Utils.java revision 99704a2787158bf670fa4a7b4e4f89ace10afa00
1/* 2 * Copyright (C) 2006 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 17package com.android.calendar; 18 19import static android.provider.CalendarContract.EXTRA_EVENT_BEGIN_TIME; 20 21import com.android.calendar.CalendarController.ViewType; 22 23import android.app.Activity; 24import android.app.SearchManager; 25import android.content.Context; 26import android.content.Intent; 27import android.content.SharedPreferences; 28import android.content.res.Resources; 29import android.database.Cursor; 30import android.database.MatrixCursor; 31import android.graphics.Color; 32import android.net.Uri; 33import android.os.Bundle; 34import android.text.TextUtils; 35import android.text.format.DateUtils; 36import android.text.format.Time; 37import android.util.Log; 38import android.widget.SearchView; 39 40import com.android.calendar.CalendarUtils.TimeZoneUtils; 41 42import java.util.ArrayList; 43import java.util.Arrays; 44import java.util.Calendar; 45import java.util.Formatter; 46import java.util.HashMap; 47import java.util.Iterator; 48import java.util.LinkedList; 49import java.util.List; 50import java.util.Map; 51 52public class Utils { 53 private static final boolean DEBUG = false; 54 private static final String TAG = "CalUtils"; 55 // Set to 0 until we have UI to perform undo 56 public static final long UNDO_DELAY = 0; 57 58 // For recurring events which instances of the series are being modified 59 public static final int MODIFY_UNINITIALIZED = 0; 60 public static final int MODIFY_SELECTED = 1; 61 public static final int MODIFY_ALL_FOLLOWING = 2; 62 public static final int MODIFY_ALL = 3; 63 64 // When the edit event view finishes it passes back the appropriate exit 65 // code. 66 public static final int DONE_REVERT = 1 << 0; 67 public static final int DONE_SAVE = 1 << 1; 68 public static final int DONE_DELETE = 1 << 2; 69 // And should re run with DONE_EXIT if it should also leave the view, just 70 // exiting is identical to reverting 71 public static final int DONE_EXIT = 1 << 0; 72 73 public static final String OPEN_EMAIL_MARKER = " <"; 74 public static final String CLOSE_EMAIL_MARKER = ">"; 75 76 public static final String INTENT_KEY_DETAIL_VIEW = "DETAIL_VIEW"; 77 public static final String INTENT_KEY_VIEW_TYPE = "VIEW"; 78 public static final String INTENT_VALUE_VIEW_TYPE_DAY = "DAY"; 79 public static final String INTENT_KEY_HOME = "KEY_HOME"; 80 81 public static final int MONDAY_BEFORE_JULIAN_EPOCH = Time.EPOCH_JULIAN_DAY - 3; 82 public static final int DECLINED_EVENT_ALPHA = 0x66; 83 public static final int DECLINED_EVENT_TEXT_ALPHA = 0xC0; 84 85 private static final float SATURATION_ADJUST = 0.3f; 86 87 // Defines used by the DNA generation code 88 static final int DAY_IN_MINUTES = 60 * 24; 89 static final int WEEK_IN_MINUTES = DAY_IN_MINUTES * 7; 90 // The work day is being counted as 6am to 8pm 91 static int WORK_DAY_MINUTES = 14 * 60; 92 static int WORK_DAY_START_MINUTES = 6 * 60; 93 static int WORK_DAY_END_MINUTES = 20 * 60; 94 static int WORK_DAY_END_LENGTH = (24 * 60) - WORK_DAY_END_MINUTES; 95 static int CONFLICT_COLOR = 0xFF000000; 96 static boolean mMinutesLoaded = false; 97 98 // The name of the shared preferences file. This name must be maintained for 99 // historical 100 // reasons, as it's what PreferenceManager assigned the first time the file 101 // was created. 102 private static final String SHARED_PREFS_NAME = "com.android.calendar_preferences"; 103 104 public static final String APPWIDGET_DATA_TYPE = "vnd.android.data/update"; 105 106 private static final TimeZoneUtils mTZUtils = new TimeZoneUtils(SHARED_PREFS_NAME); 107 private static boolean mAllowWeekForDetailView = false; 108 private static long mTardis = 0; 109 110 public static int getViewTypeFromIntentAndSharedPref(Activity activity) { 111 Intent intent = activity.getIntent(); 112 Bundle extras = intent.getExtras(); 113 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(activity); 114 115 if (TextUtils.equals(intent.getAction(), Intent.ACTION_EDIT)) { 116 return ViewType.EDIT; 117 } 118 if (extras != null) { 119 if (extras.getBoolean(INTENT_KEY_DETAIL_VIEW, false)) { 120 // This is the "detail" view which is either agenda or day view 121 return prefs.getInt(GeneralPreferences.KEY_DETAILED_VIEW, 122 GeneralPreferences.DEFAULT_DETAILED_VIEW); 123 } else if (INTENT_VALUE_VIEW_TYPE_DAY.equals(extras.getString(INTENT_KEY_VIEW_TYPE))) { 124 // Not sure who uses this. This logic came from LaunchActivity 125 return ViewType.DAY; 126 } 127 } 128 129 // Default to the last view 130 return prefs.getInt( 131 GeneralPreferences.KEY_START_VIEW, GeneralPreferences.DEFAULT_START_VIEW); 132 } 133 134 /** 135 * Gets the intent action for telling the widget to update. 