forked from minhngoc25a/freetype2
[truetype, type1] Implement `FT_Get_Var_Design_Coordinates'.
* src/truetype/ttgxvar.c (TT_Get_Var_Design): Implement. (TT_Set_Var_Design): Fix tracing. * src/type1/t1load.c (T1_Get_Var_Design): Implement.
This commit is contained in:
Werner Lemberg
parent
f80c4473b6
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e5e3556fa2
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@ -1,3 +1,12 @@
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2016-12-27 Werner Lemberg <wl@gnu.org>
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[truetype, type1] Implement `FT_Get_Var_Design_Coordinates'.
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* src/truetype/ttgxvar.c (TT_Get_Var_Design): Implement.
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(TT_Set_Var_Design): Fix tracing.
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* src/type1/t1load.c (T1_Get_Var_Design): Implement.
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2016-12-24 Werner Lemberg <wl@gnu.org>
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* src/truetype/ttpload.c (tt_face_load_hdmx): Ignore `version'.
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@ -1800,7 +1800,7 @@
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num_coords = mmvar->num_axis;
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}
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/* Axis normalization is a two stage process. First we normalize */
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/* Axis normalization is a two-stage process. First we normalize */
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/* based on the [min,def,max] values for the axis to be [-1,0,1]. */
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/* Then, if there's an `avar' table, we renormalize this range. */
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@ -1859,9 +1859,10 @@
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{
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for ( j = 1; j < (FT_UInt)av->pairCount; j++ )
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{
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FT_TRACE5(( " %.4f\n", normalized[i] / 65536.0 ));
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if ( normalized[i] < av->correspondence[j].fromCoord )
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{
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FT_TRACE5(( " %.4f\n", normalized[i] / 65536.0 ));
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normalized[i] =
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FT_MulDiv( normalized[i] - av->correspondence[j - 1].fromCoord,
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av->correspondence[j].toCoord -
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@ -1883,17 +1884,112 @@
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}
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/*************************************************************************/
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/* */
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/* <Function> */
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/* TT_Get_Var_Design */
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/* */
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/* <Description> */
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/* Get the design coordinates of the currently selected interpolated */
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/* font. */
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/* */
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/* <Input> */
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/* face :: A handle to the source face. */
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/* */
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/* num_coords :: The number of design coordinates to retrieve. If it */
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/* is larger than the number of axes, set the excess */
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/* values to~0. */
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/* */
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/* <Output> */
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/* coords :: The design coordinates array. */
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/* */
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/* <Return> */
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/* FreeType error code. 0~means success. */
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/* */
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FT_LOCAL_DEF( FT_Error )
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TT_Get_Var_Design( TT_Face face,
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FT_UInt num_coords,
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FT_Fixed* coords )
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{
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FT_UNUSED( face );
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FT_UNUSED( num_coords );
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FT_UNUSED( coords );
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FT_Error error = FT_Err_Ok;
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/* TODO: Implement this function. */
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return FT_THROW( Unimplemented_Feature );
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GX_Blend blend;
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FT_MM_Var* mmvar;
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FT_Var_Axis* a;
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FT_UInt i, j, nc;
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if ( !face->blend )
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{
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if ( FT_SET_ERROR( TT_Get_MM_Var( face, NULL ) ) )
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return error;
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}
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blend = face->blend;
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nc = num_coords;
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if ( num_coords > blend->num_axis )
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{
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FT_TRACE2(( "TT_Get_MM_Blend: only using first %d of %d coordinates\n",
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blend->num_axis, num_coords ));
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nc = blend->num_axis;
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}
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for ( i = 0; i < nc; ++i )
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coords[i] = blend->normalizedcoords[i];
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for ( ; i < num_coords; i++ )
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coords[i] = 0;
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if ( !blend->avar_checked )
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ft_var_load_avar( face );
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if ( blend->avar_segment )
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{
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GX_AVarSegment av = blend->avar_segment;
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FT_TRACE5(( "normalized design coordinates"
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" after removing `avar' distortion:\n" ));
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for ( i = 0; i < nc; i++, av++ )
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{
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for ( j = 1; j < (FT_UInt)av->pairCount; j++ )
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{
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if ( coords[i] < av->correspondence[j].toCoord )
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{
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coords[i] =
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FT_MulDiv( coords[i] - av->correspondence[j - 1].toCoord,
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av->correspondence[j].fromCoord -
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av->correspondence[j - 1].fromCoord,
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av->correspondence[j].toCoord -
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av->correspondence[j - 1].toCoord ) +
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av->correspondence[j - 1].fromCoord;
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FT_TRACE5(( " %.4f\n", coords[i] / 65536.0 ));
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break;
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}
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}
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}
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}
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mmvar = blend->mmvar;
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a = mmvar->axis;
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for ( i = 0; i < nc; i++, a++ )
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{
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if ( coords[i] < 0 )
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coords[i] = a->def + FT_MulFix( coords[i],
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a->def - a->minimum );
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else if ( coords[i] > 0 )
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coords[i] = a->def + FT_MulFix( coords[i],
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a->maximum - a->def );
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else
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coords[i] = a->def;
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}
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return FT_Err_Ok;
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}
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@ -551,12 +551,34 @@
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FT_UInt num_coords,
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FT_Fixed* coords )
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{
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FT_UNUSED( face );
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FT_UNUSED( num_coords );
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FT_UNUSED( coords );
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PS_Blend blend = face->blend;
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/* TODO: Implement this function. */
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return FT_THROW( Unimplemented_Feature );
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FT_Fixed axiscoords[4];
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FT_UInt i, nc;
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if ( !blend )
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return FT_THROW( Invalid_Argument );
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mm_weights_unmap( blend->weight_vector,
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axiscoords,
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blend->num_axis );
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nc = num_coords;
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if ( num_coords > blend->num_axis )
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{
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FT_TRACE2(( "T1_Get_Var_Design:"
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" only using first %d of %d coordinates\n",
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blend->num_axis, num_coords ));
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nc = blend->num_axis;
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}
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for ( i = 0; i < nc; i++ )
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coords[i] = mm_axis_unmap( &blend->design_map[i], axiscoords[i] );
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for ( ; i < num_coords; i++ )
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coords[i] = 0;
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return FT_Err_Ok;
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}
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