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The Android Open Source Project31dd5032009-03-03 19:32:27 -08001/*
2 * Copyright (C) 2008 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
Daniel Sandler325dc232013-06-05 22:57:57 -040017package com.android.launcher3;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080018
Sunny Goyalfafca522014-11-03 11:30:01 -080019import android.annotation.TargetApi;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020020import android.app.Activity;
Sunny Goyal1ed6c4a2016-04-21 15:16:11 -070021import android.app.WallpaperManager;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020022import android.content.ActivityNotFoundException;
Sunny Goyalc5c60ad2014-07-14 12:02:01 -070023import android.content.ComponentName;
Winson Chungaafa03c2010-06-11 17:34:16 -070024import android.content.Context;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020025import android.content.Intent;
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -070026import android.content.SharedPreferences;
Sunny Goyalc5c60ad2014-07-14 12:02:01 -070027import android.content.pm.ApplicationInfo;
28import android.content.pm.PackageInfo;
29import android.content.pm.PackageManager;
30import android.content.pm.PackageManager.NameNotFoundException;
31import android.content.pm.ResolveInfo;
Winson Chungaafa03c2010-06-11 17:34:16 -070032import android.content.res.Resources;
Andrew Sappersteinabef55a2016-06-19 12:49:00 -070033import android.content.res.TypedArray;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080034import android.graphics.Bitmap;
Sunny Goyal95abbb32014-08-04 10:53:22 -070035import android.graphics.Color;
Winson Chungc763c4e2013-07-19 13:49:06 -070036import android.graphics.Matrix;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080037import android.graphics.Paint;
38import android.graphics.Rect;
Sandeep Siddhartha2efc7d92014-05-16 17:21:15 -070039import android.os.Build;
Sunny Goyal4e5cc642015-06-25 16:37:44 -070040import android.os.Bundle;
Tony Wickham112ac952015-11-12 12:31:50 -080041import android.os.PowerManager;
Sunny Goyale78e3d72015-09-24 11:23:31 -070042import android.text.Spannable;
43import android.text.SpannableString;
Sunny Goyal5c97f512015-05-19 16:03:28 -070044import android.text.TextUtils;
Sunny Goyale78e3d72015-09-24 11:23:31 -070045import android.text.style.TtsSpan;
Adam Cohen2e6da152015-05-06 11:42:25 -070046import android.util.DisplayMetrics;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020047import android.util.Log;
Sunny Goyal0fe505b2014-08-06 09:55:36 -070048import android.util.Pair;
Sunny Goyal95abbb32014-08-04 10:53:22 -070049import android.util.SparseArray;
Adam Cohen2e6da152015-05-06 11:42:25 -070050import android.util.TypedValue;
Tony Wickham1bce7fd2016-04-28 17:39:03 -070051import android.view.MotionEvent;
Winson Chungc763c4e2013-07-19 13:49:06 -070052import android.view.View;
Sunny Goyal52851aa2016-09-02 10:41:43 -070053import android.view.accessibility.AccessibilityEvent;
54import android.view.accessibility.AccessibilityManager;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020055import android.widget.Toast;
Sunny Goyalb1622cc2015-06-10 16:00:42 -070056
Sunny Goyal713edfc2016-05-06 09:58:34 -070057import com.android.launcher3.config.ProviderConfig;
Sunny Goyal6c56c682015-07-16 14:09:05 -070058
Sunny Goyal5b0e6692015-03-19 14:31:19 -070059import java.io.ByteArrayOutputStream;
Sunny Goyal713edfc2016-05-06 09:58:34 -070060import java.io.Closeable;
Sunny Goyal5b0e6692015-03-19 14:31:19 -070061import java.io.IOException;
Sunny Goyal25aba0a2015-07-16 15:07:47 -070062import java.lang.reflect.Method;
Tony Wickham1bce7fd2016-04-28 17:39:03 -070063import java.util.Collection;
Sunny Goyalb1622cc2015-06-10 16:00:42 -070064import java.util.Locale;
Sunny Goyal4e5cc642015-06-25 16:37:44 -070065import java.util.Set;
Sunny Goyal8ac727b2015-09-23 15:38:09 -070066import java.util.concurrent.Executor;
67import java.util.concurrent.LinkedBlockingQueue;
68import java.util.concurrent.ThreadPoolExecutor;
69import java.util.concurrent.TimeUnit;
Winson Chung82b016c2015-05-08 17:00:10 -070070import java.util.regex.Matcher;
71import java.util.regex.Pattern;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080072
73/**
74 * Various utilities shared amongst the Launcher's classes.
