aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/freetype2/src/autofit
diff options
context:
space:
mode:
Diffstat (limited to 'nx-X11/extras/freetype2/src/autofit')
-rw-r--r--nx-X11/extras/freetype2/src/autofit/Jamfile18
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afangles.c302
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afdummy.c37
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afdummy.h18
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afglobal.c236
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afglobal.h41
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afhints.c989
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afhints.h248
-rw-r--r--nx-X11/extras/freetype2/src/autofit/aflatin.c1871
-rw-r--r--nx-X11/extras/freetype2/src/autofit/aflatin.h169
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afloader.c467
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afloader.h50
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afmodule.c70
-rw-r--r--nx-X11/extras/freetype2/src/autofit/afmodule.h16
-rw-r--r--nx-X11/extras/freetype2/src/autofit/aftypes.h290
-rw-r--r--nx-X11/extras/freetype2/src/autofit/autofit.c9
16 files changed, 4831 insertions, 0 deletions
diff --git a/nx-X11/extras/freetype2/src/autofit/Jamfile b/nx-X11/extras/freetype2/src/autofit/Jamfile
new file mode 100644
index 000000000..3063f2371
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/Jamfile
@@ -0,0 +1,18 @@
+SubDir FT2_TOP src autofit ;
+
+{
+ local _sources ;
+
+ if $(FT2_MULTI)
+ {
+ _sources = afangles afglobal afhints aflatin afloader afmodule afdummy ;
+ }
+ else
+ {
+ _sources = autofit ;
+ }
+
+ Library $(FT2_LIB) : $(_sources).c ;
+}
+
+# end of src/autofir Jamfile
diff --git a/nx-X11/extras/freetype2/src/autofit/afangles.c b/nx-X11/extras/freetype2/src/autofit/afangles.c
new file mode 100644
index 000000000..e42c962d1
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afangles.c
@@ -0,0 +1,302 @@
+#include "aftypes.h"
+
+/*
+ * a python script used to generate the following table
+ *
+
+import sys, math
+
+units = 256
+scale = units/math.pi
+comma = ""
+
+print ""
+print "table of arctan( 1/2^n ) for PI = " + repr(units/65536.0) + " units"
+
+r = [-1] + range(32)
+
+for n in r:
+
+ if n >= 0:
+ x = 1.0/(2.0**n) # tangent value
+ else:
+ x = 2.0**(-n)
+
+ angle = math.atan(x) # arctangent
+ angle2 = angle*scale # arctangent in FT_Angle units
+
+ # determine which integer value for angle gives the best tangent
+ lo = int(angle2)
+ hi = lo + 1
+ tlo = math.tan(lo/scale)
+ thi = math.tan(hi/scale)
+
+ errlo = abs( tlo - x )
+ errhi = abs( thi - x )
+
+ angle2 = hi
+ if errlo < errhi:
+ angle2 = lo
+
+ if angle2 <= 0:
+ break
+
+ sys.stdout.write( comma + repr( int(angle2) ) )
+ comma = ", "
+
+*
+* end of python script
+*/
+
+
+ /* this table was generated for AF_ANGLE_PI = 256 */
+#define AF_ANGLE_MAX_ITERS 8
+#define AF_TRIG_MAX_ITERS 8
+
+ static const FT_Fixed
+ af_angle_arctan_table[9] =
+ {
+ 90, 64, 38, 20, 10, 5, 3, 1, 1
+ };
+
+
+ static FT_Int
+ af_angle_prenorm( FT_Vector* vec )
+ {
+ FT_Fixed x, y, z;
+ FT_Int shift;
+
+
+ x = vec->x;
+ y = vec->y;
+
+ z = ( ( x >= 0 ) ? x : - x ) | ( (y >= 0) ? y : -y );
+ shift = 0;
+
+ if ( z < ( 1L << 27 ) )
+ {
+ do
+ {
+ shift++;
+ z <<= 1;
+ } while ( z < ( 1L << 27 ) );
+
+ vec->x = x << shift;
+ vec->y = y << shift;
+ }
+ else if ( z > ( 1L << 28 ) )
+ {
+ do
+ {
+ shift++;
+ z >>= 1;
+ } while ( z > ( 1L << 28 ) );
+
+ vec->x = x >> shift;
+ vec->y = y >> shift;
+ shift = -shift;
+ }
+ return shift;
+ }
+
+
+ static void
+ af_angle_pseudo_polarize( FT_Vector* vec )
+ {
+ FT_Fixed theta;
+ FT_Fixed yi, i;
+ FT_Fixed x, y;
+ const FT_Fixed *arctanptr;
+
+
+ x = vec->x;
+ y = vec->y;
+
+ /* Get the vector into the right half plane */
+ theta = 0;
+ if ( x < 0 )
+ {
+ x = -x;
+ y = -y;
+ theta = AF_ANGLE_PI;
+ }
+
+ if ( y > 0 )
+ theta = - theta;
+
+ arctanptr = af_angle_arctan_table;
+
+ if ( y < 0 )
+ {
+ /* Rotate positive */
+ yi = y + ( x << 1 );
+ x = x - ( y << 1 );
+ y = yi;
+ theta -= *arctanptr++; /* Subtract angle */
+ }
+ else
+ {
+ /* Rotate negative */
+ yi = y - ( x << 1 );
+ x = x + ( y << 1 );
+ y = yi;
+ theta += *arctanptr++; /* Add angle */
+ }
+
+ i = 0;
+ do
+ {
+ if ( y < 0 )
+ {
+ /* Rotate positive */
+ yi = y + ( x >> i );
+ x = x - ( y >> i );
+ y = yi;
+ theta -= *arctanptr++;
+ }
+ else
+ {
+ /* Rotate negative */
+ yi = y - ( x >> i );
+ x = x + ( y >> i );
+ y = yi;
+ theta += *arctanptr++;
+ }
+ } while ( ++i < AF_TRIG_MAX_ITERS );
+
+#if 0
+ /* round theta */
+ if ( theta >= 0 )
+ theta = FT_PAD_ROUND( theta, 2 );
+ else
+ theta = - FT_PAD_ROUND( -theta, 2 );
+#endif
+
+ vec->x = x;
+ vec->y = theta;
+ }
+
+
+ /* documentation is in fttrigon.h */
+
+ FT_LOCAL_DEF( AF_Angle )
+ af_angle_atan( FT_Fixed dx,
+ FT_Fixed dy )
+ {
+ FT_Vector v;
+
+
+ if ( dx == 0 && dy == 0 )
+ return 0;
+
+ v.x = dx;
+ v.y = dy;
+ af_angle_prenorm( &v );
+ af_angle_pseudo_polarize( &v );
+
+ return v.y;
+ }
+
+
+
+ FT_LOCAL_DEF( AF_Angle )
+ af_angle_diff( AF_Angle angle1,
+ AF_Angle angle2 )
+ {
+ AF_Angle delta = angle2 - angle1;
+
+ delta %= AF_ANGLE_2PI;
+ if ( delta < 0 )
+ delta += AF_ANGLE_2PI;
+
+ if ( delta > AF_ANGLE_PI )
+ delta -= AF_ANGLE_2PI;
+
+ return delta;
+ }
+
+
+ /* well, this needs to be somewhere, right :-)
+ */
+
+ FT_LOCAL_DEF( void )
+ af_sort_pos( FT_UInt count,
+ FT_Pos* table )
+ {
+ FT_UInt i, j;
+ FT_Pos swap;
+
+
+ for ( i = 1; i < count; i++ )
+ {
+ for ( j = i; j > 0; j-- )
+ {
+ if ( table[j] > table[j - 1] )
+ break;
+
+ swap = table[j];
+ table[j] = table[j - 1];
+ table[j - 1] = swap;
+ }
+ }
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_sort_widths( FT_UInt count,
+ AF_Width table )
+ {
+ FT_UInt i, j;
+ AF_WidthRec swap;
+
+
+ for ( i = 1; i < count; i++ )
+ {
+ for ( j = i; j > 0; j-- )
+ {
+ if ( table[j].org > table[j - 1].org )
+ break;
+
+ swap = table[j];
+ table[j] = table[j - 1];
+ table[j - 1] = swap;
+ }
+ }
+ }
+
+
+#ifdef TEST
+#include <stdio.h>
+#include <math.h>
+
+int main( void )
+{
+ int angle;
+ int dist;
+
+ for ( dist = 100; dist < 1000; dist++ )
+ {
+ for ( angle = AF_ANGLE_PI; angle < AF_ANGLE_2PI*4; angle++ )
+ {
+ double a = (angle*3.1415926535)/(1.0*AF_ANGLE_PI);
+ int dx, dy, angle1, angle2, delta;
+
+ dx = dist * cos(a);
+ dy = dist * sin(a);
+
+ angle1 = ((atan2(dy,dx)*AF_ANGLE_PI)/3.1415926535);
+ angle2 = af_angle_atan( dx, dy );
+ delta = (angle2 - angle1) % AF_ANGLE_2PI;
+ if ( delta < 0 )
+ delta = -delta;
+
+ if ( delta >= 2 )
+ {
+ printf( "dist:%4d angle:%4d => (%4d,%4d) angle1:%4d angle2:%4d\n",
+ dist, angle, dx, dy, angle1, angle2 );
+ }
+ }
+ }
+ return 0;
+}
+#endif
diff --git a/nx-X11/extras/freetype2/src/autofit/afdummy.c b/nx-X11/extras/freetype2/src/autofit/afdummy.c
new file mode 100644
index 000000000..2d5f89839
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afdummy.c
@@ -0,0 +1,37 @@
+#include "afdummy.h"
+#include "afhints.h"
+
+
+ static FT_Error
+ af_dummy_hints_init( AF_GlyphHints hints,
+ AF_ScriptMetrics metrics )
+ {
+ af_glyph_hints_rescale( hints,
+ metrics );
+ return 0;
+ }
+
+ static FT_Error
+ af_dummy_hints_apply( AF_GlyphHints hints,
+ FT_Outline* outline )
+ {
+ FT_UNUSED( hints );
+ FT_UNUSED( outline );
+
+ return 0;
+ }
+
+
+ FT_LOCAL_DEF( const AF_ScriptClassRec ) af_dummy_script_class =
+ {
+ AF_SCRIPT_NONE,
+ NULL,
+
+ sizeof( AF_ScriptMetricsRec ),
+ (AF_Script_InitMetricsFunc) NULL,
+ (AF_Script_ScaleMetricsFunc) NULL,
+ (AF_Script_DoneMetricsFunc) NULL,
+
+ (AF_Script_InitHintsFunc) af_dummy_hints_init,
+ (AF_Script_ApplyHintsFunc) af_dummy_hints_apply
+ };
diff --git a/nx-X11/extras/freetype2/src/autofit/afdummy.h b/nx-X11/extras/freetype2/src/autofit/afdummy.h
new file mode 100644
index 000000000..f4594c0f9
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afdummy.h
@@ -0,0 +1,18 @@
+#ifndef __AFDUMMY_H__
+#define __AFDUMMY_H__
+
+#include "aftypes.h"
+
+FT_BEGIN_HEADER
+
+ /* a dummy script metrics class used when no hinting should
+ * be performed. This is the default for non-latin glyphs !
+ */
+
+ FT_LOCAL( const AF_ScriptClassRec ) af_dummy_script_class;
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFDUMMY_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/afglobal.c b/nx-X11/extras/freetype2/src/autofit/afglobal.c
new file mode 100644
index 000000000..54852ab31
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afglobal.c
@@ -0,0 +1,236 @@
+#include "afglobal.h"
+#include "afdummy.h"
+#include "aflatin.h"
+
+ /* populate this list when you add new scripts
+ */
+ static AF_ScriptClass const af_script_classes[] =
+ {
+ & af_dummy_script_class,
+ & af_latin_script_class,
+
+ NULL /* do not remove */
+ };
+
+#define AF_SCRIPT_LIST_DEFAULT 1 /* index of default script in 'af_script_classes' */
+#define AF_SCRIPT_LIST_NONE 255 /* indicates an uncovered glyph */
+
+ /*
+ * note that glyph_scripts[] is used to map each glyph into
+ * an index into the 'af_script_classes' array.
+ *
+ */
+ typedef struct AF_FaceGlobalsRec_
+ {
+ FT_Face face;
+ FT_UInt glyph_count; /* same as face->num_glyphs */
+ FT_Byte* glyph_scripts;
+
+ AF_ScriptMetrics metrics[ AF_SCRIPT_MAX ];
+
+ } AF_FaceGlobalsRec;
+
+
+
+
+ /* this function is used to compute the script index of each glyph
+ * within a given face
+ */
+ static FT_Error
+ af_face_globals_compute_script_coverage( AF_FaceGlobals globals )
+ {
+ FT_Error error = 0;
+ FT_Face face = globals->face;
+ FT_CharMap old_charmap = face->charmap;
+ FT_Byte* gscripts = globals->glyph_scripts;
+ FT_UInt ss;
+
+ /* the value 255 means "uncovered glyph"
+ */
+ FT_MEM_SET( globals->glyph_scripts,
+ AF_SCRIPT_LIST_NONE,
+ globals->glyph_count );
+
+ error = FT_Select_Charmap( face, FT_ENCODING_UNICODE );
+ if ( error )
+ {
+ /* ignore this error, we'll simply use Latin as the standard
+ * script. XXX: Shouldn't we rather disable hinting ??
+ */
+ error = 0;
+ goto Exit;
+ }
+
+ /* scan each script in a Unicode charmap
+ */
+ for ( ss = 0; af_script_classes[ss]; ss++ )
+ {
+ AF_ScriptClass clazz = af_script_classes[ss];
+ AF_Script_UniRange range;
+
+ if ( clazz->script_uni_ranges == NULL )
+ continue;
+
+ /* scan all unicode points in the range, and set the corresponding
+ * glyph script index
+ */
+ for ( range = clazz->script_uni_ranges; range->first != 0; range++ )
+ {
+ FT_ULong charcode = range->first;
+ FT_UInt gindex;
+
+ gindex = FT_Get_Char_Index( face, charcode );
+
+ if ( gindex != 0 &&
+ gindex < globals->glyph_count &&
+ gscripts[ gindex ] == AF_SCRIPT_LIST_NONE )
+ {
+ gscripts[ gindex ] = (FT_Byte) ss;
+ }
+ for (;;)
+ {
+ charcode = FT_Get_Next_Char( face, charcode, &gindex );
+
+ if ( gindex == 0 || charcode > range->last )
+ break;
+
+ if ( gindex < globals->glyph_count &&
+ gscripts[ gindex ] == AF_SCRIPT_LIST_NONE )
+ {
+ gscripts[ gindex ] = (FT_Byte) ss;
+ }
+ }
+ }
+ }
+
+ Exit:
+ /* by default, all uncovered glyphs are set to the latin script
+ * XXX: shouldnt' we disable hinting or do something similar ?
+ */
+ {
+ FT_UInt nn;
+
+ for ( nn = 0; nn < globals->glyph_count; nn++ )
+ {
+ if ( gscripts[ nn ] == AF_SCRIPT_LIST_NONE )
+ gscripts[ nn ] = AF_SCRIPT_LIST_DEFAULT;
+ }
+ }
+
+ FT_Set_Charmap( face, old_charmap );
+ return error;
+ }
+
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_face_globals_new( FT_Face face,
+ AF_FaceGlobals *aglobals )
+ {
+ FT_Error error;
+ FT_Memory memory;
+ AF_FaceGlobals globals;
+
+ memory = face->memory;
+
+ if ( !FT_ALLOC( globals, sizeof(*globals) +
+ face->num_glyphs*sizeof(FT_Byte) ) )
+ {
+ globals->face = face;
+ globals->glyph_count = face->num_glyphs;
+ globals->glyph_scripts = (FT_Byte*)( globals+1 );
+
+ error = af_face_globals_compute_script_coverage( globals );
+ if ( error )
+ {
+ af_face_globals_free( globals );
+ globals = NULL;
+ }
+ }
+
+ *aglobals = globals;
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_face_globals_free( AF_FaceGlobals globals )
+ {
+ if ( globals )
+ {
+ FT_Memory memory = globals->face->memory;
+ FT_UInt nn;
+
+ for ( nn = 0; nn < AF_SCRIPT_MAX; nn++ )
+ {
+ if ( globals->metrics[nn] )
+ {
+ AF_ScriptClass clazz = af_script_classes[nn];
+
+ FT_ASSERT( globals->metrics[nn]->clazz == clazz );
+
+ if ( clazz->script_metrics_done )
+ clazz->script_metrics_done( globals->metrics[nn] );
+
+ FT_FREE( globals->metrics[nn] );
+ }
+ }
+
+ globals->glyph_count = 0;
+ globals->glyph_scripts = NULL; /* no need to free this one !! */
+ globals->face = NULL;
+ FT_FREE( globals );
+ }
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_face_globals_get_metrics( AF_FaceGlobals globals,
+ FT_UInt gindex,
+ AF_ScriptMetrics *ametrics )
+ {
+ AF_ScriptMetrics metrics = NULL;
+ FT_UInt index;
+ AF_ScriptClass clazz;
+ FT_Error error = 0;
+
+ if ( gindex >= globals->glyph_count )
+ {
+ error = FT_Err_Invalid_Argument;
+ goto Exit;
+ }
+
+ index = globals->glyph_scripts[ gindex ];
+ clazz = af_script_classes[ index ];
+ metrics = globals->metrics[ clazz->script ];
+ if ( metrics == NULL )
+ {
+ /* create the global metrics object when needed
+ */
+ FT_Memory memory = globals->face->memory;
+
+ if ( FT_ALLOC( metrics, clazz->script_metrics_size ) )
+ goto Exit;
+
+ metrics->clazz = clazz;
+
+ if ( clazz->script_metrics_init )
+ {
+ error = clazz->script_metrics_init( metrics, globals->face );
+ if ( error )
+ {
+ if ( clazz->script_metrics_done )
+ clazz->script_metrics_done( metrics );
+
+ FT_FREE( metrics );
+ goto Exit;
+ }
+ }
+
+ globals->metrics[ clazz->script ] = metrics;
+ }
+
+ Exit:
+ *ametrics = metrics;
+ return error;
+ }
diff --git a/nx-X11/extras/freetype2/src/autofit/afglobal.h b/nx-X11/extras/freetype2/src/autofit/afglobal.h
new file mode 100644
index 000000000..64f35c3ff
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afglobal.h
@@ -0,0 +1,41 @@
+#ifndef __AF_GLOBAL_H__
+#define __AF_GLOBAL_H__
+
+#include "aftypes.h"
+
+FT_BEGIN_HEADER
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** F A C E G L O B A L S *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+
+ /*
+ * models the global hints data for a given face, decomposed into
+ * script-specific items..
