source: java-rpg-client/gamegui/Textbox.java

package gamegui;

import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;

public class Textbox extends Member
{
        private String label;
        private String text;
        private Font font;
        private int textStart;
        private boolean selected;
        private int cursorState;
        private int blinkInterval;
        private long lastCursorChange;
        private boolean password;
        
        public Textbox(String newName, int newX, int newY, int newWidth, int newHeight, String newLabel, Font newFont, boolean isPass) {
                super(newName, newX, newY, newWidth, newHeight);
                
                label = new String(newLabel);
                text = new String();
                font = newFont;
                textStart = 0;
                selected = false;
                cursorState = 0;
                blinkInterval = 1000/2;
                password = isPass;
        }
        
        public void handleEvent(KeyEvent e) {
                if(32 <= e.getKeyCode() && e.getKeyCode() <= 127)
                {
                        if(e.getKeyCode() == 127)
                        {
                                if(text.length() > 0)
                                        text = text.substring(0, text.length() - 1);
                        }
                        else
                                text = text + Character.toString(e.getKeyChar());

                }
                else if(e.getKeyCode() == 8)
                {
                        if(text.length() > 0)
                                text = text.substring(0, text.length() - 1);
                }
        }
        
        public void draw(Graphics g) {
                String drawnString = new String();
                FontMetrics metrics = g.getFontMetrics(font);
                
                GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
        GraphicsDevice device = env.getDefaultScreenDevice();
        GraphicsConfiguration gc = device.getDefaultConfiguration();
        
        BufferedImage source = gc.createCompatibleImage(getWidth(), getHeight());
        Graphics2D srcGraphics = source.createGraphics();
        
        if(selected && System.currentTimeMillis() - lastCursorChange > blinkInterval)
                {
                        if(cursorState == 0)
                                cursorState = 1;
                        else
                                cursorState = 0;
                        
                        lastCursorChange = System.currentTimeMillis();
                }
                
        if(password)
        {
                for(int x=0;x<text.length();x++)
                                drawnString+="*";
        }
        else
                drawnString = text;
                
        if(metrics.stringWidth(drawnString) + 9 > getWidth())
                textStart = metrics.stringWidth(drawnString)+9-getWidth();
        else
                textStart = 0;
        
        g.setColor(Color.green);
                g.setFont(font);
                srcGraphics.setColor(Color.green);
                srcGraphics.setFont(font);

                srcGraphics.drawString(drawnString, 5-textStart, (getHeight() + metrics.getHeight())/2 - 2);
                
                g.drawImage(source, getX(), getY(), null);
                g.drawString(label, getX() - metrics.stringWidth(label) - 10, getY() + (getHeight() + metrics.getHeight())/2 - 2);
                
                if(selected && cursorState == 1)
                        g.drawLine(getX() + metrics.stringWidth(drawnString) - textStart + 6, getY() + 5, getX() + metrics.stringWidth(drawnString) - textStart + 6, getY() + getHeight() - 5);
                
                g.setColor(Color.red);
                g.drawRect(getX(), getY(), getWidth(), getHeight());
        }
        
        public boolean isClicked(int xCoord, int yCoord) {
                if(xCoord < getX() || getX() + getWidth() < xCoord)
                        return false;
                if(yCoord < getY() || getY() + getHeight() < yCoord)
                        return false;
                
                        return true;
        }
        
        public void clear() {
                text = "";
                textStart = 0;
                selected = false;
        }

        public int getBlinkInterval() {
                return blinkInterval;
        }

        public int getCursorState() {
                return cursorState;
        }

        public Font getFont() {
                return font;
        }

        public String getLabel() {
                return label;
        }

        public long getLastCursorChange() {
                return lastCursorChange;
        }

        public boolean isSelected() {
                return selected;
        }

        public String getText() {
                return text;
        }

        public int getTextStart() {
                return textStart;
        }
        
        public void setText(String newText) {
                text = newText;
        }
        
        public void setSelected(boolean isSelected) {
                selected = isSelected;
        }

        public void setTextStart(int textStart) {
                this.textStart = textStart;
        }
        
        public void setCursorState(int cursorState) {
                this.cursorState = cursorState;
        }

        public void setLastCursorChange(long lastCursorChange) {
                this.lastCursorChange = lastCursorChange;
        }
}