136 */ 137 public static String getWidgetUpdateAction(Context context) { 138 return context.getPackageName() + ".APPWIDGET_UPDATE"; 139 } 140 141 /** 142 * Gets the intent action for telling the widget to update. 143 */ 144 public static String getWidgetScheduledUpdateAction(Context context) { 145 return context.getPackageName() + ".APPWIDGET_SCHEDULED_UPDATE"; 146 } 147 148 /** 149 * Gets the intent action for telling the widget to update. 150 */ 151 public static String getSearchAuthority(Context context) { 152 return context.getPackageName() + ".CalendarRecentSuggestionsProvider"; 153 } 154 155 /** 156 * Writes a new home time zone to the db. Updates the home time zone in the 157 * db asynchronously and updates the local cache. Sending a time zone of 158 * **tbd** will cause it to be set to the device's time zone. null or empty 159 * tz will be ignored. 160 * 161 * @param context The calling activity 162 * @param timeZone The time zone to set Calendar to, or **tbd** 163 */ 164 public static void setTimeZone(Context context, String timeZone) { 165 mTZUtils.setTimeZone(context, timeZone); 166 } 167 168 /** 169 * Gets the time zone that Calendar should be displayed in This is a helper 170 * method to get the appropriate time zone for Calendar. If this is the 171 * first time this method has been called it will initiate an asynchronous 172 * query to verify that the data in preferences is correct. The callback 173 * supplied will only be called if this query returns a value other than 174 * what is stored in preferences and should cause the calling activity to 175 * refresh anything that depends on calling this method. 176 * 177 * @param context The calling activity 178 * @param callback The runnable that should execute if a query returns new 179 * values 180 * @return The string value representing the time zone Calendar should 181 * display 182 */ 183 public static String getTimeZone(Context context, Runnable callback) { 184 return mTZUtils.getTimeZone(context, callback); 185 } 186 187 /** 188 * Formats a date or a time range according to the local conventions. 189 * 190 * @param context the context is required only if the time is shown 191 * @param startMillis the start time in UTC milliseconds 192 * @param endMillis the end time in UTC milliseconds 193 * @param flags a bit mask of options See {@link DateUtils#formatDateRange(Context, Formatter, 194 * long, long, int, String) formatDateRange} 195 * @return a string containing the formatted date/time range. 196 */ 197 public static String formatDateRange( 198 Context context, long startMillis, long endMillis, int flags) { 199 return mTZUtils.formatDateRange(context, startMillis, endMillis, flags); 200 } 201 202 public static String getSharedPreference(Context context, String key, String defaultValue) { 203 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 204 return prefs.getString(key, defaultValue); 205 } 206 207 public static int getSharedPreference(Context context, String key, int defaultValue) { 208 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 209 return prefs.getInt(key, defaultValue); 210 } 211 212 public static boolean getSharedPreference(Context context, String key, boolean defaultValue) { 213 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 214 return prefs.getBoolean(key, defaultValue); 215 } 216 217 /** 218 * Asynchronously sets the preference with the given key to the given value 219 * 220 * @param context the context to use to get preferences from 221 * @param key the key of the preference to set 222 * @param value the value to set 223 */ 224 public static void setSharedPreference(Context context, String key, String value) { 225 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 226 prefs.edit().putString(key, value).apply(); 227 } 228 229 protected static void tardis() { 230 mTardis = System.currentTimeMillis(); 231 } 232 233 protected static long getTardis() { 234 return mTardis; 235 } 236 237 static void setSharedPreference(Context context, String key, boolean value) { 238 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 239 SharedPreferences.Editor editor = prefs.edit(); 240 editor.putBoolean(key, value); 241 editor.apply(); 242 } 243 244 static void setSharedPreference(Context context, String key, int value) { 245 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 246 