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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 Goyal594d76d2014-11-06 10:12:54 -080021import android.app.SearchManager;
22import android.appwidget.AppWidgetManager;
23import android.appwidget.AppWidgetProviderInfo;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020024import android.content.ActivityNotFoundException;
Sunny Goyalc5c60ad2014-07-14 12:02:01 -070025import android.content.ComponentName;
Winson Chungaafa03c2010-06-11 17:34:16 -070026import android.content.Context;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020027import android.content.Intent;
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -070028import android.content.SharedPreferences;
Sunny Goyalc5c60ad2014-07-14 12:02:01 -070029import android.content.pm.ApplicationInfo;
30import android.content.pm.PackageInfo;
31import android.content.pm.PackageManager;
32import android.content.pm.PackageManager.NameNotFoundException;
33import android.content.pm.ResolveInfo;
Winson Chungaafa03c2010-06-11 17:34:16 -070034import android.content.res.Resources;
Sunny Goyal4fbc3822015-02-18 16:46:50 -080035import android.database.Cursor;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080036import android.graphics.Bitmap;
Sunny Goyal4fbc3822015-02-18 16:46:50 -080037import android.graphics.BitmapFactory;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080038import android.graphics.Canvas;
Sunny Goyal95abbb32014-08-04 10:53:22 -070039import android.graphics.Color;
Winson Chungc763c4e2013-07-19 13:49:06 -070040import android.graphics.Matrix;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080041import android.graphics.Paint;
Joe Onoratobf15cb42009-08-07 14:33:40 -070042import android.graphics.PaintFlagsDrawFilter;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080043import android.graphics.Rect;
Winson Chungaafa03c2010-06-11 17:34:16 -070044import android.graphics.drawable.BitmapDrawable;
45import android.graphics.drawable.Drawable;
46import android.graphics.drawable.PaintDrawable;
Sandeep Siddhartha2efc7d92014-05-16 17:21:15 -070047import android.os.Build;
Sunny Goyal4e5cc642015-06-25 16:37:44 -070048import android.os.Bundle;
Tony Wickham112ac952015-11-12 12:31:50 -080049import android.os.PowerManager;
Hyunyoung Song2bd3d7d2015-05-21 13:04:53 -070050import android.os.Process;
Sunny Goyale78e3d72015-09-24 11:23:31 -070051import android.text.Spannable;
52import android.text.SpannableString;
Sunny Goyal5c97f512015-05-19 16:03:28 -070053import android.text.TextUtils;
Sunny Goyale78e3d72015-09-24 11:23:31 -070054import android.text.style.TtsSpan;
Adam Cohen2e6da152015-05-06 11:42:25 -070055import android.util.DisplayMetrics;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020056import android.util.Log;
Sunny Goyal0fe505b2014-08-06 09:55:36 -070057import android.util.Pair;
Sunny Goyal95abbb32014-08-04 10:53:22 -070058import android.util.SparseArray;
Adam Cohen2e6da152015-05-06 11:42:25 -070059import android.util.TypedValue;
Winson Chungc763c4e2013-07-19 13:49:06 -070060import android.view.View;
Michael Jurkaa805e1a2013-08-22 15:00:33 +020061import android.widget.Toast;
Sunny Goyalb1622cc2015-06-10 16:00:42 -070062
Sunny Goyalb84046d2015-10-19 14:03:30 -070063import com.android.launcher3.compat.UserHandleCompat;
Sunny Goyald896ee42015-12-17 11:24:31 -080064import com.android.launcher3.config.FeatureFlags;
Sunny Goyal6c56c682015-07-16 14:09:05 -070065import com.android.launcher3.config.ProviderConfig;
Sunny Goyalfc218302015-09-17 14:59:10 -070066import com.android.launcher3.util.IconNormalizer;
Sunny Goyal6c56c682015-07-16 14:09:05 -070067
Sunny Goyal5b0e6692015-03-19 14:31:19 -070068import java.io.ByteArrayOutputStream;
69import java.io.IOException;
Sunny Goyal25aba0a2015-07-16 15:07:47 -070070import java.lang.reflect.Method;
Winson Chungc763c4e2013-07-19 13:49:06 -070071import java.util.ArrayList;
Sunny Goyalb1622cc2015-06-10 16:00:42 -070072import java.util.Locale;
Sunny Goyal4e5cc642015-06-25 16:37:44 -070073import java.util.Set;
Sunny Goyal8ac727b2015-09-23 15:38:09 -070074import java.util.concurrent.Executor;
75import java.util.concurrent.LinkedBlockingQueue;
76import java.util.concurrent.ThreadPoolExecutor;
77import java.util.concurrent.TimeUnit;
Winson Chung82b016c2015-05-08 17:00:10 -070078import java.util.regex.Matcher;
79import java.util.regex.Pattern;
The Android Open Source Project31dd5032009-03-03 19:32:27 -080080
81/**
82 * Various utilities shared amongst the Launcher's classes.
