package?test;

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

import?com.google.zxing.LuminanceSource;

public?final?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）;
				}
			}
		}
		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????????2795??2019-02-20?09:16??BufferedImageLuminanceSource.java
?????文件??????543115??2019-02-20?08:54??core-3.3.3.jar
?????文件??????477658??2019-02-20?16:45??fastjson-1.2.33.jar
?????文件????????4766??2019-03-26?19:48??MyQRCode.java
?????文件?????????436??2019-03-26?19:56??readme.txt