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The osx x86_64 swt jar as available in the Eclipse 4.6 (Neon) release for OSX. It is suitable for use with jface and other dependencies available from maven central in the org.eclipse.scout.sdk.deps group. The sources is copied from swt-4.6-cocoa-macosx-x86_64.zip from http://download.eclipse.org/eclipse/downloads/drops4/R-4.6-201606061100/ and javadoc is generated from sources.

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/*******************************************************************************
 * Copyright (c) 2015 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.graphics;

/**
 * Interface to provide a callback mechanism to get information about images
 * when the application is moved from a low DPI monitor to a high DPI monitor.
 * This provides API which will be called by SWT during the image rendering.
 *
 * This interface needs to be implemented by client code to provide the
 * image information on demand.
 *
 * @since 3.104
 */
public interface ImageFileNameProvider {

	/**
	 * Returns the image filePath 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.
	 *
	 * @param zoom
	 *            The zoom level in % of the standard resolution (which is 1
	 *            physical monitor pixel == 1 SWT logical pixel). Typically 100,
	 *            150, or 200.
	 * @return the image filePath, or null if
	 *         zoom != 100 and no image is available for the given
	 *         zoom level.
	 * @since 3.104
	 */
	public String getImagePath (int zoom);

}