+ *
+ */
+ typedef struct AF_FaceGlobalsRec_* AF_FaceGlobals;
+
+
+ FT_LOCAL( FT_Error )
+ af_face_globals_new( FT_Face face,
+ AF_FaceGlobals *aglobals );
+
+ FT_LOCAL( FT_Error )
+ af_face_globals_get_metrics( AF_FaceGlobals globals,
+ FT_UInt gindex,
+ AF_ScriptMetrics *ametrics );
+
+ FT_LOCAL( void )
+ af_face_globals_free( AF_FaceGlobals globals );
+
+ /* */
+
+FT_END_HEADER
+
+#endif /* __AF_GLOBALS_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/afhints.c b/nx-X11/extras/freetype2/src/autofit/afhints.c
new file mode 100644
index 000000000..a1a50dce3
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afhints.c
@@ -0,0 +1,989 @@
+#include "afhints.h"
+
+#ifdef AF_DEBUG
+
+#include <stdio.h>
+
+ static const char* af_dir_str( AF_Direction dir )
+ {
+ const char* result;
+
+ switch (dir)
+ {
+ case AF_DIR_UP: result = "up"; break;
+ case AF_DIR_DOWN: result = "down"; break;
+ case AF_DIR_LEFT: result = "left"; break;
+ case AF_DIR_RIGHT: result = "right"; break;
+ default: result = "none";
+ }
+ return result;
+ }
+
+#define AF_INDEX_NUM(ptr,base) ( (ptr) ? ((ptr)-(base)) : -1 )
+
+ void
+ af_glyph_hints_dump_points( AF_GlyphHints hints )
+ {
+ AF_Point points = hints->points;
+ AF_Point limit = points + hints->num_points;
+ AF_Point point;
+
+ printf( "Table of points:\n" );
+ printf( " [ index | xorg | yorg | xscale | yscale | xfit | yfit | flags ]\n" );
+ for ( point = points; point < limit; point++ )
+ {
+ printf( " [ %5d | %5d | %5d | %-5.2f | %-5.2f | %-5.2f | %-5.2f | %c%c%c%c%c%c ]\n",
+ point - points,
+ point->fx,
+ point->fy,
+ point->ox/64.0,
+ point->oy/64.0,
+ point->x/64.0,
+ point->y/64.0,
+ (point->flags & AF_FLAG_WEAK_INTERPOLATION) ? 'w' : ' ',
+ (point->flags & AF_FLAG_INFLECTION) ? 'i' : ' ',
+ (point->flags & AF_FLAG_EXTREMA_X) ? '<' : ' ',
+ (point->flags & AF_FLAG_EXTREMA_Y) ? 'v' : ' ',
+ (point->flags & AF_FLAG_ROUND_X) ? '(' : ' ',
+ (point->flags & AF_FLAG_ROUND_Y) ? 'u' : ' '
+ );
+ }
+ printf( "\n" );
+ }
+
+
+ /* A function used to dump the array of linked segments */
+ void
+ af_glyph_hints_dump_segments( AF_GlyphHints hints )
+ {
+ AF_Point points = hints->points;
+ FT_Int dimension;
+
+ for ( dimension = 1; dimension >= 0; dimension-- )
+ {
+ AF_AxisHints axis = &hints->axis[dimension];
+ AF_Segment segments = axis->segments;
+ AF_Segment limit = segments + axis->num_segments;
+ AF_Segment seg;
+
+
+ printf ( "Table of %s segments:\n",
+ dimension == AF_DIMENSION_HORZ ? "vertical" : "horizontal" );
+ printf ( " [ index | pos | dir | link | serif |"
+ " numl | first | start ]\n" );
+
+ for ( seg = segments; seg < limit; seg++ )
+ {
+ printf ( " [ %5d | %4d | %5s | %4d | %5d | %4d | %5d | %5d ]\n",
+ seg - segments,
+ (int)seg->pos,
+ af_dir_str( seg->dir ),
+ AF_INDEX_NUM( seg->link, segments ),
+ AF_INDEX_NUM( seg->serif, segments ),
+ (int)seg->num_linked,
+ seg->first - points,
+ seg->last - points );
+ }
+ printf( "\n" );
+ }
+ }
+
+
+ void
+ af_glyph_hints_dump_edges( AF_GlyphHints hints )
+ {
+ FT_Int dimension;
+
+ for ( dimension = 1; dimension >= 0; dimension-- )
+ {
+ AF_AxisHints axis = &hints->axis[ dimension ];
+ AF_Edge edges = axis->edges;
+ AF_Edge limit = edges + axis->num_edges;
+ AF_Edge edge;
+
+ /* note: AF_DIMENSION_HORZ corresponds to _vertical_ edges
+ * since they have constant X coordinate
+ */
+ printf ( "Table of %s edges:\n",
+ dimension == AF_DIMENSION_HORZ ? "vertical" : "horizontal" );
+ printf ( " [ index | pos | dir | link |"
+ " serif | blue | opos | pos ]\n" );
+
+ for ( edge = edges; edge < limit; edge++ )
+ {
+ printf ( " [ %5d | %4d | %5s | %4d | %5d | %c | %5.2f | %5.2f ]\n",
+ edge - edges,
+ (int)edge->fpos,
+ af_dir_str( edge->dir ),
+ AF_INDEX_NUM( edge->link, edges ),
+ AF_INDEX_NUM( edge->serif, edges ),
+ edge->blue_edge ? 'y' : 'n',
+ edge->opos / 64.0,
+ edge->pos / 64.0 );
+ }
+
+ printf( "\n" );
+ }
+ }
+
+
+
+#endif /* AF_DEBUG */
+
+
+ /* compute the direction value of a given vector */
+ FT_LOCAL_DEF( AF_Direction )
+ af_direction_compute( FT_Pos dx,
+ FT_Pos dy )
+ {
+ AF_Direction dir;
+ FT_Pos ax = FT_ABS( dx );
+ FT_Pos ay = FT_ABS( dy );
+
+
+ dir = AF_DIR_NONE;
+
+ /* atan(1/12) == 4.7 degrees */
+
+ /* test for vertical direction */
+ if ( ax * 12 < ay )
+ {
+ dir = dy > 0 ? AF_DIR_UP : AF_DIR_DOWN;
+ }
+ /* test for horizontal direction */
+ else if ( ay * 12 < ax )
+ {
+ dir = dx > 0 ? AF_DIR_RIGHT : AF_DIR_LEFT;
+ }
+
+ return dir;
+ }
+
+
+ /* compute all inflex points in a given glyph */
+ static void
+ af_glyph_hints_compute_inflections( AF_GlyphHints hints )
+ {
+ AF_Point* contour = hints->contours;
+ AF_Point* contour_limit = contour + hints->num_contours;
+
+
+ /* do each contour separately */
+ for ( ; contour < contour_limit; contour++ )
+ {
+ AF_Point point = contour[0];
+ AF_Point first = point;
+ AF_Point start = point;
+ AF_Point end = point;
+ AF_Point before;
+ AF_Point after;
+ AF_Angle angle_in, angle_seg, angle_out;
+ AF_Angle diff_in, diff_out;
+ FT_Int finished = 0;
+
+
+ /* compute first segment in contour */
+ first = point;
+
+ start = end = first;
+ do
+ {
+ end = end->next;
+ if ( end == first )
+ goto Skip;
+
+ } while ( end->fx == first->fx && end->fy == first->fy );
+
+ angle_seg = af_angle_atan( end->fx - start->fx,
+ end->fy - start->fy );
+
+ /* extend the segment start whenever possible */
+ before = start;
+ do
+ {
+ do
+ {
+ start = before;
+ before = before->prev;
+ if ( before == first )
+ goto Skip;
+
+ } while ( before->fx == start->fx && before->fy == start->fy );
+
+ angle_in = af_angle_atan( start->fx - before->fx,
+ start->fy - before->fy );
+
+ } while ( angle_in == angle_seg );
+
+ first = start;
+ diff_in = af_angle_diff( angle_in, angle_seg );
+
+ /* now, process all segments in the contour */
+ do
+ {
+ /* first, extend current segment's end whenever possible */
+ after = end;
+ do
+ {
+ do
+ {
+ end = after;
+ after = after->next;
+ if ( after == first )
+ finished = 1;
+
+ } while ( end->fx == after->fx && end->fy == after->fy );
+
+ angle_out = af_angle_atan( after->fx - end->fx,
+ after->fy - end->fy );
+
+ } while ( angle_out == angle_seg );
+
+ diff_out = af_angle_diff( angle_seg, angle_out );
+
+ if ( ( diff_in ^ diff_out ) < 0 )
+ {
+ /* diff_in and diff_out have different signs, we have */
+ /* inflection points here... */
+ do
+ {
+ start->flags |= AF_FLAG_INFLECTION;
+ start = start->next;
+
+ } while ( start != end );
+
+ start->flags |= AF_FLAG_INFLECTION;
+ }
+
+ start = end;
+ end = after;
+ angle_seg = angle_out;
+ diff_in = diff_out;
+
+ } while ( !finished );
+
+ Skip:
+ ;
+ }
+ }
+
+
+
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_init( AF_GlyphHints hints,
+ FT_Memory memory )
+ {
+ FT_ZERO( hints );
+ hints->memory = memory;
+ }
+
+
+
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_done( AF_GlyphHints hints )
+ {
+ if ( hints && hints->memory )
+ {
+ FT_Memory memory = hints->memory;
+ AF_Dimension dim;
+
+ /* note that we don't need to free the segment and edge
+ * buffers, since they're really within the hints->points array
+ */
+ for ( dim = 0; dim < 2; dim++ )
+ {
+ AF_AxisHints axis = &hints->axis[ dim ];
+
+ axis->num_segments = 0;
+ axis->num_edges = 0;
+ axis->segments = NULL;
+ axis->edges = NULL;
+ }
+
+ FT_FREE( hints->contours );
+ hints->max_contours = 0;
+ hints->num_contours = 0;
+
+ FT_FREE( hints->points );
+ hints->num_points = 0;
+ hints->max_points = 0;
+
+ hints->memory = NULL;
+ }
+ }
+
+
+
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_rescale( AF_GlyphHints hints,
+ AF_ScriptMetrics metrics )
+ {
+ hints->metrics = metrics;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_glyph_hints_reload( AF_GlyphHints hints,
+ FT_Outline* outline )
+ {
+ FT_Error error = FT_Err_Ok;
+ AF_Point points;
+ FT_UInt old_max, new_max;
+ AF_Scaler scaler = &hints->metrics->scaler;
+ FT_Fixed x_scale = hints->x_scale;
+ FT_Fixed y_scale = hints->y_scale;
+ FT_Pos x_delta = hints->x_delta;
+ FT_Pos y_delta = hints->y_delta;
+ FT_Memory memory = hints->memory;
+
+ hints->scaler_flags = scaler->flags;
+ hints->num_points = 0;
+ hints->num_contours = 0;
+
+ hints->axis[0].num_segments = 0;
+ hints->axis[0].num_edges = 0;
+ hints->axis[1].num_segments = 0;
+ hints->axis[1].num_edges = 0;
+
+ /* first of all, reallocate the contours array when necessary
+ */
+ new_max = (FT_UInt) outline->n_contours;
+ old_max = hints->max_contours;
+ if ( new_max > old_max )
+ {
+ new_max = (new_max + 3) & ~3;
+
+ if ( FT_RENEW_ARRAY( hints->contours, old_max, new_max ) )
+ goto Exit;
+
+ hints->max_contours = new_max;
+ }
+
+ /* then, reallocate the points, segments & edges arrays if needed --
+ * note that we reserved two additional point positions, used to
+ * hint metrics appropriately
+ */
+ new_max = (FT_UInt)( outline->n_points + 2 );
+ old_max = hints->max_points;
+ if ( new_max > old_max )
+ {
+ FT_Byte* items;
+ FT_ULong off1, off2, off3;
+
+ /* we store in a single buffer the following arrays:
+ *
+ * - an array of N AF_PointRec items
+ * - an array of 2*N AF_SegmentRec items
+ * - an array of 2*N AF_EdgeRec items
+ *
+ */
+
+ new_max = ( new_max + 2 + 7 ) & ~7;
+
+#define OFF_PAD2(x,y) (((x)+(y)-1) & ~((y)-1))
+#define OFF_PADX(x,y) ((((x)+(y)-1)/(y))*(y))
+#define OFF_PAD(x,y) ( ((y) & ((y)-1)) ? OFF_PADX(x,y) : OFF_PAD2(x,y) )
+
+#undef OFF_INCREMENT
+#define OFF_INCREMENT( _off, _type, _count ) \
+ ( OFF_PAD( _off, sizeof(_type) ) + (_count)*sizeof(_type))
+
+ off1 = OFF_INCREMENT( 0, AF_PointRec, new_max );
+ off2 = OFF_INCREMENT( off1, AF_SegmentRec, new_max*2 );
+ off3 = OFF_INCREMENT( off2, AF_EdgeRec, new_max*2 );
+
+ FT_FREE( hints->points );
+
+ if ( FT_ALLOC( items, off3 ) )
+ {
+ hints->max_points = 0;
+ hints->axis[0].segments = NULL;
+ hints->axis[0].edges = NULL;
+ hints->axis[1].segments = NULL;
+ hints->axis[1].edges = NULL;
+ goto Exit;
+ }
+
+ /* readjust some pointers
+ */
+ hints->max_points = new_max;
+ hints->points = (AF_Point) items;
+
+ hints->axis[0].segments = (AF_Segment)( items + off1 );
+ hints->axis[1].segments = hints->axis[0].segments + new_max;
+
+ hints->axis[0].edges = (AF_Edge) ( items + off2 );
+ hints->axis[1].edges = hints->axis[0].edges + new_max;
+ }
+
+ hints->num_points = outline->n_points;
+ hints->num_contours = outline->n_contours;
+
+
+ /* We can't rely on the value of `FT_Outline.flags' to know the fill */
+ /* direction used for a glyph, given that some fonts are broken (e.g. */
+ /* the Arphic ones). We thus recompute it each time we need to. */
+ /* */
+ hints->axis[ AF_DIMENSION_HORZ ].major_dir = AF_DIR_UP;
+ hints->axis[ AF_DIMENSION_VERT ].major_dir = AF_DIR_LEFT;
+
+ if ( FT_Outline_Get_Orientation( outline ) == FT_ORIENTATION_POSTSCRIPT )
+ {
+ hints->axis[ AF_DIMENSION_HORZ ].major_dir = AF_DIR_DOWN;
+ hints->axis[ AF_DIMENSION_VERT ].major_dir = AF_DIR_RIGHT;
+ }
+
+ hints->x_scale = x_scale;
+ hints->y_scale = y_scale;
+ hints->x_delta = x_delta;
+ hints->y_delta = y_delta;
+
+ points = hints->points;
+ if ( hints->num_points == 0 )
+ goto Exit;
+
+ {
+ AF_Point point;
+ AF_Point point_limit = points + hints->num_points;
+
+
+ /* compute coordinates & bezier flags */
+ {
+ FT_Vector* vec = outline->points;
+ char* tag = outline->tags;
+
+
+ for ( point = points; point < point_limit; point++, vec++, tag++ )
+ {
+ point->fx = vec->x;
+ point->fy = vec->y;
+ point->ox = point->x = FT_MulFix( vec->x, x_scale ) + x_delta;
+ point->oy = point->y = FT_MulFix( vec->y, y_scale ) + y_delta;
+
+ switch ( FT_CURVE_TAG( *tag ) )
+ {
+ case FT_CURVE_TAG_CONIC:
+ point->flags = AF_FLAG_CONIC;
+ break;
+ case FT_CURVE_TAG_CUBIC:
+ point->flags = AF_FLAG_CUBIC;
+ break;
+ default:
+ point->flags = 0;
+ ;
+ }
+ }
+ }
+
+ /* compute `next' and `prev' */
+ {
+ FT_Int contour_index;
+ AF_Point prev;
+ AF_Point first;
+ AF_Point end;
+
+
+ contour_index = 0;
+
+ first = points;
+ end = points + outline->contours[0];
+ prev = end;
+
+ for ( point = points; point < point_limit; point++ )
+ {
+ point->prev = prev;
+ if ( point < end )
+ {
+ point->next = point + 1;
+ prev = point;
+ }
+ else
+ {
+ point->next = first;
+ contour_index++;
+ if ( point + 1 < point_limit )
+ {
+ end = points + outline->contours[contour_index];
+ first = point + 1;
+ prev = end;
+ }
+ }
+ }
+ }
+
+ /* set-up the contours array */
+ {
+ AF_Point* contour = hints->contours;
+ AF_Point* contour_limit = contour + hints->num_contours;
+ short* end = outline->contours;
+ short idx = 0;
+
+
+ for ( ; contour < contour_limit; contour++, end++ )
+ {
+ contour[0] = points + idx;
+ idx = (short)( end[0] + 1 );
+ }
+ }
+
+ /* compute directions of in & out vectors */
+ {
+ for ( point = points; point < point_limit; point++ )
+ {
+ AF_Point prev;
+ AF_Point next;
+ FT_Pos in_x, in_y, out_x, out_y;
+
+
+ prev = point->prev;
+ in_x = point->fx - prev->fx;
+ in_y = point->fy - prev->fy;
+
+ point->in_dir = af_direction_compute( in_x, in_y );
+
+ next = point->next;
+ out_x = next->fx - point->fx;
+ out_y = next->fy - point->fy;
+
+ point->out_dir = af_direction_compute( out_x, out_y );
+
+ if ( point->flags & ( AF_FLAG_CONIC | AF_FLAG_CUBIC ) )
+ {
+ Is_Weak_Point:
+ point->flags |= AF_FLAG_WEAK_INTERPOLATION;
+ }
+ else if ( point->out_dir == point->in_dir )
+ {
+ AF_Angle angle_in, angle_out, delta;
+
+
+ if ( point->out_dir != AF_DIR_NONE )
+ goto Is_Weak_Point;
+
+ angle_in = af_angle_atan( in_x, in_y );
+ angle_out = af_angle_atan( out_x, out_y );
+ delta = af_angle_diff( angle_in, angle_out );
+
+ if ( delta < 2 && delta > -2 )
+ goto Is_Weak_Point;
+ }
+ else if ( point->in_dir == -point->out_dir )
+ goto Is_Weak_Point;
+ }
+ }
+ }
+
+ /* compute inflection points
+ */
+ af_glyph_hints_compute_inflections( hints );
+
+ Exit:
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_save( AF_GlyphHints hints,
+ FT_Outline* outline )
+ {
+ AF_Point point = hints->points;
+ AF_Point limit = point + hints->num_points;
