Java Screen Size getDefaultScreenSize()

Description

get Default Screen Size

License

Open Source License

Declaration

public static Dimension getDefaultScreenSize() 

Method Source Code

//package com.java2s;
/* Copyright (C) 2000-2003 The Software Conservancy as Trustee.
 * All rights reserved./*from   w w w  . j  av a 2s .  c om*/
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 * Nothing in this notice shall be deemed to grant any rights to trademarks,
 * copyrights, patents, trade secrets or any other intellectual property of the
 * licensor or any contributor except as expressly stated herein. No patent
 * license is granted separate from the Software, for code that you delete from
 * the Software, or for combinations of the Software with other software or
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 */

import java.awt.*;

public class Main {
    private static Rectangle dirtyScreenSizeWithOutAdjustment;
    private static Dimension DEFAULT_SIZE = new Dimension(1000, 800);

    public static Dimension getDefaultScreenSize() {
        Rectangle dimension = getDefaultScreenSizeWithoutAdjustment();

        // many drivers will return a single graphics device even where there is more than one device (monitor)
        // because the graphics card is making them appear as one, therefore use a hack
        // This assumes the aspect ratio of a monitor is somewhere between 1 and 1.5.
        // The calculation starts to fail as the number of monitors increase.
        // It also assumes that monitors are laids out from left-right, and not from top-bottom
        // TODO: one day this may not be neccessary
        int noOfScreens = (int) Math.floor((double) dimension.width / (double) dimension.height); // this is a good estimate in most cases

        if (noOfScreens < 1) {
            noOfScreens = 1;
        }
        if (dimension.width < 100 || dimension.height < 100) {
            dimension.width = DEFAULT_SIZE.width;
            dimension.height = DEFAULT_SIZE.height;
        }
        return new Dimension(dimension.width / noOfScreens, dimension.height);
    }

    public static Rectangle getDefaultScreenSizeWithoutAdjustment() {
        return getDefaultScreenSizeWithoutAdjustment(false);
    }

    public static Rectangle getDefaultScreenSizeWithoutAdjustment(boolean useDirty) {
        if (useDirty && dirtyScreenSizeWithOutAdjustment != null)
            return dirtyScreenSizeWithOutAdjustment;

        Rectangle totalBounds = new Rectangle(0, 0);

        GraphicsEnvironment graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment(); // to work with multiple screens
        GraphicsDevice[] screenDevices = graphicsEnvironment.getScreenDevices();
        for (GraphicsDevice screenDevice : screenDevices) {
            GraphicsConfiguration graphicsConfiguration = screenDevice.getDefaultConfiguration();
            Rectangle singleScreenBounds = graphicsConfiguration.getBounds();
            totalBounds.width += singleScreenBounds.width;
            totalBounds.height = Math.max(totalBounds.height, singleScreenBounds.height);
        }
        dirtyScreenSizeWithOutAdjustment = totalBounds;
        return totalBounds;
    }
}

Related

1. getDefaultAppSize()
2. getDefaultDeviceScreenSize()
3. getDefaultMainFrameSize()
4. getDefaultScreenBounds()
5. getDefaultScreenDevice()
6. getDefaultScreenSizeWithoutAdjustment()
7. getDesktopBounds()
8. getDesktopBounds()
9. getLocalScreenBounds()