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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * text_reassemble.h from libTERE
+ *//*
+ * Authors: see below
+ *
+ *
+ * Copyright (C) 2017 Authors
+ * Released under GNU GPL v2.0+, read the file 'COPYING' for more information.
+ */
+/**
+ @file text_reassemble.h libTERE headers.
+
+See text_reassemble.c for notes
+
+File: text_reassemble.h
+Version: 0.0.13
+Date: 06-FEB-2014
+Author: David Mathog, Biology Division, Caltech
+email: mathog@caltech.edu
+Copyright: 2014 David Mathog and California Institute of Technology (Caltech)
+*/
+
+#ifndef _TEXT_REASSEMBLE_
+#define _TEXT_REASSEMBLE_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#include <stdlib.h> //NOLINT
+#include <stdio.h> //NOLINT
+#include <math.h> //NOLINT
+#include <stdint.h> //NOLINT
+#include <ctype.h> //NOLINT
+#include <fontconfig/fontconfig.h>
+#include <ft2build.h>
+#include <iconv.h>
+#include FT_FREETYPE_H
+#include FT_GLYPH_H
+
+/** \cond */
+#define TEREMIN(A,B) (A < B ? A : B)
+#define TEREMAX(A,B) (A > B ? A : B)
+
+#ifndef M_PI
+# define M_PI 3.14159265358979323846 /* pi */
+#endif
+#define ALLOCINFO_CHUNK 32
+#define ALLOCOUT_CHUNK 8192
+#define TRPRINT trinfo_append_out
+/** \endcond */
+
+/** \defgroup color background options
+ Text is underwritten with the background color not at all,
+ by reassembled line, or by full assembly .
+ @{
+*/
+#define BKCLR_NONE 0x00 /**< text is not underwritten with background color (default) */
+#define BKCLR_FRAG 0x01 /**< each fragment of text is underwritten with background color */
+#define BKCLR_LINE 0x02 /**< each line of text is underwritten with background color */
+#define BKCLR_ALL 0x03 /**< entire assembly is underwritten with background color */
+/** @} */
+
+/** \defgroup decoration options
+ One of these values may be present in the decoration field.
+ Unused bits may be used by end user code.
+ These values are SVG specific. Other applications could use the text
+ decoration field for a different set of bits, so long as it provided its own
+ output function.
+ @{
+*/
+#define TXTDECOR_NONE 0x000 /**< text is not decorated (default) */
+#define TXTDECOR_UNDER 0x001 /**< underlined */
+#define TXTDECOR_OVER 0x002 /**< overlined */
+#define TXTDECOR_BLINK 0x004 /**< blinking text */
+#define TXTDECOR_STRIKE 0x008 /**< strike through */
+#define TXTDECOR_TMASK 0x00F /**< Mask for selecting bits above */
+
+#define TXTDECOR_SOLID 0x000 /**< draw as single solid line */
+#define TXTDECOR_DOUBLE 0x010 /**< draw as double solid line */
+#define TXTDECOR_DOTTED 0x020 /**< draw as single dotted line */
+#define TXTDECOR_DASHED 0x040 /**< draw as single dashed line */
+#define TXTDECOR_WAVY 0x080 /**< draw as single wavy line */
+#define TXTDECOR_LMASK 0x0F0 /**< Mask for selecting these bits */
+
+#define TXTDECOR_CLRSET 0x100 /**< decoration has its own color */
+
+/** @} */
+
+
+
+
+
+/** \defgroup text alignment types
+ Location of text's {X,Y} coordinate on bounding rectangle.
+ Values are compatible with Fontconfig.
+ @{
+*/
+#define ALILEFT 0x01 /**< text object horizontal alignment = left */
+#define ALICENTER 0x02 /**< text object horizontal alignment = center */
+#define ALIRIGHT 0x04 /**< text object horizontal alignment = right */
+#define ALIHORI 0x07 /**< text object horizontal alignment mask */
+#define ALITOP 0x08 /**< text object vertical alignment = top */
+#define ALIBASE 0x10 /**< text object vertical alignment = baseline */
+#define ALIBOT 0x20 /**< text object vertical alignment = bottom */
+#define ALIVERT 0x38 /**< text object vertical alignment mask */
+/** @} */
+
+/** \defgroup language direction types
+ @{
+*/
+#define LDIR_LR 0x00 /**< left to right */
+#define LDIR_RL 0x01 /**< right to left */
+#define LDIR_TB 0x02 /**< top to bottom */
+/** @} */
+
+/** \defgroup special processing flags
+ @{
+*/
+#define TR_EMFBOT 0x01 /**< use an approximation compatible with EMF file's "BOTTOM" text orientation, which is not the "bottom" for Freetype fonts */
+/** @} */
+
+/** \enum tr_classes
+classification of complexes
+ @{
+*/
+enum tr_classes {
+ TR_TEXT, /**< simple text object */
+ TR_LINE, /**< linear assembly of TR_TEXTs */
+ TR_PARA_UJ, /**< sequential assembly of TR_LINEs and TR_TEXTs into a paragraph -
+ unknown justification properties */
+ TR_PARA_LJ, /**< ditto, left justified */
+ TR_PARA_CJ, /**< ditto, center justified */
+ TR_PARA_RJ /**< ditto, right justified */
+ };
+/** @} */
+
+/**
+ \brief alt font entries.
