package ij.gui;
import ij.*;
import ij.process.*;
import ij.util.*;
import ij.plugin.Colors;
import java.awt.*;
import java.util.Vector;
import java.awt.event.*;

 /** Displays a dialog that allows the user to select a color using three sliders. */
public class ColorChooser implements TextListener, AdjustmentListener {
    Vector colors, sliders;
    ColorPanel panel;
    Color initialColor;
    int red, green, blue;
    boolean useHSB;
    String title;
    Frame frame;
    double scale = Prefs.getGuiScale();

    /** Constructs a ColorChooser using the specified title and initial color. */
    public ColorChooser(String title, Color initialColor, boolean useHSB) {
        this(title, initialColor, useHSB, null);
    public ColorChooser(String title, Color initialColor, boolean useHSB, Frame frame) {
        this.title = title;
        if (initialColor==null) initialColor =;
        this.initialColor = initialColor;
        red = initialColor.getRed();
        green = initialColor.getGreen();
        blue = initialColor.getBlue();
        this.useHSB = useHSB;
        this.frame = frame;

    /** Displays a color selection dialog and returns the color selected by the user. */
    public Color getColor() {
        GenericDialog gd = frame!=null?new GenericDialog(title, frame):new GenericDialog(title);
        gd.addSlider("Red:", 0, 255, red);
        gd.addSlider("Green:", 0, 255, green);
        gd.addSlider("Blue:", 0, 255, blue);
        panel = new ColorPanel(initialColor, scale);
        gd.addPanel(panel, GridBagConstraints.CENTER, new Insets(10, 0, 0, 0));
        colors = gd.getNumericFields();
        for (int i=0; i<colors.size(); i++)
        sliders = gd.getSliders();
        for (int i=0; i<sliders.size(); i++)
        if (gd.wasCanceled()) return null;
        int red = (int)gd.getNextNumber();
        int green = (int)gd.getNextNumber();
        int blue = (int)gd.getNextNumber();
        return new Color(red, green, blue);

    public void textValueChanged(TextEvent e) {
        int red = (int)Tools.parseDouble(((TextField)colors.elementAt(0)).getText());
        int green = (int)Tools.parseDouble(((TextField)colors.elementAt(1)).getText());
        int blue = (int)Tools.parseDouble(((TextField)colors.elementAt(2)).getText());
        if (red<0) red=0; if (red>255) red=255;
        if (green<0) green=0; if (green>255) green=255;
        if (blue<0) blue=0; if (blue>255) blue=255;
        panel.setColor(new Color(red, green, blue));

    public synchronized void adjustmentValueChanged(AdjustmentEvent e) {
        Object source = e.getSource();
        for (int i=0; i<sliders.size(); i++) {
            if (source==sliders.elementAt(i)) {
                Scrollbar sb = (Scrollbar)source;
                TextField tf = (TextField)colors.elementAt(i);


class ColorPanel extends Panel {
    private int width=150, height=50;
    private Font font;
    private Color c;
    ColorPanel(Color c, double scale) {
        this.c = c;
        width = (int)(width*scale);
        height = (int)(height*scale);
        font = new Font("Monospaced", Font.PLAIN, (int)(18*scale));

    public Dimension getPreferredSize() {
        return new Dimension(width, height);

    void setColor(Color c) {
        this.c = c;

    public Dimension getMinimumSize() {
        return new Dimension(width, height);

    public void paint(Graphics g) {
        g.fillRect(0, 0, width, height);
        int intensity = (c.getRed()+c.getGreen()+c.getBlue())/3;
        Color c2 = intensity<128?;
        Java2.setAntialiasedText(g, true);
        String s = Colors.colorToString(c);
        g.drawString(s, 5, height-5);
        g.drawRect(0, 0, width-1, height-1);