if ( master != NULL )
{
FT_UInt n;
@@ -782,36 +918,36 @@
FT_MEM_COPY( mmvar, face->blend->mmvar, face->blend->mmvar_len );
mmvar->axis =
- (FT_Var_Axis*)&(mmvar[1]);
+ (FT_Var_Axis*)&( mmvar[1] );
mmvar->namedstyle =
- (FT_Var_Named_Style*)&(mmvar->axis[mmvar->num_axis]);
+ (FT_Var_Named_Style*)&( mmvar->axis[mmvar->num_axis] );
next_coords =
- (FT_Fixed*)&(mmvar->namedstyle[mmvar->num_namedstyles]);
+ (FT_Fixed*)&( mmvar->namedstyle[mmvar->num_namedstyles] );
- for ( n = 0; n < mmvar->num_namedstyles; ++n )
+ for ( n = 0; n < mmvar->num_namedstyles; n++ )
{
mmvar->namedstyle[n].coords = next_coords;
next_coords += mmvar->num_axis;
}
- a = mmvar->axis;
+ a = mmvar->axis;
next_name = (FT_String*)next_coords;
- for ( n = 0; n < mmvar->num_axis; ++n )
+ for ( n = 0; n < mmvar->num_axis; n++ )
{
a->name = next_name;
/* standard PostScript names for some standard apple tags */
if ( a->tag == TTAG_wght )
- a->name = (char *)"Weight";
+ a->name = (char*)"Weight";
else if ( a->tag == TTAG_wdth )
- a->name = (char *)"Width";
+ a->name = (char*)"Width";
else if ( a->tag == TTAG_opsz )
- a->name = (char *)"OpticalSize";
+ a->name = (char*)"OpticalSize";
else if ( a->tag == TTAG_slnt )
- a->name = (char *)"Slant";
+ a->name = (char*)"Slant";
next_name += 5;
- ++a;
+ a++;
}
*master = mmvar;
@@ -837,9 +973,12 @@
/* Initialize the blend structure with `gvar' data. */
/* */
/* <Input> */
- /* num_coords :: Must be the axis count of the font. */
+ /* num_coords :: The number of available coordinates. If it is */
+ /* larger than the number of axes, ignore the excess */
+ /* values. If it is smaller than the number of axes, */
+ /* use the default value (0) for the remaining axes. */
/* */
- /* coords :: An array of num_coords, each between [-1,1]. */
+ /* coords :: An array of `num_coords', each between [-1,1]. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
@@ -868,33 +1007,44 @@
if ( face->blend == NULL )
{
- if ( (error = TT_Get_MM_Var( face, NULL)) != 0 )
+ if ( ( error = TT_Get_MM_Var( face, NULL ) ) != 0 )
goto Exit;
}
blend = face->blend;
mmvar = blend->mmvar;
- if ( num_coords != mmvar->num_axis )
+ if ( num_coords > mmvar->num_axis )
{
- error = FT_THROW( Invalid_Argument );
- goto Exit;
+ FT_TRACE2(( "TT_Set_MM_Blend: only using first %d of %d coordinates\n",
+ mmvar->num_axis, num_coords ));
+ num_coords = mmvar->num_axis;
}
- for ( i = 0; i < num_coords; ++i )
+ FT_TRACE5(( "normalized design coordinates:\n" ));
+
+ for ( i = 0; i < num_coords; i++ )
+ {
+ FT_TRACE5(( " %.4f\n", coords[i] / 65536.0 ));
if ( coords[i] < -0x00010000L || coords[i] > 0x00010000L )
{
+ FT_TRACE1(( "TT_Set_MM_Blend: normalized design coordinate %.4f\n"
+ " is out of range [-1;1]\n",
+ coords[i] / 65536.0 ));
error = FT_THROW( Invalid_Argument );
goto Exit;
}
+ }
+
+ FT_TRACE5(( "\n" ));
if ( blend->glyphoffsets == NULL )
- if ( (error = ft_var_load_gvar( face )) != 0 )
+ if ( ( error = ft_var_load_gvar( face ) ) != 0 )
goto Exit;
if ( blend->normalizedcoords == NULL )
{
- if ( FT_NEW_ARRAY( blend->normalizedcoords, num_coords ) )