75 */
Mathew Inwood72fbec12013-11-19 15:45:07 +000076public final class Utilities {
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -070077
Joe Onorato1291a8c2009-09-15 15:07:25 -040078 private static final String TAG = "Launcher.Utilities";
79
Winson Chung82b016c2015-05-08 17:00:10 -070080 private static final Pattern sTrimPattern =
81 Pattern.compile("^[\\s|\\p{javaSpaceChar}]*(.*)[\\s|\\p{javaSpaceChar}]*$");
82
Sunny Goyal53d7ee42015-05-22 12:25:45 -070083 private static final int[] sLoc0 = new int[2];
84 private static final int[] sLoc1 = new int[2];
Sunny Goyal5e0e94f2016-10-28 10:01:00 -070085 private static final float[] sPoint = new float[2];
86 private static final Matrix sMatrix = new Matrix();
87 private static final Matrix sInverseMatrix = new Matrix();
Michael Jurka7ad868b2013-12-12 15:04:25 +010088
Sunny Goyal9994b2b2016-06-23 14:17:24 -070089 public static boolean isNycMR1OrAbove() {
Sunny Goyala9206122016-08-15 19:34:37 -070090 return Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1;
Sunny Goyal9994b2b2016-06-23 14:17:24 -070091 }
92
Sunny Goyale2ec8a32016-09-01 11:00:49 -070093 public static boolean isNycOrAbove() {
94 return Build.VERSION.SDK_INT >= Build.VERSION_CODES.N;
95 }
96
Winsonbe9798b2016-07-20 12:55:49 -070097 public static final boolean ATLEAST_MARSHMALLOW =
98 Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
Sunny Goyal9fc953b2015-08-17 12:24:25 -070099
100 public static final boolean ATLEAST_LOLLIPOP_MR1 =
101 Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1;
102
103 public static final boolean ATLEAST_LOLLIPOP =
104 Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
105
106 public static final boolean ATLEAST_KITKAT =
107 Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
108
109 public static final boolean ATLEAST_JB_MR1 =
110 Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
111
112 public static final boolean ATLEAST_JB_MR2 =
113 Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
114
Sunny Goyal6f866092016-03-17 17:04:15 -0700115 // An intent extra to indicate the horizontal scroll of the wallpaper.
116 public static final String EXTRA_WALLPAPER_OFFSET = "com.android.launcher3.WALLPAPER_OFFSET";
117
Sunny Goyal8ac727b2015-09-23 15:38:09 -0700118 // These values are same as that in {@link AsyncTask}.
119 private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();
120 private static final int CORE_POOL_SIZE = CPU_COUNT + 1;
121 private static final int MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;
122 private static final int KEEP_ALIVE = 1;
123 /**
124 * An {@link Executor} to be used with async task with no limit on the queue size.
125 */
126 public static final Executor THREAD_POOL_EXECUTOR = new ThreadPoolExecutor(
127 CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE,
128 TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
129
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -0700130 public static final String ALLOW_ROTATION_PREFERENCE_KEY = "pref_allowRotation";
131
Sunny Goyal4bbf4192014-11-11 12:23:59 -0800132 public static boolean isPropertyEnabled(String propertyName) {
Michael Jurka7ad868b2013-12-12 15:04:25 +0100133 return Log.isLoggable(propertyName, Log.VERBOSE);
134 }
135
Sunny Goyal21bf5312015-08-21 11:08:24 -0700136 public static boolean isAllowRotationPrefEnabled(Context context) {
Sunny Goyalf48e5922016-05-12 15:36:20 -0700137 return getPrefs(context).getBoolean(ALLOW_ROTATION_PREFERENCE_KEY,
138 getAllowRotationDefaultValue(context));
139 }
140
141 public static boolean getAllowRotationDefaultValue(Context context) {
Sunny Goyal8f3819b2016-02-23 14:49:22 -0800142 if (isNycOrAbove()) {
143 // If the device was scaled, used the original dimensions to determine if rotation
144 // is allowed of not.
