pdfio/ttf.h
2023-10-06 16:44:20 -04:00

110 lines
3.2 KiB
C

//
// Header file for TTF library
//
// https://github.com/michaelrsweet/ttf
//
// Copyright © 2018-2023 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
#ifndef TTF_H
# define TTF_H
# include <stdbool.h>
# include <sys/types.h>
# ifdef __cplusplus
extern "C" {
# endif // __cplusplus
//
// Types...
//
typedef struct _ttf_s ttf_t; //// Font object
typedef void (*ttf_err_cb_t)(void *data, const char *message);
//// Font error callback
typedef enum ttf_stretch_e //// Font stretch
{
TTF_STRETCH_NORMAL, // normal
TTF_STRETCH_ULTRA_CONDENSED, // ultra-condensed
TTF_STRETCH_EXTRA_CONDENSED, // extra-condensed
TTF_STRETCH_CONDENSED, // condensed
TTF_STRETCH_SEMI_CONDENSED, // semi-condensed
TTF_STRETCH_SEMI_EXPANDED, // semi-expanded
TTF_STRETCH_EXPANDED, // expanded
TTF_STRETCH_EXTRA_EXPANDED, // extra-expanded
TTF_STRETCH_ULTRA_EXPANDED // ultra-expanded
} ttf_stretch_t;
typedef enum ttf_style_e //// Font style
{
TTF_STYLE_NORMAL, // Normal font
TTF_STYLE_ITALIC, // Italic font
TTF_STYLE_OBLIQUE // Oblique (angled) font
} ttf_style_t;
typedef enum ttf_variant_e //// Font variant
{
TTF_VARIANT_NORMAL, // Normal font
TTF_VARIANT_SMALL_CAPS // Font whose lowercase letters are small capitals
} ttf_variant_t;
typedef enum ttf_weight_e //// Font weight
{
TTF_WEIGHT_100 = 100, // Weight 100 (Thin)
TTF_WEIGHT_200 = 200, // Weight 200 (Extra/Ultra-Light)
TTF_WEIGHT_300 = 300, // Weight 300 (Light)
TTF_WEIGHT_400 = 400, // Weight 400 (Normal/Regular)
TTF_WEIGHT_500 = 500, // Weight 500 (Medium)
TTF_WEIGHT_600 = 600, // Weight 600 (Semi/Demi-Bold)
TTF_WEIGHT_700 = 700, // Weight 700 (Bold)
TTF_WEIGHT_800 = 800, // Weight 800 (Extra/Ultra-Bold)
TTF_WEIGHT_900 = 900 // Weight 900 (Black/Heavy)
} ttf_weight_t;
typedef struct ttf_rect_s //// Bounding rectangle
{
float left; // Left offset
float top; // Top offset
float right; // Right offset
float bottom; // Bottom offset
} ttf_rect_t;
//
// Functions...
//
extern ttf_t *ttfCreate(const char *filename, size_t idx, ttf_err_cb_t err_cb, void *err_data);
extern void ttfDelete(ttf_t *font);
extern int ttfGetAscent(ttf_t *font);
extern ttf_rect_t *ttfGetBounds(ttf_t *font, ttf_rect_t *bounds);
extern const int *ttfGetCMap(ttf_t *font, size_t *num_cmap);
extern int ttfGetCapHeight(ttf_t *font);
extern const char *ttfGetCopyright(ttf_t *font);
extern int ttfGetDescent(ttf_t *font);
extern ttf_rect_t *ttfGetExtents(ttf_t *font, float size, const char *s, ttf_rect_t *extents);
extern const char *ttfGetFamily(ttf_t *font);
extern float ttfGetItalicAngle(ttf_t *font);
extern int ttfGetMaxChar(ttf_t *font);
extern int ttfGetMinChar(ttf_t *font);
extern size_t ttfGetNumFonts(ttf_t *font);
extern const char *ttfGetPostScriptName(ttf_t *font);
extern ttf_stretch_t ttfGetStretch(ttf_t *font);
extern ttf_style_t ttfGetStyle(ttf_t *font);
extern const char *ttfGetVersion(ttf_t *font);
extern int ttfGetWidth(ttf_t *font, int ch);
extern ttf_weight_t ttfGetWeight(ttf_t *font);
extern int ttfGetXHeight(ttf_t *font);
extern bool ttfIsFixedPitch(ttf_t *font);
# ifdef __cplusplus
}
# endif // __cplusplus
#endif // !TTF_H