Move the Gestures API to the framework in android.gesture.

19 files changed, 28 insertions, 2698 deletions

diff --git a/tests/sketch/src/com/android/gesture/Gesture.java b/tests/sketch/src/com/android/gesture/Gesture.java
deleted file mode 100755
index d5dcc65..0000000
--- a/tests/sketch/src/com/android/gesture/Gesture.java
+++ /dev/null
@@ -1,320 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Paint;
-import android.graphics.Path;
-import android.graphics.RectF;
-import android.os.Parcel;
-import android.os.Parcelable;
-import android.util.Log;
-
-import java.io.IOException;
-import java.io.DataOutputStream;
-import java.io.DataInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.ByteArrayInputStream;
-import java.util.ArrayList;
-
-import static com.android.gesture.GestureConstants.LOG_TAG;
-
-/**
- * A gesture can have a single or multiple strokes
- */
-
-public class Gesture implements Parcelable {
-    private static final long GESTURE_ID_BASE = System.currentTimeMillis();
-
-    private static final int BITMAP_RENDERING_WIDTH = 2;
-
-    private static final boolean BITMAP_RENDERING_ANTIALIAS = true;
-    private static final boolean BITMAP_RENDERING_DITHER = true;
-
-    private static int sGestureCount = 0;
-
-    private RectF mBoundingBox;
-
-    // the same as its instance ID
-    private long mGestureID;
-
-    private final ArrayList<GestureStroke> mStrokes = new ArrayList<GestureStroke>();
-
-    public Gesture() {
-        mGestureID = GESTURE_ID_BASE + sGestureCount++;
-    }
-
-    /**
-     * @return all the strokes of the gesture
-     */
-    public ArrayList<GestureStroke> getStrokes() {
-        return mStrokes;
-    }
-
-    /**
-     * @return the number of strokes included by this gesture
-     */
-    public int getStrokesCount() {
-        return mStrokes.size();
-    }
-
-    /**
-     * Add a stroke to the gesture
-     * 
-     * @param stroke
-     */
-    public void addStroke(GestureStroke stroke) {
-        mStrokes.add(stroke);
-
-        if (mBoundingBox == null) {
-            mBoundingBox = new RectF(stroke.boundingBox);
-        } else {
-            mBoundingBox.union(stroke.boundingBox);
-        }
-    }
-
-    /**
-     * Get the total length of the gesture. When there are multiple strokes in
-     * the gesture, this returns the sum of the lengths of all the strokes
-     * 
-     * @return the length of the gesture
-     */
-    public float getLength() {
-        int len = 0;
-        final ArrayList<GestureStroke> strokes = mStrokes;
-        final int count = strokes.size();
-
-        for (int i = 0; i < count; i++) {
-            len += strokes.get(i).length;
-        }
-
-        return len;
-    }
-
-    /**
-     * @return the bounding box of the gesture
-     */
-    public RectF getBoundingBox() {
-        return mBoundingBox;
-    }
-
-    /**
-     * Set the id of the gesture
-     * 
-     * @param id
-     */
-    void setID(long id) {
-        mGestureID = id;
-    }
-
-    /**
-     * @return the id of the gesture
-     */
-    public long getID() {
-        return mGestureID;
-    }
-
-    /**
-     * draw the gesture
-     * 
-     * @param canvas
-     */
-    void draw(Canvas canvas, Paint paint) {
-        final ArrayList<GestureStroke> strokes = mStrokes;
-        final int count = strokes.size();
-
-        for (int i = 0; i < count; i++) {
-            strokes.get(i).draw(canvas, paint);
-        }
-    }
-
-    /**
-     * Create a bitmap of the gesture with a transparent background
-     * 
-     * @param width width of the target bitmap
-     * @param height height of the target bitmap
-     * @param edge the edge
-     * @param numSample
-     * @param color
-     * @return the bitmap
-     */
-    public Bitmap toBitmap(int width, int height, int edge, int numSample, int color) {
-        final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-        final Canvas canvas = new Canvas(bitmap);
-
-        canvas.translate(edge, edge);
-
-        final Paint paint = new Paint();
-        paint.setAntiAlias(BITMAP_RENDERING_ANTIALIAS);
-        paint.setDither(BITMAP_RENDERING_DITHER);
-        paint.setColor(color);
-        paint.setStyle(Paint.Style.STROKE);
-        paint.setStrokeJoin(Paint.Join.ROUND);
-        paint.setStrokeCap(Paint.Cap.ROUND);
-        paint.setStrokeWidth(BITMAP_RENDERING_WIDTH);
-
-        final ArrayList<GestureStroke> strokes = mStrokes;
-        final int count = strokes.size();
-
-        for (int i = 0; i < count; i++) {
-            Path path = strokes.get(i).toPath(width - 2 * edge, height - 2 * edge, numSample);
-            canvas.drawPath(path, paint);
-        }
-
-        return bitmap;
-    }
-
-    /**
-     * Create a bitmap of the gesture with a transparent background
-     * 
-     * @param width
-     * @param height
-     * @param edge
-     * @param color
-     * @return the bitmap
-     */
-    public Bitmap toBitmap(int width, int height, int edge, int color) {
-        final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
-        final Canvas canvas = new Canvas(bitmap);
-
-        canvas.translate(edge, edge);
-
-        final Paint paint = new Paint();
-        paint.setAntiAlias(BITMAP_RENDERING_ANTIALIAS);
-        paint.setDither(BITMAP_RENDERING_DITHER);
-        paint.setColor(color);
-        paint.setStyle(Paint.Style.STROKE);
-        paint.setStrokeJoin(Paint.Join.ROUND);
-        paint.setStrokeCap(Paint.Cap.ROUND);
-        paint.setStrokeWidth(BITMAP_RENDERING_WIDTH);
-
-        final ArrayList<GestureStroke> strokes = mStrokes;
-        final int count = strokes.size();
-
-        for (int i = 0; i < count; i++) {
-            strokes.get(i).draw(canvas, paint);
-        }
-
-        return bitmap;
-    }
-
-    void serialize(DataOutputStream out) throws IOException {
-        final ArrayList<GestureStroke> strokes = mStrokes;
-        final int count = strokes.size();
-
-        // Write gesture ID
-        out.writeLong(mGestureID);
-        // Write number of strokes
-        out.writeInt(count);
-
-        for (int i = 0; i < count; i++) {
-            strokes.get(i).serialize(out);
-        }
-    }
-
-    static Gesture deserialize(DataInputStream in) throws IOException {
-        final Gesture gesture = new Gesture();
-
-        // Gesture ID
-        gesture.mGestureID = in.readLong();
-        // Number of strokes
-        final int count = in.readInt();
-
-        for (int i = 0; i < count; i++) {
-            gesture.addStroke(GestureStroke.deserialize(in));
-        }
-
-        return gesture;
-    }
-
-    /**
-     * Convert the gesture to string
-     */
-    @Override
-    public String toString() {
-        final StringBuilder str = new StringBuilder();
-        str.append(mGestureID);
-
-        final ArrayList<GestureStroke> strokes = mStrokes;
-        final int count = strokes.size();
-
-        for (int i = 0; i < count; i++) {
-            final GestureStroke stroke = strokes.get(i);
-            str.append(GestureConstants.STRING_GESTURE_DELIIMITER);
-            str.append(stroke.toString());
-        }
-
-        return str.toString();
-    }
-
-    public static final Parcelable.Creator<Gesture> CREATOR = new Parcelable.Creator<Gesture>() {
-        public Gesture createFromParcel(Parcel in) {
-            Gesture gesture = null;
-            final long gestureID = in.readLong();
-
-            final DataInputStream inStream = new DataInputStream(
-                    new ByteArrayInputStream(in.createByteArray()));
-
-            try {
-                gesture = deserialize(inStream);
-            } catch (IOException e) {
-                Log.e(LOG_TAG, "Error reading Gesture from parcel:", e);
-            } finally {
-                GestureUtilities.closeStream(inStream);
-            }
-
-            if (gesture != null) {
-                gesture.mGestureID = gestureID;
-            }
-
-            return gesture;
-        }
-
-        public Gesture[] newArray(int size) {
-            return new Gesture[size];
-        }
-    };
-
-    public void writeToParcel(Parcel out, int flags) {
-        out.writeLong(mGestureID);
-
-        boolean result = false;
-        final ByteArrayOutputStream byteStream =
-                new ByteArrayOutputStream(GestureConstants.IO_BUFFER_SIZE);
-        final DataOutputStream outStream = new DataOutputStream(byteStream);
-
-        try {
-            serialize(outStream);
-            result = true;
-        } catch (IOException e) {
-            Log.e(LOG_TAG, "Error writing Gesture to parcel:", e);
-        } finally {
-            GestureUtilities.closeStream(outStream);
-            GestureUtilities.closeStream(byteStream);
-        }
-
-        if (result) {
-            out.writeByteArray(byteStream.toByteArray());
-        }
-    }
-
-    public int describeContents() {
-        return 0;
-    }
-}
-
diff --git a/tests/sketch/src/com/android/gesture/GestureActionListener.java b/tests/sketch/src/com/android/gesture/GestureActionListener.java
deleted file mode 100644
index c9c5232..0000000
--- a/tests/sketch/src/com/android/gesture/GestureActionListener.java
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-public interface GestureActionListener {
-    public void onGesturePerformed(GestureOverlay overlay, Gesture gesture);
-}
diff --git a/tests/sketch/src/com/android/gesture/GestureConstants.java b/tests/sketch/src/com/android/gesture/GestureConstants.java
deleted file mode 100644
index c0f2f3d..0000000
--- a/tests/sketch/src/com/android/gesture/GestureConstants.java
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2009 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.gesture;
-
-interface GestureConstants {
-    static final String STRING_GESTURE_DELIIMITER = "#";
-    static final String STRING_STROKE_DELIIMITER = ",";
-
-    static final int STROKE_STRING_BUFFER_SIZE = 1024;
-    static final int STROKE_POINT_BUFFER_SIZE = 100; // number of points
-
-    static final int IO_BUFFER_SIZE = 32 * 1024; // 32K
-
-    static final String LOG_TAG = "Gestures";
-}
diff --git a/tests/sketch/src/com/android/gesture/GestureLibrary.java b/tests/sketch/src/com/android/gesture/GestureLibrary.java
deleted file mode 100644
index 7b5480c..0000000
--- a/tests/sketch/src/com/android/gesture/GestureLibrary.java
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.util.Log;
-import android.os.SystemClock;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedOutputStream;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.DataOutputStream;
-import java.io.DataInputStream;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Set;
-import java.util.Map;
-
-import static com.android.gesture.GestureConstants.LOG_TAG;
-
-/**
- * GestureLibrary maintains gesture examples and makes predictions on a new
- * gesture
- */
-//
-//    File format for GestureLibrary:
-//
-//                Nb. bytes   Java type   Description
-//                -----------------------------------
-//    Header
-//                2 bytes     short       File format version number
-//                4 bytes     int         Number of entries
-//    Entry
-//                X bytes     UTF String  Entry name
-//                4 bytes     int         Number of gestures
-//    Gesture
-//                8 bytes     long        Gesture ID
-//                4 bytes     int         Number of strokes
-//    Stroke
-//                4 bytes     int         Number of points
-//    Point
