summaryrefslogtreecommitdiffstats
path: root/src/autofit/aflatin.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/autofit/aflatin.c')
-rw-r--r--src/autofit/aflatin.c95
1 files changed, 50 insertions, 45 deletions
diff --git a/src/autofit/aflatin.c b/src/autofit/aflatin.c
index a1f2b33..893e986 100644
--- a/src/autofit/aflatin.c
+++ b/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;
}
@@ -1293,17 +1294,19 @@
/* this is the start of a new segment! */
segment_dir = (AF_Direction)point->out_dir;
- /* clear all segment fields */
error = af_axis_hints_new_segment( axis, memory, &segment );
if ( error )
goto Exit;
- segment[0] = seg0;
+ /* clear all segment fields */
+ segment[0] = seg0;
+
segment->dir = (FT_Char)segment_dir;
min_pos = max_pos = point->u;
segment->first = point;
segment->last = point;
- on_edge = 1;
+
+ on_edge = 1;
}
point = point->next;
@@ -1327,9 +1330,6 @@
FT_Pos last_v = last->v;
- if ( first == last )
- continue;
-
if ( first_v < last_v )
{
AF_Point p;
@@ -1405,9 +1405,7 @@
/* now compare each segment to the others */
for ( seg1 = segments; seg1 < segment_limit; seg1++ )
{
- /* the fake segments are introduced to hint the metrics -- */
- /* we must never link them to anything */
- if ( seg1->dir != axis->major_dir || seg1->first == seg1->last )
+ if ( seg1->dir != axis->major_dir )
continue;
/* search for stems having opposite directions, */
@@ -1794,7 +1792,7 @@
/* Example: the `c' in cour.pfa at size 13 */
if ( edge->serif && edge->link )
- edge->serif = 0;
+ edge->serif = NULL;
}
}
@@ -1828,7 +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 )
{
@@ -1998,11 +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;
@@ -2023,13 +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++ )
@@ -2074,8 +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];
@@ -2242,10 +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;
@@ -2284,7 +2290,7 @@
/* The main grid-fitting routine. */
- FT_LOCAL_DEF( void )
+ static void
af_latin_hint_edges( AF_GlyphHints hints,
AF_Dimension dim )
{
@@ -2337,7 +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;
@@ -2440,10 +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 */
@@ -2510,10 +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 )
{
@@ -2571,10 +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;
@@ -2818,8 +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
@@ -2851,7 +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;
@@ -2864,7 +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 ) ) )
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 17:47:06 +0000