Merge "Add QrCodeGenerator for QrCode encoding" (4942fd2a) · Commits · e / os / android_packages_apps_Settings

src/com/android/settings/wifi/qrcode/QrCodeGenerator.java

0 → 100644

+47 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2018 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.settings.wifi.qrcode;

		import android.graphics.Bitmap;
		import android.graphics.Color;

		import com.google.zxing.BarcodeFormat;
		import com.google.zxing.MultiFormatWriter;
		import com.google.zxing.WriterException;
		import com.google.zxing.common.BitMatrix;

		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 BitMatrix qrBits = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE,
		size, size);
		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;
		}
		}

tests/robotests/src/com/android/settings/wifi/qrcode/QrCameraTest.java

+4 −26

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		@@ -30,13 +30,10 @@ import android.view.SurfaceHolder;
		import com.android.settings.R;
		import com.android.settings.testutils.SettingsRobolectricTestRunner;

		import com.google.zxing.BarcodeFormat;
		import com.google.zxing.BinaryBitmap;
		import com.google.zxing.LuminanceSource;
		import com.google.zxing.RGBLuminanceSource;
		import com.google.zxing.MultiFormatWriter;
		import com.google.zxing.WriterException;
		import com.google.zxing.common.BitMatrix;
		import com.google.zxing.common.HybridBinarizer;

		import java.util.concurrent.CountDownLatch;
		@@ -111,36 +108,17 @@ public class QrCameraTest {
		final String googleUrl = "http://www.google.com";

		try {
		Bitmap bmp = encodeQrCode(googleUrl, 320);
		int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
		final Bitmap bmp = QrCodeGenerator.encodeQrCode(googleUrl, 320);
		final int[] intArray = new int[bmp.getWidth() * bmp.getHeight()];
		bmp.getPixels(intArray, 0, bmp.getWidth(), 0, 0, bmp.getWidth(), bmp.getHeight());
		LuminanceSource source = new RGBLuminanceSource(bmp.getWidth(), bmp.getHeight(),
		intArray);

		BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
		final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
		mCamera.decodeImage(bitmap);
		bmp.recycle();
		} catch (WriterException e) {
		}

		assertThat(mQrCode).isEqualTo(googleUrl);
		}

		private Bitmap encodeQrCode(String qrCode, int size) throws WriterException {
		BitMatrix qrBits = null;
		try {
		qrBits =
		new MultiFormatWriter().encode(qrCode, BarcodeFormat.QR_CODE, size, size, null);
		} catch (IllegalArgumentException iae) {
		// Should never reach here.
		}
		assertThat(qrBits).isNotNull();

		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;
		}
		}