-//                4 bytes     float       X coordinate of the point
-//                4 bytes     float       Y coordinate of the point
-//                8 bytes     long        Time stamp
-//
-public class GestureLibrary {
-    public static final int SEQUENCE_INVARIANT = 1;
-    // when SEQUENCE_SENSITIVE is used, only single stroke gestures are currently allowed
-    public static final int SEQUENCE_SENSITIVE = 2;
-
-    // ORIENTATION_SENSITIVE and ORIENTATION_INVARIANT are only for SEQUENCE_SENSITIVE gestures
-    public static final int ORIENTATION_INVARIANT = 1;
-    public static final int ORIENTATION_SENSITIVE = 2;
-
-    private static final short FILE_FORMAT_VERSION = 1;
-
-    private static final boolean PROFILE_LOADING_SAVING = false;
-
-    private int mSequenceType = SEQUENCE_SENSITIVE;
-    private int mOrientationStyle = ORIENTATION_SENSITIVE;
-
-    private final String mGestureFileName;
-
-    private final HashMap<String, ArrayList<Gesture>> mNamedGestures =
-            new HashMap<String, ArrayList<Gesture>>();
-
-    private Learner mClassifier;
-
-    private boolean mChanged = false;
-
-    /**
-     * @param path where gesture data is stored
-     */
-    public GestureLibrary(String path) {
-        mGestureFileName = path;
-        mClassifier = new InstanceLearner();
-    }
-
-    /**
-     * Specify how the gesture library will handle orientation. 
-     * Use ORIENTATION_INVARIANT or ORIENTATION_SENSITIVE
-     * 
-     * @param style
-     */
-    public void setOrientationStyle(int style) {
-        mOrientationStyle = style;
-    }
-
-    public int getOrientationStyle() {
-        return mOrientationStyle;
-    }
-
-    /**
-     * @param type SEQUENCE_INVARIANT or SEQUENCE_SENSITIVE
-     */
-    public void setSequenceType(int type) {
-        mSequenceType = type;
-    }
-
-    /**
-     * @return SEQUENCE_INVARIANT or SEQUENCE_SENSITIVE
-     */
-    public int getSequenceType() {
-        return mSequenceType;
-    }
-
-    /**
-     * Get all the gesture entry names in the library
-     * 
-     * @return a set of strings
-     */
-    public Set<String> getGestureEntries() {
-        return mNamedGestures.keySet();
-    }
-
-    /**
-     * Recognize a gesture
-     * 
-     * @param gesture the query
-     * @return a list of predictions of possible entries for a given gesture
-     */
-    public ArrayList<Prediction> recognize(Gesture gesture) {
-        Instance instance = Instance.createInstance(mSequenceType, gesture, null);
-        return mClassifier.classify(mSequenceType, instance.vector);
-    }
-
-    /**
-     * Add a gesture for the entry
-     * 
-     * @param entryName entry name
-     * @param gesture
-     */
-    public void addGesture(String entryName, Gesture gesture) {
-        if (entryName == null || entryName.length() == 0) {
-            return;
-        }
-        ArrayList<Gesture> gestures = mNamedGestures.get(entryName);
-        if (gestures == null) {
-            gestures = new ArrayList<Gesture>();
-            mNamedGestures.put(entryName, gestures);
-        }
-        gestures.add(gesture);
-        mClassifier.addInstance(Instance.createInstance(mSequenceType, gesture, entryName));
-        mChanged = true;
-    }
-
-    /**
-     * Remove a gesture from the library. If there are no more gestures for the
-     * given entry, the gesture entry will be removed.
-     * 
-     * @param entryName entry name
-     * @param gesture
-     */
-    public void removeGesture(String entryName, Gesture gesture) {
-        ArrayList<Gesture> gestures = mNamedGestures.get(entryName);
-        if (gestures == null) {
-            return;
-        }
-
-        gestures.remove(gesture);
-
-        // if there are no more samples, remove the entry automatically
-        if (gestures.isEmpty()) {
-            mNamedGestures.remove(entryName);
-        }
-
-        mClassifier.removeInstance(gesture.getID());
-
-        mChanged = true;
-    }
-
-    /**
-     * Remove a entry of gestures
-     * 
-     * @param entryName the entry name
-     */
-    public void removeEntireEntry(String entryName) {
-        mNamedGestures.remove(entryName);
-        mClassifier.removeInstances(entryName);
-        mChanged = true;
-    }
-
-    /**
-     * Get all the gestures of an entry
-     * 
-     * @param entryName
-     * @return the list of gestures that is under this name
-     */
-    public ArrayList<Gesture> getGestures(String entryName) {
-        ArrayList<Gesture> gestures = mNamedGestures.get(entryName);
-        if (gestures != null) {
-            return new ArrayList<Gesture>(gestures);
-        } else {
-            return null;
-        }
-    }
-
-    /**
-     * Save the gesture library
-     */
-    public boolean save() {
-        if (!mChanged) {
-            return true;
-        }
-
-        boolean result = false;
-        DataOutputStream out = null;
-
-        try {
-            File file = new File(mGestureFileName);
-            if (!file.getParentFile().exists()) {
-                if (!file.getParentFile().mkdirs()) {
-                    return false;
-                }
-            }
-
-            long start;
-            if (PROFILE_LOADING_SAVING) {
-                start = SystemClock.elapsedRealtime();
-            }
-
-            final HashMap<String, ArrayList<Gesture>> maps = mNamedGestures;
-
-            out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file),
-                    GestureConstants.IO_BUFFER_SIZE));
-            // Write version number
-            out.writeShort(FILE_FORMAT_VERSION);
-            // Write number of entries
-            out.writeInt(maps.size());
-
-            for (Map.Entry<String, ArrayList<Gesture>> entry : maps.entrySet()) {
-                final String key = entry.getKey();
-                final ArrayList<Gesture> examples = entry.getValue();
-                final int count = examples.size();
-
-                // Write entry name
-                out.writeUTF(key);
-                // Write number of examples for this entry
-                out.writeInt(count);
-
-                for (int i = 0; i < count; i++) {
-                    examples.get(i).serialize(out);
-                }
-            }
-
-            out.flush();
-
-            if (PROFILE_LOADING_SAVING) {
-                long end = SystemClock.elapsedRealtime();
-                Log.d(LOG_TAG, "Saving gestures library = " + (end - start) + " ms");
-            }
-
-            mChanged = false;
-            result = true;
-        } catch (IOException ex) {
-            Log.d(LOG_TAG, "Failed to save gestures:", ex);
-        } finally {
-            GestureUtilities.closeStream(out);
-        }
-
-        return result;
-    }
-
-    /**
-     * Load the gesture library
-     */
-    public boolean load() {
-        boolean result = false;
-
-        final File file = new File(mGestureFileName);
-        if (file.exists()) {
-            DataInputStream in = null;
-            try {
-                in = new DataInputStream(new BufferedInputStream(
-                        new FileInputStream(mGestureFileName), GestureConstants.IO_BUFFER_SIZE));
-
-                long start;
-                if (PROFILE_LOADING_SAVING) {
-                    start = SystemClock.elapsedRealtime();
-                }
-
-                // Read file format version number
-                final short versionNumber = in.readShort();
-                switch (versionNumber) {
-                    case 1:
-                        readFormatV1(in);
-                        break;
-                }
-
-                if (PROFILE_LOADING_SAVING) {
-                    long end = SystemClock.elapsedRealtime();
-                    Log.d(LOG_TAG, "Loading gestures library = " + (end - start) + " ms");
-                }
-
-                result = true;
-            } catch (IOException ex) {
-                Log.d(LOG_TAG, "Failed to load gestures:", ex);
-            } finally {
-                GestureUtilities.closeStream(in);
-            }
-        }
-
-        return result;
-    }
-
-    private void readFormatV1(DataInputStream in) throws IOException {
-        final Learner classifier = mClassifier;
-        final HashMap<String, ArrayList<Gesture>> namedGestures = mNamedGestures;
-        namedGestures.clear();
-
-        // Number of entries in the library
-        final int entriesCount = in.readInt();
-
-        for (int i = 0; i < entriesCount; i++) {
-            // Entry name
-            final String name = in.readUTF();
-            // Number of gestures
-            final int gestureCount = in.readInt();
-
-            final ArrayList<Gesture> gestures = new ArrayList<Gesture>(gestureCount);
-            for (int j = 0; j < gestureCount; j++) {
-                final Gesture gesture = Gesture.deserialize(in);
-                gestures.add(gesture);
-                classifier.addInstance(Instance.createInstance(mSequenceType, gesture, name));
-            }
-
-            namedGestures.put(name, gestures);
-        }
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/GestureListener.java b/tests/sketch/src/com/android/gesture/GestureListener.java
deleted file mode 100755
index 9b50714..0000000
--- a/tests/sketch/src/com/android/gesture/GestureListener.java
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.view.MotionEvent;
-
-/**
- * An interface for processing gesture events
- */
-public interface GestureListener {
-    public void onStartGesture(GestureOverlay overlay, MotionEvent event);
-
-    public void onGesture(GestureOverlay overlay, MotionEvent event);
-
-    public void onFinishGesture(GestureOverlay overlay, MotionEvent event);
-}
diff --git a/tests/sketch/src/com/android/gesture/GestureOverlay.java b/tests/sketch/src/com/android/gesture/GestureOverlay.java
deleted file mode 100755
index 454cecb..0000000
--- a/tests/sketch/src/com/android/gesture/GestureOverlay.java
+++ /dev/null
@@ -1,390 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.BlurMaskFilter;
-import android.graphics.Canvas;
-import android.graphics.Paint;
-import android.graphics.Path;
-import android.graphics.Rect;
-import android.os.Handler;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-import android.view.View;
-
-import java.util.ArrayList;
-
-/**
- * A (transparent) overlay for gesture input that can be placed on top of other
- * widgets. The view can also be opaque.
- */
-
-public class GestureOverlay extends View {
-    static final float TOUCH_TOLERANCE = 3;
-
-    // TODO: Move all these values into XML attributes
-    private static final int TRANSPARENT_BACKGROUND = 0x00000000;
-
-    // TODO: SHOULD BE A TOTAL DURATION
-    private static final float FADING_ALPHA_CHANGE = 0.15f;
-    private static final long FADING_OFFSET = 300;
-    private static final long FADING_REFRESHING_RATE = 16;
-
-    private static final int GESTURE_STROKE_WIDTH = 12;
-    private static final boolean GESTURE_RENDERING_ANTIALIAS = true;
-
-    private static final boolean DITHER_FLAG = true;
-
-    public static final int DEFAULT_GESTURE_COLOR = 0xFFFFFF00;
-
-    private static final int REFRESH_RANGE = 10;
-
-    private static final BlurMaskFilter BLUR_MASK_FILTER =
-            new BlurMaskFilter(1, BlurMaskFilter.Blur.NORMAL);
-    
-
-    // double buffering
-    private Paint mGesturePaint;
-
-    private final Paint mBitmapPaint = new Paint(Paint.DITHER_FLAG);
