cmds/monkey/src/com/android/commands/monkey/MonkeySourceRandom.java - platform/development - Git at Google

 /*
  * Copyright (C) 2008 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.commands.monkey;

 import android.content.ComponentName;
 import android.os.SystemClock;
 import android.view.Display;
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.WindowManagerImpl;

 import java.util.ArrayList;
 import java.util.Random;

 /**
  * monkey event queue
  */
 public class MonkeySourceRandom implements MonkeyEventSource {
     /** Key events that move around the UI. */
     private static final int[] NAV_KEYS = {
         KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN,
         KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT,
     };
     /**
      * Key events that perform major navigation options (so shouldn't be sent
      * as much).
      */
     private static final int[] MAJOR_NAV_KEYS = {
         KeyEvent.KEYCODE_MENU, /*KeyEvent.KEYCODE_SOFT_RIGHT,*/
         KeyEvent.KEYCODE_DPAD_CENTER,
     };
     /** Key events that perform system operations. */
     private static final int[] SYS_KEYS = {
         KeyEvent.KEYCODE_HOME, KeyEvent.KEYCODE_BACK,
         KeyEvent.KEYCODE_CALL, KeyEvent.KEYCODE_ENDCALL,
         KeyEvent.KEYCODE_VOLUME_UP, KeyEvent.KEYCODE_VOLUME_DOWN, KeyEvent.KEYCODE_VOLUME_MUTE,
         KeyEvent.KEYCODE_MUTE,
     };
     /** If a physical key exists? */
     private static final boolean[] PHYSICAL_KEY_EXISTS = new boolean[KeyEvent.getMaxKeyCode() + 1];
     static {
         for (int i = 0; i < PHYSICAL_KEY_EXISTS.length; ++i) {
             PHYSICAL_KEY_EXISTS[i] = true;
         }
         // Only examine SYS_KEYS
         for (int i = 0; i < SYS_KEYS.length; ++i) {
             PHYSICAL_KEY_EXISTS[SYS_KEYS[i]] = KeyCharacterMap.deviceHasKey(SYS_KEYS[i]);
         }
     }

     public static final int FACTOR_TOUCH        = 0;
     public static final int FACTOR_MOTION       = 1;
     public static final int FACTOR_TRACKBALL    = 2;
     public static final int FACTOR_NAV          = 3;
     public static final int FACTOR_MAJORNAV     = 4;
     public static final int FACTOR_SYSOPS       = 5;
     public static final int FACTOR_APPSWITCH    = 6;
     public static final int FACTOR_FLIP         = 7;
     public static final int FACTOR_ANYTHING     = 8;
     public static final int FACTORZ_COUNT       = 9;    // should be last+1


     /** percentages for each type of event.  These will be remapped to working
      * values after we read any optional values.
      **/
     private float[] mFactors = new float[FACTORZ_COUNT];
     private ArrayList<ComponentName> mMainApps;
     private int mEventCount = 0;  //total number of events generated so far
     private MonkeyEventQueue mQ;
     private Random mRandom;
     private int mVerbose = 0;
     private long mThrottle = 0;

     private boolean mKeyboardOpen = false;

     public static String getKeyName(int keycode) {
         return KeyEvent.keyCodeToString(keycode);
     }

     /**
      * Looks up the keyCode from a given KEYCODE_NAME.  NOTE: This may
      * be an expensive operation.
      *
      * @param keyName the name of the KEYCODE_VALUE to lookup.
      * @returns the intenger keyCode value, or -1 if not found
      */
     public static int getKeyCode(String keyName) {
         return KeyEvent.keyCodeFromString(keyName);
     }

     public MonkeySourceRandom(Random random, ArrayList<ComponentName> MainApps,
             long throttle, boolean randomizeThrottle) {
         // default values for random distributions
         // note, these are straight percentages, to match user input (cmd line args)
         // but they will be converted to 0..1 values before the main loop runs.
         mFactors[FACTOR_TOUCH] = 15.0f;
         mFactors[FACTOR_MOTION] = 10.0f;
         mFactors[FACTOR_TRACKBALL] = 15.0f;
         mFactors[FACTOR_NAV] = 25.0f;
         mFactors[FACTOR_MAJORNAV] = 15.0f;
         mFactors[FACTOR_SYSOPS] = 2.0f;
         mFactors[FACTOR_APPSWITCH] = 2.0f;
         mFactors[FACTOR_FLIP] = 1.0f;
         mFactors[FACTOR_ANYTHING] = 15.0f;

         mRandom = random;
         mMainApps = MainApps;
         mQ = new MonkeyEventQueue(random, throttle, randomizeThrottle);
     }

