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WIP - add extractor, generate snippet_data

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This commit is contained in:
Stefan Fejes
2019-08-20 15:52:05 +02:00
parent 88084d3d30
commit cc8f1d8a7a
37396 changed files with 4588842 additions and 133 deletions
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389
node_modules/sharp/vendor/include/graphite2/Font.h generated vendored Normal file
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/* GRAPHITE2 LICENSING
Copyright 2010, SIL International
All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should also have received a copy of the GNU Lesser General Public
License along with this library in the file named "LICENSE".
If not, write to the Free Software Foundation, 51 Franklin Street,
Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
internet at http://www.fsf.org/licenses/lgpl.html.
Alternatively, the contents of this file may be used under the terms
of the Mozilla Public License (http://mozilla.org/MPL) or the GNU
General Public License, as published by the Free Software Foundation,
either version 2 of the License or (at your option) any later version.
*/
#pragma once
#include "graphite2/Types.h"
#define GR2_VERSION_MAJOR 1
#define GR2_VERSION_MINOR 3
#define GR2_VERSION_BUGFIX 13
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct gr_face gr_face;
typedef struct gr_font gr_font;
typedef struct gr_feature_ref gr_feature_ref;
typedef struct gr_feature_val gr_feature_val;
/**
* Returns version information on this engine
*/
GR2_API void gr_engine_version(int *nMajor, int *nMinor, int *nBugFix);
/**
* The Face Options allow the application to require that certain tables are
* read during face construction. This may be of concern if the appFaceHandle
* used in the gr_get_table_fn may change.
* The values can be combined
*/
enum gr_face_options {
/** No preload, no cmap caching, fail if the graphite tables are invalid */
gr_face_default = 0,
/** Dumb rendering will be enabled if the graphite tables are invalid. @deprecated Since 1.311 */
gr_face_dumbRendering = 1,
/** preload glyphs at construction time */
gr_face_preloadGlyphs = 2,
/** Cache the lookup from code point to glyph ID at construction time */
gr_face_cacheCmap = 4,
/** Preload everything */
gr_face_preloadAll = gr_face_preloadGlyphs | gr_face_cacheCmap
};
/** Holds information about a particular Graphite silf table that has been loaded */
struct gr_faceinfo {
gr_uint16 extra_ascent; /**< The extra_ascent in the GDL, in design units */
gr_uint16 extra_descent; /**< The extra_descent in the GDL, in design units */
gr_uint16 upem; /**< The design units for the font */
enum gr_space_contextuals {
gr_space_unknown = 0, /**< no information is known. */
gr_space_none = 1, /**< the space character never occurs in any rules. */
gr_space_left_only = 2, /**< the space character only occurs as the first element in a rule. */
gr_space_right_only = 3, /**< the space character only occurs as the last element in a rule. */
gr_space_either_only = 4, /**< the space character only occurs as the only element in a rule. */
gr_space_both = 5, /**< the space character may occur as the first or last element of a rule. */
gr_space_cross = 6 /**< the space character occurs in a rule not as a first or last element. */
} space_contextuals;
unsigned int has_bidi_pass : 1; /**< the table specifies that a bidirectional pass should run */
unsigned int line_ends : 1; /**< there are line end contextuals somewhere */
unsigned int justifies : 1; /**< there are .justify properties set somewhere on some glyphs */
};
typedef struct gr_faceinfo gr_faceinfo;
/** type describing function to retrieve font table information
*
* @return a pointer to the table in memory. The pointed to memory must exist as
* long as the gr_face which makes the call.
* @param appFaceHandle is the unique information passed to gr_make_face()
* @param name is a 32bit tag to the table name.
* @param len returned by this function to say how long the table is in memory.
*/
typedef const void *(*gr_get_table_fn)(const void* appFaceHandle, unsigned int name, size_t *len);
/** type describing function to release any resources allocated by the above get_table table function
*
* @param appFaceHandle is the unique information passed to gr_make_face()
* @param pointer to table memory returned by get_table.
*/
typedef void (*gr_release_table_fn)(const void* appFaceHandle, const void *table_buffer);
/** struct housing function pointers to manage font table buffers for the graphite engine. */
struct gr_face_ops
{
/** size in bytes of this structure */
size_t size;
/** a pointer to a function to request a table from the client. */
gr_get_table_fn get_table;
/** is a pointer to a function to notify the client the a table can be released.
* This can be NULL to signify that the client does not wish to do any release handling. */
gr_release_table_fn release_table;
};
typedef struct gr_face_ops gr_face_ops;
/** Create a gr_face object given application information and a table functions.
*
* @return gr_face or NULL if the font fails to load for some reason.
* @param appFaceHandle This is application specific information that is passed
* to the getTable function. The appFaceHandle must stay
* alive as long as the gr_face is alive.
* @param face_ops Pointer to face specific callback structure for table
* management. Must stay alive for the duration of the
* call only.
* @param faceOptions Bitfield describing various options. See enum gr_face_options for details.