83 */
Mathew Inwood72fbec12013-11-19 15:45:07 +000084public final class Utilities {
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -070085
Joe Onorato1291a8c2009-09-15 15:07:25 -040086 private static final String TAG = "Launcher.Utilities";
87
The Android Open Source Project31dd5032009-03-03 19:32:27 -080088 private static final Rect sOldBounds = new Rect();
Romain Guy89911d22009-09-28 18:48:49 -070089 private static final Canvas sCanvas = new Canvas();
The Android Open Source Project31dd5032009-03-03 19:32:27 -080090
Winson Chung82b016c2015-05-08 17:00:10 -070091 private static final Pattern sTrimPattern =
92 Pattern.compile("^[\\s|\\p{javaSpaceChar}]*(.*)[\\s|\\p{javaSpaceChar}]*$");
93
The Android Open Source Project31dd5032009-03-03 19:32:27 -080094 static {
95 sCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
96 Paint.FILTER_BITMAP_FLAG));
97 }
Joe Onorato6665c0f2009-09-02 15:27:24 -070098 static int sColors[] = { 0xffff0000, 0xff00ff00, 0xff0000ff };
99 static int sColorIndex = 0;
100
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700101 private static final int[] sLoc0 = new int[2];
102 private static final int[] sLoc1 = new int[2];
Michael Jurka7ad868b2013-12-12 15:04:25 +0100103
Sunny Goyal9fc953b2015-08-17 12:24:25 -0700104 // TODO: use Build.VERSION_CODES when available
105 public static final boolean ATLEAST_MARSHMALLOW = Build.VERSION.SDK_INT >= 23;
106
107 public static final boolean ATLEAST_LOLLIPOP_MR1 =
108 Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1;
109
110 public static final boolean ATLEAST_LOLLIPOP =
111 Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP;
112
113 public static final boolean ATLEAST_KITKAT =
114 Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
115
116 public static final boolean ATLEAST_JB_MR1 =
117 Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
118
119 public static final boolean ATLEAST_JB_MR2 =
120 Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
121
Sunny Goyal6f866092016-03-17 17:04:15 -0700122 // An intent extra to indicate the horizontal scroll of the wallpaper.
123 public static final String EXTRA_WALLPAPER_OFFSET = "com.android.launcher3.WALLPAPER_OFFSET";
124
Sunny Goyal8ac727b2015-09-23 15:38:09 -0700125 // These values are same as that in {@link AsyncTask}.
126 private static final int CPU_COUNT = Runtime.getRuntime().availableProcessors();
127 private static final int CORE_POOL_SIZE = CPU_COUNT + 1;
128 private static final int MAXIMUM_POOL_SIZE = CPU_COUNT * 2 + 1;
129 private static final int KEEP_ALIVE = 1;
130 /**
131 * An {@link Executor} to be used with async task with no limit on the queue size.
132 */
133 public static final Executor THREAD_POOL_EXECUTOR = new ThreadPoolExecutor(
134 CORE_POOL_SIZE, MAXIMUM_POOL_SIZE, KEEP_ALIVE,
135 TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>());
136
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -0700137 public static final String ALLOW_ROTATION_PREFERENCE_KEY = "pref_allowRotation";
138
Sunny Goyal4bbf4192014-11-11 12:23:59 -0800139 public static boolean isPropertyEnabled(String propertyName) {
Michael Jurka7ad868b2013-12-12 15:04:25 +0100140 return Log.isLoggable(propertyName, Log.VERBOSE);
141 }
142
Sunny Goyal21bf5312015-08-21 11:08:24 -0700143 public static boolean isAllowRotationPrefEnabled(Context context) {
Sunny Goyal8f3819b2016-02-23 14:49:22 -0800144 boolean allowRotationPref = false;
145 if (isNycOrAbove()) {
146 // If the device was scaled, used the original dimensions to determine if rotation
147 // is allowed of not.
148 try {
149 // TODO: Use the actual field when the API is finalized.
150 int originalDensity =
151 DisplayMetrics.class.getField("DENSITY_DEVICE_STABLE").getInt(null);
152 Resources res = context.getResources();
153 int originalSmallestWidth = res.getConfiguration().smallestScreenWidthDp
154 * res.getDisplayMetrics().densityDpi / originalDensity;
155 allowRotationPref = originalSmallestWidth >= 600;
156 } catch (Exception e) {
157 // Ignore
158 }
159 }
Rahul Chaturvedi7fc77ca2015-05-19 18:02:16 -0700160
Sunny Goyal8f3819b2016-02-23 14:49:22 -0800161 return getPrefs(context).getBoolean(ALLOW_ROTATION_PREFERENCE_KEY, allowRotationPref);
Michael Jurka7ad868b2013-12-12 15:04:25 +0100162 }
163
Vadim Tryshev9de91272015-08-03 18:37:17 -0700164 public static boolean isNycOrAbove() {
165 // TODO(vadimt): Replace using reflection with looking at the API version once
166 // Build.VERSION.SDK_INT gets bumped to 24. b/22942492.
167 try {
168 View.class.getDeclaredField("DRAG_FLAG_OPAQUE");
169 // View.DRAG_FLAG_OPAQUE doesn't exist in M-release, so it's an indication of N+.
