Utils.java :  » HTML-Parser » HTMLParser2 » org » vietspider » generic » Java Open Source

/*******************************************************************************
 * Copyright (c) Emil Crumhorn - Hexapixel.com - emil.crumhorn@gmail.com
 * 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:
 *    emil.crumhorn@gmail.com - initial API and implementation
 *******************************************************************************/ 

package org.vietspider.generic;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Monitor;
import org.eclipse.swt.widgets.Shell;

public class Utils {

  /**
   * Takes a font and gives it a bold typeface.
   * 
   * @param font Font to modify
   * @return Font with bold typeface 
   */
  public static Font applyBoldFont(Font font) {
    if (font == null)
      return null;

    FontData[] fontDataArray = font.getFontData();
    if (fontDataArray == null) {
      return null;
    }
    for (int index = 0; index < fontDataArray.length; index++) {
      FontData fData = fontDataArray[index];
      fData.setStyle(SWT.BOLD);
    }

    return new Font(Display.getDefault(), fontDataArray);
  }

  /**
   * Applies a certain font size to a font.
   * 
   * @param font Font to modify
   * @param size New font size
   * @return Font with new font size
   */
  public static Font applyFontSize(Font font, int size) {
    if (font == null)
      return null;

    FontData[] fontDataArray = font.getFontData();
    if (fontDataArray == null) {
      return null;
    }
    for (int index = 0; index < fontDataArray.length; index++) {
      FontData fData = fontDataArray[index];
      fData.setHeight(size);
    }

    return new Font(Display.getDefault(), fontDataArray);
  }

  /**
   * Centers a dialog (Shell) on the <b>primary</b> (active) display.
   * 
   * @param shell Shell to center on screen
   * @see Shell
   */
  public static void centerDialogOnScreen(Shell shell) {
    // do it by monitor to support dual-head cards and still center things correctly onto the screen people are on. -- Emil
    Monitor m = Display.getDefault().getPrimaryMonitor();
    Rectangle bounds = m.getBounds();

    int screen_x = bounds.width;
    int screen_y = bounds.height;

    shell.setLocation(screen_x / 2 - (shell.getBounds().width / 2), screen_y / 2 - (shell.getBounds().height / 2));
  }
}