src/main/java/serializer/DrawerWithSave.java

 package serializer;
 
-import javafx.scene.canvas.Canvas;
 import javafx.scene.control.Alert;
 import javafx.stage.FileChooser;
-import shape.Shape;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.List;
-import java.util.stream.Collectors;
 
 
 public class DrawerWithSave extends state.Drawer {

src/main/java/serializer/ShapeReader.java

@@ -7,7 +7,6 @@ import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
 import java.util.List;
-import java.util.stream.Collector;
 
 public class ShapeReader {
     public static List<Shape> read(File file) throws IOException {

src/main/java/shape/AbstractShape.java

+package shape;
+
+import javafx.geometry.Point2D;
+import javafx.scene.canvas.GraphicsContext;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public abstract class AbstractShape implements Shape {
+
+    protected List<Point2D> points = new ArrayList<>();
+
+    public void addPoints(Point2D... points){
+        this.points.addAll(Arrays.asList(points));
+    }
+
+    public int pointsCount() {
+        return points.size();
+    }
+
+
+    public Point2D point(int index) {
+        if( index >= 0 && index < points.size()){
+            return points.get(index);
+        }else {
+            throw new IndexOutOfBoundsException("Index out of bounds");
+        }
+    }
+
+    public abstract void draw(GraphicsContext context) ;
+}

src/main/java/shape/App.java

@@ -7,29 +7,26 @@ import javafx.scene.Scene;
 import javafx.scene.canvas.Canvas;
 import javafx.scene.canvas.GraphicsContext;
 import javafx.scene.paint.Color;
-import javafx.scene.paint.Paint;
 import javafx.stage.Stage;
 
 
 
 public class App extends Application {
 
-    public static void main(String[] args) {
-        launch(args);
-    }
-
     @Override
     public void start(Stage primaryStage) {
+        Drawer drawer = new Drawer(400, 400);
+
         Group root = new Group();
-        Canvas canvas = new Canvas(130, 110);
-        GraphicsContext graphicsContext = canvas.getGraphicsContext2D();
-        ShapeContainer shapeContainer = new ShapeContainer();
-        graphicsContext.setFill(Color.AQUAMARINE);
-        graphicsContext.fillOval(10,10,10,10);
-        shapeContainer.addShape(new Rectangle(Color.BLUE,new Point2D(10,10), new Point2D(40,40)));
-        shapeContainer.draw(graphicsContext);
-        root.getChildren().add(canvas);
-        primaryStage.setScene(new Scene(root));
+        root.getChildren().add(drawer.getCanvas());
+
+        Scene scene = new Scene(root, 400, 400);
+
+        primaryStage.setTitle("JavaFX Drawer");
+        primaryStage.setScene(scene);
         primaryStage.show();
     }
+    public static void main(String[] args) {
+        launch(args);
+    }
 }
\ No newline at end of file

src/main/java/shape/BorderDecorator.java

+package shape;
+
+import javafx.geometry.Point2D;
+import javafx.scene.canvas.GraphicsContext;
+import javafx.scene.paint.Color;
+
+public class BorderDecorator extends Decorator {
+
+    @Override
+    public void paint(GraphicsContext graphicsContext) {
+
+    }
+
+    @Override
+    public boolean contains(double x, double y) {
+        return false;
+    }
+
+    @Override
+    public void translate(double dx, double dy) {
+
+    }
+}

src/main/java/shape/CenterDecorator.java

+package shape;
+
+import javafx.geometry.Point2D;
+import javafx.scene.canvas.GraphicsContext;
+import javafx.scene.paint.Color;
+
+public class CenterDecorator extends Decorator{
+
+    @Override
+    public void paint(GraphicsContext graphicsContext) {
+
+    }
+
+    @Override
+    public boolean contains(double x, double y) {
+        return false;
+    }
+
+    @Override
+    public void translate(double dx, double dy) {
+
+    }
+}

src/main/java/shape/Circle.java

@@ -2,24 +2,39 @@ package shape;
 
 import javafx.geometry.Point2D;
 import javafx.scene.canvas.GraphicsContext;
+import javafx.scene.paint.Color;
 
 public class Circle implements Shape {
 
-    public Circle(double x, double y, double sqrt) {
+    private double radius, x, y;
+
+    public Circle(double x, double y, double radius) {
+        this.x = x;
+        this.y = y;
+        this.radius = radius;
     }
 