170 return true;
171 } catch (NoSuchFieldException e) {
172 return false;
173 }
174 }
175
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700176 public static Bitmap createIconBitmap(Cursor c, int iconIndex, Context context) {
Sunny Goyal4fbc3822015-02-18 16:46:50 -0800177 byte[] data = c.getBlob(iconIndex);
178 try {
179 return createIconBitmap(BitmapFactory.decodeByteArray(data, 0, data.length), context);
180 } catch (Exception e) {
181 return null;
182 }
183 }
184
Sandeep Siddhartha2efc7d92014-05-16 17:21:15 -0700185 /**
Sunny Goyalb50cc8c2014-10-06 16:23:56 -0700186 * Returns a bitmap suitable for the all apps view. If the package or the resource do not
187 * exist, it returns null.
188 */
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700189 public static Bitmap createIconBitmap(String packageName, String resourceName,
Sunny Goyalb50cc8c2014-10-06 16:23:56 -0700190 Context context) {
191 PackageManager packageManager = context.getPackageManager();
192 // the resource
193 try {
194 Resources resources = packageManager.getResourcesForApplication(packageName);
195 if (resources != null) {
196 final int id = resources.getIdentifier(resourceName, null, null);
197 return createIconBitmap(
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700198 resources.getDrawableForDensity(id, LauncherAppState.getInstance()
199 .getInvariantDeviceProfile().fillResIconDpi), context);
Sunny Goyalb50cc8c2014-10-06 16:23:56 -0700200 }
201 } catch (Exception e) {
202 // Icon not found.
203 }
204 return null;
205 }
206
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700207 private static int getIconBitmapSize() {
208 return LauncherAppState.getInstance().getInvariantDeviceProfile().iconBitmapSize;
209 }
210
Sunny Goyalb50cc8c2014-10-06 16:23:56 -0700211 /**
Sunny Goyal2fce90c2014-10-07 12:01:58 -0700212 * Returns a bitmap which is of the appropriate size to be displayed as an icon
Michael Jurka931dc972011-08-05 15:08:15 -0700213 */
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700214 public static Bitmap createIconBitmap(Bitmap icon, Context context) {
215 final int iconBitmapSize = getIconBitmapSize();
216 if (iconBitmapSize == icon.getWidth() && iconBitmapSize == icon.getHeight()) {
Sunny Goyal2fce90c2014-10-07 12:01:58 -0700217 return icon;
218 }
219 return createIconBitmap(new BitmapDrawable(context.getResources(), icon), context);
Michael Jurka931dc972011-08-05 15:08:15 -0700220 }
221
222 /**
Sunny Goyalfc218302015-09-17 14:59:10 -0700223 * Returns a bitmap suitable for the all apps view. The icon is badged for {@param user}.
224 * The bitmap is also visually normalized with other icons.
Sunny Goyalb84046d2015-10-19 14:03:30 -0700225 */
226 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
227 public static Bitmap createBadgedIconBitmap(
228 Drawable icon, UserHandleCompat user, Context context) {
Sunny Goyal531cda62016-03-03 13:19:24 -0800229 float scale = FeatureFlags.LAUNCHER3_DISABLE_ICON_NORMALIZATION ?
230 1 : IconNormalizer.getInstance().getScale(icon);
Sunny Goyalfc218302015-09-17 14:59:10 -0700231 Bitmap bitmap = createIconBitmap(icon, context, scale);
Sunny Goyalb84046d2015-10-19 14:03:30 -0700232 if (Utilities.ATLEAST_LOLLIPOP && user != null
233 && !UserHandleCompat.myUserHandle().equals(user)) {
Sunny Goyale1483fb2016-01-08 12:16:15 -0800234 BitmapDrawable drawable = new FixedSizeBitmapDrawable(bitmap);
Sunny Goyalb84046d2015-10-19 14:03:30 -0700235 Drawable badged = context.getPackageManager().getUserBadgedIcon(
236 drawable, user.getUser());
237 if (badged instanceof BitmapDrawable) {
238 return ((BitmapDrawable) badged).getBitmap();
239 } else {
240 return createIconBitmap(badged, context);
241 }
242 } else {
243 return bitmap;
244 }
245 }
246
247 /**
Michael Jurka931dc972011-08-05 15:08:15 -0700248 * Returns a bitmap suitable for the all apps view.
Joe Onorato6665c0f2009-09-02 15:27:24 -0700249 */
Mathew Inwood72fbec12013-11-19 15:45:07 +0000250 public static Bitmap createIconBitmap(Drawable icon, Context context) {
Sunny Goyalfc218302015-09-17 14:59:10 -0700251 return createIconBitmap(icon, context, 1.0f /* scale */);
252 }
253
254 /**
255 * @param scale the scale to apply before drawing {@param icon} on the canvas
256 */
257 public static Bitmap createIconBitmap(Drawable icon, Context context, float scale) {
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700258 synchronized (sCanvas) {
259 final int iconBitmapSize = getIconBitmapSize();
Joe Onorato6665c0f2009-09-02 15:27:24 -0700260
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700261 int width = iconBitmapSize;
262 int height = iconBitmapSize;
Joe Onorato6665c0f2009-09-02 15:27:24 -0700263
Joe Onorato6665c0f2009-09-02 15:27:24 -0700264 if (icon instanceof PaintDrawable) {
265 PaintDrawable painter = (PaintDrawable) icon;
266 painter.setIntrinsicWidth(width);
267 painter.setIntrinsicHeight(height);
268 } else if (icon instanceof BitmapDrawable) {
269 // Ensure the bitmap has a density.
