hw4: init

hw4/.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

hw4/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

hw4/.idea/codeStyles/codeStyleConfig.xml

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+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>

hw4/.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="Eslint" enabled="true" level="WARNING" enabled_by_default="true" />
+  </profile>
+</component>

hw4/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-22" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

hw4/.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/hw4.iml" filepath="$PROJECT_DIR$/hw4.iml" />
+    </modules>
+  </component>
+</project>

hw4/.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

hw4/README.md

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+# Programming Assignment 4 - Shape Displayer
+
+## Requirements
+
+The user interacts with the application as follows:
+
+- Initially, the program displays three buttons on the top of the frame and a
+  blank large area of a user-defined JPanel below the buttons. The buttons
+  display a car, a snow man, and a composite shape of your choice, respectively.
+  You are allowed to borrow the CarShape.java from the text book. Make sure to
+  acknowledge that the code is from the text book. The composite shape of your
+  choice should consist of at least 4 primitive shapes, but doesn't have to be
+  fancy.
+- When the user clicks on one of the buttons, the shape displayed on the clicked
+  button becomes the current shape. The icon representing the current shape
+  should outline the shape as shown below in the sample output. When a mouse is
+  clicked on the user-defined JPanel, the current shape is drawn on the position
+  which the mouse was pressed on.
+- The current shape can be changed by clicking one of the buttons.
+- The application should be reusable by any CompositeShape.
+- Your design should be object-oriented including ShapeDisplayer(with main
+  method), CarShape, SnowMan, and Your_own_shape classes. Also, it should
+  include interface CompositeShape.java and a concrete class ShapeIcon. You may
+  include more classes to your design. 

hw4/hw4.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

hw4/src/ShapeDisplayer.java

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+import javax.swing.*;
+import java.awt.*;
+import java.awt.geom.Rectangle2D;
+
+public class ShapeDisplayer {
+    public static void main(String[] args) {
+        // Create and configure the main frame on the Event Dispatch Thread
+        SwingUtilities.invokeLater(() -> {
+            JFrame frame = new JFrame("Mancala");
+            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            frame.setSize(800, 400);
+
+            // Create buttons panel
+            JPanel buttonPanel = new JPanel();
+            buttonPanel.setLayout(new FlowLayout());
+
+            // Create placeholder shapes
+            JButton carButton = new JButton(new PlaceholderIcon(Color.RED));
+            JButton snowmanButton = new JButton(new PlaceholderIcon(Color.BLUE));
+            JButton compositeButton = new JButton(new PlaceholderIcon(Color.GREEN));
+
+
+            // Add buttons to the panel
+            buttonPanel.add(carButton);
+            buttonPanel.add(snowmanButton);
+            buttonPanel.add(compositeButton);
+
+            // Add buttons panel to the top of the frame
+            frame.add(buttonPanel, BorderLayout.NORTH);
+
+            // Add drawing panel
+            JPanel drawingPanel = new JPanel();
+            drawingPanel.setBackground(Color.WHITE);
+            frame.add(drawingPanel, BorderLayout.CENTER);
+
+            // Center the frame on the screen and make it visible
+            frame.setLocationRelativeTo(null);
+            frame.setVisible(true);
+        });
+    }
+}
+
+class PlaceholderIcon implements Icon {
+    private final Color color;
+    private static final int WIDTH = 60;
+    private static final int HEIGHT = 40;
+
+    public PlaceholderIcon(Color color) {
+        this.color = color;
+    }
+
+    @Override
+    public void paintIcon(Component c, Graphics g, int x, int y) {
+        Graphics2D g2 = (Graphics2D) g;
+        Rectangle2D.Double rect = new Rectangle2D.Double(x + 5, y + 5, WIDTH - 10, HEIGHT - 10);
+        g2.setColor(color);
+        g2.fill(rect);
+        g2.setColor(Color.BLACK);
+        g2.draw(rect);
+    }
+
+    @Override
+    public int getIconWidth() {
+        return WIDTH;
+    }
+
+    @Override
+    public int getIconHeight() {
+        return HEIGHT;
+    }
+}