-    private Bitmap mBitmap; // with transparent background
-    private Canvas mBitmapCanvas;
-
-    // for rendering immediate ink feedback
-    private Rect mInvalidRect = new Rect();
-
-    private Path mPath;
-
-    private float mX;
-    private float mY;
-    
-    private float mCurveEndX;
-    private float mCurveEndY;
-
-    // current gesture
-    private Gesture mCurrentGesture = null;
-
-    // TODO: Make this a list of WeakReferences
-    private final ArrayList<GestureListener> mGestureListeners = new ArrayList<GestureListener>();
-    private ArrayList<GesturePoint> mPointBuffer = null;
-
-    // fading out effect
-    private boolean mIsFadingOut = false;
-    private float mFadingAlpha = 1;
-
-    private Handler mHandler = new Handler();
-
-    private final Runnable mFadingOut = new Runnable() {
-        public void run() {
-            if (mIsFadingOut) {
-                mFadingAlpha -= FADING_ALPHA_CHANGE;
-                if (mFadingAlpha <= 0) {
-                    mIsFadingOut = false;
-                    mPath = null;
-                    mCurrentGesture = null;
-                    mBitmap.eraseColor(TRANSPARENT_BACKGROUND);
-                } else {
-                    mHandler.postDelayed(this, FADING_REFRESHING_RATE);
-                }
-                invalidate();
-            }
-        }
-    };
-
-    public GestureOverlay(Context context) {
-        super(context);
-        init();
-    }
-
-    public GestureOverlay(Context context, AttributeSet attrs) {
-        super(context, attrs);
-        init();
-    }
-
-    public ArrayList<GesturePoint> getCurrentStroke() {
-        return mPointBuffer;
-    }
-
-    public Gesture getCurrentGesture() {
-        return mCurrentGesture;
-    }
-
-    /**
-     * Set Gesture color
-     * 
-     * @param color
-     */
-    public void setGestureColor(int color) {
-        mGesturePaint.setColor(color);
-        if (mCurrentGesture != null) {
-            mBitmap.eraseColor(TRANSPARENT_BACKGROUND);
-            mCurrentGesture.draw(mBitmapCanvas, mGesturePaint);
-        }
-    }
-
-    /**
-     * Set the gesture to be shown in the view
-     * 
-     * @param gesture
-     */
-    public void setCurrentGesture(Gesture gesture) {
-        if (mCurrentGesture != null) {
-            clear(false);
-        }
-
-        mCurrentGesture = gesture;
-
-        if (gesture != null) {
-            if (mBitmapCanvas != null) {
-                gesture.draw(mBitmapCanvas, mGesturePaint);
-                invalidate();
-            }
-        }
-    }
-
-    private void init() {
-        mGesturePaint = new Paint();
-
-        final Paint gesturePaint = mGesturePaint;
-        gesturePaint.setAntiAlias(GESTURE_RENDERING_ANTIALIAS);
-        gesturePaint.setColor(DEFAULT_GESTURE_COLOR);
-        gesturePaint.setStyle(Paint.Style.STROKE);
-        gesturePaint.setStrokeJoin(Paint.Join.ROUND);
-        gesturePaint.setStrokeCap(Paint.Cap.ROUND);
-        gesturePaint.setStrokeWidth(GESTURE_STROKE_WIDTH);
-        gesturePaint.setDither(DITHER_FLAG);
-
-        mPath = null;
-    }
-
-    @Override
-    protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) {
-        super.onSizeChanged(width, height, oldWidth, oldHeight);
-
-        if (width <= 0 || height <= 0) {
-            return;
-        }
-
-        int targetWidth = width > oldWidth ? width : oldWidth;
-        int targetHeight = height > oldHeight ? height : oldHeight;
-
-        if (mBitmap != null) mBitmap.recycle();
-
-        mBitmap = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);
-        if (mBitmapCanvas != null) {
-            mBitmapCanvas.setBitmap(mBitmap);
-        } else {
-            mBitmapCanvas = new Canvas(mBitmap);
-        }
-        mBitmapCanvas.drawColor(TRANSPARENT_BACKGROUND);
-
-        if (mCurrentGesture != null) {
-            mCurrentGesture.draw(mBitmapCanvas, mGesturePaint);
-        }
-    }
-
-    public void addGestureListener(GestureListener listener) {
-        mGestureListeners.add(listener);
-    }
-
-    public void removeGestureListener(GestureListener listener) {
-        mGestureListeners.remove(listener);
-    }
-
-    @Override
-    protected void onDraw(Canvas canvas) {
-        super.onDraw(canvas);
-
-        // draw double buffer
-        if (mIsFadingOut) {
-            mBitmapPaint.setAlpha((int) (255 * mFadingAlpha));
-            canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
-        } else {
-            mBitmapPaint.setAlpha(255);
-            canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint);
-        }
-
-        // draw the current stroke
-        if (mPath != null) {
-            canvas.drawPath(mPath, mGesturePaint);
-        }
-    }
-
-    /**
-     * Clear up the overlay
-     * 
-     * @param fadeOut whether the gesture on the overlay should fade out
-     *            gradually or disappear immediately
-     */
-    public void clear(boolean fadeOut) {
-        if (fadeOut) {
-            mFadingAlpha = 1;
-            mIsFadingOut = true;
-            mHandler.removeCallbacks(mFadingOut);
-            mHandler.postDelayed(mFadingOut, FADING_OFFSET);
-        } else {
-            mPath = null;
-            mCurrentGesture = null;
-            if (mBitmap != null) {
-                mBitmap.eraseColor(TRANSPARENT_BACKGROUND);
-                invalidate();
-            }
-        }
-    }
-
-    public void cancelFadingOut() {
-        mIsFadingOut = false;
-        mHandler.removeCallbacks(mFadingOut);
-    }
-
-    @Override
-    public boolean onTouchEvent(MotionEvent event) {
-        if (!isEnabled()) {
-            return true;
-        }
-
-        switch (event.getAction()) {
-            case MotionEvent.ACTION_DOWN:
-                Rect rect = touchStart(event);
-                invalidate(rect);
-                break;
-            case MotionEvent.ACTION_MOVE:
-                rect = touchMove(event);
-                if (rect != null) {
-                    invalidate(rect);
-                }
-                break;
-            case MotionEvent.ACTION_UP:
-                touchUp(event);
-                invalidate();
-                break;
-        }
-
-        return true;
-    }
-
-    private Rect touchStart(MotionEvent event) {
-        // pass the event to handlers
-        final ArrayList<GestureListener> listeners = mGestureListeners;
-        final int count = listeners.size();
-        for (int i = 0; i < count; i++) {
-            GestureListener listener = listeners.get(i);
-            listener.onStartGesture(this, event);
-        }
-
-        // if there is fading out going on, stop it.
-        if (mIsFadingOut) {
-            mIsFadingOut = false;
-            mHandler.removeCallbacks(mFadingOut);
-            mBitmap.eraseColor(TRANSPARENT_BACKGROUND);
-            mCurrentGesture = null;
-        }
-
-        float x = event.getX();
-        float y = event.getY();
-
-        mX = x;
-        mY = y;
-
-        if (mCurrentGesture == null) {
-            mCurrentGesture = new Gesture();
-        }
-
-        mPointBuffer = new ArrayList<GesturePoint>();
-        mPointBuffer.add(new GesturePoint(x, y, event.getEventTime()));
-
-        mPath = new Path();
-        mPath.moveTo(x, y);
-
-        mInvalidRect.set((int) x - REFRESH_RANGE, (int) y - REFRESH_RANGE,
-                (int) x + REFRESH_RANGE, (int) y + REFRESH_RANGE);
-        
-        mCurveEndX = x;
-        mCurveEndY = y;
-        
-        return mInvalidRect;
-    }
-
-    private Rect touchMove(MotionEvent event) {
-        Rect areaToRefresh = null;
-        
-        float x = event.getX();
-        float y = event.getY();
-
-        float dx = Math.abs(x - mX);
-        float dy = Math.abs(y - mY);
-        
-        if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
-            
-            // start with the curve end
-            mInvalidRect.set((int) mCurveEndX - REFRESH_RANGE, (int) mCurveEndY - REFRESH_RANGE,
-                    (int) mCurveEndX + REFRESH_RANGE, (int) mCurveEndY + REFRESH_RANGE);
-            
-            mCurveEndX  = (x + mX) / 2;
-            mCurveEndY = (y + mY) / 2;
-            mPath.quadTo(mX, mY, mCurveEndX, mCurveEndY);
-            
-            // union with the control point of the new curve
-            mInvalidRect.union((int) mX - REFRESH_RANGE, (int) mY - REFRESH_RANGE,
-                    (int) mX + REFRESH_RANGE, (int) mY + REFRESH_RANGE);
-            
-            // union with the end point of the new curve
-            mInvalidRect.union((int) mCurveEndX - REFRESH_RANGE, (int) mCurveEndY - REFRESH_RANGE,
-                    (int) mCurveEndX + REFRESH_RANGE, (int) mCurveEndY + REFRESH_RANGE);
-
-            areaToRefresh = mInvalidRect;
-            
-            mX = x;
-            mY = y;
-        }
-        
-
-        mPointBuffer.add(new GesturePoint(x, y, event.getEventTime()));
-
-        // pass the event to handlers
-        final ArrayList<GestureListener> listeners = mGestureListeners;
-        final int count = listeners.size();
-        for (int i = 0; i < count; i++) {
-            listeners.get(i).onGesture(this, event);
-        }
-        
-        return areaToRefresh;
-    }
-
-    private void touchUp(MotionEvent event) {
-        // add the stroke to the current gesture
-        mCurrentGesture.addStroke(new GestureStroke(mPointBuffer));
-
-        // add the stroke to the double buffer
-        mGesturePaint.setMaskFilter(BLUR_MASK_FILTER);
-        mBitmapCanvas.drawPath(mPath, mGesturePaint);
-        mGesturePaint.setMaskFilter(null);
-        
-        // pass the event to handlers
-        final ArrayList<GestureListener> listeners = mGestureListeners;
-        final int count = listeners.size();
-        for (int i = 0; i < count; i++) {
-            listeners.get(i).onFinishGesture(this, event);
-        }
-        
-        mPath = null;        
-        mPointBuffer = null;
-    }
-
-}
diff --git a/tests/sketch/src/com/android/gesture/GesturePoint.java b/tests/sketch/src/com/android/gesture/GesturePoint.java
deleted file mode 100644
index 560f893..0000000
--- a/tests/sketch/src/com/android/gesture/GesturePoint.java
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import java.io.DataInputStream;
-import java.io.IOException;
-
-/**
- * A timed point of a gesture stroke
- */
-
-public class GesturePoint {
-    public final float x;
-    public final float y;
-
-    public final long timestamp;
-
-    public GesturePoint(float x, float y, long t) {
-        this.x = x;
-        this.y = y;
-        timestamp = t;
-    }
-
-    static GesturePoint deserialize(DataInputStream in) throws IOException {
-        // Read X and Y
-        final float x = in.readFloat();
-        final float y = in.readFloat();
-        // Read timestamp
-        final long timeStamp = in.readLong();
-        return new GesturePoint(x, y, timeStamp);
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/GestureStroke.java b/tests/sketch/src/com/android/gesture/GestureStroke.java
deleted file mode 100644
index 79b42fe..0000000
--- a/tests/sketch/src/com/android/gesture/GestureStroke.java
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.graphics.Canvas;
-import android.graphics.Matrix;
-import android.graphics.Paint;
-import android.graphics.Path;
-import android.graphics.RectF;
-
-import java.io.IOException;
-import java.io.DataOutputStream;
-import java.io.DataInputStream;
-import java.util.ArrayList;