270 BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
271 Bitmap bitmap = bitmapDrawable.getBitmap();
Sunny Goyalde9590b2015-09-23 12:56:51 -0700272 if (bitmap != null && bitmap.getDensity() == Bitmap.DENSITY_NONE) {
Joe Onorato6665c0f2009-09-02 15:27:24 -0700273 bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics());
274 }
275 }
276 int sourceWidth = icon.getIntrinsicWidth();
277 int sourceHeight = icon.getIntrinsicHeight();
Michael Jurka931dc972011-08-05 15:08:15 -0700278 if (sourceWidth > 0 && sourceHeight > 0) {
Winson Chung5f8afe62013-08-12 16:19:28 -0700279 // Scale the icon proportionally to the icon dimensions
280 final float ratio = (float) sourceWidth / sourceHeight;
281 if (sourceWidth > sourceHeight) {
282 height = (int) (width / ratio);
283 } else if (sourceHeight > sourceWidth) {
284 width = (int) (height * ratio);
Joe Onorato6665c0f2009-09-02 15:27:24 -0700285 }
286 }
287
288 // no intrinsic size --> use default size
Sunny Goyal53d7ee42015-05-22 12:25:45 -0700289 int textureWidth = iconBitmapSize;
290 int textureHeight = iconBitmapSize;
Joe Onorato6665c0f2009-09-02 15:27:24 -0700291
292 final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight,
293 Bitmap.Config.ARGB_8888);
294 final Canvas canvas = sCanvas;
295 canvas.setBitmap(bitmap);
296
297 final int left = (textureWidth-width) / 2;
298 final int top = (textureHeight-height) / 2;
299
Michael Jurka3a9fced2012-04-13 14:44:29 -0700300 @SuppressWarnings("all") // suppress dead code warning
301 final boolean debug = false;
302 if (debug) {
Joe Onorato6665c0f2009-09-02 15:27:24 -0700303 // draw a big box for the icon for debugging
304 canvas.drawColor(sColors[sColorIndex]);
305 if (++sColorIndex >= sColors.length) sColorIndex = 0;
306 Paint debugPaint = new Paint();
307 debugPaint.setColor(0xffcccc00);
308 canvas.drawRect(left, top, left+width, top+height, debugPaint);
309 }
310
311 sOldBounds.set(icon.getBounds());
312 icon.setBounds(left, top, left+width, top+height);
Sunny Goyalfc218302015-09-17 14:59:10 -0700313 canvas.save(Canvas.MATRIX_SAVE_FLAG);
314 canvas.scale(scale, scale, textureWidth / 2, textureHeight / 2);
Joe Onorato6665c0f2009-09-02 15:27:24 -0700315 icon.draw(canvas);
Sunny Goyalfc218302015-09-17 14:59:10 -0700316 canvas.restore();
Joe Onorato6665c0f2009-09-02 15:27:24 -0700317 icon.setBounds(sOldBounds);
Adam Cohenaaf473c2011-08-03 12:02:47 -0700318 canvas.setBitmap(null);
Joe Onorato6665c0f2009-09-02 15:27:24 -0700319
320 return bitmap;
321 }
322 }
323
The Android Open Source Project31dd5032009-03-03 19:32:27 -0800324 /**
Winson Chungc763c4e2013-07-19 13:49:06 -0700325 * Given a coordinate relative to the descendant, find the coordinate in a parent view's
326 * coordinates.
327 *
328 * @param descendant The descendant to which the passed coordinate is relative.
329 * @param root The root view to make the coordinates relative to.
330 * @param coord The coordinate that we want mapped.
331 * @param includeRootScroll Whether or not to account for the scroll of the descendant:
332 * sometimes this is relevant as in a child's coordinates within the descendant.
333 * @return The factor by which this descendant is scaled relative to this DragLayer. Caution
334 * this scale factor is assumed to be equal in X and Y, and so if at any point this
335 * assumption fails, we will need to return a pair of scale factors.
336 */
337 public static float getDescendantCoordRelativeToParent(View descendant, View root,
338 int[] coord, boolean includeRootScroll) {
339 ArrayList<View> ancestorChain = new ArrayList<View>();
340
341 float[] pt = {coord[0], coord[1]};
342
343 View v = descendant;
344 while(v != root && v != null) {
345 ancestorChain.add(v);
346 v = (View) v.getParent();
347 }
348 ancestorChain.add(root);
349
350 float scale = 1.0f;
351 int count = ancestorChain.size();
352 for (int i = 0; i < count; i++) {
353 View v0 = ancestorChain.get(i);
Winson Chungc763c4e2013-07-19 13:49:06 -0700354 // For TextViews, scroll has a meaning which relates to the text position
355 // which is very strange... ignore the scroll.
356 if (v0 != descendant || includeRootScroll) {
357 pt[0] -= v0.getScrollX();
358 pt[1] -= v0.getScrollY();
359 }
360
361 v0.getMatrix().mapPoints(pt);
362 pt[0] += v0.getLeft();
363 pt[1] += v0.getTop();
364 scale *= v0.getScaleX();
365 }
366
367 coord[0] = (int) Math.round(pt[0]);
368 coord[1] = (int) Math.round(pt[1]);
369 return scale;
370 }
371
372 /**
Sunny Goyalfc218302015-09-17 14:59:10 -0700373 * Inverse of {@link #getDescendantCoordRelativeToParent(View, View, int[], boolean)}.
