package jp.wasabeef.picasso.transformations;

/**
 * Copyright (C) 2015 Wasabeef
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import com.squareup.picasso.Transformation;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.RectF;

public class CropTransformation implements Transformation {

    private int mWidth;
    private int mHeight;
    private CropType mCropType;

    public CropTransformation() {
        mCropType = CropType.CENTER;
    }

    public CropTransformation(int width, int height) {
        this();
        mWidth = width;
        mHeight = height;
    }
    
    public CropTransformation(int width, int height, CropType cropType) {
		mWidth = width;
		mHeight = height;
		mCropType = cropType;
	}

    @Override
    public Bitmap transform(Bitmap source) {
        if (mWidth == 0) {
            mWidth = source.getWidth();
        }
        if (mHeight == 0) {
            mHeight = source.getHeight();
        }

        float scaleX = (float) mWidth / source.getWidth();
        float scaleY = (float) mHeight / source.getHeight();
        float scale = Math.max(scaleX, scaleY);

        float scaledWidth = scale * source.getWidth();
        float scaledHeight = scale * source.getHeight();
        float left = (mWidth - scaledWidth) / 2;
        float top = getTop(scaledHeight);
        RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);

        Bitmap bitmap = Bitmap.createBitmap(mWidth, mHeight, source.getConfig());
        Canvas canvas = new Canvas(bitmap);
        canvas.drawBitmap(source, null, targetRect, null);
        source.recycle();

        return bitmap;
    }

    @Override
    public String key() {
        return "CropTransformation(width=" + mWidth + ", height=" + mHeight + ")";
    }

    private float getTop(float scaledHeight) {
        switch (mCropType) {
		case TOP:
			return 0;
		case CENTER:
			return (mHeight - scaledHeight) / 2;
		case BOTTOM:
			return mHeight - scaledHeight;
		default:
			return 0;
	}
    }

    public enum CropType {
		TOP,
		CENTER,
		BOTTOM
	}
}

package jp.wasabeef.picasso.transformations;

/**
 * Copyright (C) 2015 Wasabeef
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import com.squareup.picasso.Transformation;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.RectF;

public class CropTransformation implements Transformation {

    private int mWidth;
    private int mHeight;
    private CropType mCropType;

    public CropTransformation() {
        mCropType = CropType.CENTER;
    }

    public CropTransformation(int width, int height) {
        this();
        mWidth = width;
        mHeight = height;
    }
    
    public CropTransformation(int width, int height, CropType cropType) {
		mWidth = width;
		mHeight = height;
		mCropType = cropType;
	}

    @Override
    public Bitmap transform(Bitmap source) {
        if (mWidth == 0) {
            mWidth = source.getWidth();
        }
        if (mHeight == 0) {
            mHeight = source.getHeight();
        }

        float scaleX = (float) mWidth / source.getWidth();
        float scaleY = (float) mHeight / source.getHeight();
        float scale = Math.max(scaleX, scaleY);

        float scaledWidth = scale * source.getWidth();
        float scaledHeight = scale * source.getHeight();
        float left = (mWidth - scaledWidth) / 2;
        float top = getTop(scaledHeight);
        RectF targetRect = new RectF(left, top, left + scaledWidth, top + scaledHeight);

        Bitmap bitmap = Bitmap.createBitmap(mWidth, mHeight, source.getConfig());
        Canvas canvas = new Canvas(bitmap);
        canvas.drawBitmap(source, null, targetRect, null);
        source.recycle();

        return bitmap;
    }

    @Override
    public String key() {
        return "CropTransformation(width=" + mWidth + ", height=" + mHeight + ")";
    }

    private float getTop(float scaledHeight) {
        switch (mCropType) {
		case TOP:
			return 0;
		case CENTER:
			return (mHeight - scaledHeight) / 2;
		case BOTTOM:
			return mHeight - scaledHeight;
		default:
			return 0;
	    }
    }

    public enum CropType {
		TOP,
		CENTER,
		BOTTOM
	}
}

Update CropTransformation.java