adding Lab8_GraphicsLab

.gitignore

+# built application files
+*.apk
+*.ap_
+
+# files for the dex VM
+*.dex
+
+# Java class files
+*.class
+
+# generated files
+bin/
+gen/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Eclipse project files
+.classpath
+.settings
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Intellij project files
+*.iml
+*.ipr
+*.iws
+.idea
+.idea/workspace.xml
+.gradle
+build/
+captures/
+
+# Mac files
+.DS_Store
+
+# Windows thumbnail db
+Thumbs.db

app/build.gradle

+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion '27.0.3'
+
+    defaultConfig {
+        applicationId "course.labs.graphicslab"
+        minSdkVersion 21
+        targetSdkVersion 26
+
+        testApplicationId "course.labs.graphicslab.tests"
+        testInstrumentationRunner "android.test.InstrumentationTestRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
+        }
+    }
+}
+
+dependencies {
+    androidTestImplementation 'com.jayway.android.robotium:robotium-solo:5.6.3'
+}

app/src/androidTest/java/course/labs/graphicslab/tests/BubbleActivityFloatOffScreen.java

+package course.labs.graphicslab.tests;
+
+import course.labs.graphicslab.BubbleActivity;
+
+import com.robotium.solo.*;
+import android.test.ActivityInstrumentationTestCase2;
+
+public class BubbleActivityFloatOffScreen extends
+		ActivityInstrumentationTestCase2<BubbleActivity> {
+	private Solo solo;
+
+	public BubbleActivityFloatOffScreen() {
+		super(BubbleActivity.class);
+	}
+
+	public void setUp() throws Exception {
+		solo = new Solo(getInstrumentation(), getActivity());
+	}
+
+	@Override
+	public void tearDown() throws Exception {
+		solo.finishOpenedActivities();
+	}
+
+	public void testRun() {
+
+		int shortDelay = 250, delay = 2000;
+
+		// Wait for activity: 'course.labs.TouchLab.BubbleActivity'
+		solo.waitForActivity(course.labs.graphicslab.BubbleActivity.class,
+				delay);
+
+		// Click on action bar item
+		solo.clickOnMenuItem("Single Speed Mode");
+
+		// Click on action bar item
+		solo.clickOnMenuItem("Add a Bubble");
+
+		// Check whether bubble appears
+		boolean bubbleAppeared = solo.getCurrentViews(
+				course.labs.graphicslab.BubbleActivity.BubbleView.class).size() > 0;
+		for (int i = 0; i < 8 && !bubbleAppeared; i++) {
+			solo.sleep(shortDelay);
+			bubbleAppeared = solo.getCurrentViews(
+					course.labs.graphicslab.BubbleActivity.BubbleView.class)
+					.size() > 0;
+		}
+
+		// Assert that a bubble was displayed
+		assertTrue("Bubble hasn't appeared", bubbleAppeared);
+
+		solo.sleep(delay);
+
+		// Assert that the bubble has left the screen
+		assertEquals(
+				"Bubble hasn't left the screen",
+				0,
+				solo.getCurrentViews(
+						course.labs.graphicslab.BubbleActivity.BubbleView.class)
+						.size());
+
+	}
+}

app/src/androidTest/java/course/labs/graphicslab/tests/BubbleActivityMultiple.java

+package course.labs.graphicslab.tests;
+
+import course.labs.graphicslab.BubbleActivity;
+
+import com.robotium.solo.*;
+import android.test.ActivityInstrumentationTestCase2;
+
+public class BubbleActivityMultiple extends
+		ActivityInstrumentationTestCase2<BubbleActivity> {
+	private Solo solo;
+
+	public BubbleActivityMultiple() {
+		super(BubbleActivity.class);
+	}
+
+	public void setUp() throws Exception {
+		solo = new Solo(getInstrumentation(), getActivity());
+	}
+
+	@Override
+	public void tearDown() throws Exception {
+		solo.finishOpenedActivities();
+	}
+
+	public void testRun() {
+
+		int delay = 2000;
+
+		// Wait for activity: 'course.labs.TouchLab.BubbleActivity'
+		solo.waitForActivity(course.labs.graphicslab.BubbleActivity.class, delay);
+
+		// Set Still Mode
+		solo.clickOnMenuItem("Still Mode");
+
+		// Click on action bar item
+		solo.clickOnMenuItem("Add a Bubble");
+
+		solo.sleep(delay);
+		
+		// Assert that a bubble was displayed 
+		assertEquals("Bubble hasn't appeared", 1, solo.getCurrentViews(course.labs.graphicslab.BubbleActivity.BubbleView.class).size());
+
+		// Click on action bar item
+		solo.clickOnMenuItem("Add a Bubble");
+
+		solo.sleep(delay);
+
+		// Assert that a bubble was displayed 
+		assertEquals("Second bubble hasn't appeared", 2, solo.getCurrentViews(course.labs.graphicslab.BubbleActivity.BubbleView.class).size());
+
+		solo.sleep(delay);
+
+		// Give misbehaving bubbles a chance to move off screen
+		// Assert that there are two bubbles on the screen
+		assertEquals(
+				"There should be two bubbles on the screen",
+				2,
+				solo.getCurrentViews(
+						course.labs.graphicslab.BubbleActivity.BubbleView.class)
+						.size());
+
+	}
+}

