package?com.han.demo;

import?java.awt.Graphics2D;
import?java.awt.geom.AffineTransform;
import?java.awt.image.BufferedImage;

import?com.google.zxing.LuminanceSource;

public?class?BufferedImageLuminanceSource?extends?LuminanceSource?{

	private?final?BufferedImage?image;
	private?final?int?left;
	private?final?int?top;

	public?BufferedImageLuminanceSource（BufferedImage?image）?{
		this（image?0?0?image.getWidth（）?image.getHeight（））;
	}

	public?BufferedImageLuminanceSource（BufferedImage?image?int?left?int?top
			int?width?int?height）?{
		super（width?height）;

		int?sourceWidth?=?image.getWidth（）;
		int?sourceHeight?=?image.getHeight（）;
		if?（left?+?width?>?sourceWidth?||?top?+?height?>?sourceHeight）?{
			throw?new?IllegalArgumentException（
					“Crop?rectangle?does?not?fit?within?image?data.“）;
		}

		for?（int?y?=?top;?y?			for?（int?x?=?left;?x?				if?（（image.getRGB（x?y）?&?0xFF000000）?==?0）?{
					image.setRGB（x?y?0xFFFFFFFF）;?//?=?white
				}
			}
		}

		this.image?=?new?BufferedImage（sourceWidth?sourceHeight
				BufferedImage.TYPE_BYTE_GRAY）;
		this.image.getGraphics（）.drawImage（image?0?0?null）;
		this.left?=?left;
		this.top?=?top;
	}

	@Override
	public?byte[]?getRow（int?y?byte[]?row）?{
		if?（y?=?getHeight（））?{
			throw?new?IllegalArgumentException（
					“Requested?row?is?outside?the?image:?“?+?y）;
		}
		int?width?=?getWidth（）;
		if?（row?==?null?||?row.length?			row?=?new?byte[width];
		}
		image.getRaster（）.getDataElements（left?top?+?y?width?1?row）;
		return?row;
	}

	@Override
	public?byte[]?getMatrix（）?{
		int?width?=?getWidth（）;
		int?height?=?getHeight（）;
		int?area?=?width?*?height;
		byte[]?matrix?=?new?byte[area];
		image.getRaster（）.getDataElements（left?top?width?height?matrix）;
		return?matrix;
	}

	@Override
	public?boolean?isCropSupported（）?{
		return?true;
	}

	@Override
	public?LuminanceSource?crop（int?left?int?top?int?width?int?height）?{
		return?new?BufferedImageLuminanceSource（image?this.left?+?left
				this.top?+?top?width?height）;
	}

	@Override
	public?boolean?isRotateSupported（）?{
		return?true;
	}

	@Override
	public?LuminanceSource?rotateCounterClockwise（）?{

		int?sourceWidth?=?image.getWidth（）;
		int?sourceHeight?=?image.getHeight（）;

		AffineTransform?transform?=?new?AffineTransform（0.0?-1.0?1.0?0.0
				0.0?sourceWidth）;

		BufferedImage?rotatedImage?=?new?BufferedImage（sourceHeight
				sourceWidth?BufferedImage.TYPE_BYTE_GRAY）;

		Graphics2D?g?=?rotatedImage.createGraphics（）;
		g.drawImage（image?transform?null）;
		g.dispose（）;

		int?width?=?getWidth（）;
		return?new?BufferedImageLuminanceSource（rotatedImage?top?sourceWidth
				-?（left?+?width）?getHeight（）?width）;
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????1038000??2016-02-22?16:26??Qrcode_swetake.jar

?????文件????????532??2016-02-22?15:06??demo\.classpath

?????文件????????380??2016-02-22?16:29??demo\.project

?????文件????????598??2016-02-22?14:12??demo\.settings\org.eclipse.jdt.core.prefs

?????文件???????3305??2016-02-22?16:29??demo\bin\com\han\demo\BufferedImageLuminanceSource.class

?????文件???????2218??2016-02-22?16:29??demo\bin\com\han\demo\MatrixToImageWriter.class

?????文件???????1772??2016-02-22?16:29??demo\bin\com\han\demo\MyTest.class

?????文件?????538421??2016-02-22?14:59??demo\lib\core-3.1.0.jar

?????文件???????2867??2016-02-22?15:22??demo\src\com\han\demo\BufferedImageLuminanceSource.java

?????文件???????1524??2016-02-22?15:25??demo\src\com\han\demo\MatrixToImageWriter.java

?????文件???????1021??2016-02-22?16:28??demo\src\com\han\demo\MyTest.java

?????文件?????538421??2016-02-22?11:40??core-3.1.0.jar

?????文件?????457507??2016-02-22?11:40??core-3.1.0-sources.jar

?????目錄??????????0??2016-02-22?16:29??demo\bin\com\han\demo

?????目錄??????????0??2016-02-22?16:29??demo\src\com\han\demo

?????目錄??????????0??2016-02-22?16:29??demo\bin\com\han

?????目錄??????????0??2016-02-22?16:29??demo\src\com\han

?????目錄??????????0??2016-02-22?16:29??demo\bin\com

?????目錄??????????0??2016-02-22?16:29??demo\src\com

?????目錄??????????0??2016-02-22?16:29??demo\.settings

?????目錄??????????0??2016-02-22?16:29??demo\bin

?????目錄??????????0??2016-02-22?16:29??demo\lib

?????目錄??????????0??2016-02-22?16:29??demo\src

?????目錄??????????0??2016-02-22?16:29??demo

-----------?---------??----------?-----??----

??????????????2586566????????????????????24