+*/
+typedef struct {
+ uint32_t fi_idx; /**< index into FT_INFO fonts, for fonts added for missing glyphs */
+ uint32_t weight; /**< integer weight for alt fonts, kept sorted into descending order */
+} ALT_SPECS;
+
+/**
+ \brief Information for a font instance.
+*/
+typedef struct {
+ FcFontSet *fontset; /**< all matching fonts (for fallback on missing glyphs) */
+ ALT_SPECS *alts; /**< index into FT_INFO fonts, for fonts added for missing glyphs */
+ uint32_t space; /**< alts storage slots allocated */
+ uint32_t used; /**< alts storage slots in use */
+ FT_Face face; /**< font face structures (FT_FACE is a pointer!) */
+ uint8_t *file; /**< pointer to font paths to files */
+ uint8_t *fontspec; /**< pointer to a font specification (name:italics, etc.) */
+ FcPattern *fpat; /**< current font, must hang onto this or faces operations break */
+ double spcadv; /**< advance equal to a space, in points at font's face size */
+ double fsize; /**< font's face size in points */
+} FNT_SPECS;
+
+/**
+ \brief Information for all font instances.
+*/
+typedef struct {
+ FT_Library library; /**< Fontconfig handle */
+ FNT_SPECS *fonts; /**< Array of fontinfo structures */
+ uint32_t space; /**< storage slots allocated */
+ uint32_t used; /**< storage slots in use */
+} FT_INFO;
+
+typedef struct {
+ uint8_t Red; //!< Red color (0-255)
+ uint8_t Green; //!< Green color (0-255)
+ uint8_t Blue; //!< Blue color (0-255)
+ uint8_t Reserved; //!< Not used
+} TRCOLORREF;
+
+/**
+ \brief Information for a single text object
+*/
+typedef struct {
+ uint8_t *string; /**< UTF-8 text */
+ double ori; /**< Orientation, angle of characters with respect to baseline in degrees */
+ double fs; /**< font size of text */
+ double x; /**< x coordinate, relative to TR_INFO x,y, in points */
+ double y; /**< y coordinate, relative to TR_INFO x,y, in points */
+ double xkern; /**< x kern relative to preceding text chunk in complex (if any) */
+ double ykern; /**< y kern relative to preceding text chunk in complex (if any) */
+ double boff; /**< Y LL corner - boff finds baseline */
+ double vadvance; /**< Line spacing typically 1.25 or 1.2, only set on the first text
+ element in a complex */
+ TRCOLORREF color; /**< RGB */
+ int taln; /**< text alignment with respect to x,y */
+ int ldir; /**< language direction LDIR_* */
+ int italics; /**< italics, as in FontConfig */
+ int weight; /**< weight, as in FontConfig */
+ int condensed; /**< condensed, as in FontConfig */
+ int decoration; /**< text decorations, ignored during assembly, used during output */
+ int spaces; /**< count of spaces converted from wide kerning (1 or 2) */
+ TRCOLORREF decColor; /**< text decoration color, ignored during assembly, used during output */
+ int co; /**< condensed override, if set Font name included narrow */
+ int rt_tidx; /**< index of rectangle that contains it */
+ int fi_idx; /**< index of the font it uses */
+} TCHUNK_SPECS;
+
+/**
+ \brief Information for all text objects.
+ Coordinates here are INTERNAL, after offset/rotate using values in TR_INFO.
+*/
+typedef struct {
+ TCHUNK_SPECS *chunks; /**< text chunks */
+ uint32_t space; /**< storage slots allocated */
+ uint32_t used; /**< storage slots in use */
+} TP_INFO;
+
+/**
+ \brief Information for a single bounding rectangle.
+ Coordinates here are INTERNAL, after offset/rotate using values in TR_INFO.