+ if ( FT_NEW_ARRAY( blend->normalizedcoords, mmvar->num_axis ) )
goto Exit;
manageCvt = mcvt_modify;
@@ -906,7 +1056,8 @@
else
{
manageCvt = mcvt_retain;
- for ( i = 0; i < num_coords; ++i )
+
+ for ( i = 0; i < num_coords; i++ )
{
if ( blend->normalizedcoords[i] != coords[i] )
{
@@ -915,13 +1066,22 @@
}
}
+ for ( ; i < mmvar->num_axis; i++ )
+ {
+ if ( blend->normalizedcoords[i] != 0 )
+ {
+ manageCvt = mcvt_load;
+ break;
+ }
+ }
+
/* If we don't change the blend coords then we don't need to do */
/* anything to the cvt table. It will be correct. Otherwise we */
/* no longer have the original cvt (it was modified when we set */
/* the blend last time), so we must reload and then modify it. */
}
- blend->num_axis = num_coords;
+ blend->num_axis = mmvar->num_axis;
FT_MEM_COPY( blend->normalizedcoords,
coords,
num_coords * sizeof ( FT_Fixed ) );
@@ -938,13 +1098,13 @@
FT_FREE( face->cvt );
face->cvt = NULL;
- tt_face_load_cvt( face, face->root.stream );
+ error = tt_face_load_cvt( face, face->root.stream );
break;
case mcvt_modify:
/* The original cvt table is in memory. All we need to do is */
/* apply the `cvar' table (if any). */
- tt_face_vary_cvt( face, face->root.stream );
+ error = tt_face_vary_cvt( face, face->root.stream );
break;
case mcvt_retain:
@@ -973,7 +1133,10 @@
/* Initialize the blend struct with `gvar' data. */
/* */
/* <Input> */
- /* num_coords :: This must be the axis count of the font. */
+ /* num_coords :: The number of available coordinates. If it is */
+ /* larger than the number of axes, ignore the excess */
+ /* values. If it is smaller than the number of axes, */
+ /* use the default values for the remaining axes. */
/* */
/* coords :: A coordinate array with `num_coords' elements. */
/* */
@@ -997,17 +1160,19 @@
if ( face->blend == NULL )
{
- if ( (error = TT_Get_MM_Var( face, NULL )) != 0 )
+ if ( ( error = TT_Get_MM_Var( face, NULL ) ) != 0 )
goto Exit;
}
blend = face->blend;
mmvar = blend->mmvar;
- if ( num_coords != mmvar->num_axis )
+ if ( num_coords > mmvar->num_axis )
{
- error = FT_THROW( Invalid_Argument );
- goto Exit;
+ FT_TRACE2(( "TT_Set_Var_Design:"
+ " only using first %d of %d coordinates\n",
+ mmvar->num_axis, num_coords ));
+ num_coords = mmvar->num_axis;
}
/* Axis normalization is a two stage process. First we normalize */
@@ -1017,32 +1182,52 @@
if ( FT_NEW_ARRAY( normalized, mmvar->num_axis ) )
goto Exit;
+ FT_TRACE5(( "design coordinates:\n" ));
+
a = mmvar->axis;
- for ( i = 0; i < mmvar->num_axis; ++i, ++a )
+ for ( i = 0; i < num_coords; i++, a++ )
{
+ FT_TRACE5(( " %.4f\n", coords[i] / 65536.0 ));
if ( coords[i] > a->maximum || coords[i] < a->minimum )
{
+ FT_TRACE1(( "TT_Set_Var_Design: normalized design coordinate %.4f\n"
+ " is out of range [%.4f;%.4f]\n",
+ coords[i] / 65536.0,
+ a->minimum / 65536.0,
+ a->maximum / 65536.0 ));
error = FT_THROW( Invalid_Argument );
goto Exit;
}
if ( coords[i] < a->def )
- normalized[i] = -FT_DivFix( coords[i] - a->def, a->minimum - a->def );