+ FT_Vector* vec = outline->points;
+ char* tag = outline->tags;
+
+ for ( ; point < limit; point++, vec++, tag++ )
+ {
+ vec->x = (FT_Pos) point->x;
+ vec->y = (FT_Pos) point->y;
+
+ if ( point->flags & AF_FLAG_CONIC )
+ tag[0] = FT_CURVE_TAG_CONIC;
+ else if ( point->flags & AF_FLAG_CUBIC )
+ tag[0] = FT_CURVE_TAG_CUBIC;
+ else
+ tag[0] = FT_CURVE_TAG_ON;
+ }
+ }
+
+
+ /*
+ *
+ * E D G E P O I N T G R I D - F I T T I N G
+ *
+ */
+
+
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_align_edge_points( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_AxisHints axis = & hints->axis[ dim ];
+ AF_Edge edges = axis->edges;
+ AF_Edge edge_limit = edges + axis->num_edges;
+ AF_Edge edge;
+
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ /* move the points of each segment */
+ /* in each edge to the edge's position */
+ AF_Segment seg = edge->first;
+
+
+ do
+ {
+ AF_Point point = seg->first;
+
+
+ for (;;)
+ {
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ point->x = edge->pos;
+ point->flags |= AF_FLAG_TOUCH_X;
+ }
+ else
+ {
+ point->y = edge->pos;
+ point->flags |= AF_FLAG_TOUCH_Y;
+ }
+
+ if ( point == seg->last )
+ break;
+
+ point = point->next;
+ }
+
+ seg = seg->edge_next;
+
+ } while ( seg != edge->first );
+ }
+ }
+
+
+ /*
+ *
+ * S T R O N G P O I N T I N T E R P O L A T I O N
+ *
+ */
+
+
+ /* hint the strong points -- this is equivalent to the TrueType `IP' */
+ /* hinting instruction */
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_align_strong_points( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_Point points = hints->points;
+ AF_Point point_limit = points + hints->num_points;
+ AF_AxisHints axis = &hints->axis[dim];
+ AF_Edge edges = axis->edges;
+ AF_Edge edge_limit = edges + axis->num_edges;
+ AF_Flags touch_flag;
+
+
+ if ( dim == AF_DIMENSION_HORZ )
+ touch_flag = AF_FLAG_TOUCH_X;
+ else
+ touch_flag = AF_FLAG_TOUCH_Y;
+
+ if ( edges < edge_limit )
+ {
+ AF_Point point;
+ AF_Edge edge;
+
+ for ( point = points; point < point_limit; point++ )
+ {
+ FT_Pos u, ou, fu; /* point position */
+ FT_Pos delta;
+
+
+ if ( point->flags & touch_flag )
+ continue;
+
+ /* if this point is candidate to weak interpolation, we will */
+ /* interpolate it after all strong points have been processed */
+ if ( ( point->flags & AF_FLAG_WEAK_INTERPOLATION ) &&
+ !( point->flags & AF_FLAG_INFLECTION ) )
+ continue;
+
+ if ( dim == AF_DIMENSION_VERT )
+ {
+ u = point->fy;
+ ou = point->oy;
+ }
+ else
+ {
+ u = point->fx;
+ ou = point->ox;
+ }
+
+ fu = u;
+
+ /* is the point before the first edge? */
+ edge = edges;
+ delta = edge->fpos - u;
+ if ( delta >= 0 )
+ {
+ u = edge->pos - ( edge->opos - ou );
+ goto Store_Point;
+ }
+
+ /* is the point after the last edge? */
+ edge = edge_limit - 1;
+ delta = u - edge->fpos;
+ if ( delta >= 0 )
+ {
+ u = edge->pos + ( ou - edge->opos );
+ goto Store_Point;
+ }
+
+ {
+ FT_UInt min, max, mid;
+ FT_Pos fpos;
+
+
+ /* find enclosing edges */
+ min = 0;
+ max = edge_limit - edges;
+
+ while ( min < max )
+ {
+ mid = ( max + min ) >> 1;
+ edge = edges + mid;
+ fpos = edge->fpos;
+
+ if ( u < fpos )
+ max = mid;
+ else if ( u > fpos )
+ min = mid + 1;
+ else
+ {
+ /* we are on the edge */
+ u = edge->pos;
+ goto Store_Point;
+ }
+ }
+
+ {
+ AF_Edge before = edges + min - 1;
+ AF_Edge after = edges + min + 0;
+
+
+ /* assert( before && after && before != after ) */
+ if ( before->scale == 0 )
+ before->scale = FT_DivFix( after->pos - before->pos,
+ after->fpos - before->fpos );
+
+ u = before->pos + FT_MulFix( fu - before->fpos,
+ before->scale );
+ }
+ }
+
+
+ Store_Point:
+
+ /* save the point position */
+ if ( dim == AF_DIMENSION_HORZ )
+ point->x = u;
+ else
+ point->y = u;
+
+ point->flags |= touch_flag;
+ }
+ }
+ }
+
+
+ /*
+ *
+ * W E A K P O I N T I N T E R P O L A T I O N
+ *
+ */
+
+ static void
+ af_iup_shift( AF_Point p1,
+ AF_Point p2,
+ AF_Point ref )
+ {
+ AF_Point p;
+ FT_Pos delta = ref->u - ref->v;
+
+
+ for ( p = p1; p < ref; p++ )
+ p->u = p->v + delta;
+
+ for ( p = ref + 1; p <= p2; p++ )
+ p->u = p->v + delta;
+ }
+
+
+ static void
+ af_iup_interp( AF_Point p1,
+ AF_Point p2,
+ AF_Point ref1,
+ AF_Point ref2 )
+ {
+ AF_Point p;
+ FT_Pos u;
+ FT_Pos v1 = ref1->v;
+ FT_Pos v2 = ref2->v;
+ FT_Pos d1 = ref1->u - v1;
+ FT_Pos d2 = ref2->u - v2;
+
+
+ if ( p1 > p2 )
+ return;
+
+ if ( v1 == v2 )
+ {
+ for ( p = p1; p <= p2; p++ )
+ {
+ u = p->v;
+
+ if ( u <= v1 )
+ u += d1;
+ else
+ u += d2;
+
+ p->u = u;
+ }
+ return;
+ }
+
+ if ( v1 < v2 )
+ {
+ for ( p = p1; p <= p2; p++ )
+ {
+ u = p->v;
+
+ if ( u <= v1 )
+ u += d1;
+ else if ( u >= v2 )
+ u += d2;
+ else
+ u = ref1->u + FT_MulDiv( u - v1, ref2->u - ref1->u, v2 - v1 );
+
+ p->u = u;
+ }
+ }
+ else
+ {
+ for ( p = p1; p <= p2; p++ )
+ {
+ u = p->v;
+
+ if ( u <= v2 )
+ u += d2;
+ else if ( u >= v1 )
+ u += d1;
+ else
+ u = ref1->u + FT_MulDiv( u - v1, ref2->u - ref1->u, v2 - v1 );
+
+ p->u = u;
+ }
+ }
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_glyph_hints_align_weak_points( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_Point points = hints->points;
+ AF_Point point_limit = points + hints->num_points;
+ AF_Point* contour = hints->contours;
+ AF_Point* contour_limit = contour + hints->num_contours;
+ AF_Flags touch_flag;
+ AF_Point point;
+ AF_Point end_point;
+ AF_Point first_point;
+
+
+ /* PASS 1: Move segment points to edge positions */
+
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ touch_flag = AF_FLAG_TOUCH_X;
+
+ for ( point = points; point < point_limit; point++ )
+ {
+ point->u = point->x;
+ point->v = point->ox;
+ }
+ }
+ else
+ {
+ touch_flag = AF_FLAG_TOUCH_Y;
+
+ for ( point = points; point < point_limit; point++ )
+ {
+ point->u = point->y;
+ point->v = point->oy;
+ }
+ }
+
+ point = points;
+
+ for ( ; contour < contour_limit; contour++ )
+ {
+ point = *contour;
+ end_point = point->prev;
+ first_point = point;
+
+ while ( point <= end_point && !( point->flags & touch_flag ) )
+ point++;
+
+ if ( point <= end_point )
+ {
+ AF_Point first_touched = point;
+ AF_Point cur_touched = point;
+
+
+ point++;
+ while ( point <= end_point )
+ {
+ if ( point->flags & touch_flag )
+ {
+ /* we found two successive touched points; we interpolate */
+ /* all contour points between them */
+ af_iup_interp( cur_touched + 1, point - 1,
+ cur_touched, point );
+ cur_touched = point;
+ }
+ point++;
+ }
+
+ if ( cur_touched == first_touched )
+ {
+ /* this is a special case: only one point was touched in the */
+ /* contour; we thus simply shift the whole contour */
+ af_iup_shift( first_point, end_point, cur_touched );
+ }
+ else
+ {
+ /* now interpolate after the last touched point to the end */
+ /* of the contour */
+ af_iup_interp( cur_touched + 1, end_point,
+ cur_touched, first_touched );
+
+ /* if the first contour point isn't touched, interpolate */
+ /* from the contour start to the first touched point */
+ if ( first_touched > points )
+ af_iup_interp( first_point, first_touched - 1,
+ cur_touched, first_touched );
+ }
+ }
+ }
+
+ /* now save the interpolated values back to x/y */
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ for ( point = points; point < point_limit; point++ )
+ point->x = point->u;
+ }
+ else
+ {
+ for ( point = points; point < point_limit; point++ )
+ point->y = point->u;
+ }
+ }
diff --git a/nx-X11/extras/freetype2/src/autofit/afhints.h b/nx-X11/extras/freetype2/src/autofit/afhints.h
new file mode 100644
index 000000000..40fd613a4
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afhints.h
@@ -0,0 +1,248 @@
+#ifndef __AFHINTS_H__
+#define __AFHINTS_H__
+
+#include "aftypes.h"
+
+FT_BEGIN_HEADER
+
+ /*
+ * The definition of outline glyph hints. These are shared by all
+ * script analysis routines (until now)
+ *
+ */
+
+ typedef enum
+ {
+ AF_DIMENSION_HORZ = 0, /* x coordinates, i.e. vertical segments & edges */
+ AF_DIMENSION_VERT = 1, /* y coordinates, i.e. horizontal segments & edges */
+
+ AF_DIMENSION_MAX /* do not remove */
+
+ } AF_Dimension;
+
+
+ /* hint directions -- the values are computed so that two vectors are */
+ /* in opposite directions iff `dir1+dir2 == 0' */
+ typedef enum
+ {
+ AF_DIR_NONE = 4,
+ AF_DIR_RIGHT = 1,
+ AF_DIR_LEFT = -1,
+ AF_DIR_UP = 2,
+ AF_DIR_DOWN = -2
+
+ } AF_Direction;
+
+
+ /* point hint flags */
+ typedef enum
+ {
+ AF_FLAG_NONE = 0,
+
+ /* point type flags */
+ AF_FLAG_CONIC = (1 << 0),
+ AF_FLAG_CUBIC = (1 << 1),
+ AF_FLAG_CONTROL = AF_FLAG_CONIC | AF_FLAG_CUBIC,
+
+ /* point extremum flags */
+ AF_FLAG_EXTREMA_X = (1 << 2),
+ AF_FLAG_EXTREMA_Y = (1 << 3),
+
+ /* point roundness flags */
+ AF_FLAG_ROUND_X = (1 << 4),
+ AF_FLAG_ROUND_Y = (1 << 5),
+
+ /* point touch flags */
+ AF_FLAG_TOUCH_X = (1 << 6),
+ AF_FLAG_TOUCH_Y = (1 << 7),
+
+ /* candidates for weak interpolation have this flag set */
+ AF_FLAG_WEAK_INTERPOLATION = (1 << 8),
+
+ /* all inflection points in the outline have this flag set */
+ AF_FLAG_INFLECTION = (1 << 9)
+
+ } AF_Flags;
+
+
+ /* edge hint flags */
+ typedef enum
+ {
+ AF_EDGE_NORMAL = 0,
+ AF_EDGE_ROUND = (1 << 0),
+ AF_EDGE_SERIF = (1 << 1),
+ AF_EDGE_DONE = (1 << 2)
+
+ } AF_Edge_Flags;
+
+
+
+ typedef struct AF_PointRec_* AF_Point;
+ typedef struct AF_SegmentRec_* AF_Segment;
+ typedef struct AF_EdgeRec_* AF_Edge;
+
+
+ typedef struct AF_PointRec_
+ {
+ AF_Flags flags; /* point flags used by hinter */
+ FT_Pos ox, oy; /* original, scaled position */
+ FT_Pos fx, fy; /* original, unscaled position (font units) */
+ FT_Pos x, y; /* current position */
+ FT_Pos u, v; /* current (x,y) or (y,x) depending on context */
+
+ AF_Direction in_dir; /* direction of inwards vector */
+ AF_Direction out_dir; /* direction of outwards vector */
+
+ AF_Point next; /* next point in contour */
+ AF_Point prev; /* previous point in contour */
+
+ } AF_PointRec;
+
+
+ typedef struct AF_SegmentRec_
+ {
+ AF_Edge_Flags flags; /* edge/segment flags for this segment */
+ AF_Direction dir; /* segment direction */
+ FT_Pos pos; /* position of segment */
+ FT_Pos min_coord; /* minimum coordinate of segment */
+ FT_Pos max_coord; /* maximum coordinate of segment */
+
+ AF_Edge edge; /* the segment's parent edge */
+ AF_Segment edge_next; /* link to next segment in parent edge */
+
+ AF_Segment link; /* (stem) link segment */
+ AF_Segment serif; /* primary segment for serifs */
+ FT_Pos num_linked; /* number of linked segments */
+ FT_Pos score; /* used during stem matching */
+
+ AF_Point first; /* first point in edge segment */
+ AF_Point last; /* last point in edge segment */
+ AF_Point* contour; /* ptr to first point of segment's contour */
+
+ } AF_SegmentRec;
+
+
+ typedef struct AF_EdgeRec_
+ {
+ FT_Pos fpos; /* original, unscaled position (font units) */
+ FT_Pos opos; /* original, scaled position */
+ FT_Pos pos; /* current position */
+
+ AF_Edge_Flags flags; /* edge flags */
+ AF_Direction dir; /* edge direction */
+ FT_Fixed scale; /* used to speed up interpolation between edges */
+ AF_Width blue_edge; /* non-NULL if this is a blue edge */
+
+ AF_Edge link;
+ AF_Edge serif;
+ FT_Int num_linked;
+
+ FT_Int score;
+
+ AF_Segment first;
+ AF_Segment last;
+
+ } AF_EdgeRec;
+
+
+ typedef struct AF_AxisHintsRec_
+ {
+ FT_Int num_segments;
+ AF_Segment segments;
+
+ FT_Int num_edges;
+ AF_Edge edges;
+
+ AF_Direction major_dir;
+
+ } AF_AxisHintsRec, *AF_AxisHints;
+
+
+ typedef struct AF_GlyphHintsRec_
+ {
+ FT_Memory memory;
+
+ FT_Fixed x_scale;
+ FT_Pos x_delta;
+
+ FT_Fixed y_scale;
+ FT_Pos y_delta;
+
+ FT_Pos edge_distance_threshold;
+
+ FT_Int max_points;
+ FT_Int num_points;
+ AF_Point points;
+
+ FT_Int max_contours;
+ FT_Int num_contours;
+ AF_Point* contours;
+
+ AF_AxisHintsRec axis[ AF_DIMENSION_MAX ];
+
+ FT_UInt32 scaler_flags; /* copy of scaler flags */
+ FT_UInt32 other_flags; /* free for script-specific implementations */
+ AF_ScriptMetrics metrics;
+
+ } AF_GlyphHintsRec;
+
+
+#define AF_HINTS_TEST_SCALER(h,f) ( (h)->scaler_flags & (f) )
+#define AF_HINTS_TEST_OTHER(h,f) ( (h)->other_flags & (f) )
+
+#define AF_HINTS_DO_HORIZONTAL(h) \
+ !AF_HINTS_TEST_SCALER(h,AF_SCALER_FLAG_NO_HORIZONTAL)
+
+#define AF_HINTS_DO_VERTICAL(h) \
+ !AF_HINTS_TEST_SCALER(h,AF_SCALER_FLAG_NO_VERTICAL)
+
+#define AF_HINTS_DO_ADVANCE(h) \
+ !AF_HINTS_TEST_SCALER(h,AF_SCALER_FLAG_NO_ADVANCE)
+
+
+ FT_LOCAL( AF_Direction )
+ af_direction_compute( FT_Pos dx,
+ FT_Pos dy );
+
+
+ FT_LOCAL( void )
+ af_glyph_hints_init( AF_GlyphHints hints,
+ FT_Memory memory );
+
+
+
+ /* recomputes all AF_Point in a AF_GlyphHints from the definitions
+ * in a source outline
+ */
+ FT_LOCAL( void )
+ af_glyph_hints_rescale( AF_GlyphHints hints,
+ AF_ScriptMetrics metrics );
+
+ FT_LOCAL( FT_Error )
+ af_glyph_hints_reload( AF_GlyphHints hints,
+ FT_Outline* outline );
+
+ FT_LOCAL( void )
+ af_glyph_hints_save( AF_GlyphHints hints,
+ FT_Outline* outline );
+
+ FT_LOCAL( void )
+ af_glyph_hints_align_edge_points( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ FT_LOCAL( void )
+ af_glyph_hints_align_strong_points( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ FT_LOCAL( void )
+ af_glyph_hints_align_weak_points( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ FT_LOCAL( void )
+ af_glyph_hints_done( AF_GlyphHints hints );
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFHINTS_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/aflatin.c b/nx-X11/extras/freetype2/src/autofit/aflatin.c
new file mode 100644
index 000000000..ce0f8c961
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/aflatin.c
@@ -0,0 +1,1871 @@
+#include "aflatin.h"
+
+ /***************************************************************************/
+ /***************************************************************************/
+ /***** *****/
+ /***** L A T I N G L O B A L M E T R I C S *****/
+ /***** *****/
+ /***************************************************************************/
