Init

src/mvcgrafik/Start.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Main.java to edit this template
+ */
+
+package mvcgrafik;
+
+import javax.swing.JOptionPane;
+import javax.swing.UIManager;
+import mvcgrafik.controller.GrafikController;
+import mvcgrafik.model.GrafikModel;
+import mvcgrafik.view.GrafikFrame;
+import mvcgrafik.view.GrafikView;
+
+/**
+ * Builder Class
+ * @author le
+ */
+public class Start
+{
+  public Start()
+  {
+    GrafikModel model = new GrafikModel();
+    GrafikFrame frm = new GrafikFrame();
+    GrafikView view = frm.getgZeichenflaeche();
+    view.setModel(model);
+    GrafikController controller = new GrafikController(view, model);
+    controller.registerEvents();
+    frm.setVisible(true);
+  }
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String[] args) 
+  {
+    try
+    {
+      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+    }
+    catch (Exception ex)
+    {
+      JOptionPane.showMessageDialog(null, ex.toString());
+    }
+    new Start();
+  }
+}

src/mvcgrafik/controller/GrafikController.java

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+/*
+ * 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 mvcgrafik.controller;
+
+import java.awt.Point;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseMotionListener;
+import mvcgrafik.model.GrafikModel;
+import mvcgrafik.view.GrafikView;
+
+/**
+ *
+ * @author le
+ */
+public class GrafikController extends MouseAdapter implements MouseMotionListener
+{
+  private GrafikView view;
+  private GrafikModel model;
+  
+  public GrafikController(GrafikView view, GrafikModel model)
+  {
+    this.view = view;
+    this.model = model;
+  }
+  
+  public void registerEvents()
+  {
+    view.addMouseMotionListener(this);
+    view.addMouseListener(this);
+  }
+
+  @Override
+  public void mouseDragged(MouseEvent evt)
+  {
+    Point p = evt.getPoint();
+    model.addPoint(p);
+    view.drawPoint(p);
+  }
+
+  @Override
+  public void mouseMoved(MouseEvent e)
+  {
+  }
+  
+  @Override
+  public void mouseReleased(MouseEvent evt)
+  {
+      model.endShape();
+    if (evt.getButton() == MouseEvent.BUTTON3)
+    {
+      view.doPrint();
+    }
+  }
+}

src/mvcgrafik/model/GrafikModel.java

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+/*
+ * 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 mvcgrafik.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;
+
+/**
+ *
+ * @author le
+ */
+public class GrafikModel
+{
+  private ArrayList<Point> punkte;
+  private ArrayList<ArrayList> figuren;
+  
+  public GrafikModel()
+  {
+    punkte = new ArrayList<>();
+    figuren = new ArrayList<>();
+  }
+  
+  public void addPoint(Point p)
+  {
+    punkte.add(p);
+  }
+
+  public List<Point> getPunkte()
+  {
+    return Collections.unmodifiableList(punkte);
+  }
+  
+  public List<ArrayList> 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(punkte);
+    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)
+    {
+      punkte = liste;
+    }
+    
+  }  
+
+    public void endShape() {
+        figuren.add(punkte);
+        punkte.clear();
+    }
+  
+  
+  
+}

src/mvcgrafik/view/GrafikFrame.form

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+<?xml version="1.0" encoding="UTF-8" ?>
+
+<Form version="1.3" maxVersion="1.9" type="org.netbeans.modules.form.forminfo.JFrameFormInfo">
+  <Properties>
+    <Property name="defaultCloseOperation" type="int" value="3"/>
+  </Properties>
+  <SyntheticProperties>
+    <SyntheticProperty name="formSize" type="java.awt.Dimension" value="-84,-19,0,5,115,114,0,18,106,97,118,97,46,97,119,116,46,68,105,109,101,110,115,105,111,110,65,-114,-39,-41,-84,95,68,20,2,0,2,73,0,6,104,101,105,103,104,116,73,0,5,119,105,100,116,104,120,112,0,0,1,-100,0,0,2,28"/>
+    <SyntheticProperty name="formSizePolicy" type="int" value="0"/>
+    <SyntheticProperty name="generateSize" type="boolean" value="true"/>
+    <SyntheticProperty name="generateCenter" type="boolean" value="true"/>
+  </SyntheticProperties>
+  <AuxValues>
+    <AuxValue name="FormSettings_autoResourcing" type="java.lang.Integer" value="0"/>
+    <AuxValue name="FormSettings_autoSetComponentName" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_generateFQN" type="java.lang.Boolean" value="true"/>
+    <AuxValue name="FormSettings_generateMnemonicsCode" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_i18nAutoMode" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_layoutCodeTarget" type="java.lang.Integer" value="1"/>
+    <AuxValue name="FormSettings_listenerGenerationStyle" type="java.lang.Integer" value="0"/>
+    <AuxValue name="FormSettings_variablesLocal" type="java.lang.Boolean" value="false"/>
+    <AuxValue name="FormSettings_variablesModifier" type="java.lang.Integer" value="2"/>
+  </AuxValues>
+
+  <Layout class="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout"/>
+  <SubComponents>
+    <Container class="mvcgrafik.view.GrafikView" name="gZeichenflaeche">
+      <Constraints>
+        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout" value="org.netbeans.modules.form.compat2.layouts.DesignBorderLayout$BorderConstraintsDescription">
+          <BorderConstraints direction="Center"/>
+        </Constraint>
+      </Constraints>
+
+      <Layout class="org.netbeans.modules.form.compat2.layouts.DesignAbsoluteLayout">
+        <Property name="useNullLayout" type="boolean" value="true"/>
+      </Layout>
+    </Container>
+  </SubComponents>
+</Form>

