Positions the specified dialog within its parent. - Java Swing

Java examples for Swing:JDialog

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Description

Positions the specified dialog within its parent.

Demo Code

/*//from w  w  w  .  j av a 2 s . c o m
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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.
 *
 * Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
 */
//package com.java2s;

import java.awt.Container;
import java.awt.Dialog;
import java.awt.Dimension;

import java.awt.Rectangle;

import java.awt.Window;

public class Main {
    /**
     * 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 Container parent = dialog.getParent();
        if (parent == null || (parent.isVisible() == false)) {
            positionFrameOnScreen(dialog, horizontalPercent,
                    verticalPercent);
            return;
        }

        final Dimension d = dialog.getSize();
        final Dimension p = parent.getSize();

        final int baseX = parent.getX();
        final int baseY = parent.getY();

        final int parentPointX = baseX
                + (int) (horizontalPercent * p.width);
        final int parentPointY = baseY + (int) (verticalPercent * p.height);

        final int dialogPointX = Math.max(0, parentPointX
                - (int) (horizontalPercent * d.width));
        final int dialogPointY = Math.max(0, parentPointY
                - (int) (verticalPercent * d.height));

        // make sure the dialog fits completely on the screen...
        final Rectangle s = parent.getGraphicsConfiguration().getBounds();
        final Rectangle r = new Rectangle(dialogPointX, dialogPointY,
                d.width, d.height);
        final Rectangle intersectedDialogBounds = r.intersection(s);
        if (intersectedDialogBounds.width < d.width) {
            r.x = s.width - d.width;
            r.width = d.width;
        }
        if (intersectedDialogBounds.height < d.height) {
            r.y = s.height - d.height;
            r.height = d.height;
        }
        final Rectangle finalIntersection = r.intersection(s);
        dialog.setBounds(finalIntersection);
    }

    /**
     * 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 = frame.getGraphicsConfiguration().getBounds();
        final Dimension f = frame.getSize();

        final int spaceOnX = Math.max(s.width - f.width, 0);
        final int spaceOnY = Math.max(s.height - f.height, 0);
        final int x = (int) (horizontalPercent * spaceOnX) + s.x;
        final int y = (int) (verticalPercent * spaceOnY) + s.y;
        frame.setBounds(x, y, f.width, f.height);
        frame.setBounds(s.intersection(frame.getBounds()));
    }
}

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