Winson Chungc763c4e2013-07-19 13:49:06 -0700374 */
375 public static float mapCoordInSelfToDescendent(View descendant, View root,
376 int[] coord) {
377 ArrayList<View> ancestorChain = new ArrayList<View>();
378
379 float[] pt = {coord[0], coord[1]};
380
381 View v = descendant;
382 while(v != root) {
383 ancestorChain.add(v);
384 v = (View) v.getParent();
385 }
386 ancestorChain.add(root);
387
388 float scale = 1.0f;
389 Matrix inverse = new Matrix();
390 int count = ancestorChain.size();
391 for (int i = count - 1; i >= 0; i--) {
392 View ancestor = ancestorChain.get(i);
393 View next = i > 0 ? ancestorChain.get(i-1) : null;
394
395 pt[0] += ancestor.getScrollX();
396 pt[1] += ancestor.getScrollY();
397
398 if (next != null) {
399 pt[0] -= next.getLeft();
400 pt[1] -= next.getTop();
401 next.getMatrix().invert(inverse);
402 inverse.mapPoints(pt);
403 scale *= next.getScaleX();
404 }
405 }
406
407 coord[0] = (int) Math.round(pt[0]);
408 coord[1] = (int) Math.round(pt[1]);
409 return scale;
410 }
411
Jason Monk02dd7ae2014-04-15 15:23:31 -0400412 /**
413 * Utility method to determine whether the given point, in local coordinates,
414 * is inside the view, where the area of the view is expanded by the slop factor.
415 * This method is called while processing touch-move events to determine if the event
416 * is still within the view.
417 */
418 public static boolean pointInView(View v, float localX, float localY, float slop) {
419 return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) &&
420 localY < (v.getHeight() + slop);
421 }
422
Adam Cohen63f1ec02014-08-12 09:23:13 -0700423 public static int[] getCenterDeltaInScreenSpace(View v0, View v1, int[] delta) {
424 v0.getLocationInWindow(sLoc0);
425 v1.getLocationInWindow(sLoc1);
426
427 sLoc0[0] += (v0.getMeasuredWidth() * v0.getScaleX()) / 2;
428 sLoc0[1] += (v0.getMeasuredHeight() * v0.getScaleY()) / 2;
429 sLoc1[0] += (v1.getMeasuredWidth() * v1.getScaleX()) / 2;
430 sLoc1[1] += (v1.getMeasuredHeight() * v1.getScaleY()) / 2;
431
432 if (delta == null) {
433 delta = new int[2];
434 }
435
436 delta[0] = sLoc1[0] - sLoc0[0];
437 delta[1] = sLoc1[1] - sLoc0[1];
438
439 return delta;
440 }
441
Winson Chung3a6e7f32013-10-09 15:50:52 -0700442 public static void scaleRectAboutCenter(Rect r, float scale) {
Sunny Goyal106bf642015-07-16 12:18:06 -0700443 if (scale != 1.0f) {
444 int cx = r.centerX();
445 int cy = r.centerY();
446 r.offset(-cx, -cy);
447
448 r.left = (int) (r.left * scale + 0.5f);
449 r.top = (int) (r.top * scale + 0.5f);
450 r.right = (int) (r.right * scale + 0.5f);
451 r.bottom = (int) (r.bottom * scale + 0.5f);
452
453 r.offset(cx, cy);
454 }
Winson Chung3a6e7f32013-10-09 15:50:52 -0700455 }
456
Michael Jurkaa805e1a2013-08-22 15:00:33 +0200457 public static void startActivityForResultSafely(
458 Activity activity, Intent intent, int requestCode) {
459 try {
460 activity.startActivityForResult(intent, requestCode);
461 } catch (ActivityNotFoundException e) {
462 Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
463 } catch (SecurityException e) {
464 Toast.makeText(activity, R.string.activity_not_found, Toast.LENGTH_SHORT).show();
465 Log.e(TAG, "Launcher does not have the permission to launch " + intent +
466 ". Make sure to create a MAIN intent-filter for the corresponding activity " +
467 "or use the exported attribute for this activity.", e);
468 }
469 }
Sunny Goyalc5c60ad2014-07-14 12:02:01 -0700470
471 static boolean isSystemApp(Context context, Intent intent) {
472 PackageManager pm = context.getPackageManager();
473 ComponentName cn = intent.getComponent();
474 String packageName = null;
475 if (cn == null) {
476 ResolveInfo info = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
477 if ((info != null) && (info.activityInfo != null)) {
478 packageName = info.activityInfo.packageName;
479 }
480 } else {
481 packageName = cn.getPackageName();
482 }
483 if (packageName != null) {
484 try {
485 PackageInfo info = pm.getPackageInfo(packageName, 0);
486 return (info != null) && (info.applicationInfo != null) &&
487 ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
488 } catch (NameNotFoundException e) {
489 return false;
490 }
491 } else {
492 return false;
493 }
494 }
Sunny Goyal95abbb32014-08-04 10:53:22 -0700495
496 /**
497 * This picks a dominant color, looking for high-saturation, high-value, repeated hues.
