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/Listing2906.java                 | 109 +++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/Listing2906.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/Listing2906.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing2906.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2906.java
new file mode 100644
index 0000000..77375f9
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing2906.java	
@@ -0,0 +1,109 @@
+/* Listing2906.java */
+
+import java.awt.*;
+import java.awt.event.*;
+
+public class Listing2906
+extends Frame
+implements KeyListener
+{
+  String msg1 = "";
+  String msg2 = "";
+
+  public static void main(String[] args)
+  {
+    Listing2906 wnd = new Listing2906();
+  }
+
+  public Listing2906()
+  {
+    super("Tastaturereignisse");
+    addKeyListener(this);
+    addWindowListener(new WindowClosingAdapter(true));
+    setBackground(Color.lightGray);
+    setSize(300,200);
+    setLocation(200,100);
+    setVisible(true);
+  }
+
+  public void paint(Graphics g)
+  {
+    if (msg1.length() > 0) {
+      draw3DRect(g,20,50,250,30);
+      g.setColor(Color.black);
+      g.drawString(msg1,30,70);
+    }
+    if (msg2.length() > 0) {
+      draw3DRect(g,20,100,250,30);
+      g.setColor(Color.black);
+      g.drawString(msg2,30,120);
+    }
+  }
+
+  void draw3DRect(Graphics g,int x,int y,int width,int height)
+  {
+    g.setColor(Color.darkGray);
+    g.drawLine(x,y,x,y+height);
+    g.drawLine(x,y,x+width,y);
+    g.setColor(Color.white);
+    g.drawLine(x+width,y+height,x,y+height);
+    g.drawLine(x+width,y+height,x+width,y);
+  }
+
+  public void keyPressed(KeyEvent event)
+  {
+    msg1 = "";
+    System.out.println(
+      "key pressed: " +
+      "key char = " + event.getKeyChar() + "  " +
+      "key code = " + event.getKeyCode()
+    );
+    if (event.getKeyChar() == KeyEvent.CHAR_UNDEFINED) {
+      int key = event.getKeyCode();
+      //Funktionstaste abfragen
+      if (key == KeyEvent.VK_F1) {
+        msg1 = "F1";
+      } else if (key == KeyEvent.VK_F2) {
+        msg1 = "F2";
+      } else if (key == KeyEvent.VK_F3) {
+        msg1 = "F3";
+      }
+      //Modifier abfragen
+      if (msg1.length() > 0) {
+        if (event.isAltDown()) {
+          msg1 = "ALT + " + msg1;
+        }
+        if (event.isControlDown()) {
+          msg1 = "STRG + " + msg1;
+        }
+        if (event.isShiftDown()) {
+          msg1 = "UMSCHALT + " + msg1;
+        }
+      }
+    }
+    repaint();
+  }
+
+  public void keyReleased(KeyEvent event)
+  {
+    System.out.println("key released");
+    msg1 = "";
+    repaint();
+  }
+
+  public void keyTyped(KeyEvent event)
+  {
+    char key = event.getKeyChar();
+    System.out.println("key typed: " + key);
+    if (key == KeyEvent.VK_BACK_SPACE) {
+      if (msg2.length() > 0) {
+        msg2 = msg2.substring(0,msg2.length() - 1);
+      }
+    } else if (key >= KeyEvent.VK_SPACE) {
+      if (msg2.length() < 40) {
+        msg2 += event.getKeyChar();
+      }
+    }
+    repaint();
+  }
+}
\ No newline at end of file
-- 
cgit v1.2.3