diff options
Diffstat (limited to 'freetype/src/autofit/aflatin.c')
-rw-r--r-- | freetype/src/autofit/aflatin.c | 80 |
1 files changed, 44 insertions, 36 deletions
diff --git a/freetype/src/autofit/aflatin.c b/freetype/src/autofit/aflatin.c index 36a36896f..893e98673 100644 --- a/freetype/src/autofit/aflatin.c +++ b/freetype/src/autofit/aflatin.c @@ -4,7 +4,7 @@ /* */ /* Auto-fitter hinting routines for latin writing system (body). */ /* */ -/* Copyright 2003-2014 by */ +/* Copyright 2003-2015 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -261,8 +261,8 @@ FT_Pos flats [AF_BLUE_STRING_MAX_LEN]; FT_Pos rounds[AF_BLUE_STRING_MAX_LEN]; - FT_Int num_flats; - FT_Int num_rounds; + FT_UInt num_flats; + FT_UInt num_rounds; AF_LatinBlue blue; FT_Error error; @@ -362,9 +362,10 @@ error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE ); outline = face->glyph->outline; - if ( error || outline.n_points <= 0 ) + /* reject glyphs that don't produce any rendering */ + if ( error || outline.n_points <= 2 ) { - FT_TRACE5(( " U+%04lX contains no outlines\n", ch )); + FT_TRACE5(( " U+%04lX contains no (usable) outlines\n", ch )); continue; } @@ -1791,7 +1792,7 @@ /* Example: the `c' in cour.pfa at size 13 */ if ( edge->serif && edge->link ) - edge->serif = 0; + edge->serif = NULL; } } @@ -1825,7 +1826,7 @@ /* Compute all edges which lie within blue zones. */ - FT_LOCAL_DEF( void ) + static void af_latin_hints_compute_blue_edges( AF_GlyphHints hints, AF_LatinMetrics metrics ) { @@ -1995,11 +1996,20 @@ /* * In `light' hinting mode we disable horizontal hinting completely. * We also do it if the face is italic. + * + * However, if warping is enabled (which only works in `light' hinting + * mode), advance widths get adjusted, too. */ if ( mode == FT_RENDER_MODE_LIGHT || ( face->style_flags & FT_STYLE_FLAG_ITALIC ) != 0 ) scaler_flags |= AF_SCALER_FLAG_NO_HORIZONTAL; +#ifdef AF_CONFIG_OPTION_USE_WARPER + /* get (global) warper flag */ + if ( !metrics->root.globals->module->warping ) + scaler_flags |= AF_SCALER_FLAG_NO_WARPER; +#endif + hints->scaler_flags = scaler_flags; hints->other_flags = other_flags; @@ -2020,13 +2030,13 @@ static FT_Pos af_latin_snap_width( AF_Width widths, - FT_Int count, + FT_UInt count, FT_Pos width ) { - int n; - FT_Pos best = 64 + 32 + 2; - FT_Pos reference = width; - FT_Pos scaled; + FT_UInt n; + FT_Pos best = 64 + 32 + 2; + FT_Pos reference = width; + FT_Pos scaled; for ( n = 0; n < count; n++ ) @@ -2071,8 +2081,8 @@ af_latin_compute_stem_width( AF_GlyphHints hints, AF_Dimension dim, FT_Pos width, - AF_Edge_Flags base_flags, - AF_Edge_Flags stem_flags ) + FT_UInt base_flags, + FT_UInt stem_flags ) { AF_LatinMetrics metrics = (AF_LatinMetrics)hints->metrics; AF_LatinAxis axis = &metrics->axis[dim]; @@ -2239,10 +2249,9 @@ { FT_Pos dist = stem_edge->opos - base_edge->opos; - FT_Pos fitted_width = af_latin_compute_stem_width( - hints, dim, dist, - (AF_Edge_Flags)base_edge->flags, - (AF_Edge_Flags)stem_edge->flags ); + FT_Pos fitted_width = af_latin_compute_stem_width( hints, dim, dist, + base_edge->flags, + stem_edge->flags ); stem_edge->pos = base_edge->pos + fitted_width; @@ -2281,7 +2290,7 @@ /* The main grid-fitting routine. */ - FT_LOCAL_DEF( void ) + static void af_latin_hint_edges( AF_GlyphHints hints, AF_Dimension dim ) { @@ -2334,7 +2343,7 @@ FT_Byte neutral2 = edge2->flags & AF_EDGE_NEUTRAL; - if ( ( neutral && neutral2 ) || neutral2 ) + if ( neutral2 ) { edge2->blue_edge = NULL; edge2->flags &= ~AF_EDGE_NEUTRAL; @@ -2437,10 +2446,9 @@ org_len = edge2->opos - edge->opos; - cur_len = af_latin_compute_stem_width( - hints, dim, org_len, - (AF_Edge_Flags)edge->flags, - (AF_Edge_Flags)edge2->flags ); + cur_len = af_latin_compute_stem_width( hints, dim, org_len, + edge->flags, + edge2->flags ); /* some voodoo to specially round edges for small stem widths; */ /* the idea is to align the center of a stem, then shifting */ @@ -2507,10 +2515,9 @@ org_len = edge2->opos - edge->opos; org_center = org_pos + ( org_len >> 1 ); - cur_len = af_latin_compute_stem_width( - hints, dim, org_len, - (AF_Edge_Flags)edge->flags, - (AF_Edge_Flags)edge2->flags ); + cur_len = af_latin_compute_stem_width( hints, dim, org_len, + edge->flags, + edge2->flags ); if ( edge2->flags & AF_EDGE_DONE ) { @@ -2568,10 +2575,9 @@ org_len = edge2->opos - edge->opos; org_center = org_pos + ( org_len >> 1 ); - cur_len = af_latin_compute_stem_width( - hints, dim, org_len, - (AF_Edge_Flags)edge->flags, - (AF_Edge_Flags)edge2->flags ); + cur_len = af_latin_compute_stem_width( hints, dim, org_len, + edge->flags, + edge2->flags ); cur_pos1 = FT_PIX_ROUND( org_pos ); delta1 = cur_pos1 + ( cur_len >> 1 ) - org_center; @@ -2815,8 +2821,9 @@ /* analyze glyph outline */ #ifdef AF_CONFIG_OPTION_USE_WARPER - if ( metrics->root.scaler.render_mode == FT_RENDER_MODE_LIGHT || - AF_HINTS_DO_HORIZONTAL( hints ) ) + if ( ( metrics->root.scaler.render_mode == FT_RENDER_MODE_LIGHT && + AF_HINTS_DO_WARP( hints ) ) || + AF_HINTS_DO_HORIZONTAL( hints ) ) #else if ( AF_HINTS_DO_HORIZONTAL( hints ) ) #endif @@ -2848,7 +2855,8 @@ { #ifdef AF_CONFIG_OPTION_USE_WARPER if ( dim == AF_DIMENSION_HORZ && - metrics->root.scaler.render_mode == FT_RENDER_MODE_LIGHT ) + metrics->root.scaler.render_mode == FT_RENDER_MODE_LIGHT && + AF_HINTS_DO_WARP( hints ) ) { AF_WarperRec warper; FT_Fixed scale; @@ -2861,7 +2869,7 @@ scale, delta ); continue; } -#endif +#endif /* AF_CONFIG_OPTION_USE_WARPER */ if ( ( dim == AF_DIMENSION_HORZ && AF_HINTS_DO_HORIZONTAL( hints ) ) || ( dim == AF_DIMENSION_VERT && AF_HINTS_DO_VERTICAL( hints ) ) ) |