v4k-git-backup/engine/split/v4k_font.h

101 lines
3.5 KiB
C

// -----------------------------------------------------------------------------
// font framework
// - rlyeh, public domain
// font size tags
#define FONT_H1 "\1" // largest
#define FONT_H2 "\2"
#define FONT_H3 "\3"
#define FONT_H4 "\4"
#define FONT_H5 "\5"
#define FONT_H6 "\6" // smallest
// font color tags
#define FONT_COLOR1 "\x1a"
#define FONT_COLOR2 "\x1b"
#define FONT_COLOR3 "\x1c"
#define FONT_COLOR4 "\x1d"
#define FONT_COLOR5 "\x1e"
#define FONT_COLOR6 "\x1f"
// font face tags
#define FONT_FACE1 "\x10"
#define FONT_FACE2 "\x11"
#define FONT_FACE3 "\x12"
#define FONT_FACE4 "\x13"
#define FONT_FACE5 "\x14"
#define FONT_FACE6 "\x15"
#define FONT_FACE7 "\x16"
#define FONT_FACE8 "\x17" // editor may override this one
#define FONT_FACE9 "\x18" // editor may override this one
#define FONT_FACE10 "\x19" // editor may override this one
// font align tags
#define FONT_LEFT "\\<"
#define FONT_CENTER "\\|"
#define FONT_RIGHT "\\>"
#define FONT_TOP "\\^"
#define FONT_MIDDLE "\\-"
#define FONT_BASELINE "\\_"
#define FONT_BOTTOM "\\v"
// font flags
enum FONT_FLAGS {
// font atlas size
FONT_512 = 0x0,
FONT_1024 = 0x1,
FONT_2048 = 0x2,
FONT_4096 = 0x4,
// font oversampling
FONT_NO_OVERSAMPLE = 0x0,
FONT_OVERSAMPLE_X = 0x08,
FONT_OVERSAMPLE_Y = 0x10,
// unicode ranges
FONT_ASCII = 0x800, // Compatible charset
FONT_AR = 0x001000, // Arabic and Arabic-Indic digits
FONT_ZH = 0x002000, // Chinese Simplified (@todo: add ZH_FULL)
FONT_EL = 0x004000, // Greek, Coptic, modern Georgian, Svan, Mingrelian, Ancient Greek
FONT_EM = 0x008000, // Emoji
FONT_EU = 0x010000, // Eastern/western Europe, IPA, Latin ext A/B
FONT_HE = 0x020000, // Hebrew, Yiddish, Ladino, and other diaspora languages
FONT_JP = 0x040000, // Hiragana, Katakana, Punctuations, Half-width chars
FONT_KR = 0x080000, // Korean, Hangul
FONT_RU = 0x100000, // Cyrillic + ext A/B
FONT_TH = 0x200000, // Thai
FONT_VI = 0x400000, // Vietnamese
FONT_CJK = FONT_ZH|FONT_JP|FONT_KR,
// FONT_DEFAULTS = FONT_512 | FONT_NO_OVERSAMPLE | FONT_ASCII,
};
typedef struct font_metrics_t {
float ascent; // max distance above baseline for all glyphs
float descent; // max distance below baseline for all glyphs
float linegap; // distance betwen ascent of next line and descent of current line
float linedist; // distance between the baseline of two lines (ascent - descent + linegap)
} font_metrics_t;
// configures
API void font_face(const char *face_tag, const char *filename_ttf, float font_size, unsigned flags);
API void font_face_from_mem(const char *tag, const void *ttf_buffer, unsigned ttf_len, float font_size, unsigned flags);
API void font_scales(const char *face_tag, float h1, float h2, float h3, float h4, float h5, float h6);
API void font_color(const char *color_tag, uint32_t color);
// commands
API vec2 font_xy();
API void font_goto(float x, float y);
API vec2 font_print(const char *text);
API vec2 font_rect(const char *text);
API font_metrics_t font_metrics(const char *text);
// void font_clip(vec2 topleft, vec2 bottomright);
// void font_wrap(vec2 topleft, vec2 bottomright);
// syntax highlighting
API void* font_colorize(const char *text, const char *comma_types, const char *comma_keywords); // comma separated tokens. expensive, please cache result.
API vec2 font_highlight(const char *text, const void *colors);
// ui
API void ui_font();