ifengine/joeyio.c

#include "joey.h"
#include "ansiterm.h"
#include "ztypes.h"


static int           _cursorIndex = 0;
static int           _cursorSize  = 9;
static unsigned int  _cursorTime  = 0;
static byte          _cursor[]    = { 32, 176, 177, 178, 219, 178, 177, 176, 32 };


void clear_line(void) {
	termPrint("\33[K");
}


void clear_screen(void) {
	termClearScreen();
	termMoveCursor(1, screen_rows);
	jlDisplayPresent();
}


void clear_status_window(void) {
	int i;
	int row;
	int col;
	get_cursor_position(&row, &col);
	for (i=status_size; i; i--) {
		move_cursor(i, 1);
		clear_line();
	}
	move_cursor(row, col);
}


void clear_text_window(void) {
	int i;
	int row;
	int col;
	get_cursor_position(&row, &col);
	for (i=status_size + 1; i<=screen_rows; i++) {
		move_cursor(i, 1);
		clear_line();
	}
	move_cursor(row, col);
}


void create_status_window(void) {
	printf("Create Status Window\n");
}


void delete_status_window(void) {
	printf("Delete Status Window\n");
}


void display_char(int c) {
	termPrintChar((char)c);
}


void get_cursor_position(int *row, int *col) {
	termGetCursor(col, row);
}


void initialize_screen(void) {
	// Handled in main
}


int input_character(int timeout) {
	char k = 0;
	(void)timeout;  // In 1/10ths of a second
	if (!jlKeyPressed()) {
		while (!jlKeyPressed() && !jlUtilMustExit()) {
			// Animate cursor
			if (_cursorTime != jlUtilTimer()) {
				display_char(_cursor[_cursorIndex++]);
				display_char(8);
				if (_cursorIndex >= _cursorSize) {
					_cursorIndex = 0;
				}
				_cursorTime = jlUtilTimer();
			}
		}
		display_char(32);
		display_char(8);
	}

	while (jlKeyPressed() && !jlUtilMustExit()) {
		// Wait for key to be released
	}
	k = jlKeyRead();

	if (jlUtilMustExit() && (interpreter_state == RUN)) {
		interpreter_state = STOP;
	}

	return (int)k;
}


int input_line(int buflen, char *buffer, int timeout, int *read_size) {
	int c = 0;
	int curr_char_pos = 0;
	(void)timeout;

	while (!jlUtilMustExit()) {
		c = input_character(0);
		if (c > 0) {
			if (c == 8) {
				// Backspace
				if (*read_size == 0) {
					//***TODO*** Flash border or ding or something
				} else {
					--*read_size;
					--curr_char_pos;
					display_char(8);
					display_char(32);
					display_char(8);
				}
			} else {
				// Normal Key
				if (*read_size == (buflen - 1)) {
					//***TODO*** Flash border or ding or something
				} else {
					if (c == 13) {
						scroll_line();
						return c;
					} else {
						buffer[curr_char_pos++] = (char)c;
						if (*read_size < curr_char_pos) {
							*read_size = curr_char_pos;
						}
						display_char(c);
					}
				}
			}
		}
	}

	return c;
}


void move_cursor(int row, int col) {
	termMoveCursor(col, row);
}


void reset_screen(void) {
	// Handled in main
}


void restart_screen(void) {
	// I don't think we need this.
}


void restore_cursor_position(void) {
	termRestoreCursor();
}


void save_cursor_position(void) {
	termSaveCursor();
}


void scroll_line(void) {
	//***TODO*** Should really not clobber the status window.
	termPrintChar(13);
	termPrintChar(10);
}


void select_status_window(void) {
	save_cursor_position();
}


void select_text_window(void) {
	restore_cursor_position();
}


void set_attribute(int attribute) {
	if (attribute == NORMAL) {
		termPrint("\33[0m");
	}
	if (attribute & REVERSE) {
		termPrint("\33[7m");
	}
}