org.eclipse.swt.internal

Class DPIUtil.AutoScaleImageDataProvider

java.lang.Object

org.eclipse.swt.internal.DPIUtil.AutoScaleImageDataProvider

All Implemented Interfaces:

ImageDataProvider

Enclosing class:

DPIUtil

public static final class DPIUtil.AutoScaleImageDataProvider
extends Object
implements ImageDataProvider

AutoScale ImageDataProvider.

Constructor Summary

Constructors

Constructor and Description
AutoScaleImageDataProvider(Device device, ImageData data, int zoom)

Method Summary

Modifier and Type	Method and Description
ImageData	getImageData(int zoom) Returns the image data for the given zoom level.

Methods inherited from class java.lang.Object

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

Constructor Detail

AutoScaleImageDataProvider

public AutoScaleImageDataProvider(Device device,
                                  ImageData data,
                                  int zoom)

Method Detail

getImageData

public ImageData getImageData(int zoom)

Description copied from interface: ImageDataProvider

Returns the image data for the given zoom level.

If no image is available for a particular zoom level, this method should return null. For zoom == 100, returning null in not allowed, and SWT will throw an exception.

Specified by:

getImageData in interface ImageDataProvider

Parameters:

zoom - The zoom level in % of the standard resolution (which is 1 physical monitor pixel == 1 SWT logical pixel). Typically 100, 150, or 200.

Returns:

the image data, or null if zoom != 100 and no image is available for the given zoom level.