Add parts of zxing library to generate qr codes

1 files changed, 239 insertions, 0 deletions

diff --git a/OpenPGP-Keychain/src/com/google/zxing/qrcode/encoder/QRCode.java b/OpenPGP-Keychain/src/com/google/zxing/qrcode/encoder/QRCode.java
new file mode 100644
index 000000000..05c818513
--- /dev/null
+++ b/OpenPGP-Keychain/src/com/google/zxing/qrcode/encoder/QRCode.java
@@ -0,0 +1,239 @@
+/*
+ * 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.google.zxing.qrcode.encoder;
+
+import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
+import com.google.zxing.qrcode.decoder.Mode;
+
+/**
+ * @author satorux@google.com (Satoru Takabayashi) - creator
+ * @author dswitkin@google.com (Daniel Switkin) - ported from C++
+ */
+public final class QRCode {
+
+  public static final int NUM_MASK_PATTERNS = 8;
+
+  private Mode mode;
+  private ErrorCorrectionLevel ecLevel;
+  private int version;
+  private int matrixWidth;
+  private int maskPattern;
+  private int numTotalBytes;
+  private int numDataBytes;
+  private int numECBytes;
+  private int numRSBlocks;
+  private ByteMatrix matrix;
+
+  public QRCode() {
+    mode = null;
+    ecLevel = null;
+    version = -1;
+    matrixWidth = -1;
+    maskPattern = -1;
+    numTotalBytes = -1;
+    numDataBytes = -1;
+    numECBytes = -1;
+    numRSBlocks = -1;
+    matrix = null;
+  }
+
+  // Mode of the QR Code.
+  public Mode getMode() {
+    return mode;
+  }
+
+  // Error correction level of the QR Code.
+  public ErrorCorrectionLevel getECLevel() {
+    return ecLevel;
+  }
+
+  // Version of the QR Code.  The bigger size, the bigger version.
+  public int getVersion() {
+    return version;
+  }
+
+  // ByteMatrix width of the QR Code.
+  public int getMatrixWidth() {
+    return matrixWidth;
+  }
+
+  // Mask pattern of the QR Code.
+  public int getMaskPattern() {
+    return maskPattern;
+  }
+
+  // Number of total bytes in the QR Code.
+  public int getNumTotalBytes() {
+    return numTotalBytes;
+  }
+
+  // Number of data bytes in the QR Code.
+  public int getNumDataBytes() {
+    return numDataBytes;
+  }
+
+  // Number of error correction bytes in the QR Code.
+  public int getNumECBytes() {
+    return numECBytes;
+  }
+
+  // Number of Reedsolomon blocks in the QR Code.
+  public int getNumRSBlocks() {
+    return numRSBlocks;
+  }
+
+  // ByteMatrix data of the QR Code.
+  public ByteMatrix getMatrix() {
+    return matrix;
+  }
+  
+
+  // Return the value of the module (cell) pointed by "x" and "y" in the matrix of the QR Code. They
+  // call cells in the matrix "modules". 1 represents a black cell, and 0 represents a white cell.
+  public int at(int x, int y) {
+    // The value must be zero or one.
+    int value = matrix.get(x, y);
+    if (!(value == 0 || value == 1)) {
+      // this is really like an assert... not sure what better exception to use?
+      throw new RuntimeException("Bad value");
+    }
+    return value;
+  }
+
+  // Checks all the member variables are set properly. Returns true on success. Otherwise, returns
+  // false.
+  public boolean isValid() {
+    return
+        // First check if all version are not uninitialized.
+        mode != null &&
+        ecLevel != null &&
+        version != -1 &&
+        matrixWidth != -1 &&
+        maskPattern != -1 &&
+        numTotalBytes != -1 &&
+        numDataBytes != -1 &&
+        numECBytes != -1 &&
+        numRSBlocks != -1 &&
+        // Then check them in other ways..
+        isValidMaskPattern(maskPattern) &&
+        numTotalBytes == numDataBytes + numECBytes &&
+        // ByteMatrix stuff.
+        matrix != null &&
+        matrixWidth == matrix.getWidth() &&
+        // See 7.3.1 of JISX0510:2004 (p.5).
+        matrix.getWidth() == matrix.getHeight(); // Must be square.
+  }
+
+  // Return debug String.
+  public String toString() {
+    StringBuffer result = new StringBuffer(200);
+    result.append("<<\n");
+    result.append(" mode: ");
+    result.append(mode);
+    result.append("\n ecLevel: ");
+    result.append(ecLevel);
+    result.append("\n version: ");
+    result.append(version);
+    result.append("\n matrixWidth: ");
+    result.append(matrixWidth);
+    result.append("\n maskPattern: ");
+    result.append(maskPattern);
+    result.append("\n numTotalBytes: ");
+    result.append(numTotalBytes);
+    result.append("\n numDataBytes: ");
+    result.append(numDataBytes);
+    result.append("\n numECBytes: ");
+    result.append(numECBytes);
+    result.append("\n numRSBlocks: ");
+    result.append(numRSBlocks);
+    if (matrix == null) {
+      result.append("\n matrix: null\n");
+    } else {
+      result.append("\n matrix:\n");
+      result.append(matrix.toString());
+    }
+    result.append(">>\n");
+    return result.toString();
+  }
+
+  public void setMode(Mode value) {
+    mode = value;
+  }
+
+  public void setECLevel(ErrorCorrectionLevel value) {
+    ecLevel = value;
+  }
+
+  public void setVersion(int value) {
+    version = value;
+  }
+
+  public void setMatrixWidth(int value) {
+    matrixWidth = value;
+  }
+
+  public void setMaskPattern(int value) {
+    maskPattern = value;
+  }
+
+  public void setNumTotalBytes(int value) {
+    numTotalBytes = value;
+  }
+
+  public void setNumDataBytes(int value) {
+    numDataBytes = value;
+  }
+
+  public void setNumECBytes(int value) {
+    numECBytes = value;
+  }
+
+  public void setNumRSBlocks(int value) {
+    numRSBlocks = value;
+  }
+
+  // This takes ownership of the 2D array.
+  public void setMatrix(ByteMatrix value) {
+    matrix = value;
+  }
+
+  // Check if "mask_pattern" is valid.
+  public static boolean isValidMaskPattern(int maskPattern) {
+    return maskPattern >= 0 && maskPattern < NUM_MASK_PATTERNS;
+  }
+
+  // Return true if the all values in the matrix are binary numbers.
+  //
+  // JAVAPORT: This is going to be super expensive and unnecessary, we should not call this in
+  // production. I'm leaving it because it may be useful for testing. It should be removed entirely
+  // if ByteMatrix is changed never to contain a -1.
+  /*
+  private static boolean EverythingIsBinary(final ByteMatrix matrix) {
+    for (int y = 0; y < matrix.height(); ++y) {
+      for (int x = 0; x < matrix.width(); ++x) {
+        int value = matrix.get(y, x);
+        if (!(value == 0 || value == 1)) {
+          // Found non zero/one value.
+          return false;
+        }
+      }
+    }
+    return true;
+  }
+   */
+
+}