import java.awt.*; import java.awt.event.*; import javax.swing.*; public class LineShow extends JPanel implements MouseListener { private JLabel lab; public LineShow(int i) { setLayout(new BorderLayout()); setBackground(Color.LIGHT_GRAY); lab = new JLabel(); add(lab); lab.setText(""+i+""); addMouseListener(this); } public void setEnabled(boolean state) { active = state; if(active) { setBackground(Color.LIGHT_GRAY); } else { setBackground(Color.BLACK); setText(""); } } public void setText(String str) { lab.setText(str); //repaint(); } public void setSelected(boolean sel) { isSelected = sel; setBackground(isSelected? Color.PINK : Color.LIGHT_GRAY); repaint(); } private boolean isSelected=false, startsInBeng=true, endsInBeng=true; private final static Color red = new Color(255,150,150), blue = new Color(150,150,255); private final static GradientPaint engStart = new GradientPaint(0,0,red, 20,0,Color.LIGHT_GRAY), bengStart = new GradientPaint(0,0,blue, 20,0,Color.LIGHT_GRAY); public void setEnds(boolean strt, boolean end) { startsInBeng = strt; endsInBeng = end; } private boolean active; public void paintComponent(Graphics g) { super.paintComponent(g); if(!active) return; Graphics2D g2 = (Graphics2D) g; g2.setPaint((startsInBeng? bengStart: engStart)); g2.fillRect(0,0,21,getHeight()); int w = getWidth(); if(endsInBeng) { GradientPaint bengEnd = new GradientPaint(w-20,0,Color.LIGHT_GRAY, w,0,blue); g2.setPaint(bengEnd); } else { GradientPaint engEnd = new GradientPaint(w-20,0,Color.LIGHT_GRAY, w,0,red); g2.setPaint(engEnd); } g2.fillRect(w-21,0,20,getHeight()); } public void mouseEntered(MouseEvent me) {} public void mouseExited(MouseEvent me) {} public void mouseClicked(MouseEvent me) { requestFocus(); } public void mousePressed(MouseEvent me) {} public void mouseReleased(MouseEvent me) {} }