The Tor Browser: mobile/android/base/tests/MotionEventReplayer.java@fc2d59ddac77 (annotated)

mobile/android/base/tests/MotionEventReplayer.java@fc2d59ddac77 (annotated)

mobile/android/base/tests/MotionEventReplayer.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 package org.mozilla.gecko.tests;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.StringTokenizer;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import android.app.Instrumentation;
 import android.os.Build;
 import android.os.SystemClock;
 import android.util.Log;
 import android.view.MotionEvent;
 class MotionEventReplayer {
     private static final String LOGTAG = "RobocopMotionEventReplayer";
     // the inner dimensions of the window on which the motion event capture was taken from
     private static final int CAPTURE_WINDOW_WIDTH = 720;
     private static final int CAPTURE_WINDOW_HEIGHT = 1038;
     private final Instrumentation mInstrumentation;
     private final int mSurfaceOffsetX;
     private final int mSurfaceOffsetY;
     private final int mSurfaceWidth;
     private final int mSurfaceHeight;
     private final Map<String, Integer> mActionTypes;
     private Method mObtainNanoMethod;
     public MotionEventReplayer(Instrumentation inst, int surfaceOffsetX, int surfaceOffsetY, int surfaceWidth, int surfaceHeight) {
         mInstrumentation = inst;
         mSurfaceOffsetX = surfaceOffsetX;
         mSurfaceOffsetY = surfaceOffsetY;
         mSurfaceWidth = surfaceWidth;
         mSurfaceHeight = surfaceHeight;
         Log.i(LOGTAG, "Initialized using offset (" + mSurfaceOffsetX + "," + mSurfaceOffsetY + ")");
         mActionTypes = new HashMap<String, Integer>();
         mActionTypes.put("ACTION_CANCEL", MotionEvent.ACTION_CANCEL);
         mActionTypes.put("ACTION_DOWN", MotionEvent.ACTION_DOWN);
         mActionTypes.put("ACTION_MOVE", MotionEvent.ACTION_MOVE);
         mActionTypes.put("ACTION_POINTER_DOWN", MotionEvent.ACTION_POINTER_DOWN);
         mActionTypes.put("ACTION_POINTER_UP", MotionEvent.ACTION_POINTER_UP);
         mActionTypes.put("ACTION_UP", MotionEvent.ACTION_UP);
     }
     private int parseAction(String action) {
         int index = 0;
         // ACTION_POINTER_DOWN and ACTION_POINTER_UP might be followed by
         // pointer index in parentheses, like ACTION_POINTER_UP(1)
         int beginParen = action.indexOf("(");
         if (beginParen >= 0) {
             int endParen = action.indexOf(")", beginParen + 1);
             index = Integer.parseInt(action.substring(beginParen + 1, endParen));
             action = action.substring(0, beginParen);
         }
         return mActionTypes.get(action) | (index << MotionEvent.ACTION_POINTER_INDEX_SHIFT);
     }
     private int parseInt(String value) {
         if (value == null) {
             return 0;
         }
         if (value.startsWith("0x")) {
             return Integer.parseInt(value.substring(2), 16);
         }
         return Integer.parseInt(value);
     }
     private float scaleX(float value) {
         return value * (float)mSurfaceWidth / (float)CAPTURE_WINDOW_WIDTH;
     }
     private float scaleY(float value) {
         return value * (float)mSurfaceHeight / (float)CAPTURE_WINDOW_HEIGHT;
     }
     public void replayEvents(InputStream eventDescriptions)
             throws IOException, IllegalAccessException, InvocationTargetException, NoSuchMethodException
     {
         // As an example, a line in the input stream might look like:
         //
         // MotionEvent { action=ACTION_DOWN, id[0]=0, x[0]=424.41055, y[0]=825.2412,
         //      toolType[0]=TOOL_TYPE_FINGER, buttonState=0, metaState=0, flags=0x0,
         //      edgeFlags=0x0, pointerCount=1, historySize=0, eventTime=21972329,
         //      downTime=21972329, deviceId=6, source=0x1002 }
         //
         // These can be generated by printing out event.toString() in LayerView's
         // onTouchEvent function on a phone running Ice Cream Sandwich. Different
         // Android versions have different serializations of the motion event, and this
         // code could probably be modified to parse other serializations if needed.
         Pattern p = Pattern.compile("MotionEvent \\{ (.*?) \\}");
         Map<String, String> eventProperties = new HashMap<String, String>();
         boolean firstEvent = true;
         long timeDelta = 0L;
         long lastEventTime = 0L;
         BufferedReader br = new BufferedReader(new InputStreamReader(eventDescriptions));
         try {
             for (String eventStr = br.readLine(); eventStr != null; eventStr = br.readLine()) {
                 Matcher m = p.matcher(eventStr);
                 if (! m.find()) {
                     // this line doesn't have any MotionEvent data, skip it
                     continue;
                 }
                 // extract the key-value pairs from the description and store them
                 // in the eventProperties table
                 StringTokenizer keyValues = new StringTokenizer(m.group(1), ",");
                 while (keyValues.hasMoreTokens()) {
                     String keyValue = keyValues.nextToken();
                     String key = keyValue.substring(0, keyValue.indexOf('=')).trim();
                     String value = keyValue.substring(keyValue.indexOf('=') + 1).trim();
                     eventProperties.put(key, value);
                 }
                 // set up the values we need to build the MotionEvent