app/src/androidTest/java/course/labs/graphicslab/tests/BubbleActivityPop.java

+package course.labs.graphicslab.tests;
+
+import course.labs.graphicslab.BubbleActivity;
+
+import com.robotium.solo.*;
+import android.test.ActivityInstrumentationTestCase2;
+
+public class BubbleActivityPop extends
+		ActivityInstrumentationTestCase2<BubbleActivity> {
+	private Solo solo;
+
+	public BubbleActivityPop() {
+		super(BubbleActivity.class);
+	}
+
+	public void setUp() throws Exception {
+		solo = new Solo(getInstrumentation(), getActivity());
+	}
+
+	@Override
+	public void tearDown() throws Exception {
+		solo.finishOpenedActivities();
+	}
+
+	public void testRun() {
+
+		int delay = 2000;
+
+		// Wait for activity: 'course.labs.TouchLab.BubbleActivity'
+		solo.waitForActivity(course.labs.graphicslab.BubbleActivity.class,
+				delay);
+
+		// Set Still Mode
+		solo.clickOnMenuItem("Still Mode");
+
+		// Click on action bar item
+		solo.clickOnMenuItem("Add a Bubble");
+
+		solo.sleep(delay);
+
+		// Assert that a bubble was displayed
+		assertEquals(
+				"Bubble hasn't appeared",
+				1,
+				solo.getCurrentViews(
+						course.labs.graphicslab.BubbleActivity.BubbleView.class)
+						.size());
+
+		// Click on action bar item
+		solo.clickOnMenuItem("Delete a Bubble");
+
+		solo.sleep(delay);
+
+		// Assert that there are no more bubbles
+		assertEquals(
+				"The bubble was not popped",
+				0,
+				solo.getCurrentViews(
+						course.labs.graphicslab.BubbleActivity.BubbleView.class)
+						.size());
+
+	}
+}

app/src/main/AndroidManifest.xml

+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="course.labs.graphicslab"
+    android:versionCode="1"
+    android:versionName="1.0" >
+
+
+    <application
+        android:allowBackup="false"
+        android:icon="@mipmap/icon"
+        android:label="@string/app_name" >
+  
+        <activity
+            android:name=".BubbleActivity"
+            android:label="@string/app_name"
+            android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file

