ui/src/main/java/org/apache/hop/ui/core/gui/ManagedFont.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hop.ui.core.gui;

import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.widgets.Display;

/** Class to keep track of which font is a system font (managed by the OS) and which is not. */
public class ManagedFont {
  private Font font;
  private boolean systemFont;

  /**
   * @param font The font
   * @param systemFont true if this is a system font and doesn't need to be disposed off
   */
  public ManagedFont(Font font, boolean systemFont) {
    this.font = font;
    this.systemFont = systemFont;
  }

  /**
   * Create a new managed font by using fontdata
   *
   * @param display the display to use
   * @param fontData The fontdata to create the font with.
   */
  public ManagedFont(Display display, FontData fontData) {
    this.font = new Font(display, fontData);
    this.systemFont = false;
  }

  /** Free the managed resource if it hasn't already been done and if this is not a system font */
  public void dispose() {
    // System color and already disposed off colors don't need to be disposed!
    if (!systemFont && !font.isDisposed()) {
      font.dispose();
    }
  }

  /**
   * @return Returns the font.
   */
  public Font getFont() {
    return font;
  }

  /**
   * @return true if this is a system font.
   */
  public boolean isSystemFont() {
    return systemFont;
  }

  /**
   * @param font the font to set
   */
  public void setFont(Font font) {
    this.font = font;
  }

  /**
   * @param systemFont the systemFont to set
   */
  public void setSystemFont(boolean systemFont) {
    this.systemFont = systemFont;
  }
}