498 * @param bitmap The bitmap to scan
499 * @param samples The approximate max number of samples to use.
500 */
501 static int findDominantColorByHue(Bitmap bitmap, int samples) {
502 final int height = bitmap.getHeight();
503 final int width = bitmap.getWidth();
504 int sampleStride = (int) Math.sqrt((height * width) / samples);
505 if (sampleStride < 1) {
506 sampleStride = 1;
507 }
508
509 // This is an out-param, for getting the hsv values for an rgb
510 float[] hsv = new float[3];
511
512 // First get the best hue, by creating a histogram over 360 hue buckets,
513 // where each pixel contributes a score weighted by saturation, value, and alpha.
514 float[] hueScoreHistogram = new float[360];
515 float highScore = -1;
516 int bestHue = -1;
517
518 for (int y = 0; y < height; y += sampleStride) {
519 for (int x = 0; x < width; x += sampleStride) {
520 int argb = bitmap.getPixel(x, y);
521 int alpha = 0xFF & (argb >> 24);
522 if (alpha < 0x80) {
523 // Drop mostly-transparent pixels.
524 continue;
525 }
526 // Remove the alpha channel.
527 int rgb = argb | 0xFF000000;
528 Color.colorToHSV(rgb, hsv);
529 // Bucket colors by the 360 integer hues.
530 int hue = (int) hsv[0];
531 if (hue < 0 || hue >= hueScoreHistogram.length) {
532 // Defensively avoid array bounds violations.
533 continue;
534 }
535 float score = hsv[1] * hsv[2];
536 hueScoreHistogram[hue] += score;
537 if (hueScoreHistogram[hue] > highScore) {
538 highScore = hueScoreHistogram[hue];
539 bestHue = hue;
540 }
541 }
542 }
543
544 SparseArray<Float> rgbScores = new SparseArray<Float>();
545 int bestColor = 0xff000000;
546 highScore = -1;
547 // Go back over the RGB colors that match the winning hue,
548 // creating a histogram of weighted s*v scores, for up to 100*100 [s,v] buckets.
549 // The highest-scoring RGB color wins.
550 for (int y = 0; y < height; y += sampleStride) {
551 for (int x = 0; x < width; x += sampleStride) {
552 int rgb = bitmap.getPixel(x, y) | 0xff000000;
553 Color.colorToHSV(rgb, hsv);
554 int hue = (int) hsv[0];
555 if (hue == bestHue) {
556 float s = hsv[1];
557 float v = hsv[2];
558 int bucket = (int) (s * 100) + (int) (v * 10000);
559 // Score by cumulative saturation * value.
560 float score = s * v;
561 Float oldTotal = rgbScores.get(bucket);
562 float newTotal = oldTotal == null ? score : oldTotal + score;
563 rgbScores.put(bucket, newTotal);
564 if (newTotal > highScore) {
565 highScore = newTotal;
566 // All the colors in the winning bucket are very similar. Last in wins.
567 bestColor = rgb;
568 }
569 }
570 }
571 }
572 return bestColor;
573 }
Sunny Goyal0fe505b2014-08-06 09:55:36 -0700574
575 /*
576 * Finds a system apk which had a broadcast receiver listening to a particular action.
577 * @param action intent action used to find the apk
578 * @return a pair of apk package name and the resources.
579 */
580 static Pair<String, Resources> findSystemApk(String action, PackageManager pm) {
581 final Intent intent = new Intent(action);
582 for (ResolveInfo info : pm.queryBroadcastReceivers(intent, 0)) {
583 if (info.activityInfo != null &&
584 (info.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
585 final String packageName = info.activityInfo.packageName;
586 try {
587 final Resources res = pm.getResourcesForApplication(packageName);
588 return Pair.create(packageName, res);
589 } catch (NameNotFoundException e) {
590 Log.w(TAG, "Failed to find resources for " + packageName);
591 }
592 }
593 }
594 return null;
595 }
Sunny Goyalfafca522014-11-03 11:30:01 -0800596
Sunny Goyal594d76d2014-11-06 10:12:54 -0800597 /**
598 * Returns a widget with category {@link AppWidgetProviderInfo#WIDGET_CATEGORY_SEARCHBOX}
599 * provided by the same package which is set to be global search activity.
600 * If widgetCategory is not supported, or no such widget is found, returns the first widget
601 * provided by the package.
602 */
603 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
604 public static AppWidgetProviderInfo getSearchWidgetProvider(Context context) {
605 SearchManager searchManager =
606 (SearchManager) context.getSystemService(Context.SEARCH_SERVICE);
607 ComponentName searchComponent = searchManager.getGlobalSearchActivity();
608 if (searchComponent == null) return null;
609 String providerPkg = searchComponent.getPackageName();
610
611 AppWidgetProviderInfo defaultWidgetForSearchPackage = null;
612
613 AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
614 for (AppWidgetProviderInfo info : appWidgetManager.getInstalledProviders()) {
615 if (info.provider.getPackageName().equals(providerPkg)) {
Sunny Goyal9fc953b2015-08-17 12:24:25 -0700616 if (ATLEAST_JB_MR1) {
Sunny Goyal594d76d2014-11-06 10:12:54 -0800617 if ((info.widgetCategory & AppWidgetProviderInfo.WIDGET_CATEGORY_SEARCHBOX) != 0) {
618 return info;
619 } else if (defaultWidgetForSearchPackage == null) {
620 defaultWidgetForSearchPackage = info;
621 }
622 } else {
623 return info;
624 }
625 }
626 }
627 return defaultWidgetForSearchPackage;
628 }
Sunny Goyal08f72612015-01-05 13:41:43 -0800629
Sunny Goyal5b0e6692015-03-19 14:31:19 -0700630 /**
631 * Compresses the bitmap to a byte array for serialization.
