Subversion Repositories mkgmap

/*
 * Copyright (C) 2011.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 or
 * version 2 as published by the Free Software Foundation.
 *
 * 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.
 */
package uk.me.parabola.imgfmt.app.typ;

import java.nio.charset.CharsetEncoder;
import java.util.ArrayList;
import java.util.List;

import uk.me.parabola.imgfmt.app.ImgFileWriter;

/**
 * The new multiple icon format.
 * There can be several icons at different resolutions.
 *
 * @author Steve Ratcliffe
 */
public class TypIconSet extends TypElement {
        private final List<Xpm> icons = new ArrayList<Xpm>();

        public void write(ImgFileWriter writer, CharsetEncoder encoder) {
                offset = writer.position();

                // Start with the number of icons
                writer.put((byte) icons.size());

                for (Xpm xpm : icons) {
                        ColourInfo colourInfo = xpm.getColourInfo();
                        int nbits = calcBits(colourInfo);
                        writer.putChar((char) (nbits/2));
                        writer.put((byte) 1);
                        writer.put((byte) colourInfo.getWidth());
                        writer.put((byte) colourInfo.getHeight());
                        writeImage(writer, xpm);
                }
        }

        private int calcBits(ColourInfo colourInfo) {
                int bits = 0;
                int bpp = colourInfo.getBitsPerPixel();

                bits += colourInfo.getWidth() * colourInfo.getHeight() * bpp;
                bits += colourInfo.getNumberOfSColoursForCM() * 3 * 8;
                if (colourInfo.getNumberOfColours() == 0 && colourInfo.getColourMode() == 0x10)
                        bits += 3*8;
                bits += 0x2c;
                return bits;
        }

        public void addIcon(Xpm xpm) {
                icons.add(xpm);
        }

        public String getLabel() {
                if (labels.isEmpty())
                        return null;
                return labels.get(0).getText();
        }

        /**
         * Icon sets can have full colour pixmaps.
         */
        public boolean simpleBitmap() {
                return false;
        }
}