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java.lang.Object | +--ach.image.bmp.BmpImageProducer
BmpImageProducer.java
Copyright (c) 1997, 1998 Helge Hackbarth, All Rights Reserved.
Provides an image producer for BMP images (Windows and OS/2 style).
Supports color depths of 1, 4, 8 and 24 bit. Image can be loaded
asynchronously as separate thread or synchronously in conjunction
with an EMemImageSource which will be faster for images with less
than 8 bits per pixel as packed data are stored without conversion.
THE AUTHOR MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY
OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, OR NON-INFRINGEMENT. THE AUTHOR SHALL NOT BE LIABLE FOR ANY
DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
Constructor Summary | |
BmpImageProducer(java.lang.String name)
Constructor for BmpImageProducer called by getImageProducer() |
|
BmpImageProducer(java.net.URL context,
java.lang.String name)
Constructor for BmpImageProducer called by getImageProducer() |
Method Summary | |
void |
addConsumer(java.awt.image.ImageConsumer ic)
Adds an ImageConsumer to the list of consumers interested in data for this image. |
java.awt.image.ImageProducer |
extractImage(java.io.DataInputStream is)
Given an input stream, create an ImageProducer from the BMP info contained in the stream. |
java.lang.String |
getErrorMsg()
If image production completed with an error status the error message can be requested with this method. |
static java.awt.image.ImageProducer |
getImageProducer(java.lang.String name)
Retrieve an ImageProducer for a BMP. |
static java.awt.image.ImageProducer |
getImageProducer(java.net.URL context)
Retrieve an ImageProducer given just a BMP URL. |
static java.awt.image.ImageProducer |
getImageProducer(java.net.URL context,
java.lang.String name)
Retrieve an ImageProducer for a BMP URL. |
boolean |
isConsumer(java.awt.image.ImageConsumer ic)
Determine if an ImageConsumer is on the list of consumers currently interested in data for this image. |
void |
removeConsumer(java.awt.image.ImageConsumer ic)
Remove an ImageConsumer from the list of consumers interested in data for this image. |
void |
requestTopDownLeftRightResend(java.awt.image.ImageConsumer ic)
Requests that a given ImageConsumer have the image data delivered * one more time in top-down, left-right order. |
void |
run()
The BmpImageProducer is automatically started as separate thread when startProduction was called for an image consumer. |
void |
startProduction(java.awt.image.ImageConsumer ic)
Adds an ImageConsumer to the list of consumers interested in data for this image, and immediately start delivery of the image data through the ImageConsumer interface. |
java.lang.String |
toString()
Describe the image as a string |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
public BmpImageProducer(java.lang.String name)
name
- local file name of imagepublic BmpImageProducer(java.net.URL context, java.lang.String name)
URL
- context of image URLname
- name of image file (to be appended to URL)Method Detail |
public java.awt.image.ImageProducer extractImage(java.io.DataInputStream is) throws java.awt.AWTException
is
- contains the input stream to usejava.awt.AWTException
- on stream or bitmap data errorspublic java.lang.String toString()
toString
in class java.lang.Object
public static java.awt.image.ImageProducer getImageProducer(java.lang.String name) throws java.awt.AWTException
name
- contains the file name.java.awt.AWTException
- on stream or bitmap data errorspublic static java.awt.image.ImageProducer getImageProducer(java.net.URL context, java.lang.String name) throws java.awt.AWTException
context
- contains the base URL (from getCodeBase() or such)name
- contains the file name.java.awt.AWTException
- on stream or bitmap data errorspublic static java.awt.image.ImageProducer getImageProducer(java.net.URL context) throws java.awt.AWTException
context
- contains the base URL (from getCodeBase() or such)java.awt.AWTException
- on stream or bitmap data errorspublic void addConsumer(java.awt.image.ImageConsumer ic)
addConsumer
in interface java.awt.image.ImageProducer
ImageConsumer
public void run()
run
in interface java.lang.Runnable
public boolean isConsumer(java.awt.image.ImageConsumer ic)
isConsumer
in interface java.awt.image.ImageProducer
ImageConsumer
public void removeConsumer(java.awt.image.ImageConsumer ic)
removeConsumer
in interface java.awt.image.ImageProducer
ImageConsumer
public void startProduction(java.awt.image.ImageConsumer ic)
startProduction
in interface java.awt.image.ImageProducer
ImageConsumer
public void requestTopDownLeftRightResend(java.awt.image.ImageConsumer ic)
requestTopDownLeftRightResend
in interface java.awt.image.ImageProducer
public java.lang.String getErrorMsg()
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