*/
GR2_API gr_face* gr_make_face_with_ops(const void* appFaceHandle/*non-NULL*/, const gr_face_ops *face_ops, unsigned int faceOptions);
/** @deprecated Since v1.2.0 in favour of gr_make_face_with_ops.
* Create a gr_face object given application information and a getTable function.
*
* @return gr_face or NULL if the font fails to load for some reason.
* @param appFaceHandle This is application specific information that is passed
* to the getTable function. The appFaceHandle must stay
* alive as long as the gr_face is alive.
* @param getTable Callback function to get table data.
* @param faceOptions Bitfield describing various options. See enum gr_face_options for details.
*/
GR2_DEPRECATED_API gr_face* gr_make_face(const void* appFaceHandle/*non-NULL*/, gr_get_table_fn getTable, unsigned int faceOptions);
/** @deprecated Since 1.3.7 this function is now an alias for gr_make_face_with_ops().
*
* Create a gr_face object given application information, with subsegmental caching support
*
* @return gr_face or NULL if the font fails to load.
* @param appFaceHandle is a pointer to application specific information that is passed to getTable.
* This may not be NULL and must stay alive as long as the gr_face is alive.
* @param face_ops Pointer to face specific callback structure for table management. Must stay
* alive for the duration of the call only.
* @param segCacheMaxSize Unused.
* @param faceOptions Bitfield of values from enum gr_face_options
*/
GR2_DEPRECATED_API gr_face* gr_make_face_with_seg_cache_and_ops(const void* appFaceHandle, const gr_face_ops *face_ops, unsigned int segCacheMaxSize, unsigned int faceOptions);
/** @deprecated Since 1.3.7 this function is now an alias for gr_make_face().
*
* Create a gr_face object given application information, with subsegmental caching support.
* This function is deprecated as of v1.2.0 in favour of gr_make_face_with_seg_cache_and_ops.
*
* @return gr_face or NULL if the font fails to load.
* @param appFaceHandle is a pointer to application specific information that is passed to getTable.
* This may not be NULL and must stay alive as long as the gr_face is alive.
* @param getTable The function graphite calls to access font table data
* @param segCacheMaxSize How large the segment cache is.
* @param faceOptions Bitfield of values from enum gr_face_options
*/
GR2_DEPRECATED_API gr_face* gr_make_face_with_seg_cache(const void* appFaceHandle, gr_get_table_fn getTable, unsigned int segCacheMaxSize, unsigned int faceOptions);
/** Convert a tag in a string into a gr_uint32
*
* @return gr_uint32 tag, zero padded
* @param str a nul terminated string of which at most the first 4 characters are read
*/
GR2_API gr_uint32 gr_str_to_tag(const char *str);
/** Convert a gr_uint32 tag into a string
*
* @param tag contains the tag to convert
* @param str is a pointer to a char array of at least size 4 bytes. The first 4 bytes of this array
* will be overwritten by this function. No nul is appended.
*/
GR2_API void gr_tag_to_str(gr_uint32 tag, char *str);
/** Get feature values for a given language or default
*
* @return a copy of the default feature values for a given language. The application must call
* gr_featureval_destroy() to free this object when done.
* @param pFace The font face to get feature values from
* @param langname The language tag to get feature values for. If there is no such language or
* langname is 0, the default feature values for the font are returned.
* langname is right 0 padded and assumes lowercase. Thus the en langauge
* would be 0x656E0000. Langname may also be space padded, thus 0x656E2020.
*/
GR2_API gr_feature_val* gr_face_featureval_for_lang(const gr_face* pFace, gr_uint32 langname);
/** Get feature reference for a given feature id from a face
*
* @return a feature reference corresponding to the given id. This data is part of the gr_face and
* will be freed when the face is destroyed.
* @param pFace Font face to get information on.
* @param featId Feature id tag to get reference to.
*/
GR2_API const gr_feature_ref* gr_face_find_fref(const gr_face* pFace, gr_uint32 featId);
/** Returns number of feature references in a face **/
GR2_API gr_uint16 gr_face_n_fref(const gr_face* pFace);
/** Returns feature reference at given index in face **/
GR2_API const gr_feature_ref* gr_face_fref(const gr_face* pFace, gr_uint16 i);
/** Return number of languages the face knows about **/
GR2_API unsigned short gr_face_n_languages(const gr_face* pFace);
/** Returns a language id corresponding to a language of given index in the face **/
GR2_API gr_uint32 gr_face_lang_by_index(const gr_face* pFace, gr_uint16 i);
/** Destroy the given face and free its memory **/
GR2_API void gr_face_destroy(gr_face *face);
/** Returns the number of glyphs in the face **/
GR2_API unsigned short gr_face_n_glyphs(const gr_face* pFace);
/** Returns a faceinfo for the face and script **/
GR2_API const gr_faceinfo *gr_face_info(const gr_face *pFace, gr_uint32 script);
/** Returns whether the font supports a given Unicode character
*
* @return true if the character is supported.
* @param pFace face to test within
* @param usv Unicode Scalar Value of character to test
* @param script Tag of script for selecting which set of pseudo glyphs to test. May be NULL.
