Fit Image No Margin : Image « 2D Graphics « Android

1. Android
2. 2D Graphics
3. Image

Fit Image No Margin

   
/*
 * Copyright (C) 2008-2010 aki@akjava.com
 *
 * 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.
 */

//package com.akjava.lib.android.image;



import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory.Options;
import android.util.Log;

/**
 * 
 * @author aki
 * @version 1.0
 * ?????????????
 * ????????????????
 *
 */
 class ImageUtils {
  public static final String[] imageExtensions={"jpg","png","jpeg","gif"};
  
  private ImageUtils(){}

  /**
   * ????????????????????????????????????????
   * ????????????????
   * 
   * @param baseImage ???
   * @param width ??
   * @param height ??
   * @return  ?????????????????
   */
  public static Bitmap fitImageNoMargin(Bitmap baseImage,int width,int height){
    
    Point pt=calculateFitImage(baseImage,width,height,null);//TODO gc free
    Bitmap resizedBitmap = Bitmap.createScaledBitmap(baseImage,
        pt.x, pt.y, true); 
    return resizedBitmap;
  }
  
  /**
   * ????????????????????????????
   * 
   * @param baseImage
   * @param width
   * @param height
   * @param receiver
   * @return
   */
  public static Point calculateFitImage(Bitmap baseImage,int width,int height,Point receiver){
    if(baseImage==null){
      throw new RuntimeException("baseImage is null");
    }
    if(receiver==null){
      receiver=new Point();
    }
    int dw=width;
    int dh=height;
    
    
    if(dw!=0 && dh!=0 ){
      double waspect=(double)dw/baseImage.getWidth();
      double haspect=(double)dh/baseImage.getHeight();
      if(waspect>haspect){//fit h
        dw=(int) (baseImage.getWidth()*haspect);
        
      }else{
        dh=(int)(baseImage.getHeight()*waspect);
      }
    }
    receiver.x=dw;
    receiver.y=dh;
    return receiver;
  }
}

   
    
    
  

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