+
     @Override
-    public int pointsCount() {
-        return 0;
+    public void paint(GraphicsContext graphicsContext) {
+        graphicsContext.setStroke(Color.RED);
+        graphicsContext.strokeOval(x-radius, y-radius, 2 * radius, 2 * radius);
     }
 
     @Override
-    public Point2D point(int index) {
-        return null;
+    public boolean contains(double x, double y) {
+        double dx = x - this.x;
+        double dy = y - this.y;
+        return Math.sqrt(dx*dx + dy*dy) <= radius;
     }
 
     @Override
-    public void draw(GraphicsContext context) {
-
+    public void translate(double dx, double dy) {
+        this.x += dx;
+        this.y += dy;
     }
+    public void updateRadius(double newX, double newY) {
+        this.radius = Math.sqrt(Math.pow(newX - this.x, 2) + Math.pow(newY - this.y, 2));
+    }
+
 }

src/main/java/shape/Decorator.java

+package shape;
+
+import javafx.geometry.Point2D;
+import javafx.scene.canvas.GraphicsContext;
+
+public abstract class Decorator implements Shape {
+
+}

src/main/java/shape/Drawer.java

+package shape;
+
+import javafx.scene.canvas.Canvas;
+import javafx.scene.canvas.GraphicsContext;
+import javafx.scene.input.KeyCode;
+import javafx.scene.input.MouseButton;
+
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Drawer {
+    private List<Shape> shapes;
+//    private double width;
+//    private double height;
+    private Canvas canvas;
+    private GraphicsContext gc;
+
+    private  String currentShapeType = "rectangle";
+    private Shape tempShape = null;
+
+    public Drawer(double width, double height) {
+//        this.width = width;
+//        this.height = height;
+        shapes = new ArrayList<>();
+        canvas = new Canvas(width,height);
+        gc = canvas.getGraphicsContext2D();
+        setupMouseHandlers();
+        setupKeyHandlers();
+    }
+
+    public void add(Shape shape) {
+        shapes.add(shape);
+    }
+    public void repaint(){
+        gc.clearRect(0, 0, canvas.getWidth(), canvas.getHeight());
+        for(Shape shape : shapes){
+            shape.paint(gc);
+        }
+        if (tempShape != null){
+            tempShape.paint(gc);
+        }
+    }
+
+    private void setupMouseHandlers(){
+        canvas.setOnMousePressed(event -> {
+            if(event.getButton() == MouseButton.PRIMARY){
+                double x = event.getX();
+                double y = event.getY();
+             //   tempShape = new Rectangle(x, y, 0, 0);
+                if (currentShapeType.equals("rectangle")) {
+                    tempShape = new Rectangle(x, y, 0, 0);
+                }else if (currentShapeType.equals("circle")) {
+                    tempShape = new Circle(x, y, 0);
+                }
+            }
+        });
+
+        canvas.setOnMouseDragged(event ->{
+            if (tempShape != null) {
+                double x = event.getX();
+                double y = event.getY();
+                if (tempShape instanceof Rectangle){
+                    ((Rectangle) tempShape).updateSize(x,y);
+                }else if (tempShape instanceof Circle){
+                    ((Circle) tempShape).updateRadius(x,y);
+                }
+                repaint();
+            }
+        });
+
+        canvas.setOnMouseReleased(event -> {
+            if(event.getButton() == MouseButton.PRIMARY && tempShape != null){
+                shapes.add(tempShape);
+                tempShape = null;
+                repaint();
+            }
+        });
+    }
+    private void setupKeyHandlers(){
+        canvas.setFocusTraversable(true);
+        canvas.setOnKeyPressed(event -> {
+            if (event.getCode() == KeyCode.R){
+                currentShapeType = "rectangle";
+                System.out.println("Current shape type is: " + currentShapeType);
+            }else if (event.getCode() == KeyCode.C){
+                currentShapeType = "circle";
+                System.out.println("Current shape type is: " + currentShapeType);
+            }
+        });
+    }
+
+   /* public Shape shapeContaining(double x, double y){
+        for(Shape shape : shapes){
+            if (shape.contains(x, y)){
+                return shape;
+            }
+        }
+        return null;
+    }*/
+
+    public Canvas getCanvas() {
+        return canvas;
+    }
+}

