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/***************************************************************************
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screen.h - description
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-------------------
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copyright : (C) 2004-2025 by Leaflet
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email : leaflet@leafok.com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef _SCREEN_H_
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#define _SCREEN_H_
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#include <stddef.h>
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#define CTRL_SEQ_CLR_LINE "\033[K"
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#define MSG_EXT_MAX_LEN 200
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struct display_ctx_t
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{
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int reach_begin; // of data
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int reach_end; // of data
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long line_top; // current screen
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long line_bottom; // current screen
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char msg[MSG_EXT_MAX_LEN];
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};
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typedef struct display_ctx_t DISPLAY_CTX;
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typedef int (*display_data_key_handler)(int *p_key, DISPLAY_CTX *p_ctx);
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extern void moveto(int row, int col);
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extern void clrtoeol();
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extern void clrline(int line_begin, int line_end);
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extern void clrtobot(int line_begin);
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extern void clearscr();
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extern int press_any_key();
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extern void set_input_echo(int echo);
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extern int str_input(char *buffer, int buffer_length, int echo_mode);
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extern int get_data(int row, int col, char *prompt, char *buffer, int buffer_length, int echo_mode);
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// eof_exit = 0 : Do not exit at EOF
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// 1 : Prompt for any key at EOF, then exit
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// 2 : Exit at EOF without prompt
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extern int display_data(const void *p_data, long line_total, const long *p_line_offsets, int begin_line, int eof_exit,
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display_data_key_handler key_handler, const char *help_filename);
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extern int display_file(const char *filename, int begin_line, int eof_exit);
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extern int show_top(const char *str_left, const char *str_center, const char *str_right);
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extern int show_bottom(const char *msg);
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extern int show_active_board();
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#endif //_SCREEN_H_
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