src/mvcgrafik/view/GrafikFrame.java

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+/*
+ * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
+ * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
+ */
+package mvcgrafik.view;
+
+/**
+ *
+ * @author le
+ */
+public class GrafikFrame extends javax.swing.JFrame
+{
+  /**
+   * @return the gZeichenflaeche
+   */
+  public mvcgrafik.view.GrafikView getgZeichenflaeche()
+  {
+    return gZeichenflaeche;
+  }
+
+  /**
+   * Creates new form GrafikFrame
+   */
+  public GrafikFrame()
+  {
+    initComponents();
+  }
+
+  /**
+   * This method is called from within the constructor to initialize the form.
+   * WARNING: Do NOT modify this code. The content of this method is always
+   * regenerated by the Form Editor.
+   */
+  @SuppressWarnings("unchecked")
+  // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
+  private void initComponents()
+  {
+
+    gZeichenflaeche = new mvcgrafik.view.GrafikView();
+
+    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
+    getContentPane().add(gZeichenflaeche, java.awt.BorderLayout.CENTER);
+
+    setSize(new java.awt.Dimension(540, 412));
+    setLocationRelativeTo(null);
+  }// </editor-fold>//GEN-END:initComponents
+
+  /**
+   * @param args the command line arguments
+   */
+  public static void main(String args[])
+  {
+    /* Set the Nimbus look and feel */
+    //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
+    /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
+         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
+     */
+    try
+    {
+      for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels())
+      {
+        if ("Nimbus".equals(info.getName()))
+        {
+          javax.swing.UIManager.setLookAndFeel(info.getClassName());
+          break;
+        }
+      }
+    }
+    catch (ClassNotFoundException ex)
+    {
+      java.util.logging.Logger.getLogger(GrafikFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    catch (InstantiationException ex)
+    {
+      java.util.logging.Logger.getLogger(GrafikFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    catch (IllegalAccessException ex)
+    {
+      java.util.logging.Logger.getLogger(GrafikFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    catch (javax.swing.UnsupportedLookAndFeelException ex)
+    {
+      java.util.logging.Logger.getLogger(GrafikFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
+    }
+    //</editor-fold>
+
+    /* Create and display the form */
+    java.awt.EventQueue.invokeLater(new Runnable()
+    {
+      public void run()
+      {
+        new GrafikFrame().setVisible(true);
+      }
+    });
+  }
+
+  // Variables declaration - do not modify//GEN-BEGIN:variables
+  private mvcgrafik.view.GrafikView gZeichenflaeche;
+  // End of variables declaration//GEN-END:variables
+}

