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jtstand-common is a library derived from jcommon, used by jtstand-chart, which is derived from jfreechart
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/*
 * Copyright (c) 2009 Albert Kurucz. 
 *
 * This file, RefineryUtilities.java is part of JTStand.
 *
 * JTStand 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 of the License, or
 * (at your option) any later version.
 *
 * JTStand 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 GTStand.  If not, see .
 */

package org.jfree.ui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.Window;
import java.lang.reflect.Method;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableColumn;
import javax.swing.table.TableModel;

/**
 * A collection of utility methods relating to user interfaces.
 *
 * @author David Gilbert
 */
public class RefineryUtilities {

    private RefineryUtilities() {
    }

    /** Access to logging facilities. */
    // private static final LogContext logger = Log.createContext(RefineryUtilities.class);

    /**
     * Computes the center point of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
     * results are returned. (See Sun-Bug-ID 4463949 for details).
     *
     * @return the center point of the current screen.
     */
    public static Point getCenterPoint ()
    {
      final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
      try
      {
        final Method method = GraphicsEnvironment.class.getMethod("getCenterPoint", (Class[]) null);
        return (Point) method.invoke(localGraphicsEnvironment, (Object[]) null);
      }
      catch(Exception e)
      {
        // ignore ... will fail if this is not a JDK 1.4 ..
      }

      final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
      return new Point (s.width / 2, s.height / 2);
    }

  /**
   * Computes the maximum bounds of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
   * results are returned. (See Sun-Bug-ID 4463949 for details).
   *
   * @return the maximum bounds of the current screen.
   */
    public static Rectangle getMaximumWindowBounds ()
    {
      final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
      try
      {
        final Method method = GraphicsEnvironment.class.getMethod("getMaximumWindowBounds", (Class[]) null);
        return (Rectangle) method.invoke(localGraphicsEnvironment, (Object[]) null);
      }
      catch(Exception e)
      {
        // ignore ... will fail if this is not a JDK 1.4 ..
      }

      final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
      return new Rectangle (0, 0, s.width, s.height);
    }

    /**
     * Positions the specified frame in the middle of the screen.
     *
     * @param frame  the frame to be centered on the screen.
     */
    public static void centerFrameOnScreen(final Window frame) {
        positionFrameOnScreen(frame, 0.5, 0.5);
    }

    /**
     * Positions the specified frame at a relative position in the screen, where 50% is considered
     * to be the center of the screen.
     *
     * @param frame  the frame.
     * @param horizontalPercent  the relative horizontal position of the frame (0.0 to 1.0,
     *                           where 0.5 is the center of the screen).
     * @param verticalPercent  the relative vertical position of the frame (0.0 to 1.0, where
     *                         0.5 is the center of the screen).
     */
    public static void positionFrameOnScreen(final Window frame,
                                             final double horizontalPercent,
                                             final double verticalPercent) {

        final Rectangle s = getMaximumWindowBounds();
        final Dimension f = frame.getSize();
        final int w = Math.max(s.width - f.width, 0);
        final int h = Math.max(s.height - f.height, 0);
        final int x = (int) (horizontalPercent * w) + s.x;
        final int y = (int) (verticalPercent * h) + s.y;
        frame.setBounds(x, y, f.width, f.height);

    }

    /**
     * Positions the specified frame at a random location on the screen while ensuring that the
     * entire frame is visible (provided that the frame is smaller than the screen).
     *
     * @param frame  the frame.
     */
    public static void positionFrameRandomly(final Window frame) {
        positionFrameOnScreen(frame, Math.random(), Math.random());
    }

    /**
     * Positions the specified dialog within its parent.
     *
     * @param dialog  the dialog to be positioned on the screen.
     */
    public static void centerDialogInParent(final Dialog dialog) {
        positionDialogRelativeToParent(dialog, 0.5, 0.5);
    }

    /**
     * Positions the specified dialog at a position relative to its parent.
     *
     * @param dialog  the dialog to be positioned.
     * @param horizontalPercent  the relative location.
     * @param verticalPercent  the relative location.
     */
    public static void positionDialogRelativeToParent(final Dialog dialog,
                                                      final double horizontalPercent,
                                                      final double verticalPercent) {
        final Dimension d = dialog.getSize();
        final Container parent = dialog.getParent();
        final Dimension p = parent.getSize();

        final int baseX = parent.getX() - d.width;
        final int baseY = parent.getY() - d.height;
        final int w = d.width + p.width;
        final int h = d.height + p.height;
        int x = baseX + (int) (horizontalPercent * w);
        int y = baseY + (int) (verticalPercent * h);

        // make sure the dialog fits completely on the screen...
        final Rectangle s = getMaximumWindowBounds();
        x = Math.min(x, (s.width - d.width));
        x = Math.max(x, 0);
        y = Math.min(y, (s.height - d.height));
        y = Math.max(y, 0);

        dialog.setBounds(x + s.x, y + s.y, d.width, d.height);

    }

    /**
     * Creates a panel that contains a table based on the specified table model.
     *
     * @param model  the table model to use when constructing the table.
     *
     * @return The panel.
     */
    public static JPanel createTablePanel(final TableModel model) {

        final JPanel panel = new JPanel(new BorderLayout());
        final JTable table = new JTable(model);
        for (int columnIndex = 0; columnIndex < model.getColumnCount(); columnIndex++) {
            final TableColumn column = table.getColumnModel().getColumn(columnIndex);
            final Class c = model.getColumnClass(columnIndex);
            if (c.equals(Number.class)) {
                column.setCellRenderer(new NumberCellRenderer());
            }
        }
        panel.add(new JScrollPane(table));
        return panel;

    }

    /**
     * Creates a label with a specific font.
     *
     * @param text  the text for the label.
     * @param font  the font.
     *
     * @return The label.
     */
    public static JLabel createJLabel(final String text, final Font font) {

        final JLabel result = new JLabel(text);
        result.setFont(font);
        return result;

    }

    /**
     * Creates a label with a specific font and color.
     *
     * @param text  the text for the label.
     * @param font  the font.
     * @param color  the color.
     *
     * @return The label.
     */
    public static JLabel createJLabel(final String text, final Font font, final Color color) {

        final JLabel result = new JLabel(text);
        result.setFont(font);
        result.setForeground(color);
        return result;

    }

    /**
     * Creates a {@link JButton}.
     *
     * @param label  the label.
     * @param font  the font.
     *
     * @return The button.
     */
    public static JButton createJButton(final String label, final Font font) {

        final JButton result = new JButton(label);
        result.setFont(font);
        return result;

    }

}