1 files changed, 170 insertions, 0 deletions
diff --git a/Master/Reference Architectures and Patterns/hjp5/examples/Segment7.java b/Master/Reference Architectures and Patterns/hjp5/examples/Segment7.java
new file mode 100644
index 0000000..8306cd5
--- /dev/null
+++ b/Master/Reference Architectures and Patterns/hjp5/examples/Segment7.java
@@ -0,0 +1,170 @@
+/* Segment7.java */
+
+import java.awt.*;
+import java.awt.event.*;
+
+class Segment7
+extends Canvas
+{
+  private int digit;
+  private boolean hasfocus;
+  private int[][] polysx = {
+    { 1, 2, 8, 9, 8, 2},    //Segment 0
+    { 9,10,10, 9, 8, 8},    //Segment 1
+    { 9,10,10, 9, 8, 8},    //Segment 2
+    { 1, 2, 8, 9, 8, 2},    //Segment 3
+    { 1, 2, 2, 1, 0, 0},    //Segment 4
+    { 1, 2, 2, 1, 0, 0},    //Segment 5
+    { 1, 2, 8, 9, 8, 2},    //Segment 6
+  };
+  private int[][] polysy = {
+    { 1, 0, 0, 1, 2, 2},    //Segment 0
+    { 1, 2, 8, 9, 8, 2},    //Segment 1
+    { 9,10,16,17,16,10},    //Segment 2
+    {17,16,16,17,18,18},    //Segment 3
+    { 9,10,16,17,16,10},    //Segment 4
+    { 1, 2, 8, 9, 8, 2},    //Segment 5
+    { 9, 8, 8, 9,10,10},    //Segment 6
+  };
+  private int[][] digits = {
+    {1,1,1,1,1,1,0},         //Ziffer 0
+    {0,1,1,0,0,0,0},         //Ziffer 1
+    {1,1,0,1,1,0,1},         //Ziffer 2
+    {1,1,1,1,0,0,1},         //Ziffer 3
+    {0,1,1,0,0,1,1},         //Ziffer 4
+    {1,0,1,1,0,1,1},         //Ziffer 5
+    {1,0,1,1,1,1,1},         //Ziffer 6
+    {1,1,1,0,0,0,0},         //Ziffer 7
+    {1,1,1,1,1,1,1},         //Ziffer 8
+    {1,1,1,1,0,1,1}          //Ziffer 9
+  };
+
+  public Segment7()
+  {
+    this(0);
+  }
+
+  public Segment7(int digit)
+  {
+    super();
+    this.digit = digit;
+    this.hasfocus = false;
+    enableEvents(AWTEvent.COMPONENT_EVENT_MASK);
+    enableEvents(AWTEvent.FOCUS_EVENT_MASK);
+    enableEvents(AWTEvent.MOUSE_EVENT_MASK);
+    enableEvents(AWTEvent.KEY_EVENT_MASK);
+  }
+
+  public Dimension getPreferredSize()
+  {
+    return new Dimension(5*10,5*18);
+  }
+
+  public Dimension getMinimumSize()
+  {
+    return new Dimension(1*10,1*18);
+  }
+
+  public boolean isFocusTraversable()
+  {
+    return true;
+  }
+
+  public void paint(Graphics g)
+  {
+    Color darkred  = new Color(127,0,0);
+    Color lightred = new Color(255,0,0);
+    Color yellow   = new Color(255,255,0);
+    //dx und dy berechnen
+    int dx = getSize().width / 10;
+    int dy = getSize().height / 18;
+    //Hintergrund
+    g.setColor(darkred);
+    g.fillRect(0,0,getSize().width,getSize().height);
+    //Segmente
+    if (hasfocus) {
+      g.setColor(yellow);
+    } else {
+      g.setColor(lightred);
+    }
+    for (int i=0; i < 7; ++i) { //alle Segmente
+      if (digits[digit][i] == 1) {
+        Polygon poly = new Polygon();
+        for (int j = 0; j < 6; ++j) { //alle Eckpunkte
+          poly.addPoint(dx*polysx[i][j],dy*polysy[i][j]);
+        }
+        g.fillPolygon(poly);
+      }
+    }
+    //Trennlinien
+    g.setColor(darkred);
+    g.drawLine(0,0,dx*10,dy*10);
+    g.drawLine(0,8*dy,10*dx,18*dy);
+    g.drawLine(0,10*dy,10*dx,0);
+    g.drawLine(0,18*dy,10*dx,8*dy);
+  }
+
+  public int getValue()
+  {
+    return digit;
+  }
+
+  public void setValue(int value)
+  {
+    digit = value % 10;
+  }
+
+  protected void processComponentEvent(ComponentEvent event)
+  {
+    if (event.getID() == ComponentEvent.COMPONENT_SHOWN) {
+      requestFocus();
+    }
+    super.processComponentEvent(event);
+  }
+
+  protected void processFocusEvent(FocusEvent event)
+  {
+    if (event.getID() == FocusEvent.FOCUS_GAINED) {
+      hasfocus = true;
+      repaint();
+    } else if (event.getID() == FocusEvent.FOCUS_LOST) {
+      hasfocus = false;
+      repaint();
+    }
+    super.processFocusEvent(event);
+  }
+
+  protected void processMouseEvent(MouseEvent event)
+  {
+    if (event.getID() == MouseEvent.MOUSE_PRESSED) {
+      requestFocus();
+      if (!event.isShiftDown()) {
+        if (event.isMetaDown()) {
+          setValue(getValue() + 1); //increment by 1
+        } else {
+          setValue(getValue() + 9); //decrement by 1
+        }
+      }
+      repaint();
+    }
+    super.processMouseEvent(event);
+  }
+
+  protected void processKeyEvent(KeyEvent event)
+  {
+    if (event.getID() == KeyEvent.KEY_PRESSED) {
+      char key = event.getKeyChar();
+      if (key >= '0' && key <= '9') {
+        setValue(key - '0');
+        repaint();
+      } else if (key == '+') {
+        setValue(getValue() + 1); //increment by 1
+        repaint();
+      } else if (key == '-') {
+        setValue(getValue() + 9); //decrement by 1
+        repaint();
+      }
+    }
+    super.processKeyEvent(event);
+  }
+}
+\ No newline at end of file