--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libfreetype/src/autofit/aflatin.h Mon Apr 25 01:46:54 2011 +0200
@@ -0,0 +1,212 @@
+/***************************************************************************/
+/* */
+/* aflatin.h */
+/* */
+/* Auto-fitter hinting routines for latin script (specification). */
+/* */
+/* Copyright 2003-2007, 2009, 2011 by */
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */
+/* */
+/* This file is part of the FreeType project, and may only be used, */
+/* modified, and distributed under the terms of the FreeType project */
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
+/* this file you indicate that you have read the license and */
+/* understand and accept it fully. */
+/* */
+/***************************************************************************/
+
+
+#ifndef __AFLATIN_H__
+#define __AFLATIN_H__
+
+#include "afhints.h"
+
+
+FT_BEGIN_HEADER
+
+
+ /* the latin-specific script class */
+
+ AF_DECLARE_SCRIPT_CLASS(af_latin_script_class)
+
+
+ /* constants are given with units_per_em == 2048 in mind */
+#define AF_LATIN_CONSTANT( metrics, c ) \
+ ( ( (c) * (FT_Long)( (AF_LatinMetrics)(metrics) )->units_per_em ) / 2048 )
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** 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 have 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, /* set if zone height is <= 3/4px */
+ AF_LATIN_BLUE_TOP = 1 << 1, /* result of AF_LATIN_IS_TOP_BLUE */
+ 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; /* number of used widths */
+ AF_WidthRec widths[AF_LATIN_MAX_WIDTHS]; /* widths array */
+ FT_Pos edge_distance_threshold; /* used for creating edges */
+ FT_Pos standard_width; /* the default stem thickness */
+ FT_Bool extra_light; /* is standard width very light? */
+
+ /* 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 );
+
+ FT_LOCAL( void )
+ af_latin_metrics_init_widths( AF_LatinMetrics metrics,
+ FT_Face face,
+ FT_ULong charcode );
+
+ FT_LOCAL( void )
+ af_latin_metrics_check_digits( AF_LatinMetrics metrics,
+ FT_Face face );
+
+
+ /*************************************************************************/
+ /*************************************************************************/
+ /***** *****/
+ /***** 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( FT_Error )
+ 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( FT_Error )
+ af_latin_hints_compute_edges( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+ FT_LOCAL( FT_Error )
+ af_latin_hints_detect_features( AF_GlyphHints hints,
+ AF_Dimension dim );
+
+/* */
+
+FT_END_HEADER
+
+#endif /* __AFLATIN_H__ */
+
+
+/* END */