com.itextpdf.text.pdf.qrcode.ByteMatrix.java Source code

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Here is the source code for com.itextpdf.text.pdf.qrcode.ByteMatrix.java

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/*
 * Copyright 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.itextpdf.text.pdf.qrcode;

/**
 * A class which wraps a 2D array of bytes. The default usage is signed. If you want to use it as a
 * unsigned container, it's up to you to do byteValue & 0xff at each location.
 *
 * JAVAPORT: The original code was a 2D array of ints, but since it only ever gets assigned
 * -1, 0, and 1, I'm going to use less memory and go with bytes.
 *
 * @author dswitkin@google.com (Daniel Switkin)
 * @since 5.0.2
 */
public final class ByteMatrix {

    private final byte[][] bytes;
    private final int width;
    private final int height;

    public ByteMatrix(int width, int height) {
        bytes = new byte[height][width];
        this.width = width;
        this.height = height;
    }

    public int getHeight() {
        return height;
    }

    public int getWidth() {
        return width;
    }

    public byte get(int x, int y) {
        return bytes[y][x];
    }

    public byte[][] getArray() {
        return bytes;
    }

    public void set(int x, int y, byte value) {
        bytes[y][x] = value;
    }

    public void set(int x, int y, int value) {
        bytes[y][x] = (byte) value;
    }

    public void clear(byte value) {
        for (int y = 0; y < height; ++y) {
            for (int x = 0; x < width; ++x) {
                bytes[y][x] = value;
            }
        }
    }

    public String toString() {
        StringBuffer result = new StringBuffer(2 * width * height + 2);
        for (int y = 0; y < height; ++y) {
            for (int x = 0; x < width; ++x) {
                switch (bytes[y][x]) {
                case 0:
                    result.append(" 0");
                    break;
                case 1:
                    result.append(" 1");
                    break;
                default:
                    result.append("  ");
                    break;
                }
            }
            result.append('\n');
        }
        return result.toString();
    }

}