+ /***************************************************************************/
+
+ static void
+ af_latin_metrics_init_widths( AF_LatinMetrics metrics,
+ FT_Face face )
+ {
+ /* scan the array of segments in each direction */
+ AF_GlyphHintsRec hints[1];
+
+ af_glyph_hints_init( hints, face->memory );
+
+ metrics->axis[ AF_DIMENSION_HORZ ].width_count = 0;
+ metrics->axis[ AF_DIMENSION_VERT ].width_count = 0;
+
+ /* For now, compute the standard width and height from the `o' */
+ {
+ FT_Error error;
+ FT_UInt glyph_index;
+ AF_Dimension dim;
+ AF_ScriptMetricsRec dummy[1];
+ AF_Scaler scaler = &dummy->scaler;
+
+ glyph_index = FT_Get_Char_Index( face, 'o' );
+ if ( glyph_index == 0 )
+ goto Exit;
+
+ error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE );
+ if ( error || face->glyph->outline.n_points <= 0 )
+ goto Exit;
+
+ FT_ZERO( dummy );
+
+ scaler->x_scale = scaler->y_scale = 0x10000L;
+ scaler->x_delta = scaler->y_delta = 0;
+ scaler->face = face;
+ scaler->render_mode = 0;
+ scaler->flags = 0;
+
+ af_glyph_hints_rescale( hints, dummy );
+
+ error = af_glyph_hints_reload( hints, &face->glyph->outline );
+ if ( error )
+ goto Exit;
+
+ for ( dim = 0; dim < AF_DIMENSION_MAX; dim++ )
+ {
+ AF_LatinAxis axis = & metrics->axis[ dim ];
+ AF_AxisHints axhints = & hints->axis[ dim ];
+ AF_Segment seg, limit, link;
+ FT_UInt num_widths = 0;
+ FT_Pos edge_distance_threshold = 32000;
+
+ af_latin_hints_compute_segments( hints, dim );
+ af_latin_hints_link_segments ( hints, dim );
+
+ seg = axhints->segments;
+ limit = seg + axhints->num_segments;
+
+ for ( ; seg < limit; seg++ )
+ {
+ link = seg->link;
+ /* we only consider stem segments there! */
+ if ( link && link->link == seg && link > seg )
+ {
+ FT_Pos dist;
+
+
+ dist = seg->pos - link->pos;
+ if ( dist < 0 )
+ dist = -dist;
+
+ if ( num_widths < AF_LATIN_MAX_WIDTHS )
+ axis->widths[ num_widths++ ].org = dist;
+ }
+ }
+
+ af_sort_widths( num_widths, axis->widths );
+ axis->width_count = num_widths;
+
+ /* we will now try to find the smallest width */
+ if ( num_widths > 0 && axis->widths[0].org < edge_distance_threshold )
+ edge_distance_threshold = axis->widths[0].org;
+
+ /* Now, compute the edge distance threshold as a fraction of the */
+ /* smallest width in the font. Set it in `hinter->glyph' too! */
+ if ( edge_distance_threshold == 32000 )
+ edge_distance_threshold = 50;
+
+ /* let's try 20% */
+ axis->edge_distance_threshold = edge_distance_threshold / 5;
+ }
+ }
+
+ Exit:
+ af_glyph_hints_done( hints );
+ }
+
+
+
+#define AF_LATIN_MAX_TEST_CHARACTERS 12
+
+
+ static const char* const af_latin_blue_chars[ AF_LATIN_MAX_BLUES ] =
+ {
+ "THEZOCQS",
+ "HEZLOCUS",
+ "fijkdbh",
+ "xzroesc",
+ "xzroesc",
+ "pqgjy"
+ };
+
+
+ static void
+ af_latin_metrics_init_blues( AF_LatinMetrics metrics,
+ FT_Face face )
+ {
+ FT_Pos flats [ AF_LATIN_MAX_TEST_CHARACTERS ];
+ FT_Pos rounds[ AF_LATIN_MAX_TEST_CHARACTERS ];
+ FT_Int num_flats;
+ FT_Int num_rounds;
+ FT_Int bb;
+ AF_LatinBlue blue;
+ FT_Error error;
+ AF_LatinAxis axis = &metrics->axis[ AF_DIMENSION_VERT ];
+ FT_GlyphSlot glyph = face->glyph;
+
+ /* we compute the blues simply by loading each character from the */
+ /* 'af_latin_blue_chars[blues]' string, then compute its top-most or */
+ /* bottom-most points (depending on `AF_IS_TOP_BLUE') */
+
+ AF_LOG(( "blue zones computation\n" ));
+ AF_LOG(( "------------------------------------------------\n" ));
+
+ for ( bb = 0; bb < AF_LATIN_BLUE_MAX; bb++ )
+ {
+ const char* p = af_latin_blue_chars[bb];
+ const char* limit = p + AF_LATIN_MAX_TEST_CHARACTERS;
+ FT_Pos* blue_ref;
+ FT_Pos* blue_shoot;
+
+ AF_LOG(( "blue %3d: ", bb ));
+
+ num_flats = 0;
+ num_rounds = 0;
+
+ for ( ; p < limit && *p; p++ )
+ {
+ FT_UInt glyph_index;
+ FT_Vector* extremum;
+ FT_Vector* points;
+ FT_Vector* point_limit;
+ FT_Vector* point;
+ FT_Bool round;
+
+
+ AF_LOG(( "'%c'", *p ));
+
+ /* load the character in the face -- skip unknown or empty ones */
+ glyph_index = FT_Get_Char_Index( face, (FT_UInt)*p );
+ if ( glyph_index == 0 )
+ continue;
+
+ error = FT_Load_Glyph( face, glyph_index, FT_LOAD_NO_SCALE );
+ if ( error || glyph->outline.n_points <= 0 )
+ continue;
+
+ /* now compute min or max point indices and coordinates */
+ points = glyph->outline.points;
+ point_limit = points + glyph->outline.n_points;
+ point = points;
+ extremum = point;
+ point++;
+
+ if ( AF_LATIN_IS_TOP_BLUE( bb ) )
+ {
+ for ( ; point < point_limit; point++ )
+ if ( point->y > extremum->y )
+ extremum = point;
+ }
+ else
+ {
+ for ( ; point < point_limit; point++ )
+ if ( point->y < extremum->y )
+ extremum = point;
+ }
+
+ AF_LOG(( "%5d", (int)extremum->y ));
+
+ /* now, check whether the point belongs to a straight or round */
+ /* segment; we first need to find in which contour the extremum */
+ /* lies, then see its previous and next points */
+ {
+ FT_Int idx = (FT_Int)( extremum - points );
+ FT_Int n;
+ FT_Int first, last, prev, next, end;
+ FT_Pos dist;
+
+
+ last = -1;
+ first = 0;
+
+ for ( n = 0; n < glyph->outline.n_contours; n++ )
+ {
+ end = glyph->outline.contours[n];
+ if ( end >= idx )
+ {
+ last = end;
+ break;
+ }
+ first = end + 1;
+ }
+
+ /* XXX: should never happen! */
+ if ( last < 0 )
+ continue;
+
+ /* now look for the previous and next points that are not on the */
+ /* same Y coordinate. Threshold the `closeness'... */
+
+ prev = idx;
+ next = prev;
+
+ do
+ {
+ if ( prev > first )
+ prev--;
+ else
+ prev = last;
+
+ dist = points[prev].y - extremum->y;
+ if ( dist < -5 || dist > 5 )
+ break;
+
+ } while ( prev != idx );
+
+ do
+ {
+ if ( next < last )
+ next++;
+ else
+ next = first;
+
+ dist = points[next].y - extremum->y;
+ if ( dist < -5 || dist > 5 )
+ break;
+
+ } while ( next != idx );
+
+ /* now, set the `round' flag depending on the segment's kind */
+ round = FT_BOOL(
+ FT_CURVE_TAG( glyph->outline.tags[prev] ) != FT_CURVE_TAG_ON ||
+ FT_CURVE_TAG( glyph->outline.tags[next] ) != FT_CURVE_TAG_ON );
+
+ AF_LOG(( "%c ", round ? 'r' : 'f' ));
+ }
+
+ if ( round )
+ rounds[num_rounds++] = extremum->y;
+ else
+ flats[num_flats++] = extremum->y;
+ }
+
+ AF_LOG(( "\n" ));
+
+ if ( num_flats == 0 && num_rounds == 0 )
+ {
+ /* we couldn't find a single glyph to compute this blue zone,
+ * we will simply ignore it then
+ */
+ AF_LOG(( "empty !!\n" ));
+ continue;
+ }
+
+ /* we have computed the contents of the `rounds' and `flats' tables, */
+ /* now determine the reference and overshoot position of the blue -- */
+ /* we simply take the median value after a simple sort */
+ af_sort_pos( num_rounds, rounds );
+ af_sort_pos( num_flats, flats );
+
+ blue = & axis->blues[ axis->blue_count ];
+ blue_ref = & blue->ref.org;
+ blue_shoot = & blue->shoot.org;
+
+ axis->blue_count ++;
+
+ if ( num_flats == 0 )
+ {
+ *blue_ref =
+ *blue_shoot = rounds[num_rounds / 2];
+ }
+ else if ( num_rounds == 0 )
+ {
+ *blue_ref =
+ *blue_shoot = flats[num_flats / 2];
+ }
+ else
+ {
+ *blue_ref = flats[num_flats / 2];
+ *blue_shoot = rounds[num_rounds / 2];
+ }
+
+ /* there are sometimes problems: if the overshoot position of top */
+ /* zones is under its reference position, or the opposite for bottom */
+ /* zones. We must thus check everything there and correct the errors */
+ if ( *blue_shoot != *blue_ref )
+ {
+ FT_Pos ref = *blue_ref;
+ FT_Pos shoot = *blue_shoot;
+ FT_Bool over_ref = FT_BOOL( shoot > ref );
+
+
+ if ( AF_LATIN_IS_TOP_BLUE( bb ) ^ over_ref )
+ *blue_shoot = *blue_ref = ( shoot + ref ) / 2;
+ }
+
+ blue->flags = 0;
+ if ( AF_LATIN_IS_TOP_BLUE(bb) )
+ blue->flags |= AF_LATIN_BLUE_TOP;
+
+ /* the following flags is used later to adjust the y and x scales
+ * in order to optimize the pixel grid alignment of the top of small
+ * letters.
+ */
+ if ( bb == AF_LATIN_BLUE_SMALL_TOP )
+ blue->flags |= AF_LATIN_BLUE_ADJUSTMENT;
+
+ AF_LOG(( "-- ref = %ld, shoot = %ld\n", *blue_ref, *blue_shoot ));
+ }
+
+ return;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_latin_metrics_init( AF_LatinMetrics metrics,
+ FT_Face face )
+ {
+ FT_Error error;
+ FT_CharMap oldmap = face->charmap;
+
+ /* do we have a Unicode charmap in there? */
+ error = FT_Select_Charmap( face, FT_ENCODING_UNICODE );
+ if ( error ) goto Exit;
+
+ metrics->units_per_em = face->units_per_EM;
+
+ af_latin_metrics_init_widths( metrics, face );
+ af_latin_metrics_init_blues( metrics, face );
+
+ Exit:
+ FT_Set_Charmap( face, oldmap );
+ return error;
+ }
+
+
+ static void
+ af_latin_metrics_scale_dim( AF_LatinMetrics metrics,
+ AF_Scaler scaler,
+ AF_Dimension dim )
+ {
+ FT_Fixed scale;
+ FT_Pos delta;
+ AF_LatinAxis axis;
+ FT_UInt nn;
+
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ scale = scaler->x_scale;
+ delta = scaler->x_delta;
+ }
+ else
+ {
+ scale = scaler->y_scale;
+ delta = scaler->y_delta;
+ }
+
+ axis = & metrics->axis[ dim ];
+
+ if ( axis->org_scale == scale && axis->org_delta == delta )
+ return;
+
+ axis->org_scale = scale;
+ axis->org_delta = delta;
+
+ /* correct X and Y scale to optimize the alignment of the top of small
+ * letters to the pixel grid
+ */
+ {
+ AF_LatinAxis axis = &metrics->axis[ AF_DIMENSION_VERT ];
+ AF_LatinBlue blue = NULL;
+ FT_UInt nn;
+
+ for ( nn = 0; nn < axis->blue_count; nn++ )
+ {
+ if ( axis->blues[nn].flags & AF_LATIN_BLUE_ADJUSTMENT )
+ {
+ blue = &axis->blues[nn];
+ break;
+ }
+ }
+
+ if ( blue )
+ {
+ FT_Pos scaled = FT_MulFix( blue->shoot.org, scaler->y_scale );
+ FT_Pos fitted = FT_PIX_ROUND( scaled );
+
+
+ if ( scaled != fitted )
+ {
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ if ( fitted < scaled )
+ scale -= scale/50; /* x_scale = x_scale*0.98 */
+ }
+ else
+ {
+ scale = FT_MulDiv( scale, fitted, scaled );
+ }
+ }
+ }
+ }
+
+ axis->scale = scale;
+ axis->delta = delta;
+
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ metrics->root.scaler.x_scale = scale;
+ metrics->root.scaler.x_delta = delta;
+ }
+ else
+ {
+ metrics->root.scaler.y_scale = scale;
+ metrics->root.scaler.y_delta = delta;
+ }
+
+ /* scale the standard widths
+ */
+ for ( nn = 0; nn < axis->width_count; nn++ )
+ {
+ AF_Width width = axis->widths + nn;
+
+ width->cur = FT_MulFix( width->org, scale );
+ width->fit = width->cur;
+ }
+
+ if ( dim == AF_DIMENSION_VERT )
+ {
+ /* scale the blue zones
+ */
+ for ( nn = 0; nn < axis->blue_count; nn++ )
+ {
+ AF_LatinBlue blue = & axis->blues[nn];
+ FT_Pos dist;
+
+ blue->ref.cur = FT_MulFix( blue->ref.org, scale ) + delta;
+ blue->ref.fit = blue->ref.cur;
+ blue->shoot.cur = FT_MulFix( blue->shoot.org, scale ) + delta;
+ blue->shoot.fit = blue->shoot.cur;
+ blue->flags &= ~AF_LATIN_BLUE_ACTIVE;
+
+ /* a blue zone is only active when it is less than 3/4 pixels tall
+ */
+ dist = FT_MulFix( blue->ref.org - blue->shoot.org, scale );
+ if ( dist <= 48 && dist >= -48 )
+ {
+ FT_Pos delta, delta2;
+
+ delta = blue->shoot.org - blue->ref.org;
+ delta2 = delta;
+ if ( delta < 0 )
+ delta2 = -delta2;
+
+ delta2 = FT_MulFix( delta2, scale );
+
+ if ( delta2 < 32 )
+ delta2 = 0;
+ else if ( delta2 < 64 )
+ delta2 = 32 + ( ( ( delta2 - 32 ) + 16 ) & ~31 );
+ else
+ delta2 = FT_PIX_ROUND( delta2 );
+
+ if ( delta < 0 )
+ delta2 = -delta2;
+
+ blue->ref.fit = FT_PIX_ROUND( blue->ref.cur );
+ blue->shoot.fit = blue->ref.fit + delta2;
+
+ blue->flags |= AF_LATIN_BLUE_ACTIVE;
+ }
+ }
+ }
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_latin_metrics_scale( AF_LatinMetrics metrics,
+ AF_Scaler scaler )
+ {
+ if ( AF_SCALER_EQUAL_SCALES( scaler, &metrics->root.scaler ) )
+ return;
+
+ af_latin_metrics_scale_dim( metrics, scaler, AF_DIMENSION_HORZ );
+ af_latin_metrics_scale_dim( metrics, scaler, AF_DIMENSION_VERT );
+ }
+
+
+ /***************************************************************************/
+ /***************************************************************************/
+ /***** *****/
+ /***** L A T I N G L Y P H A N A L Y S I S *****/
+ /***** *****/
+ /***************************************************************************/
+ /***************************************************************************/
+
+ FT_LOCAL_DEF( void )
+ af_latin_hints_compute_segments( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_AxisHints axis = &hints->axis[dim];
+ AF_Segment segments = axis->segments;
+ AF_Segment segment = segments;
+ FT_Int num_segments = 0;
+ AF_Point* contour = hints->contours;
+ AF_Point* contour_limit = contour + hints->num_contours;
+ AF_Direction major_dir, segment_dir;
+
+#ifdef AF_HINT_METRICS
+ AF_Point min_point = 0;
+ AF_Point max_point = 0;
+ FT_Pos min_coord = 32000;
+ FT_Pos max_coord = -32000;
+#endif
+
+ major_dir = FT_ABS( axis->major_dir );
+ segment_dir = major_dir;
+
+ /* set up (u,v) in each point */
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ AF_Point point = hints->points;
+ AF_Point limit = point + hints->num_points;
+
+ for ( ; point < limit; point++ )
+ {
+ point->u = point->fx;
+ point->v = point->fy;
+ }
+ }
+ else
+ {
+ AF_Point point = hints->points;
+ AF_Point limit = point + hints->num_points;
+
+ for ( ; point < limit; point++ )
+ {
+ point->u = point->fy;
+ point->v = point->fx;
+ }
+ }
+
+
+ /* do each contour separately */
+ for ( ; contour < contour_limit; contour++ )
+ {
+ AF_Point point = contour[0];
+ AF_Point last = point->prev;
+ int on_edge = 0;
+ FT_Pos min_pos = 32000; /* minimum segment pos != min_coord */
+ FT_Pos max_pos = -32000; /* maximum segment pos != max_coord */
+ FT_Bool passed;
+
+
+#ifdef AF_HINT_METRICS
+ if ( point->u < min_coord )
+ {
+ min_coord = point->u;
+ min_point = point;
+ }
+ if ( point->u > max_coord )
+ {
+ max_coord = point->u;
+ max_point = point;
+ }
+#endif
+
+ if ( point == last ) /* skip singletons -- just in case */
+ continue;
+
+ if ( FT_ABS( last->out_dir ) == major_dir &&
+ FT_ABS( point->out_dir ) == major_dir )
+ {
+ /* we are already on an edge, try to locate its start */