                 long downTime = Long.parseLong(eventProperties.get("downTime"));
                 long eventTime = Long.parseLong(eventProperties.get("eventTime"));
                 int action = parseAction(eventProperties.get("action"));
                 float pressure = 1.0f;
                 float size = 1.0f;
                 int metaState = parseInt(eventProperties.get("metaState"));
                 float xPrecision = 1.0f;
                 float yPrecision = 1.0f;
                 int deviceId = 0;
                 int edgeFlags = parseInt(eventProperties.get("edgeFlags"));
                 int source = parseInt(eventProperties.get("source"));
                 int flags = parseInt(eventProperties.get("flags"));
                 int pointerCount = parseInt(eventProperties.get("pointerCount"));
                 int[] pointerIds = new int[pointerCount];
                 Object pointerData;
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
                     MotionEvent.PointerCoords[] pointerCoords = new MotionEvent.PointerCoords[pointerCount];
                     for (int i = 0; i < pointerCount; i++) {
                         pointerIds[i] = Integer.parseInt(eventProperties.get("id[" + i + "]"));
                         pointerCoords[i] = new MotionEvent.PointerCoords();
                         pointerCoords[i].x = mSurfaceOffsetX + scaleX(Float.parseFloat(eventProperties.get("x[" + i + "]")));
                         pointerCoords[i].y = mSurfaceOffsetY + scaleY(Float.parseFloat(eventProperties.get("y[" + i + "]")));
                     }
                     pointerData = pointerCoords;
                 } else {
                     // pre-gingerbread we have to use a hidden API to create the motion event, and we have
                     // to create a flattened list of floats rather than an array of PointerCoords
                     final int NUM_SAMPLE_DATA = 4; // MotionEvent.NUM_SAMPLE_DATA
                     final int SAMPLE_X = 0; // MotionEvent.SAMPLE_X
                     final int SAMPLE_Y = 1; // MotionEvent.SAMPLE_Y
                     float[] sampleData = new float[pointerCount * NUM_SAMPLE_DATA];
                     for (int i = 0; i < pointerCount; i++) {
                         pointerIds[i] = Integer.parseInt(eventProperties.get("id[" + i + "]"));
                         sampleData[(i * NUM_SAMPLE_DATA) + SAMPLE_X] =
                                 mSurfaceOffsetX + scaleX(Float.parseFloat(eventProperties.get("x[" + i + "]")));
                         sampleData[(i * NUM_SAMPLE_DATA) + SAMPLE_Y] =
                                 mSurfaceOffsetY + scaleY(Float.parseFloat(eventProperties.get("y[" + i + "]")));
                     }
                     pointerData = sampleData;
                 }
                 // we want to adjust the timestamps on all the generated events so that they line up with
                 // the time that this function is executing on-device.
                 long now = SystemClock.uptimeMillis();
                 if (firstEvent) {
                     timeDelta = now - eventTime;
                     firstEvent = false;
                 }
                 downTime += timeDelta;
                 eventTime += timeDelta;
                 // we also generate the events in "real-time" (i.e. have delays between events that
                 // correspond to the delays in the event timestamps).
                 if (now < eventTime) {
                     try {
                         Thread.sleep(eventTime - now);
                     } catch (InterruptedException ie) {
                     }
                 }
                 // and finally we dispatch the event
                 MotionEvent event;
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
                     event = MotionEvent.obtain(downTime, eventTime, action, pointerCount,
                             pointerIds, (MotionEvent.PointerCoords[])pointerData, metaState,
                             xPrecision, yPrecision, deviceId, edgeFlags, source, flags);
                 } else {
                     // pre-gingerbread we have to use a hidden API to accomplish this
                     if (mObtainNanoMethod == null) {
                         mObtainNanoMethod = MotionEvent.class.getMethod("obtainNano", long.class,
                             long.class, long.class, int.class, int.class, pointerIds.getClass(),
                             pointerData.getClass(), int.class, float.class, float.class,
                             int.class, int.class);
                     }
                     event = (MotionEvent)mObtainNanoMethod.invoke(null, downTime, eventTime,
                             eventTime * 1000000, action, pointerCount, pointerIds, (float[])pointerData,
                             metaState, xPrecision, yPrecision, deviceId, edgeFlags);
                 }
                 try {
                     Log.v(LOGTAG, "Injecting " + event.toString());
                     mInstrumentation.sendPointerSync(event);
                 } finally {
                     event.recycle();
                     event = null;
                 }
                 eventProperties.clear();
             }
         } finally {
             br.close();
         }
     }
 }

The Tor Browser / annotate

mobile/android/base/tests/MotionEventReplayer.java@fc2d59ddac77 (annotated)

mobile/android/base/tests/MotionEventReplayer.java