001/* 002 * Copyright 2008 ZXing authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package com.itextpdf.text.pdf.qrcode; 018 019/** 020 * A class which wraps a 2D array of bytes. The default usage is signed. If you want to use it as a 021 * unsigned container, it's up to you to do byteValue & 0xff at each location. 022 * 023 * JAVAPORT: The original code was a 2D array of ints, but since it only ever gets assigned 024 * -1, 0, and 1, I'm going to use less memory and go with bytes. 025 * 026 * @author dswitkin@google.com (Daniel Switkin) 027 * @since 5.0.2 028 */ 029public final class ByteMatrix { 030 031 private final byte[][] bytes; 032 private final int width; 033 private final int height; 034 035 public ByteMatrix(int width, int height) { 036 bytes = new byte[height][width]; 037 this.width = width; 038 this.height = height; 039 } 040 041 public int getHeight() { 042 return height; 043 } 044 045 public int getWidth() { 046 return width; 047 } 048 049 public byte get(int x, int y) { 050 return bytes[y][x]; 051 } 052 053 public byte[][] getArray() { 054 return bytes; 055 } 056 057 public void set(int x, int y, byte value) { 058 bytes[y][x] = value; 059 } 060 061 public void set(int x, int y, int value) { 062 bytes[y][x] = (byte) value; 063 } 064 065 public void clear(byte value) { 066 for (int y = 0; y < height; ++y) { 067 for (int x = 0; x < width; ++x) { 068 bytes[y][x] = value; 069 } 070 } 071 } 072 073 public String toString() { 074 StringBuffer result = new StringBuffer(2 * width * height + 2); 075 for (int y = 0; y < height; ++y) { 076 for (int x = 0; x < width; ++x) { 077 switch (bytes[y][x]) { 078 case 0: 079 result.append(" 0"); 080 break; 081 case 1: 082 result.append(" 1"); 083 break; 084 default: 085 result.append(" "); 086 break; 087 } 088 } 089 result.append('\n'); 090 } 091 return result.toString(); 092 } 093 094}