Sunny Goyale2ec8a32016-09-01 11:00:49 -0700145 Resources res = context.getResources();
146 int originalSmallestWidth = res.getConfiguration().smallestScreenWidthDp
147 * res.getDisplayMetrics().densityDpi / DisplayMetrics.DENSITY_DEVICE_STABLE;
148 return originalSmallestWidth >= 600;
Sunny Goyal8f3819b2016-02-23 14:49:22 -0800149 }
Sunny Goyalf48e5922016-05-12 15:36:20 -0700150 return false;
Michael Jurka7ad868b2013-12-12 15:04:25 +0100151 }
152
The Android Open Source Project31dd5032009-03-03 19:32:27 -0800153 /**
Winson Chungc763c4e2013-07-19 13:49:06 -0700154 * Given a coordinate relative to the descendant, find the coordinate in a parent view's
155 * coordinates.
156 *
157 * @param descendant The descendant to which the passed coordinate is relative.
Sunny Goyale8b5d202016-06-13 16:36:59 -0700158 * @param ancestor The root view to make the coordinates relative to.
Winson Chungc763c4e2013-07-19 13:49:06 -0700159 * @param coord The coordinate that we want mapped.
160 * @param includeRootScroll Whether or not to account for the scroll of the descendant:
161 * sometimes this is relevant as in a child's coordinates within the descendant.
162 * @return The factor by which this descendant is scaled relative to this DragLayer. Caution
163 * this scale factor is assumed to be equal in X and Y, and so if at any point this
164 * assumption fails, we will need to return a pair of scale factors.
165 */
Sunny Goyale8b5d202016-06-13 16:36:59 -0700166 public static float getDescendantCoordRelativeToAncestor(
167 View descendant, View ancestor, int[] coord, boolean includeRootScroll) {
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700168 sPoint[0] = coord[0];
169 sPoint[1] = coord[1];
170
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700171 float scale = 1.0f;
Winson Chungc763c4e2013-07-19 13:49:06 -0700172 View v = descendant;
Sunny Goyale8b5d202016-06-13 16:36:59 -0700173 while(v != ancestor && v != null) {
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700174 // For TextViews, scroll has a meaning which relates to the text position
175 // which is very strange... ignore the scroll.
176 if (v != descendant || includeRootScroll) {
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700177 sPoint[0] -= v.getScrollX();
178 sPoint[1] -= v.getScrollY();
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700179 }
180
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700181 v.getMatrix().mapPoints(sPoint);
182 sPoint[0] += v.getLeft();
183 sPoint[1] += v.getTop();
Sunny Goyal8cf47a52016-06-15 10:11:30 -0700184 scale *= v.getScaleX();
185
Winson Chungc763c4e2013-07-19 13:49:06 -0700186 v = (View) v.getParent();
187 }
Winson Chungc763c4e2013-07-19 13:49:06 -0700188
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700189 coord[0] = Math.round(sPoint[0]);
190 coord[1] = Math.round(sPoint[1]);
Winson Chungc763c4e2013-07-19 13:49:06 -0700191 return scale;
192 }
193
194 /**
Sunny Goyale8b5d202016-06-13 16:36:59 -0700195 * Inverse of {@link #getDescendantCoordRelativeToAncestor(View, View, int[], boolean)}.
