Example usage for android.graphics Matrix setScale

List of usage examples for android.graphics Matrix setScale

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Introduction

In this page you can find the example usage for android.graphics Matrix setScale.

Prototype

public void setScale(float sx, float sy)

Source Link

Document

Set the matrix to scale by sx and sy.

Usage

From source file:com.cmput301w17t07.moody.EditMoodActivity.java

/**
 * Compression of image. From: http://blog.csdn.net/harryweasley/article/details/51955467 <br>
 * author: HarryWeasley 2016-07-20 15:26 <br>
 * taken by Xin Huang 2017-03-04 18:45 <br>
 * for compressing the image to meet the project storage requirements <br>
 * @param image  // the image to be compressed <br>
 * @return Bitmap  // the compressed image <br>
 *//*  w  w  w.  j a  v  a2  s.  c o  m*/
public Bitmap compress(Bitmap image) {
    try {
        // Compression of image. From: http://blog.csdn.net/harryweasley/article/details/51955467
        // for compressing the image to meet the project storage requirements
        while (((image.getRowBytes() * image.getHeight()) / 8) > 65536) {
            BitmapFactory.Options options2 = new BitmapFactory.Options();
            options2.inPreferredConfig = Bitmap.Config.RGB_565;
            Matrix matrix = new Matrix();
            matrix.setScale(0.5f, 0.5f);
            image = Bitmap.createBitmap(image, 0, 0, image.getWidth(), image.getHeight(), matrix, true);
        }
    } catch (Exception E) {
        E.printStackTrace();
    }
    return image;
}

From source file:com.cmput301w17t07.moody.CreateMoodActivity.java

/**
 * Compression of image. From: http://blog.csdn.net/harryweasley/article/details/51955467 <br>
 * author: HarryWeasley 2016-07-20 15:26 <br>
 * taken by Xin Huang 2017-03-04 18:45 <br>
 * for compressing the image to meet the project storage requirements <br>
 * @param image <br>/*from   w ww. j a va 2  s . c  o  m*/
 * @return Bitmap image <br>
 */
public Bitmap compress(Bitmap image) {
    try {
        while (((image.getRowBytes() * image.getHeight()) / 8) > 65536) {
            BitmapFactory.Options options2 = new BitmapFactory.Options();
            options2.inPreferredConfig = Bitmap.Config.RGB_565;

            Matrix matrix = new Matrix();
            matrix.setScale(0.5f, 0.5f);
            image = Bitmap.createBitmap(image, 0, 0, image.getWidth(), image.getHeight(), matrix, true);
        }
    } catch (Exception E) {

    }
    return image;
}

From source file:com.klinker.android.twitter.activities.compose.Compose.java

public static Bitmap rotateBitmap(Bitmap bitmap, int orientation) {

    Log.v("talon_composing_image", "rotation: " + orientation);

    try {//from   w  w  w .  j  av  a 2 s .c  o  m
        Matrix matrix = new Matrix();
        switch (orientation) {
        case ExifInterface.ORIENTATION_NORMAL:
            return bitmap;
        case ExifInterface.ORIENTATION_FLIP_HORIZONTAL:
            matrix.setScale(-1, 1);
            break;
        case ExifInterface.ORIENTATION_ROTATE_180:
            matrix.setRotate(180);
            break;
        case ExifInterface.ORIENTATION_FLIP_VERTICAL:
            matrix.setRotate(180);
            matrix.postScale(-1, 1);
            break;
        case ExifInterface.ORIENTATION_TRANSPOSE:
            matrix.setRotate(90);
            matrix.postScale(-1, 1);
            break;
        case ExifInterface.ORIENTATION_ROTATE_90:
            matrix.setRotate(90);
            break;
        case ExifInterface.ORIENTATION_TRANSVERSE:
            matrix.setRotate(-90);
            matrix.postScale(-1, 1);
            break;
        case ExifInterface.ORIENTATION_ROTATE_270:
            matrix.setRotate(-90);
            break;
        default:
            return bitmap;
        }
        try {
            Bitmap bmRotated = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix,
                    true);
            bitmap.recycle();
            return bmRotated;
        } catch (OutOfMemoryError e) {
            e.printStackTrace();
            return null;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return bitmap;
}