*/
GR2_API int gr_face_is_char_supported(const gr_face *pFace, gr_uint32 usv, gr_uint32 script);
#ifndef GRAPHITE2_NFILEFACE
/** Create gr_face from a font file
*
* @return gr_face that accesses a font file directly. Returns NULL on failure.
* @param filename Full path and filename to font file
* @param faceOptions Bitfile from enum gr_face_options to control face options.
*/
GR2_API gr_face* gr_make_file_face(const char *filename, unsigned int faceOptions);
/** @deprecated Since 1.3.7. This function is now an alias for gr_make_file_face().
*
* Create gr_face from a font file, with subsegment caching support.
*
* @return gr_face that accesses a font file directly. Returns NULL on failure.
* @param filename Full path and filename to font file
* @param segCacheMaxSize Specifies how big to make the cache in segments.
* @param faceOptions Bitfield from enum gr_face_options to control face options.
*/
GR2_DEPRECATED_API gr_face* gr_make_file_face_with_seg_cache(const char *filename, unsigned int segCacheMaxSize, unsigned int faceOptions);
#endif // !GRAPHITE2_NFILEFACE
/** Create a font from a face
*
* @return gr_font Call font_destroy to free this font
* @param ppm Resolution of the font in pixels per em
* @param face Face this font corresponds to. This must stay alive as long as the font is alive.
*/
GR2_API gr_font* gr_make_font(float ppm, const gr_face *face);
/** query function to find the hinted advance of a glyph
*
* @param appFontHandle is the unique information passed to gr_make_font_with_advance()
* @param glyphid is the glyph to retireve the hinted advance for.
*/
typedef float (*gr_advance_fn)(const void* appFontHandle, gr_uint16 glyphid);
/** struct housing function pointers to manage font hinted metrics for the
* graphite engine. */
struct gr_font_ops
{
/** size of the structure in bytes to allow for future extensibility */
size_t size;
/** a pointer to a function to retrieve the hinted
* advance width of a glyph which the font cannot
* provide without client assistance. This can be
* NULL to signify no horizontal hinted metrics are necessary. */
gr_advance_fn glyph_advance_x;
/** a pointer to a function to retrieve the hinted
* advance height of a glyph which the font cannot
* provide without client assistance. This can be
* NULL to signify no horizontal hinted metrics are necessary. */
gr_advance_fn glyph_advance_y;
};
typedef struct gr_font_ops gr_font_ops;
/** Creates a font with hinted advance width query functions
*
* @return gr_font to be destroyed via font_destroy
* @param ppm size of font in pixels per em
* @param appFontHandle font specific information that must stay alive as long
* as the font does
* @param font_ops pointer font specific callback structure for hinted metrics.
* Need only stay alive for the duration of the call.
* @param face the face this font corresponds to. Must stay alive as long as
* the font does.
*/
GR2_API gr_font* gr_make_font_with_ops(float ppm, const void* appFontHandle, const gr_font_ops * font_ops, const gr_face *face);
/** Creates a font with hinted advance width query function.
* This function is deprecated. Use gr_make_font_with_ops instead.
*
* @return gr_font to be destroyed via font_destroy
* @param ppm size of font in pixels per em
* @param appFontHandle font specific information that must stay alive as long
* as the font does
* @param getAdvance callback function reference that returns horizontal advance in pixels for a glyph.
* @param face the face this font corresponds to. Must stay alive as long as
* the font does.
*/
GR2_API gr_font* gr_make_font_with_advance_fn(float ppm, const void* appFontHandle, gr_advance_fn getAdvance, const gr_face *face);
/** Free a font **/
GR2_API void gr_font_destroy(gr_font *font);
/** get a feature value
*
* @return value of specific feature or 0 if any problems.
* @param pfeatureref gr_feature_ref to the feature
* @param feats gr_feature_val containing all the values
*/
GR2_API gr_uint16 gr_fref_feature_value(const gr_feature_ref* pfeatureref, const gr_feature_val* feats);
/** set a feature value
*
* @return false if there were any problems (value out of range, etc.)
* @param pfeatureref gr_feature_ref to the feature
* @param val value to set the feature to
* @param pDest the gr_feature_val containing all the values for all the features
*/
GR2_API int gr_fref_set_feature_value(const gr_feature_ref* pfeatureref, gr_uint16 val, gr_feature_val* pDest);
/** Returns the id tag for a gr_feature_ref **/
GR2_API gr_uint32 gr_fref_id(const gr_feature_ref* pfeatureref);
/** Returns number of values a feature may take, given a gr_feature_ref **/
GR2_API gr_uint16 gr_fref_n_values(const gr_feature_ref* pfeatureref);
/** Returns the value associated with a particular value in a feature
*
* @return value
* @param pfeatureref gr_feature_ref of the feature of interest
* @param settingno Index up to the return value of gr_fref_n_values() of the value
*/
GR2_API gr_int16 gr_fref_value(const gr_feature_ref* pfeatureref, gr_uint16 settingno);
/** Returns a string of the UI name of a feature
*
* @return string of the UI name, in the encoding form requested. Call gr_label_destroy() after use.