Winson Chungc763c4e2013-07-19 13:49:06 -0700196 */
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700197 public static void mapCoordInSelfToDescendant(View descendant, View root, int[] coord) {
198 sMatrix.reset();
Winson Chungc763c4e2013-07-19 13:49:06 -0700199 View v = descendant;
200 while(v != root) {
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700201 sMatrix.postTranslate(-v.getScrollX(), -v.getScrollY());
202 sMatrix.postConcat(v.getMatrix());
203 sMatrix.postTranslate(v.getLeft(), v.getTop());
Winson Chungc763c4e2013-07-19 13:49:06 -0700204 v = (View) v.getParent();
205 }
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700206 sMatrix.postTranslate(-v.getScrollX(), -v.getScrollY());
207 sMatrix.invert(sInverseMatrix);
Winson Chungc763c4e2013-07-19 13:49:06 -0700208
Sunny Goyal5e0e94f2016-10-28 10:01:00 -0700209 sPoint[0] = coord[0];
210 sPoint[1] = coord[1];
211 sInverseMatrix.mapPoints(sPoint);
212 coord[0] = Math.round(sPoint[0]);
213 coord[1] = Math.round(sPoint[1]);
Winson Chungc763c4e2013-07-19 13:49:06 -0700214 }
215
Jason Monk02dd7ae2014-04-15 15:23:31 -0400216 /**
217 * Utility method to determine whether the given point, in local coordinates,
218 * is inside the view, where the area of the view is expanded by the slop factor.
219 * This method is called while processing touch-move events to determine if the event
220 * is still within the view.
221 */
222 public static boolean pointInView(View v, float localX, float localY, float slop) {
223 return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) &&
224 localY < (v.getHeight() + slop);
225 }
226
Tony Wickham1bce7fd2016-04-28 17:39:03 -0700227 /** Translates MotionEvents from src's coordinate system to dst's. */
228 public static void translateEventCoordinates(View src, View dst, MotionEvent dstEvent) {
229 toGlobalMotionEvent(src, dstEvent);
230 toLocalMotionEvent(dst, dstEvent);
231 }
232
233 /**
234 * Emulates View.toGlobalMotionEvent(). This implementation does not handle transformations
235 * (scaleX, scaleY, etc).
236 */
237 private static void toGlobalMotionEvent(View view, MotionEvent event) {
238 view.getLocationOnScreen(sLoc0);
239 event.offsetLocation(sLoc0[0], sLoc0[1]);
240 }
241
242 /**
243 * Emulates View.toLocalMotionEvent(). This implementation does not handle transformations
244 * (scaleX, scaleY, etc).
245 */
246 private static void toLocalMotionEvent(View view, MotionEvent event) {
247 view.getLocationOnScreen(sLoc0);
248 event.offsetLocation(-sLoc0[0], -sLoc0[1]);
249 }
250
Adam Cohen63f1ec02014-08-12 09:23:13 -0700251 public static int[] getCenterDeltaInScreenSpace(View v0, View v1, int[] delta) {
252 v0.getLocationInWindow(sLoc0);
253 v1.getLocationInWindow(sLoc1);
254
255 sLoc0[0] += (v0.getMeasuredWidth() * v0.getScaleX()) / 2;
256 sLoc0[1] += (v0.getMeasuredHeight() * v0.getScaleY()) / 2;
257 sLoc1[0] += (v1.getMeasuredWidth() * v1.getScaleX()) / 2;
258 sLoc1[1] += (v1.getMeasuredHeight() * v1.getScaleY()) / 2;
259
260 if (delta == null) {
261 delta = new int[2];
262 }
263
264 delta[0] = sLoc1[0] - sLoc0[0];
265 delta[1] = sLoc1[1] - sLoc0[1];
266
267 return delta;
268 }
269
Winson Chung3a6e7f32013-10-09 15:50:52 -0700270 public static void scaleRectAboutCenter(Rect r, float scale) {
Sunny Goyal106bf642015-07-16 12:18:06 -0700271 if (scale != 1.0f) {
272 int cx = r.centerX();
273 int cy = r.centerY();
274 r.offset(-cx, -cy);
275
276 r.left = (int) (r.left * scale + 0.5f);
277 r.top = (int) (r.top * scale + 0.5f);
278 r.right = (int) (r.right * scale + 0.5f);
279 r.bottom = (int) (r.bottom * scale + 0.5f);
280
281 r.offset(cx, cy);
282 }
Winson Chung3a6e7f32013-10-09 15:50:52 -0700283 }
284
Michael Jurkaa805e1a2013-08-22 15:00:33 +0200285 public static void startActivityForResultSafely(
286 Activity activity, Intent intent, int requestCode) {
287 try {
288 activity.startActivityForResult(intent, requestCode);
289 } catch (ActivityNotFoundException e) {
290 Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
291 } catch (SecurityException e) {
292 Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
293 Log.e(TAG, "Launcher does not have the permission to launch " + intent +
294 ". Make sure to create a MAIN intent-filter for the corresponding activity " +
295 "or use the exported attribute for this activity.", e);
296 }
297 }
Sunny Goyalc5c60ad2014-07-14 12:02:01 -0700298
299 static boolean isSystemApp(Context context, Intent intent) {
300 PackageManager pm = context.getPackageManager();
301 ComponentName cn = intent.getComponent();
302 String packageName = null;
303 if (cn == null) {
304 ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
305 if ((info != null) && (info.activityInfo != null)) {
306 packageName = info.activityInfo.packageName;
307 }
308 } else {
309 packageName = cn.getPackageName();
310 }
311 if (packageName != null) {
312 try {
313 PackageInfo info = pm.getPackageInfo(packageName, 0);
314 return (info != null) && (info.applicationInfo != null) &&
315 ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
316 } catch (NameNotFoundException e) {
317 return false;
318 }
319 } else {
320 return false;
321 }
322 }
Sunny Goyal95abbb32014-08-04 10:53:22 -0700323
324 /**
325 * This picks a dominant color, looking for high-saturation, high-value, repeated hues.