     /**
      * Adjust the percentages (after applying user values) and then normalize to a 0..1 scale.
      */
     private boolean adjustEventFactors() {
         // go through all values and compute totals for user & default values
         float userSum = 0.0f;
         float defaultSum = 0.0f;
         int defaultCount = 0;
         for (int i = 0; i < FACTORZ_COUNT; ++i) {
             if (mFactors[i] <= 0.0f) {   // user values are zero or negative
                 userSum -= mFactors[i];
             } else {
                 defaultSum += mFactors[i];
                 ++defaultCount;
             }
         }

         // if the user request was > 100%, reject it
         if (userSum > 100.0f) {
             System.err.println("** Event weights > 100%");
             return false;
         }

         // if the user specified all of the weights, then they need to be 100%
         if (defaultCount == 0 && (userSum < 99.9f || userSum > 100.1f)) {
             System.err.println("** Event weights != 100%");
             return false;
         }

         // compute the adjustment necessary
         float defaultsTarget = (100.0f - userSum);
         float defaultsAdjustment = defaultsTarget / defaultSum;

         // fix all values, by adjusting defaults, or flipping user values back to >0
         for (int i = 0; i < FACTORZ_COUNT; ++i) {
             if (mFactors[i] <= 0.0f) {   // user values are zero or negative
                 mFactors[i] = -mFactors[i];
             } else {
                 mFactors[i] *= defaultsAdjustment;
             }
         }

         // if verbose, show factors
         if (mVerbose > 0) {
             System.out.println("// Event percentages:");
             for (int i = 0; i < FACTORZ_COUNT; ++i) {
                 System.out.println("//   " + i + ": " + mFactors[i] + "%");
             }
         }

         if (!validateKeys()) {
             return false;
         }

         // finally, normalize and convert to running sum
         float sum = 0.0f;
         for (int i = 0; i < FACTORZ_COUNT; ++i) {
             sum += mFactors[i] / 100.0f;
             mFactors[i] = sum;
         }
         return true;
     }

     private static boolean validateKeyCategory(String catName, int[] keys, float factor) {
         if (factor < 0.1f) {
             return true;
         }
         for (int i = 0; i < keys.length; ++i) {
             if (PHYSICAL_KEY_EXISTS[keys[i]]) {
                 return true;
             }
         }
         System.err.println("** " + catName + " has no physical keys but with factor " + factor + "%.");
         return false;
     }

     /**
      * See if any key exists for non-zero factors.
      */
     private boolean validateKeys() {
         return validateKeyCategory("NAV_KEYS", NAV_KEYS, mFactors[FACTOR_NAV])
             && validateKeyCategory("MAJOR_NAV_KEYS", MAJOR_NAV_KEYS, mFactors[FACTOR_MAJORNAV])
             && validateKeyCategory("SYS_KEYS", SYS_KEYS, mFactors[FACTOR_SYSOPS]);
     }

     /**
      * set the factors
      *
      * @param factors percentages for each type of event
      */
     public void setFactors(float factors[]) {
         int c = FACTORZ_COUNT;
         if (factors.length < c) {
             c = factors.length;
         }
         for (int i = 0; i < c; i++)
             mFactors[i] = factors[i];
     }

     public void setFactors(int index, float v) {
         mFactors[index] = v;
     }

     /**
      * Generates a random motion event. This method counts a down, move, and up as multiple events.
      *
      * TODO:  Test & fix the selectors when non-zero percentages
      * TODO:  Longpress.
      * TODO:  Fling.
      * TODO:  Meta state
      * TODO:  More useful than the random walk here would be to pick a single random direction
      * and distance, and divvy it up into a random number of segments.  (This would serve to
      * generate fling gestures, which are important).
      *
      * @param random Random number source for positioning
      * @param motionEvent If false, touch/release.  If true, touch/move/release.
      *
      */
     private void generateMotionEvent(Random random, boolean motionEvent){

