Examples with EncodeHintType com.google.zxing.EncodeHintType used on opensource projects

Example 11 with EncodeHintType

use of com.google.zxing.EncodeHintType in project QRCode by 5peak2me.

the class EncodingHandler method createQRCode.

public static Bitmap createQRCode(String str, int widthAndHeight) throws WriterException {
    Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    BitMatrix matrix = new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight);
    int width = matrix.getWidth();
    int height = matrix.getHeight();
    int[] pixels = new int[width * height];
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            if (matrix.get(x, y)) {
                pixels[y * width + x] = BLACK;
            } else {
                //解决此Bitmap保存到本地图片变黑色的bug
                pixels[y * width + x] = BACKGROUNDCOLRO;
            }
        }
    }
    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
}

Example 12 with EncodeHintType

use of com.google.zxing.EncodeHintType in project smartmodule by carozhu.

the class GenerateQrcodePIcHelper method createQRCodeWithLogo.

/**
     * 生成带logo的二维码，logo默认为二维码的1/5
     *
     * @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（）
     * @param mBitmap logo文件
     * @return bitmap
     */
public static Bitmap createQRCodeWithLogo(String text, int size, Bitmap mBitmap) {
    try {
        IMAGE_HALFWIDTH = size / 10;
        Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        /*
             * 设置容错级别，默认为ErrorCorrectionLevel.L
             * 因为中间加入logo所以建议你把容错级别调至H,否则可能会出现识别不了
             */
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, size, size, hints);
        //矩阵高度
        int width = bitMatrix.getWidth();
        //矩阵宽度
        int height = bitMatrix.getHeight();
        int halfW = width / 2;
        int halfH = height / 2;
        Matrix m = new Matrix();
        float sx = (float) 2 * IMAGE_HALFWIDTH / mBitmap.getWidth();
        float sy = (float) 2 * IMAGE_HALFWIDTH / mBitmap.getHeight();
        m.setScale(sx, sy);
        //设置缩放信息
        //将logo图片按martix设置的信息缩放
        mBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap.getWidth(), mBitmap.getHeight(), m, false);
        int[] pixels = new int[size * size];
        for (int y = 0; y < size; y++) {
            for (int x = 0; x < size; x++) {
                if (x > halfW - IMAGE_HALFWIDTH && x < halfW + IMAGE_HALFWIDTH && y > halfH - IMAGE_HALFWIDTH && y < halfH + IMAGE_HALFWIDTH) {
                    //该位置用于存放图片信息
                    //记录图片每个像素信息
                    pixels[y * width + x] = mBitmap.getPixel(x - halfW + IMAGE_HALFWIDTH, y - halfH + IMAGE_HALFWIDTH);
                } else {
                    if (bitMatrix.get(x, y)) {
                        pixels[y * size + x] = 0xff000000;
                    } else {
                        //灰色-- 0xEEEEEEEE md_grey_200
                        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 13 with EncodeHintType

use of com.google.zxing.EncodeHintType 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 14 with EncodeHintType

use of com.google.zxing.EncodeHintType 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;
}

Example 15 with EncodeHintType

use of com.google.zxing.EncodeHintType in project camel by apache.

the class BarcodeDataFormatTest method testAddToHintMapEncodeHintTypeObject.

/**
     * Test of addToHintMap method, of class BarcodeDataFormat.
     */
@Test
public final void testAddToHintMapEncodeHintTypeObject() {
    EncodeHintType hintType = EncodeHintType.MARGIN;
    Object value = 10;
    BarcodeDataFormat instance = new BarcodeDataFormat();
    instance.addToHintMap(hintType, value);
    assertTrue(instance.getWriterHintMap().containsKey(hintType));
    assertEquals(instance.getWriterHintMap().get(hintType), value);
}