From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001
From: Sven Eisenhauer <sven@sven-eisenhauer.net>
Date: Fri, 10 Nov 2023 15:11:48 +0100
Subject: add new repo

---
 .../hjp5/examples/Listing2904.java                 | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/Listing2904.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/Listing2904.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing2904.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2904.java
new file mode 100644
index 0000000..5bea4ee
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2904.java	
@@ -0,0 +1,92 @@
+/* Listing2904.java */
+
+import java.awt.*;
+import java.awt.event.*;
+import java.util.*;
+
+public class Listing2904
+extends Frame
+{
+  private Vector drawlist;
+  private Rectangle actrect;
+
+  public static void main(String[] args)
+  {
+    Listing2904 wnd = new Listing2904();
+    wnd.setLocation(200,200);
+    wnd.setSize(400,300);
+    wnd.setVisible(true);
+  }
+
+  public Listing2904()
+  {
+    super("Rechtecke zeichnen");
+    drawlist = new Vector();
+    actrect = new Rectangle(0,0,0,0);
+    addWindowListener(new MyWindowListener());
+    addMouseListener(new MyMouseListener());
+    addMouseMotionListener(new MyMouseMotionListener());
+  }
+
+  public void paint(Graphics g)
+  {
+    Rectangle r;
+    Enumeration e;
+
+    for (e = drawlist.elements(); e.hasMoreElements(); ) {
+      r = (Rectangle)e.nextElement();
+      g.drawRect(r.x, r.y, r.width, r.height);
+    }
+    if (actrect.x > 0 || actrect.y > 0) {
+      g.drawRect(
+        actrect.x,
+        actrect.y,
+        actrect.width,
+        actrect.height
+      );
+    }
+  }
+
+  class MyMouseListener
+  extends MouseAdapter
+  {
+    public void mousePressed(MouseEvent event)
+    {
+      actrect = new Rectangle(event.getX(),event.getY(),0,0);
+    }
+
+    public void mouseReleased(MouseEvent event)
+    {
+      if (actrect.width > 0 || actrect.height > 0) {
+        drawlist.addElement(actrect);
+      }
+      repaint();
+    }
+  }
+
+  class MyMouseMotionListener
+  extends MouseMotionAdapter
+  {
+    public void mouseDragged(MouseEvent event)
+    {
+      int x = event.getX();
+      int y = event.getY();
+      if (x > actrect.x && y > actrect.y) {
+        actrect.width = x - actrect.x;
+        actrect.height = y - actrect.y;
+      }
+      repaint();
+    }
+  }
+
+  class MyWindowListener
+  extends WindowAdapter
+  {
+    public void windowClosing(WindowEvent event)
+    {
+      setVisible(false);
+      dispose();
+      System.exit(0);
+    }
+  }
+}
\ No newline at end of file
-- 
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