adding Graphics Lab

labs/Lab9_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

labs/Lab9_GraphicsLab/app/build.gradle

+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion '29.0.3'
+
+    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'
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
+}

labs/Lab9_GraphicsLab/app/src/androidTest/java/course/labs/graphicslab/tests/BubbleActivityFloatOffScreen.kt

+package course.labs.graphicslab.tests
+
+import course.labs.graphicslab.BubbleActivity
+
+import com.robotium.solo.*
+import android.test.ActivityInstrumentationTestCase2
+import junit.framework.Assert
+import kotlin.jvm.Throws
+
+class BubbleActivityFloatOffScreen : ActivityInstrumentationTestCase2<BubbleActivity>(BubbleActivity::class.java) {
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    public override fun setUp() {
+        solo = Solo(instrumentation, activity)
+    }
+
+    @Throws(Exception::class)
+    public override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    fun testRun() {
+
+        val shortDelay = 250
+        val delay = 2000
+
+        // Wait for activity: 'course.labs.TouchLab.BubbleActivity'
+        solo!!.waitForActivity(course.labs.graphicslab.BubbleActivity::class.java,
+                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
+        var bubbleAppeared = solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(
+                course.labs.graphicslab.BubbleActivity.BubbleView::class.java).size > 0
+        var i = 0
+        while (i < 8 && !bubbleAppeared) {
+            solo!!.sleep(shortDelay)
+            bubbleAppeared = solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(
+                    course.labs.graphicslab.BubbleActivity.BubbleView::class.java)
+                    .size > 0
+            i++
+        }
+
+        // Assert that a bubble was displayed
+        Assert.assertTrue("Bubble hasn't appeared", bubbleAppeared)
+
+        solo!!.sleep(delay)
+
+        // Assert that the bubble has left the screen
+        Assert.assertEquals(
+                "Bubble hasn't left the screen",
+                0,
+                solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(
+                        course.labs.graphicslab.BubbleActivity.BubbleView::class.java)
+                        .size)
+
+    }
+}

labs/Lab9_GraphicsLab/app/src/androidTest/java/course/labs/graphicslab/tests/BubbleActivityMultiple.kt

+package course.labs.graphicslab.tests
+
+import course.labs.graphicslab.BubbleActivity
+
+import com.robotium.solo.*
+import android.test.ActivityInstrumentationTestCase2
+import junit.framework.Assert
+import kotlin.jvm.Throws
+
+class BubbleActivityMultiple : ActivityInstrumentationTestCase2<BubbleActivity>(BubbleActivity::class.java) {
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    public override fun setUp() {
+        solo = Solo(instrumentation, activity)
+    }
+
+    @Throws(Exception::class)
+    public override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    fun testRun() {
+
+        val delay = 2000
+
+        // Wait for activity: 'course.labs.TouchLab.BubbleActivity'
+        solo!!.waitForActivity(course.labs.graphicslab.BubbleActivity::class.java, 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
+        Assert.assertEquals("Bubble hasn't appeared", 1, solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(course.labs.graphicslab.BubbleActivity.BubbleView::class.java).size)
+
+        // Click on action bar item
+        solo!!.clickOnMenuItem("Add a Bubble")
+
+        solo!!.sleep(delay)
+
+        // Assert that a bubble was displayed
+        Assert.assertEquals("Second bubble hasn't appeared", 2, solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(course.labs.graphicslab.BubbleActivity.BubbleView::class.java).size)
+
+        solo!!.sleep(delay)
+
+        // Give misbehaving bubbles a chance to move off screen
+        // Assert that there are two bubbles on the screen
+        Assert.assertEquals(
+                "There should be two bubbles on the screen",
+                2,
+                solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(
+                        course.labs.graphicslab.BubbleActivity.BubbleView::class.java)
+                        .size)
+
+    }
+}

labs/Lab9_GraphicsLab/app/src/androidTest/java/course/labs/graphicslab/tests/BubbleActivityPop.kt