+*/
+typedef struct {
+ double xll; /**< x rectangle lower left corner */
+ double yll; /**< y " */
+ double xur; /**< x upper right corner */
+ double yur; /**< y " */
+ double xbearing; /**< x bearing of the leftmost character */
+} BRECT_SPECS;
+
+/**
+ \brief Information for all bounding rectangles.
+*/
+typedef struct {
+ BRECT_SPECS *rects; /**< bounding rectangles */
+ uint32_t space; /**< storage slots allocated */
+ uint32_t used; /**< storage slots in use */
+} BR_INFO;
+
+/**
+ \brief List of all members of a single complex.
+*/
+typedef struct {
+ int *members; /**< array of immediate children (for TR_PARA_* these are indices
+ for TR_TEXT or TR_LINE complexes also in cxi. For TR_TEXT
+ and TR_LINE these are indices to the actual text in tpi.) */
+ uint32_t space; /**< storage slots allocated */
+ uint32_t used; /**< storage slots in use */
+} CHILD_SPECS;
+
+/**
+ \brief Information for a single complex.
+*/
+typedef struct {
+ int rt_cidx; /**< index of rectangle that contains all members */
+ enum tr_classes type; /**< classification of the complex */
+ CHILD_SPECS kids; /**< immediate child nodes of this complex, for type TR_TEXT the
+ idx refers to the tpi data. otherwise, cxi data */
+} CX_SPECS;
+
+/**
+ \brief Information for all complexes.
+*/
+typedef struct {
+ CX_SPECS *cx; /**< complexes */
+ uint32_t space; /**< storage slots allocated */
+ uint32_t used; /**< storage slots in use */
+ uint32_t phase1; /**< Number of complexes (lines + text fragments) entered in phase 1 */
+ uint32_t lines; /**< Number of lines in phase 1 */
+ uint32_t paras; /**< Number of complexes (paras) entered in phase 2 */
+} CX_INFO;
+
+/**
+ \brief Information for the entire text reassembly system.
+*/
+typedef struct {
+ FT_INFO *fti; /**< Font info storage */
+ TP_INFO *tpi; /**< Text Info/Position Info storage */
+ BR_INFO *bri; /**< Bounding Rectangle Info storage */
+ CX_INFO *cxi; /**< Complex Info storage */
+ uint8_t *out; /**< buffer to hold formatted output */
+ double qe; /**< quantization error in points. */
+ double esc; /**< escapement angle in DEGREES */
+ double x; /**< x coordinate of first text object, in points */
+ double y; /**< y coordinate of first text object, in points */
+ int dirty; /**< 1 if text records are loaded */
+ int use_kern; /**< 1 if kerning is used, 0 if not */
+ int load_flags; /**< FT_LOAD_NO_SCALE or FT_LOAD_TARGET_NORMAL */
+ int kern_mode; /**< FT_KERNING_DEFAULT, FT_KERNING_UNFITTED, or FT_KERNING_UNSCALED */
+ uint32_t outspace; /**< storage in output buffer allocated */
+ uint32_t outused; /**< storage in output buffer in use */
+ int usebk; /**< On output write the background color under the text */
+ TRCOLORREF bkcolor; /**< RGB background color */
+} TR_INFO;
+
+/* padding added to rectangles before overlap test */
+/**
+ \brief Information for one padding record. (Padding is added to bounding rectangles before overlap tests.)
+*/
+typedef struct {
+ double up; /**< to top */
+ double down; /**< to bottom */
+ double left; /**< to left */
+ double right; /**< to right */
+} RT_PAD;
+
+/** \cond */
+/*
+ iconv() has a funny cast on some older systems, on most recent ones
+ it is just char **. This tries to work around the issue. If you build this
+ on another funky system this code may need to be modified, or define ICONV_CAST
+ on the compile line(but it may be tricky).
