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java
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import javax.swing.*; public class Parker { public static void main(String[] args) { TheWindow w = new TheWindow(); w.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //X wont close the window with out this line w.setSize(1280,720); w.setVisible(true); } } import java.awt.*; import javax.swing.*; import javax.swing.event.*; public class TheWindow extends JFrame { private JSlider slider; //declare slider private drawRect myPanel; //declare/ create panel public TheWindow() { super("Slider Example"); //make title myPanel = new drawRect(); myPanel.setBackground(Color.cyan); //change background color slider = new JSlider(SwingConstants.VERTICAL, 0, 315, 10);// restrains the slider from scaling square to 0-300 pixels slider.setMajorTickSpacing(20); //will set tick marks every 10 pixels slider.setPaintTicks(true); //this actually paints the ticks on the screen slider.addChangeListener ( new ChangeListener() { public void stateChanged(ChangeEvent e) { myPanel.setD(slider.getValue()); //Wherever you set the slider, it will pass that value and that will paint on the screen } } ); add(slider, BorderLayout.WEST); //similar to init method, adds slider and panel to GUI add(myPanel, BorderLayout.CENTER); } import java.awt.*; import javax.swing.*; public class drawRect extends JPanel { private int d = 20; //this determines the beginning size of the rect. public void paintComponent(Graphics g)//paints obj on the screen { super.paintComponent(g); //prepares graphic object for drawing // ImageIcon i = new ImageIcon("A:\\Capture.png"); //location of Image // i.paintIcon(this, g, d, d); //paints icon on screen int originX = getWidth() / 2; //this is subtracting half of 'd' from the center point to scale it form the center int originY = getHeight() / 2; int x = originX - (d / 2); int y = originY - (d / 2); System.out.println(x + "x" + y); g.fillRect(x, y, d, d); //paints rectangle on screen //x , y, width, height }
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