Util.java revision 97d089d718dc92c0e9ccc3c923066cf4f0101c35
1101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin/* 2101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * Copyright (C) 2009 The Android Open Source Project 3101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * 4101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * Licensed under the Apache License, Version 2.0 (the "License"); 5101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * you may not use this file except in compliance with the License. 6101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * You may obtain a copy of the License at 7101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * 8101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * http://www.apache.org/licenses/LICENSE-2.0 9101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * 10101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * Unless required by applicable law or agreed to in writing, software 11101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * distributed under the License is distributed on an "AS IS" BASIS, 12101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * See the License for the specific language governing permissions and 14101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * limitations under the License. 15101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin */ 16101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 17937fc48b37fafe3ffc8f4b52bd9a171bbb4d3a37Owen Linpackage com.android.camera; 18101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 193f3c857e3f34650c15d764810335024654b0fcc3Owen Linimport android.app.Activity; 203f3c857e3f34650c15d764810335024654b0fcc3Owen Linimport android.app.AlertDialog; 2110208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Liimport android.content.Context; 223f3c857e3f34650c15d764810335024654b0fcc3Owen Linimport android.content.DialogInterface; 23101d528d59f447847d5c6b7578642132c2b76f4fOwen Linimport android.graphics.Bitmap; 24101d528d59f447847d5c6b7578642132c2b76f4fOwen Linimport android.graphics.BitmapFactory; 25101d528d59f447847d5c6b7578642132c2b76f4fOwen Linimport android.graphics.Matrix; 26c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Liimport android.hardware.Camera; 2710fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Liimport android.hardware.Camera.Parameters; 286227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatraimport android.hardware.Camera.Size; 2910208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Liimport android.telephony.TelephonyManager; 30101d528d59f447847d5c6b7578642132c2b76f4fOwen Linimport android.util.Log; 316227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatraimport android.view.Display; 32ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Changimport android.view.Surface; 33601ce56b034f111b2875e7636776f2f359f6a156Owen Linimport android.view.View; 342c6c6174e2363fccb4e4f29b76290e99234fe140Owen Linimport android.view.animation.Animation; 352c6c6174e2363fccb4e4f29b76290e99234fe140Owen Linimport android.view.animation.TranslateAnimation; 36101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 37101d528d59f447847d5c6b7578642132c2b76f4fOwen Linimport java.io.Closeable; 3810208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Liimport java.lang.reflect.Method; 391efb18228a45952d699af280482e1c51a4582690Owen Linimport java.util.List; 4010fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Liimport java.util.StringTokenizer; 41101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 42101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin/** 43101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin * Collection of utility functions used in this package. 44101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin */ 45101d528d59f447847d5c6b7578642132c2b76f4fOwen Linpublic class Util { 4634fe2a9d33a5b4ce49862ce4558a36c62ba6d540Chih-Chung Chang private static final String TAG = "Util"; 472c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin public static final int DIRECTION_LEFT = 0; 482c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin public static final int DIRECTION_RIGHT = 1; 492c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin public static final int DIRECTION_UP = 2; 502c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin public static final int DIRECTION_DOWN = 3; 51101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 521efb18228a45952d699af280482e1c51a4582690Owen Lin public static final String REVIEW_ACTION = "com.android.camera.action.REVIEW"; 5335688439f40f00a1376dcfab6e6495989d82e433Wei-Ta Chen 54bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau // Private intent extras. Test only. 55bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau public static final String EXTRAS_CAMERA_FACING = 56bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau "android.intent.extras.CAMERA_FACING"; 57bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 58101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin private Util() { 59101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 60101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 61101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin // Rotates the bitmap by the specified degree. 62101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin // If a new bitmap is created, the original bitmap is recycled. 63101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin public static Bitmap rotate(Bitmap b, int degrees) { 649cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li return rotateAndMirror(b, degrees, false); 659cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li } 669cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li 679cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li // Rotates and/or mirrors the bitmap. If a new bitmap is created, the 689cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li // original bitmap is recycled. 699cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li public static Bitmap rotateAndMirror(Bitmap b, int degrees, boolean mirror) { 709cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li if ((degrees != 0 || mirror) && b != null) { 71101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin Matrix m = new Matrix(); 72101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin m.setRotate(degrees, 73101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin (float) b.getWidth() / 2, (float) b.getHeight() / 2); 749cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li if (mirror) { 759cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li m.postScale(-1, 1); 769cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li degrees = (degrees + 360) % 360; 779cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li if (degrees == 0 || degrees == 180) { 789cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li m.postTranslate((float) b.getWidth(), 0); 799cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li } else if (degrees == 90 || degrees == 270) { 809cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li m.postTranslate((float) b.getHeight(), 0); 819cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li } else { 829cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li throw new IllegalArgumentException("Invalid degrees=" + degrees); 839cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li } 849cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li } 859cfab4bc18b8d9d905263c687e19c06df885dca7Wu-cheng Li 86101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin try { 87101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin Bitmap b2 = Bitmap.createBitmap( 88101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin b, 0, 0, b.getWidth(), b.getHeight(), m, true); 89101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin if (b != b2) { 90101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin b.recycle(); 91101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin b = b2; 92101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 93101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } catch (OutOfMemoryError ex) { 94101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin // We have no memory to rotate. Return the original bitmap. 95101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 96101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 97101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin return b; 98101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 99101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 100101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin /* 101ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang * Compute the sample size as a function of minSideLength 102ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang * and maxNumOfPixels. 1033c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * minSideLength is used to specify that minimal width or height of a 1043c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * bitmap. 1053c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * maxNumOfPixels is used to specify the maximal size in pixels that is 1063c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * tolerable in terms of memory usage. 107ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang * 108ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang * The function returns a sample size based on the constraints. 1096bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh * Both size and minSideLength can be passed in as -1 110ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang * which indicates no care of the corresponding constraint. 111ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang * The functions prefers returning a sample size that 1126bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh * generates a smaller bitmap, unless minSideLength = -1. 1133c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * 1143c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * Also, the function rounds up the sample size to a power of 2 or multiple 1153c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * of 8 because BitmapFactory only honors sample size this way. 1163c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * For example, BitmapFactory downsamples an image by 2 even though the 1173c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen * request is 3. So we round up the sample size to avoid OOM. 118101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin */ 119ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang public static int computeSampleSize(BitmapFactory.Options options, 120ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang int minSideLength, int maxNumOfPixels) { 1213c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen int initialSize = computeInitialSampleSize(options, minSideLength, 1223c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen maxNumOfPixels); 1233c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen 1243c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen int roundedSize; 125522e836abc90bcb2d4e7a4ac37e269154d06c715Chih-Chung Chang if (initialSize <= 8) { 1263c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen roundedSize = 1; 1273c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen while (roundedSize < initialSize) { 1283c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen roundedSize <<= 1; 1293c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen } 1303c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen } else { 1313c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen roundedSize = (initialSize + 7) / 8 * 8; 1323c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen } 1333c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen 1343c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen return roundedSize; 1353c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen } 1363c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen 1373c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen private static int computeInitialSampleSize(BitmapFactory.Options options, 1383c21008c953cf6177f7771c176fa81d336e74ed8Wei-Ta Chen int minSideLength, int maxNumOfPixels) { 139ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang double w = options.outWidth; 140ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang double h = options.outHeight; 141ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang 1426bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh int lowerBound = (maxNumOfPixels < 0) ? 1 : 143ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang (int) Math.ceil(Math.sqrt(w * h / maxNumOfPixels)); 1446bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh int upperBound = (minSideLength < 0) ? 