         Display display = WindowManagerImpl.getDefault().getDefaultDisplay();

         float x = Math.abs(random.nextInt() % display.getWidth());
         float y = Math.abs(random.nextInt() % display.getHeight());
         long downAt = SystemClock.uptimeMillis();
         long eventTime = SystemClock.uptimeMillis();
         if (downAt == -1) {
             downAt = eventTime;
         }

         MonkeyMotionEvent e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_POINTER,
                 downAt, MotionEvent.ACTION_DOWN, x, y, 0);
         e.setIntermediateNote(false);
         mQ.addLast(e);

         // sometimes we'll move during the touch
         if (motionEvent) {
             int count = random.nextInt(10);
             for (int i = 0; i < count; i++) {
                 // generate some slop in the up event
                 x = (x + (random.nextInt() % 10)) % display.getWidth();
                 y = (y + (random.nextInt() % 10)) % display.getHeight();

                 e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_POINTER,
                         downAt, MotionEvent.ACTION_MOVE, x, y, 0);
                 e.setIntermediateNote(true);
                 mQ.addLast(e);
             }
         }

         // TODO generate some slop in the up event
         e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_POINTER,
                 downAt, MotionEvent.ACTION_UP, x, y, 0);
         e.setIntermediateNote(false);
         mQ.addLast(e);
     }

     /**
      * Generates a random trackball event. This consists of a sequence of small moves, followed by
      * an optional single click.
      *
      * TODO:  Longpress.
      * TODO:  Meta state
      * TODO:  Parameterize the % clicked
      * TODO:  More useful than the random walk here would be to pick a single random direction
      * and distance, and divvy it up into a random number of segments.  (This would serve to
      * generate fling gestures, which are important).
      *
      * @param random Random number source for positioning
      *
      */
     private void generateTrackballEvent(Random random) {
         Display display = WindowManagerImpl.getDefault().getDefaultDisplay();

         boolean drop = false;
         int count = random.nextInt(10);
         MonkeyMotionEvent e;
         for (int i = 0; i < 10; ++i) {
             // generate a small random step
             int dX = random.nextInt(10) - 5;
             int dY = random.nextInt(10) - 5;


             e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_TRACKBALL, -1,
                     MotionEvent.ACTION_MOVE, dX, dY, 0);
             e.setIntermediateNote(i > 0);
             mQ.addLast(e);
         }

         // 10% of trackball moves end with a click
         if (0 == random.nextInt(10)) {
             long downAt = SystemClock.uptimeMillis();


             e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_TRACKBALL, downAt,
                     MotionEvent.ACTION_DOWN, 0, 0, 0);
             e.setIntermediateNote(true);
             mQ.addLast(e);


             e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_TRACKBALL, downAt,
                     MotionEvent.ACTION_UP, 0, 0, 0);
             e.setIntermediateNote(false);
             mQ.addLast(e);
         }
     }

     /**
      * generate a random event based on mFactor
      */
     private void generateEvents() {
         float cls = mRandom.nextFloat();
         int lastKey = 0;

         boolean touchEvent = cls < mFactors[FACTOR_TOUCH];
         boolean motionEvent = !touchEvent && (cls < mFactors[FACTOR_MOTION]);
         if (touchEvent || motionEvent) {
             generateMotionEvent(mRandom, motionEvent);
             return;
         }

         if (cls < mFactors[FACTOR_TRACKBALL]) {
             generateTrackballEvent(mRandom);
             return;
         }