+ normalized[i] = -FT_DivFix( coords[i] - a->def,
+ a->minimum - a->def );
else if ( a->maximum == a->def )
normalized[i] = 0;
else
- normalized[i] = FT_DivFix( coords[i] - a->def, a->maximum - a->def );
+ normalized[i] = FT_DivFix( coords[i] - a->def,
+ a->maximum - a->def );
}
+ FT_TRACE5(( "\n" ));
+
+ for ( ; i < mmvar->num_axis; i++ )
+ normalized[i] = 0;
+
if ( !blend->avar_checked )
ft_var_load_avar( face );
if ( blend->avar_segment != NULL )
{
+ FT_TRACE5(( "normalized design coordinates"
+ " before applying `avar' data:\n" ));
+
av = blend->avar_segment;
- for ( i = 0; i < mmvar->num_axis; ++i, ++av )
+ for ( i = 0; i < mmvar->num_axis; i++, av++ )
{
- for ( j = 1; j < (FT_UInt)av->pairCount; ++j )
+ for ( j = 1; j < (FT_UInt)av->pairCount; j++ )
+ {
+ FT_TRACE5(( " %.4f\n", normalized[i] / 65536.0 ));
if ( normalized[i] < av->correspondence[j].fromCoord )
{
normalized[i] =
@@ -1054,10 +1239,11 @@
av->correspondence[j - 1].toCoord;
break;
}
+ }
}
}
- error = TT_Set_MM_Blend( face, num_coords, normalized );
+ error = TT_Set_MM_Blend( face, mmvar->num_axis, normalized );
Exit:
FT_FREE( normalized );
@@ -1120,16 +1306,16 @@
if ( blend == NULL )
{
- FT_TRACE2(( "tt_face_vary_cvt: no blend specified\n" ));
-
+ FT_TRACE2(( "\n"
+ "tt_face_vary_cvt: no blend specified\n" ));
error = FT_Err_Ok;
goto Exit;
}
if ( face->cvt == NULL )
{
- FT_TRACE2(( "tt_face_vary_cvt: no `cvt ' table\n" ));
-
+ FT_TRACE2(( "\n"
+ "tt_face_vary_cvt: no `cvt ' table\n" ));
error = FT_Err_Ok;
goto Exit;
}
@@ -1158,6 +1344,8 @@
goto FExit;
}
+ FT_TRACE2(( "loaded\n" ));
+
if ( FT_NEW_ARRAY( tuple_coords, blend->num_axis ) ||
FT_NEW_ARRAY( im_start_coords, blend->num_axis ) ||
FT_NEW_ARRAY( im_end_coords, blend->num_axis ) )
@@ -1170,13 +1358,17 @@
/* tuplecount, but John Jenkins says that shared points don't apply */
/* to `cvar', and no other flags are defined. */
- for ( i = 0; i < ( tupleCount & 0xFFF ); ++i )
+ FT_TRACE5(( "cvar: there are %d tuples:\n", tupleCount ));
+
+ for ( i = 0; i < ( tupleCount & 0xFFF ); i++ )
{
FT_UInt tupleDataSize;
FT_UInt tupleIndex;
FT_Fixed apply;
+ FT_TRACE6(( " tuple %d:\n", i ));
+
tupleDataSize = FT_GET_USHORT();
tupleIndex = FT_GET_USHORT();
@@ -1185,7 +1377,7 @@
if ( tupleIndex & GX_TI_EMBEDDED_TUPLE_COORD )
{
- for ( j = 0; j < blend->num_axis; ++j )
+ for ( j = 0; j < blend->num_axis; j++ )
tuple_coords[j] = FT_GET_SHORT() << 2; /* convert from */
/* short frac to fixed */
}
@@ -1194,7 +1386,7 @@
/* skip this tuple; it makes no sense */
if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE )
- for ( j = 0; j < 2 * blend->num_axis; ++j )
+ for ( j = 0; j < 2 * blend->num_axis; j++ )
(void)FT_GET_SHORT();
offsetToData += tupleDataSize;
@@ -1203,9 +1395,9 @@
if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE )
{
- for ( j = 0; j < blend->num_axis; ++j )
+ for ( j = 0; j < blend->num_axis; j++ )
im_start_coords[j] = FT_GET_SHORT() << 2;
- for ( j = 0; j < blend->num_axis; ++j )
+ for ( j = 0; j < blend->num_axis; j++ )
im_end_coords[j] = FT_GET_SHORT() << 2;
}
@@ -1233,25 +1425,74 @@