From source file:Main.java

private static Bitmap transform(Matrix scaler, Bitmap source, int targetWidth, int targetHeight, int options) {
    boolean scaleUp = (options & OPTIONS_SCALE_UP) != 0;
    boolean recycle = (options & OPTIONS_RECYCLE_INPUT) != 0;

    int deltaX = source.getWidth() - targetWidth;
    int deltaY = source.getHeight() - targetHeight;
    if (!scaleUp && (deltaX < 0 || deltaY < 0)) {
        Bitmap b2 = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(b2);

        int deltaXHalf = Math.max(0, deltaX / 2);
        int deltaYHalf = Math.max(0, deltaY / 2);
        Rect src = new Rect(deltaXHalf, deltaYHalf, deltaXHalf + Math.min(targetWidth, source.getWidth()),
                deltaYHalf + Math.min(targetHeight, source.getHeight()));
        int dstX = (targetWidth - src.width()) / 2;
        int dstY = (targetHeight - src.height()) / 2;
        Rect dst = new Rect(dstX, dstY, targetWidth - dstX, targetHeight - dstY);
        c.drawBitmap(source, src, dst, null);
        if (recycle)
            source.recycle();//  w  w  w.j  a  va2s. co m
        return b2;
    }

    float bitmapWidthF = source.getWidth();
    float bitmapHeightF = source.getHeight();
    float bitmapAspect = bitmapWidthF / bitmapHeightF;
    float viewAspect = (float) targetWidth / targetHeight;

    float scale = bitmapAspect > viewAspect ? targetHeight / bitmapHeightF : targetWidth / bitmapWidthF;
    if (scale < .9F || scale > 1F)
        scaler.setScale(scale, scale);
    else
        scaler = null;

    Bitmap b1;
    if (scaler != null)
        b1 = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), scaler, true);
    else
        b1 = source;

    if (recycle && b1 != source)
        source.recycle();

    int dx1 = Math.max(0, b1.getWidth() - targetWidth);
    int dy1 = Math.max(0, b1.getHeight() - targetHeight);

    Bitmap b2 = Bitmap.createBitmap(b1, dx1 / 2, dy1 / 2, targetWidth, targetHeight);

    if (b2 != b1 && (recycle || b1 != source))
        b1.recycle();

    return b2;
}

From source file:com.ddoskify.CameraOverlayActivity.java

/**
 * Initializes the UI and initiates the creation of a face detector.
 *///ww w  .java  2  s. com
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    FacebookSdk.sdkInitialize(getApplicationContext());
    AppEventsLogger.activateApp(this);

    mPreview = (CameraSourcePreview) findViewById(R.id.preview);
    mGraphicOverlay = (GraphicOverlay) findViewById(R.id.faceOverlay);
    mFaces = new ArrayList<FaceTracker>();

    final ImageButton button = (ImageButton) findViewById(R.id.flipButton);
    button.setOnClickListener(mFlipButtonListener);

    if (savedInstanceState != null) {
        mIsFrontFacing = savedInstanceState.getBoolean("IsFrontFacing");
    }

    mTakePictureButton = (Button) findViewById(R.id.takePictureButton);
    mTakePictureButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Log.e("CameraOverlay", "Button has been pressed");
            mCameraSource.takePicture(new CameraSource.ShutterCallback() {
                @Override
                public void onShutter() {
                    //                        mCameraSource.stop();
                    Snackbar.make(findViewById(android.R.id.content), "Picture Taken!", Snackbar.LENGTH_SHORT)
                            .setActionTextColor(Color.BLACK).show();
                }
            }, new CameraSource.PictureCallback() {
                public void onPictureTaken(byte[] data) {
                    int re = ActivityCompat.checkSelfPermission(getApplicationContext(),
                            Manifest.permission.WRITE_EXTERNAL_STORAGE);

                    if (!isStorageAllowed()) {
                        requestStoragePermission();
                    }