+ last = point;
+
+ for (;;)
+ {
+ point = point->prev;
+ if ( FT_ABS( point->out_dir ) != major_dir )
+ {
+ point = point->next;
+ break;
+ }
+ if ( point == last )
+ break;
+ }
+ }
+
+ last = point;
+ passed = 0;
+
+ for (;;)
+ {
+ FT_Pos u, v;
+
+
+ if ( on_edge )
+ {
+ u = point->u;
+ if ( u < min_pos )
+ min_pos = u;
+ if ( u > max_pos )
+ max_pos = u;
+
+ if ( point->out_dir != segment_dir || point == last )
+ {
+ /* we are just leaving an edge; record a new segment! */
+ segment->last = point;
+ segment->pos = ( min_pos + max_pos ) >> 1;
+
+ /* a segment is round if either its first or last point */
+ /* is a control point */
+ if ( ( segment->first->flags | point->flags ) &
+ AF_FLAG_CONTROL )
+ segment->flags |= AF_EDGE_ROUND;
+
+ /* compute segment size */
+ min_pos = max_pos = point->v;
+
+ v = segment->first->v;
+ if ( v < min_pos )
+ min_pos = v;
+ if ( v > max_pos )
+ max_pos = v;
+
+ segment->min_coord = min_pos;
+ segment->max_coord = max_pos;
+
+ on_edge = 0;
+ num_segments++;
+ segment++;
+ /* fallthrough */
+ }
+ }
+
+ /* now exit if we are at the start/end point */
+ if ( point == last )
+ {
+ if ( passed )
+ break;
+ passed = 1;
+ }
+
+ if ( !on_edge && FT_ABS( point->out_dir ) == major_dir )
+ {
+ /* this is the start of a new segment! */
+ segment_dir = point->out_dir;
+
+ /* clear all segment fields */
+ FT_ZERO( segment );
+
+ segment->dir = segment_dir;
+ segment->flags = AF_EDGE_NORMAL;
+ min_pos = max_pos = point->u;
+ segment->first = point;
+ segment->last = point;
+ segment->contour = contour;
+ segment->score = 32000;
+ segment->link = NULL;
+ on_edge = 1;
+
+#ifdef AF_HINT_METRICS
+ if ( point == max_point )
+ max_point = 0;
+
+ if ( point == min_point )
+ min_point = 0;
+#endif
+ }
+
+ point = point->next;
+ }
+
+ } /* contours */
+
+#ifdef AF_HINT_METRICS
+ /* we need to ensure that there are edges on the left-most and */
+ /* right-most points of the glyph in order to hint the metrics; */
+ /* we do this by inserting fake segments when needed */
+ if ( dim == AF_DIMENSION_HORZ )
+ {
+ AF_Point point = hints->points;
+ AF_Point point_limit = point + hints->num_points;
+
+ FT_Pos min_pos = 32000;
+ FT_Pos max_pos = -32000;
+
+
+ min_point = 0;
+ max_point = 0;
+
+ /* compute minimum and maximum points */
+ for ( ; point < point_limit; point++ )
+ {
+ FT_Pos x = point->fx;
+
+
+ if ( x < min_pos )
+ {
+ min_pos = x;
+ min_point = point;
+ }
+ if ( x > max_pos )
+ {
+ max_pos = x;
+ max_point = point;
+ }
+ }
+
+ /* insert minimum segment */
+ if ( min_point )
+ {
+ /* clear all segment fields */
+ FT_ZERO( segment );
+
+ segment->dir = segment_dir;
+ segment->flags = AF_EDGE_NORMAL;
+ segment->first = min_point;
+ segment->last = min_point;
+ segment->pos = min_pos;
+ segment->score = 32000;
+ segment->link = NULL;
+
+ num_segments++;
+ segment++;
+ }
+
+ /* insert maximum segment */
+ if ( max_point )
+ {
+ /* clear all segment fields */
+ FT_ZERO( segment );
+
+ segment->dir = segment_dir;
+ segment->flags = AF_EDGE_NORMAL;
+ segment->first = max_point;
+ segment->last = max_point;
+ segment->pos = max_pos;
+ segment->score = 32000;
+ segment->link = NULL;
+
+ num_segments++;
+ segment++;
+ }
+ }
+#endif /* AF_HINT_METRICS */
+
+ axis->num_segments = num_segments;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_latin_hints_link_segments( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_AxisHints axis = &hints->axis[dim];
+ AF_Segment segments = axis->segments;
+ AF_Segment segment_limit = segments + axis->num_segments;
+ AF_Direction major_dir = axis->major_dir;
+ AF_Segment seg1, seg2;
+
+ /* 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->first == seg1->last || seg1->dir != major_dir )
+ continue;
+
+ for ( seg2 = segments; seg2 < segment_limit; seg2++ )
+ if ( seg2 != seg1 && seg1->dir + seg2->dir == 0 )
+ {
+ FT_Pos pos1 = seg1->pos;
+ FT_Pos pos2 = seg2->pos;
+ FT_Pos dist = pos2 - pos1;
+
+
+ if ( dist < 0 )
+ continue;
+
+ {
+ FT_Pos min = seg1->min_coord;
+ FT_Pos max = seg1->max_coord;
+ FT_Pos len, score;
+
+
+ if ( min < seg2->min_coord )
+ min = seg2->min_coord;
+
+ if ( max > seg2->max_coord )
+ max = seg2->max_coord;
+
+ len = max - min;
+ if ( len >= 8 )
+ {
+ score = dist + 3000 / len;
+
+ if ( score < seg1->score )
+ {
+ seg1->score = score;
+ seg1->link = seg2;
+ }
+
+ if ( score < seg2->score )
+ {
+ seg2->score = score;
+ seg2->link = seg1;
+ }
+ }
+ }
+ }
+ }
+
+ /* now, compute the `serif' segments */
+ for ( seg1 = segments; seg1 < segment_limit; seg1++ )
+ {
+ seg2 = seg1->link;
+
+ if ( seg2 )
+ {
+ seg2->num_linked++;
+ if ( seg2->link != seg1 )
+ {
+ seg1->link = 0;
+ seg1->serif = seg2->link;
+ }
+ }
+ }
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_latin_hints_compute_edges( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_AxisHints axis = &hints->axis[dim];
+ AF_LatinAxis laxis = &((AF_LatinMetrics)hints->metrics)->axis[dim];
+ AF_Edge edges = axis->edges;
+ AF_Edge edge, edge_limit;
+
+ AF_Segment segments = axis->segments;
+ AF_Segment segment_limit = segments + axis->num_segments;
+ AF_Segment seg;
+
+ AF_Direction up_dir;
+ FT_Fixed scale;
+ FT_Pos edge_distance_threshold;
+
+
+ scale = ( dim == AF_DIMENSION_HORZ ) ? hints->x_scale
+ : hints->y_scale;
+
+ up_dir = ( dim == AF_DIMENSION_HORZ ) ? AF_DIR_UP
+ : AF_DIR_RIGHT;
+
+ /*********************************************************************/
+ /* */
+ /* We will begin by generating a sorted table of edges for the */
+ /* current direction. To do so, we simply scan each segment and try */
+ /* to find an edge in our table that corresponds to its position. */
+ /* */
+ /* If no edge is found, we create and insert a new edge in the */
+ /* sorted table. Otherwise, we simply add the segment to the edge's */
+ /* list which will be processed in the second step to compute the */
+ /* edge's properties. */
+ /* */
+ /* Note that the edges table is sorted along the segment/edge */
+ /* position. */
+ /* */
+ /*********************************************************************/
+
+ edge_distance_threshold = FT_MulFix( laxis->edge_distance_threshold,
+ scale );
+ if ( edge_distance_threshold > 64 / 4 )
+ edge_distance_threshold = 64 / 4;
+
+ edge_distance_threshold = FT_DivFix( edge_distance_threshold,
+ scale );
+
+ edge_limit = edges;
+ for ( seg = segments; seg < segment_limit; seg++ )
+ {
+ AF_Edge found = 0;
+
+
+ /* look for an edge corresponding to the segment */
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ FT_Pos dist;
+
+
+ dist = seg->pos - edge->fpos;
+ if ( dist < 0 )
+ dist = -dist;
+
+ if ( dist < edge_distance_threshold )
+ {
+ found = edge;
+ break;
+ }
+ }
+
+ if ( !found )
+ {
+ /* insert a new edge in the list and */
+ /* sort according to the position */
+ while ( edge > edges && edge[-1].fpos > seg->pos )
+ {
+ edge[0] = edge[-1];
+ edge--;
+ }
+ edge_limit++;
+
+ /* clear all edge fields */
+ FT_ZERO( edge );
+
+ /* add the segment to the new edge's list */
+ edge->first = seg;
+ edge->last = seg;
+ edge->fpos = seg->pos;
+ edge->opos = edge->pos = FT_MulFix( seg->pos, scale );
+ seg->edge_next = seg;
+ }
+ else
+ {
+ /* if an edge was found, simply add the segment to the edge's */
+ /* list */
+ seg->edge_next = edge->first;
+ edge->last->edge_next = seg;
+ edge->last = seg;
+ }
+ }
+ axis->num_edges = (FT_Int)( edge_limit - edges );
+
+
+ /*********************************************************************/
+ /* */
+ /* Good, we will now compute each edge's properties according to */
+ /* segments found on its position. Basically, these are: */
+ /* */
+ /* - edge's main direction */
+ /* - stem edge, serif edge or both (which defaults to stem then) */
+ /* - rounded edge, straight or both (which defaults to straight) */
+ /* - link for edge */
+ /* */
+ /*********************************************************************/
+
+ /* first of all, set the `edge' field in each segment -- this is */
+ /* required in order to compute edge links */
+
+ /* Note that I've tried to remove this loop, setting
+ * the "edge" field of each segment directly in the
+ * code above. For some reason, it slows down execution
+ * speed -- on a Sun.
+ */
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ seg = edge->first;
+ if ( seg )
+ do
+ {
+ seg->edge = edge;
+ seg = seg->edge_next;
+ }
+ while ( seg != edge->first );
+ }
+
+ /* now, compute each edge properties */
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ FT_Int is_round = 0; /* does it contain round segments? */
+ FT_Int is_straight = 0; /* does it contain straight segments? */
+ FT_Pos ups = 0; /* number of upwards segments */
+ FT_Pos downs = 0; /* number of downwards segments */
+
+
+ seg = edge->first;
+
+ do
+ {
+ FT_Bool is_serif;
+
+
+ /* check for roundness of segment */
+ if ( seg->flags & AF_EDGE_ROUND )
+ is_round++;
+ else
+ is_straight++;
+
+ /* check for segment direction */
+ if ( seg->dir == up_dir )
+ ups += seg->max_coord-seg->min_coord;
+ else
+ downs += seg->max_coord-seg->min_coord;
+
+ /* check for links -- if seg->serif is set, then seg->link must */
+ /* be ignored */
+ is_serif = (FT_Bool)( seg->serif && seg->serif->edge != edge );
+
+ if ( seg->link || is_serif )
+ {
+ AF_Edge edge2;
+ AF_Segment seg2;
+
+
+ edge2 = edge->link;
+ seg2 = seg->link;
+
+ if ( is_serif )
+ {
+ seg2 = seg->serif;
+ edge2 = edge->serif;
+ }
+
+ if ( edge2 )
+ {
+ FT_Pos edge_delta;
+ FT_Pos seg_delta;
+
+
+ edge_delta = edge->fpos - edge2->fpos;
+ if ( edge_delta < 0 )
+ edge_delta = -edge_delta;
+
+ seg_delta = seg->pos - seg2->pos;
+ if ( seg_delta < 0 )
+ seg_delta = -seg_delta;
+
+ if ( seg_delta < edge_delta )
+ edge2 = seg2->edge;
+ }
+ else
+ edge2 = seg2->edge;
+
+ if ( is_serif )
+ {
+ edge->serif = edge2;
+ edge2->flags |= AF_EDGE_SERIF;
+ }
+ else
+ edge->link = edge2;
+ }
+
+ seg = seg->edge_next;
+
+ } while ( seg != edge->first );
+
+ /* set the round/straight flags */
+ edge->flags = AF_EDGE_NORMAL;
+
+ if ( is_round > 0 && is_round >= is_straight )
+ edge->flags |= AF_EDGE_ROUND;
+
+ /* set the edge's main direction */
+ edge->dir = AF_DIR_NONE;
+
+ if ( ups > downs )
+ edge->dir = up_dir;
+
+ else if ( ups < downs )
+ edge->dir = -up_dir;
+
+ else if ( ups == downs )
+ edge->dir = 0; /* both up and down! */
+
+ /* gets rid of serifs if link is set */
+ /* XXX: This gets rid of many unpleasant artefacts! */
+ /* Example: the `c' in cour.pfa at size 13 */
+
+ if ( edge->serif && edge->link )
+ edge->serif = 0;
+ }
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_latin_hints_detect_features( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ af_latin_hints_compute_segments( hints, dim );
+ af_latin_hints_link_segments ( hints, dim );
+ af_latin_hints_compute_edges ( hints, dim );
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_latin_hints_compute_blue_edges( AF_GlyphHints hints,
+ AF_LatinMetrics metrics )
+ {
+ AF_AxisHints axis = &hints->axis[ AF_DIMENSION_VERT ];
+ AF_Edge edge = axis->edges;
+ AF_Edge edge_limit = edge + axis->num_edges;
+ AF_LatinAxis latin = &metrics->axis[ AF_DIMENSION_VERT ];
+ FT_Fixed scale = latin->scale;
+
+
+ /* compute which blue zones are active, i.e. have their scaled */
+ /* size < 3/4 pixels */
+
+ /* for each horizontal edge search the blue zone which is closest */
+ for ( ; edge < edge_limit; edge++ )
+ {
+ FT_Int bb;
+ AF_Width best_blue = NULL;
+ FT_Pos best_dist; /* initial threshold */
+
+
+ /* compute the initial threshold as a fraction of the EM size */
+ best_dist = FT_MulFix( metrics->units_per_em / 40, scale );
+
+ if ( best_dist > 64 / 2 )
+ best_dist = 64 / 2;
+
+ for ( bb = 0; bb < AF_LATIN_BLUE_MAX; bb++ )
+ {
+ AF_LatinBlue blue = latin->blues + bb;
+ FT_Bool is_top_blue, is_major_dir;
+
+ /* skip inactive blue zones (i.e. those that are too small
+ */
+ if ( !(blue->flags & AF_LATIN_BLUE_ACTIVE) )
+ continue;
+
+ /* if it is a top zone, check for right edges -- if it is a bottom */
+ /* zone, check for left edges */
+ /* */
+ /* of course, that's for TrueType */
+ is_top_blue = (blue->flags & AF_LATIN_BLUE_TOP) != 0;
+ is_major_dir = FT_BOOL( edge->dir == axis->major_dir );
+
+ /* if it is a top zone, the edge must be against the major */
+ /* direction; if it is a bottom zone, it must be in the major */
+ /* direction */
+ if ( is_top_blue ^ is_major_dir )
+ {
+ FT_Pos dist;
+
+
+ /* first of all, compare it to the reference position */
+ dist = edge->fpos - blue->ref.org;
+ if ( dist < 0 )
+ dist = -dist;
+
+ dist = FT_MulFix( dist, scale );
+ if ( dist < best_dist )
+ {
+ best_dist = dist;
+ best_blue = & blue->ref;
+ }
+
+ /* now, compare it to the overshoot position if the edge is */
+ /* rounded, and if the edge is over the reference position of a */
+ /* top zone, or under the reference position of a bottom zone */
+ if ( edge->flags & AF_EDGE_ROUND && dist != 0 )
+ {
+ FT_Bool is_under_ref = FT_BOOL( edge->fpos < blue->ref.org );
+
+
+ if ( is_top_blue ^ is_under_ref )
+ {
+ blue = latin->blues + bb;
+ dist = edge->fpos - blue->shoot.org;
+ if ( dist < 0 )
+ dist = -dist;
+
+ dist = FT_MulFix( dist, scale );
+ if ( dist < best_dist )
+ {
+ best_dist = dist;
+ best_blue = & blue->shoot;
+ }
+ }
+ }
+ }
+ }
+
+ if ( best_blue )
+ edge->blue_edge = best_blue;
+ }
+ }
+
+
+ static FT_Error
+ af_latin_hints_init( AF_GlyphHints hints,
+ AF_LatinMetrics metrics )
+ {
+ FT_Render_Mode mode;
+
+ af_glyph_hints_rescale( hints, (AF_ScriptMetrics)metrics );
+
+ /* correct x_scale and y_scale when needed, since they may have
+ * been modified af_latin_scale_dim above
+ */
+ hints->x_scale = metrics->axis[ AF_DIMENSION_HORZ ].scale;
+ hints->x_delta = metrics->axis[ AF_DIMENSION_HORZ ].delta;
+ hints->y_scale = metrics->axis[ AF_DIMENSION_VERT ].scale;
+ hints->y_delta = metrics->axis[ AF_DIMENSION_VERT ].delta;
+
+ /* compute flags depending on render mode, etc...