* @param pfeatureref gr_feature_ref of the feature
* @param langId This is a pointer since the face may not support a string in the requested
* language. The actual language of the string is returned in langId
* @param utf Encoding form for the string
* @param length Used to return the length of the string returned in bytes.
*/
GR2_API void* gr_fref_label(const gr_feature_ref* pfeatureref, gr_uint16 *langId, enum gr_encform utf, gr_uint32 *length);
/** Return a UI string for a possible value of a feature
*
* @return string of the UI name, in the encoding form requested. nul terminated. Call gr_label_destroy()
* after use.
* @param pfeatureref gr_feature_ref of the feature
* @param settingno Value setting index
* @param langId This is a pointer to the requested language. The requested language id is
* replaced by the actual language id of the string returned.
* @param utf Encoding form for the string
* @param length Returns the length of the string returned in bytes.
*/
GR2_API void* gr_fref_value_label(const gr_feature_ref* pfeatureref, gr_uint16 settingno/*rather than a value*/, gr_uint16 *langId, enum gr_encform utf, gr_uint32 *length);
/** Destroy a previously returned label string **/
GR2_API void gr_label_destroy(void * label);
/** Copies a gr_feature_val **/
GR2_API gr_feature_val* gr_featureval_clone(const gr_feature_val* pfeatures);
/** Destroys a gr_feature_val **/
GR2_API void gr_featureval_destroy(gr_feature_val *pfeatures);
#ifdef __cplusplus
}
#endif

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node_modules/sharp/vendor/include/graphite2/Log.h generated vendored Normal file
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/* GRAPHITE2 LICENSING
Copyright 2010, SIL International
All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should also have received a copy of the GNU Lesser General Public
License along with this library in the file named "LICENSE".
If not, write to the Free Software Foundation, 51 Franklin Street,
Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
internet at http://www.fsf.org/licenses/lgpl.html.
Alternatively, the contents of this file may be used under the terms
of the Mozilla Public License (http://mozilla.org/MPL) or the GNU
General Public License, as published by the Free Software Foundation,
either version 2 of the License or (at your option) any later version.
*/
#pragma once
#include <graphite2/Types.h>
#include <graphite2/Font.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C"
{
#endif
/** deprecated mechanism that doesn't do anything now. */
typedef enum {
GRLOG_NONE = 0x0,
GRLOG_FACE = 0x01,
GRLOG_SEGMENT = 0x02,
GRLOG_PASS = 0x04,
GRLOG_CACHE = 0x08,
GRLOG_OPCODE = 0x80,
GRLOG_ALL = 0xFF
} GrLogMask;
/** Start logging all segment creation and updates on the provided face. This
* is logged to a JSON file, see "Segment JSON Schema.txt" for a precise
* definition of the file
*
* @return true if the file was successfully created and logging is correctly
* initialised.
* @param face the gr_face whose segments you want to log to the given file
* @param log_path a utf8 encoded file name and path to log to.
*/
GR2_API bool gr_start_logging(gr_face * face, const char *log_path);
/** Stop logging on the given face. This will close the log file created by
* gr_start_logging.
*
* @param face the gr_face whose segments you want to stop logging
*/
GR2_API void gr_stop_logging(gr_face * face);
/** Start logging to a FILE object.
* This function is deprecated as of 1.2.0, use the _face versions instead.
*
* @return True on success
* @param logfile FILE reference to output logging to
* @param mask What aspects of logging to report (ignored)
*/
GR2_API bool graphite_start_logging(FILE * logFile, GrLogMask mask); //may not do anthing if disabled in the implementation of the engine.
/** Stop logging to a FILE object.
* This function is deprecated as of 1.2.0, use the _face versions instead.
*/
GR2_API void graphite_stop_logging();
#ifdef __cplusplus
}
#endif

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node_modules/sharp/vendor/include/graphite2/Segment.h generated vendored Normal file
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/* GRAPHITE2 LICENSING
Copyright 2010, SIL International
All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should also have received a copy of the GNU Lesser General Public
License along with this library in the file named "LICENSE".
If not, write to the Free Software Foundation, 51 Franklin Street,
Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
internet at http://www.fsf.org/licenses/lgpl.html.
Alternatively, the contents of this file may be used under the terms
of the Mozilla Public License (http://mozilla.org/MPL) or the GNU
General Public License, as published by the Free Software Foundation,
either version 2 of the License or (at your option) any later version.