                    File pictureFile = getOutputMediaFile();
                    if (pictureFile == null) {
                        return;
                    }
                    try {

                        Bitmap picture = BitmapFactory.decodeByteArray(data, 0, data.length);
                        Bitmap resizedBitmap = Bitmap.createBitmap(mGraphicOverlay.getWidth(),
                                mGraphicOverlay.getHeight(), picture.getConfig());
                        Canvas canvas = new Canvas(resizedBitmap);

                        Matrix matrix = new Matrix();

                        matrix.setScale((float) resizedBitmap.getWidth() / (float) picture.getWidth(),
                                (float) resizedBitmap.getHeight() / (float) picture.getHeight());

                        if (mIsFrontFacing) {
                            // mirror by inverting scale and translating
                            matrix.preScale(-1, 1);
                            matrix.postTranslate(canvas.getWidth(), 0);
                        }
                        Paint paint = new Paint();
                        canvas.drawBitmap(picture, matrix, paint);

                        mGraphicOverlay.draw(canvas); // make those accessible

                        FileOutputStream fos = new FileOutputStream(pictureFile);
                        resizedBitmap.compress(Bitmap.CompressFormat.JPEG, 80, fos);
                        fos.close();

                        Intent intent = new Intent(getApplicationContext(), PhotoReviewActivity.class);
                        intent.putExtra(BITMAP_MESSAGE, pictureFile.toString());
                        startActivity(intent);
                        Log.d("CameraOverlay", "Starting PhotoReviewActivity " + pictureFile.toString());

                    } catch (FileNotFoundException e) {
                        Log.e("CameraOverlay", e.toString());
                    } catch (IOException e) {
                        Log.e("CameraOverlay", e.toString());
                    }
                }
            });
        }
    });

    // Check for the camera permission before accessing the camera.  If the
    // permission is not granted yet, request permission.
    int rc = ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA);
    if (rc == PackageManager.PERMISSION_GRANTED) {
        createCameraSource();
    } else {
        requestCameraPermission();
    }
}

From source file:github.madmarty.madsonic.util.ImageLoader.java

private Bitmap createReflection(Bitmap originalImage) {

    //   int reflectionH = 80;

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

    // Height of reflection
    int reflectionHeight = height / 2;

    // The gap we want between the reflection and the original image
    final int reflectionGap = 4;

    // Create a new bitmap with same width but taller to fit reflection
    Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + reflectionHeight),
            Bitmap.Config.ARGB_8888);//w w w.ja  v a2s  .  co m

    //// ----

    Bitmap reflection = Bitmap.createBitmap(width, reflectionHeight, Bitmap.Config.ARGB_8888);
    Bitmap blurryBitmap = Bitmap.createBitmap(originalImage, 0, height - reflectionHeight, height,
            reflectionHeight);

    // cheap and easy scaling algorithm; down-scale it, then
    // upscale it. The filtering during the scale operations
    // will blur the resulting image
    blurryBitmap = Bitmap
            .createScaledBitmap(
                    Bitmap.createScaledBitmap(blurryBitmap, blurryBitmap.getWidth() / 2,
                            blurryBitmap.getHeight() / 2, true),
                    blurryBitmap.getWidth(), blurryBitmap.getHeight(), true);

    // This shadier will hold a cropped, inverted,
    // blurry version of the original image
    BitmapShader bitmapShader = new BitmapShader(blurryBitmap, TileMode.CLAMP, TileMode.CLAMP);
    Matrix invertMatrix = new Matrix();
    invertMatrix.setScale(1f, -1f);
    invertMatrix.preTranslate(0, -reflectionHeight);
    bitmapShader.setLocalMatrix(invertMatrix);

