Android Bitmap Crop cutImg(Bitmap bitmap, int newWidth, int newHeight)

Description

cut Img

License

Apache License

Declaration

public static Bitmap cutImg(Bitmap bitmap, int newWidth, int newHeight) 

Method Source Code

/*//from   ww w  . j a  v a 2 s. c o m
 * Copyright (C) 2013 www.418log.org
 * 
 * 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:
 *
 * 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 java.io.File;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

public class Main {

    public static Bitmap cutImg(File file, int newWidth, int newHeight) {
        Bitmap resizeBmp = null;
        if (newWidth <= 0 || newHeight <= 0) {
            throw new IllegalArgumentException(
                    "????????????????0");
        }

        BitmapFactory.Options opts = new BitmapFactory.Options();
        
        opts.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(file.getPath(), opts);
        
        
        int srcWidth = opts.outWidth; 
        int srcHeight = opts.outHeight;
        int destWidth = 0;
        int destHeight = 0;

        int cutSrcWidth = newWidth * 2;
        int cutSrcHeight = newHeight * 2;

        
        double ratio = 0.0;
        
        if (srcWidth < cutSrcWidth || srcHeight < cutSrcHeight) {
            ratio = 0.0;
            destWidth = srcWidth;
            destHeight = srcHeight;
        } else if (srcWidth > cutSrcWidth) {
            ratio = (double) srcWidth / cutSrcWidth;
            destWidth = cutSrcWidth;
            destHeight = (int) (srcHeight / ratio);
        } else if (srcHeight > cutSrcHeight) {
            ratio = (double) srcHeight / cutSrcHeight;
            destHeight = cutSrcHeight;
            destWidth = (int) (srcWidth / ratio);
        }

        
        opts.inPreferredConfig = Bitmap.Config.RGB_565;
        
        
        opts.inPurgeable = true;
        
        opts.inInputShareable = true;
        
        if (ratio > 1) {
            opts.inSampleSize = (int) ratio;
        } else {
            opts.inSampleSize = 1;
        }
        
        opts.outHeight = destHeight;
        opts.outWidth = destWidth;
        
        opts.inJustDecodeBounds = false;
        
        opts.inDither = false;
        Bitmap bitmap = BitmapFactory.decodeFile(file.getPath(), opts);
        if (bitmap != null) {
            resizeBmp = cutImg(bitmap, newWidth, newHeight);
        }
        return resizeBmp;
    }

    public static Bitmap cutImg(Bitmap bitmap, int newWidth, int newHeight) {
        if (bitmap == null) {
            return null;
        }

        if (newWidth <= 0 || newHeight <= 0) {
            throw new IllegalArgumentException(
                    "????????????????0");
        }

        Bitmap resizeBmp = null;

        try {
            int width = bitmap.getWidth();
            int height = bitmap.getHeight();

            if (width <= 0 || height <= 0) {
                return null;
            }
            int offsetX = 0;
            int offsetY = 0;

            if (width > newWidth) {
                offsetX = (width - newWidth) / 2;
            } else {
                newWidth = width;
            }

            if (height > newHeight) {
                offsetY = (height - newHeight) / 2;
            } else {
                newHeight = height;
            }

            resizeBmp = Bitmap.createBitmap(bitmap, offsetX, offsetY,
                    newWidth, newHeight);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (resizeBmp != bitmap) {
                bitmap.recycle();
            }
        }
        return resizeBmp;
    }
}

Related

1. getTrimmedRight(Bitmap img, int border)
2. getTrimmedTop(Bitmap img)
3. getTrimmedTop(Bitmap img, int border)
4. cutImg(File file, int newWidth, int newHeight)
5. cutStretchImage(Bitmap image, int xsize, int ysize)
6. cropCenter(Bitmap bitmap, boolean recycle)
7. cropCenterBitmap(Bitmap bitmap, int newWidth, int newHeight)
8. resizeDownAndCropCenter(Bitmap bitmap, int size, boolean recycle)
9. resizeDownIfTooBig(Bitmap bitmap, int targetSize, boolean recycle)