point_count == 0 ? face->cvt_size
: point_count );
if ( localpoints == NULL || deltas == NULL )
- /* failure, ignore it */;
+ ; /* failure, ignore it */
else if ( localpoints == ALL_POINTS )
{
+#ifdef FT_DEBUG_LEVEL_TRACE
+ int count = 0;
+#endif
+
+
+ FT_TRACE7(( " CVT deltas:\n" ));
+
/* this means that there are deltas for every entry in cvt */
- for ( j = 0; j < face->cvt_size; ++j )
- face->cvt[j] = (FT_Short)( face->cvt[j] +
+ for ( j = 0; j < face->cvt_size; j++ )
+ {
+ FT_Long orig_cvt = face->cvt[j];
+
+
+ face->cvt[j] = (FT_Short)( orig_cvt +
FT_MulFix( deltas[j], apply ) );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ if ( orig_cvt != face->cvt[j] )
+ {
+ FT_TRACE7(( " %d: %d -> %d\n",
+ j, orig_cvt, face->cvt[j] ));
+ count++;
+ }
+#endif
+ }
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ if ( !count )
+ FT_TRACE7(( " none\n" ));
+#endif
}
else
{
- for ( j = 0; j < point_count; ++j )
+#ifdef FT_DEBUG_LEVEL_TRACE
+ int count = 0;
+#endif
+
+
+ FT_TRACE7(( " CVT deltas:\n" ));
+
+ for ( j = 0; j < point_count; j++ )
{
- int pindex = localpoints[j];
+ int pindex = localpoints[j];
+ FT_Long orig_cvt = face->cvt[pindex];
+
- face->cvt[pindex] = (FT_Short)( face->cvt[pindex] +
+ face->cvt[pindex] = (FT_Short)( orig_cvt +
FT_MulFix( deltas[j], apply ) );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ if ( orig_cvt != face->cvt[pindex] )
+ {
+ FT_TRACE7(( " %d: %d -> %d\n",
+ pindex, orig_cvt, face->cvt[pindex] ));
+ count++;
+ }
+#endif
}
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ if ( !count )
+ FT_TRACE7(( " none\n" ));
+#endif
}
if ( localpoints != ALL_POINTS )
@@ -1263,6 +1504,8 @@
FT_Stream_SeekSet( stream, here );
}
+ FT_TRACE5(( "\n" ));
+
FExit:
FT_FRAME_EXIT();
@@ -1275,13 +1518,230 @@
}
+ /* Shift the original coordinates of all points between indices `p1' */
+ /* and `p2', using the same difference as given by index `ref'. */
+
+ /* modeled after `af_iup_shift' */
+
+ static void
+ tt_delta_shift( int p1,
+ int p2,
+ int ref,
+ FT_Vector* in_points,
+ FT_Vector* out_points )
+ {
+ int p;
+ FT_Vector delta;
+
+
+ delta.x = out_points[ref].x - in_points[ref].x;
+ delta.y = out_points[ref].y - in_points[ref].y;
+
+ if ( delta.x == 0 && delta.y == 0 )
+ return;
+
+ for ( p = p1; p < ref; p++ )
+ {
+ out_points[p].x += delta.x;
+ out_points[p].y += delta.y;
+ }
+
+ for ( p = ref + 1; p <= p2; p++ )
+ {
+ out_points[p].x += delta.x;
+ out_points[p].y += delta.y;
+ }
+ }
+
+
+ /* Interpolate the original coordinates of all points with indices */
+ /* between `p1' and `p2', using `ref1' and `ref2' as the reference */
+ /* point indices. */
+
+ /* modeled after `af_iup_interp', `_iup_worker_interpolate', and */
+ /* `Ins_IUP' */
+
+ static void
+ tt_delta_interpolate( int p1,
+ int p2,
+ int ref1,
+ int ref2,
+ FT_Vector* in_points,
+ FT_Vector* out_points )
+ {
+ int p, i;
+
+ FT_Pos out, in1, in2, out1, out2, d1, d2;
+
+
+ if ( p1 > p2 )
+ return;
+
+ /* handle both horizontal and vertical coordinates */
+ for ( i = 0; i <= 1; i++ )
