Java Swing UIManager createHorizontalLine()

Description

create Horizontal Line

License

Open Source License

Declaration

public static JSeparator createHorizontalLine()

Method Source Code


//package com.java2s;
/*//from ww w.j  ava2s.c  om
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 * Development and Distribution License("CDDL") (collectively, the
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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 disabledLineColor;
    private static Color profilerResultsBackground;

    public static JSeparator createHorizontalLine() {
        JSeparator horizontalSeparator = new JSeparator() {
            private final int maxHeight = isNimbusLookAndFeel() ? 2
                    : isGTKLookAndFeel() ? 3 : isAquaLookAndFeel() ? 6 : 1;
            private final boolean customPaint = isAquaLookAndFeel();

            public Dimension getMinimumSize() {
                return getPreferredSize();
            }

            public Dimension getMaximumSize() {
                return getPreferredSize();
            }

            public Dimension getPreferredSize() {
                Dimension dim = super.getPreferredSize();
                dim.height = customPaint ? 1 : Math.min(dim.height, maxHeight);
                return dim;
            }

            public void paint(Graphics g) {
                if (customPaint)
                    g.translate(0, -maxHeight + 1);
                super.paint(g);
                if (customPaint)
                    g.translate(0, maxHeight - 1);
            }
        };

        return horizontalSeparator;
    }

    public static JSeparator createHorizontalLine(Color background) {
        final boolean customPaint = isNimbus() || isAquaLookAndFeel();
        JSeparator separator = new JSeparator() {
            public Dimension getMaximumSize() {
                return new Dimension(super.getMaximumSize().width, 1);
            }

            public Dimension getPreferredSize() {
                return new Dimension(super.getPreferredSize().width, 1);
            }

            public void paint(Graphics g) {
                if (customPaint) {
                    g.setColor(getDisabledLineColor());
                    g.fillRect(0, 0, getWidth(), getHeight());
                } else {
                    super.paint(g);
                }
            }
        };
        separator.setBackground(background);
        return separator;
    }

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

    /** 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 AquaLookAndFeel */
    public static boolean isAquaLookAndFeel() {
        // is current L&F some kind of AquaLookAndFeel?
        return UIManager.getLookAndFeel().getID().equals("Aqua"); //NOI18N
    }

    /** Determines if current L&F is Nimbus or GTK with Nimbus theme*/
    public static boolean isNimbus() {
        // is current L&F Nimbus or GTK with Nimbus theme?
        return isNimbusLookAndFeel() || isNimbusGTKTheme();
    }

    public static Color getDisabledLineColor() {
        if (disabledLineColor == null) {
            disabledLineColor = UIManager.getColor(isAquaLookAndFeel() ? "controlShadow" : // NOI18N
                    "Label.disabledForeground"); // NOI18N
            if (disabledLineColor == null)
                disabledLineColor = UIManager.getColor("Label.disabledText"); // NOI18N
            if (disabledLineColor == null || disabledLineColor.equals(getProfilerResultsBackground()))
                disabledLineColor = Color.GRAY;
        }
        return disabledLineColor;
    }

    /** Determines if current L&F is GTK using Nimbus theme */
    public static boolean isNimbusGTKTheme() {
        // is current L&F GTK using Nimbus theme?
        return isGTKLookAndFeel()
                && "nimbus".equals(Toolkit.getDefaultToolkit().getDesktopProperty("gnome.Net/ThemeName")); //NOI18N
    }

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

        return profilerResultsBackground;
    }

    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 UIManager createHorizontalLine()

Description

License

Declaration

Method Source Code

Related