How to use

getRequiredRotation

method

in

com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView

/**
 * Returns the actual orientation of the image relative to the source file. This will be based on the source file's
 * EXIF orientation if you're using ORIENTATION_USE_EXIF. Values are 0, 90, 180, 270.
 * @return the orientation applied after EXIF information has been extracted. See static fields.
 */
public final int getAppliedOrientation() {
  return getRequiredRotation();
}

/**
 * Get source width taking rotation into account.
 */
@SuppressWarnings("SuspiciousNameCombination")
private int sWidth() {
  int rotation = getRequiredRotation();
  if (rotation == 90 || rotation == 270) {
    return sHeight;
  } else {
    return sWidth;
  }
}

/**
 * Get source height taking rotation into account.
 */
@SuppressWarnings("SuspiciousNameCombination")
private int sHeight() {
  int rotation = getRequiredRotation();
  if (rotation == 90 || rotation == 270) {
    return sWidth;
  } else {
    return sHeight;
  }
}

/**
 * Converts source rectangle from tile, which treats the image file as if it were in the correct orientation already,
 * to the rectangle of the image that needs to be loaded.
 */
@SuppressWarnings("SuspiciousNameCombination")
@AnyThread
private void fileSRect(Rect sRect, Rect target) {
  if (getRequiredRotation() == 0) {
    target.set(sRect);
  } else if (getRequiredRotation() == 90) {
    target.set(sRect.top, sHeight - sRect.right, sRect.bottom, sHeight - sRect.left);
  } else if (getRequiredRotation() == 180) {
    target.set(sWidth - sRect.right, sHeight - sRect.bottom, sWidth - sRect.left, sHeight - sRect.top);
  } else {
    target.set(sWidth - sRect.bottom, sRect.left, sWidth - sRect.top, sRect.right);
  }
}

        matrix.reset();
        setMatrixArray(srcArray, 0, 0, tile.bitmap.getWidth(), 0, tile.bitmap.getWidth(), tile.bitmap.getHeight(), 0, tile.bitmap.getHeight());
        if (getRequiredRotation() == ORIENTATION_0) {
          setMatrixArray(dstArray, tile.vRect.left, tile.vRect.top, tile.vRect.right, tile.vRect.top, tile.vRect.right, tile.vRect.bottom, tile.vRect.left, tile.vRect.bottom);
        } else if (getRequiredRotation() == ORIENTATION_90) {
          setMatrixArray(dstArray, tile.vRect.right, tile.vRect.top, tile.vRect.right, tile.vRect.bottom, tile.vRect.left, tile.vRect.bottom, tile.vRect.left, tile.vRect.top);
        } else if (getRequiredRotation() == ORIENTATION_180) {
          setMatrixArray(dstArray, tile.vRect.right, tile.vRect.bottom, tile.vRect.left, tile.vRect.bottom, tile.vRect.left, tile.vRect.top, tile.vRect.right, tile.vRect.top);
        } else if (getRequiredRotation() == ORIENTATION_270) {
          setMatrixArray(dstArray, tile.vRect.left, tile.vRect.bottom, tile.vRect.left, tile.vRect.top, tile.vRect.right, tile.vRect.top, tile.vRect.right, tile.vRect.bottom);
matrix.reset();
matrix.postScale(xScale, yScale);
matrix.postRotate(getRequiredRotation());
matrix.postTranslate(vTranslate.x, vTranslate.y);
if (getRequiredRotation() == ORIENTATION_180) {
  matrix.postTranslate(scale * sWidth, scale * sHeight);
} else if (getRequiredRotation() == ORIENTATION_90) {
  matrix.postTranslate(scale * sHeight, 0);
} else if (getRequiredRotation() == ORIENTATION_270) {
  matrix.postTranslate(0, scale * sWidth);

/**
 * Get source width taking rotation into account.
 */
@SuppressWarnings("SuspiciousNameCombination")
private int sWidth() {
  int rotation = getRequiredRotation();
  if (rotation == 90 || rotation == 270) {
    return sHeight;
  } else {
    return sWidth;
  }
}

/**
 * Get source height taking rotation into account.
 */
@SuppressWarnings("SuspiciousNameCombination")
private int sHeight() {
  int rotation = getRequiredRotation();
  if (rotation == 90 || rotation == 270) {
    return sWidth;
  } else {
    return sHeight;
  }
}

/**
 * Returns the actual orientation of the image relative to the source file. This will be based on the source file's
 * EXIF orientation if you're using ORIENTATION_USE_EXIF. Values are 0, 90, 180, 270.
 */
public final int getAppliedOrientation() {
  return getRequiredRotation();
}

/**
 * Converts source rectangle from tile, which treats the image file as if it were in the correct orientation already,
 * to the rectangle of the image that needs to be loaded.
 */
@SuppressWarnings("SuspiciousNameCombination")
@AnyThread
private void fileSRect(Rect sRect, Rect target) {
  if (getRequiredRotation() == 0) {
    target.set(sRect);
  } else if (getRequiredRotation() == 90) {
    target.set(sRect.top, sHeight - sRect.right, sRect.bottom, sHeight - sRect.left);
  } else if (getRequiredRotation() == 180) {
    target.set(sWidth - sRect.right, sHeight - sRect.bottom, sWidth - sRect.left, sHeight - sRect.top);
  } else {
    target.set(sWidth - sRect.bottom, sRect.left, sWidth - sRect.top, sRect.right);
  }
}

        matrix.reset();
        setMatrixArray(srcArray, 0, 0, tile.bitmap.getWidth(), 0, tile.bitmap.getWidth(), tile.bitmap.getHeight(), 0, tile.bitmap.getHeight());
        if (getRequiredRotation() == ORIENTATION_0) {
          setMatrixArray(dstArray, tile.vRect.left, tile.vRect.top, tile.vRect.right, tile.vRect.top, tile.vRect.right, tile.vRect.bottom, tile.vRect.left, tile.vRect.bottom);
        } else if (getRequiredRotation() == ORIENTATION_90) {
          setMatrixArray(dstArray, tile.vRect.right, tile.vRect.top, tile.vRect.right, tile.vRect.bottom, tile.vRect.left, tile.vRect.bottom, tile.vRect.left, tile.vRect.top);
        } else if (getRequiredRotation() == ORIENTATION_180) {
          setMatrixArray(dstArray, tile.vRect.right, tile.vRect.bottom, tile.vRect.left, tile.vRect.bottom, tile.vRect.left, tile.vRect.top, tile.vRect.right, tile.vRect.top);
        } else if (getRequiredRotation() == ORIENTATION_270) {
          setMatrixArray(dstArray, tile.vRect.left, tile.vRect.bottom, tile.vRect.left, tile.vRect.top, tile.vRect.right, tile.vRect.top, tile.vRect.right, tile.vRect.bottom);
matrix.reset();
matrix.postScale(xScale, yScale);
matrix.postRotate(getRequiredRotation());
matrix.postTranslate(vTranslate.x, vTranslate.y);
if (getRequiredRotation() == ORIENTATION_180) {
  matrix.postTranslate(scale * sWidth, scale * sHeight);
} else if (getRequiredRotation() == ORIENTATION_90) {
  matrix.postTranslate(scale * sHeight, 0);
} else if (getRequiredRotation() == ORIENTATION_270) {
  matrix.postTranslate(0, scale * sWidth);