+ {
+ /* shift array pointers so that we can access `foo.y' as `foo.x' */
+ in_points = (FT_Vector*)( (FT_Pos*)in_points + i );
+ out_points = (FT_Vector*)( (FT_Pos*)out_points + i );
+
+ if ( in_points[ref1].x > in_points[ref2].x )
+ {
+ p = ref1;
+ ref1 = ref2;
+ ref2 = p;
+ }
+
+ in1 = in_points[ref1].x;
+ in2 = in_points[ref2].x;
+ out1 = out_points[ref1].x;
+ out2 = out_points[ref2].x;
+ d1 = out1 - in1;
+ d2 = out2 - in2;
+
+ if ( out1 == out2 || in1 == in2 )
+ {
+ for ( p = p1; p <= p2; p++ )
+ {
+ out = in_points[p].x;
+
+ if ( out <= in1 )
+ out += d1;
+ else if ( out >= in2 )
+ out += d2;
+ else
+ out = out1;
+
+ out_points[p].x = out;
+ }
+ }
+ else
+ {
+ FT_Fixed scale = FT_DivFix( out2 - out1, in2 - in1 );
+
+
+ for ( p = p1; p <= p2; p++ )
+ {
+ out = in_points[p].x;
+
+ if ( out <= in1 )
+ out += d1;
+ else if ( out >= in2 )
+ out += d2;
+ else
+ out = out1 + FT_MulFix( out - in1, scale );
+
+ out_points[p].x = out;
+ }
+ }
+ }
+ }
+
+
+ /* Interpolate points without delta values, similar to */
+ /* the `IUP' hinting instruction. */
+
+ /* modeled after `Ins_IUP */
+
+ static void
+ tt_handle_deltas( FT_Outline* outline,
+ FT_Vector* in_points,
+ FT_Bool* has_delta )
+ {
+ FT_Vector* out_points;
+
+ FT_UInt first_point;
+ FT_UInt end_point;
+
+ FT_UInt first_delta;
+ FT_UInt cur_delta;
+
+ FT_UInt point;
+ FT_Short contour;
+
+
+ /* ignore empty outlines */
+ if ( !outline->n_contours )
+ return;
+
+ out_points = outline->points;
+
+ contour = 0;
+ point = 0;
+
+ do
+ {
+ end_point = outline->contours[contour];
+ first_point = point;
+
+ /* search first point that has a delta */
+ while ( point <= end_point && !has_delta[point] )
+ point++;
+
+ if ( point <= end_point )
+ {
+ first_delta = point;
+ cur_delta = point;
+
+ point++;
+
+ while ( point <= end_point )
+ {
+ /* search next point that has a delta */
+ /* and interpolate intermediate points */
+ if ( has_delta[point] )
+ {
+ tt_delta_interpolate( cur_delta + 1,
+ point - 1,
+ cur_delta,
+ point,
+ in_points,
+ out_points );
+ cur_delta = point;
+ }
+
+ point++;
+ }
+
+ /* shift contour if we only have a single delta */
+ if ( cur_delta == first_delta )
+ tt_delta_shift( first_point,
+ end_point,
+ cur_delta,
+ in_points,
+ out_points );
+ else
+ {
+ /* otherwise handle remaining points */
+ /* at the end and beginning of the contour */
+ tt_delta_interpolate( cur_delta + 1,
+ end_point,
+ cur_delta,
+ first_delta,
+ in_points,
+ out_points );
+
+ if ( first_delta > 0 )
+ tt_delta_interpolate( first_point,
+ first_delta - 1,
+ cur_delta,
+ first_delta,
+ in_points,
+ out_points );
+ }
+ }
+ contour++;
+
+ } while ( contour < outline->n_contours );
+ }
+
+
/*************************************************************************/
/* */
/* <Function> */
- /* TT_Vary_Get_Glyph_Deltas */
+ /* TT_Vary_Apply_Glyph_Deltas */
/* */
/* <Description> */
- /* Load the appropriate deltas for the current glyph. */
+ /* Apply the appropriate deltas to the current glyph. */
/* */
/* <Input> */
/* face :: A handle to the target face object. */
