blame: source/code/ReadKeyboard.cpp

/*

===========================================================================

blockattack - Block Attack - Rise of the Blocks

Copyright (C) 2005-2012 Poul Sander

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 2 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/

Source information and contacts persons can be found at

http://blockattack.sf.net

===========================================================================

*/

#include "ReadKeyboard.h"

using namespace std;

ReadKeyboard::ReadKeyboard(void) {

	length = 0;

	maxLength = 16;

	position = 0;

	strcpy(textstring,"                             ");

}

ReadKeyboard::~ReadKeyboard(void) {

}

Uint8 ReadKeyboard::CharsBeforeCursor() {

	return position;

}

ReadKeyboard::ReadKeyboard(const char* oldName) {

	length = 0;

	maxLength = 16;

	position = 0;

	strcpy(textstring,"                             ");

	strncpy(textstring,oldName,strlen(oldName));

	char charecter = textstring[maxLength+1];

	int i = maxLength+1;

	while ((charecter == ' ') && (i>0)) {

		i--;

		charecter = textstring[i];

	}

	if (i>0) {

		length = i+1;

	}

	else if (charecter == ' ') {

		length = 0;

	}

	else {

		length = 1;

	}

	position = length;

}

void ReadKeyboard::putchar(char thing) {

	if (length < maxLength) {

		for (int i = 28; i>position; i--) {

			textstring[i]=textstring[i-1];

		}

		textstring[position] = thing;

		length++;

		position++;

	}

}

void ReadKeyboard::removeChar() {

	for (int i = position; i<28; i++) {

		textstring[i]=textstring[i+1];

	}

	textstring[28]=' ';

	if (length>0) {

		length--;

	}

}

bool ReadKeyboard::ReadKey(const SDL_keysym& key) {

	if ( 

			(key.unicode >= 'a' && key.unicode <= 'z') ||

			(key.unicode >= '0' && key.unicode <= '9') || 

			(key.unicode >= 'A' && key.unicode <= 'Z')) {

		ReadKeyboard::putchar(key.unicode);

		return true;

	}

	if (key.unicode == '.' || key.unicode == ',') {

		ReadKeyboard::putchar('.');

	}

	return ReadKey(key.sym);

}

bool ReadKeyboard::ReadKey(SDLKey keyPressed) {

	if (keyPressed == SDLK_SPACE) {

		ReadKeyboard::putchar(' ');

		return true;

	}

	if (keyPressed == SDLK_DELETE) {

		if ((length>0)&& (position<length)) {

			ReadKeyboard::removeChar();

		}

		return true;

	}

	if (keyPressed == SDLK_BACKSPACE) {

		if (position>0) {

			position--;

			ReadKeyboard::removeChar();

			return true;

		}

		return false;

	}

	if (keyPressed == SDLK_HOME) {

		position=0;

		return true;

	}

	if (keyPressed == SDLK_END) {

		position=length;

		return true;

	}

	if ((keyPressed == SDLK_LEFT) && (position>0)) {

		position--;

		return true;

	}

	if ((keyPressed == SDLK_RIGHT) && (position<length)) {

		position++;

		return true;

	}

	return true;

}

const char* ReadKeyboard::GetString() {

	textstring[29]='\0';

	return &textstring[0];

}