+package course.labs.graphicslab.tests
+
+import course.labs.graphicslab.BubbleActivity
+
+import com.robotium.solo.*
+import android.test.ActivityInstrumentationTestCase2
+import junit.framework.Assert
+import kotlin.jvm.Throws
+
+class BubbleActivityPop : ActivityInstrumentationTestCase2<BubbleActivity>(BubbleActivity::class.java) {
+    private var solo: Solo? = null
+
+    @Throws(Exception::class)
+    public override fun setUp() {
+        solo = Solo(instrumentation, activity)
+    }
+
+    @Throws(Exception::class)
+    public override fun tearDown() {
+        solo!!.finishOpenedActivities()
+    }
+
+    fun testRun() {
+
+        val delay = 2000
+
+        // Wait for activity: 'course.labs.TouchLab.BubbleActivity'
+        solo!!.waitForActivity(course.labs.graphicslab.BubbleActivity::class.java,
+                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
+        Assert.assertEquals(
+                "Bubble hasn't appeared",
+                1,
+                solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(
+                        course.labs.graphicslab.BubbleActivity.BubbleView::class.java)
+                        .size)
+
+        // Click on action bar item
+        solo!!.clickOnMenuItem("Delete a Bubble")
+
+        solo!!.sleep(delay)
+
+        // Assert that there are no more bubbles
+        Assert.assertEquals(
+                "The bubble was not popped",
+                0,
+                solo!!.getCurrentViews<course.labs.graphicslab.BubbleActivity.BubbleView>(
+                        course.labs.graphicslab.BubbleActivity.BubbleView::class.java)
+                        .size)
+
+    }
+}

labs/Lab9_GraphicsLab/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

labs/Lab9_GraphicsLab/app/src/main/java/course/labs/graphicslab/BubbleActivity.kt

