Examples with BitMatrix com.google.zxing.common.BitMatrix used on opensource projects

Example 61 with BitMatrix

use of com.google.zxing.common.BitMatrix in project weex-example by KalicyZhou.

the class QRCodeEncoder method encodeAsBitmap.

Bitmap encodeAsBitmap() throws WriterException {
    String contentsToEncode = contents;
    if (contentsToEncode == null) {
        return null;
    }
    Map<EncodeHintType, Object> hints = null;
    String encoding = guessAppropriateEncoding(contentsToEncode);
    if (encoding != null) {
        hints = new EnumMap<>(EncodeHintType.class);
        hints.put(EncodeHintType.CHARACTER_SET, encoding);
    }
    BitMatrix result;
    try {
        result = new MultiFormatWriter().encode(contentsToEncode, format, dimension, dimension, hints);
    } catch (IllegalArgumentException iae) {
        // Unsupported format
        return null;
    }
    int width = result.getWidth();
    int height = result.getHeight();
    int[] pixels = new int[width * height];
    for (int y = 0; y < height; y++) {
        int offset = y * width;
        for (int x = 0; x < width; x++) {
            pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
        }
    }
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}

Example 62 with BitMatrix

use of com.google.zxing.common.BitMatrix in project run-wallet-android by runplay.

the class QR method generateImage.

public static final Bitmap generateImage(final String text, Activity activity) {
    if (text == null || text.trim().isEmpty()) {
        return null;
    }
    int size = 390;
    Map<EncodeHintType, Object> hintMap = new EnumMap<>(EncodeHintType.class);
    hintMap.put(EncodeHintType.CHARACTER_SET, "UTF-8");
    hintMap.put(EncodeHintType.MARGIN, 1);
    QRCodeWriter qrCodeWriter = new QRCodeWriter();
    try {
        BitMatrix byteMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, size, size, hintMap);
        int height = byteMatrix.getHeight();
        int width = byteMatrix.getWidth();
        final Bitmap qrImage = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                qrImage.setPixel(x, y, byteMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
            }
        }
        Bitmap background = Bitmap.createScaledBitmap(((BitmapDrawable) B.getDrawable(activity, R.drawable.qr_bg)).getBitmap(), 390, 90, false);
        Bitmap bmOverlay = Bitmap.createBitmap(qrImage.getWidth(), qrImage.getHeight() + 90, qrImage.getConfig());
        Canvas canvas = new Canvas(bmOverlay);
        canvas.drawBitmap(qrImage, 0, 90, null);
        canvas.drawBitmap(background, 0, 0, null);
        return bmOverlay;
    } catch (WriterException e) {
        Log.e("QR.ex", "" + e.getMessage());
    }
    return null;
}

Example 63 with BitMatrix

use of com.google.zxing.common.BitMatrix in project smartmodule by carozhu.

the class GenerateQrcodePIcHelper method createQRCode.

/**
     * 生成二维码
     *
     * @param text 需要生成二维码的文字、网址等
     * @param size 需要生成二维码的大小（）
     * @return bitmap
     */
public static Bitmap createQRCode(String text, int size) {
    try {
        Hashtable<EncodeHintType, String> hints = new Hashtable<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, size, size, hints);
        int[] pixels = new int[size * size];
        for (int y = 0; y < size; y++) {
            for (int x = 0; x < size; x++) {
                if (bitMatrix.get(x, y)) {
                    pixels[y * size + x] = 0xff000000;
                } else {
                    pixels[y * size + x] = 0xffffffff;
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, size, 0, 0, size, size);
        return bitmap;
    } catch (WriterException e) {
        e.printStackTrace();
        return null;
    }
}

Example 64 with BitMatrix

use of com.google.zxing.common.BitMatrix in project jfinal by jfinal.

the class QrCodeRender method render.

public void render() {
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/png");
    Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    //去掉白色边框，极度重要，否则二维码周围的白边会很宽
    hints.put(EncodeHintType.MARGIN, 0);
    if (errorCorrectionLevel != null) {
        hints.put(EncodeHintType.ERROR_CORRECTION, errorCorrectionLevel);
    }
    try {
        // MultiFormatWriter 可支持多种格式的条形码，在此直接使用 QRCodeWriter，通过查看源码可知少创建一个对象
        // BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
        QRCodeWriter writer = new QRCodeWriter();
        BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
        // 经测试 200 X 200 大小的二维码使用 "png" 格式只有 412B，而 "jpg" 却达到 15KB
        // format: "jpg"、"png"
        MatrixToImageWriter.writeToStream(bitMatrix, "png", response.getOutputStream());
    } catch (Exception e) {
        throw new RenderException(e);
    }
}

Example 65 with BitMatrix

use of com.google.zxing.common.BitMatrix in project Lazy by l123456789jy.

the class CreatQRCodeImg method createQRImage.

/**
     * 生成二维码Bitmap
     *
     * @param content   内容
     * @param widthPix  图片宽度
     * @param heightPix 图片高度
     * @param logoBm    二维码中心的Logo图标（可以为null）
     * @param filePath  用于存储二维码图片的文件路径
     * @return 生成二维码及保存文件是否成功
     */
public static boolean createQRImage(String content, int widthPix, int heightPix, Bitmap logoBm, String filePath) {
    try {
        if (content == null || "".equals(content)) {
            return false;
        }
        //配置参数
        Map<EncodeHintType, Object> hints = new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        //容错级别
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        //设置空白边距的宽度
        //            hints.put(EncodeHintType.MARGIN, 2); //default is 4
        // 图像数据转换，使用了矩阵转换
        BitMatrix bitMatrix = new QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, widthPix, heightPix, hints);
        int[] pixels = new int[widthPix * heightPix];
        // 两个for循环是图片横列扫描的结果
        for (int y = 0; y < heightPix; y++) {
            for (int x = 0; x < widthPix; x++) {
                if (bitMatrix.get(x, y)) {
                    pixels[y * widthPix + x] = 0xff000000;
                } else {
                    pixels[y * widthPix + x] = 0xffffffff;
                }
            }
        }
        // 生成二维码图片的格式，使用ARGB_8888
        Bitmap bitmap = Bitmap.createBitmap(widthPix, heightPix, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, widthPix, 0, 0, widthPix, heightPix);
        if (logoBm != null) {
            bitmap = addLogo(bitmap, logoBm);
        }
        //必须使用compress方法将bitmap保存到文件中再进行读取。直接返回的bitmap是没有任何压缩的，内存消耗巨大！
        return bitmap != null && bitmap.compress(Bitmap.CompressFormat.JPEG, 70, new FileOutputStream(filePath));
    } catch (WriterException | IOException e) {
        e.printStackTrace();
    }
    return false;
}