| /****************************************************************************** |
| * Copyright (c) 2004, 2005 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.gmf.runtime.draw2d.ui.mapmode; |
| |
| import org.eclipse.draw2d.geometry.Translatable; |
| |
| |
| /** |
| * Objects implementing this interface are responsible for mapping the units |
| * in the model to pixles. For an example of how to use this interface |
| * @see org.eclipse.gmf.runtime.gef.ui.internal.figure.surface.mapmode.HiMetricMapMode |
| * |
| * @author jschofie / sshaw |
| * @canBeSeenBy org.eclipse.gmf.runtime.draw2d.ui.* |
| */ |
| public interface IMapMode { |
| |
| /** |
| * Convert a Logical Unit into a Device Unit |
| * |
| * @param logicalUnit the value to be converted |
| * @return the value represented in device units |
| */ |
| public int LPtoDP(int logicalUnit); |
| |
| /** |
| * Convert a Device Unit into a Logical Unit |
| * |
| * @param deviceUnit the value to be converted |
| * @return the value represented in logical units |
| */ |
| public int DPtoLP(int deviceUnit); |
| |
| /** |
| * Convert a <code>Translatable</code> to Device Units (pixels) |
| * |
| * @param t the <code>Translatable</code> to convert |
| * @return the parameter <code>t</code> that was scaled for convenience. |
| */ |
| public Translatable LPtoDP( Translatable t ); |
| |
| /** |
| * Convert a Translatable to Logical Units (i.e. Hi-Metrics) |
| * @param t the Translatable to convert |
| * @return the parameter <code>t</code> that was scaled for convenience. |
| */ |
| public Translatable DPtoLP( Translatable t ); |
| |
| } |