app/src/main/java/course/labs/graphicslab/BubbleActivity.java

+package course.labs.graphicslab;
+
+import java.util.Random;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.media.AudioAttributes;
+import android.media.AudioManager;
+import android.media.SoundPool;
+import android.media.SoundPool.OnLoadCompleteListener;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.GestureDetector;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.MotionEvent;
+import android.view.View;
+import android.widget.RelativeLayout;
+
+public class BubbleActivity extends Activity {
+
+	// These variables are for testing purposes, do not modify
+	private final static int RANDOM = 0;
+	private final static int SINGLE = 1;
+	private final static int STILL = 2;
+	private static int speedMode = RANDOM;
+
+	private static final String TAG = "Lab-Graphics";
+
+	// The Main view
+	private RelativeLayout mFrame;
+
+	// Bubble image's bitmap
+	private Bitmap mBitmap;
+
+	// Display dimensions
+	private int mDisplayWidth, mDisplayHeight;
+
+	// Sound variables
+
+	// AudioManager
+	private AudioManager mAudioManager;
+	// SoundPool
+	private SoundPool mSoundPool;
+	// ID for the bubble popping sound
+	private int mSoundID;
+	// Audio volume
+	private float mStreamVolume;
+
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		setContentView(R.layout.main);
+
+		// Set up user interface
+		mFrame = (RelativeLayout) findViewById(R.id.frame);
+
+		// Load basic bubble Bitmap
+		mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.b64);
+
+	}
+
+	@Override
+	protected void onResume() {
+		super.onResume();
+
+		// Manage bubble popping sound
+		// Use AudioManager.STREAM_MUSIC as stream type
+
+		mAudioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
+
+		mStreamVolume = (float) mAudioManager
+				.getStreamVolume(AudioManager.STREAM_MUSIC)
+				/ mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
+
+		AudioAttributes musicAttribute = new AudioAttributes.Builder()
+				.setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
+				.build();
+
+		mSoundPool = new SoundPool.Builder()
+				.setMaxStreams(10)
+				.setAudioAttributes(musicAttribute)
+				.build();
+
+		mSoundID = mSoundPool.load(this, R.raw.bubble_pop, 1);
+
+	}
+
+	@Override
+	public void onWindowFocusChanged(boolean hasFocus) {
+		super.onWindowFocusChanged(hasFocus);
+		if (hasFocus) {
+
+			// Get the size of the display so this View knows where borders are
+			mDisplayWidth = mFrame.getWidth();
+			mDisplayHeight = mFrame.getHeight();
+
+		}
+	}
+
+	@Override
+	protected void onPause() {
+		mSoundPool.unload(mSoundID);
+		mSoundPool.release();
+		mSoundPool = null;
+		super.onPause();
+	}
+
+	// BubbleView is a View that displays a bubble.
+	// This class handles animating, drawing, and popping amongst other actions.
+	// A new BubbleView is created for each bubble on the display
+
+	public class BubbleView extends View {
+
+		private static final int BITMAP_SIZE = 64;
+		private static final int REFRESH_RATE = 40;
+		private final Paint mPainter = new Paint();
+		private ScheduledFuture<?> mMoverFuture;
+		private int mScaledBitmapWidth;
+		private Bitmap mScaledBitmap;
+
+		// location, speed and direction of the bubble
+		private float mXPos, mYPos, mDx, mDy, mRadius, mRadiusSquared;
+		private long mRotate, mDRotate;
+
+		BubbleView(Context context, float x, float y) {
+			super(context);
+			Log.i(TAG, "Creating Bubble at: x:" + x + " y:" + y);
+
+			// Create a new random number generator to
+			// randomize size, rotation, speed and direction
+			Random r = new Random();
+
+			// Creates the bubble bitmap for this BubbleView
+			createScaledBitmap(r);
+
+			// Radius of the Bitmap
+			mRadius = mScaledBitmapWidth / 2;
+			mRadiusSquared = mRadius * mRadius;
+			
+			// Adjust position to center the bubble under user's finger
+			mXPos = x - mRadius;
+			mYPos = y - mRadius;
+
+			// Set the BubbleView's speed and direction
+			setSpeedAndDirection(r);
+
+			// Set the BubbleView's rotation
+			setRotation(r);
+
+			mPainter.setAntiAlias(true);
+
+		}
+
+		private void setRotation(Random r) {
+
+			if (speedMode == RANDOM) {
+
+				// TODO - set rotation in range [1..3]
+				mDRotate = 0;
+
+			} else {
+                
+				mDRotate = 0;
+                
+			}
+		}
+
+		private void setSpeedAndDirection(Random r) {
+
+			// Used by test cases
+			switch (speedMode) {
+
+			case SINGLE:
+
+				mDx = 40;
+				mDy = 40;
+				break;
+
+			case STILL:
+
+				// No speed
+				mDx = 0;
+				mDy = 0;
+				break;
+
+			default:
+
+				// TODO - Set movement direction and speed
+				// Limit movement speed in the x and y
+				// direction to [-3..3] pixels per movement.
+
+
+
+			}
+		}
+
+		private void createScaledBitmap(Random r) {
+
+			if (speedMode != RANDOM) {
+				mScaledBitmapWidth = BITMAP_SIZE * 3;
+			} else {
+
+				// TODO - set scaled bitmap size in range [1..3] * BITMAP_SIZE
+
+			}
+
+			// TODO - create the scaled bitmap using size set above
+
+		}
+
+		// Start moving the BubbleView & updating the display
+		private void start() {
+
+			// Creates a WorkerThread
+			ScheduledExecutorService executor = Executors
+					.newScheduledThreadPool(1);
+
+			// Execute the run() in Worker Thread every REFRESH_RATE
+			// milliseconds
+			// Save reference to this job in mMoverFuture
+			mMoverFuture = executor.scheduleWithFixedDelay(new Runnable() {
+				@Override
+				public void run() {
+
+					// TODO - implement movement logic.
+					// Each time this method is run the BubbleView should
+					// move one step. If the BubbleView exits the display,
+					// stop the BubbleView's Worker Thread.
+					// Otherwise, request that the BubbleView be redrawn.
+
+
+				}
+			}, 0, REFRESH_RATE, TimeUnit.MILLISECONDS);
+		}
+
+		// Cancel the Bubble's movement
+		// Remove Bubble from mFrame
+		// Play pop sound if the BubbleView was popped
+
+		private void stop(final boolean wasPopped) {
+
+			if (null != mMoverFuture) {
+
+				if (!mMoverFuture.isDone()) {
+					mMoverFuture.cancel(true);
+				}
+
+				// This work will be performed on the UI Thread
+				mFrame.post(new Runnable() {
+					@Override
+					public void run() {
+
+						// TODO - Remove the BubbleView from mFrame
+
+
+						// If the bubble was popped by user,
+						// play the popping sound and Log that pop was performed
+						if (wasPopped) {
+							Log.i(TAG, "Pop!");
+							mSoundPool.play(mSoundID, mStreamVolume,
+									mStreamVolume, 1, 0, 1.0f);
+						}
+						Log.i(TAG, "Bubble removed from view!");
+					}
+				});
+			}
+		}
+
+		// Draw the Bubble at its current location
+		@Override
+		protected synchronized void onDraw(Canvas canvas) {
+
+			// TODO - save the canvas
+
+			// TODO - increase the rotation of the original image by mDRotate
+
+			// TODO Rotate the canvas by current rotation
+			// Hint - Rotate around the bubble's center, not its position
+
+
+
+			// TODO - draw the bitmap at it's new location
+
+			// TODO - restore the canvas
+
+		}
+
+		// Returns true if the BubbleView is still on the screen after the move
+		// operation
+		private synchronized boolean moveWhileOnScreen() {
+
+			// TODO - Move the BubbleView
+
+
+			return isOutOfView();
+
+		}
+
+		// Return true if the BubbleView is still on the screen after the move
+		// operation
+		private boolean isOutOfView() {
+
+			// TODO - Return true if the BubbleView is still on the screen after
+			// the move operation
+
+			return false;
+
+		}
+	}
+
+	@Override
+	public void onBackPressed() {
+		openOptionsMenu();
+	}
+
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu) {
+		super.onCreateOptionsMenu(menu);
+
+		getMenuInflater().inflate(R.menu.menu, menu);
+
+		return true;
+	}
+
+	@Override
+	public boolean onOptionsItemSelected(MenuItem item) {
+		// TODO- Handle addition and deletion of bubbles from options menu
+		// Added bubbles should be given random locations.
+		// The bubble to delete is the most recently added bubble
+		// that is still in the frame.
+		
+		// Hint: You can get all Views in mFrame using the 
+		// ViewGroup.getChildCount() method
+		switch (item.getItemId()) {
+		case R.id.menu_add_bubble:
+
+			return true;
+		case R.id.menu_delete_bubble:
+
+			return true;
+		case R.id.menu_still_mode:
+			speedMode = STILL;
+			return true;
+		case R.id.menu_single_speed:
+			speedMode = SINGLE;
+			return true;
+		case R.id.menu_random_mode:
+			speedMode = RANDOM;
+			return true;
+		case R.id.quit:
+			exitRequested();
+			return true;
+		default:
+			return super.onOptionsItemSelected(item);
+		}
+	}
+
+	private void exitRequested() {
+		super.onBackPressed();
+	}
+}
\ No newline at end of file