128 : 145ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang (int) Math.min(Math.floor(w / minSideLength), 146ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang Math.floor(h / minSideLength)); 147ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang 148f2c7e983fafaf7639a6ad090a93d1892015777edWei-Ta Chen if (upperBound < lowerBound) { 149f2c7e983fafaf7639a6ad090a93d1892015777edWei-Ta Chen // return the larger one when there is no overlapping zone. 150f2c7e983fafaf7639a6ad090a93d1892015777edWei-Ta Chen return lowerBound; 151f2c7e983fafaf7639a6ad090a93d1892015777edWei-Ta Chen } 152f2c7e983fafaf7639a6ad090a93d1892015777edWei-Ta Chen 1536bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh if (maxNumOfPixels < 0 && minSideLength < 0) { 154ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang return 1; 1556bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh } else if (minSideLength < 0) { 156ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang return lowerBound; 157ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang } else { 158ce033a5871a0b678521411f9a3acaee2ab279178Chih-Chung Chang return upperBound; 159101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 160101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin } 161101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin 162cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang public static Bitmap makeBitmap(byte[] jpegData, int maxNumOfPixels) { 163cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang try { 164cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang BitmapFactory.Options options = new BitmapFactory.Options(); 165cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options.inJustDecodeBounds = true; 166cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang BitmapFactory.decodeByteArray(jpegData, 0, jpegData.length, 167cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options); 168cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang if (options.mCancel || options.outWidth == -1 169cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang || options.outHeight == -1) { 170cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang return null; 171cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang } 172cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options.inSampleSize = computeSampleSize( 1736bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh options, -1, maxNumOfPixels); 174cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options.inJustDecodeBounds = false; 175cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang 176cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options.inDither = false; 177cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options.inPreferredConfig = Bitmap.Config.ARGB_8888; 178cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang return BitmapFactory.decodeByteArray(jpegData, 0, jpegData.length, 179cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang options); 180cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang } catch (OutOfMemoryError ex) { 181cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang Log.e(TAG, "Got oom exception ", ex); 182cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang return null; 183cd972b0cd67d7a45084d9757ebd49b8f22989eddChih-Chung Chang } 184c1c20e9ce386c1f660059acaede591d2d718995aChih-Chung Chang } 185c1c20e9ce386c1f660059acaede591d2d718995aChih-Chung Chang 1866bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh public static void closeSilently(Closeable c) { 1876bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh if (c == null) return; 1886bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh try { 1896bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh c.close(); 1906bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh } catch (Throwable t) { 1916bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh // do nothing 1926bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh } 1936bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh } 1946bca5289166b1444f4b98538343a24d35f46dda5Chia-chi Yeh 195341ad98e59d92769e1cc8ba68fa86c72dce0543bChih-Chung Chang public static void Assert(boolean cond) { 196341ad98e59d92769e1cc8ba68fa86c72dce0543bChih-Chung Chang if (!cond) { 197341ad98e59d92769e1cc8ba68fa86c72dce0543bChih-Chung Chang throw new AssertionError(); 198341ad98e59d92769e1cc8ba68fa86c72dce0543bChih-Chung Chang } 199341ad98e59d92769e1cc8ba68fa86c72dce0543bChih-Chung Chang } 200059daa36dc6e83ca24a16d9b99925e71010bccebOwen Lin 2013f3c857e3f34650c15d764810335024654b0fcc3Owen Lin public static void showFatalErrorAndFinish( 2023f3c857e3f34650c15d764810335024654b0fcc3Owen Lin final Activity activity, String title, String message) { 2033f3c857e3f34650c15d764810335024654b0fcc3Owen Lin DialogInterface.OnClickListener buttonListener = 2043f3c857e3f34650c15d764810335024654b0fcc3Owen Lin new DialogInterface.OnClickListener() { 2053f3c857e3f34650c15d764810335024654b0fcc3Owen Lin public void onClick(DialogInterface dialog, int which) { 2063f3c857e3f34650c15d764810335024654b0fcc3Owen Lin activity.finish(); 2073f3c857e3f34650c15d764810335024654b0fcc3Owen Lin } 2083f3c857e3f34650c15d764810335024654b0fcc3Owen Lin }; 2093f3c857e3f34650c15d764810335024654b0fcc3Owen Lin new AlertDialog.Builder(activity) 2103f3c857e3f34650c15d764810335024654b0fcc3Owen Lin .setCancelable(false) 211db0757dc9c627e7c5206104664028e386ade7d03Wu-cheng Li .setIconAttribute(android.R.attr.alertDialogIcon) 2123f3c857e3f34650c15d764810335024654b0fcc3Owen Lin .setTitle(title) 2133f3c857e3f34650c15d764810335024654b0fcc3Owen Lin .setMessage(message) 2143f3c857e3f34650c15d764810335024654b0fcc3Owen Lin .setNeutralButton(R.string.details_ok, buttonListener) 2153f3c857e3f34650c15d764810335024654b0fcc3Owen Lin .show(); 2163f3c857e3f34650c15d764810335024654b0fcc3Owen Lin } 2172c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin 218c1f2e3021bf7b12f2a33561e09bd0ab32530382eOwen Lin public static Animation slideOut(View view, int to) { 2192c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin view.setVisibility(View.INVISIBLE); 2202c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin Animation anim; 2212c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin switch (to) { 2222c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_LEFT: 2232c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(0, -view.getWidth(), 0, 0); 2242c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2252c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_RIGHT: 2262c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(0, view.getWidth(), 0, 0); 2272c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2282c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_UP: 