    // This shader holds an alpha gradient
    Shader alphaGradient = new LinearGradient(0, 0, 0, reflectionHeight, 0x80ffffff, 0x00000000,
            TileMode.CLAMP);

    // This shader combines the previous two, resulting in a
    // blurred, fading reflection
    ComposeShader compositor = new ComposeShader(bitmapShader, alphaGradient, PorterDuff.Mode.DST_IN);

    Paint reflectionPaint = new Paint();
    reflectionPaint.setShader(compositor);

    // Draw the reflection into the bitmap that we will return
    Canvas canvas = new Canvas(reflection);
    canvas.drawRect(0, 0, reflection.getWidth(), reflection.getHeight(), reflectionPaint);

    /// -----

    // Create a new Canvas with the bitmap that's big enough for
    // the image plus gap plus reflection
    Canvas finalcanvas = new Canvas(bitmapWithReflection);

    // Draw in the original image
    finalcanvas.drawBitmap(originalImage, 0, 0, null);

    // Draw in the gap
    Paint defaultPaint = new Paint();

    // transparent gap
    defaultPaint.setColor(0);

    finalcanvas.drawRect(0, height, width, height + reflectionGap, defaultPaint);

    // Draw in the reflection
    finalcanvas.drawBitmap(reflection, 0, height + reflectionGap, null);

    return bitmapWithReflection;
}

From source file:ir.rasen.charsoo.controller.image_loader.core.decode.BaseImageDecoder.java

protected Bitmap considerExactScaleAndOrientatiton(Bitmap subsampledBitmap, ImageDecodingInfo decodingInfo,
        int rotation, boolean flipHorizontal) {
    Matrix m = new Matrix();
    // Scale to exact size if need
    ImageScaleType scaleType = decodingInfo.getImageScaleType();
    if (scaleType == ImageScaleType.EXACTLY || scaleType == ImageScaleType.EXACTLY_STRETCHED) {
        ImageSize srcSize = new ImageSize(subsampledBitmap.getWidth(), subsampledBitmap.getHeight(), rotation);
        float scale = ImageSizeUtils.computeImageScale(srcSize, decodingInfo.getTargetSize(),
                decodingInfo.getViewScaleType(), scaleType == ImageScaleType.EXACTLY_STRETCHED);
        if (Float.compare(scale, 1f) != 0) {
            m.setScale(scale, scale);

            if (loggingEnabled) {
                L.d(LOG_SCALE_IMAGE, srcSize, srcSize.scale(scale), scale, decodingInfo.getImageKey());
            }//  w w w . ja  v  a2s  . c  o m
        }
    }
    // Flip bitmap if need
    if (flipHorizontal) {
        m.postScale(-1, 1);

        if (loggingEnabled)
            L.d(LOG_FLIP_IMAGE, decodingInfo.getImageKey());
    }
    // Rotate bitmap if need
    if (rotation != 0) {
        m.postRotate(rotation);

        if (loggingEnabled)
            L.d(LOG_ROTATE_IMAGE, rotation, decodingInfo.getImageKey());
    }

    Bitmap finalBitmap = Bitmap.createBitmap(subsampledBitmap, 0, 0, subsampledBitmap.getWidth(),
            subsampledBitmap.getHeight(), m, true);
    if (finalBitmap != subsampledBitmap) {
        subsampledBitmap.recycle();
    }
    return finalBitmap;
}