*/
#pragma once
#include "graphite2/Types.h"
#include "graphite2/Font.h"
#ifdef __cplusplus
extern "C"
{
#endif
enum gr_break_weight {
gr_breakNone = 0,
/* after break weights */
gr_breakWhitespace = 10,
gr_breakWord = 15,
gr_breakIntra = 20,
gr_breakLetter = 30,
gr_breakClip = 40,
/* before break weights */
gr_breakBeforeWhitespace = -10,
gr_breakBeforeWord = -15,
gr_breakBeforeIntra = -20,
gr_breakBeforeLetter = -30,
gr_breakBeforeClip = -40
};
enum gr_justFlags {
/// Indicates that this segment is a complete line
gr_justCompleteLine = 0,
/// Indicates that the start of the slot list is not at the start of a line
gr_justStartInline = 1,
/// Indicates that the end of the slot list is not at the end of a line
gr_justEndInline = 2
};
/** Used for looking up slot attributes. Most are already available in other functions **/
enum gr_attrCode {
/// adjusted glyph advance in x direction in design units
gr_slatAdvX = 0,
/// adjusted glyph advance in y direction (usually 0) in design units
gr_slatAdvY,
/// returns 0. Deprecated.
gr_slatAttTo,
/// This slot attaches to its parent at the given design units in the x direction
gr_slatAttX,
/// This slot attaches to its parent at the given design units in the y direction
gr_slatAttY,
/// This slot attaches to its parent at the given glyph point (not implemented)
gr_slatAttGpt,
/// x-direction adjustment from the given glyph point (not implemented)
gr_slatAttXOff,
/// y-direction adjustment from the given glyph point (not implemented)
gr_slatAttYOff,
/// Where on this glyph should align with the attachment point on the parent glyph in the x-direction.
gr_slatAttWithX,
/// Where on this glyph should align with the attachment point on the parent glyph in the y-direction
gr_slatAttWithY,
/// Which glyph point on this glyph should align with the attachment point on the parent glyph (not implemented).
gr_slatWithGpt,
/// Adjustment to gr_slatWithGpt in x-direction (not implemented)
gr_slatAttWithXOff,
/// Adjustment to gr_slatWithGpt in y-direction (not implemented)
gr_slatAttWithYOff,
/// Attach at given nesting level (not implemented)
gr_slatAttLevel,
/// Line break breakweight for this glyph
gr_slatBreak,
/// Ligature component reference (not implemented)
gr_slatCompRef,
/// bidi directionality of this glyph (not implemented)
gr_slatDir,
/// Whether insertion is allowed before this glyph
gr_slatInsert,
/// Final positioned position of this glyph relative to its parent in x-direction in pixels
gr_slatPosX,
/// Final positioned position of this glyph relative to its parent in y-direction in pixels
gr_slatPosY,
/// Amount to shift glyph by in x-direction design units
gr_slatShiftX,
/// Amount to shift glyph by in y-direction design units
gr_slatShiftY,
/// attribute user1
gr_slatUserDefnV1,
/// not implemented
gr_slatMeasureSol,
/// not implemented
gr_slatMeasureEol,
/// Amount this slot can stretch (not implemented)
gr_slatJStretch,
/// Amount this slot can shrink (not implemented)
gr_slatJShrink,
/// Granularity by which this slot can stretch or shrink (not implemented)
gr_slatJStep,
/// Justification weight for this glyph (not implemented)
gr_slatJWeight,
/// Amount this slot mush shrink or stretch in design units
gr_slatJWidth = 29,
/// SubSegment split point
gr_slatSegSplit = gr_slatJStretch + 29,
/// User defined attribute, see subattr for user attr number
gr_slatUserDefn,
/// Bidi level
gr_slatBidiLevel = 56,
/// Collision flags
gr_slatColFlags,
/// Collision constraint rectangle left (bl.x)
gr_slatColLimitblx,
/// Collision constraint rectangle lower (bl.y)
gr_slatColLimitbly,
/// Collision constraint rectangle right (tr.x)
gr_slatColLimittrx,
/// Collision constraint rectangle upper (tr.y)
gr_slatColLimittry,
/// Collision shift x
gr_slatColShiftx,
/// Collision shift y
gr_slatColShifty,
/// Collision margin
gr_slatColMargin,
/// Margin cost weight
gr_slatColMarginWt,
// Additional glyph that excludes movement near this one:
gr_slatColExclGlyph,
gr_slatColExclOffx,
gr_slatColExclOffy,
// Collision sequence enforcing attributes:
gr_slatSeqClass,
gr_slatSeqProxClass,
gr_slatSeqOrder,
gr_slatSeqAboveXoff,
gr_slatSeqAboveWt,
gr_slatSeqBelowXlim,
gr_slatSeqBelowWt,
gr_slatSeqValignHt,
gr_slatSeqValignWt,
/// not implemented
gr_slatMax,
/// not implemented
gr_slatNoEffect = gr_slatMax + 1
};
enum gr_bidirtl {
/// Underlying paragraph direction is RTL
gr_rtl = 1,
/// Set this to not run the bidi pass internally, even if the font asks for it.
/// This presumes that the segment is in a single direction. Most of the time
/// this bit should be set unless you know you are passing full paragraphs of text.
gr_nobidi = 2,
/// Disable auto mirroring for rtl text
gr_nomirror = 4
};
typedef struct gr_char_info gr_char_info;
typedef struct gr_segment gr_segment;
typedef struct gr_slot gr_slot;
/** Returns Unicode character for a charinfo.
*
* @param p Pointer to charinfo to return information on.