app/src/main/res/layout/main.xml

+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:background="#FF444444"
+    android:id="@+id/frame">
+ 
+</RelativeLayout>
\ No newline at end of file

app/src/main/res/menu/menu.xml

+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+    <item android:id="@+id/menu_add_bubble" android:title="@string/add_bubble_string"></item>
+    <item android:id="@+id/menu_delete_bubble" android:title="@string/delete_bubble_string"></item>
+    <item android:id="@+id/menu_still_mode" android:title="@string/still_mode_string"></item>
+    <item android:id="@+id/menu_single_speed" android:title="@string/single_speed_mode_string"></item>
+    <item android:id="@+id/menu_random_mode" android:title="@string/random_speed_mode_string"></item>
+    <item android:id="@+id/quit" android:title="@string/quit_string"></item>
+</menu>

app/src/main/res/values/strings.xml

+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">GraphicsLab</string>
+    <string name="still_mode_string">Still Mode</string>
+    <string name="single_speed_mode_string">Single Speed Mode</string>
+    <string name="random_speed_mode_string">Random Speed Mode</string>
+    <string name="quit_string">Quit</string>
+    <string name="add_bubble_string">Add a Bubble</string>
+    <string name="delete_bubble_string">Delete a Bubble</string>
+</resources>

build.gradle

+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.1.4'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+    }
+}