From source file:Main.java

public static Bitmap transform(Matrix scaler, Bitmap source, int targetWidth, int targetHeight, boolean scaleUp,
        boolean recycle) {
    int deltaX = source.getWidth() - targetWidth;
    int deltaY = source.getHeight() - targetHeight;
    if (!scaleUp && (deltaX < 0 || deltaY < 0)) {
        /*/*from w  w  w.j  a  va 2  s  .c  om*/
         * In this case the bitmap is smaller, at least in one dimension,
         * than the target.  Transform it by placing as much of the image
         * as possible into the target and leaving the top/bottom or
         * left/right (or both) black.
         */
        Bitmap b2 = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(b2);

        int deltaXHalf = Math.max(0, deltaX / 2);
        int deltaYHalf = Math.max(0, deltaY / 2);
        Rect src = new Rect(deltaXHalf, deltaYHalf, deltaXHalf + Math.min(targetWidth, source.getWidth()),
                deltaYHalf + Math.min(targetHeight, source.getHeight()));
        int dstX = (targetWidth - src.width()) / 2;
        int dstY = (targetHeight - src.height()) / 2;
        Rect dst = new Rect(dstX, dstY, targetWidth - dstX, targetHeight - dstY);
        c.drawBitmap(source, src, dst, null);
        if (recycle) {
            source.recycle();
        }
        return b2;
    }
    float bitmapWidthF = source.getWidth();
    float bitmapHeightF = source.getHeight();

    float bitmapAspect = bitmapWidthF / bitmapHeightF;
    float viewAspect = (float) targetWidth / targetHeight;

    if (bitmapAspect > viewAspect) {
        float scale = targetHeight / bitmapHeightF;
        if (scale < .9F || scale > 1F) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }
    } else {
        float scale = targetWidth / bitmapWidthF;
        if (scale < .9F || scale > 1F) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }
    }

    Bitmap b1;
    if (scaler != null) {
        // this is used for minithumb and crop, so we want to filter here.
        b1 = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), scaler, true);
    } else {
        b1 = source;
    }

    if (recycle && b1 != source) {
        source.recycle();
    }

    int dx1 = Math.max(0, b1.getWidth() - targetWidth);
    int dy1 = Math.max(0, b1.getHeight() - targetHeight);

    Bitmap b2 = Bitmap.createBitmap(b1, dx1 / 2, dy1 / 2, targetWidth, targetHeight);

    if (b2 != b1) {
        if (recycle || b1 != source) {
            b1.recycle();
        }
    }

    return b2;
}

From source file:Main.java

/**
 * Transform source Bitmap to targeted width and height.
 *//*from w  w w .ja v  a 2  s . c om*/
private static Bitmap transform(Matrix scaler, Bitmap source, int targetWidth, int targetHeight, int options) {
    boolean scaleUp = (options & OPTIONS_SCALE_UP) != 0;
    boolean recycle = (options & OPTIONS_RECYCLE_INPUT) != 0;

    int deltaX = source.getWidth() - targetWidth;
    int deltaY = source.getHeight() - targetHeight;
    if (!scaleUp && (deltaX < 0 || deltaY < 0)) {
        /*
         * In this case the bitmap is smaller, at least in one dimension,
         * than the target. Transform it by placing as much of the image as
         * possible into the target and leaving the top/bottom or left/right
         * (or both) black.
         */
        Bitmap b2 = Bitmap.createBitmap(targetWidth, targetHeight, Config.ARGB_8888);
        Canvas c = new Canvas(b2);

        int deltaXHalf = Math.max(0, deltaX / 2);
        int deltaYHalf = Math.max(0, deltaY / 2);
        Rect src = new Rect(deltaXHalf, deltaYHalf, deltaXHalf + Math.min(targetWidth, source.getWidth()),
                deltaYHalf + Math.min(targetHeight, source.getHeight()));
        int dstX = (targetWidth - src.width()) / 2;
        int dstY = (targetHeight - src.height()) / 2;
        Rect dst = new Rect(dstX, dstY, targetWidth - dstX, targetHeight - dstY);
        c.drawBitmap(source, src, dst, null);
        if (recycle) {
            source.recycle();
        }
        return b2;
    }
    float bitmapWidthF = source.getWidth();
    float bitmapHeightF = source.getHeight();

    float bitmapAspect = bitmapWidthF / bitmapHeightF;
    float viewAspect = (float) targetWidth / targetHeight;

    if (bitmapAspect > viewAspect) {
        float scale = targetHeight / bitmapHeightF;
        if (scale < .9F || scale > 1F) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }
    } else {
        float scale = targetWidth / bitmapWidthF;
        if (scale < .9F || scale > 1F) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }
    }