326 * @param bitmap The bitmap to scan
327 * @param samples The approximate max number of samples to use.
328 */
329 static int findDominantColorByHue(Bitmap bitmap, int samples) {
330 final int height = bitmap.getHeight();
331 final int width = bitmap.getWidth();
332 int sampleStride = (int) Math.sqrt((height * width) / samples);
333 if (sampleStride < 1) {
334 sampleStride = 1;
335 }
336
337 // This is an out-param, for getting the hsv values for an rgb
338 float[] hsv = new float[3];
339
340 // First get the best hue, by creating a histogram over 360 hue buckets,
341 // where each pixel contributes a score weighted by saturation, value, and alpha.
342 float[] hueScoreHistogram = new float[360];
343 float highScore = -1;
344 int bestHue = -1;
345
346 for (int y = 0; y < height; y += sampleStride) {
347 for (int x = 0; x < width; x += sampleStride) {
348 int argb = bitmap.getPixel(x, y);
349 int alpha = 0xFF & (argb >> 24);
350 if (alpha < 0x80) {
351 // Drop mostly-transparent pixels.
352 continue;
353 }
354 // Remove the alpha channel.
355 int rgb = argb | 0xFF000000;
356 Color.colorToHSV(rgb, hsv);
357 // Bucket colors by the 360 integer hues.
358 int hue = (int) hsv[0];
359 if (hue < 0 || hue >= hueScoreHistogram.length) {
360 // Defensively avoid array bounds violations.
361 continue;
362 }
363 float score = hsv[1] * hsv[2];
364 hueScoreHistogram[hue] += score;
365 if (hueScoreHistogram[hue] > highScore) {
366 highScore = hueScoreHistogram[hue];
367 bestHue = hue;
368 }
369 }
370 }
371
372 SparseArray<Float> rgbScores = new SparseArray<Float>();
373 int bestColor = 0xff000000;
374 highScore = -1;
375 // Go back over the RGB colors that match the winning hue,
376 // creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets.
377 // The highest-scoring RGB color wins.
378 for (int y = 0; y < height; y += sampleStride) {
379 for (int x = 0; x < width; x += sampleStride) {
380 int rgb = bitmap.getPixel(x, y) | 0xff000000;
381 Color.colorToHSV(rgb, hsv);
382 int hue = (int) hsv[0];
383 if (hue == bestHue) {
384 float s = hsv[1];
385 float v = hsv[2];
386 int bucket = (int) (s * 100) + (int) (v * 10000);
387 // Score by cumulative saturation * value.
388 float score = s * v;
389 Float oldTotal = rgbScores.get(bucket);
390 float newTotal = oldTotal == null ? score : oldTotal + score;
391 rgbScores.put(bucket, newTotal);
392 if (newTotal > highScore) {
393 highScore = newTotal;
394 // All the colors in the winning bucket are very similar. Last in wins.