         // The remaining event categories are injected as key events
         do {
             if (cls < mFactors[FACTOR_NAV]) {
                 lastKey = NAV_KEYS[mRandom.nextInt(NAV_KEYS.length)];
             } else if (cls < mFactors[FACTOR_MAJORNAV]) {
                 lastKey = MAJOR_NAV_KEYS[mRandom.nextInt(MAJOR_NAV_KEYS.length)];
             } else if (cls < mFactors[FACTOR_SYSOPS]) {
                 lastKey = SYS_KEYS[mRandom.nextInt(SYS_KEYS.length)];
             } else if (cls < mFactors[FACTOR_APPSWITCH]) {
                 MonkeyActivityEvent e = new MonkeyActivityEvent(mMainApps.get(
                         mRandom.nextInt(mMainApps.size())));
                 mQ.addLast(e);
                 return;
             } else if (cls < mFactors[FACTOR_FLIP]) {
                 MonkeyFlipEvent e = new MonkeyFlipEvent(mKeyboardOpen);
                 mKeyboardOpen = !mKeyboardOpen;
                 mQ.addLast(e);
                 return;
             } else {
                 lastKey = 1 + mRandom.nextInt(KeyEvent.getMaxKeyCode() - 1);
             }
         } while (!PHYSICAL_KEY_EXISTS[lastKey]);

         MonkeyKeyEvent e = new MonkeyKeyEvent(KeyEvent.ACTION_DOWN, lastKey);
         mQ.addLast(e);

         e = new MonkeyKeyEvent(KeyEvent.ACTION_UP, lastKey);
         mQ.addLast(e);
     }

     public boolean validate() {
         //check factors
         return adjustEventFactors();
     }

     public void setVerbose(int verbose) {
         mVerbose = verbose;
     }

     /**
      * generate an activity event
      */
     public void generateActivity() {
         MonkeyActivityEvent e = new MonkeyActivityEvent(mMainApps.get(
                 mRandom.nextInt(mMainApps.size())));
         mQ.addLast(e);
     }

     /**
      * if the queue is empty, we generate events first
      * @return the first event in the queue
      */
     public MonkeyEvent getNextEvent() {
         if (mQ.isEmpty()) {
             generateEvents();
         }
         mEventCount++;
         MonkeyEvent e = mQ.getFirst();
         mQ.removeFirst();
         return e;
     }
 }
	/*
	* Copyright (C) 2008 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.commands.monkey;

	import android.content.ComponentName;
	import android.os.SystemClock;
	import android.view.Display;
	import android.view.KeyCharacterMap;
	import android.view.KeyEvent;
	import android.view.MotionEvent;
	import android.view.WindowManagerImpl;

	import java.util.ArrayList;
	import java.util.Random;

	/**
	* monkey event queue
	*/
	public class MonkeySourceRandom implements MonkeyEventSource {
	/** Key events that move around the UI. */
	private static final int[] NAV_KEYS = {
	KeyEvent.KEYCODE_DPAD_UP, KeyEvent.KEYCODE_DPAD_DOWN,
	KeyEvent.KEYCODE_DPAD_LEFT, KeyEvent.KEYCODE_DPAD_RIGHT,
	};
	/**
	* Key events that perform major navigation options (so shouldn't be sent
	* as much).
	*/
	private static final int[] MAJOR_NAV_KEYS = {
	KeyEvent.KEYCODE_MENU, /KeyEvent.KEYCODE_SOFT_RIGHT,/
	KeyEvent.KEYCODE_DPAD_CENTER,
	};
	/** Key events that perform system operations. */
	private static final int[] SYS_KEYS = {
	KeyEvent.KEYCODE_HOME, KeyEvent.KEYCODE_BACK,
	KeyEvent.KEYCODE_CALL, KeyEvent.KEYCODE_ENDCALL,
	KeyEvent.KEYCODE_VOLUME_UP, KeyEvent.KEYCODE_VOLUME_DOWN, KeyEvent.KEYCODE_VOLUME_MUTE,
	KeyEvent.KEYCODE_MUTE,
	};
	/** If a physical key exists? */
	private static final boolean[] PHYSICAL_KEY_EXISTS = new boolean[KeyEvent.getMaxKeyCode() + 1];
	static {
	for (int i = 0; i < PHYSICAL_KEY_EXISTS.length; ++i) {
	PHYSICAL_KEY_EXISTS[i] = true;
	}
	// Only examine SYS_KEYS
	for (int i = 0; i < SYS_KEYS.length; ++i) {
	PHYSICAL_KEY_EXISTS[SYS_KEYS[i]] = KeyCharacterMap.deviceHasKey(SYS_KEYS[i]);
	}
	}

