Example usage for android.graphics Bitmap setPixel

Introduction

In this page you can find the example usage for android.graphics Bitmap setPixel.

Prototype

public void setPixel(int x, int y, @ColorInt int color) 

Source Link

Document

Write the specified Color into the bitmap (assuming it is mutable) at the x,y coordinate.

Usage

From source file:Main.java

/**
 * @param color Color of the region//  www .  ja v a2s.  c  o m
 * @param x X coordinate of the region
 * @param y Y coordinate of the region
 * @param bmp Source bitmap
 * */
static void fillRigeon(int color, int x, int y, Bitmap bmp) {

    for (int i = x * STEP; i < (x + 1) * STEP; i++)
        for (int j = y * STEP; j < (y + 1) * STEP; j++) {
            bmp.setPixel(i, j, color);
        }
}

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From source file:Main.java

/**
 * Fill the hole in the image (version 2)
 *//*from ww w  .java  2s .co m*/
public static void fillHole2(Bitmap bmp) {

    for (int j = 1; j < bmp.getWidth(); j++) {
        for (int i = 1; i < bmp.getHeight() - 1; i++) {
            if ((bmp.getPixel(i, j) == Color.TRANSPARENT) && (bmp.getPixel(i + 1, j) != Color.TRANSPARENT)) {
                bmp.setPixel(i, j, bmp.getPixel(i + 1, j)); // set to the next-below pixel
            }
        }
    }
}

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From source file:Main.java

/**
 * Fill the hole in the image (version 1)
 *///from  ww  w .j ava2s  .  com
public static void fillHole1(Bitmap bmp) {

    for (int j = 1; j < bmp.getWidth() - 1; j++) {
        for (int i = 1; i < bmp.getHeight(); i++) {
            if ((bmp.getPixel(i, j) == Color.TRANSPARENT) && (bmp.getPixel(i, j + 1) != Color.TRANSPARENT)) {
                bmp.setPixel(i, j, bmp.getPixel(i, j + 1)); // set to the right-next pixel
            }
        }
    }
}

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From source file:org.odk.collect.android.utilities.QRCodeUtils.java

public static Bitmap generateQRBitMap(Collection<String> keys) {
    String content;/*from  ww  w  .  jav  a2  s .  c o m*/
    try {
        SharedPreferencesUtils obj = new SharedPreferencesUtils();
        content = obj.getJSONFromPreferences(keys);
        String compressedData = CompressionUtils.compress(content);

        //Maximum capacity for QR Codes is 4,296 characters (Alphanumeric)
        if (compressedData.length() > 4000) {
            ToastUtils.showLongToast(Collect.getInstance().getString(R.string.encoding_max_limit));
            Timber.e(Collect.getInstance().getString(R.string.encoding_max_limit));
            return null;
        }

        Map<EncodeHintType, ErrorCorrectionLevel> hints = new HashMap<>();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix bitMatrix = qrCodeWriter.encode(compressedData, BarcodeFormat.QR_CODE, 400, 400, hints);

        int width = bitMatrix.getWidth();
        int height = bitMatrix.getHeight();

        Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);

        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                bmp.setPixel(x, y, bitMatrix.get(x, y) ? Color.BLACK : Color.WHITE);
            }
        }
        return bmp;
    } catch (WriterException | IOException | JSONException e) {
        Timber.e(e);
    }
    return null;
}

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From source file:Main.java

public static Bitmap doColorFilter(Bitmap src, double red, double green, double blue) {
    int w = src.getWidth();
    int h = src.getHeight();

    Bitmap bmOut = Bitmap.createBitmap(w, h, src.getConfig());
    int A, R, G, B, pixel;
    for (int x = 0; x < w; x++) {
        for (int y = 0; y < h; y++) {
            pixel = src.getPixel(x, y);//  w w w.j  a  v  a  2 s.  c o  m
            A = Color.alpha(pixel);
            R = (int) (Color.red(pixel) * red);
            G = (int) (Color.green(pixel) * green);
            B = (int) (Color.blue(pixel) * blue);
            bmOut.setPixel(x, y, Color.argb(A, R, G, B));
        }
    }
    return bmOut;
}

