Contoh Coding Mouse Move Drag n Drop Pemrograman Java

Terkadang dosen memang memberikan tugas yang susah. Buat kalian yang sudah mentok mikir tugas dari dosen yang tidak kunjung selesai. Anda beruntung sekali bisa membaca postingan ini. Karena, dibawah ada coding langsung jadi buat mouse drag n drop.

Bagaimana sih coding dari mouse move drag n drop pada pemrograman java itu ? Apakah susah coding nya ?

Coding mouse move drag n drop tidak susah-susah amat. Hanya kita harus lebih peka dalam pemrograman.

Berikut adalah coding dari mouse move drag n drop yang Anda cari :

package mousedraganddrop;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.border.TitledBorder;

public class MouseDragAndDrop extends JFrame {
Canvas1 canvas;
  JLabel label;

  public MouseDragAndDrop() {
    super();
    Container container = getContentPane();
    canvas = new Canvas1();
    container.add(canvas);
    JPanel panel = new JPanel();
    panel.setLayout(new GridLayout(1, 2));
    label = new JLabel("");
    panel.add(label);
    container.add(panel, BorderLayout.SOUTH);
    setSize(600,300);
    setVisible(true);
  }
    public static void main(String arg[]) {
    new MouseDragAndDrop();
  }
  class Canvas1 extends JPanel {
    double p, q, width, height;
    int p1, q1, p2, q2;
    Rectangle2D rect1,rect2;
    Rectangle2D rectangle;
    Cursor cursor;
    public Canvas1() {
      p = 25;
      q = 25;
      width = 90;
      height = 70;
      addMouseListener(new EventMouseListener());
      addMouseMotionListener(new EventMouseMotionListener());
    }
    public void paint(Graphics g) {
      Graphics2D g2 = (Graphics2D) g;
      rect1 = new Rectangle2D.Double(p, q, width, height);
      g2.draw(rect1);
      if (rectangle != null) {
        drawSquares(g2, rectangle);
      }
      if (cursor != null)
        setCursor(cursor);
    }
    public void drawSquares(Graphics2D g2, Rectangle2D rect) {
      double p = rect.getX();
      double q = rect.getY();
      double width = rect.getWidth();
      double height = rect.getHeight();
      g2.setColor(Color.black);
    }
   class EventMouseListener extends MouseAdapter {
      public void mousePressed(MouseEvent event) {
          rect2 = rect1;
          rectangle = rect1.getBounds2D();
          display(rect2);
          p1 = event.getX();
          q1 = event.getY();
      }
      public void mouseReleased(MouseEvent event) {
          rectangle = rect1.getBounds2D();
          rect2 = rect1;
          display(rect2);
       }
      public void mouseClicked(MouseEvent event) {
          rect2 = rect1;
          rectangle = rect1.getBounds2D();
          display(rect2);
        }
   }
    class EventMouseMotionListener extends MouseMotionAdapter {
      public void mouseDragged(MouseEvent event) {
        if (rect1.contains(event.getX(), event.getY())) {
          rectangle = null;
          rect2 = rect1;
          p2 = event.getX();
          q2 = event.getY();
          p = p + p2 - p1;
          q = q + q2 - q1;
          p1 = p2;
          q1 = q2;
        }
        if (rect2 != null)
          display(rect2);
        canvas.repaint();
      }
    public void mouseMoved(MouseEvent event) {
         cursor = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
           }
        }
      public void display(Shape shape) {
      double p = rect2.getX();
      double q = rect2.getY();
      double width= rect2.getWidth();
      double height = rect2.getHeight();
      String st = "(" + Double.toString(p)+","+Double.toString(q) + ")";
      String sizeString = "(" + Double.toString(width) + ","+
        Double.toString(height) + ")";
      //label.setText(st);
    }
  }
} 

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Admin September 16, 2017 - tanpa komentar

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