1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gesture.builder; 18 19 import android.app.Activity; 20 import android.os.Bundle; 21 import android.os.Environment; 22 import android.view.View; 23 import android.view.MotionEvent; 24 import android.gesture.GestureOverlayView; 25 import android.gesture.Gesture; 26 import android.gesture.GestureLibrary; 27 import android.widget.TextView; 28 import android.widget.Toast; 29 30 import java.io.File; 31 32 public class CreateGestureActivity extends Activity { 33 private static final float LENGTH_THRESHOLD = 120.0f; 34 35 private Gesture mGesture; 36 private View mDoneButton; 37 38 @Override onCreate(Bundle savedInstanceState)39 protected void onCreate(Bundle savedInstanceState) { 40 super.onCreate(savedInstanceState); 41 42 setContentView(R.layout.create_gesture); 43 44 mDoneButton = findViewById(R.id.done); 45 46 GestureOverlayView overlay = (GestureOverlayView) findViewById(R.id.gestures_overlay); 47 overlay.addOnGestureListener(new GesturesProcessor()); 48 } 49 50 @Override onSaveInstanceState(Bundle outState)51 protected void onSaveInstanceState(Bundle outState) { 52 super.onSaveInstanceState(outState); 53 54 if (mGesture != null) { 55 outState.putParcelable("gesture", mGesture); 56 } 57 } 58 59 @Override onRestoreInstanceState(Bundle savedInstanceState)60 protected void onRestoreInstanceState(Bundle savedInstanceState) { 61 super.onRestoreInstanceState(savedInstanceState); 62 63 mGesture = savedInstanceState.getParcelable("gesture"); 64 if (mGesture != null) { 65 final GestureOverlayView overlay = 66 (GestureOverlayView) findViewById(R.id.gestures_overlay); 67 overlay.post(new Runnable() { 68 public void run() { 69 overlay.setGesture(mGesture); 70 } 71 }); 72 73 mDoneButton.setEnabled(true); 74 } 75 } 76 77 @SuppressWarnings({"UnusedDeclaration"}) addGesture(View v)78 public void addGesture(View v) { 79 if (mGesture != null) { 80 final TextView input = (TextView) findViewById(R.id.gesture_name); 81 final CharSequence name = input.getText(); 82 if (name.length() == 0) { 83 input.setError(getString(R.string.error_missing_name)); 84 return; 85 } 86 87 final GestureLibrary store = GestureBuilderActivity.getStore(); 88 store.addGesture(name.toString(), mGesture); 89 store.save(); 90 91 setResult(RESULT_OK); 92 93 final String path = new File(Environment.getExternalStorageDirectory(), 94 "gestures").getAbsolutePath(); 95 Toast.makeText(this, getString(R.string.save_success, path), Toast.LENGTH_LONG).show(); 96 } else { 97 setResult(RESULT_CANCELED); 98 } 99 100 finish(); 101 102 } 103 104 @SuppressWarnings({"UnusedDeclaration"}) cancelGesture(View v)105 public void cancelGesture(View v) { 106 setResult(RESULT_CANCELED); 107 finish(); 108 } 109 110 private class GesturesProcessor implements GestureOverlayView.OnGestureListener { onGestureStarted(GestureOverlayView overlay, MotionEvent event)111 public void onGestureStarted(GestureOverlayView overlay, MotionEvent event) { 112 mDoneButton.setEnabled(false); 113 mGesture = null; 114 } 115 onGesture(GestureOverlayView overlay, MotionEvent event)116 public void onGesture(GestureOverlayView overlay, MotionEvent event) { 117 } 118 onGestureEnded(GestureOverlayView overlay, MotionEvent event)119 public void onGestureEnded(GestureOverlayView overlay, MotionEvent event) { 120 mGesture = overlay.getGesture(); 121 if (mGesture.getLength() < LENGTH_THRESHOLD) { 122 overlay.clear(false); 123 } 124 mDoneButton.setEnabled(true); 125 } 126 onGestureCancelled(GestureOverlayView overlay, MotionEvent event)127 public void onGestureCancelled(GestureOverlayView overlay, MotionEvent event) { 128 } 129 } 130 } 131