package?com.popo.tools;

import?java.awt.Color;
import?java.awt.Graphics;
import?java.awt.Image;
import?java.awt.image.BufferedImage;
import?java.io.File;
import?java.io.FileOutputStream;

import?javax.imageio.ImageIO;

import?com.sun.image.codec.jpeg.JPEGCodec;
import?com.sun.image.codec.jpeg.JPEGEncodeParam;
import?com.sun.image.codec.jpeg.JPEGImageEncoder;

public?class?PicUtil?{

	/**
	?*?圖片馬賽克化
	?*?
	?*?@param?inputFile
	?*????????????輸入圖片路徑
	?*?@param?outputFile
	?*????????????輸出圖片路徑
	?*?@param?mosaicSize
	?*????????????馬賽克大小
	?*?@return
	?*?@throws?Exception
	?*?@author?changqing/2012-12-11/2012
	?*/
	public?static?boolean?mosaic（String?inputFile?String?outputFile?int?mosaicSize）?throws?Exception?{
		//?獲得源文件
		File?file?=?new?File（inputFile）;
		if?（!file.exists（））?{
			return?false;
		}
		BufferedImage?img?=?ImageIO.read（file）;
		return?mosaic（img?outputFile?mosaicSize）;
	}

	/**
	?*?圖片馬賽克化
	?*?
	?*?@param?img
	?*?@param?outputFile
	?*?@param?mosaicSize
	?*?@return
	?*?@throws?Exception
	?*?@author?changqing/2012-12-11/2012
	?*/
	private?static?boolean?mosaic（BufferedImage?img?String?outputFile?int?mosaicSize）?throws?Exception?{
		//?判斷圖片格式是否正確
		if?（img?==?null）?{
			return?false;
		}
		int?imageWidth?=?img.getWidth（null）;
		int?imageHeight?=?img.getHeight（null）;
		//?判斷馬賽克大小是否超出圖片范圍
		if?（mosaicSize?<=?0?||?mosaicSize?>?imageWidth?||?imageWidth?>?imageHeight）?{
			return?false;
		}

		BufferedImage?mosaicPic?=?new?BufferedImage（imageWidth?imageHeight?BufferedImage.TYPE_INT_RGB）;

		int?x?=?0;//?矩形繪制點的x坐標
		int?y?=?0;?//?矩形繪制點的y坐標
		int?xCnt?=?0;//?矩形繪制x方向個數
		int?yCnt?=?0;//?矩形繪制y方向個數
		if?（imageWidth?%?mosaicSize?==?0）?{
			xCnt?=?imageWidth?/?mosaicSize;
		}?else?{
			xCnt?=?imageWidth?/?mosaicSize?+?1;
		}
		if?（imageHeight?%?mosaicSize?==?0）?{
			yCnt?=?imageHeight?/?mosaicSize;
		}?else?{
			yCnt?=?imageHeight?/?mosaicSize?+?1;
		}

		//?繪制矩形并填充顏色
		Graphics?gs?=?mosaicPic.getGraphics（）;
		for?（int?i?=?0;?i?			for?（int?j?=?0;?j?				//?計算矩形寬高
				int?mosaicWidth?=?mosaicSize;
				int?mosaicHeight?=?mosaicSize;
				if?（i?==?xCnt?-?1）?{
					mosaicWidth?=?imageWidth?-?x;
				}
				if?（j?==?yCnt?-?1）?{
					mosaicHeight?=?imageHeight?-?y;
				}
				//?矩形顏色取中心像素點RGB值
				int?centerX?=?x;
				int?centerY?=?y;
				if?（mosaicWidth?%?2?==?0）?{
					centerX?+=?mosaicWidth?/?2;
				}?else?{
					centerX?+=?（mosaicWidth?-?1）?/?2;
				}
				if?（mosaicHeight?%?2?==?0）?{
					centerY?+=?mosaicHeight?/?2;
				}?else?{
					centerY?+=?（mosaicHeight?-?1）?/?2;
				}
				Color?color?=?new?Color（img.getRGB（centerX?centerY））;
				gs.setColor（color）;
				gs.fillRect（x?y?mosaicWidth?mosaicHeight）;
				y?=?y?+?mosaicSize;//?計算下一個矩形的y坐標
			}
			y?=?0;//?還原y坐標
			x?=?x?+?mosaicSize;//?計算x坐標
		}
		gs.dispose（）;

		//?輸出圖片
		output（mosaicPic?outputFile?imageWidth?imageHeight）;

		return?true;
	}

?屬性????????????大小?????日期????時間???名稱
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?????文件???????4031??2012-12-11?17:50??src\com\popo\tools\PicUtil.java

?????目錄??????????0??2012-12-11?17:31??src\com\popo\tools

?????目錄??????????0??2012-12-11?17:31??src\com\popo

?????目錄??????????0??2012-12-11?17:31??src\com

?????目錄??????????0??2012-12-11?17:30??src

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?????????????????4031????????????????????5