/*
    PIP - Platform Independent Primitives
    Keyboard grabber for console
    Copyright (C) 2012  Ivan Pelipenko peri4ko@gmail.com

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "pikbdlistener.h"


bool PIKbdListener::exiting;

PIKbdListener::PIKbdListener(KBFunc slot, void * data_): PIThread() {
#ifdef WINDOWS
	hIn = GetStdHandle(STD_INPUT_HANDLE);
	GetConsoleMode(hIn, &smode);
#else
	struct termios term;
	tcgetattr(0, &term);
	sterm = term;
#endif
	is_active = true;
	ret_func = slot;
	data = data_;
	PIKbdListener::exiting = exit_enabled = false;
	start();
}


void PIKbdListener::begin() {
	//cout << "list begin" << endl;
#ifdef WINDOWS
	SetConsoleMode(hIn, ENABLE_PROCESSED_INPUT);
	GetConsoleMode(hIn, &tmode);
#else
	struct termios term;
	tcgetattr(0, &term);
	term.c_lflag &= ~(ECHO | ICANON) | NOFLSH;
	tterm = term;
	tcsetattr(0, TCSAFLUSH, &term);
#endif
}


void PIKbdListener::run() {
#ifdef WINDOWS
	ReadConsole(hIn, &rc, 1, &ret, 0);
#else
	ret = read(0, &rc, 1);
#endif
	if (exit_enabled && rc == exit_key) {
		PIKbdListener::exiting = true;
		return;
	}
	if (ret_func != 0 && ret > 0) ret_func(rc, data);
}


void PIKbdListener::end() {
	//cout << "list end" << endl;
#ifdef WINDOWS
	SetConsoleMode(hIn, smode);
#else
	tcsetattr(0, TCSANOW, &sterm);
#endif
}


void PIKbdListener::setActive(bool yes) {
	is_active = yes;
	if (is_active) {
#ifdef WINDOWS
		SetConsoleMode(hIn, tmode);
#else
		tcsetattr(0, TCSANOW, &tterm);
#endif
	} else {
#ifdef WINDOWS
		SetConsoleMode(hIn, smode);
#else
		tcsetattr(0, TCSANOW, &sterm);
#endif
	}
}