102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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* Copyright (c) 2013, 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* terminal.h
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* Terminal handling.
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*/
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#ifndef EDITOR_TERMINAL_H
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#define EDITOR_TERMINAL_H
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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struct terminal_datum
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{
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wchar_t character;
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uint8_t vgacolor;
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};
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__attribute__((unused))
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static inline
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struct terminal_datum make_terminal_datum(wchar_t c, uint8_t cl)
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{
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struct terminal_datum result = { c, cl };
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return result;
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}
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struct terminal_state
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{
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int width;
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int height;
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int cursor_x;
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int cursor_y;
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uint8_t color;
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struct terminal_datum* data;
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};
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__attribute__((unused))
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static inline
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bool is_row_column_lt(size_t ra, size_t ca, size_t rb, size_t cb)
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{
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return ra < rb || (ra == rb && ca < cb);
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}
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__attribute__((unused))
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static inline
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bool is_row_column_le(size_t ra, size_t ca, size_t rb, size_t cb)
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{
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return (ra == rb && ca == cb) || is_row_column_lt(ra, ca, rb, cb);
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}
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__attribute__((unused))
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static inline
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void row_column_smallest(size_t ra, size_t ca, size_t rb, size_t cb,
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size_t* row, size_t* column)
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{
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if ( is_row_column_lt(ra, ca, rb, cb) )
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*row = ra, *column = ca;
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else
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*row = rb, *column = cb;
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}
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__attribute__((unused))
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static inline
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void row_column_biggest(size_t ra, size_t ca, size_t rb, size_t cb,
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size_t* row, size_t* column)
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{
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if ( is_row_column_lt(ra, ca, rb, cb) )
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*row = rb, *column = cb;
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else
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*row = ra, *column = ca;
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}
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void update_terminal_color(FILE* fp, uint8_t desired_color,
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struct terminal_state* current);
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void update_terminal_cursor(FILE* fp, int x, int y,
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struct terminal_state* current);
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void update_terminal_entry(FILE* fp, struct terminal_datum entry, int x, int y,
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struct terminal_state* current);
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void update_terminal(FILE* fp,
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struct terminal_state* desired,
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struct terminal_state* current);
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void make_terminal_state(FILE* fp, struct terminal_state* state);
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void free_terminal_state(struct terminal_state* state);
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void reset_terminal_state(FILE* fp, struct terminal_state* state);
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#endif
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