/*
* 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;
}
}