2292c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(0, 0, 0, -view.getHeight()); 2302c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2312c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_DOWN: 2322c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(0, 0, 0, view.getHeight()); 2332c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2342c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin default: 2352c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin throw new IllegalArgumentException(Integer.toString(to)); 2362c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin } 2372c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim.setDuration(500); 2382c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin view.startAnimation(anim); 239c1f2e3021bf7b12f2a33561e09bd0ab32530382eOwen Lin return anim; 2402c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin } 2412c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin 242c1f2e3021bf7b12f2a33561e09bd0ab32530382eOwen Lin public static Animation slideIn(View view, int from) { 2432c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin view.setVisibility(View.VISIBLE); 2442c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin Animation anim; 2452c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin switch (from) { 2462c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_LEFT: 2472c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(-view.getWidth(), 0, 0, 0); 2482c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2492c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_RIGHT: 2502c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(view.getWidth(), 0, 0, 0); 2512c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2522c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_UP: 2532c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(0, 0, -view.getHeight(), 0); 2542c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2552c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin case DIRECTION_DOWN: 2562c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim = new TranslateAnimation(0, 0, view.getHeight(), 0); 2572c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin break; 2582c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin default: 2592c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin throw new IllegalArgumentException(Integer.toString(from)); 2602c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin } 2612c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin anim.setDuration(500); 2622c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin view.startAnimation(anim); 263c1f2e3021bf7b12f2a33561e09bd0ab32530382eOwen Lin return anim; 2642c6c6174e2363fccb4e4f29b76290e99234fe140Owen Lin } 26573e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin 26673e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin public static <T> T checkNotNull(T object) { 26773e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin if (object == null) throw new NullPointerException(); 26873e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin return object; 26973e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin } 27073e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin 27173e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin public static boolean equals(Object a, Object b) { 27273e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin return (a == b) || (a == null ? false : a.equals(b)); 27373e782de608cbe2ddffd75c055009ff2e208f78bOwen Lin } 2744de149ceb47f2c251f646419907424bfb67d2b64Owen Lin 2754de149ceb47f2c251f646419907424bfb67d2b64Owen Lin public static boolean isPowerOf2(int n) { 2764de149ceb47f2c251f646419907424bfb67d2b64Owen Lin return (n & -n) == n; 2774de149ceb47f2c251f646419907424bfb67d2b64Owen Lin } 2784de149ceb47f2c251f646419907424bfb67d2b64Owen Lin 2794de149ceb47f2c251f646419907424bfb67d2b64Owen Lin public static int nextPowerOf2(int n) { 2804de149ceb47f2c251f646419907424bfb67d2b64Owen Lin n -= 1; 2814de149ceb47f2c251f646419907424bfb67d2b64Owen Lin n |= n >>> 16; 2824de149ceb47f2c251f646419907424bfb67d2b64Owen Lin n |= n >>> 8; 2834de149ceb47f2c251f646419907424bfb67d2b64Owen Lin n |= n >>> 4; 2844de149ceb47f2c251f646419907424bfb67d2b64Owen Lin n |= n >>> 2; 2854de149ceb47f2c251f646419907424bfb67d2b64Owen Lin n |= n >>> 1; 2864de149ceb47f2c251f646419907424bfb67d2b64Owen Lin return n + 1; 2874de149ceb47f2c251f646419907424bfb67d2b64Owen Lin } 28833be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin 28933be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin public static float distance(float x, float y, float sx, float sy) { 29033be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin float dx = x - sx; 29133be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin float dy = y - sy; 29233be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin return (float) Math.sqrt(dx * dx + dy * dy); 29333be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin } 29433be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin 29533be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin public static int clamp(int x, int min, int max) { 29633be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin if (x > max) return max; 29733be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin if (x < min) return min; 29833be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin return x; 29933be45a1abaf6a8d611fb87b18945c84ab76c229Owen Lin } 300ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang 3014aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li public static int getDisplayRotation(Activity activity) { 302ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang int rotation = activity.getWindowManager().getDefaultDisplay() 303ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang .getRotation(); 304ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang switch (rotation) { 3054aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li case Surface.ROTATION_0: return 0; 3064aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li case Surface.ROTATION_90: return 90; 3074aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li case Surface.ROTATION_180: return 180; 3084aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li case Surface.ROTATION_270: return 270; 309ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang } 3104aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li return 0; 3114aaa2130af7241f128ee561cafd17a4fb560b92cWu-cheng Li } 312ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang 313855b4ca04f982c7110acd81b509c955df976926fWu-cheng Li public static void setCameraDisplayOrientation(int degrees, 314c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li int cameraId, Camera camera) { 315c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li // See android.hardware.Camera.setCameraDisplayOrientation for 316c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li // documentation. 