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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
systemd 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.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#pragma once
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include "util.h"
typedef struct term_color term_color;
typedef struct term_attr term_attr;
typedef struct term_utf8 term_utf8;
typedef struct term_seq term_seq;
typedef struct term_parser term_parser;
typedef struct term_screen term_screen;
/*
* Ageing
*/
typedef uint64_t term_age_t;
#define TERM_AGE_NULL 0
/*
* Attributes
*/
enum {
/* special color-codes */
TERM_CCODE_DEFAULT, /* default foreground/background color */
TERM_CCODE_256, /* 256color code */
TERM_CCODE_RGB, /* color is specified as RGB */
/* dark color-codes */
TERM_CCODE_BLACK,
TERM_CCODE_RED,
TERM_CCODE_GREEN,
TERM_CCODE_YELLOW,
TERM_CCODE_BLUE,
TERM_CCODE_MAGENTA,
TERM_CCODE_CYAN,
TERM_CCODE_WHITE, /* technically: light grey */
/* light color-codes */
TERM_CCODE_LIGHT_BLACK = TERM_CCODE_BLACK + 8, /* technically: dark grey */
TERM_CCODE_LIGHT_RED = TERM_CCODE_RED + 8,
TERM_CCODE_LIGHT_GREEN = TERM_CCODE_GREEN + 8,
TERM_CCODE_LIGHT_YELLOW = TERM_CCODE_YELLOW + 8,
TERM_CCODE_LIGHT_BLUE = TERM_CCODE_BLUE + 8,
TERM_CCODE_LIGHT_MAGENTA = TERM_CCODE_MAGENTA + 8,
TERM_CCODE_LIGHT_CYAN = TERM_CCODE_CYAN + 8,
TERM_CCODE_LIGHT_WHITE = TERM_CCODE_WHITE + 8,
TERM_CCODE_CNT,
};
struct term_color {
uint8_t ccode;
uint8_t c256;
uint8_t red;
uint8_t green;
uint8_t blue;
};
struct term_attr {
term_color fg; /* foreground color */
term_color bg; /* background color */
unsigned int bold : 1; /* bold font */
unsigned int italic : 1; /* italic font */
unsigned int underline : 1; /* underline text */
unsigned int inverse : 1; /* inverse fg/bg */
unsigned int protect : 1; /* protect from erase */
unsigned int blink : 1; /* blink text */
unsigned int hidden : 1; /* hidden */
};
void term_attr_to_argb32(const term_attr *attr, uint32_t *fg, uint32_t *bg, const uint8_t *palette);
/*
* UTF-8
*/
struct term_utf8 {
uint32_t chars[5];
uint32_t ucs4;
unsigned int i_bytes : 3;
unsigned int n_bytes : 3;
unsigned int valid : 1;
};
size_t term_utf8_encode(char *out_utf8, uint32_t g);
size_t term_utf8_decode(term_utf8 *p, uint32_t **out_buf, char c);
/*
* Parsers
*/
int term_parser_new(term_parser **out, bool host);
term_parser *term_parser_free(term_parser *parser);
int term_parser_feed(term_parser *parser, const term_seq **seq_out, uint32_t raw);
#define _term_parser_free_ _cleanup_(term_parser_freep)
DEFINE_TRIVIAL_CLEANUP_FUNC(term_parser*, term_parser_free);
/*
* Screens
*/
enum {
TERM_KBDMOD_IDX_SHIFT,
TERM_KBDMOD_IDX_CTRL,
TERM_KBDMOD_IDX_ALT,
TERM_KBDMOD_IDX_LINUX,
TERM_KBDMOD_IDX_CAPS,
TERM_KBDMOD_CNT,
TERM_KBDMOD_SHIFT = 1 << TERM_KBDMOD_IDX_SHIFT,
TERM_KBDMOD_CTRL = 1 << TERM_KBDMOD_IDX_CTRL,
TERM_KBDMOD_ALT = 1 << TERM_KBDMOD_IDX_ALT,
TERM_KBDMOD_LINUX = 1 << TERM_KBDMOD_IDX_LINUX,
TERM_KBDMOD_CAPS = 1 << TERM_KBDMOD_IDX_CAPS,
};
typedef int (*term_screen_write_fn) (term_screen *screen, void *userdata, const void *buf, size_t size);
typedef int (*term_screen_cmd_fn) (term_screen *screen, void *userdata, unsigned int cmd, const term_seq *seq);
int term_screen_new(term_screen **out, term_screen_write_fn write_fn, void *write_fn_data, term_screen_cmd_fn cmd_fn, void *cmd_fn_data);
term_screen *term_screen_ref(term_screen *screen);
term_screen *term_screen_unref(term_screen *screen);
DEFINE_TRIVIAL_CLEANUP_FUNC(term_screen*, term_screen_unref);
unsigned int term_screen_get_width(term_screen *screen);
unsigned int term_screen_get_height(term_screen *screen);
uint64_t term_screen_get_age(term_screen *screen);
int term_screen_feed_text(term_screen *screen, const uint8_t *in, size_t size);
int term_screen_feed_keyboard(term_screen *screen,
const uint32_t *keysyms,
size_t n_syms,
uint32_t ascii,
const uint32_t *ucs4,
unsigned int mods);
int term_screen_resize(term_screen *screen, unsigned int width, unsigned int height);
void term_screen_soft_reset(term_screen *screen);
void term_screen_hard_reset(term_screen *screen);
int term_screen_set_answerback(term_screen *screen, const char *answerback);
int term_screen_draw(term_screen *screen,
int (*draw_fn) (term_screen *screen,
void *userdata,
unsigned int x,
unsigned int y,
const term_attr *attr,
const uint32_t *ch,
size_t n_ch,
unsigned int ch_width),
void *userdata,
uint64_t *fb_age);
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