ColorManager.java

/*******************************************************************************
 * MontiCore Language Workbench
 * Copyright (c) 2015, 2016, MontiCore, All rights reserved.
 *  
 * This project is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this project. If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package de.se_rwth.langeditor.global;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;

import com.google.inject.Singleton;

@Singleton
public class ColorManager {
  
  protected Map<RGB, Color> fColorTable = new HashMap<>(10);
  
  public void dispose() {
    for (Color color : fColorTable.values()) {
      color.dispose();
    }
  }
  
  public Color getColor(RGB rgb) {
    Color color = fColorTable.get(rgb);
    if (color == null) {
      color = new Color(Display.getCurrent(), rgb);
      fColorTable.put(rgb, color);
    }
    return color;
  }
}