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/*
Copyright (C) 2016 Alexander Borisov
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 the License, or (at your option) any later version.
This library 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 have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Author: lex.borisov@gmail.com (Alexander Borisov)
*/
#ifndef MyFONT_GLYF_H
#define MyFONT_GLYF_H
#pragma once
#include <myfont/myosi.h>
#ifdef __cplusplus
extern "C" {
#endif
enum myfont_table_glyf_composite_flags {
MyFONT_GLYF_ARG_1_AND_2_ARE_WORDS = 0x0001,
MyFONT_GLYF_ARGS_ARE_XY_VALUES = 0x0002,
MyFONT_GLYF_ROUND_XY_TO_GRID = 0x0004,
MyFONT_GLYF_WE_HAVE_A_SCALE = 0x0008,
MyFONT_GLYF_RESERVED = 0x0010,
MyFONT_GLYF_MORE_COMPONENTS = 0x0020,
MyFONT_GLYF_WE_HAVE_AN_X_AND_Y_SCALE = 0x0040,
MyFONT_GLYF_WE_HAVE_A_TWO_BY_TWO = 0x0080,
MyFONT_GLYF_WE_HAVE_INSTRUCTIONS = 0x0100,
MyFONT_GLYF_USE_MY_METRICS = 0x0200,
MyFONT_GLYF_OVERLAP_COMPOUND = 0x0400,
MyFONT_GLYF_SCALED_COMPONENT_OFFSET = 0x0800,
MyFONT_GLYF_UNSCALED_COMPONENT_OFFSET = 0x1000
};
struct myfont_table_composite_glyph {
uint16_t flags;
uint16_t glyphIndex;
int16_t argument1;
int16_t argument2;
}
typedef myfont_table_composite_glyph_t;
enum myfont_table_glyf_simple_flags {
MyFONT_GLYF_SML_FLAGS_onCurve = 0x001,
MyFONT_GLYF_SML_FLAGS_x_ShortVector = 0x002,
MyFONT_GLYF_SML_FLAGS_y_ShortVector = 0x004,
MyFONT_GLYF_SML_FLAGS_repeat = 0x008,
MyFONT_GLYF_SML_FLAGS_p_x_ShortVector = 0x010,
MyFONT_GLYF_SML_FLAGS_p_y_ShortVector = 0x020,
MyFONT_GLYF_SML_FLAGS_reserved_1 = 0x040,
MyFONT_GLYF_SML_FLAGS_reserved_2 = 0x080,
MyFONT_GLYF_SML_FLAGS_last = 0x100
};
struct myfont_table_simple_glyph {
uint16_t *endPtsOfContours;
uint16_t instructionLength;
uint8_t *instructions;
uint8_t *flags;
int16_t *xCoordinates;
int16_t *yCoordinates;
}
typedef myfont_table_simple_glyph_t;
struct myfont_table_glyf_head {
int16_t numberOfContours;
int16_t xMin;
int16_t yMin;
int16_t xMax;
int16_t yMax;
}
typedef myfont_table_glyf_head_t;
struct myfont_table_glyph {
myfont_table_glyf_head_t head;
myfont_table_simple_glyph_t simple;
uint16_t pointCount;
}
typedef myfont_table_glyph_t;
struct myfont_table_glyf {
myfont_table_glyph_t *cache;
}
typedef myfont_table_glyf_t;
#include <myfont/myfont.h>
struct myfont_font;
myfont_status_t myfont_load_table_glyf(struct myfont_font *mf);
myfont_status_t myfont_glyf_load(struct myfont_font *mf, myfont_table_glyph_t *glyph, uint16_t glyph_index);
myfont_status_t myfont_glyf_load_data(struct myfont_font *mf, myfont_table_glyph_t *glyph, uint32_t offset);
myfont_status_t myfont_glyf_load_simple(myfont_font_t *mf, myfont_table_glyph_t *glyph, uint8_t *data, uint32_t offset);
myfont_status_t myfont_glyf_load_simple_flags(struct myfont_font *mf, myfont_table_glyph_t *glyph, uint8_t *data, uint32_t offset);
myfont_status_t myfont_glyf_load_simple_coordinates(struct myfont_font *mf, myfont_table_glyph_t *glyph, uint8_t *data, uint32_t offset);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* MyFONT_GLYF_H */
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