*/
GR2_API unsigned int gr_cinfo_unicode_char(const gr_char_info* p/*not NULL*/);
/** Returns breakweight for a charinfo.
*
* @return Breakweight is a number between -50 and 50 indicating the cost of a
* break before or after this character. If the value < 0, the absolute value
* is this character's contribution to the overall breakweight before it. If the value
* > 0, then the value is this character's contribution to the overall breakweight after it.
* The overall breakweight between two characters is the maximum of the breakweight
* contributions from the characters either side of it. If a character makes no
* contribution to the breakweight on one side of it, the contribution is considered
* to be 0.
* @param p Pointer to charinfo to return information on.
*/
GR2_API int gr_cinfo_break_weight(const gr_char_info* p/*not NULL*/);
/** Returns the slot index that after this character is after in the slot stream
*
* In effect each character is associated with a set of slots and this returns
* the index of the last slot in the segment this character is associated with.
*
* @return after slot index between 0 and gr_seg_n_slots()
* @param p Pointer to charinfo to return information on.
*/
GR2_API int gr_cinfo_after(const gr_char_info* p/*not NULL*/);
/** Returns the slot index that before this character is before in the slot stream
*
* In effect each character is associated with a set of slots and this returns
* the index of the first slot in the segment this character is associated with.
*
* @return before slot index between 0 and gr_seg_n_slots()
* @param p Pointer to charinfo to return information on.
*/
GR2_API int gr_cinfo_before(const gr_char_info* p/*not NULL*/);
/** Returns the code unit index of this character in the input string
*
* @return code unit index between 0 and the end of the string
* @param p Pointer to charinfo to return information on.
*/
GR2_API size_t gr_cinfo_base(const gr_char_info* p/*not NULL*/);
/** Returns the number of unicode characters in a string.
*
* @return number of characters in the string
* @param enc Specifies the type of data in the string: utf8, utf16, utf32
* @param buffer_begin The start of the string
* @param buffer_end Measure up to the first nul or when end is reached, whichever is earliest.
* This parameter may be NULL.
* @param pError If there is a structural fault in the string, the location is returned
* in this variable. If no error occurs, pError will contain NULL. NULL
* may be passed for pError if no such information is required.
*/
GR2_API size_t gr_count_unicode_characters(enum gr_encform enc, const void* buffer_begin, const void* buffer_end, const void** pError);
/** Creates and returns a segment.
*
* @return a segment that needs seg_destroy called on it. May return NULL if bad problems
* in segment processing.
* @param font Gives the size of the font in pixels per em for final positioning. If
* NULL, positions are returned in design units, i.e. at a ppm of the upem
* of the face.
* @param face The face containing all the non-size dependent information.
* @param script This is a tag containing a script identifier that is used to choose
* which graphite table within the font to use. Maybe 0. Tag may be 4 chars
* NULL padded in LSBs or space padded in LSBs.
* @param pFeats Pointer to a feature values to be used for the segment. Only one
* feature values may be used for a segment. If NULL the default features
* for the font will be used.
* @param enc Specifies what encoding form the string is in (utf8, utf16, utf32)
* @param pStart Start of the string
* @param nChars Number of unicode characters to process in the string. The string will
* be processed either up to the first NULL or until nChars have been
* processed. nChars is also used to initialise the internal memory
* allocations of the segment. So it is wise not to make nChars too much
* greater than the actual number of characters being processed.
* @param dir Specifies whether the segment is processed right to left (1) or left to
* right (0) and whether to run the internal bidi pass, if a font requests it.
* See enum gr_bidirtl for details.
*/
GR2_API gr_segment* gr_make_seg(const gr_font* font, const gr_face* face, gr_uint32 script, const gr_feature_val* pFeats, enum gr_encform enc, const void* pStart, size_t nChars, int dir);
/** Destroys a segment, freeing the memory.
*
* @param p The segment to destroy
*/
GR2_API void gr_seg_destroy(gr_segment* p);
/** Returns the advance for the whole segment.
*
* Returns the width of the segment up to the next glyph origin after the segment
*/
GR2_API float gr_seg_advance_X(const gr_segment* pSeg/*not NULL*/);
/** Returns the height advance for the segment. **/
GR2_API float gr_seg_advance_Y(const gr_segment* pSeg/*not NULL*/);
/** Returns the number of gr_char_infos in the segment. **/
GR2_API unsigned int gr_seg_n_cinfo(const gr_segment* pSeg/*not NULL*/);
/** Returns a gr_char_info at a given index in the segment. **/
GR2_API const gr_char_info* gr_seg_cinfo(const gr_segment* pSeg/*not NULL*/, unsigned int index/*must be <number_of_CharInfo*/);
/** Returns the number of glyph gr_slots in the segment. **/
GR2_API unsigned int gr_seg_n_slots(const gr_segment* pSeg/*not NULL*/); //one slot per glyph
/** Returns the first gr_slot in the segment.
*
* The first slot in a segment has a gr_slot_prev_in_segment() of NULL. Slots are owned
* by their segment and are destroyed along with the segment.
