com.github.becausetesting.commonswindow.utils.ui.JTextFieldUtils Maven / Gradle / Ivy

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package com.github.becausetesting.commonswindow.utils.ui;

import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.RenderingHints;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;

import javax.swing.JTextField;

public class JTextFieldUtils {

	public static void createTooltips(JTextField textField, String tips) {

		textField.addFocusListener(new FocusListener() {

			@Override
			public void focusLost(FocusEvent e) {
				// TODO Auto-generated method stub

			}

			@Override
			public void focusGained(FocusEvent e) {
				// TODO Auto-generated method stub

			}
		});
	}

	public class HintTextField extends JTextField {
		/**
		 * 
		 */
		private static final long serialVersionUID = -3670076332109681892L;
		private final String _hint;

		public HintTextField(String hint) {
			_hint = hint;
		}

		@Override
		public void paint(Graphics g) {
			super.paint(g);
			if (getText().length() == 0) {
				int h = getHeight();
				((Graphics2D) g).setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
						RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
				Insets ins = getInsets();
				FontMetrics fm = g.getFontMetrics();
				int c0 = getBackground().getRGB();
				int c1 = getForeground().getRGB();
				int m = 0xfefefefe;
				int c2 = ((c0 & m) >>> 1) + ((c1 & m) >>> 1);
				g.setColor(new Color(c2, true));
				setFont(getFont().deriveFont(Font.ITALIC));
				g.drawString(_hint, ins.left, h / 2 + fm.getAscent() / 2 - 2);
			}
		}

	}

}