Subversion Repositories display

/*
 * Copyright (C) 2007 Steve Ratcliffe
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License 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.
 *
 *
 * Author: Steve Ratcliffe
 * Create date: Dec 16, 2007
 */
package test.display;

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

import java.io.PrintStream;

/**
 * Print out the Polygon stacking order.  Not fully understood, may be the
 * other way round for example.
 *
 * @author Steve Ratcliffe
 */
public class StackingDisplayer {
        private final ImgFileReader reader;
        private final PrintStream outStream;

        public StackingDisplayer(ImgFileReader reader, PrintStream outStream) {
                this.reader = reader;
                this.outStream = outStream;
        }

        public void print() {
                Displayer d = new Displayer(reader);
                d.setTitle("Polygon stacking order");

                // Find the details of the section
                reader.position(0x51);
                long start = reader.get4();
                int itemsize = reader.get2u();
                int size = reader.get4();

                d = printOrder(start, itemsize, size);
                d.print(outStream);
        }

        private Displayer printOrder(long start, int itemsize, int size) {
                Displayer d = new Displayer(reader);
                d.setTitle("Polygon stacking order");

                reader.position(start);

                int level = 1;
                for (long pos = start; pos < start + size; pos += itemsize) {
                        DisplayItem item = d.item();

                        int type = reader.get1u();
                        item.setBytes1(type);

                        if (type == 0) {
                                item.addText("New level %d", ++level);
                        } else {
                                item.addText("Type %02x at level %d", type, level);
                        }

                        d.intValue("sub types");
                }
                return d;
        }
}