	public static final int FACTOR_TOUCH = 0;
	public static final int FACTOR_MOTION = 1;
	public static final int FACTOR_TRACKBALL = 2;
	public static final int FACTOR_NAV = 3;
	public static final int FACTOR_MAJORNAV = 4;
	public static final int FACTOR_SYSOPS = 5;
	public static final int FACTOR_APPSWITCH = 6;
	public static final int FACTOR_FLIP = 7;
	public static final int FACTOR_ANYTHING = 8;
	public static final int FACTORZ_COUNT = 9; // should be last+1


	/** percentages for each type of event. These will be remapped to working
	* values after we read any optional values.
	**/
	private float[] mFactors = new float[FACTORZ_COUNT];
	private ArrayList<ComponentName> mMainApps;
	private int mEventCount = 0; //total number of events generated so far
	private MonkeyEventQueue mQ;
	private Random mRandom;
	private int mVerbose = 0;
	private long mThrottle = 0;

	private boolean mKeyboardOpen = false;

	public static String getKeyName(int keycode) {
	return KeyEvent.keyCodeToString(keycode);
	}

	/**
	* Looks up the keyCode from a given KEYCODE_NAME. NOTE: This may
	* be an expensive operation.
	*
	* @param keyName the name of the KEYCODE_VALUE to lookup.
	* @returns the intenger keyCode value, or -1 if not found
	*/
	public static int getKeyCode(String keyName) {
	return KeyEvent.keyCodeFromString(keyName);
	}

	public MonkeySourceRandom(Random random, ArrayList<ComponentName> MainApps,
	long throttle, boolean randomizeThrottle) {
	// default values for random distributions
	// note, these are straight percentages, to match user input (cmd line args)
	// but they will be converted to 0..1 values before the main loop runs.
	mFactors[FACTOR_TOUCH] = 15.0f;
	mFactors[FACTOR_MOTION] = 10.0f;
	mFactors[FACTOR_TRACKBALL] = 15.0f;
	mFactors[FACTOR_NAV] = 25.0f;
	mFactors[FACTOR_MAJORNAV] = 15.0f;
	mFactors[FACTOR_SYSOPS] = 2.0f;
	mFactors[FACTOR_APPSWITCH] = 2.0f;
	mFactors[FACTOR_FLIP] = 1.0f;
	mFactors[FACTOR_ANYTHING] = 15.0f;

	mRandom = random;
	mMainApps = MainApps;
	mQ = new MonkeyEventQueue(random, throttle, randomizeThrottle);
	}

	/**
	* Adjust the percentages (after applying user values) and then normalize to a 0..1 scale.
	*/
	private boolean adjustEventFactors() {
	// go through all values and compute totals for user & default values
	float userSum = 0.0f;
	float defaultSum = 0.0f;
	int defaultCount = 0;
	for (int i = 0; i < FACTORZ_COUNT; ++i) {
	if (mFactors[i] <= 0.0f) { // user values are zero or negative
	userSum -= mFactors[i];
	} else {
	defaultSum += mFactors[i];
	++defaultCount;
	}
	}

	// if the user request was > 100%, reject it
	if (userSum > 100.0f) {
	System.err.println("** Event weights > 100%");
	return false;
	}

	// if the user specified all of the weights, then they need to be 100%
	if (defaultCount == 0 && (userSum < 99.9f \|\| userSum > 100.1f)) {
	System.err.println("** Event weights != 100%");
	return false;
	}

	// compute the adjustment necessary
	float defaultsTarget = (100.0f - userSum);
	float defaultsAdjustment = defaultsTarget / defaultSum;

	// fix all values, by adjusting defaults, or flipping user values back to >0
	for (int i = 0; i < FACTORZ_COUNT; ++i) {
	if (mFactors[i] <= 0.0f) { // user values are zero or negative
	mFactors[i] = -mFactors[i];
	} else {
	mFactors[i] *= defaultsAdjustment;
	}
	}