src/mvcgrafik/view/GrafikView.java

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+/*
+ * 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 mvcgrafik.view;
+
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Point;
+import java.awt.geom.Rectangle2D;
+import java.awt.geom.Line2D;
+import java.awt.print.PageFormat;
+import java.awt.print.Printable;
+import java.awt.print.PrinterException;
+import java.awt.print.PrinterJob;
+import java.util.ArrayList;
+import javax.print.attribute.HashPrintRequestAttributeSet;
+import javax.print.attribute.standard.DialogTypeSelection;
+import javax.swing.JComponent;
+import javax.swing.JOptionPane;
+import mvcgrafik.model.GrafikModel;
+
+
+/**
+ *
+ * @author le
+ */
+public class GrafikView extends JComponent implements Printable
+{
+  private static Dimension EINS = new Dimension(1, 1); // Dimension ist eine Klasse die width udn height hält
+  private Rectangle2D.Float pixel;
+  private Line2D.Float line;
+  private GrafikModel model;
+  
+  public GrafikView()
+  {
+    pixel = new Rectangle2D.Float();
+  }
+
+  public void setModel(GrafikModel model)
+  {
+    this.model = model;
+  }
+  
+  
+
+  public void drawPoint(Point p)
+  {
+      
+    Graphics2D g2 = (Graphics2D)this.getGraphics(); // gefährlich!
+    paintComponent(g2);
+//    pixel.setFrame(p, EINS);
+//    g2.draw(pixel);
+
+
+    //Um die aktuelle Figur zu zeichnen
+    int pathSize = model.getPunkte().size();
+    
+    for(int i=0; i < pathSize-1; i++)
+    {
+        Point from = model.getPunkte().get(i);
+        Point to = model.getPunkte().get(i+1);
+        
+        line = new Line2D.Float(from.x,from.y,to.x,to.y) {};
+        g2.draw(line);
+    }
+    
+    //Um die fertigen Figuren zu zeichnen 
+    model.getFiguren().forEach(figure->
+    {
+        ArrayList<Point> currentPath = new ArrayList<>(figure);
+        int figurePath = currentPath.size();
+    
+        for(int i=0; i < figurePath-1; i++)
+        {
+            Point from = currentPath.get(i);
+            Point to = model.getPunkte().get(i+1);
+
+            line = new Line2D.Float(from.x,from.y,to.x,to.y) {};
+            g2.draw(line);
+        }
+        
+    });
+  
+    g2.dispose();  //SEEEEHHHHRRRR WICHTIG!!!!!!!
+  }
+  
+  public void paintComponent(Graphics g)
+  {
+    if (model == null) return;
+    super.paintComponent(g);
+    Graphics2D g2 = (Graphics2D)g;
+    
+    
+//    int pathSize = model.getPunkte().size();
+//    
+//    for(int i=0; i < pathSize-1; i++)
+//    {
+//        Point from = model.getPunkte().get(i);
+//        Point to = model.getPunkte().get(i+1);
+//        
+//        line = new Line2D.Float(from.x,from.y,to.x,to.y) {};
+//        g2.draw(line);
+//    }
+    
+    model.getFiguren().forEach(figure->
+    {
+        ArrayList<Point> currentPath = new ArrayList<>(figure);
+        int figurePath = currentPath.size();
+    
+    for(int i=0; i < figurePath-1; i++)
+    {
+        Point from = currentPath.get(i);
+        Point to = model.getPunkte().get(i+1);
+        
+        line = new Line2D.Float(from.x,from.y,to.x,to.y) {};
+        g2.draw(line);
+    }
+        
+    });
+    
+    
+    
+//    model.getPunkte().forEach(p ->
+//    {
+//      pixel.setFrame(p, EINS);
+//      g2.draw(pixel);
+//    });
+
+    
+  }
+  
+//  public void drawPath(ArrayList<Point> path){
+//    Graphics2D g2 = (Graphics2D)this.getGraphics();
+//      
+//    int pathSize = path.size();
+//    
+//    for(int i=0; i < pathSize-1; i++)
+//    {
+//        Point from = model.getPunkte().get(i);
+//        Point to = model.getPunkte().get(i+1);
+//        
+//        line = new Line2D.Float(from.x,from.y,to.x,to.y) {};
+//        g2.draw(line);
+//    }
+//    
+//    g2.dispose();
+//  
+//  }
+  
+  public void doPrint()
+  {
+    HashPrintRequestAttributeSet printSet =
+     new HashPrintRequestAttributeSet();
+    printSet.add(DialogTypeSelection.NATIVE);
+    PrinterJob pj = PrinterJob.getPrinterJob();
+    pj.setPrintable(this);
+    //Dialog
+    if (pj.printDialog(printSet))
+    {
+      try
+      {
+        pj.print(printSet);
+      }
+      catch (Exception ex)
+      {
+        JOptionPane.showMessageDialog(this, ex.toString());
+      }
+    }
+  }
+
+  @Override
+  public int print(Graphics gp, PageFormat pf, int pageIndex) throws PrinterException
+  {
+    Graphics2D g2p = (Graphics2D)gp;
+    if (pageIndex == 0)
+    {
+      g2p.translate(pf.getImageableX(), pf.getImageableY());
+      g2p.scale(pf.getImageableWidth() / this.getWidth(),
+                pf.getImageableHeight() / this.getHeight());
+      super.print(g2p);
+      return Printable.PAGE_EXISTS;
+    }
+    else
+    {
+      return Printable.NO_SUCH_PAGE; // wichtig sonst Papiervernichtung
+    }
+  }
+}