Package org.eclipse.swt.dnd

Class ImageTransfer

java.lang.Object

org.eclipse.swt.dnd.Transfer

org.eclipse.swt.dnd.ByteArrayTransfer

org.eclipse.swt.dnd.ImageTransfer

public class ImageTransfer
extends ByteArrayTransfer

The class ImageTransfer provides a platform specific mechanism for converting an Image represented as a java ImageData to a platform specific representation of the data and vice versa.

An example of a java ImageData is shown below:

     Image image = new Image(display, "C:\temp\img1.gif");
           ImageData imgData = image.getImageData();
 

Since:

1.3

See Also:

• Transfer

Method Summary

Modifier and Type	Method	Description
static ImageTransfer	getInstance()	Returns the singleton instance of the ImageTransfer class.
protected int[]	getTypeIds()	Returns the platform specific ids of the data types that can be converted using this transfer agent.
protected String[]	getTypeNames()	Returns the platform specific names of the data types that can be converted using this transfer agent.
void	javaToNative(Object object, TransferData transferData)	This implementation of javaToNative converts an ImageData object represented by java ImageData to a platform specific representation.
Object	nativeToJava(TransferData transferData)	This implementation of nativeToJava converts a platform specific representation of an image to java ImageData.
protected boolean	validate(Object object)	Test that the object is of the correct format for this Transfer class.

Methods inherited from class org.eclipse.swt.dnd.ByteArrayTransfer

getSupportedTypes, isSupportedType

Methods inherited from class org.eclipse.swt.dnd.Transfer

registerType

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static ImageTransfer getInstance()

Returns the singleton instance of the ImageTransfer class.

Returns:

the singleton instance of the ImageTransfer class

javaToNative

public void javaToNative(Object object,
 TransferData transferData)

This implementation of javaToNative converts an ImageData object represented by java ImageData to a platform specific representation.

Overrides:

javaToNative in class ByteArrayTransfer

Parameters:

object - a java ImageData containing the ImageData to be converted

transferData - an empty TransferData object that will be filled in on return with the platform specific format of the data

See Also:

• Transfer.nativeToJava(org.eclipse.swt.dnd.TransferData)

nativeToJava

public Object nativeToJava(TransferData transferData)

This implementation of nativeToJava converts a platform specific representation of an image to java ImageData.

Overrides:

nativeToJava in class ByteArrayTransfer

Parameters:

transferData - the platform specific representation of the data to be converted

Returns:

a java ImageData of the image if the conversion was successful; otherwise null

See Also:

• Transfer.javaToNative(java.lang.Object, org.eclipse.swt.dnd.TransferData)

getTypeIds

protected int[] getTypeIds()

Description copied from class: Transfer

Returns the platform specific ids of the data types that can be converted using this transfer agent.

Specified by:

getTypeIds in class Transfer

Returns:

the platform specific ids of the data types that can be converted using this transfer agent

getTypeNames

protected String[] getTypeNames()

Description copied from class: Transfer

Returns the platform specific names of the data types that can be converted using this transfer agent.

Specified by:

getTypeNames in class Transfer

Returns:

the platform specific names of the data types that can be converted using this transfer agent.

validate

protected boolean validate(Object object)

Description copied from class: Transfer

Test that the object is of the correct format for this Transfer class.

Overrides:

validate in class Transfer

Parameters:

object - a java representation of the data to be converted

Returns:

true if object is of the correct form for this transfer type