*/
GR2_API const gr_slot* gr_seg_first_slot(gr_segment* pSeg/*not NULL*/); //may give a base slot or a slot which is attached to another
/** Returns the last gr_slot in the segment.
*
* The last slot in a segment has a gr_slot_next_in_segment() of NULL
*/
GR2_API const gr_slot* gr_seg_last_slot(gr_segment* pSeg/*not NULL*/); //may give a base slot or a slot which is attached to another
/** Justifies a linked list of slots for a line to a given width
*
* Passed a pointer to the start of a linked list of slots corresponding to a line, as
* set up by gr_slot_linebreak_before, this function will position the glyphs in the line
* to take up the given width. It is possible to specify a subrange within the line to process.
* This allows skipping of line initial or final whitespace, for example. While this will ensure
* that the subrange fits width, the line will still be positioned with the first glyph of the
* line at 0. So the resulting positions may be beyond width.
*
* @return float The resulting width of the range of slots justified.
* @param pSeg Pointer to the segment
* @param pStart Pointer to the start of the line linked list (including skipped characters)
* @param pFont Font to use for positioning
* @param width Width in pixels in which to fit the line. If < 0. don't adjust natural width, just run justification passes
* to handle line end contextuals, if there are any.
* @param flags Indicates line ending types. Default is linked list is a full line
* @param pFirst If not NULL, the first slot in the list to be considered part of the line (so can skip)
* @param pLast If not NULL, the last slot to process in the line (allow say trailing whitespace to be skipped)
*/
GR2_API float gr_seg_justify(gr_segment* pSeg/*not NULL*/, const gr_slot* pStart/*not NULL*/, const gr_font *pFont, double width, enum gr_justFlags flags, const gr_slot* pFirst, const gr_slot* pLast);
/** Returns the next slot along in the segment.
*
* Slots are held in a linked list. This returns the next in the linked list. The slot
* may or may not be attached to another slot. Returns NULL at the end of the segment.
*/
GR2_API const gr_slot* gr_slot_next_in_segment(const gr_slot* p);
/** Returns the previous slot along in the segment.
*
* Slots are held in a doubly linked list. This returns the previos slot in the linked
* list. This slot may or may not be attached to it. Returns NULL at the start of the
* segment.
*/
GR2_API const gr_slot* gr_slot_prev_in_segment(const gr_slot* p);
/** Returns the attachment parent slot of this slot.
*
* Attached slots form a tree. This returns the parent of this slot in that tree. A
* base glyph which is not attached to another glyph, always returns NULL.
*/
GR2_API const gr_slot* gr_slot_attached_to(const gr_slot* p);
/** Returns the first slot attached to this slot.
*
* Attached slots form a singly linked list from the parent. This returns the first
* slot in that list. Note that this is a reference to another slot that is also in
* the main segment doubly linked list.
*
* if gr_slot_first_attachment(p) != NULL then gr_slot_attached_to(gr_slot_first_attachment(p)) == p.
*/
GR2_API const gr_slot* gr_slot_first_attachment(const gr_slot* p);
/** Returns the next slot attached to our attachment parent.
*
* This returns the next slot in the singly linked list of slots attached to this
* slot's parent. If there are no more such slots, NULL is returned. If there is
* no parent, i.e. the passed slot is a cluster base, then the next cluster base
* in graphical order (ltr, even for rtl text) is returned.
*
* if gr_slot_next_sibling_attachment(p) != NULL then gr_slot_attached_to(gr_slot_next_sibling_attachment(p)) == gr_slot_attached_to(p).
*/
GR2_API const gr_slot* gr_slot_next_sibling_attachment(const gr_slot* p);
/** Returns glyph id of the slot
*
* Each slot has a glyphid which is rendered at the position given by the slot. This
* glyphid is the real glyph to be rendered and never a pseudo glyph.
*/
GR2_API unsigned short gr_slot_gid(const gr_slot* p);
/** Returns X offset of glyph from start of segment **/
GR2_API float gr_slot_origin_X(const gr_slot* p);
/** Returns Y offset of glyph from start of segment **/
GR2_API float gr_slot_origin_Y(const gr_slot* p);
/** Returns the glyph advance for this glyph as adjusted for kerning
*
* @param p Slot to give results for
* @param face gr_face of the glyphs. May be NULL if unhinted advances used
* @param font gr_font to scale for pixel results. If NULL returns design
* units advance. If not NULL then returns pixel advance based
* on hinted or scaled glyph advances in the font. face must be
* passed for hinted advances to be used.
*/
GR2_API float gr_slot_advance_X(const gr_slot* p, const gr_face* face, const gr_font *font);
/** Returns the vertical advance for the glyph in the slot adjusted for kerning
*
* Returns design units unless font is not NULL in which case the pixel value
* is returned scaled for the given font
*/
GR2_API float gr_slot_advance_Y(const gr_slot* p, const gr_face* face, const gr_font *font);
/** Returns the gr_char_info index before us
*
* Returns the index of the gr_char_info that a cursor before this slot, would put
* an underlying cursor before. This may also be interpretted as each slot holding
* a set of char_infos that it is associated with and this function returning the
* index of the char_info with lowest index, from this set.