-
-/**
- * A gesture stroke started on a touch down and ended on a touch up.
- */
-public class GestureStroke {
-    public final RectF boundingBox;
-
-    public final float length;
-    public final float[] points;
-
-    private final long[] timestamps;
-    private Path mCachedPath;
-
-    /**
-     * Construct a gesture stroke from a list of gesture points
-     * 
-     * @param points
-     */
-    public GestureStroke(ArrayList<GesturePoint> points) {
-        final int count = points.size();
-        final float[] tmpPoints = new float[count * 2];
-        final long[] times = new long[count];
-
-        RectF bx = null;
-        float len = 0;
-        int index = 0;
-
-        for (int i = 0; i < count; i++) {
-            final GesturePoint p = points.get(i);
-            tmpPoints[i * 2] = p.x;
-            tmpPoints[i * 2 + 1] = p.y;
-            times[index] = p.timestamp;
-
-            if (bx == null) {
-                bx = new RectF();
-                bx.top = p.y;
-                bx.left = p.x;
-                bx.right = p.x;
-                bx.bottom = p.y;
-                len = 0;
-            } else {
-                len += Math.sqrt(Math.pow(p.x - tmpPoints[(i - 1) * 2], 2)
-                        + Math.pow(p.y - tmpPoints[(i -1 ) * 2 + 1], 2));
-                bx.union(p.x, p.y);
-            }
-            index++;
-        }
-        
-        timestamps = times;
-        this.points = tmpPoints;
-        boundingBox = bx;
-        length = len;
-    }
-
-    /**
-     * Draw the gesture with a given canvas and paint
-     * 
-     * @param canvas
-     */
-    void draw(Canvas canvas, Paint paint) {
-        if (mCachedPath == null) {
-            final float[] localPoints = points;
-            final int count = localPoints.length;
-
-            Path path = null;
-
-            float mX = 0;
-            float mY = 0;
-
-            for (int i = 0; i < count; i += 2) {
-                float x = localPoints[i];
-                float y = localPoints[i + 1];
-                if (path == null) {
-                    path = new Path();
-                    path.moveTo(x, y);
-                    mX = x;
-                    mY = y;
-                } else {
-                    float dx = Math.abs(x - mX);
-                    float dy = Math.abs(y - mY);
-                    if (dx >= 3 || dy >= 3) {
-                        path.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
-                        mX = x;
-                        mY = y;
-                    }
-                }
-            }
-
-            mCachedPath = path;
-        }
-
-        canvas.drawPath(mCachedPath, paint);
-    }
-
-    /**
-     * Convert the stroke to a Path based on the number of points
-     * 
-     * @param width the width of the bounding box of the target path
-     * @param height the height of the bounding box of the target path
-     * @param numSample the number of points needed
-     * @return the path
-     */
-    public Path toPath(float width, float height, int numSample) {
-        final float[] pts = GestureUtilities.temporalSampling(this, numSample);
-        final RectF rect = boundingBox;
-        final float scale = height / rect.height();
-
-        final Matrix matrix = new Matrix();
-        matrix.setTranslate(-rect.left, -rect.top);
-        matrix.postScale(scale, scale);
-        matrix.mapPoints(pts);
-
-        float mX = 0;
-        float mY = 0;
-
-        Path path = null;
-
-        final int count = pts.length;
-
-        for (int i = 0; i < count; i += 2) {
-            float x = pts[i];
-            float y = pts[i + 1];
-            if (path == null) {
-                path = new Path();
-                path.moveTo(x, y);
-                mX = x;
-                mY = y;
-            } else {
-                float dx = Math.abs(x - mX);
-                float dy = Math.abs(y - mY);
-                if (dx >= GestureOverlay.TOUCH_TOLERANCE || dy >= GestureOverlay.TOUCH_TOLERANCE) {
-                    path.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
-                    mX = x;
-                    mY = y;
-                }
-            }
-        }
-
-        return path;
-    }
-
-    void serialize(DataOutputStream out) throws IOException {
-        final float[] pts = points;
-        final long[] times = timestamps;
-        final int count = points.length;
-
-        // Write number of points
-        out.writeInt(count / 2);
-
-        for (int i = 0; i < count; i += 2) {
-            // Write X
-            out.writeFloat(pts[i]);
-            // Write Y
-            out.writeFloat(pts[i + 1]);
-            // Write timestamp
-            out.writeLong(times[i / 2]);
-        }
-    }
-
-    static GestureStroke deserialize(DataInputStream in) throws IOException {
-        // Number of points
-        final int count = in.readInt();
-
-        final ArrayList<GesturePoint> points = new ArrayList<GesturePoint>(count);
-        for (int i = 0; i < count; i++) {
-            points.add(GesturePoint.deserialize(in));
-        }
-
-        return new GestureStroke(points);
-    }    
-
-    /**
-     * Convert the stroke to string
-     */
-    @Override
-    public String toString() {
-        final StringBuilder str = new StringBuilder(GestureConstants.STROKE_STRING_BUFFER_SIZE);
-        final float[] pts = points;
-        final long[] times = timestamps;
-        final int count = points.length;
-
-        for (int i = 0; i < count; i += 2) {
-            str.append(pts[i]).append(GestureConstants.STRING_STROKE_DELIIMITER);
-            str.append(pts[i + 1]).append(GestureConstants.STRING_STROKE_DELIIMITER);
-            str.append(times[i / 2]).append(GestureConstants.STRING_STROKE_DELIIMITER);
-        }
-
-        return str.toString();
-    }
-
-    /**
-     * Invalidate the cached path that is used for rendering the stroke
-     */
-    public void invalidate() {
-        mCachedPath = null;
-    }
-    
-    /**
-     * Compute an oriented bounding box of the stroke
-     * @return OrientedBoundingBox
-     */
-    public OrientedBoundingBox computeOrientedBoundingBox() {
-        return GestureUtilities.computeOrientedBoundingBox(points);
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/GestureUtilities.java b/tests/sketch/src/com/android/gesture/GestureUtilities.java
deleted file mode 100755
index 6d73c2d..0000000
--- a/tests/sketch/src/com/android/gesture/GestureUtilities.java
+++ /dev/null
@@ -1,444 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.graphics.RectF;
-import android.graphics.Matrix;
-import android.util.Log;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.io.Closeable;
-import java.io.IOException;
-
-import static com.android.gesture.GestureConstants.*;
-
-final class GestureUtilities {
-    private static final int TEMPORAL_SAMPLING_RATE = 16;
-
-    private GestureUtilities() {
-    }
-
-    /**
-     * Closes the specified stream.
-     *
-     * @param stream The stream to close.
-     */
-    static void closeStream(Closeable stream) {
-        if (stream != null) {
-            try {
-                stream.close();
-            } catch (IOException e) {
-                Log.e(LOG_TAG, "Could not close stream", e);
-            }
-        }
-    }
-
-    static float[] spatialSampling(Gesture gesture, int sampleMatrixDimension) {
-        final float targetPatchSize = sampleMatrixDimension - 1; // edge inclusive
-        float[] sample = new float[sampleMatrixDimension * sampleMatrixDimension];
-        Arrays.fill(sample, 0);
-
-        RectF rect = gesture.getBoundingBox();
-        float sx = targetPatchSize / rect.width();
-        float sy = targetPatchSize / rect.height();
-        float scale = sx < sy ? sx : sy;
-
-        Matrix trans = new Matrix();
-        trans.setScale(scale, scale);
-        trans.preTranslate(-rect.centerX(), -rect.centerY());
-        trans.postTranslate(targetPatchSize / 2, targetPatchSize / 2);
-
-        final ArrayList<GestureStroke> strokes = gesture.getStrokes();
-        final int count = strokes.size();
-
-        int size;
-        float xpos;
-        float ypos;
-
-        for (int index = 0; index < count; index++) {
-            final GestureStroke stroke = strokes.get(index);
-            size = stroke.points.length;
-
-            final float[] pts = new float[size];
-
-            trans.mapPoints(pts, 0, stroke.points, 0, size / 2);
-            float segmentEndX = -1;
-            float segmentEndY = -1;
-            
-            for (int i = 0; i < size; i += 2) {
-                
-                float segmentStartX = pts[i] < 0 ? 0 : pts[i];
-                float segmentStartY = pts[i + 1] < 0 ? 0 : pts[i + 1];
-                
-                if (segmentStartX > targetPatchSize) {
-                    segmentStartX = targetPatchSize;
-                } 
-                
-                if (segmentStartY > targetPatchSize) {
-                    segmentStartY = targetPatchSize;
-                }
-                 
-                plot(segmentStartX, segmentStartY, sample, sampleMatrixDimension);
-                
-                if (segmentEndX != -1) {
-                    // evaluate horizontally
-                    if (segmentEndX > segmentStartX) {
-                        xpos = (float) Math.ceil(segmentStartX);
-                        float slope = (segmentEndY - segmentStartY) / (segmentEndX - segmentStartX);
-                        while (xpos < segmentEndX) {
-                            ypos = slope * (xpos - segmentStartX) + segmentStartY;
-                            plot(xpos, ypos, sample, sampleMatrixDimension); 
-                            xpos++;
-                        }
-                    } else if (segmentEndX < segmentStartX){
-                        xpos = (float) Math.ceil(segmentEndX);
-                        float slope = (segmentEndY - segmentStartY) / (segmentEndX - segmentStartX);
-                        while (xpos < segmentStartX) {
-                            ypos = slope * (xpos - segmentStartX) + segmentStartY;
-                            plot(xpos, ypos, sample, sampleMatrixDimension); 
-                            xpos++;
-                        }
-                    }
-
-                    // evaluating vertically
-                    if (segmentEndY > segmentStartY) {
-                        ypos = (float) Math.ceil(segmentStartY);
-                        float invertSlope = (segmentEndX - segmentStartX) / (segmentEndY - segmentStartY);
-                        while (ypos < segmentEndY) {
-                            xpos = invertSlope * (ypos - segmentStartY) + segmentStartX;
-                            plot(xpos, ypos, sample, sampleMatrixDimension); 
-                            ypos++;
-                        }
-                    } else if (segmentEndY < segmentStartY) {
-                        ypos = (float) Math.ceil(segmentEndY);
-                        float invertSlope = (segmentEndX - segmentStartX) / (segmentEndY - segmentStartY);
-                        while (ypos < segmentStartY) {
-                            xpos = invertSlope * (ypos - segmentStartY) + segmentStartX; 
-                            plot(xpos, ypos, sample, sampleMatrixDimension); 
-                            ypos++;
-                        }
-                    }
-                } 
-                
-                segmentEndX = segmentStartX;