395 bestColor = rgb;
396 }
397 }
398 }
399 }
400 return bestColor;
401 }
Sunny Goyal0fe505b2014-08-06 09:55:36 -0700402
403 /*
404 * Finds a system apk which had a broadcast receiver listening to a particular action.
405 * @param action intent action used to find the apk
406 * @return a pair of apk package name and the resources.
407 */
408 static Pair<String, Resources> findSystemApk(String action, PackageManager pm) {
409 final Intent intent = new Intent(action);
410 for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
411 if (info.activityInfo != null &&
412 (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
413 final String packageName = info.activityInfo.packageName;
414 try {
415 final Resources res = pm.getResourcesForApplication(packageName);
416 return Pair.create(packageName, res);
417 } catch (NameNotFoundException e) {
418 Log.w(TAG, "Failed to find resources for " + packageName);
419 }
420 }
421 }
422 return null;
423 }
Sunny Goyalfafca522014-11-03 11:30:01 -0800424
Sunny Goyal594d76d2014-11-06 10:12:54 -0800425 /**
Sunny Goyal5b0e6692015-03-19 14:31:19 -0700426 * Compresses the bitmap to a byte array for serialization.
427 */
428 public static byte[] flattenBitmap(Bitmap bitmap) {
429 // Try go guesstimate how much space the icon will take when serialized
430 // to avoid unnecessary allocations/copies during the write.
431 int size = bitmap.getWidth() * bitmap.getHeight() * 4;
432 ByteArrayOutputStream out = new ByteArrayOutputStream(size);
433 try {
434 bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
435 out.flush();
436 out.close();
437 return out.toByteArray();
438 } catch (IOException e) {
439 Log.w(TAG, "Could not write bitmap");
440 return null;
441 }
442 }
443
Sunny Goyalf7a29e82015-04-24 15:20:43 -0700444 /**
Winson Chung82b016c2015-05-08 17:00:10 -0700445 * Trims the string, removing all whitespace at the beginning and end of the string.
446 * Non-breaking whitespaces are also removed.
447 */
448 public static String trim(CharSequence s) {
Winson Chungafa77e92015-05-15 12:04:03 -0700449 if (s == null) {
450 return null;
451 }
452
Winson Chung82b016c2015-05-08 17:00:10 -0700453 // Just strip any sequence of whitespace or java space characters from the beginning and end
454 Matcher m = sTrimPattern.matcher(s);
455 return m.replaceAll("$1");
456 }
Sunny Goyal70660032015-05-14 00:07:08 -0700457
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700458 /**
459 * Calculates the height of a given string at a specific text size.
460 */
Sunny Goyalbaec6ff2016-09-14 11:26:21 -0700461 public static int calculateTextHeight(float textSizePx) {
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700462 Paint p = new Paint();
463 p.setTextSize(textSizePx);
464 Paint.FontMetrics fm = p.getFontMetrics();
Sunny Goyalbaec6ff2016-09-14 11:26:21 -0700465 return (int) Math.ceil(fm.bottom - fm.top);
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700466 }
467
Winson Chungb1777442015-06-16 13:35:04 -0700468 /**
469 * Convenience println with multiple args.
470 */
471 public static void println(String key, Object... args) {
472 StringBuilder b = new StringBuilder();
473 b.append(key);
474 b.append(": ");
475 boolean isFirstArgument = true;
476 for (Object arg : args) {
477 if (isFirstArgument) {
478 isFirstArgument = false;
479 } else {
480 b.append(", ");
481 }
482 b.append(arg);
483 }
484 System.out.println(b.toString());
485 }
486
Sunny Goyal70660032015-05-14 00:07:08 -0700487 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
488 public static boolean isRtl(Resources res) {
Sunny Goyal9fc953b2015-08-17 12:24:25 -0700489 return ATLEAST_JB_MR1 &&
Sunny Goyal70660032015-05-14 00:07:08 -0700490 (res.getConfiguration().getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
491 }
Hyunyoung Song2bd3d7d2015-05-21 13:04:53 -0700492
Sunny Goyal5c97f512015-05-19 16:03:28 -0700493 /**
494 * Returns true if the intent is a valid launch intent for a launcher activity of an app.
495 * This is used to identify shortcuts which are different from the ones exposed by the
496 * applications' manifest file.