632 */
633 public static byte[] flattenBitmap(Bitmap bitmap) {
634 // Try go guesstimate how much space the icon will take when serialized
635 // to avoid unnecessary allocations/copies during the write.
636 int size = bitmap.getWidth() * bitmap.getHeight() * 4;
637 ByteArrayOutputStream out = new ByteArrayOutputStream(size);
638 try {
639 bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
640 out.flush();
641 out.close();
642 return out.toByteArray();
643 } catch (IOException e) {
644 Log.w(TAG, "Could not write bitmap");
645 return null;
646 }
647 }
648
Sunny Goyalf7a29e82015-04-24 15:20:43 -0700649 /**
650 * Find the first vacant cell, if there is one.
651 *
652 * @param vacant Holds the x and y coordinate of the vacant cell
653 * @param spanX Horizontal cell span.
654 * @param spanY Vertical cell span.
655 *
656 * @return true if a vacant cell was found
657 */
658 public static boolean findVacantCell(int[] vacant, int spanX, int spanY,
659 int xCount, int yCount, boolean[][] occupied) {
660
661 for (int y = 0; (y + spanY) <= yCount; y++) {
662 for (int x = 0; (x + spanX) <= xCount; x++) {
663 boolean available = !occupied[x][y];
664 out: for (int i = x; i < x + spanX; i++) {
665 for (int j = y; j < y + spanY; j++) {
666 available = available && !occupied[i][j];
667 if (!available) break out;
668 }
669 }
670
671 if (available) {
672 vacant[0] = x;
673 vacant[1] = y;
674 return true;
675 }
676 }
677 }
678
679 return false;
680 }
Winson Chung82b016c2015-05-08 17:00:10 -0700681
682 /**
683 * Trims the string, removing all whitespace at the beginning and end of the string.
684 * Non-breaking whitespaces are also removed.
685 */
686 public static String trim(CharSequence s) {
Winson Chungafa77e92015-05-15 12:04:03 -0700687 if (s == null) {
688 return null;
689 }
690
Winson Chung82b016c2015-05-08 17:00:10 -0700691 // Just strip any sequence of whitespace or java space characters from the beginning and end
692 Matcher m = sTrimPattern.matcher(s);
693 return m.replaceAll("$1");
694 }
Sunny Goyal70660032015-05-14 00:07:08 -0700695
Winson Chung2c6e5cc2015-06-01 14:38:24 -0700696 /**
697 * Calculates the height of a given string at a specific text size.
698 */
699 public static float calculateTextHeight(float textSizePx) {
700 Paint p = new Paint();
701 p.setTextSize(textSizePx);
702 Paint.FontMetrics fm = p.getFontMetrics();
703 return -fm.top + fm.bottom;
704 }
705
Winson Chungb1777442015-06-16 13:35:04 -0700706 /**
707 * Convenience println with multiple args.
708 */
709 public static void println(String key, Object... args) {
710 StringBuilder b = new StringBuilder();
711 b.append(key);
712 b.append(": ");
713 boolean isFirstArgument = true;
714 for (Object arg : args) {
715 if (isFirstArgument) {
716 isFirstArgument = false;
717 } else {
718 b.append(", ");
719 }
720 b.append(arg);
721 }
722 System.out.println(b.toString());
723 }
724
Sunny Goyal70660032015-05-14 00:07:08 -0700725 @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
726 public static boolean isRtl(Resources res) {
Sunny Goyal9fc953b2015-08-17 12:24:25 -0700727 return ATLEAST_JB_MR1 &&
Sunny Goyal70660032015-05-14 00:07:08 -0700728 (res.getConfiguration().getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
729 }
Hyunyoung Song2bd3d7d2015-05-21 13:04:53 -0700730
731 public static void assertWorkerThread() {
Sunny Goyal6c56c682015-07-16 14:09:05 -0700732 if (ProviderConfig.IS_DOGFOOD_BUILD &&
Sunny Goyal11d49112015-06-26 14:00:57 -0700733 (LauncherModel.sWorkerThread.getThreadId() != Process.myTid())) {
734 throw new IllegalStateException();
Hyunyoung Song2bd3d7d2015-05-21 13:04:53 -0700735 }
736 }
Sunny Goyal5c97f512015-05-19 16:03:28 -0700737
738 /**
739 * Returns true if the intent is a valid launch intent for a launcher activity of an app.
740 * This is used to identify shortcuts which are different from the ones exposed by the
741 * applications' manifest file.
742 *
743 * @param launchIntent The intent that will be launched when the shortcut is clicked.