-                segmentEndY = segmentStartY;
-            }
-        }
-
-
-        return sample;
-    }
-
-    private static void plot(float x, float y, float[] sample, int sampleSize) {
-        x = x < 0 ? 0 : x;
-        y = y < 0 ? 0 : y;
-        int xFloor = (int) Math.floor(x);
-        int xCeiling = (int) Math.ceil(x);
-        int yFloor = (int) Math.floor(y);
-        int yCeiling = (int) Math.ceil(y);
-        
-        // if it's an integer
-        if (x == xFloor && y == yFloor) {
-            int index = yCeiling * sampleSize + xCeiling;
-            if (sample[index] < 1){
-                sample[index] = 1;
-            }
-        } else {
-            double topLeft = Math.sqrt(Math.pow(xFloor - x, 2) + Math.pow(yFloor - y, 2));
-            double topRight = Math.sqrt(Math.pow(xCeiling - x, 2) + Math.pow(yFloor - y, 2));
-            double btmLeft = Math.sqrt(Math.pow(xFloor - x, 2) + Math.pow(yCeiling - y, 2));
-            double btmRight = Math.sqrt(Math.pow(xCeiling - x, 2) + Math.pow(yCeiling - y, 2));
-            double sum = topLeft + topRight + btmLeft + btmRight;
-            
-            double value = topLeft / sum;
-            int index = yFloor * sampleSize + xFloor;
-            if (value > sample[index]){
-                sample[index] = (float) value;
-            }
-            
-            value = topRight / sum;
-            index = yFloor * sampleSize + xCeiling;
-            if (value > sample[index]){
-                sample[index] = (float) value;
-            }
-            
-            value = btmLeft / sum;
-            index = yCeiling * sampleSize + xFloor;
-            if (value > sample[index]){
-                sample[index] = (float) value;
-            }
-            
-            value = btmRight / sum;
-            index = yCeiling * sampleSize + xCeiling;
-            if (value > sample[index]){
-                sample[index] = (float) value;
-            }
-        }
-    }
-    
-    /**
-     * Featurize a stroke into a vector of a given number of elements
-     * 
-     * @param stroke
-     * @param sampleSize
-     * @return a float array
-     */
-    static float[] temporalSampling(GestureStroke stroke, int sampleSize) {
-        final float increment = stroke.length / (sampleSize - 1);
-        int vectorLength = sampleSize * 2;
-        float[] vector = new float[vectorLength];
-        float distanceSoFar = 0;
-        float[] pts = stroke.points;
-        float lstPointX = pts[0];
-        float lstPointY = pts[1];
-        int index = 0;
-        float currentPointX = Float.MIN_VALUE;
-        float currentPointY = Float.MIN_VALUE;
-        vector[index] = lstPointX;
-        index++;
-        vector[index] = lstPointY;
-        index++;
-        int i = 0;
-        int count = pts.length / 2;
-        while (i < count) {
-            if (currentPointX == Float.MIN_VALUE) {
-                i++;
-                if (i >= count) {
-                    break;
-                }
-                currentPointX = pts[i * 2];
-                currentPointY = pts[i * 2 + 1];
-            }
-            float deltaX = currentPointX - lstPointX;
-            float deltaY = currentPointY - lstPointY;
-            float distance = (float) Math.sqrt(deltaX * deltaX + deltaY * deltaY);
-            if (distanceSoFar + distance >= increment) {
-                float ratio = (increment - distanceSoFar) / distance;
-                float nx = lstPointX + ratio * deltaX;
-                float ny = lstPointY + ratio * deltaY;
-                vector[index] = nx;
-                index++;
-                vector[index] = ny;
-                index++;
-                lstPointX = nx;
-                lstPointY = ny;
-                distanceSoFar = 0;
-            } else {
-                lstPointX = currentPointX;
-                lstPointY = currentPointY;
-                currentPointX = Float.MIN_VALUE;
-                currentPointY = Float.MIN_VALUE;
-                distanceSoFar += distance;
-            }
-        }
-
-        for (i = index; i < vectorLength; i += 2) {
-            vector[i] = lstPointX;
-            vector[i + 1] = lstPointY;
-        }
-        return vector;
-    }
-
-    /**
-     * Calculate the centroid 
-     * 
-     * @param points
-     * @return the centroid
-     */
-    static float[] computeCentroid(float[] points) {
-        float centerX = 0;
-        float centerY = 0;
-        int count = points.length;
-        for (int i = 0; i < count; i++) {
-            centerX += points[i];
-            i++;
-            centerY += points[i];
-        }
-        float[] center = new float[2];
-        center[0] = 2 * centerX / count;
-        center[1] = 2 * centerY / count;
-
-        return center;
-    }
-
-    /**
-     * calculate the variance-covariance matrix, treat each point as a sample
-     * 
-     * @param points
-     * @return the covariance matrix
-     */
-    private static double[][] computeCoVariance(float[] points) {
-        double[][] array = new double[2][2];
-        array[0][0] = 0;
-        array[0][1] = 0;
-        array[1][0] = 0;
-        array[1][1] = 0;
-        int count = points.length;
-        for (int i = 0; i < count; i++) {
-            float x = points[i];
-            i++;
-            float y = points[i];
-            array[0][0] += x * x;
-            array[0][1] += x * y;
-            array[1][0] = array[0][1];
-            array[1][1] += y * y;
-        }
-        array[0][0] /= (count / 2);
-        array[0][1] /= (count / 2);
-        array[1][0] /= (count / 2);
-        array[1][1] /= (count / 2);
-
-        return array;
-    }
-
-    static float computeTotalLength(float[] points) {
-        float sum = 0;
-        int count = points.length - 4;
-        for (int i = 0; i < count; i += 2) {
-            float dx = points[i + 2] - points[i];
-            float dy = points[i + 3] - points[i + 1];
-            sum += Math.sqrt(dx * dx + dy * dy);
-        }
-        return sum;
-    }
-
-    static double computeStraightness(float[] points) {
-        float totalLen = computeTotalLength(points);
-        float dx = points[2] - points[0];
-        float dy = points[3] - points[1];
-        return Math.sqrt(dx * dx + dy * dy) / totalLen;
-    }
-
-    static double computeStraightness(float[] points, float totalLen) {
-        float dx = points[2] - points[0];
-        float dy = points[3] - points[1];
-        return Math.sqrt(dx * dx + dy * dy) / totalLen;
-    }
-
-    /**
-     * Calculate the squared Euclidean distance between two vectors
-     * 
-     * @param vector1
-     * @param vector2
-     * @return the distance
-     */
-    static double squaredEuclideanDistance(float[] vector1, float[] vector2) {
-        double squaredDistance = 0;
-        int size = vector1.length;
-        for (int i = 0; i < size; i++) {
-            float difference = vector1[i] - vector2[i];
-            squaredDistance += difference * difference;
-        }
-        return squaredDistance / size;
-    }
-
-    /**
-     * Calculate the cosine distance between two instances
-     * 
-     * @param vector1
-     * @param vector2
-     * @return the distance between 0 and Math.PI
-     */
-    static double cosineDistance(float[] vector1, float[] vector2) {
-        float sum = 0;
-        int len = vector1.length;
-        for (int i = 0; i < len; i++) {
-            sum += vector1[i] * vector2[i];
-        }
-        return Math.acos(sum);
-    }
-
-    static OrientedBoundingBox computeOrientedBoundingBox(ArrayList<GesturePoint> pts) {
-        GestureStroke stroke = new GestureStroke(pts);
-        float[] points = temporalSampling(stroke, TEMPORAL_SAMPLING_RATE);
-        return computeOrientedBoundingBox(points);
-    }
-
-    static OrientedBoundingBox computeOrientedBoundingBox(float[] points) {
-        float[] meanVector = computeCentroid(points);
-        return computeOrientedBoundingBox(points, meanVector);
-    }
-
-    static OrientedBoundingBox computeOrientedBoundingBox(float[] points, float[] centroid) {
-        Matrix tr = new Matrix();
-        tr.setTranslate(-centroid[0], -centroid[1]);
-        tr.mapPoints(points);
-
-        double[][] array = computeCoVariance(points);
-        double[] targetVector = computeOrientation(array);
-
-        float angle;
-        if (targetVector[0] == 0 && targetVector[1] == 0) {
-            angle = -90;
-        } else { // -PI<alpha<PI
-            angle = (float) Math.atan2(targetVector[1], targetVector[0]);
-            angle = (float) (180 * angle / Math.PI);
-            android.graphics.Matrix trans = new android.graphics.Matrix();
-            trans.setRotate(-angle);
-            trans.mapPoints(points);
-        }
-
-        float minx = Float.MAX_VALUE;
-        float miny = Float.MAX_VALUE;
-        float maxx = Float.MIN_VALUE;
-        float maxy = Float.MIN_VALUE;
-        int count = points.length;
-        for (int i = 0; i < count; i++) {
-            if (points[i] < minx) {
-                minx = points[i];
-            }
-            if (points[i] > maxx) {
-                maxx = points[i];
-            }
-            i++;
-            if (points[i] < miny) {
-                miny = points[i];
-            }
-            if (points[i] > maxy) {
-                maxy = points[i];
-            }
-        }
-
-        return new OrientedBoundingBox(angle, centroid[0], centroid[1], maxx - minx, maxy - miny);
-    }
-
-    private static double[] computeOrientation(double[][] covarianceMatrix) {
-        double[] targetVector = new double[2];
-        if (covarianceMatrix[0][1] == 0 || covarianceMatrix[1][0] == 0) {
-            targetVector[0] = 1;
-            targetVector[1] = 0;
-        }
-
-        double a = -covarianceMatrix[0][0] - covarianceMatrix[1][1];
-        double b = covarianceMatrix[0][0] * covarianceMatrix[1][1] - covarianceMatrix[0][1]
-                * covarianceMatrix[1][0];
-        double value = a / 2;
-        double rightside = Math.sqrt(Math.pow(value, 2) - b);
-        double lambda1 = -value + rightside;
-        double lambda2 = -value - rightside;
-        if (lambda1 == lambda2) {
-            targetVector[0] = 0;
-            targetVector[1] = 0;
-        } else {
-            double lambda = lambda1 > lambda2 ? lambda1 : lambda2;
-            targetVector[0] = 1;
-            targetVector[1] = (lambda - covarianceMatrix[0][0]) / covarianceMatrix[0][1];
-        }
-        return targetVector;
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/Instance.java b/tests/sketch/src/com/android/gesture/Instance.java
deleted file mode 100755
index 502a0fa..0000000
--- a/tests/sketch/src/com/android/gesture/Instance.java
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.graphics.Matrix;
-
-/**
- * An instance represents a sample if the label is available or a query if the
- * label is null.
- */
-class Instance {
-    private static final int SEQUENCE_SAMPLE_SIZE = 16;
-
-    private static final int PATCH_SAMPLE_SIZE = 16;
-
-    private final static float[] ORIENTATIONS = {
-            0, 45, 90, 135, 180, -0, -45, -90, -135, -180
-    };
-
-    // the feature vector
-    final float[] vector;
-
-    // the label can be null
-    final String label;
-
-    // the id of the instance
-    final long id;
-    
-    private Instance(long id, float[] sample, String sampleName) {
-        this.id = id;
-        vector = sample;
