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/Listing3801.java                 | 73 ++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Master/Reference Architectures and Patterns/hjp5/examples/Listing3801.java

(limited to 'Master/Reference Architectures and Patterns/hjp5/examples/Listing3801.java')

diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Listing3801.java b/Master/Reference Architectures and Patterns/hjp5/examples/Listing3801.java
new file mode 100644
index 0000000..8a78326
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Listing3801.java	
@@ -0,0 +1,73 @@
+/* Listing3801.java */
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+
+public class Listing3801
+extends JFrame
+{
+  public Listing3801()
+  {
+    super("JScrollPane");
+    addWindowListener(new WindowClosingAdapter(true));
+    //Dialogpanel erzeugen
+    JPanel panel = new JPanel();
+    panel.setLayout(new GridLayout(10, 10));
+    for (int i = 1; i <= 100; ++i) {
+      panel.add(new JCheckBox("Frage " + i));
+    }
+    //JScrollPane erzeugen
+    JScrollPane scroll = new JScrollPane(panel);
+    scroll.setCorner(
+      JScrollPane.UPPER_RIGHT_CORNER,
+      new JLabel("1", JLabel.CENTER)
+    );
+    scroll.setCorner(
+      JScrollPane.LOWER_RIGHT_CORNER,
+      new JLabel("2", JLabel.CENTER)
+    );
+    scroll.setColumnHeaderView(new ColumnHeader(panel, 10));
+    //JScrollPane zur ContentPane hinzufügen
+    getContentPane().add(scroll, BorderLayout.CENTER);
+  }
+
+  public static void main(String[] args)
+  {
+    Listing3801 frame = new Listing3801();
+    frame.setLocation(100, 100);
+    frame.setSize(300, 150);
+    frame.setVisible(true);
+  }
+}
+
+class ColumnHeader
+extends JComponent
+{
+  JComponent component;
+  int        columns;
+
+  public ColumnHeader(JComponent component, int columns)
+  {
+    this.component = component;
+    this.columns   = columns;
+  }
+
+  public void paintComponent(Graphics g)
+  {
+    int width = component.getSize().width;
+    int height = getSize().height;
+    int colwid = width / columns;
+    for (int i = 0; i < columns; ++i) {
+      g.setColor(i % 2 == 0 ? Color.yellow : Color.gray);
+      g.fillRect(i * colwid, 0, colwid, height);
+    }
+    g.setColor(Color.black);
+    g.drawLine(0, height - 1, width, height - 1);
+  }
+
+  public Dimension getPreferredSize()
+  {
+    return new Dimension(component.getSize().width, 20);
+  }
+}
\ No newline at end of file
-- 
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