Java Swing Look and Feel isDarkResultsBackground()

Description

is Dark Results Background

License

Open Source License

Declaration

public static boolean isDarkResultsBackground()

Method Source Code


//package com.java2s;
/*/*from  w  w w  .  j  a va  2s .  co  m*/
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 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
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import java.awt.*;

import java.awt.image.BufferedImage;
import java.awt.image.PixelGrabber;

import javax.swing.*;

public class Main {
    private static Color profilerResultsBackground;
    private static Boolean darkResultsBackground;

    public static boolean isDarkResultsBackground() {
        if (darkResultsBackground == null) {
            Color c = getProfilerResultsBackground();
            int b = (int) (0.3 * c.getRed() + 0.59 * c.getGreen() + 0.11 * c.getBlue());
            darkResultsBackground = b < 85;
        }

        return darkResultsBackground;
    }

    public static Color getProfilerResultsBackground() {
        if (profilerResultsBackground == null) {
            if (isGTKLookAndFeel() || isNimbusLookAndFeel()) {
                profilerResultsBackground = getGTKProfilerResultsBackground();
            } else {
                profilerResultsBackground = getNonGTKProfilerResultsBackground();
            }
            if (profilerResultsBackground == null)
                profilerResultsBackground = Color.WHITE;
        }

        return profilerResultsBackground;
    }

    /** Determines if current L&F is GTKLookAndFeel */
    public static boolean isGTKLookAndFeel() {
        // is current L&F some kind of GTKLookAndFeel?
        return UIManager.getLookAndFeel().getID().equals("GTK"); //NOI18N
    }

    /** Determines if current L&F is Nimbus */
    public static boolean isNimbusLookAndFeel() {
        // is current L&F Nimbus?
        return UIManager.getLookAndFeel().getID().equals("Nimbus"); //NOI18N
    }

    private static Color getGTKProfilerResultsBackground() {
        int[] pixels = new int[1];
        pixels[0] = -1;

        // Prepare textarea to grab the color from
        JTextArea textArea = new JTextArea();
        textArea.setSize(new Dimension(10, 10));
        textArea.doLayout();

        // Print the textarea to an image
        Image image = new BufferedImage(textArea.getSize().width, textArea.getSize().height,
                BufferedImage.TYPE_INT_RGB);
        textArea.printAll(image.getGraphics());

        // Grab appropriate pixels to get the color
        PixelGrabber pixelGrabber = new PixelGrabber(image, 5, 5, 1, 1, pixels, 0, 1);
        try {
            pixelGrabber.grabPixels();
            if (pixels[0] == -1)
                return Color.WHITE; // System background not customized
        } catch (InterruptedException e) {
            return getNonGTKProfilerResultsBackground();
        }

        return pixels[0] != -1 ? new Color(pixels[0]) : getNonGTKProfilerResultsBackground();
    }

    private static Color getNonGTKProfilerResultsBackground() {
        return UIManager.getColor("Table.background"); // NOI18N
    }
}

Java Swing Look and Feel isDarkResultsBackground()

Description

License

Declaration

Method Source Code

Related