-        label = sampleName;
-    }
-    
-    private void normalize() {
-        float[] sample = vector;
-        float sum = 0;
-
-        int size = sample.length;
-        for (int i = 0; i < size; i++) {
-            sum += sample[i] * sample[i];
-        }
-
-        float magnitude = (float) Math.sqrt(sum);
-        for (int i = 0; i < size; i++) {
-            sample[i] /= magnitude;
-        }
-    }
-
-    /**
-     * create a learning instance for a single stroke gesture
-     * 
-     * @param gesture
-     * @param label
-     * @return the instance
-     */
-    static Instance createInstance(int samplingType, Gesture gesture, String label) {
-        float[] pts;
-        Instance instance;
-        if (samplingType == GestureLibrary.SEQUENCE_SENSITIVE) {
-            pts = temporalSampler(samplingType, gesture);
-            instance = new Instance(gesture.getID(), pts, label);
-            instance.normalize();
-        } else {
-            pts = spatialSampler(gesture);
-            instance = new Instance(gesture.getID(), pts, label);
-        }
-        return instance;
-    }
-    
-    private static float[] spatialSampler(Gesture gesture) {
-        return GestureUtilities.spatialSampling(gesture, PATCH_SAMPLE_SIZE);
-    }
-
-    private static float[] temporalSampler(int samplingType, Gesture gesture) {
-        float[] pts = GestureUtilities.temporalSampling(gesture.getStrokes().get(0),
-                SEQUENCE_SAMPLE_SIZE);
-        float[] center = GestureUtilities.computeCentroid(pts);
-        float orientation = (float) Math.atan2(pts[1] - center[1], pts[0] - center[0]);
-        orientation *= 180 / Math.PI;
-
-        float adjustment = -orientation;
-        if (samplingType == GestureLibrary.ORIENTATION_SENSITIVE) {
-            int count = ORIENTATIONS.length;
-            for (int i = 0; i < count; i++) {
-                float delta = ORIENTATIONS[i] - orientation;
-                if (Math.abs(delta) < Math.abs(adjustment)) {
-                    adjustment = delta;
-                }
-            }
-        }
-
-        Matrix m = new Matrix();
-        m.setTranslate(-center[0], -center[1]);
-        m.postRotate(adjustment);
-        m.mapPoints(pts);
-
-        return pts;
-    }
-
-}
diff --git a/tests/sketch/src/com/android/gesture/InstanceLearner.java b/tests/sketch/src/com/android/gesture/InstanceLearner.java
deleted file mode 100644
index 4495256..0000000
--- a/tests/sketch/src/com/android/gesture/InstanceLearner.java
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.util.Config;
-import android.util.Log;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.Iterator;
-import java.util.TreeMap;
-
-/**
- * An implementation of an instance-based learner
- */
-
-class InstanceLearner extends Learner {
-
-    private static final String LOGTAG = "InstanceLearner";
-
-    @Override
-    ArrayList<Prediction> classify(int gestureType, float[] vector) {
-        ArrayList<Prediction> predictions = new ArrayList<Prediction>();
-        ArrayList<Instance> instances = getInstances();
-        int count = instances.size();
-        TreeMap<String, Double> label2score = new TreeMap<String, Double>();
-        for (int i = 0; i < count; i++) {
-            Instance sample = instances.get(i);
-            if (sample.vector.length != vector.length) {
-                continue;
-            }
-            double distance;
-            if (gestureType == GestureLibrary.SEQUENCE_SENSITIVE) {
-                distance = GestureUtilities.cosineDistance(sample.vector, vector);
-            } else {
-                distance = GestureUtilities.squaredEuclideanDistance(sample.vector, vector);
-            }
-            double weight;
-            if (distance == 0) {
-                weight = Double.MAX_VALUE;
-            } else {
-                weight = 1 / distance;
-            }
-            Double score = label2score.get(sample.label);
-            if (score == null || weight > score) {
-                label2score.put(sample.label, weight);
-            }
-        }
-
-        double sum = 0;
-        Iterator<String> lableIterator = label2score.keySet().iterator();
-        while (lableIterator.hasNext()) {
-            String name = lableIterator.next();
-            double score = label2score.get(name);
-            sum += score;
-            predictions.add(new Prediction(name, score));
-        }
-
-        // normalize
-        Iterator<Prediction> predictionIterator = predictions.iterator();
-        while (predictionIterator.hasNext()) {
-            Prediction name = predictionIterator.next();
-            name.score /= sum;
-        }
-
-        Collections.sort(predictions, new Comparator<Prediction>() {
-            public int compare(Prediction object1, Prediction object2) {
-                double score1 = object1.score;
-                double score2 = object2.score;
-                if (score1 > score2) {
-                    return -1;
-                } else if (score1 < score2) {
-                    return 1;
-                } else {
-                    return 0;
-                }
-            }
-        });
-
-        if (Config.DEBUG) {
-            predictionIterator = predictions.iterator();
-            while (predictionIterator.hasNext()) {
-                Prediction name = predictionIterator.next();
-                Log.v(LOGTAG, "prediction [" + name.name + " = " + name.score + "]");
-            }
-        }
-
-        return predictions;
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/Learner.java b/tests/sketch/src/com/android/gesture/Learner.java
deleted file mode 100755
index 15b2053..0000000
--- a/tests/sketch/src/com/android/gesture/Learner.java
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import java.util.ArrayList;
-
-/**
- * The abstract class of a gesture learner
- */
-abstract class Learner {
-    private final ArrayList<Instance> mInstances = new ArrayList<Instance>();
-
-    /**
-     * Add an instance to the learner
-     * 
-     * @param instance
-     */
-    void addInstance(Instance instance) {
-        mInstances.add(instance);
-    }
-
-    /**
-     * Retrieve all the instances
-     * 
-     * @return instances
-     */
-    ArrayList<Instance> getInstances() {
-        return mInstances;
-    }
-
-    /**
-     * Remove an instance based on its id
-     * 
-     * @param id
-     */
-    void removeInstance(long id) {
-        ArrayList<Instance> instances = mInstances;
-        int count = instances.size();
-        for (int i = 0; i < count; i++) {
-            Instance instance = instances.get(i);
-            if (id == instance.id) {
-                instances.remove(instance);
-                return;
-            }
-        }
-    }
-
-    /**
-     * Remove all the instances of a category
-     * 
-     * @param name the category name
-     */
-    void removeInstances(String name) {
-        final ArrayList<Instance> toDelete = new ArrayList<Instance>();
-        final ArrayList<Instance> instances = mInstances;
-        final int count = instances.size();
-
-        for (int i = 0; i < count; i++) {
-            final Instance instance = instances.get(i);
-            // the label can be null, as specified in Instance
-            if ((instance.label == null && name == null) || instance.label.equals(name)) {
-                toDelete.add(instance);
-            }
-        }
-        instances.removeAll(toDelete);
-    }
-
-    abstract ArrayList<Prediction> classify(int gestureType, float[] vector);
-}
diff --git a/tests/sketch/src/com/android/gesture/LetterRecognizer.java b/tests/sketch/src/com/android/gesture/LetterRecognizer.java
deleted file mode 100644
index 07a5f31..0000000
--- a/tests/sketch/src/com/android/gesture/LetterRecognizer.java
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * Copyright (C) 2009 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.gesture;
-
-import android.content.Context;
-import android.content.res.Resources;
-import android.util.Log;
-
-import java.io.BufferedInputStream;
-import java.io.DataInputStream;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashMap;
-
-import static com.android.gesture.GestureConstants.LOG_TAG;
-
-public class LetterRecognizer {
-    public final static int LATIN_LOWERCASE = 0;
-
-    private SigmoidUnit[] mHiddenLayer;
-    private SigmoidUnit[] mOutputLayer;
-
-    private final String[] mClasses;
-
-    private final int mPatchSize;
-    
-    static final String GESTURE_FILE_NAME = "letters.gestures";
-
-    private GestureLibrary mGestureLibrary; 
-    private final static int ADJUST_RANGE = 3;
-    
-    private static class SigmoidUnit {
-        final float[] mWeights;
-
-        SigmoidUnit(float[] weights) {
-            mWeights = weights;
-        }
-
-        private float compute(float[] inputs) {
-            float sum = 0;
-
-            final int count = inputs.length;
-            final float[] weights = mWeights;
-
-            for (int i = 0; i < count; i++) {
-                sum += inputs[i] * weights[i];
-            }
-            sum += weights[weights.length - 1];
-
-            return 1.0f / (float) (1 + Math.exp(-sum));
-        }
-    }
-
-    private LetterRecognizer(int numOfInput, int numOfHidden, String[] classes) {
-        mPatchSize = (int)Math.sqrt(numOfInput);
-        mHiddenLayer = new SigmoidUnit[numOfHidden];
-        mClasses = classes;
-        mOutputLayer = new SigmoidUnit[classes.length];
-    }
-    
-    public void save() {
-        mGestureLibrary.save();
-    }
-
-    public static LetterRecognizer getLetterRecognizer(Context context, int type) {
-        switch (type) {
-            case LATIN_LOWERCASE: {
-                return createFromResource(context, com.android.internal.R.raw.latin_lowercase);
-            }
-        }
-        return null;
-    }
-
-    public ArrayList<Prediction> recognize(Gesture gesture) {
-        float[] query = GestureUtilities.spatialSampling(gesture, mPatchSize);
-        ArrayList<Prediction> predictions = classify(query);
-        if (mGestureLibrary != null) {
-            adjustPrediction(gesture, predictions);
-        }
-        return predictions;
-    }
-
-    private ArrayList<Prediction> classify(float[] vector) {
-        final float[] intermediateOutput = compute(mHiddenLayer, vector);
-        final float[] output = compute(mOutputLayer, intermediateOutput);
-        final ArrayList<Prediction> predictions = new ArrayList<Prediction>();
-
-        double sum = 0;
-
-        final String[] classes = mClasses;
-        final int count = classes.length;
-
-        for (int i = 0; i < count; i++) {
-            double score = output[i];
-            sum += score;
-            predictions.add(new Prediction(classes[i], score));
-        }
-
-        for (int i = 0; i < count; i++) {
-            predictions.get(i).score /= sum;
-        }
-
-        Collections.sort(predictions, new Comparator<Prediction>() {
-            public int compare(Prediction object1, Prediction object2) {
-                double score1 = object1.score;
-                double score2 = object2.score;
-                if (score1 > score2) {
-                    return -1;
-                } else if (score1 < score2) {
-                    return 1;
-                } else {
-                    return 0;
-                }
-            }
-        });
-        return predictions;
-    }
-
-    private float[] compute(SigmoidUnit[] layer, float[] input) {
