org.krysalis.barcode4j.output.bitmap

Class BitmapCanvasProvider

java.lang.Object

org.krysalis.barcode4j.output.AbstractCanvasProvider

org.krysalis.barcode4j.output.bitmap.BitmapCanvasProvider

All Implemented Interfaces:

CanvasProvider

public class BitmapCanvasProvider
extends AbstractCanvasProvider

CanvasProvider implementation for generating bitmaps. This class wraps Java2DCanvasProvider to do the actual rendering.

Version:

$Id: BitmapCanvasProvider.java,v 1.4 2008-05-13 13:00:46 jmaerki Exp $

Author:

Jeremias Maerki

Field Summary

Fields inherited from class org.krysalis.barcode4j.output.AbstractCanvasProvider

bardim

Constructor Summary

Constructors

Constructor and Description
BitmapCanvasProvider(int resolution, int imageType, boolean antiAlias, int orientation) Creates a new BitmapCanvasProvider.
BitmapCanvasProvider(OutputStream out, String mime, int resolution, int imageType, boolean antiAlias, int orientation) Creates a new BitmapCanvasProvider.

Method Summary

Modifier and Type	Method and Description
void	deviceFillRect(double x, double y, double w, double h) Paints a filled rectangle.
void	deviceText(String text, double x1, double x2, double y1, String fontName, double fontSize, TextAlignment textAlign) Draws text.
void	establishDimensions(BarcodeDimension dim) Sets the dimensions of the barcode.
void	finish() Call this method to finish any pending operations after the BarcodeGenerator has finished its work.
BufferedImage	getBufferedImage() Returns the buffered image that is used to paint the barcode on.

Methods inherited from class org.krysalis.barcode4j.output.AbstractCanvasProvider

deviceCenteredText, deviceJustifiedText, getDimensions, getOrientation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BitmapCanvasProvider

public BitmapCanvasProvider(OutputStream out,
                            String mime,
                            int resolution,
                            int imageType,
                            boolean antiAlias,
                            int orientation)

Creates a new BitmapCanvasProvider.

Parameters:

out - OutputStream to write to

mime - MIME type of the desired output format (ex. "image/png")

resolution - the desired image resolution (dots per inch)

imageType - the desired image type (Values: BufferedImage.TYPE_*)

antiAlias - true if anti-aliasing should be enabled

orientation - Orientation must be 0, 90, 180, 270, -90, -180 or -270

See Also:

BarcodeDimension.normalizeOrientation(int)

BitmapCanvasProvider

public BitmapCanvasProvider(int resolution,
                            int imageType,
                            boolean antiAlias,
                            int orientation)

Creates a new BitmapCanvasProvider.

Parameters:

resolution - the desired image resolution (dots per inch)

imageType - the desired image type (Values: BufferedImage.TYPE_*)

antiAlias - true if anti-aliasing should be enabled

orientation - Orientation must be 0, 90, 180, 270, -90, -180 or -270

See Also:

BarcodeDimension.normalizeOrientation(int)

Method Detail

finish

public void finish()
            throws IOException

Call this method to finish any pending operations after the BarcodeGenerator has finished its work.

Throws:

IOException - in case of an I/O problem

getBufferedImage

public BufferedImage getBufferedImage()

Returns the buffered image that is used to paint the barcode on.

Returns:

the image.

establishDimensions

public void establishDimensions(BarcodeDimension dim)

Sets the dimensions of the barcode.

Specified by:

establishDimensions in interface CanvasProvider

Overrides:

establishDimensions in class AbstractCanvasProvider

Parameters:

dim - the dimensions of the barcode

deviceFillRect

public void deviceFillRect(double x,
                           double y,
                           double w,
                           double h)

Paints a filled rectangle.

Parameters:

x - x coordinate of the upper left corner

y - y coordinate of the upper left corner

w - the width

h - the height

deviceText

public void deviceText(String text,
                       double x1,
                       double x2,
                       double y1,
                       String fontName,
                       double fontSize,
                       TextAlignment textAlign)

Draws text.

Parameters:

text - the text to draw

x1 - the left boundary

x2 - the right boundary

y1 - the y coordinate

fontName - the name of the font

fontSize - the size of the font

textAlign - the text alignment