JIconTextField.java

/*
 *  Copyright 2010 Georgios Migdos <cyberpython@gmail.com>.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *  under the License.
 */
package bmach.ui.gui.components;

import java.awt.Graphics;
import java.awt.Insets;
import javax.swing.Icon;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.border.Border;

/**
 *
 * @author Georgios Migdos <cyberpython@gmail.com>
 */
public class JIconTextField extends JTextField{

    private Icon icon;
    private Insets dummyInsets;

    public JIconTextField(){
        super();
        this.icon = null;

        Border border = UIManager.getBorder("TextField.border");
        JTextField dummy = new JTextField();
        this.dummyInsets = border.getBorderInsets(dummy);
    }

    public void setIcon(Icon icon){
        this.icon = icon;
    }

    public Icon getIcon(){
        return this.icon;
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        int textX = 2;

        if(this.icon!=null){
            int iconWidth = icon.getIconWidth();
            int iconHeight = icon.getIconHeight();
            int x = dummyInsets.left + 5;//this is our icon's x
            textX = x+iconWidth+2; //this is the x where text should start
            int y = (this.getHeight() - iconHeight)/2;
            icon.paintIcon(this, g, x, y);
        }

        setMargin(new Insets(2, textX, 2, 2));

    }

}