-        final float[] output = new float[layer.length];
-        final int count = layer.length;
-
-        for (int i = 0; i < count; i++) {
-            output[i] = layer[i].compute(input);
-        }
-
-        return output;
-    }
-
-    private static LetterRecognizer createFromResource(Context context, int resourceID) {
-        final Resources resources = context.getResources();
-
-        DataInputStream in = null;
-        LetterRecognizer classifier = null;
-
-        try {
-            in = new DataInputStream(new BufferedInputStream(resources.openRawResource(resourceID),
-                    GestureConstants.IO_BUFFER_SIZE));
-
-            final int iCount = in.readInt();
-            final int hCount = in.readInt();
-            final int oCount = in.readInt();
-
-            final String[] classes = new String[oCount];
-            for (int i = 0; i < classes.length; i++) {
-                classes[i] = in.readUTF();
-            }
-
-            classifier = new LetterRecognizer(iCount, hCount, classes);
-            SigmoidUnit[] hiddenLayer = new SigmoidUnit[hCount];
-            SigmoidUnit[] outputLayer = new SigmoidUnit[oCount];
-
-            for (int i = 0; i < hCount; i++) {
-                float[] weights = new float[iCount + 1];
-                for (int j = 0; j <= iCount; j++) {
-                    weights[j] = in.readFloat();
-                }
-                hiddenLayer[i] = new SigmoidUnit(weights);
-            }
-
-            for (int i = 0; i < oCount; i++) {
-                float[] weights = new float[hCount + 1];
-                for (int j = 0; j <= hCount; j++) {
-                    weights[j] = in.readFloat();
-                }
-                outputLayer[i] = new SigmoidUnit(weights);
-            }
-
-            classifier.mHiddenLayer = hiddenLayer;
-            classifier.mOutputLayer = outputLayer;
-
-        } catch (IOException e) {
-            Log.d(LOG_TAG, "Failed to load handwriting data:", e);
-        } finally {
-            GestureUtilities.closeStream(in);
-        }
-
-        return classifier;
-    }
-    
-    public void enablePersonalization(boolean enable) {
-        if (enable) {
-            mGestureLibrary = new GestureLibrary(GESTURE_FILE_NAME);
-            mGestureLibrary.setSequenceType(GestureLibrary.SEQUENCE_INVARIANT);
-            mGestureLibrary.load();
-        } else {
-            mGestureLibrary = null;
-        }
-    }
-
-    public void addExample(String letter, Gesture example) {
-        mGestureLibrary.addGesture(letter, example);
-    }
-    
-    private void adjustPrediction(Gesture query, ArrayList<Prediction> predictions) {
-        ArrayList<Prediction> results = mGestureLibrary.recognize(query);
-        HashMap<String, Prediction> topNList = new HashMap<String, Prediction>();
-        for (int j = 0; j < ADJUST_RANGE; j++) {
-            Prediction prediction = predictions.remove(0);
-            topNList.put(prediction.name, prediction);
-        }
-        int count = results.size();
-        for (int j = count - 1; j >= 0 && !topNList.isEmpty(); j--) {
-            Prediction item = results.get(j);
-            Prediction original = topNList.get(item.name);
-            if (original != null) {
-                predictions.add(0, original);
-                topNList.remove(item.name);
-            }
-        }
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/OrientedBoundingBox.java b/tests/sketch/src/com/android/gesture/OrientedBoundingBox.java
deleted file mode 100644
index a07d125..0000000
--- a/tests/sketch/src/com/android/gesture/OrientedBoundingBox.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.graphics.Matrix;
-import android.graphics.Path;
-
-/**
- * An oriented bounding box
- */
-public class OrientedBoundingBox {
-    public final float squareness;
-
-    public final float width;
-    public final float height;
-
-    public final float orientation; 
-
-    public final float centerX;
-    public final float centerY;
-
-    OrientedBoundingBox(float angle, float cx, float cy, float w, float h) {
-        orientation = angle;
-        width = w;
-        height = h;
-        centerX = cx;
-        centerY = cy;
-        float ratio = w / h;
-        if (ratio > 1) {
-            squareness = 1 / ratio;
-        } else {
-            squareness = ratio;
-        }
-    }
-
-    public Path toPath() {
-        Path path = new Path();
-        float[] point = new float[2];
-        point[0] = -width / 2;
-        point[1] = height / 2;
-        Matrix matrix = new Matrix();
-        matrix.setRotate(orientation);
-        matrix.postTranslate(centerX, centerY);
-        matrix.mapPoints(point);
-        path.moveTo(point[0], point[1]);
-
-        point[0] = -width / 2;
-        point[1] = -height / 2;
-        matrix.mapPoints(point);
-        path.lineTo(point[0], point[1]);
-
-        point[0] = width / 2;
-        point[1] = -height / 2;
-        matrix.mapPoints(point);
-        path.lineTo(point[0], point[1]);
-
-        point[0] = width / 2;
-        point[1] = height / 2;
-        matrix.mapPoints(point);
-        path.lineTo(point[0], point[1]);
-
-        path.close();
-
-        return path;
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/Prediction.java b/tests/sketch/src/com/android/gesture/Prediction.java
deleted file mode 100755
index 92d3ba4..0000000
--- a/tests/sketch/src/com/android/gesture/Prediction.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-public class Prediction {
-    public final String name;
-
-    public double score;
-
-    Prediction(String label, double predictionScore) {
-        name = label;
-        score = predictionScore;
-    }
-
-    @Override
-    public String toString() {
-        return name;
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/TouchThroughGesturing.java b/tests/sketch/src/com/android/gesture/TouchThroughGesturing.java
deleted file mode 100644
index fc878c8..0000000
--- a/tests/sketch/src/com/android/gesture/TouchThroughGesturing.java
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Copyright (C) 2008-2009 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.gesture;
-
-import android.graphics.Color;
-import android.view.MotionEvent;
-import android.view.View;
-
-import java.util.ArrayList;
-
-/**
- * TouchThroughGesturing implements the interaction behavior that allows a user
- * to gesture over a regular UI widget such as ListView and at the same time,
- * still allows a user to perform basic interactions (clicking, scrolling and panning) 
- * with the underlying widget.
- */
-
-public class TouchThroughGesturing implements GestureListener {
-    public static final int SINGLE_STROKE = 0;
-    public static final int MULTIPLE_STROKE = 1;
-
-    private static final float STROKE_LENGTH_THRESHOLD = 30;
-    private static final float SQUARENESS_THRESHOLD = 0.275f;
-    private static final float ANGLE_THRESHOLD = 40;
-
-    private static final boolean STEAL_EVENTS = false;
-
-    public static final int DEFAULT_UNCERTAIN_GESTURE_COLOR = Color.argb(60, 255, 255, 0);
-
-    private boolean mIsGesturing = false;
-
-    private float mTotalLength;
-
-    private float mX;
-    private float mY;
-
-    // TODO: Use WeakReference?
-    private View mModel;
-
-    private int mGestureType = SINGLE_STROKE;
-    private int mUncertainGestureColor = DEFAULT_UNCERTAIN_GESTURE_COLOR;
-
-    // TODO: Use WeakReferences
-    private final ArrayList<GestureActionListener> mActionListeners =
-            new ArrayList<GestureActionListener>();
-
-    public TouchThroughGesturing(View model) {
-        mModel = model;
-    }
-
-    /**
-     * 
-     * @param type SINGLE_STROKE or MULTIPLE_STROKE
-     */
-    public void setGestureType(int type) {
-        mGestureType = type;
-    }
-    
-    public void setUncertainGestureColor(int color) {
-        mUncertainGestureColor = color;
-    }
-
-    public void onStartGesture(GestureOverlay overlay, MotionEvent event) {
-        if (mGestureType == MULTIPLE_STROKE) {
-            overlay.cancelFadingOut();
-        }
-
-        mX = event.getX();
-        mY = event.getY();
-        mTotalLength = 0;
-        mIsGesturing = false;
-
-        if (mGestureType == SINGLE_STROKE || overlay.getCurrentGesture() == null
-                || overlay.getCurrentGesture().getStrokesCount() == 0) {
-            overlay.setGestureColor(mUncertainGestureColor);
-        }
-
-        mModel.dispatchTouchEvent(event);
-    }
-
-    public void onGesture(GestureOverlay overlay, MotionEvent event) {
-        //noinspection PointlessBooleanExpression
-        if (!STEAL_EVENTS) {
-            mModel.dispatchTouchEvent(event);
-        }
-
-        if (mIsGesturing) {
-            return;
-        }
-
-        final float x = event.getX();
-        final float y = event.getY();
-        final float dx = x - mX;
-        final float dy = y - mY;
-
-        mTotalLength += (float)Math.sqrt(dx * dx + dy * dy);
-        mX = x;
-        mY = y;
-
-        if (mTotalLength > STROKE_LENGTH_THRESHOLD) {
-            final OrientedBoundingBox box =
-                    GestureUtilities.computeOrientedBoundingBox(overlay.getCurrentStroke());
-            float angle = Math.abs(box.orientation);
-            if (angle > 90) {
-                angle = 180 - angle;
-            }
-            if (box.squareness > SQUARENESS_THRESHOLD || angle < ANGLE_THRESHOLD) {
-                mIsGesturing = true;
-                overlay.setGestureColor(GestureOverlay.DEFAULT_GESTURE_COLOR);
-                if (STEAL_EVENTS) {
-                    event = MotionEvent.obtain(event.getDownTime(), System.currentTimeMillis(),
-                            MotionEvent.ACTION_UP, x, y, event.getPressure(), event.getSize(),
-                            event.getMetaState(), event.getXPrecision(), event.getYPrecision(),
-                            event.getDeviceId(), event.getEdgeFlags());
-                }
-            }
-        }
-
-        if (STEAL_EVENTS) {
-            mModel.dispatchTouchEvent(event);
-        }
-    }
-
-    public void onFinishGesture(GestureOverlay overlay, MotionEvent event) {
-        if (mIsGesturing) {
-            overlay.clear(true);
-
-            final ArrayList<GestureActionListener> listeners = mActionListeners;
-            final int count = listeners.size();
-
-            for (int i = 0; i < count; i++) {
-                listeners.get(i).onGesturePerformed(overlay, overlay.getCurrentGesture());
-            }
-        } else {
-            mModel.dispatchTouchEvent(event);
-            overlay.clear(false);
-        }
-    }
-
-    public void addGestureActionListener(GestureActionListener listener) {
-        mActionListeners.add(listener);
-    }
-
-    public void removeGestureActionListener(GestureActionListener listener) {
-        mActionListeners.remove(listener);
-    }
-
-    public boolean isGesturing() {
-        return mIsGesturing;
-    }
-}
diff --git a/tests/sketch/src/com/android/gesture/example/ContactListGestureOverlay.java b/tests/sketch/src/com/android/gesture/example/ContactListGestureOverlay.java
index 6eb2f23..eda4224 100644
--- a/tests/sketch/src/com/android/gesture/example/ContactListGestureOverlay.java
+++ b/tests/sketch/src/com/android/gesture/example/ContactListGestureOverlay.java
@@ -30,12 +30,11 @@ import android.view.Window;
 import android.widget.AdapterView;
 import android.widget.ListView;
 
