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/*
* TSM - Main internal header
*
* Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef TSM_LIBTSM_INT_H
#define TSM_LIBTSM_INT_H
#include <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
#include "libtsm.h"
#include "shl-llog.h"
#define SHL_EXPORT __attribute__((visibility("default")))
/* max combined-symbol length */
#define TSM_UCS4_MAXLEN 10
/* symbols */
struct tsm_symbol_table;
extern const tsm_symbol_t tsm_symbol_default;
int tsm_symbol_table_new(struct tsm_symbol_table **out);
void tsm_symbol_table_ref(struct tsm_symbol_table *tbl);
void tsm_symbol_table_unref(struct tsm_symbol_table *tbl);
tsm_symbol_t tsm_symbol_make(uint32_t ucs4);
tsm_symbol_t tsm_symbol_append(struct tsm_symbol_table *tbl,
tsm_symbol_t sym, uint32_t ucs4);
const uint32_t *tsm_symbol_get(struct tsm_symbol_table *tbl,
tsm_symbol_t *sym, size_t *size);
unsigned int tsm_symbol_get_width(struct tsm_symbol_table *tbl,
tsm_symbol_t sym);
/* utf8 state machine */
struct tsm_utf8_mach;
enum tsm_utf8_mach_state {
TSM_UTF8_START,
TSM_UTF8_ACCEPT,
TSM_UTF8_REJECT,
TSM_UTF8_EXPECT1,
TSM_UTF8_EXPECT2,
TSM_UTF8_EXPECT3,
};
int tsm_utf8_mach_new(struct tsm_utf8_mach **out);
void tsm_utf8_mach_free(struct tsm_utf8_mach *mach);
int tsm_utf8_mach_feed(struct tsm_utf8_mach *mach, char c);
uint32_t tsm_utf8_mach_get(struct tsm_utf8_mach *mach);
void tsm_utf8_mach_reset(struct tsm_utf8_mach *mach);
/* TSM screen */
struct cell {
tsm_symbol_t ch; /* stored character */
unsigned int width; /* character width */
struct tsm_screen_attr attr; /* cell attributes */
tsm_age_t age; /* age of the single cell */
};
struct line {
struct line *next; /* next line (NULL if not sb) */
struct line *prev; /* prev line (NULL if not sb) */
unsigned int size; /* real width */
struct cell *cells; /* actuall cells */
uint64_t sb_id; /* sb ID */
tsm_age_t age; /* age of the whole line */
};
#define SELECTION_TOP -1
struct selection_pos {
struct line *line;
unsigned int x;
int y;
};
struct tsm_screen {
size_t ref;
llog_submit_t llog;
void *llog_data;
unsigned int opts;
unsigned int flags;
struct tsm_symbol_table *sym_table;
/* default attributes for new cells */
struct tsm_screen_attr def_attr;
/* ageing */
tsm_age_t age_cnt; /* current age counter */
unsigned int age_reset : 1; /* age-overflow flag */
/* current buffer */
unsigned int size_x; /* width of screen */
unsigned int size_y; /* height of screen */
unsigned int margin_top; /* top-margin index */
unsigned int margin_bottom; /* bottom-margin index */
unsigned int line_num; /* real number of allocated lines */
struct line **lines; /* active lines; copy of main/alt */
struct line **main_lines; /* real main lines */
struct line **alt_lines; /* real alternative lines */
tsm_age_t age; /* whole screen age */
/* scroll-back buffer */
unsigned int sb_count; /* number of lines in sb */
struct line *sb_first; /* first line; was moved first */
struct line *sb_last; /* last line; was moved last*/
unsigned int sb_max; /* max-limit of lines in sb */
struct line *sb_pos; /* current position in sb or NULL */
uint64_t sb_last_id; /* last id given to sb-line */
/* cursor: positions are always in-bound, but cursor_x might be
* bigger than size_x if new-line is pending */
unsigned int cursor_x; /* current cursor x-pos */
unsigned int cursor_y; /* current cursor y-pos */
/* tab ruler */
bool *tab_ruler; /* tab-flag for all cells of one row */
/* selection */
bool sel_active;
struct selection_pos sel_start;
struct selection_pos sel_end;
};
void screen_cell_init(struct tsm_screen *con, struct cell *cell);
void tsm_screen_set_opts(struct tsm_screen *scr, unsigned int opts);
void tsm_screen_reset_opts(struct tsm_screen *scr, unsigned int opts);
unsigned int tsm_screen_get_opts(struct tsm_screen *scr);
static inline void screen_inc_age(struct tsm_screen *con)
{
if (!++con->age_cnt) {
con->age_reset = 1;
++con->age_cnt;
}
}
/* available character sets */
typedef tsm_symbol_t tsm_vte_charset[96];
extern tsm_vte_charset tsm_vte_unicode_lower;
extern tsm_vte_charset tsm_vte_unicode_upper;
extern tsm_vte_charset tsm_vte_dec_supplemental_graphics;
extern tsm_vte_charset tsm_vte_dec_special_graphics;
#endif /* TSM_LIBTSM_INT_H */
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