+*/
+#ifdef SOL8
+#define ICONV_CAST (const char **)
+#endif //SOL8
+#if !defined(ICONV_CAST)
+#define ICONV_CAST (char **)
+#endif //ICONV_CAST
+/** \endcond */
+
+/* Prototypes */
+int TR_findcasesub(const char *string, const char *sub);
+char *TR_construct_fontspec(const TCHUNK_SPECS *tsp, const char *fontname);
+char *TR_reconstruct_fontspec(const char *fontspec, const char *fontname);
+int TR_find_alternate_font(FT_INFO *fti, FNT_SPECS **efsp, uint32_t wc);
+int TR_getadvance(FT_INFO *fti, FNT_SPECS *fsp, uint32_t wc, uint32_t pc, int load_flags, int kern_mode, int *ymin, int *ymax);
+int TR_getkern2(FNT_SPECS *fsp, uint32_t wc, uint32_t pc, int kern_mode);
+int TR_kern_gap(FNT_SPECS *fsp, TCHUNK_SPECS *tsp, TCHUNK_SPECS *ptsp, int kern_mode);
+void TR_rt_pad_set(RT_PAD *rt_pad, double up, double down, double left, double right);
+double TR_baseline(TR_INFO *tri, int src, double *AscMax, double *DscMax);
+int TR_check_set_vadvance(TR_INFO *tri, int src, int lines);
+int TR_layout_analyze(TR_INFO *tri);
+void TR_layout_2_svg(TR_INFO *tri);
+int TR_weight_FC_to_SVG(int weight);
+
+FT_INFO *ftinfo_init(void);
+int ftinfo_make_insertable(FT_INFO *fti);
+int ftinfo_insert(FT_INFO *fti, FNT_SPECS *fsp);
+FT_INFO *ftinfo_release(FT_INFO *fti);
+FT_INFO *ftinfo_clear(FT_INFO *fti);
+int ftinfo_find_loaded_by_spec(const FT_INFO *fti, const uint8_t *fname);
+int ftinfo_find_loaded_by_src(const FT_INFO *fti, const uint8_t *filename);
+int ftinfo_load_fontname(FT_INFO *fti, const char *fontspec);
+void ftinfo_dump(const FT_INFO *fti);
+
+int fsp_alts_make_insertable(FNT_SPECS *fsp);
+int fsp_alts_insert(FNT_SPECS *fsp, uint32_t fi_idx);
+int fsp_alts_weight(FNT_SPECS *fsp, uint32_t a_idx);
+
+int csp_make_insertable(CHILD_SPECS *csp);
+int csp_insert(CHILD_SPECS *csp, int src);
+int csp_merge(CHILD_SPECS *dst, CHILD_SPECS *src);
+void csp_release(CHILD_SPECS *csp);
+void csp_clear(CHILD_SPECS *csp);
+
+CX_INFO *cxinfo_init(void);
+int cxinfo_make_insertable(CX_INFO *cxi);
+int cxinfo_insert(CX_INFO *cxi, int src, int src_rt_idx, enum tr_classes type);
+int cxinfo_append(CX_INFO *cxi, int src, enum tr_classes type);
+int cxinfo_merge(CX_INFO *cxi, int dst, int src, enum tr_classes type);
+int cxinfo_trim(CX_INFO *cxi);
+CX_INFO *cxinfo_release(CX_INFO *cxi);
+void cxinfo_dump(const TR_INFO *tri);
+
+TP_INFO *tpinfo_init(void);
+int tpinfo_make_insertable(TP_INFO *tpi);
+int tpinfo_insert(TP_INFO *tpi, const TCHUNK_SPECS *tsp);
+TP_INFO *tpinfo_release(TP_INFO *tpi);
+
+BR_INFO *brinfo_init(void);
+int brinfo_make_insertable(BR_INFO *bri);
+int brinfo_insert(BR_INFO *bri, const BRECT_SPECS *element);
+int brinfo_merge(BR_INFO *bri, int dst, int src);
+enum tr_classes
+ brinfo_pp_alignment(const BR_INFO *bri, int dst, int src, double slop, enum tr_classes type);
+int brinfo_overlap(const BR_INFO *bri, int dst, int src, RT_PAD *rp_dst, RT_PAD *rp_src);
+BR_INFO *brinfo_release(BR_INFO *bri);
+
+TR_INFO *trinfo_init(TR_INFO *tri);
+TR_INFO *trinfo_release(TR_INFO *tri);
+TR_INFO *trinfo_release_except_FC(TR_INFO *tri);
+TR_INFO *trinfo_clear(TR_INFO *tri);
+int trinfo_load_qe(TR_INFO *tri, double qe);
+int trinfo_load_bk(TR_INFO *tri, int usebk, TRCOLORREF bkcolor);
+int trinfo_load_ft_opts(TR_INFO *tri, int use_kern, int load_flags, int kern_mode);
+int trinfo_load_textrec(TR_INFO *tri, const TCHUNK_SPECS *tsp, double escapement, int flags);
+int trinfo_check_bk(TR_INFO *tri, int usebk, TRCOLORREF bkcolor);
+int trinfo_append_out(TR_INFO *tri, const char *src);
+
+int is_mn_unicode(int test);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _TEXT_REASSEMBLE_ */
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