497 *
498 * @param launchIntent The intent that will be launched when the shortcut is clicked.
499 */
500 public static boolean isLauncherAppTarget(Intent launchIntent) {
Sunny Goyal4e5cc642015-06-25 16:37:44 -0700501 if (launchIntent != null
Sunny Goyal5c97f512015-05-19 16:03:28 -0700502 && Intent.ACTION_MAIN.equals(launchIntent.getAction())
503 && launchIntent.getComponent() != null
504 && launchIntent.getCategories() != null
505 && launchIntent.getCategories().size() == 1
506 && launchIntent.hasCategory(Intent.CATEGORY_LAUNCHER)
Sunny Goyal4e5cc642015-06-25 16:37:44 -0700507 && TextUtils.isEmpty(launchIntent.getDataString())) {
508 // An app target can either have no extra or have ItemInfo.EXTRA_PROFILE.
509 Bundle extras = launchIntent.getExtras();
510 if (extras == null) {
511 return true;
512 } else {
513 Set<String> keys = extras.keySet();
514 return keys.size() == 1 && keys.contains(ItemInfo.EXTRA_PROFILE);
515 }
516 };
517 return false;
Sunny Goyal5c97f512015-05-19 16:03:28 -0700518 }
Adam Cohen2e6da152015-05-06 11:42:25 -0700519
520 public static float dpiFromPx(int size, DisplayMetrics metrics){
521 float densityRatio = (float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT;
522 return (size / densityRatio);
523 }
524 public static int pxFromDp(float size, DisplayMetrics metrics) {
525 return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
526 size, metrics));
527 }
528 public static int pxFromSp(float size, DisplayMetrics metrics) {
529 return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
530 size, metrics));
531 }
Sunny Goyalb1622cc2015-06-10 16:00:42 -0700532
533 public static String createDbSelectionQuery(String columnName, Iterable<?> values) {
534 return String.format(Locale.ENGLISH, "%s IN (%s)", columnName, TextUtils.join(", ", values));
535 }
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700536
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700537 public static boolean isBootCompleted() {
Sunny Goyaldfc8b662016-08-30 12:05:48 -0700538 return "1".equals(getSystemProperty("sys.boot_completed", "1"));
539 }
540
541 public static String getSystemProperty(String property, String defaultValue) {
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700542 try {
543 Class clazz = Class.forName("android.os.SystemProperties");
544 Method getter = clazz.getDeclaredMethod("get", String.class);
Sunny Goyaldfc8b662016-08-30 12:05:48 -0700545 String value = (String) getter.invoke(null, property);
546 if (!TextUtils.isEmpty(value)) {
547 return value;
548 }
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700549 } catch (Exception e) {
550 Log.d(TAG, "Unable to read system properties");
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700551 }
Sunny Goyaldfc8b662016-08-30 12:05:48 -0700552 return defaultValue;
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700553 }
Tony Wickham29d853c2015-09-08 10:35:56 -0700554
555 /**
556 * Ensures that a value is within given bounds. Specifically:
557 * If value is less than lowerBound, return lowerBound; else if value is greater than upperBound,
558 * return upperBound; else return value unchanged.
559 */
Tony Wickhamf549dab2016-05-16 09:54:06 -0700560 public static int boundToRange(int value, int lowerBound, int upperBound) {
561 return Math.max(lowerBound, Math.min(value, upperBound));
562 }
563
564 /**
565 * @see #boundToRange(int, int, int).
566 */
567 public static float boundToRange(float value, float lowerBound, float upperBound) {
Tony Wickham29d853c2015-09-08 10:35:56 -0700568 return Math.max(lowerBound, Math.min(value, upperBound));
569 }
Sunny Goyal9d438082015-09-25 11:50:16 -0700570
Sunny Goyale78e3d72015-09-24 11:23:31 -0700571 /**
572 * Wraps a message with a TTS span, so that a different message is spoken than
573 * what is getting displayed.