@@ -1291,22 +1751,24 @@
/* n_points :: The number of the points in the glyph, including */
/* phantom points. */
/* */
- /* <Output> */
- /* deltas :: The array of points to change. */
+ /* <InOut> */
+ /* outline :: The outline to change. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
FT_LOCAL_DEF( FT_Error )
- TT_Vary_Get_Glyph_Deltas( TT_Face face,
- FT_UInt glyph_index,
- FT_Vector* *deltas,
- FT_UInt n_points )
+ TT_Vary_Apply_Glyph_Deltas( TT_Face face,
+ FT_UInt glyph_index,
+ FT_Outline* outline,
+ FT_UInt n_points )
{
FT_Stream stream = face->root.stream;
FT_Memory memory = stream->memory;
GX_Blend blend = face->blend;
- FT_Vector* delta_xy = NULL;
+
+ FT_Vector* points_org = NULL;
+ FT_Bool* has_delta = NULL;
FT_Error error;
FT_ULong glyph_start;
@@ -1327,15 +1789,18 @@
if ( !face->doblend || blend == NULL )
return FT_THROW( Invalid_Argument );
- /* to be freed by the caller */
- if ( FT_NEW_ARRAY( delta_xy, n_points ) )
- goto Exit;
- *deltas = delta_xy;
-
if ( glyph_index >= blend->gv_glyphcnt ||
blend->glyphoffsets[glyph_index] ==
blend->glyphoffsets[glyph_index + 1] )
- return FT_Err_Ok; /* no variation data for this glyph */
+ {
+ FT_TRACE2(( "TT_Vary_Apply_Glyph_Deltas:"
+ " no variation data for this glyph\n" ));
+ return FT_Err_Ok;
+ }
+
+ if ( FT_NEW_ARRAY( points_org, n_points ) ||
+ FT_NEW_ARRAY( has_delta, n_points ) )
+ goto Fail1;
if ( FT_STREAM_SEEK( blend->glyphoffsets[glyph_index] ) ||
FT_FRAME_ENTER( blend->glyphoffsets[glyph_index + 1] -
@@ -1367,40 +1832,42 @@
FT_Stream_SeekSet( stream, here );
}
- for ( i = 0; i < ( tupleCount & GX_TC_TUPLE_COUNT_MASK ); ++i )
+ FT_TRACE5(( "gvar: there are %d tuples:\n", tupleCount ));
+
+ for ( i = 0; i < ( tupleCount & GX_TC_TUPLE_COUNT_MASK ); i++ )
{
FT_UInt tupleDataSize;
FT_UInt tupleIndex;
FT_Fixed apply;
+ FT_TRACE6(( " tuple %d:\n", i ));
+
tupleDataSize = FT_GET_USHORT();
tupleIndex = FT_GET_USHORT();
if ( tupleIndex & GX_TI_EMBEDDED_TUPLE_COORD )
{
- for ( j = 0; j < blend->num_axis; ++j )
+ for ( j = 0; j < blend->num_axis; j++ )
tuple_coords[j] = FT_GET_SHORT() << 2; /* convert from */
/* short frac to fixed */
}
else if ( ( tupleIndex & GX_TI_TUPLE_INDEX_MASK ) >= blend->tuplecount )
{
error = FT_THROW( Invalid_Table );
- goto Fail3;
+ goto Fail2;
}
else
- {
FT_MEM_COPY(
tuple_coords,
- &blend->tuplecoords[(tupleIndex & 0xFFF) * blend->num_axis],
+ &blend->tuplecoords[( tupleIndex & 0xFFF ) * blend->num_axis],
blend->num_axis * sizeof ( FT_Fixed ) );
- }
if ( tupleIndex & GX_TI_INTERMEDIATE_TUPLE )
{
- for ( j = 0; j < blend->num_axis; ++j )
+ for ( j = 0; j < blend->num_axis; j++ )
im_start_coords[j] = FT_GET_SHORT() << 2;
- for ( j = 0; j < blend->num_axis; ++j )
+ for ( j = 0; j < blend->num_axis; j++ )
im_end_coords[j] = FT_GET_SHORT() << 2;
}
@@ -1443,24 +1910,101 @@
else if ( points == ALL_POINTS )
{
+#ifdef FT_DEBUG_LEVEL_TRACE
+ int count = 0;
+#endif
+
+
+ FT_TRACE7(( " point deltas:\n" ));
+
/* this means that there are deltas for every point in the glyph */
