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[psaux] Extend Adobe interpreter. (hsbw, sbw) 

* src/psaux/psintrp.c (cf2_doStems, cf2_interpT2CharString):
Remove unused line.
<hmoveto, vmoveto, rmoveto>: hsbw or sbw must be the first operation in a
Type 1 charstring. Implement this check.
<hsbw, sbw>: Fix data access and add correction for left sidebearing.
This commit is contained in:
Ewald Hew 2017-07-24 11:37:40 +08:00
parent d980305f11
commit df637f79df
1 changed files with 57 additions and 43 deletions
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100
src/psaux/psintrp.c
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@ -290,8 +290,12 @@
/* variable accumulates delta values from operand stack */
CF2_Fixed position = hintOffset;
if ( hasWidthArg && !*haveWidth )
if ( font->isT1 && !font->decoder->flex_state && !*haveWidth )
{
FT_ERROR(( "cf2_doStems (Type 1 mode):"
" No width. Use hsbw/sbw as first op\n" ));
}
if ( !font->isT1 && hasWidthArg && !*haveWidth )
*width = cf2_stack_getReal( opStack, 0 ) +
cf2_getNominalWidthX( font->decoder );
@ -485,7 +489,6 @@
CF2_Fixed nominalWidthX = cf2_getNominalWidthX( decoder );
/* Stuff for Type 1 */
FT_Pos orig_x, orig_y;
FT_Int known_othersubr_result_cnt = 0;
FT_Int unknown_othersubr_result_cnt = 0;
FT_Bool large_int;
@ -798,6 +801,12 @@
case cf2_cmdVMOVETO:
FT_TRACE4(( " vmoveto\n" ));
if ( font->isT1 && !decoder->flex_state && !haveWidth )
{
FT_ERROR(( "cf2_interpT2CharString (Type 1 mode):"
" No width. Use hsbw/sbw as first op\n" ));
}
if ( cf2_stack_count( opStack ) > 1 && !haveWidth )
*width = ADD_INT32( cf2_stack_getReal( opStack, 0 ),
nominalWidthX );
@ -808,13 +817,6 @@
if ( font->decoder->width_only )
goto exit;
if ( font->isT1 && !decoder->flex_state )
{
if ( builder->parse_state == T1_Parse_Start )
goto Syntax_Error;
builder->parse_state = T1_Parse_Have_Moveto;
}
curY = ADD_INT32( curY, cf2_stack_popFixed( opStack ) );
cf2_glyphpath_moveTo( &glyphPath, curX, curY );
@ -1232,26 +1234,35 @@
FT_TRACE4(( " unknown op (12, %d)\n", op2 ));
else
{
CF2_Fixed lsb_x, lsb_y;
PS_Builder* builder;
FT_TRACE4(( " sbw" ));
builder->parse_state = T1_Parse_Have_Width;
builder = &decoder->builder;
builder->left_bearing.x = ADD_LONG( builder->left_bearing.x,
top[0] );
builder->left_bearing.y = ADD_LONG( builder->left_bearing.y,
top[1] );
builder->advance->y = cf2_stack_popFixed( opStack );
builder->advance->x = cf2_stack_popFixed( opStack );
builder->advance.x = top[2];
builder->advance.y = top[3];
lsb_y = cf2_stack_popFixed( opStack );
lsb_x = cf2_stack_popFixed( opStack );
x = ADD_LONG( builder->pos_x, top[0] );
y = ADD_LONG( builder->pos_y, top[1] );
builder->left_bearing->x = ADD_INT32( builder->left_bearing->x,
lsb_x );
builder->left_bearing->y = ADD_INT32( builder->left_bearing->y,
lsb_y );
haveWidth = TRUE;
/* the `metrics_only' indicates that we only want to compute */
/* the glyph's metrics (lsb + advance width), not load the */
/* rest of it; so exit immediately */
if ( builder->metrics_only )
return FT_Err_Ok;
goto exit;
curX = ADD_INT32( curX, lsb_x );
curY = ADD_INT32( curY, lsb_y );
}
}
break;
@ -1643,26 +1654,31 @@
}
else
{
CF2_Fixed lsb_x;
PS_Builder* builder;
FT_TRACE4(( " hsbw" ));
builder->parse_state = T1_Parse_Have_Width;
builder = &decoder->builder;
builder->left_bearing.x = ADD_LONG( builder->left_bearing.x,
top[0] );
builder->advance->x = cf2_stack_popFixed( opStack );
builder->advance->y = 0;
builder->advance.x = top[1];
builder->advance.y = 0;
lsb_x = cf2_stack_popFixed( opStack );
orig_x = x = ADD_LONG( builder->pos_x, top[0] );
orig_y = y = builder->pos_y;
builder->left_bearing->x = ADD_INT32( builder->left_bearing->x,
lsb_x );
FT_UNUSED( orig_y );
haveWidth = TRUE;
/* the `metrics_only' indicates that we only want to compute */
/* the glyph's metrics (lsb + advance width), not load the */
/* rest of it; so exit immediately */
if ( builder->metrics_only )
return FT_Err_Ok;
goto exit;
curX = ADD_INT32( curX, lsb_x );
}
break;
@ -1821,6 +1837,12 @@
case cf2_cmdRMOVETO:
FT_TRACE4(( " rmoveto\n" ));
if ( font->isT1 && !decoder->flex_state && !haveWidth )
{
FT_ERROR(( "cf2_interpT2CharString (Type 1 mode):"
" No width. Use hsbw/sbw as first op\n" ));
}
if ( cf2_stack_count( opStack ) > 2 && !haveWidth )
*width = ADD_INT32( cf2_stack_getReal( opStack, 0 ),
nominalWidthX );
@ -1831,13 +1853,6 @@
if ( font->decoder->width_only )
goto exit;
if ( font->isT1 && !decoder->flex_state )
{
if ( builder->parse_state == T1_Parse_Start )
goto Syntax_Error;
builder->parse_state = T1_Parse_Have_Moveto;
}
curY = ADD_INT32( curY, cf2_stack_popFixed( opStack ) );
curX = ADD_INT32( curX, cf2_stack_popFixed( opStack ) );
@ -1848,6 +1863,12 @@
case cf2_cmdHMOVETO:
FT_TRACE4(( " hmoveto\n" ));
if ( font->isT1 && !decoder->flex_state && !haveWidth )
{
FT_ERROR(( "cf2_interpT2CharString (Type 1 mode):"
" No width. Use hsbw/sbw as first op\n" ));
}
if ( cf2_stack_count( opStack ) > 1 && !haveWidth )
*width = ADD_INT32( cf2_stack_getReal( opStack, 0 ),
nominalWidthX );
@ -1858,13 +1879,6 @@
if ( font->decoder->width_only )
goto exit;
if ( font->isT1 && !decoder->flex_state )
{
if ( builder->parse_state == T1_Parse_Start )
goto Syntax_Error;
builder->parse_state = T1_Parse_Have_Moveto;
}
curX = ADD_INT32( curX, cf2_stack_popFixed( opStack ) );
cf2_glyphpath_moveTo( &glyphPath, curX, curY );