Merge "Move the QrCodeGenerator from Settings to SettingsLib for Wifi and BT"
diff --git a/packages/SettingsLib/Android.bp b/packages/SettingsLib/Android.bp
index 7560c41..3e58e9a 100644
--- a/packages/SettingsLib/Android.bp
+++ b/packages/SettingsLib/Android.bp
@@ -74,6 +74,7 @@
"SettingsLibTwoTargetPreference",
"SettingsLibSettingsTransition",
"SettingsLibActivityEmbedding",
+ "zxing-core-1.7",
],
}
diff --git a/packages/SettingsLib/src/com/android/settingslib/qrcode/QrCodeGenerator.java b/packages/SettingsLib/src/com/android/settingslib/qrcode/QrCodeGenerator.java
new file mode 100644
index 0000000..bc5824a
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/qrcode/QrCodeGenerator.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * 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.android.settingslib.qrcode;
+
+import android.graphics.Bitmap;
+import android.graphics.Color;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.MultiFormatWriter;
+import com.google.zxing.WriterException;
+import com.google.zxing.common.BitMatrix;
+
+import java.nio.charset.CharsetEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+import java.util.Map;
+
+public final class QrCodeGenerator {
+ /**
+ * Generates a barcode image with {@code contents}.
+ *
+ * @param contents The contents to encode in the barcode
+ * @param size The preferred image size in pixels
+ * @return Barcode bitmap
+ */
+ public static Bitmap encodeQrCode(String contents, int size)
+ throws WriterException, IllegalArgumentException {
+ final Map<EncodeHintType, Object> hints = new HashMap<>();
+ if (!isIso88591(contents)) {
+ hints.put(EncodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name());
+ }
+
+ final BitMatrix qrBits = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE,
+ size, size, hints);
+ final Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.RGB_565);
+ for (int x = 0; x < size; x++) {
+ for (int y = 0; y < size; y++) {
+ bitmap.setPixel(x, y, qrBits.get(x, y) ? Color.BLACK : Color.WHITE);
+ }
+ }
+ return bitmap;
+ }
+
+ private static boolean isIso88591(String contents) {
+ CharsetEncoder encoder = StandardCharsets.ISO_8859_1.newEncoder();
+ return encoder.canEncode(contents);
+ }
+}