744 */
745 public static boolean isLauncherAppTarget(Intent launchIntent) {
Sunny Goyal4e5cc642015-06-25 16:37:44 -0700746 if (launchIntent != null
Sunny Goyal5c97f512015-05-19 16:03:28 -0700747 && Intent.ACTION_MAIN.equals(launchIntent.getAction())
748 && launchIntent.getComponent() != null
749 && launchIntent.getCategories() != null
750 && launchIntent.getCategories().size() == 1
751 && launchIntent.hasCategory(Intent.CATEGORY_LAUNCHER)
Sunny Goyal4e5cc642015-06-25 16:37:44 -0700752 && TextUtils.isEmpty(launchIntent.getDataString())) {
753 // An app target can either have no extra or have ItemInfo.EXTRA_PROFILE.
754 Bundle extras = launchIntent.getExtras();
755 if (extras == null) {
756 return true;
757 } else {
758 Set<String> keys = extras.keySet();
759 return keys.size() == 1 && keys.contains(ItemInfo.EXTRA_PROFILE);
760 }
761 };
762 return false;
Sunny Goyal5c97f512015-05-19 16:03:28 -0700763 }
Adam Cohen2e6da152015-05-06 11:42:25 -0700764
765 public static float dpiFromPx(int size, DisplayMetrics metrics){
766 float densityRatio = (float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT;
767 return (size / densityRatio);
768 }
769 public static int pxFromDp(float size, DisplayMetrics metrics) {
770 return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
771 size, metrics));
772 }
773 public static int pxFromSp(float size, DisplayMetrics metrics) {
774 return (int) Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
775 size, metrics));
776 }
Sunny Goyalb1622cc2015-06-10 16:00:42 -0700777
778 public static String createDbSelectionQuery(String columnName, Iterable<?> values) {
779 return String.format(Locale.ENGLISH, "%s IN (%s)", columnName, TextUtils.join(", ", values));
780 }
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700781
Sunny Goyal25aba0a2015-07-16 15:07:47 -0700782 public static boolean isBootCompleted() {
783 try {
784 Class clazz = Class.forName("android.os.SystemProperties");
785 Method getter = clazz.getDeclaredMethod("get", String.class);
786 String value = (String) getter.invoke(null, "sys.boot_completed");
787 return "1".equals(value);
788 } catch (Exception e) {
789 Log.d(TAG, "Unable to read system properties");
790 // Assume that boot has completed
791 return true;
792 }
793 }
Tony Wickham29d853c2015-09-08 10:35:56 -0700794
795 /**
796 * Ensures that a value is within given bounds. Specifically:
797 * If value is less than lowerBound, return lowerBound; else if value is greater than upperBound,
798 * return upperBound; else return value unchanged.
799 */
800 public static int boundInRange(int value, int lowerBound, int upperBound) {
801 return Math.max(lowerBound, Math.min(value, upperBound));
802 }
Sunny Goyal9d438082015-09-25 11:50:16 -0700803
Sunny Goyale78e3d72015-09-24 11:23:31 -0700804 /**
805 * Wraps a message with a TTS span, so that a different message is spoken than
806 * what is getting displayed.
807 * @param msg original message
808 * @param ttsMsg message to be spoken
809 */
810 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
811 public static CharSequence wrapForTts(CharSequence msg, String ttsMsg) {
812 if (Utilities.ATLEAST_LOLLIPOP) {
813 SpannableString spanned = new SpannableString(msg);
814 spanned.setSpan(new TtsSpan.TextBuilder(ttsMsg).build(),
815 0, spanned.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
816 return spanned;
817 } else {
818 return msg;
819 }
820 }
Winson12fb9fc2015-10-01 15:34:08 -0700821
822 /**
823 * Replacement for Long.compare() which was added in API level 19.
824 */
825 public static int longCompare(long lhs, long rhs) {
826 return lhs < rhs ? -1 : (lhs == rhs ? 0 : 1);
827 }
Sunny Goyalf7258242015-10-19 16:59:07 -0700828
829 public static SharedPreferences getPrefs(Context context) {
830 return context.getSharedPreferences(
831 LauncherFiles.SHARED_PREFERENCES_KEY, Context.MODE_PRIVATE);
832 }
Tony Wickham112ac952015-11-12 12:31:50 -0800833
834 @TargetApi(Build.VERSION_CODES.LOLLIPOP)
835 public static boolean isPowerSaverOn(Context context) {
836 PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
837 return ATLEAST_LOLLIPOP && powerManager.isPowerSaveMode();
838 }
Sunny Goyale1483fb2016-01-08 12:16:15 -0800839
840 /**
841 * An extension of {@link BitmapDrawable} which returns the bitmap pixel size as intrinsic size.
842 * This allows the badging to be done based on the action bitmap size rather than
843 * the scaled bitmap size.
844 */
845 private static class FixedSizeBitmapDrawable extends BitmapDrawable {
846
847 public FixedSizeBitmapDrawable(Bitmap bitmap) {
848 super(null, bitmap);
849 }
850
851 @Override
852 public int getIntrinsicHeight() {
853 return getBitmap().getWidth();
854 }
855
856 @Override
857 public int getIntrinsicWidth() {
858 return getBitmap().getWidth();
859 }
860 }
The Android Open Source Project31dd5032009-03-03 19:32:27 -0800861}