src/main/java/shape/Polygon.java

+package shape;
+
+import javafx.geometry.Point2D;
+import javafx.scene.canvas.GraphicsContext;
+import javafx.scene.paint.Color;
+
+public class Polygon extends AbstractShape {
+
+    private final Color color;
+
+    public Polygon(Color color, Point2D... points) {
+        this.color = color;
+        addPoints(points);
+    }
+
+
+    @Override
+    public void draw(GraphicsContext context) {
+        context.setStroke(color);
+        context.beginPath();
+        context.moveTo(points.get(0).getX(), points.get(0).getY());
+        for (int i = 1; i < pointsCount() ; i++) {
+            context.lineTo(points.get(i).getX(), points.get(i).getY());
+        }
+        context.closePath();
+        context.stroke();
+
+    }
+
+    @Override
+    public void paint(GraphicsContext graphicsContext) {
+
+    }
+
+    @Override
+    public boolean contains(double x, double y) {
+        return false;
+    }
+
+    @Override
+    public void translate(double dx, double dy) {
+
+    }
+}

src/main/java/shape/Rectangle.java

@@ -5,23 +5,43 @@ import javafx.scene.canvas.GraphicsContext;
 import javafx.scene.paint.Color;
 
 public class Rectangle implements Shape{
-    Color color;
-    Rectangle(Color color, Point2D point0, Point2D point1){
-        this.color = color;
+
+    private double x;
+    private double y;
+    private double width;
+    private double height;
+
+    public Rectangle(double x, double y, double width, double height) {
+        this.x = x;
+        this.y = y;
+        this.width = width;
+        this.height = height;
     }
 
     @Override
-    public int pointsCount() {
-        return 0;
+    public void paint(GraphicsContext graphicsContext) {
+        graphicsContext.setStroke(Color.BLACK);
+        graphicsContext.strokeRect(x, y, width, height);
+
     }
 
     @Override
-    public Point2D point(int index) {
-        return null;
+    public boolean contains(double x, double y) {
+        return x>= this.x && x<= this.x + this.width
+                && y>= this.y && y<= this.y + this.height;
     }
 
     @Override
-    public void draw(GraphicsContext context) {
-
+    public void translate(double dx, double dy) {
+        x += dx;
+        y += dy;
+    }
+    public void updateSize(double newX, double newY) {
+        this.width = Math.abs(newX - this.x);
+        this.height = Math.abs(newY - this.y);
+        if (newX < this.x && newY < this.y) {
+            this.x = newX;
+            this.y = newY;
+        }
     }
 }

src/main/java/shape/Shape.java

@@ -4,7 +4,7 @@ import javafx.geometry.Point2D;
 import javafx.scene.canvas.GraphicsContext;
 
 public interface Shape {
-    int pointsCount();
-    Point2D point(int index);
-    void draw(GraphicsContext context);
+    void paint(GraphicsContext graphicsContext);
+    boolean contains(double x, double y);
+    void translate(double dx, double dy);
 }

src/main/java/shape/ShapeContainer.java

@@ -9,10 +9,10 @@ public class ShapeContainer{
 
     private List<Shape> shapes = new ArrayList<>();
 
-    public void addShape(Shape shape){}
+    public void addShape(Shape shape){
+        shapes.add(shape);
+    }
 
     public void  draw(GraphicsContext context){
-        for(Shape shape : shapes)
-            shape.draw(context);
     }
 }

src/main/java/state/Drawer.java

 package state;
 
 import javafx.scene.canvas.Canvas;
-import shape.Circle;
 import shape.Shape;
 
 import java.util.ArrayList;