GrafikModel und Figur eingefügt

2023-12-18 10:58:58 +01:00
parent 22efa7c18f
commit 78c5d8eedf
7 changed files with 289 additions and 111 deletions
@@ -0,0 +1,121 @@
+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
+ */
+
+package ChatProgramm.model;
+
+import java.awt.Point;
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.logging.Logger;
+import java.util.prefs.Preferences;
+import ChatProgramm.util.OhmLogger;
+/**
+ *
+ * @author le
+ */
+public class GrafikModel
+{
+  private Figur aktuelleFigur;
+  private ArrayList<Figur> figuren;
+  private Preferences pref;
+ private static Logger lg = OhmLogger.getLogger();
+  
+  public GrafikModel()
+  {
+    aktuelleFigur = new Figur();
+    figuren = new ArrayList<>();
+  }
+  
+  public void addPoint(Point p)
+  {
+    aktuelleFigur.addPoint(p);
+  }
+
+  public List<Point> getPunkte()
+  {
+    return aktuelleFigur.getPunkte();
+  }
+  
+  public List<Figur> getFiguren(){
+    return Collections.unmodifiableList(figuren);
+  }
+  
+  
+  /**
+   * Persistenz via Serialisierung
+   * @param dateiname
+   * @throws FileNotFoundException
+   * @throws IOException 
+   */
+  public void speicherePunkte(String dateiname) throws FileNotFoundException, IOException
+  {
+    // an Preferences denken!!
+    FileOutputStream fos = new FileOutputStream(dateiname);
+    //wichtig Puffer -> Performance
+    BufferedOutputStream bos = new BufferedOutputStream(fos);
+    //Serialisierung
+    ObjectOutputStream oos = new ObjectOutputStream(bos);
+    oos.writeObject(figuren);
+    oos.flush(); // Puffer
+    oos.close();
+  }
+  
+  public void lesePunkte(String dateiname) throws FileNotFoundException, IOException, ClassNotFoundException
+  {
+    // an Preferences denken!!
+    FileInputStream fis = new FileInputStream(dateiname);
+    //wichtig Puffer -> Performance
+    BufferedInputStream bis = new BufferedInputStream(fis);
+    //Serialisierung
+    ObjectInputStream ois = new ObjectInputStream(bis);
+    Object daten = ois.readObject(); // Achtung
+//    if (daten instanceof ArrayList)
+//    {
+//      punkte = (ArrayList<Point>)daten;
+//    }
+    //eleganter
+    if (daten instanceof ArrayList liste)
+    {
+      figuren = liste;
+    }  
+ 
+  }  
+
+    public void endShape() {
+        figuren.add(aktuelleFigur);
+        aktuelleFigur = new Figur();
+    }
+  
+    /**
+   * Bestimmt die Adresse des zuletzt besuchten Ordners
+   * @return letzter Ordner
+   */
+  public String getPref()
+  {
+        pref = Preferences.userNodeForPackage(getClass());
+        return pref.get("lastDirectory", null);
+  }
+
+  /**
+   * Setzt die Preferenz zu dem zuletzt besuchten Ordner
+   * @param lastDirectory Bezeichner "lastDirectory"
+   * @param lastAdress Adresse des zuletzt besuchten Ordners
+   */
+  public void putPref(String lastDirectory, String lastAdress)
+  {
+    pref.put(lastDirectory, lastAdress);
+  }
+}
+
+