	// if verbose, show factors
	if (mVerbose > 0) {
	System.out.println("// Event percentages:");
	for (int i = 0; i < FACTORZ_COUNT; ++i) {
	System.out.println("// " + i + ": " + mFactors[i] + "%");
	}
	}

	if (!validateKeys()) {
	return false;
	}

	// finally, normalize and convert to running sum
	float sum = 0.0f;
	for (int i = 0; i < FACTORZ_COUNT; ++i) {
	sum += mFactors[i] / 100.0f;
	mFactors[i] = sum;
	}
	return true;
	}

	private static boolean validateKeyCategory(String catName, int[] keys, float factor) {
	if (factor < 0.1f) {
	return true;
	}
	for (int i = 0; i < keys.length; ++i) {
	if (PHYSICAL_KEY_EXISTS[keys[i]]) {
	return true;
	}
	}
	System.err.println("** " + catName + " has no physical keys but with factor " + factor + "%.");
	return false;
	}

	/**
	* See if any key exists for non-zero factors.
	*/
	private boolean validateKeys() {
	return validateKeyCategory("NAV_KEYS", NAV_KEYS, mFactors[FACTOR_NAV])
	&& validateKeyCategory("MAJOR_NAV_KEYS", MAJOR_NAV_KEYS, mFactors[FACTOR_MAJORNAV])
	&& validateKeyCategory("SYS_KEYS", SYS_KEYS, mFactors[FACTOR_SYSOPS]);
	}

	/**
	* set the factors
	*
	* @param factors percentages for each type of event
	*/
	public void setFactors(float factors[]) {
	int c = FACTORZ_COUNT;
	if (factors.length < c) {
	c = factors.length;
	}
	for (int i = 0; i < c; i++)
	mFactors[i] = factors[i];
	}

	public void setFactors(int index, float v) {
	mFactors[index] = v;
	}

	/**
	* Generates a random motion event. This method counts a down, move, and up as multiple events.
	*
	* TODO: Test & fix the selectors when non-zero percentages
	* TODO: Longpress.
	* TODO: Fling.
	* TODO: Meta state
	* TODO: More useful than the random walk here would be to pick a single random direction
	* and distance, and divvy it up into a random number of segments. (This would serve to
	* generate fling gestures, which are important).
	*
	* @param random Random number source for positioning
	* @param motionEvent If false, touch/release. If true, touch/move/release.
	*
	*/
	private void generateMotionEvent(Random random, boolean motionEvent){

	Display display = WindowManagerImpl.getDefault().getDefaultDisplay();

	float x = Math.abs(random.nextInt() % display.getWidth());
	float y = Math.abs(random.nextInt() % display.getHeight());
	long downAt = SystemClock.uptimeMillis();
	long eventTime = SystemClock.uptimeMillis();
	if (downAt == -1) {
	downAt = eventTime;
	}

	MonkeyMotionEvent e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_POINTER,
	downAt, MotionEvent.ACTION_DOWN, x, y, 0);
	e.setIntermediateNote(false);
	mQ.addLast(e);

	// sometimes we'll move during the touch
	if (motionEvent) {
	int count = random.nextInt(10);
	for (int i = 0; i < count; i++) {
	// generate some slop in the up event
	x = (x + (random.nextInt() % 10)) % display.getWidth();
	y = (y + (random.nextInt() % 10)) % display.getHeight();

	e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_POINTER,
	downAt, MotionEvent.ACTION_MOVE, x, y, 0);
	e.setIntermediateNote(true);
	mQ.addLast(e);
	}
	}

	// TODO generate some slop in the up event
	e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_POINTER,
	downAt, MotionEvent.ACTION_UP, x, y, 0);
	e.setIntermediateNote(false);
	mQ.addLast(e);
	}