*/
GR2_API int gr_slot_before(const gr_slot* p/*not NULL*/);
/** Returns the gr_char_info index after us
*
* Returns the index of the gr_char_info that a cursor after this slot would put an
* underlying cursor after. This may also be interpretted as each slot holding a set
* of char_infos that it is associated with and this function returning the index of
* the char_info with the highest index, from this set.
*/
GR2_API int gr_slot_after(const gr_slot* p/*not NULL*/);
/** Returns the index of this slot in the segment
*
* Returns the index given to this slot during final positioning. This corresponds
* to the value returned br gr_cinfo_before() and gr_cinfo_after()
*/
GR2_API unsigned int gr_slot_index(const gr_slot* p/*not NULL*/);
/** Return a slot attribute value
*
* Given a slot and an attribute along with a possible subattribute, return the
* corresponding value in the slot. See enum gr_attrCode for details of each attribute.
*/
GR2_API int gr_slot_attr(const gr_slot* p/*not NULL*/, const gr_segment* pSeg/*not NULL*/, enum gr_attrCode index, gr_uint8 subindex); //tbd - do we need to expose this?
/** Returns whether text may be inserted before this glyph.
*
* This indicates whether a cursor can be put before this slot. It applies to
* base glyphs that have no parent as well as attached glyphs that have the
* .insert attribute explicitly set to true. This is the primary mechanism
* for identifying contiguous sequences of base plus diacritics.
*/
GR2_API int gr_slot_can_insert_before(const gr_slot* p);
/** Returns the original gr_char_info index this slot refers to.
*
* Each Slot has a gr_char_info that it originates from. This is that gr_char_info.
* The index is passed to gr_seg_cinfo(). This information is useful for testing.
*/
GR2_API int gr_slot_original(const gr_slot* p/*not NULL*/);
/** Breaks a segment into lines.
*
* Breaks the slot linked list at the given point in the linked list. It is up
* to the application to keep track of the first slot on each line.
*/
GR2_API void gr_slot_linebreak_before(gr_slot *p/*not NULL*/);
#ifdef __cplusplus
}
#endif

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node_modules/sharp/vendor/include/graphite2/Types.h generated vendored Normal file
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@ -0,0 +1,79 @@
/* GRAPHITE2 LICENSING
Copyright 2010, SIL International
All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should also have received a copy of the GNU Lesser General Public
License along with this library in the file named "LICENSE".
If not, write to the Free Software Foundation, 51 Franklin Street,
Suite 500, Boston, MA 02110-1335, USA or visit their web page on the
internet at http://www.fsf.org/licenses/lgpl.html.
Alternatively, the contents of this file may be used under the terms
of the Mozilla Public License (http://mozilla.org/MPL) or the GNU
General Public License, as published by the Free Software Foundation,
either version 2 of the License or (at your option) any later version.
*/
#pragma once
#include <stddef.h>
typedef unsigned char gr_uint8;
typedef gr_uint8 gr_byte;
typedef signed char gr_int8;
typedef unsigned short gr_uint16;
typedef short gr_int16;
typedef unsigned int gr_uint32;
typedef int gr_int32;
enum gr_encform {
gr_utf8 = 1/*sizeof(uint8)*/, gr_utf16 = 2/*sizeof(uint16)*/, gr_utf32 = 4/*sizeof(uint32)*/
};
// Define API function declspec/attributes and how each supported compiler or OS
// allows us to specify them.
#if defined __GNUC__
#define _gr2_and ,
#define _gr2_tag_fn(a) __attribute__((a))
#define _gr2_deprecated_flag deprecated
#define _gr2_export_flag visibility("default")
#define _gr2_import_flag visibility("default")
#define _gr2_static_flag visibility("hidden")
#endif
#if defined _WIN32 || defined __CYGWIN__
#if defined __GNUC__ // These three will be redefined for Windows
#undef _gr2_export_flag
#undef _gr2_import_flag
#undef _gr2_static_flag
#else // How MSVC sepcifies function level attributes adn deprecation
#define _gr2_and
#define _gr2_tag_fn(a) __declspec(a)
#define _gr2_deprecated_flag deprecated
#endif
#define _gr2_export_flag dllexport
#define _gr2_import_flag dllimport
#define _gr2_static_flag
#endif
#if defined GRAPHITE2_STATIC
#define GR2_API _gr2_tag_fn(_gr2_static_flag)
#define GR2_DEPRECATED_API _gr2_tag_fn(_gr2_deprecated_flag _gr2_and _gr2_static_flag)
#elif defined GRAPHITE2_EXPORTING
#define GR2_API _gr2_tag_fn(_gr2_export_flag)
#define GR2_DEPRECATED_API _gr2_tag_fn(_gr2_deprecated_flag _gr2_and _gr2_export_flag)
#else
#define GR2_API _gr2_tag_fn(_gr2_import_flag)
#define GR2_DEPRECATED_API _gr2_tag_fn(_gr2_deprecated_flag _gr2_and _gr2_import_flag)
#endif