574 * @param msg original message
575 * @param ttsMsg message to be spoken
576 */
577 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
578 public static CharSequence wrapForTts(CharSequence msg, String ttsMsg) {
579 if (Utilities.ATLEAST_LOLLIPOP) {
580 SpannableString spanned = new SpannableString(msg);
581 spanned.setSpan(new TtsSpan.TextBuilder(ttsMsg).build(),
582 0, spanned.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
583 return spanned;
584 } else {
585 return msg;
586 }
587 }
Winson12fb9fc2015-10-01 15:34:08 -0700588
589 /**
590 * Replacement for Long.compare() which was added in API level 19.
591 */
592 public static int longCompare(long lhs, long rhs) {
593 return lhs < rhs ? -1 : (lhs == rhs ? 0 : 1);
594 }
Sunny Goyalf7258242015-10-19 16:59:07 -0700595
596 public static SharedPreferences getPrefs(Context context) {
597 return context.getSharedPreferences(
598 LauncherFiles.SHARED_PREFERENCES_KEY, Context.MODE_PRIVATE);
599 }
Tony Wickham112ac952015-11-12 12:31:50 -0800600
601 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
602 public static boolean isPowerSaverOn(Context context) {
603 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
604 return ATLEAST_LOLLIPOP && powerManager.isPowerSaveMode();
605 }
Sunny Goyale1483fb2016-01-08 12:16:15 -0800606
Hyunyoung Song0de01172016-10-05 16:27:48 -0700607 public static boolean isWallpaperAllowed(Context context) {
Sunny Goyal1ed6c4a2016-04-21 15:16:11 -0700608 if (isNycOrAbove()) {
609 try {
610 WallpaperManager wm = context.getSystemService(WallpaperManager.class);
Kenny Guy367da9f2016-05-25 19:22:14 +0100611 return (Boolean) wm.getClass().getDeclaredMethod("isSetWallpaperAllowed")
Sunny Goyal1ed6c4a2016-04-21 15:16:11 -0700612 .invoke(wm);
613 } catch (Exception e) { }
614 }
615 return true;
616 }
617
Sunny Goyal713edfc2016-05-06 09:58:34 -0700618 public static void closeSilently(Closeable c) {
619 if (c != null) {
620 try {
621 c.close();
622 } catch (IOException e) {
623 if (ProviderConfig.IS_DOGFOOD_BUILD) {
624 Log.d(TAG, "Error closing", e);
625 }
626 }
627 }
628 }
629
Sunny Goyale1483fb2016-01-08 12:16:15 -0800630 /**
Sunny Goyal3f732192016-05-13 13:48:44 -0700631 * Returns true if {@param original} contains all entries defined in {@param updates} and
632 * have the same value.
633 * The comparison uses {@link Object#equals(Object)} to compare the values.
634 */
635 public static boolean containsAll(Bundle original, Bundle updates) {
636 for (String key : updates.keySet()) {
637 Object value1 = updates.get(key);
638 Object value2 = original.get(key);
639 if (value1 == null) {
640 if (value2 != null) {
641 return false;
642 }
643 } else if (!value1.equals(value2)) {
644 return false;
645 }
646 }
647 return true;
648 }
649
Tony Wickham1bce7fd2016-04-28 17:39:03 -0700650 /** Returns whether the collection is null or empty. */
651 public static boolean isEmpty(Collection c) {
652 return c == null || c.isEmpty();
653 }
654
Andrew Sappersteinabef55a2016-06-19 12:49:00 -0700655 public static int getColorAccent(Context context) {
656 TypedArray ta = context.obtainStyledAttributes(new int[]{android.R.attr.colorAccent});
657 int colorAccent = ta.getColor(0, 0);
658 ta.recycle();
659 return colorAccent;
660 }
Sunny Goyal52851aa2016-09-02 10:41:43 -0700661
662 public static void sendCustomAccessibilityEvent(View target, int type, String text) {
663 AccessibilityManager accessibilityManager = (AccessibilityManager)
664 target.getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
665 if (accessibilityManager.isEnabled()) {
666 AccessibilityEvent event = AccessibilityEvent.obtain(type);
667 target.onInitializeAccessibilityEvent(event);
668 event.getText().add(text);
669 accessibilityManager.sendAccessibilityEvent(event);
670 }
671 }
The Android Open Source Project31dd5032009-03-03 19:32:27 -0800672}