Any DOWNLOADABLE programs for picking RGB colors easily with float value?

General Discussions
#1

Would be very helpful if someone knows of such a program.

#2

You can just open any image editing program, use its color slider and divide the rgb values by 255 and get the float values, if that’s what you’re looking for.

#3

Thank you! Didn’t know it was that simple!

#4

Or DIY:

import javax.swing.*;
import javax.swing.event.*;

public class NeedSomeColors {
	public static void main(String[] a) {
		JFrame frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		JColorChooser jcc = new JColorChooser();
		frame.add(jcc);
		jcc.getSelectionModel().addChangeListener(new ChangeListener() {
			@Override
			public void stateChanged(ChangeEvent e) {
				float[] rgba = jcc.getSelectionModel().getSelectedColor().getRGBComponents(null);
				frame.setTitle(rgba[0] + " " + rgba[1] + " " + rgba[2]);
			}
		});
		frame.pack();
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
	}
}
#5

Very nice and useful example code!
I know it was just a short example, but just a quick edit in order to:

  • make it compile under pre-Java 1.8 (using final for locals closed over anonymous classes; remove @Override for interface implementations)
  • add JTextField, which has focus all the time, to be able to Ctrl+C copy/paste the RGB values
  • format the RGB values with ‘f’ suffix and commas in-between values, to be inserted as arguments in common methods

import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class NeedSomeColors {
    public static void main(String[] a) {
        final JFrame frame = new JFrame("Press Ctrl+C to copy RGB into clipboard");
        frame.setLayout(new BorderLayout());
        final JTextField tf = new JTextField();
        tf.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                if ((e.getModifiers() & KeyEvent.CTRL_MASK) != 0 && e.getKeyCode() == KeyEvent.VK_C) {
                    String rgb = tf.getText();
                    StringSelection stringSelection = new StringSelection(rgb);
                    Clipboard clpbrd = Toolkit.getDefaultToolkit().getSystemClipboard();
                    clpbrd.setContents(stringSelection, null);
                    frame.setTitle("Copied '" + rgb + "' into clipboard");
                    e.consume();
                }
            }
        });
        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        final JColorChooser jcc = new JColorChooser();
        frame.add(jcc, BorderLayout.CENTER);
        frame.add(tf, BorderLayout.NORTH);
        jcc.getSelectionModel().addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent e) {
                float[] rgba = jcc.getSelectionModel().getSelectedColor().getRGBComponents(null);
                tf.setText(rgba[0] + "f, " + rgba[1] + "f, " + rgba[2] + "f");
            }
        });
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}