+ */
+
+ mode = metrics->root.scaler.render_mode;
+
+ /* we snap the width of vertical stems for the monochrome and
+ * horizontal LCD rendering targets only.
+ */
+ if ( mode == FT_RENDER_MODE_MONO || mode == FT_RENDER_MODE_LCD )
+ hints->other_flags |= AF_LATIN_HINTS_HORZ_SNAP;
+
+ /* we snap the width of horizontal stems for the monochrome and
+ * vertical LCD rendering targets only.
+ */
+ if ( mode == FT_RENDER_MODE_MONO || mode == FT_RENDER_MODE_LCD_V )
+ hints->other_flags |= AF_LATIN_HINTS_VERT_SNAP;
+
+ /* XXX
+ */
+ if ( mode != FT_RENDER_MODE_LIGHT )
+ hints->other_flags |= AF_LATIN_HINTS_STEM_ADJUST;
+
+ if ( mode == FT_RENDER_MODE_MONO )
+ hints->other_flags |= AF_LATIN_HINTS_MONO;
+
+ return 0;
+ }
+
+
+
+ /***************************************************************************/
+ /***************************************************************************/
+ /***** *****/
+ /***** L A T I N G L Y P H G R I D - F I T T I N G *****/
+ /***** *****/
+ /***************************************************************************/
+ /***************************************************************************/
+
+ /* snap a given width in scaled coordinates to one of the */
+ /* current standard widths */
+ static FT_Pos
+ af_latin_snap_width( AF_Width widths,
+ FT_Int count,
+ FT_Pos width )
+ {
+ int n;
+ FT_Pos best = 64 + 32 + 2;
+ FT_Pos reference = width;
+ FT_Pos scaled;
+
+
+ for ( n = 0; n < count; n++ )
+ {
+ FT_Pos w;
+ FT_Pos dist;
+
+
+ w = widths[n].cur;
+ dist = width - w;
+ if ( dist < 0 )
+ dist = -dist;
+ if ( dist < best )
+ {
+ best = dist;
+ reference = w;
+ }
+ }
+
+ scaled = FT_PIX_ROUND( reference );
+
+ if ( width >= reference )
+ {
+ if ( width < scaled + 48 )
+ width = reference;
+ }
+ else
+ {
+ if ( width > scaled - 48 )
+ width = reference;
+ }
+
+ return width;
+ }
+
+
+ /* compute the snapped width of a given stem */
+
+ static FT_Pos
+ af_latin_compute_stem_width( AF_GlyphHints hints,
+ AF_Dimension dim,
+ FT_Pos width,
+ AF_Edge_Flags base_flags,
+ AF_Edge_Flags stem_flags )
+ {
+ AF_LatinMetrics metrics = (AF_LatinMetrics) hints->metrics;
+ AF_LatinAxis axis = & metrics->axis[ dim ];
+ FT_Pos dist = width;
+ FT_Int sign = 0;
+ FT_Int vertical = AF_HINTS_DO_VERTICAL( hints );
+
+
+ if ( !AF_LATIN_HINTS_DO_STEM_ADJUST( hints ) )
+ return width;
+
+ if ( dist < 0 )
+ {
+ dist = -width;
+ sign = 1;
+ }
+
+ if ( ( vertical && !AF_LATIN_HINTS_DO_VERT_SNAP( hints ) ) ||
+ ( !vertical && !AF_LATIN_HINTS_DO_HORZ_SNAP( hints ) ) )
+ {
+ /* smooth hinting process: very lightly quantize the stem width */
+ /* */
+
+ /* leave the widths of serifs alone */
+
+ if ( ( stem_flags & AF_EDGE_SERIF ) && vertical && ( dist < 3 * 64 ) )
+ goto Done_Width;
+
+ else if ( ( base_flags & AF_EDGE_ROUND ) )
+ {
+ if ( dist < 80 )
+ dist = 64;
+ }
+ else if ( dist < 56 )
+ dist = 56;
+
+ if ( axis->width_count > 0 )
+ {
+ FT_Pos delta;
+
+ /* compare to standard width
+ */
+ if ( axis->width_count > 0 )
+ {
+ delta = dist - axis->widths[0].cur;
+
+ if ( delta < 0 )
+ delta = -delta;
+
+ if ( delta < 40 )
+ {
+ dist = axis->widths[ 0 ].cur;
+ if ( dist < 48 )
+ dist = 48;
+
+ goto Done_Width;
+ }
+ }
+
+ if ( dist < 3 * 64 )
+ {
+ delta = dist & 63;
+ dist &= -64;
+
+ if ( delta < 10 )
+ dist += delta;
+
+ else if ( delta < 32 )
+ dist += 10;
+
+ else if ( delta < 54 )
+ dist += 54;
+
+ else
+ dist += delta;
+ }
+ else
+ dist = ( dist + 32 ) & ~63;
+ }
+ }
+ else
+ {
+ /* strong hinting process: snap the stem width to integer pixels */
+ /* */
+ dist = af_latin_snap_width( axis->widths, axis->width_count, dist );
+
+ if ( vertical )
+ {
+ /* in the case of vertical hinting, always round */
+ /* the stem heights to integer pixels */
+ if ( dist >= 64 )
+ dist = ( dist + 16 ) & ~63;
+ else
+ dist = 64;
+ }
+ else
+ {
+ if ( AF_LATIN_HINTS_DO_MONO( hints ) )
+ {
+ /* monochrome horizontal hinting: snap widths to integer pixels */
+ /* with a different threshold */
+ if ( dist < 64 )
+ dist = 64;
+ else
+ dist = ( dist + 32 ) & ~63;
+ }
+ else
+ {
+ /* for horizontal anti-aliased hinting, we adopt a more subtle */
+ /* approach: we strengthen small stems, round stems whose size */
+ /* is between 1 and 2 pixels to an integer, otherwise nothing */
+ if ( dist < 48 )
+ dist = ( dist + 64 ) >> 1;
+
+ else if ( dist < 128 )
+ dist = ( dist + 22 ) & ~63;
+ else
+ /* round otherwise to prevent color fringes in LCD mode */
+ dist = ( dist + 32 ) & ~63;
+ }
+ }
+ }
+
+ Done_Width:
+ if ( sign )
+ dist = -dist;
+
+ return dist;
+ }
+
+
+
+ /* align one stem edge relative to the previous stem edge */
+ static void
+ af_latin_align_linked_edge( AF_GlyphHints hints,
+ AF_Dimension dim,
+ AF_Edge base_edge,
+ AF_Edge stem_edge )
+ {
+ FT_Pos dist = stem_edge->opos - base_edge->opos;
+
+ 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;
+ }
+
+
+ static void
+ af_latin_align_serif_edge( AF_GlyphHints hints,
+ AF_Edge base,
+ AF_Edge serif )
+ {
+ FT_UNUSED( hints );
+
+ serif->pos = base->pos + (serif->opos - base->opos);
+ }
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /*************************************************************************/
+ /**** ****/
+ /**** E D G E H I N T I N G ****/
+ /**** ****/
+ /*************************************************************************/
+ /*************************************************************************/
+ /*************************************************************************/
+
+
+ FT_LOCAL_DEF( void )
+ af_latin_hint_edges( AF_GlyphHints hints,
+ AF_Dimension dim )
+ {
+ AF_AxisHints axis = & hints->axis[dim];
+ AF_Edge edges = axis->edges;
+ AF_Edge edge_limit = edges + axis->num_edges;
+ FT_Int n_edges;
+ AF_Edge edge;
+ AF_Edge anchor = 0;
+ FT_Int has_serifs = 0;
+
+
+ /* we begin by aligning all stems relative to the blue zone */
+ /* if needed -- that's only for horizontal edges */
+ if ( dim == AF_DIMENSION_VERT )
+ {
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ AF_Width blue;
+ AF_Edge edge1, edge2;
+
+
+ if ( edge->flags & AF_EDGE_DONE )
+ continue;
+
+ blue = edge->blue_edge;
+ edge1 = NULL;
+ edge2 = edge->link;
+
+ if ( blue )
+ {
+ edge1 = edge;
+ }
+ else if ( edge2 && edge2->blue_edge )
+ {
+ blue = edge2->blue_edge;
+ edge1 = edge2;
+ edge2 = edge;
+ }
+
+ if ( !edge1 )
+ continue;
+
+ edge1->pos = blue->fit;
+ edge1->flags |= AF_EDGE_DONE;
+
+ if ( edge2 && !edge2->blue_edge )
+ {
+ af_latin_align_linked_edge( hints, dim, edge1, edge2 );
+ edge2->flags |= AF_EDGE_DONE;
+ }
+
+ if ( !anchor )
+ anchor = edge;
+ }
+ }
+
+ /* now we will align all stem edges, trying to maintain the */
+ /* relative order of stems in the glyph */
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ AF_Edge edge2;
+
+
+ if ( edge->flags & AF_EDGE_DONE )
+ continue;
+
+ /* skip all non-stem edges */
+ edge2 = edge->link;
+ if ( !edge2 )
+ {
+ has_serifs++;
+ continue;
+ }
+
+ /* now align the stem */
+
+ /* this should not happen, but it's better to be safe */
+ if ( edge2->blue_edge || edge2 < edge )
+ {
+ af_latin_align_linked_edge( hints, dim, edge2, edge );
+ edge->flags |= AF_EDGE_DONE;
+ continue;
+ }
+
+ if ( !anchor )
+ {
+ FT_Pos org_len, org_center, cur_len;
+ FT_Pos cur_pos1, error1, error2, u_off, d_off;
+
+
+ org_len = edge2->opos - edge->opos;
+ cur_len = af_latin_compute_stem_width( hints, dim, org_len,
+ edge->flags, edge2->flags );
+ if ( cur_len <= 64 )
+ u_off = d_off = 32;
+ else
+ {
+ u_off = 38;
+ d_off = 26;
+ }
+
+ if ( cur_len < 96 )
+ {
+ org_center = edge->opos + ( org_len >> 1 );
+
+ cur_pos1 = FT_PIX_ROUND( org_center );
+
+ error1 = org_center - ( cur_pos1 - u_off );
+ if ( error1 < 0 )
+ error1 = -error1;
+
+ error2 = org_center - ( cur_pos1 + d_off );
+ if ( error2 < 0 )
+ error2 = -error2;
+
+ if ( error1 < error2 )
+ cur_pos1 -= u_off;
+ else
+ cur_pos1 += d_off;
+
+ edge->pos = cur_pos1 - cur_len / 2;
+ edge2->pos = cur_pos1 + cur_len / 2;
+
+ }
+ else
+ edge->pos = FT_PIX_ROUND( edge->opos );
+
+ anchor = edge;
+
+ edge->flags |= AF_EDGE_DONE;
+
+ af_latin_align_linked_edge( hints, dim, edge, edge2 );
+ }
+ else
+ {
+ FT_Pos org_pos, org_len, org_center, cur_len;
+ FT_Pos cur_pos1, cur_pos2, delta1, delta2;
+
+
+ org_pos = anchor->pos + ( edge->opos - anchor->opos );
+ org_len = edge2->opos - edge->opos;
+ org_center = org_pos + ( org_len >> 1 );
+
+ cur_len = af_latin_compute_stem_width( hints, dim, org_len,
+ edge->flags, edge2->flags );
+
+ if ( cur_len < 96 )
+ {
+ FT_Pos u_off, d_off;
+
+
+ cur_pos1 = FT_PIX_ROUND( org_center );
+
+ if (cur_len <= 64 )
+ u_off = d_off = 32;
+ else
+ {
+ u_off = 38;
+ d_off = 26;
+ }
+
+ delta1 = org_center - ( cur_pos1 - u_off );
+ if ( delta1 < 0 )
+ delta1 = -delta1;
+
+ delta2 = org_center - ( cur_pos1 + d_off );
+ if ( delta2 < 0 )
+ delta2 = -delta2;
+
+ if ( delta1 < delta2 )
+ cur_pos1 -= u_off;
+ else
+ cur_pos1 += d_off;
+
+ edge->pos = cur_pos1 - cur_len / 2;
+ edge2->pos = cur_pos1 + cur_len / 2;
+ }
+ else
+ {
+ org_pos = anchor->pos + ( edge->opos - anchor->opos );
+ org_len = edge2->opos - edge->opos;
+ org_center = org_pos + ( org_len >> 1 );
+
+ 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 );
+ if ( delta1 < 0 )
+ delta1 = -delta1;
+
+ cur_pos2 = FT_PIX_ROUND( org_pos + org_len ) - cur_len;
+ delta2 = ( cur_pos2 + ( cur_len >> 1 ) - org_center );
+ if ( delta2 < 0 )
+ delta2 = -delta2;
+
+ edge->pos = ( delta1 < delta2 ) ? cur_pos1 : cur_pos2;
+ edge2->pos = edge->pos + cur_len;
+ }
+
+ edge->flags |= AF_EDGE_DONE;
+ edge2->flags |= AF_EDGE_DONE;
+
+ if ( edge > edges && edge->pos < edge[-1].pos )
+ edge->pos = edge[-1].pos;
+ }
+ }
+
+ /* make sure that lowercase m's maintain their symmetry */
+
+ /* In general, lowercase m's have six vertical edges if they are sans */
+ /* serif, or twelve if they are avec serif. This implementation is */
+ /* based on that assumption, and seems to work very well with most */
+ /* faces. However, if for a certain face this assumption is not */
+ /* true, the m is just rendered like before. In addition, any stem */
+ /* correction will only be applied to symmetrical glyphs (even if the */
+ /* glyph is not an m), so the potential for unwanted distortion is */
+ /* relatively low. */
+
+ /* We don't handle horizontal edges since we can't easily assure that */
+ /* the third (lowest) stem aligns with the base line; it might end up */
+ /* one pixel higher or lower. */
+
+ n_edges = edge_limit - edges;
+ if ( dim == AF_DIMENSION_HORZ && ( n_edges == 6 || n_edges == 12 ) )
+ {
+ AF_Edge edge1, edge2, edge3;
+ FT_Pos dist1, dist2, span, delta;
+
+
+ if ( n_edges == 6 )
+ {
+ edge1 = edges;
+ edge2 = edges + 2;
+ edge3 = edges + 4;
+ }
+ else
+ {
+ edge1 = edges + 1;
+ edge2 = edges + 5;
+ edge3 = edges + 9;
+ }
+
+ dist1 = edge2->opos - edge1->opos;
+ dist2 = edge3->opos - edge2->opos;
+
+ span = dist1 - dist2;
+ if ( span < 0 )
+ span = -span;
+
+ if ( span < 8 )
+ {
+ delta = edge3->pos - ( 2 * edge2->pos - edge1->pos );
+ edge3->pos -= delta;
+ if ( edge3->link )
+ edge3->link->pos -= delta;
+
+ /* move the serifs along with the stem */
+ if ( n_edges == 12 )
+ {
+ ( edges + 8 )->pos -= delta;
+ ( edges + 11 )->pos -= delta;
+ }
+
+ edge3->flags |= AF_EDGE_DONE;
+ if ( edge3->link )
+ edge3->link->flags |= AF_EDGE_DONE;
+ }
+ }
+
+ if ( has_serifs || !anchor )
+ {
+ /* now hint the remaining edges (serifs and single) in order
+ * to complete our processing
+ */
+ for ( edge = edges; edge < edge_limit; edge++ )
+ {
+ if ( edge->flags & AF_EDGE_DONE )
+ continue;
+
+ if ( edge->serif )
+ af_latin_align_serif_edge( hints, edge->serif, edge );
+ else if ( !anchor )
+ {
+ edge->pos = FT_PIX_ROUND( edge->opos );
+ anchor = edge;
+ }
+ else
+ edge->pos = anchor->pos +
+ FT_PIX_ROUND( edge->opos - anchor->opos );
+
+ edge->flags |= AF_EDGE_DONE;
+
+ if ( edge > edges && edge->pos < edge[-1].pos )
+ edge->pos = edge[-1].pos;
+
+ if ( edge + 1 < edge_limit &&
+ edge[1].flags & AF_EDGE_DONE &&
+ edge->pos > edge[1].pos )
+ edge->pos = edge[1].pos;
+ }
+ }
+ }
+
+
+ static FT_Error
+ af_latin_hints_apply( AF_GlyphHints hints,
+ FT_Outline* outline,
+ AF_LatinMetrics metrics )
+ {
+ FT_Error error;
+ AF_Dimension dim;
+
+ error = af_glyph_hints_reload( hints, outline );
+ if ( error )
+ goto Exit;
+
+ /* analyze glyph outline
+ */
+ if ( AF_HINTS_DO_HORIZONTAL(hints) )
+ af_latin_hints_detect_features( hints, AF_DIMENSION_HORZ );
+
+ if ( AF_HINTS_DO_VERTICAL(hints) )
+ {
+ af_latin_hints_detect_features( hints, AF_DIMENSION_VERT );
+ af_latin_hints_compute_blue_edges( hints, metrics );
+ }
+
+ /* grid-fit the outline
+ */
+ for ( dim = 0; dim < AF_DIMENSION_MAX; dim++ )
+ {
+ if ( (dim == AF_DIMENSION_HORZ && AF_HINTS_DO_HORIZONTAL(hints)) ||
+ (dim == AF_DIMENSION_VERT && AF_HINTS_DO_VERTICAL(hints)) )
+ {
+ af_latin_hint_edges( hints, dim );
+ af_glyph_hints_align_edge_points( hints, dim );
+ af_glyph_hints_align_strong_points( hints, dim );
+ af_glyph_hints_align_weak_points( hints, dim );
+ }
+ }
+ af_glyph_hints_save( hints, outline );
+
+ Exit:
+ return error;
+ }
+
+ /***************************************************************************/
+ /***************************************************************************/
+ /***** *****/
+ /***** L A T I N S C R I P T C L A S S *****/
+ /***** *****/
+ /***************************************************************************/
+ /***************************************************************************/
+
+ static const AF_Script_UniRangeRec af_latin_uniranges[] =
+ {
+ { 32, 127 }, /* XXX: TODO: Add new Unicode ranges here !! */
+ { 160, 255 },
+ { 0, 0 }
+ };
+
+
+ FT_LOCAL_DEF( const AF_ScriptClassRec ) af_latin_script_class =
+ {
+ AF_SCRIPT_LATIN,
+ af_latin_uniranges,
+
+ sizeof( AF_LatinMetricsRec ),
+ (AF_Script_InitMetricsFunc) af_latin_metrics_init,
+ (AF_Script_ScaleMetricsFunc) af_latin_metrics_scale,