317c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li Camera.CameraInfo info = new Camera.CameraInfo(); 318c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li Camera.getCameraInfo(cameraId, info); 319c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li int result; 320c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { 321c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li result = (info.orientation + degrees) % 360; 322c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li result = (360 - result) % 360; // compensate the mirror 323c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li } else { // back-facing 324c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li result = (info.orientation - degrees + 360) % 360; 325c1dd72054122befb49aa1ca11ffa589b00186f80Wu-cheng Li } 326ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang camera.setDisplayOrientation(result); 327ac9d0a1ce538eb4bd50cba3b257737a05b9ac4e5Chih-Chung Chang } 3286227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3296227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra public static Size getOptimalPreviewSize(Activity currentActivity, 3306227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra List<Size> sizes, double targetRatio) { 3310fad45d0d64569098f4daf34ff7e5ae785601304Wu-cheng Li // Use a very small tolerance because we want an exact match. 3320fad45d0d64569098f4daf34ff7e5ae785601304Wu-cheng Li final double ASPECT_TOLERANCE = 0.001; 3336227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra if (sizes == null) return null; 3346227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3356227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra Size optimalSize = null; 3366227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra double minDiff = Double.MAX_VALUE; 3376227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3386227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // Because of bugs of overlay and layout, we sometimes will try to 3396227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // layout the viewfinder in the portrait orientation and thus get the 3406227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // wrong size of mSurfaceView. When we change the preview size, the 3416227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // new overlay will be created before the old one closed, which causes 3426227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // an exception. For now, just get the screen size 3436227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3446227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra Display display = currentActivity.getWindowManager().getDefaultDisplay(); 3456227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra int targetHeight = Math.min(display.getHeight(), display.getWidth()); 3466227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3476227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra if (targetHeight <= 0) { 3486227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // We don't know the size of SurfaceView, use screen height 3496227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra targetHeight = display.getHeight(); 3506227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 3516227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3526227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra // Try to find an size match aspect ratio and size 3536227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra for (Size size : sizes) { 3546227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra double ratio = (double) size.width / size.height; 3556227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue; 3566227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra if (Math.abs(size.height - targetHeight) < minDiff) { 3576227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra optimalSize = size; 3586227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra minDiff = Math.abs(size.height - targetHeight); 3596227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 3606227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 3616227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra 3620fad45d0d64569098f4daf34ff7e5ae785601304Wu-cheng Li // Cannot find the one match the aspect ratio. This should not happen. 3630fad45d0d64569098f4daf34ff7e5ae785601304Wu-cheng Li // Ignore the requirement. 3646227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra if (optimalSize == null) { 3650fad45d0d64569098f4daf34ff7e5ae785601304Wu-cheng Li Log.w(TAG, "No preview size match the aspect ratio"); 3666227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra minDiff = Double.MAX_VALUE; 3676227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra for (Size size : sizes) { 3686227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra if (Math.abs(size.height - targetHeight) < minDiff) { 3696227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra optimalSize = size; 3706227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra minDiff = Math.abs(size.height - targetHeight); 3716227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 3726227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 3736227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 3746227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra return optimalSize; 3756227fa641518492a6b660c78463da18d9ec8fcd8Nipun Kwatra } 37610fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li 37710fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li public static void dumpParameters(Parameters parameters) { 37810fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li String flattened = parameters.flatten(); 37910fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li StringTokenizer tokenizer = new StringTokenizer(flattened, ";"); 38010fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li Log.d(TAG, "Dump all camera parameters:"); 38110fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li while (tokenizer.hasMoreElements()) { 38210fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li Log.d(TAG, tokenizer.nextToken()); 38310fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li } 38410fb15e4b1a8cd4acae1a745ada98cf9fac5a809Wu-cheng Li } 38510208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li 38610208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li /** 38710208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li * Returns whether the device is voice-capable (meaning, it can do MMS). 