-import com.android.gesture.Gesture;
-import com.android.gesture.GestureActionListener;
-import com.android.gesture.GestureOverlay;
-import com.android.gesture.LetterRecognizer;
-import com.android.gesture.Prediction;
-import com.android.gesture.TouchThroughGesturing;
+import android.gesture.Gesture;
+import android.gesture.GestureOverlayView;
+import android.gesture.LetterRecognizer;
+import android.gesture.Prediction;
+import android.gesture.TouchThroughGestureListener;
 
 import java.util.ArrayList;
 
@@ -52,7 +51,7 @@ public class ContactListGestureOverlay extends Activity {
 
     private ContactAdapter mContactAdapter;
 
-    private TouchThroughGesturing mGestureProcessor;
+    private TouchThroughGestureListener mGestureProcessor;
 
     private LetterRecognizer mRecognizer;
 
@@ -67,7 +66,7 @@ public class ContactListGestureOverlay extends Activity {
         setProgressBarIndeterminateVisibility(true);
 
         // create a letter recognizer
-        mRecognizer = LetterRecognizer.getLetterRecognizer(this, LetterRecognizer.LATIN_LOWERCASE);
+        mRecognizer = LetterRecognizer.getLetterRecognizer(this, LetterRecognizer.RECOGNIZER_LATIN_LOWERCASE);
 
         // load the contact list
         mContactList = (ListView) findViewById(R.id.list);
@@ -95,11 +94,11 @@ public class ContactListGestureOverlay extends Activity {
         setProgressBarIndeterminateVisibility(false);
 
         // add a gesture overlay on top of the ListView
-        GestureOverlay overlay = new GestureOverlay(this);
-        mGestureProcessor = new TouchThroughGesturing(mContactList);
-        mGestureProcessor.setGestureType(TouchThroughGesturing.MULTIPLE_STROKE);
-        mGestureProcessor.addGestureActionListener(new GestureActionListener() {
-            public void onGesturePerformed(GestureOverlay overlay, Gesture gesture) {
+        GestureOverlayView overlay = new GestureOverlayView(this);
+        mGestureProcessor = new TouchThroughGestureListener(mContactList);
+        mGestureProcessor.setGestureType(TouchThroughGestureListener.MULTIPLE_STROKE);
+        mGestureProcessor.addOnGestureActionListener(new TouchThroughGestureListener.OnGesturePerformedListener() {
+            public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
                 ArrayList<Prediction> predictions = mRecognizer.recognize(gesture);
                 if (!predictions.isEmpty()) {
                     Log.v(LOGTAG, "1st Prediction : " + predictions.get(0).name);
@@ -112,7 +111,7 @@ public class ContactListGestureOverlay extends Activity {
                 }
             }
         });
-        overlay.addGestureListener(mGestureProcessor);
+        overlay.addOnGestureListener(mGestureProcessor);
         ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(
                 ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
         this.addContentView(overlay, params);
diff --git a/tests/sketch/src/com/android/gesture/example/GestureEntry.java b/tests/sketch/src/com/android/gesture/example/GestureEntry.java
index 53ba481..200f89f 100644
--- a/tests/sketch/src/com/android/gesture/example/GestureEntry.java
+++ b/tests/sketch/src/com/android/gesture/example/GestureEntry.java
@@ -34,12 +34,11 @@ import android.widget.ArrayAdapter;
 import android.widget.EditText;
 import android.widget.Spinner;
 import android.widget.AdapterView.OnItemSelectedListener;
+import android.gesture.Gesture;
 
-import com.android.gesture.Gesture;
-import com.android.gesture.GestureLibrary;
-import com.android.gesture.GestureListener;
-import com.android.gesture.GestureOverlay;
-import com.android.gesture.Prediction;
+import android.gesture.GestureLibrary;
+import android.gesture.GestureOverlayView;
+import android.gesture.Prediction;
 
 import java.io.File;
 import java.util.ArrayList;
@@ -57,7 +56,7 @@ public class GestureEntry extends Activity {
 
     private static final int VIEW_ID = Menu.FIRST + 1;
 
-    private GestureOverlay mGesturePad;
+    private GestureOverlayView mGesturePad;
 
     private Spinner mRecognitionResult;
 
@@ -96,17 +95,17 @@ public class GestureEntry extends Activity {
         });
 
         // create the area for drawing a gesture
-        mGesturePad = (GestureOverlay) findViewById(R.id.drawingpad);
+        mGesturePad = (GestureOverlayView) findViewById(R.id.drawingpad);
         mGesturePad.setBackgroundColor(Color.BLACK);
-        mGesturePad.addGestureListener(new GestureListener() {
-            public void onFinishGesture(GestureOverlay overlay, MotionEvent event) {
+        mGesturePad.addOnGestureListener(new GestureOverlayView.OnGestureListener() {
+            public void onGestureEnded(GestureOverlayView overlay, MotionEvent event) {
                 recognize(overlay.getCurrentGesture());
             }
 
-            public void onGesture(GestureOverlay overlay, MotionEvent event) {
+            public void onGesture(GestureOverlayView overlay, MotionEvent event) {
             }
 
-            public void onStartGesture(GestureOverlay overlay, MotionEvent event) {
+            public void onGestureStarted(GestureOverlayView overlay, MotionEvent event) {
                 overlay.clear(false);
             }
         });
diff --git a/tests/sketch/src/com/android/gesture/example/GestureLibViewer.java b/tests/sketch/src/com/android/gesture/example/GestureLibViewer.java
index ca54110..aa07e7b 100755
--- a/tests/sketch/src/com/android/gesture/example/GestureLibViewer.java
+++ b/tests/sketch/src/com/android/gesture/example/GestureLibViewer.java
@@ -26,10 +26,10 @@ import android.widget.ArrayAdapter;
 import android.widget.Button;
 import android.widget.Spinner;
 import android.widget.AdapterView.OnItemSelectedListener;
+import android.gesture.Gesture;
 
-import com.android.gesture.Gesture;
-import com.android.gesture.GestureLibrary;
-import com.android.gesture.GestureOverlay;
+import android.gesture.GestureLibrary;
+import android.gesture.GestureOverlayView;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -41,7 +41,7 @@ import java.util.Collections;
 
 public class GestureLibViewer extends Activity {
 
-    private GestureOverlay mGesturePad;
+    private GestureOverlayView mGesturePad;
 
     private Spinner mGestureCategory;
 
@@ -90,7 +90,7 @@ public class GestureLibViewer extends Activity {
         setContentView(R.layout.gestureviewer);
 
         // create the area for drawing a gesture
-        mGesturePad = (GestureOverlay) findViewById(R.id.drawingpad);
+        mGesturePad = (GestureOverlayView) findViewById(R.id.drawingpad);
         mGesturePad.setEnabled(false);
 
         // init the gesture library