+ (AF_Script_DoneMetricsFunc) NULL,
+
+ (AF_Script_InitHintsFunc) af_latin_hints_init,
+ (AF_Script_ApplyHintsFunc) af_latin_hints_apply
+ };
+
diff --git a/nx-X11/extras/freetype2/src/autofit/aflatin.h b/nx-X11/extras/freetype2/src/autofit/aflatin.h
new file mode 100644
index 000000000..e7e8e4842
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/aflatin.h
@@ -0,0 +1,169 @@
+#ifndef __AFLATIN_H__
+#define __AFLATIN_H__
+
+#include "afhints.h"
+
+FT_BEGIN_HEADER
+
+ /*
+ * the latin-specific script class
+ *
+ */
+ FT_LOCAL( const AF_ScriptClassRec ) af_latin_script_class;
+
+ /***************************************************************************/
+ /***************************************************************************/
+ /***** *****/
+ /***** L A T I N G L O B A L M E T R I C S *****/
+ /***** *****/
+ /***************************************************************************/
+ /***************************************************************************/
+
+ /*
+ * the following declarations could be embedded in the file "aflatin.c"
+ * they've been made semi-public to allow alternate script hinters to
+ * re-use some of them
+ */
+
+ /*
+ * Latin (global) metrics management
+ *
+ */
+
+ enum
+ {
+ AF_LATIN_BLUE_CAPITAL_TOP,
+ AF_LATIN_BLUE_CAPITAL_BOTTOM,
+ AF_LATIN_BLUE_SMALL_F_TOP,
+ AF_LATIN_BLUE_SMALL_TOP,
+ AF_LATIN_BLUE_SMALL_BOTTOM,
+ AF_LATIN_BLUE_SMALL_MINOR,
+
+ AF_LATIN_BLUE_MAX
+ };
+
+#define AF_LATIN_IS_TOP_BLUE( b ) ( (b) == AF_LATIN_BLUE_CAPITAL_TOP || \
+ (b) == AF_LATIN_BLUE_SMALL_F_TOP || \
+ (b) == AF_LATIN_BLUE_SMALL_TOP )
+
+#define AF_LATIN_MAX_WIDTHS 16
+#define AF_LATIN_MAX_BLUES AF_LATIN_BLUE_MAX
+
+ enum
+ {
+ AF_LATIN_BLUE_ACTIVE = (1 << 0),
+ AF_LATIN_BLUE_TOP = (1 << 1),
+ AF_LATIN_BLUE_ADJUSTMENT = (1 << 2), /* used for scale adjustment */
+ /* optimization */
+ AF_LATIN_BLUE_FLAG_MAX
+ };
+
+
+ typedef struct AF_LatinBlueRec_
+ {
+ AF_WidthRec ref;
+ AF_WidthRec shoot;
+ FT_UInt flags;
+
+ } AF_LatinBlueRec, *AF_LatinBlue;
+
+
+ typedef struct AF_LatinAxisRec_
+ {
+ FT_Fixed scale;
+ FT_Pos delta;
+
+ FT_UInt width_count;
+ AF_WidthRec widths[ AF_LATIN_MAX_WIDTHS ];
+ FT_Pos edge_distance_threshold;
+
+ /* ignored for horizontal metrics */
+ FT_Bool control_overshoot;
+ FT_UInt blue_count;
+ AF_LatinBlueRec blues[ AF_LATIN_BLUE_MAX ];
+
+ FT_Fixed org_scale;
+ FT_Pos org_delta;
+
+ } AF_LatinAxisRec, *AF_LatinAxis;
+
+
+ typedef struct AF_LatinMetricsRec_
+ {
+ AF_ScriptMetricsRec root;
+ FT_UInt units_per_em;
+ AF_LatinAxisRec axis[ AF_DIMENSION_MAX ];
+
+ } AF_LatinMetricsRec, *AF_LatinMetrics;
+
+
+
+ FT_LOCAL( FT_Error )
+ af_latin_metrics_init( AF_LatinMetrics metrics,
+ FT_Face face );
+
+ FT_LOCAL( void )
+ af_latin_metrics_scale( AF_LatinMetrics metrics,
+ AF_Scaler scaler );
+
+
+
+ /***************************************************************************/
+ /***************************************************************************/
+ /***** *****/
+ /***** L A T I N G L Y P H A N A L Y S I S *****/
+ /***** *****/
+ /***************************************************************************/
+ /***************************************************************************/
+
+ enum
+ {
+ AF_LATIN_HINTS_HORZ_SNAP = (1 << 0), /* enable stem width snapping */
+ AF_LATIN_HINTS_VERT_SNAP = (1 << 1), /* enable stem height snapping */
+ AF_LATIN_HINTS_STEM_ADJUST = (1 << 2), /* enable stem width/height adjustment */
+ AF_LATIN_HINTS_MONO = (1 << 3) /* indicate monochrome rendering */
+ };
+
+#define AF_LATIN_HINTS_DO_HORZ_SNAP(h) \
+ AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_HORZ_SNAP)
+
+#define AF_LATIN_HINTS_DO_VERT_SNAP(h) \
+ AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_VERT_SNAP)
+
+#define AF_LATIN_HINTS_DO_STEM_ADJUST(h) \
+ AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_STEM_ADJUST)
+
+#define AF_LATIN_HINTS_DO_MONO(h) \
+ AF_HINTS_TEST_OTHER(h,AF_LATIN_HINTS_MONO)
+
+
+ /* this shouldn't normally be exported. However, other scripts might
+ * like to use this function as-is
+ */
+ FT_LOCAL( void )
+ af_latin_hints_compute_segments( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ /* this shouldn't normally be exported. However, other scripts might
+ * want to use this function as-is
+ */
+ FT_LOCAL( void )
+ af_latin_hints_link_segments( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ /* this shouldn't normally be exported. However, other scripts might
+ * want to use this function as-is
+ */
+ FT_LOCAL( void )
+ af_latin_hints_compute_edges( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ FT_LOCAL( void )
+ af_latin_hints_detect_features( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFLATIN_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/afloader.c b/nx-X11/extras/freetype2/src/autofit/afloader.c
new file mode 100644
index 000000000..6782ee8de
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afloader.c
@@ -0,0 +1,467 @@
+#include "afloader.h"
+#include "afhints.h"
+#include "afglobal.h"
+#include "aflatin.h"
+
+ FT_LOCAL_DEF( FT_Error )
+ af_loader_init( AF_Loader loader,
+ FT_Memory memory )
+ {
+ FT_Error error;
+
+ FT_ZERO( loader );
+
+ af_glyph_hints_init( &loader->hints, memory );
+
+ error = FT_GlyphLoader_New( memory, &loader->gloader );
+ if ( !error )
+ {
+ error = FT_GlyphLoader_CreateExtra( loader->gloader );
+ if ( error )
+ {
+ FT_GlyphLoader_Done( loader->gloader );
+ loader->gloader = NULL;
+ }
+ }
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_loader_reset( AF_Loader loader,
+ FT_Face face )
+ {
+ FT_Error error = 0;
+
+ loader->face = face;
+ loader->globals = (AF_FaceGlobals) face->autohint.data;
+
+ FT_GlyphLoader_Rewind( loader->gloader );
+
+ if ( loader->globals == NULL )
+ {
+ error = af_face_globals_new( face, &loader->globals );
+ if ( !error )
+ {
+ face->autohint.data = (FT_Pointer) loader->globals;
+ face->autohint.finalizer = (FT_Generic_Finalizer) af_face_globals_free;
+ }
+ }
+ return error;
+ }
+
+
+ FT_LOCAL_DEF( void )
+ af_loader_done( AF_Loader loader )
+ {
+ loader->face = NULL;
+ loader->globals = NULL;
+
+ FT_GlyphLoader_Done( loader->gloader );
+ loader->gloader = NULL;
+ }
+
+
+ static FT_Error
+ af_loader_load_g( AF_Loader loader,
+ AF_Scaler scaler,
+ FT_UInt glyph_index,
+ FT_Int32 load_flags,
+ FT_UInt depth )
+ {
+ FT_Error error = 0;
+ FT_Face face = loader->face;
+ FT_GlyphLoader gloader = loader->gloader;
+ AF_ScriptMetrics metrics = loader->metrics;
+ AF_GlyphHints hints = &loader->hints;
+ FT_GlyphSlot slot = face->glyph;
+ FT_Slot_Internal internal = slot->internal;
+
+ error = FT_Load_Glyph( face, glyph_index, load_flags );
+ if ( error )
+ goto Exit;
+
+ loader->transformed = internal->glyph_transformed;
+ if ( loader->transformed )
+ {
+ FT_Matrix inverse;
+
+ loader->trans_matrix = internal->glyph_matrix;
+ loader->trans_delta = internal->glyph_delta;
+
+ inverse = loader->trans_matrix;
+ FT_Matrix_Invert( &inverse );
+ FT_Vector_Transform( &loader->trans_delta, &inverse );
+ }
+
+ /* set linear metrics */
+ slot->linearHoriAdvance = slot->metrics.horiAdvance;
+ slot->linearVertAdvance = slot->metrics.vertAdvance;
+
+ switch ( slot->format )
+ {
+ case FT_GLYPH_FORMAT_OUTLINE:
+ /* translate the loaded glyph when an internal transform
+ * is needed
+ */
+ if ( loader->transformed )
+ FT_Outline_Translate( &slot->outline,
+ loader->trans_delta.x,
+ loader->trans_delta.y );
+
+ /* copy the outline points in the loader's current */
+ /* extra points which is used to keep original glyph coordinates */
+ error = FT_GlyphLoader_CheckPoints( gloader,
+ slot->outline.n_points + 4,
+ slot->outline.n_contours );
+ if ( error )
+ goto Exit;
+
+ FT_ARRAY_COPY( gloader->current.outline.points,
+ slot->outline.points,
+ slot->outline.n_points );
+
+ FT_ARRAY_COPY( gloader->current.extra_points,
+ slot->outline.points,
+ slot->outline.n_points );
+
+ FT_ARRAY_COPY( gloader->current.outline.contours,
+ slot->outline.contours,
+ slot->outline.n_contours );
+
+ FT_ARRAY_COPY( gloader->current.outline.tags,
+ slot->outline.tags,
+ slot->outline.n_points );
+
+ gloader->current.outline.n_points = slot->outline.n_points;
+ gloader->current.outline.n_contours = slot->outline.n_contours;
+
+ /* compute original horizontal phantom points (and ignore */
+ /* vertical ones) */
+ loader->pp1.x = hints->x_delta;
+ loader->pp1.y = hints->y_delta;
+ loader->pp2.x = FT_MulFix( slot->metrics.horiAdvance,
+ hints->x_scale ) + hints->x_delta;
+ loader->pp2.y = hints->y_delta;
+
+ /* be sure to check for spacing glyphs */
+ if ( slot->outline.n_points == 0 )
+ goto Hint_Metrics;
+
+ /* now load the slot image into the auto-outline and run the */
+ /* automatic hinting process */
+ metrics->clazz->script_hints_apply( hints,
+ &gloader->current.outline,
+ metrics );
+
+ /* we now need to hint the metrics according to the change in */
+ /* width/positioning that occured during the hinting process */
+ {
+ FT_Pos old_advance, old_rsb, old_lsb, new_lsb;
+ FT_Pos pp1x_uh, pp2x_uh;
+ AF_AxisHints axis = &hints->axis[ AF_DIMENSION_HORZ ];
+ AF_Edge edge1 = axis->edges; /* leftmost edge */
+ AF_Edge edge2 = edge1 +
+ axis->num_edges - 1; /* rightmost edge */
+
+
+ if ( edge2 > edge1 )
+ {
+ old_advance = loader->pp2.x;
+ old_rsb = old_advance - edge2->opos;
+ old_lsb = edge1->opos;
+ new_lsb = edge1->pos;
+
+ /* remember unhinted values to later account */
+ /* for rounding errors */
+
+ pp1x_uh = new_lsb - old_lsb;
+ pp2x_uh = edge2->pos + old_rsb;
+
+ /* prefer too much space over too little space */
+ /* for very small sizes */
+
+ if ( old_lsb < 24 )
+ pp1x_uh -= 5;
+
+ if ( old_rsb < 24 )
+ pp2x_uh += 5;
+
+ loader->pp1.x = FT_PIX_ROUND( pp1x_uh );
+ loader->pp2.x = FT_PIX_ROUND( pp2x_uh );
+
+ slot->lsb_delta = loader->pp1.x - pp1x_uh;
+ slot->rsb_delta = loader->pp2.x - pp2x_uh;
+
+#if 0
+ /* try to fix certain bad advance computations */
+ if ( loader->pp2.x + loader->pp1.x == edge2->pos && old_rsb > 4 )
+ loader->pp2.x += 64;
+#endif
+ }
+ else
+ {
+ loader->pp1.x = FT_PIX_ROUND( loader->pp1.x );
+ loader->pp2.x = FT_PIX_ROUND( loader->pp2.x );
+ }
+ }
+
+ /* good, we simply add the glyph to our loader's base */
+ FT_GlyphLoader_Add( gloader );
+ break;
+
+ case FT_GLYPH_FORMAT_COMPOSITE:
+ {
+ FT_UInt nn, num_subglyphs = slot->num_subglyphs;
+ FT_UInt num_base_subgs, start_point;
+ FT_SubGlyph subglyph;
+
+
+ start_point = gloader->base.outline.n_points;
+
+ /* first of all, copy the subglyph descriptors in the glyph loader */
+ error = FT_GlyphLoader_CheckSubGlyphs( gloader, num_subglyphs );
+ if ( error )
+ goto Exit;
+
+ FT_ARRAY_COPY( gloader->current.subglyphs,
+ slot->subglyphs,
+ num_subglyphs );
+
+ gloader->current.num_subglyphs = num_subglyphs;
+ num_base_subgs = gloader->base.num_subglyphs;
+
+ /* now, read each subglyph independently */
+ for ( nn = 0; nn < num_subglyphs; nn++ )
+ {
+ FT_Vector pp1, pp2;
+ FT_Pos x, y;
+ FT_UInt num_points, num_new_points, num_base_points;
+
+
+ /* gloader.current.subglyphs can change during glyph loading due */
+ /* to re-allocation -- we must recompute the current subglyph on */
+ /* each iteration */
+ subglyph = gloader->base.subglyphs + num_base_subgs + nn;
+
+ pp1 = loader->pp1;
+ pp2 = loader->pp2;
+
+ num_base_points = gloader->base.outline.n_points;
+
+ error = af_loader_load_g( loader, scaler, subglyph->index,
+ load_flags, depth + 1 );
+ if ( error )
+ goto Exit;
+
+ /* recompute subglyph pointer */
+ subglyph = gloader->base.subglyphs + num_base_subgs + nn;
+
+ if ( subglyph->flags & FT_SUBGLYPH_FLAG_USE_MY_METRICS )
+ {
+ pp1 = loader->pp1;
+ pp2 = loader->pp2;
+ }
+ else
+ {
+ loader->pp1 = pp1;
+ loader->pp2 = pp2;
+ }
+
+ num_points = gloader->base.outline.n_points;
+ num_new_points = num_points - num_base_points;
+
+ /* now perform the transform required for this subglyph */
+
+ if ( subglyph->flags & ( FT_SUBGLYPH_FLAG_SCALE |
+ FT_SUBGLYPH_FLAG_XY_SCALE |
+ FT_SUBGLYPH_FLAG_2X2 ) )
+ {
+ FT_Vector* cur = gloader->base.outline.points +
+ num_base_points;
+ FT_Vector* org = gloader->base.extra_points +
+ num_base_points;
+ FT_Vector* limit = cur + num_new_points;
+
+
+ for ( ; cur < limit; cur++, org++ )
+ {
+ FT_Vector_Transform( cur, &subglyph->transform );
+ FT_Vector_Transform( org, &subglyph->transform );
+ }
+ }
+
+ /* apply offset */
+
+ if ( !( subglyph->flags & FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES ) )
+ {
+ FT_Int k = subglyph->arg1;
+ FT_UInt l = subglyph->arg2;
+ FT_Vector* p1;
+ FT_Vector* p2;
+
+
+ if ( start_point + k >= num_base_points ||
+ l >= (FT_UInt)num_new_points )
+ {
+ error = FT_Err_Invalid_Composite;
+ goto Exit;
+ }
+
+ l += num_base_points;
+
+ /* for now, only use the current point coordinates; */
+ /* we may consider another approach in the near future */
+ p1 = gloader->base.outline.points + start_point + k;
+ p2 = gloader->base.outline.points + start_point + l;
+
+ x = p1->x - p2->x;
+ y = p1->y - p2->y;
+ }
+ else
+ {
+ x = FT_MulFix( subglyph->arg1, hints->x_scale ) + hints->x_delta;
+ y = FT_MulFix( subglyph->arg2, hints->y_scale ) + hints->y_delta;
+
+ x = FT_PIX_ROUND(x);
+ y = FT_PIX_ROUND(y);
+ }
+
+ {
+ FT_Outline dummy = gloader->base.outline;
+
+
+ dummy.points += num_base_points;
+ dummy.n_points = (short)num_new_points;
+
+ FT_Outline_Translate( &dummy, x, y );
+ }
+ }
+ }
+ break;
+
+ default:
+ /* we don't support other formats (yet?) */
+ error = FT_Err_Unimplemented_Feature;
+ }
+
+ Hint_Metrics:
+ if ( depth == 0 )
+ {
+ FT_BBox bbox;
+
+
+ /* transform the hinted outline if needed */
+ if ( loader->transformed )
+ FT_Outline_Transform( &gloader->base.outline, &loader->trans_matrix );
+
+ /* we must translate our final outline by -pp1.x and compute */
+ /* the new metrics */
+ if ( loader->pp1.x )
+ FT_Outline_Translate( &gloader->base.outline, -loader->pp1.x, 0 );