- for ( j = 0; j < n_points; ++j )
+ for ( j = 0; j < n_points; j++ )
{
- delta_xy[j].x += FT_MulFix( deltas_x[j], apply );
- delta_xy[j].y += FT_MulFix( deltas_y[j], apply );
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_Vector point_org = outline->points[j];
+#endif
+
+
+ outline->points[j].x += FT_MulFix( deltas_x[j], apply );
+ outline->points[j].y += FT_MulFix( deltas_y[j], apply );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ if ( ( point_org.x != outline->points[j].x ) ||
+ ( point_org.y != outline->points[j].y ) )
+ {
+ FT_TRACE7(( " %d: (%d, %d) -> (%d, %d)\n",
+ j,
+ point_org.x,
+ point_org.y,
+ outline->points[j].x,
+ outline->points[j].y ));
+ count++;
+ }
+#endif
}
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ if ( !count )
+ FT_TRACE7(( " none\n" ));
+#endif
}
else
{
- for ( j = 0; j < point_count; ++j )
+#ifdef FT_DEBUG_LEVEL_TRACE
+ int count = 0;
+#endif
+
+
+ /* we have to interpolate the missing deltas similar to the */
+ /* IUP bytecode instruction */
+ for ( j = 0; j < n_points; j++ )
+ {
+ points_org[j] = outline->points[j];
+ has_delta[j] = FALSE;
+ }
+
+ for ( j = 0; j < point_count; j++ )
{
- if ( localpoints[j] >= n_points )
+ FT_UShort idx = localpoints[j];
+
+
+ if ( idx >= n_points )
continue;
- delta_xy[localpoints[j]].x += FT_MulFix( deltas_x[j], apply );
- delta_xy[localpoints[j]].y += FT_MulFix( deltas_y[j], apply );
+ has_delta[idx] = TRUE;
+
+ outline->points[idx].x += FT_MulFix( deltas_x[j], apply );
+ outline->points[idx].y += FT_MulFix( deltas_y[j], apply );
}
+
+ /* no need to handle phantom points here, */
+ /* since solitary points can't be interpolated */
+ tt_handle_deltas( outline,
+ points_org,
+ has_delta );
+
+#ifdef FT_DEBUG_LEVEL_TRACE
+ FT_TRACE7(( " point deltas:\n" ));
+
+ for ( j = 0; j < n_points; j++)
+ {
+ if ( ( points_org[j].x != outline->points[j].x ) ||
+ ( points_org[j].y != outline->points[j].y ) )
+ {
+ FT_TRACE7(( " %d: (%d, %d) -> (%d, %d)\n",
+ j,
+ points_org[j].x,
+ points_org[j].y,
+ outline->points[j].x,
+ outline->points[j].y ));
+ count++;
+ }
+ }
+
+ if ( !count )
+ FT_TRACE7(( " none\n" ));
+#endif
}
if ( localpoints != ALL_POINTS )
@@ -1473,22 +2017,19 @@
FT_Stream_SeekSet( stream, here );
}
- Fail3:
+ FT_TRACE5(( "\n" ));
+
+ Fail2:
FT_FREE( tuple_coords );
FT_FREE( im_start_coords );
FT_FREE( im_end_coords );
- Fail2:
FT_FRAME_EXIT();
Fail1:
- if ( error )
- {
- FT_FREE( delta_xy );
- *deltas = NULL;
- }
+ FT_FREE( points_org );
+ FT_FREE( has_delta );
- Exit:
return error;
}
@@ -1499,7 +2040,7 @@
/* tt_done_blend */
/* */
/* <Description> */
- /* Frees the blend internal data structure. */
+ /* Free the blend internal data structure. */
/* */
FT_LOCAL_DEF( void )
tt_done_blend( FT_Memory memory,
@@ -1515,7 +2056,7 @@
if ( blend->avar_segment != NULL )
{
- for ( i = 0; i < blend->num_axis; ++i )
+ for ( i = 0; i < blend->num_axis; i++ )
FT_FREE( blend->avar_segment[i].correspondence );
FT_FREE( blend->avar_segment );
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 02:58:15 +0000