	/**
	* Generates a random trackball event. This consists of a sequence of small moves, followed by
	* an optional single click.
	*
	* TODO: Longpress.
	* TODO: Meta state
	* TODO: Parameterize the % clicked
	* TODO: More useful than the random walk here would be to pick a single random direction
	* and distance, and divvy it up into a random number of segments. (This would serve to
	* generate fling gestures, which are important).
	*
	* @param random Random number source for positioning
	*
	*/
	private void generateTrackballEvent(Random random) {
	Display display = WindowManagerImpl.getDefault().getDefaultDisplay();

	boolean drop = false;
	int count = random.nextInt(10);
	MonkeyMotionEvent e;
	for (int i = 0; i < 10; ++i) {
	// generate a small random step
	int dX = random.nextInt(10) - 5;
	int dY = random.nextInt(10) - 5;


	e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_TRACKBALL, -1,
	MotionEvent.ACTION_MOVE, dX, dY, 0);
	e.setIntermediateNote(i > 0);
	mQ.addLast(e);
	}

	// 10% of trackball moves end with a click
	if (0 == random.nextInt(10)) {
	long downAt = SystemClock.uptimeMillis();


	e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_TRACKBALL, downAt,
	MotionEvent.ACTION_DOWN, 0, 0, 0);
	e.setIntermediateNote(true);
	mQ.addLast(e);


	e = new MonkeyMotionEvent(MonkeyEvent.EVENT_TYPE_TRACKBALL, downAt,
	MotionEvent.ACTION_UP, 0, 0, 0);
	e.setIntermediateNote(false);
	mQ.addLast(e);
	}
	}

	/**
	* generate a random event based on mFactor
	*/
	private void generateEvents() {
	float cls = mRandom.nextFloat();
	int lastKey = 0;

	boolean touchEvent = cls < mFactors[FACTOR_TOUCH];
	boolean motionEvent = !touchEvent && (cls < mFactors[FACTOR_MOTION]);
	if (touchEvent \|\| motionEvent) {
	generateMotionEvent(mRandom, motionEvent);
	return;
	}

	if (cls < mFactors[FACTOR_TRACKBALL]) {
	generateTrackballEvent(mRandom);
	return;
	}

	// The remaining event categories are injected as key events
	do {
	if (cls < mFactors[FACTOR_NAV]) {
	lastKey = NAV_KEYS[mRandom.nextInt(NAV_KEYS.length)];
	} else if (cls < mFactors[FACTOR_MAJORNAV]) {
	lastKey = MAJOR_NAV_KEYS[mRandom.nextInt(MAJOR_NAV_KEYS.length)];
	} else if (cls < mFactors[FACTOR_SYSOPS]) {
	lastKey = SYS_KEYS[mRandom.nextInt(SYS_KEYS.length)];
	} else if (cls < mFactors[FACTOR_APPSWITCH]) {
	MonkeyActivityEvent e = new MonkeyActivityEvent(mMainApps.get(
	mRandom.nextInt(mMainApps.size())));
	mQ.addLast(e);
	return;
	} else if (cls < mFactors[FACTOR_FLIP]) {
	MonkeyFlipEvent e = new MonkeyFlipEvent(mKeyboardOpen);
	mKeyboardOpen = !mKeyboardOpen;
	mQ.addLast(e);
	return;
	} else {
	lastKey = 1 + mRandom.nextInt(KeyEvent.getMaxKeyCode() - 1);
	}
	} while (!PHYSICAL_KEY_EXISTS[lastKey]);

	MonkeyKeyEvent e = new MonkeyKeyEvent(KeyEvent.ACTION_DOWN, lastKey);
	mQ.addLast(e);

	e = new MonkeyKeyEvent(KeyEvent.ACTION_UP, lastKey);
	mQ.addLast(e);
	}

	public boolean validate() {
	//check factors
	return adjustEventFactors();
	}

	public void setVerbose(int verbose) {
	mVerbose = verbose;
	}

	/**
	* generate an activity event
	*/
	public void generateActivity() {
	MonkeyActivityEvent e = new MonkeyActivityEvent(mMainApps.get(
	mRandom.nextInt(mMainApps.size())));
	mQ.addLast(e);
	}

	/**
	* if the queue is empty, we generate events first
	* @return the first event in the queue
	*/
	public MonkeyEvent getNextEvent() {
	if (mQ.isEmpty()) {
	generateEvents();
	}
	mEventCount++;
	MonkeyEvent e = mQ.getFirst();
	mQ.removeFirst();
	return e;
	}
	}