+
+ FT_Outline_Get_CBox( &gloader->base.outline, &bbox );
+
+ bbox.xMin = FT_PIX_FLOOR( bbox.xMin );
+ bbox.yMin = FT_PIX_FLOOR( bbox.yMin );
+ bbox.xMax = FT_PIX_CEIL( bbox.xMax );
+ bbox.yMax = FT_PIX_CEIL( bbox.yMax );
+
+ slot->metrics.width = bbox.xMax - bbox.xMin;
+ slot->metrics.height = bbox.yMax - bbox.yMin;
+ slot->metrics.horiBearingX = bbox.xMin;
+ slot->metrics.horiBearingY = bbox.yMax;
+
+ /* for mono-width fonts (like Andale, Courier, etc.) we need */
+ /* to keep the original rounded advance width */
+#if 0
+ if ( !FT_IS_FIXED_WIDTH( slot->face ) )
+ slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x;
+ else
+ slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance,
+ x_scale );
+#else
+ /* for mono-width fonts (like Andale, Courier, etc.) we need */
+ /* to keep the original rounded advance width */
+ if ( !FT_IS_FIXED_WIDTH( slot->face ) )
+ slot->metrics.horiAdvance = loader->pp2.x - loader->pp1.x;
+ else
+ slot->metrics.horiAdvance = FT_MulFix( slot->metrics.horiAdvance,
+ metrics->scaler.x_scale );
+#endif
+
+ slot->metrics.horiAdvance = FT_PIX_ROUND( slot->metrics.horiAdvance );
+
+ /* now copy outline into glyph slot */
+ FT_GlyphLoader_Rewind( internal->loader );
+ error = FT_GlyphLoader_CopyPoints( internal->loader, gloader );
+ if ( error )
+ goto Exit;
+
+ slot->outline = internal->loader->base.outline;
+ slot->format = FT_GLYPH_FORMAT_OUTLINE;
+ }
+
+#ifdef DEBUG_HINTER
+ af_debug_hinter = hinter;
+#endif
+
+ Exit:
+ return error;
+ }
+
+
+
+
+ FT_LOCAL_DEF( FT_Error )
+ af_loader_load_glyph( AF_Loader loader,
+ FT_Face face,
+ FT_UInt gindex,
+ FT_UInt32 load_flags )
+ {
+ FT_Error error;
+ FT_Size size = face->size;
+ AF_ScalerRec scaler;
+
+ if ( !size )
+ return FT_Err_Invalid_Argument;
+
+ FT_ZERO( &scaler );
+
+ scaler.face = face;
+ scaler.x_scale = size->metrics.x_scale;
+ scaler.x_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */
+ scaler.y_scale = size->metrics.y_scale;
+ scaler.y_delta = 0; /* XXX: TODO: add support for sub-pixel hinting */
+
+ scaler.render_mode = FT_LOAD_TARGET_MODE( load_flags );
+ scaler.flags = 0; /* XXX: fix this */
+
+ error = af_loader_reset( loader, face );
+ if ( !error )
+ {
+ AF_ScriptMetrics metrics;
+
+ error = af_face_globals_get_metrics( loader->globals, gindex, &metrics );
+ if ( !error )
+ {
+ loader->metrics = metrics;
+
+ metrics->scaler = scaler;
+
+ if ( metrics->clazz->script_metrics_scale )
+ metrics->clazz->script_metrics_scale( metrics, &scaler );
+
+ load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_IGNORE_TRANSFORM;
+ load_flags &= ~FT_LOAD_RENDER;
+
+ error = metrics->clazz->script_hints_init( &loader->hints, metrics );
+ if ( error )
+ goto Exit;
+
+ error = af_loader_load_g( loader, &scaler, gindex, load_flags, 0 );
+ }
+ }
+ Exit:
+ return error;
+ }
diff --git a/nx-X11/extras/freetype2/src/autofit/afloader.h b/nx-X11/extras/freetype2/src/autofit/afloader.h
new file mode 100644
index 000000000..12361560a
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afloader.h
@@ -0,0 +1,50 @@
+#ifndef __AF_LOADER_H__
+#define __AF_LOADER_H__
+
+#include "afhints.h"
+#include "afglobal.h"
+
+FT_BEGIN_HEADER
+
+ typedef struct AF_LoaderRec_
+ {
+ FT_Face face; /* current face */
+ AF_FaceGlobals globals; /* current face globals */
+ FT_GlyphLoader gloader; /* glyph loader */
+ AF_GlyphHintsRec hints;
+ AF_ScriptMetrics metrics;
+ FT_Bool transformed;
+ FT_Matrix trans_matrix;
+ FT_Vector trans_delta;
+ FT_Vector pp1;
+ FT_Vector pp2;
+ /* we don't handle vertical phantom points */
+
+ } AF_LoaderRec, *AF_Loader;
+
+
+ FT_LOCAL( FT_Error )
+ af_loader_init( AF_Loader loader,
+ FT_Memory memory );
+
+
+ FT_LOCAL( FT_Error )
+ af_loader_reset( AF_Loader loader,
+ FT_Face face );
+
+
+ FT_LOCAL( void )
+ af_loader_done( AF_Loader loader );
+
+
+ FT_LOCAL( FT_Error )
+ af_loader_load_glyph( AF_Loader loader,
+ FT_Face face,
+ FT_UInt gindex,
+ FT_UInt32 load_flags );
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AF_LOADER_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/afmodule.c b/nx-X11/extras/freetype2/src/autofit/afmodule.c
new file mode 100644
index 000000000..e22ffffc6
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afmodule.c
@@ -0,0 +1,70 @@
+#include "afmodule.h"
+#include "afloader.h"
+#include FT_INTERNAL_OBJECTS_H
+
+ typedef struct FT_AutofitterRec_
+ {
+ FT_ModuleRec root;
+ AF_LoaderRec loader[1];
+
+ } FT_AutofitterRec, *FT_Autofitter;
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ af_autofitter_init( FT_Autofitter module )
+ {
+ return af_loader_init( module->loader, module->root.library->memory );
+ }
+
+
+ FT_CALLBACK_DEF( void )
+ af_autofitter_done( FT_Autofitter module )
+ {
+ af_loader_done( module->loader );
+ }
+
+
+ FT_CALLBACK_DEF( FT_Error )
+ af_autofitter_load_glyph( FT_Autofitter module,
+ FT_GlyphSlot slot,
+ FT_Size size,
+ FT_UInt glyph_index,
+ FT_Int32 load_flags )
+ {
+ FT_UNUSED( size );
+
+ return af_loader_load_glyph( module->loader, slot->face,
+ glyph_index, load_flags );
+ }
+
+
+
+ FT_CALLBACK_TABLE_DEF
+ const FT_AutoHinter_ServiceRec af_autofitter_service =
+ {
+ NULL,
+ NULL,
+ NULL,
+ (FT_AutoHinter_GlyphLoadFunc) af_autofitter_load_glyph
+ };
+
+
+ FT_CALLBACK_TABLE_DEF
+ const FT_Module_Class autofit_module_class =
+ {
+ FT_MODULE_HINTER,
+ sizeof ( FT_AutofitterRec ),
+
+ "autofitter",
+ 0x10000L, /* version 1.0 of the autofitter */
+ 0x20000L, /* requires FreeType 2.0 or above */
+
+ (const void*) &af_autofitter_service,
+
+ (FT_Module_Constructor) af_autofitter_init,
+ (FT_Module_Destructor) af_autofitter_done,
+ (FT_Module_Requester) 0
+ };
+
+
+/* END */
diff --git a/nx-X11/extras/freetype2/src/autofit/afmodule.h b/nx-X11/extras/freetype2/src/autofit/afmodule.h
new file mode 100644
index 000000000..b898cb375
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/afmodule.h
@@ -0,0 +1,16 @@
+#ifndef __AFMODULE_H__
+#define __AFMODULE_H__
+
+#include <ft2build.h>
+#include FT_MODULE_H
+
+
+FT_BEGIN_HEADER
+
+ FT_CALLBACK_TABLE
+ const FT_Module_Class autofit_module_class;
+
+
+FT_END_HEADER
+
+#endif /* __AFMODULE_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/aftypes.h b/nx-X11/extras/freetype2/src/autofit/aftypes.h
new file mode 100644
index 000000000..5d0371fcb
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/aftypes.h
@@ -0,0 +1,290 @@
+/***************************************************************************
+ *
+ * FreeType auto-fitter
+ *
+ * (c) 2004 David Turner
+ *
+ * The auto-fitter is a complete rewrite of the old auto-hinter.
+ * its main feature is the ability to differentiate between different
+ * scripts in order to apply language-specific rules.
+ *
+ * the code has also been compartimentized into several entities that
+ * should make algorithmic experimentation easier than with the old
+ * code.
+ *
+ * finally, we get rid of the Catharon license, since this code is
+ * released under the FreeType one.
+ */
+#ifndef __AFTYPES_H__
+#define __AFTYPES_H__
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_OUTLINE_H
+#include FT_INTERNAL_OBJECTS_H
+#include FT_INTERNAL_DEBUG_H
+
+FT_BEGIN_HEADER
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** D E B U G G I N G *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+#define xxAF_DEBUG
+
+#ifdef AF_DEBUG
+
+# include <stdio.h>
+# define AF_LOG( x ) printf x
+
+#else
+
+# define AF_LOG( x ) do ; while ( 0 ) /* nothing */
+
+#endif /* AF_DEBUG */
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** U T I L I T Y *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+ typedef struct AF_WidthRec_
+ {
+ FT_Pos org; /* original position/width in font units */
+ FT_Pos cur; /* current/scaled position/width in device sub-pixels */
+ FT_Pos fit; /* current/fitted position/width in device sub-pixels */
+
+ } AF_WidthRec, *AF_Width;
+
+
+ FT_LOCAL( void )
+ af_sort_pos( FT_UInt count,
+ FT_Pos* table );
+
+ FT_LOCAL( void )
+ af_sort_widths( FT_UInt count,
+ AF_Width widths );
+
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** A N G L E T Y P E S *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+ /*
+ * Angle type. The auto-fitter doesn't need a very high angular accuracy,
+ * and this allows us to speed up some computations considerably with a
+ * light Cordic algorithm (see afangles.c)
+ *
+ */
+
+ typedef FT_Int AF_Angle;
+
+#define AF_ANGLE_PI 256
+#define AF_ANGLE_2PI (AF_ANGLE_PI*2)
+#define AF_ANGLE_PI2 (AF_ANGLE_PI/2)
+#define AF_ANGLE_PI4 (AF_ANGLE_PI/4)
+
+ /*
+ * compute the angle of a given 2-D vector
+ *
+ */
+ FT_LOCAL( AF_Angle )
+ af_angle_atan( FT_Pos dx,
+ FT_Pos dy );
+
+
+ /*
+ * computes "angle2 - angle1", the result is always within
+ * the range [ -AF_ANGLE_PI .. AF_ANGLE_PI-1 ]
+ *
+ */
+ FT_LOCAL( AF_Angle )
+ af_angle_diff( AF_Angle angle1,
+ AF_Angle angle2 );
+
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** O U T L I N E S *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+ /* opaque handle to glyph-specific hints. see "afhints.h" for more
+ * details
+ */
+ typedef struct AF_GlyphHintsRec_* AF_GlyphHints;
+
+ /* this structure is used to model an input glyph outline to
+ * the auto-hinter. The latter will set the "hints" field
+ * depending on the glyph's script
+ */
+ typedef struct AF_OutlineRec_
+ {
+ FT_Face face;
+ FT_Outline outline;
+ FT_UInt outline_resolution;
+
+ FT_Int advance;
+ FT_UInt metrics_resolution;
+
+ AF_GlyphHints hints;
+
+ } AF_OutlineRec;
+
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** S C A L E R S *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+ /*
+ * A scaler models the target pixel device that will receive the
+ * auto-hinted glyph image
+ *
+ */
+
+ typedef enum
+ {
+ AF_SCALER_FLAG_NO_HORIZONTAL = 1, /* disable horizontal hinting */
+ AF_SCALER_FLAG_NO_VERTICAL = 2, /* disable vertical hinting */
+ AF_SCALER_FLAG_NO_ADVANCE = 4 /* disable advance hinting */
+
+ } AF_ScalerFlags;
+
+
+ typedef struct AF_ScalerRec_
+ {
+ FT_Face face; /* source font face */
+ FT_Fixed x_scale; /* from font units to 1/64th device pixels */
+ FT_Fixed y_scale; /* from font units to 1/64th device pixels */
+ FT_Pos x_delta; /* in 1/64th device pixels */
+ FT_Pos y_delta; /* in 1/64th device pixels */
+ FT_Render_Mode render_mode; /* monochrome, anti-aliased, LCD, etc.. */
+ FT_UInt32 flags; /* additionnal control flags, see above */
+
+ } AF_ScalerRec, *AF_Scaler;
+
+
+#define AF_SCALER_EQUAL_SCALES(a,b) \
+ ( (a)->x_scale == (b)->x_scale && \
+ (a)->y_scale == (b)->y_scale && \
+ (a)->x_delta == (b)->x_delta && \
+ (a)->y_delta == (b)->y_delta )
+
+
+ /**************************************************************************/
+ /**************************************************************************/
+ /***** *****/
+ /***** S C R I P T S *****/
+ /***** *****/
+ /**************************************************************************/
+ /**************************************************************************/
+
+ /*
+ * the list of know scripts. Each different script correspond to the
+ * following information:
+ *
+ * - a set of Unicode ranges to test weither the face supports the
+ * script
+ *
+ * - a specific global analyzer that will compute global metrics
+ * specific to the script.
+ *
+ * - a specific glyph analyzer that will compute segments and
+ * edges for each glyph covered by the script
+ *
+ * - a specific grid-fitting algorithm that will distort the
+ * scaled glyph outline according to the results of the glyph
+ * analyzer
+ *
+ * note that a given analyzer and/or grid-fitting algorithm can be
+ * used by more than one script
+ */
+ typedef enum
+ {
+ AF_SCRIPT_NONE = 0,
+ AF_SCRIPT_LATIN = 1,
+ /* add new scripts here. don't forget to update the list in "afglobal.c" */
+
+ AF_SCRIPT_MAX /* do not remove */
+
+ } AF_Script;
+
+
+
+ typedef struct AF_ScriptClassRec_ const* AF_ScriptClass;
+
+ typedef struct AF_ScriptMetricsRec_
+ {
+ AF_ScriptClass clazz;
+ AF_ScalerRec scaler;
+
+ } AF_ScriptMetricsRec, *AF_ScriptMetrics;
+
+
+ /* this function parses a FT_Face to compute global metrics for
+ * a specific script
+ */
+ typedef FT_Error (*AF_Script_InitMetricsFunc)( AF_ScriptMetrics metrics,
+ FT_Face face );
+
+ typedef void (*AF_Script_ScaleMetricsFunc)( AF_ScriptMetrics metrics,
+ AF_Scaler scaler );
+
+ typedef void (*AF_Script_DoneMetricsFunc)( AF_ScriptMetrics metrics );
+
+
+ typedef FT_Error (*AF_Script_InitHintsFunc)( AF_GlyphHints hints,
+ AF_ScriptMetrics metrics );
+
+ typedef void (*AF_Script_ApplyHintsFunc)( AF_GlyphHints hints,
+ FT_Outline* outline,
+ AF_ScriptMetrics metrics );
+
+
+ typedef struct AF_Script_UniRangeRec_
+ {
+ FT_UInt32 first;
+ FT_UInt32 last;
+
+ } AF_Script_UniRangeRec;
+
+ typedef const AF_Script_UniRangeRec * AF_Script_UniRange;
+
+ typedef struct AF_ScriptClassRec_
+ {
+ AF_Script script;
+ AF_Script_UniRange script_uni_ranges; /* last must be { 0, 0 } */
+
+ FT_UInt script_metrics_size;
+ AF_Script_InitMetricsFunc script_metrics_init;
+ AF_Script_ScaleMetricsFunc script_metrics_scale;
+ AF_Script_DoneMetricsFunc script_metrics_done;
+
+ AF_Script_InitHintsFunc script_hints_init;
+ AF_Script_ApplyHintsFunc script_hints_apply;
+
+ } AF_ScriptClassRec;
+
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFTYPES_H__ */
diff --git a/nx-X11/extras/freetype2/src/autofit/autofit.c b/nx-X11/extras/freetype2/src/autofit/autofit.c
new file mode 100644
index 000000000..c258e0d7a
--- /dev/null
+++ b/nx-X11/extras/freetype2/src/autofit/autofit.c
@@ -0,0 +1,9 @@
+#define FT_MAKE_OPTION_SINGLE_OBJECT
+#include <ft2build.h>
+#include "afangles.c"
+#include "afglobal.c"
+#include "afhints.c"
+#include "afdummy.c"
+#include "aflatin.c"
+#include "afloader.c"
+#include "afmodule.c"
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-17 01:46:04 +0000