38810208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li */ 38910208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li public static boolean isMmsCapable(Context context) { 39010208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li TelephonyManager telephonyManager = (TelephonyManager) 39110208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li context.getSystemService(Context.TELEPHONY_SERVICE); 39210208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li if (telephonyManager == null) { 39310208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li return false; 39410208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li } 39510208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li 39610208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li try { 39710208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li Class partypes[] = new Class[0]; 39810208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li Method sIsVoiceCapable = TelephonyManager.class.getMethod( 39910208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li "isVoiceCapable", partypes); 40010208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li 40110208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li Object arglist[] = new Object[0]; 40210208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li Object retobj = sIsVoiceCapable.invoke(telephonyManager, arglist); 40310208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li return (Boolean) retobj; 40410208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li } catch (java.lang.reflect.InvocationTargetException ite) { 40510208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li // Failure, must be another device. 40610208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li // Assume that it is voice capable. 407feaf2ccff42c44b74be814b66296f9ddedcc9aa9Wu-cheng Li } catch (IllegalAccessException iae) { 40810208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li // Failure, must be an other device. 40910208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li // Assume that it is voice capable. 41010208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li } catch (NoSuchMethodException nsme) { 41110208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li } 41210208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li return true; 41310208b3b4e2e9ca5af27be49356288531e3cd45bWu-cheng Li } 414bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 415bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau // This is for test only. Allow the camera to launch the specific camera. 416bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau public static int getCameraFacingIntentExtras(Activity currentActivity) { 417bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau int cameraId = -1; 418bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 419bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau int intentCameraId = 420bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau currentActivity.getIntent().getIntExtra(Util.EXTRAS_CAMERA_FACING, -1); 421bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 422bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau if (isFrontCameraIntent(intentCameraId)) { 423bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau // Check if the front camera exist 424bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau int frontCameraId = CameraHolder.instance().getFrontCameraId(); 425bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau if (frontCameraId != -1) { 426bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau cameraId = frontCameraId; 427bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } 428bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } else if (isBackCameraIntent(intentCameraId)) { 429bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau // Check if the back camera exist 430bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau int backCameraId = CameraHolder.instance().getBackCameraId(); 431bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau if (backCameraId != -1) { 432bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau cameraId = backCameraId; 433bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } 434bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } 435bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau return cameraId; 436bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } 437bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 438bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau private static boolean isFrontCameraIntent(int intentCameraId) { 439bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau return (intentCameraId == android.hardware.Camera.CameraInfo.CAMERA_FACING_FRONT); 440bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } 441bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 442bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau private static boolean isBackCameraIntent(int intentCameraId) { 443bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau return (intentCameraId == android.hardware.Camera.CameraInfo.CAMERA_FACING_BACK); 444bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau } 445bbe9db4d12978f220aeb0379731b548420bbd6dbYu Shan Emily Lau 44697d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li private static int mLocation[] = new int[2]; 44797d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li 44897d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li // This method is not thread-safe. 44997d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li public static boolean pointInView(float x, float y, View v) { 45097d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li v.getLocationInWindow(mLocation); 45197d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li return x >= mLocation[0] && x < (mLocation[0] + v.getWidth()) 45297d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li && y >= mLocation[1] && y < (mLocation[1] + v.getHeight()); 45397d089d718dc92c0e9ccc3c923066cf4f0101c35Wu-cheng Li } 454101d528d59f447847d5c6b7578642132c2b76f4fOwen Lin} 455