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From source file:com.example.georg.theupub.ProfileActivity.java

public static Bitmap toBitmap(BitMatrix matrix) {
    int height = matrix.getHeight();
    int width = matrix.getWidth();
    Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
    for (int x = 0; x < width; x++) {
        for (int y = 0; y < height; y++) {
            bmp.setPixel(x, y, matrix.get(x, y) ? Color.BLACK : Color.WHITE);
        }/*w  w  w  . j a v a2 s. co m*/
    }
    return bmp;
}

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From source file:com.github.piasy.rxqrcode.RxQrCode.java

/**
 * @Deprecated use {@link #generateQrCodeFile(Context, String, int, int)} to avoid bitmap
 * management./*from  ww  w .  j a v  a  2s  .c o m*/
 */
@Deprecated
public static Observable<Bitmap> generateQrCode(String content, int width, int height) {
    return Observable.fromEmitter(emitter -> {
        MultiFormatWriter writer = new MultiFormatWriter();
        try {
            BitMatrix bm = writer.encode(content, BarcodeFormat.QR_CODE, QR_CODE_LENGTH, QR_CODE_LENGTH,
                    Collections.singletonMap(EncodeHintType.MARGIN, 0));
            Bitmap bitmap = Bitmap.createBitmap(QR_CODE_LENGTH, QR_CODE_LENGTH, Bitmap.Config.ARGB_8888);

            for (int i = 0; i < QR_CODE_LENGTH; i++) {
                for (int j = 0; j < QR_CODE_LENGTH; j++) {
                    bitmap.setPixel(i, j, bm.get(i, j) ? Color.BLACK : Color.WHITE);
                }
            }
            emitter.onNext(Bitmap.createScaledBitmap(bitmap, width, height, true));
            emitter.onCompleted();
        } catch (WriterException e) {
            emitter.onError(e);
        }
    }, Emitter.BackpressureMode.BUFFER);
}

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From source file:Main.java

public static Bitmap subtract(Bitmap bitmap1, Bitmap bitmap2) {
    int width = bitmap1.getWidth();
    int height = bitmap1.getHeight();
    Bitmap grayBitmap1 = toGrayScale(bitmap1);
    Bitmap grayBitmap2 = toGrayScale(bitmap2);
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < width; x++)
        for (int y = 0; y < height; y++) {
            int value1 = Color.blue(grayBitmap1.getPixel(x, y));
            int value2 = Color.blue(grayBitmap2.getPixel(x, y));
            int resultValue = Math.abs(value2 - value1);
            //                resultValue = (resultValue>255/3)?resultValue:0;
            result.setPixel(x, y, Color.rgb(resultValue, resultValue, resultValue));
        }//from   w w  w.j  av  a  2  s.com
    //        grayBitmap1.recycle();
    //        grayBitmap2.recycle();
    return result;
}

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From source file:Main.java

public static void invertImage(Bitmap b) {
    int A, R, G, B;
    int pixelColor;
    int height = b.getHeight();
    int width = b.getWidth();

    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            pixelColor = b.getPixel(x, y);
            A = Color.alpha(pixelColor);

            R = 255 - Color.red(pixelColor);
            G = 255 - Color.green(pixelColor);
            B = 255 - Color.blue(pixelColor);

            b.setPixel(x, y, Color.argb(A, R, G, B));
        }/*from   w w w  .j  a va  2  s. c  o m*/
    }
}

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From source file:Main.java

public static Bitmap multiply(Bitmap bitmap1, Bitmap bitmap2) {
    double alpha = 0.1;
    int width = bitmap1.getWidth();
    int height = bitmap1.getHeight();
    Bitmap grayBitmap1 = toGrayScale(bitmap1);
    Bitmap grayBitmap2 = toGrayScale(bitmap2);
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < width; x++)
        for (int y = 0; y < height; y++) {
            int value1 = Color.blue(grayBitmap1.getPixel(x, y));
            int value2 = Color.blue(grayBitmap2.getPixel(x, y));
            int resultValue = (int) (Math.abs((value2 / 255.0) * (value1 / 255.0)) * 255);
            //                resultValue = (resultValue>255/2)?255:0;
            result.setPixel(x, y, Color.rgb(resultValue, resultValue, resultValue));
        }//from  w  ww .j  av  a2 s .co m
    //        grayBitmap1.recycle();
    //        grayBitmap2.recycle();
    return result;
}

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