TopWindow.java

/*
 * $Id: TopWindow.java 535 2008-02-19 06:02:50Z weiju $
 * 
 * Created on 2006/01/23
 * Copyright 2005-2008 by Wei-ju Wu
 * This file is part of The Z-machine Preservation Project (ZMPP).
 *
 * ZMPP 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.
 *
 * ZMPP 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 ZMPP.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.zmpp.swingui;

import java.awt.Font;

/**
 * This class implements the upper window of the standard Z-machine screen
 * model.
 *
 * @author Wei-ju Wu
 * @version 1.0
 */
public class TopWindow extends SubWindow {

    /**
     * Constructor.
     *
     * @param screen the screen model
     */
    public TopWindow(Viewport viewport) {

        super(viewport, "TOP");
    }

    /**
     * {@inheritDoc}
     */
    public void resetCursorToHome() {

        setCursorPosition(1, 1);
    }

    /**
     * {@inheritDoc}
     */
    public boolean isBuffered() {

        return false;
    }

    /**
     * {@inheritDoc}
     */
    public void setBufferMode(boolean flag) {
    }

    /**
     * {@inheritDoc}
     */
    public void setPagingEnabled(boolean flag) {
    }

    /**
     * {@inheritDoc}
     */
    public boolean isPagingEnabled() {
        return false;
    }

    /**
     * {@inheritDoc}
     */
    public void resetPager() {
    }

    /**
     * {@inheritDoc}
     */
    protected void sizeUpdated() {
    }

    /**
     * {@inheritDoc}
     */
    protected int getCurrentX() {

        int meanCharWidth = getCanvas().getCharWidth(getFont(), '0');
        return (getCursor().getColumn() - 1) * meanCharWidth;
    }

    /**
     * {@inheritDoc}
     */
    protected int getCurrentY() {

        Font font = getFont();
        Canvas canvas = getCanvas();
        return getTop() + (getCursor().getLine() - 1) * canvas.getFontHeight(font)
                + (canvas.getFontHeight(font) - canvas.getFontDescent(font));
    }

    /**
     * {@inheritDoc}
     */
    protected void scrollIfNeeded() {
    }

    /**
     * {@inheritDoc}
     */
    public void updateCursorCoordinates() {
        // empty
    }

    /**
     * {@inheritDoc}
     */
    public void printChar(char c, boolean isInput) {

        printString(String.valueOf(c));
    }
}