    Bitmap b1;
    if (scaler != null) {
        // this is used for minithumb and crop, so we want to filter here.
        b1 = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), scaler, true);
    } else {
        b1 = source;
    }

    if (recycle && b1 != source) {
        source.recycle();
    }

    int dx1 = Math.max(0, b1.getWidth() - targetWidth);
    int dy1 = Math.max(0, b1.getHeight() - targetHeight);

    Bitmap b2 = Bitmap.createBitmap(b1, dx1 / 2, dy1 / 2, targetWidth, targetHeight);

    if (b2 != b1) {
        if (recycle || b1 != source) {
            b1.recycle();
        }
    }

    return b2;
}

From source file:Main.java

/**
 * Transform source Bitmap to targeted width and height.
 *///  w w  w  .  ja va 2  s. c om
private static Bitmap transform(Matrix scaler, Bitmap source, int targetWidth, int targetHeight, int options) {
    boolean scaleUp = (options & OPTIONS_SCALE_UP) != 0;
    boolean recycle = (options & OPTIONS_RECYCLE_INPUT) != 0;

    int deltaX = source.getWidth() - targetWidth;
    int deltaY = source.getHeight() - targetHeight;
    if (!scaleUp && (deltaX < 0 || deltaY < 0)) {
        /*
         * In this case the bitmap is smaller, at least in one dimension,
         * than the target.  Transform it by placing as much of the image
         * as possible into the target and leaving the top/bottom or
         * left/right (or both) black.
         */
        Bitmap b2 = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);
        Canvas c = new Canvas(b2);

        int deltaXHalf = Math.max(0, deltaX / 2);
        int deltaYHalf = Math.max(0, deltaY / 2);
        Rect src = new Rect(deltaXHalf, deltaYHalf, deltaXHalf + Math.min(targetWidth, source.getWidth()),
                deltaYHalf + Math.min(targetHeight, source.getHeight()));
        int dstX = (targetWidth - src.width()) / 2;
        int dstY = (targetHeight - src.height()) / 2;
        Rect dst = new Rect(dstX, dstY, targetWidth - dstX, targetHeight - dstY);
        c.drawBitmap(source, src, dst, null);
        if (recycle) {
            source.recycle();
        }
        return b2;
    }
    float bitmapWidthF = source.getWidth();
    float bitmapHeightF = source.getHeight();

    float bitmapAspect = bitmapWidthF / bitmapHeightF;
    float viewAspect = (float) targetWidth / targetHeight;

    if (bitmapAspect > viewAspect) {
        float scale = targetHeight / bitmapHeightF;
        if (scale < .9F || scale > 1F) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }
    } else {
        float scale = targetWidth / bitmapWidthF;
        if (scale < .9F || scale > 1F) {
            scaler.setScale(scale, scale);
        } else {
            scaler = null;
        }
    }

    Bitmap b1;
    if (scaler != null) {
        // this is used for minithumb and crop, so we want to filter here.
        b1 = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), scaler, true);
    } else {
        b1 = source;
    }

    if (recycle && b1 != source) {
        source.recycle();
    }

    int dx1 = Math.max(0, b1.getWidth() - targetWidth);
    //        int dy1 = Math.max(0, b1.getHeight() - targetHeight);

    Bitmap b2 = Bitmap.createBitmap(b1, dx1 / 2, 0, //dy1 / 2,
            targetWidth, targetHeight);

    if (b2 != b1) {
        if (recycle || b1 != source) {
            b1.recycle();
        }
    }

    return b2;
}