+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
+
+class BubbleActivity : Activity() {
+
+    // The Main view
+    private var mFrame: RelativeLayout? = null
+
+    // Bubble image's bitmap
+    private var mBitmap: Bitmap? = null
+
+    // Display dimensions
+    private var mDisplayWidth: Int = 0
+    private var mDisplayHeight: Int = 0
+
+    // Sound variables
+
+    // AudioManager
+    private var mAudioManager: AudioManager? = null
+    // SoundPool
+    private var mSoundPool: SoundPool? = null
+    // ID for the bubble popping sound
+    private var mSoundID: Int = 0
+    // Audio volume
+    private var mStreamVolume: Float = 0.toFloat()
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContentView(R.layout.main)
+
+        // Set up user interface
+        mFrame = findViewById<View>(R.id.frame) as RelativeLayout
+
+        // Load basic bubble Bitmap
+        mBitmap = BitmapFactory.decodeResource(resources, R.drawable.b64)
+
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        // Manage bubble popping sound
+        // Use AudioManager.STREAM_MUSIC as stream type
+
+        mAudioManager = getSystemService(Context.AUDIO_SERVICE) as AudioManager
+
+        mStreamVolume = mAudioManager!!
+                .getStreamVolume(AudioManager.STREAM_MUSIC).toFloat() / mAudioManager!!.getStreamMaxVolume(AudioManager.STREAM_MUSIC)
+
+        val musicAttribute = AudioAttributes.Builder()
+                .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
+                .build()
+
+        mSoundPool = SoundPool.Builder()
+                .setMaxStreams(10)
+                .setAudioAttributes(musicAttribute)
+                .build()
+
+        mSoundID = mSoundPool!!.load(this, R.raw.bubble_pop, 1)
+
+    }
+
+    override fun onWindowFocusChanged(hasFocus: Boolean) {
+        super.onWindowFocusChanged(hasFocus)
+        if (hasFocus) {
+
+            // Get the size of the display so this View knows where borders are
+            mDisplayWidth = mFrame!!.width
+            mDisplayHeight = mFrame!!.height
+
+        }
+    }
+
+    override fun 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
+
+    inner class BubbleView internal constructor(context: Context, x: Float, y: Float) : View(context) {
+        private val mPainter = Paint()
+        private var mMoverFuture: ScheduledFuture<*>? = null
+        private var mScaledBitmapWidth: Int = 0
+        private val mScaledBitmap: Bitmap? = null
+
+        // location, speed and direction of the bubble
+        private val mXPos: Float
+        private val mYPos: Float
+        private var mDx: Float = 0.toFloat()
+        private var mDy: Float = 0.toFloat()
+        private val mRadius: Float
+        private val mRadiusSquared: Float
+        private val mRotate: Long = 0
+        private var mDRotate: Long = 0
+
+        // Return true if the BubbleView is still on the screen after the move
+        // operation
+        private// TODO - Return true if the BubbleView is still on the screen after
+        // the move operation
+        val isOutOfView: Boolean
+            get() = false
+
+        init {
+            Log.i(TAG, "Creating Bubble at: x:$x y:$y")
+
+            // Create a new random number generator to
+            // randomize size, rotation, speed and direction
+            val r = Random()
+
+            // Creates the bubble bitmap for this BubbleView
+            createScaledBitmap(r)
+
+            // Radius of the Bitmap
+            mRadius = (mScaledBitmapWidth / 2).toFloat()
+            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.isAntiAlias = true
+
+        }
+
+        private fun setRotation(r: Random) {
+
+            if (speedMode == RANDOM) {
+
+                // TODO - set rotation in range [1..3]
+                mDRotate = 0
+
+            } else {
+
+                mDRotate = 0
+
+            }
+        }
+
+        private fun setSpeedAndDirection(r: Random) {
+
+            // Used by test cases
+            when (speedMode) {
+
+                SINGLE -> {
+
+                    mDx = 40f
+                    mDy = 40f
+                }
+
+                STILL -> {
+
+                    // No speed
+                    mDx = 0f
+                    mDy = 0f
+                }
+            }// TODO - Set movement direction and speed
+            // Limit movement speed in the x and y
+            // direction to [-3..3] pixels per movement.
+        }
+
+        private fun createScaledBitmap(r: Random) {
+
+            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 fun start() {
+
+            // Creates a WorkerThread
+            val executor = Executors
+                    .newScheduledThreadPool(1)
+
+            // Execute the run() in Worker Thread every REFRESH_RATE
+            // milliseconds
+            // Save reference to this job in mMoverFuture
+            mMoverFuture = executor.scheduleWithFixedDelay({
+                // 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.toLong(), TimeUnit.MILLISECONDS)
+        }
+
+        // Cancel the Bubble's movement
+        // Remove Bubble from mFrame
+        // Play pop sound if the BubbleView was popped
+
+        private fun stop(wasPopped: Boolean) {
+
+            if (null != mMoverFuture) {
+
+                if (!mMoverFuture!!.isDone) {
+                    mMoverFuture!!.cancel(true)
+                }
+
+                // This work will be performed on the UI Thread
+                mFrame!!.post {
+                    // 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
+        @Synchronized
+        override fun 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
+        @Synchronized
+        private fun moveWhileOnScreen(): Boolean {
+
+            // TODO - Move the BubbleView
+
+
+            return isOutOfView
+
+        }
+
+    }
+
+    override fun onBackPressed() {
+        openOptionsMenu()
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        super.onCreateOptionsMenu(menu)
+
+        menuInflater.inflate(R.menu.menu, menu)
+
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // 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
+        when (item.itemId) {
+            R.id.menu_add_bubble ->
+
+                return true
+            R.id.menu_delete_bubble ->
+
+                return true
+            R.id.menu_still_mode -> {
+                speedMode = STILL
+                return true
+            }
+            R.id.menu_single_speed -> {
+                speedMode = SINGLE
+                return true
+            }
+            R.id.menu_random_mode -> {
+                speedMode = RANDOM
+                return true
+            }
+            R.id.quit -> {
+                exitRequested()
+                return true
+            }
+            else -> return super.onOptionsItemSelected(item)
+        }
+    }
+
+    private fun exitRequested() {
+        super.onBackPressed()
+    }
+
+    companion object {
+
+        // These variables are for testing purposes, do not modify
+        private val RANDOM = 0
+        private val SINGLE = 1
+        private val STILL = 2
+        private var speedMode = RANDOM
+        private val BITMAP_SIZE = 64
+        private val REFRESH_RATE = 40
+        private val TAG = "Lab-Graphics"
+    }
+}
\ No newline at end of file

labs/Lab9_GraphicsLab/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

labs/Lab9_GraphicsLab/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>

labs/Lab9_GraphicsLab/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>

labs/Lab9_GraphicsLab/build.gradle

+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    ext.kotlin_version = '1.4.10'
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.0.1'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+        google()
+    }
+}