SharedPreferences.Editor editor = prefs.edit(); 247 editor.putInt(key, value); 248 editor.apply(); 249 } 250 251 /** 252 * Save default agenda/day/week/month view for next time 253 * 254 * @param context 255 * @param viewId {@link CalendarController.ViewType} 256 */ 257 static void setDefaultView(Context context, int viewId) { 258 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 259 SharedPreferences.Editor editor = prefs.edit(); 260 261 boolean validDetailView = false; 262 if (mAllowWeekForDetailView && viewId == CalendarController.ViewType.WEEK) { 263 validDetailView = true; 264 } else { 265 validDetailView = viewId == CalendarController.ViewType.AGENDA 266 || viewId == CalendarController.ViewType.DAY; 267 } 268 269 if (validDetailView) { 270 // Record the detail start view 271 editor.putInt(GeneralPreferences.KEY_DETAILED_VIEW, viewId); 272 } 273 274 // Record the (new) start view 275 editor.putInt(GeneralPreferences.KEY_START_VIEW, viewId); 276 editor.apply(); 277 } 278 279 public static MatrixCursor matrixCursorFromCursor(Cursor cursor) { 280 MatrixCursor newCursor = new MatrixCursor(cursor.getColumnNames()); 281 int numColumns = cursor.getColumnCount(); 282 String data[] = new String[numColumns]; 283 cursor.moveToPosition(-1); 284 while (cursor.moveToNext()) { 285 for (int i = 0; i < numColumns; i++) { 286 data[i] = cursor.getString(i); 287 } 288 newCursor.addRow(data); 289 } 290 return newCursor; 291 } 292 293 /** 294 * Compares two cursors to see if they contain the same data. 295 * 296 * @return Returns true of the cursors contain the same data and are not 297 * null, false otherwise 298 */ 299 public static boolean compareCursors(Cursor c1, Cursor c2) { 300 if (c1 == null || c2 == null) { 301 return false; 302 } 303 304 int numColumns = c1.getColumnCount(); 305 if (numColumns != c2.getColumnCount()) { 306 return false; 307 } 308 309 if (c1.getCount() != c2.getCount()) { 310 return false; 311 } 312 313 c1.moveToPosition(-1); 314 c2.moveToPosition(-1); 315 while (c1.moveToNext() && c2.moveToNext()) { 316 for (int i = 0; i < numColumns; i++) { 317 if (!TextUtils.equals(c1.getString(i), c2.getString(i))) { 318 return false; 319 } 320 } 321 } 322 323 return true; 324 } 325 326 /** 327 * If the given intent specifies a time (in milliseconds since the epoch), 328 * then that time is returned. Otherwise, the current time is returned. 329 */ 330 public static final long timeFromIntentInMillis(Intent intent) { 331 // If the time was specified, then use that. Otherwise, use the current 332 // time. 333 Uri data = intent.getData(); 334 long millis = intent.getLongExtra(EXTRA_EVENT_BEGIN_TIME, -1); 335 if (millis == -1 && data != null && data.isHierarchical()) { 336 List<String> path = data.getPathSegments(); 337 if (path.size() == 2 && path.get(0).equals("time")) { 338 try { 339 millis = Long.valueOf(data.getLastPathSegment()); 340 } catch (NumberFormatException e) { 341 Log.i("Calendar", "timeFromIntentInMillis: Data existed but no valid time " 342 + "found. Using current time."); 343 } 344 } 345 } 346 if (millis <= 0) { 347 millis = System.currentTimeMillis(); 348 } 349 return millis; 350 } 351 352 /** 353 * Formats the given Time object so that it gives the month and year (for 354 * example, "September 2007"). 355 * 356 * @param time the time to format 357 * @return the string containing the weekday and the date 358 */ 359 public static String formatMonthYear(Context context, Time time) { 360 int flags = DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_NO_MONTH_DAY 361 | DateUtils.FORMAT_SHOW_YEAR; 362 long millis = time.toMillis(true); 363 return formatDateRange(context, millis, millis, flags); 364 } 365 366 /** 367 * Returns a list joined together by the provided delimiter, for example, 368 * ["a", "b", "c"] could be joined into "a,b,c" 369 * 370 * @param things the things to join together 371 * @param delim the delimiter to use 372 * @return a string contained the things joined together 373 */ 374 public static String join(List<?> things, String delim) { 375 StringBuilder builder = new StringBuilder(); 376 boolean first = true; 377 for (Object thing : things) { 378 if (first) { 379 first = false; 380 } else { 381 builder.append(delim); 382 } 383 builder.append(thing.toString()); 384 } 385 return builder.toString(); 386 } 387 388 /** 389 * Returns the week since {@link Time#EPOCH_JULIAN_DAY} (Jan 1, 1970) 390 * adjusted for first day of week. 391 * 392 * This takes a julian day and the week start day and calculates which 393 * week since {@link Time#EPOCH_JULIAN_DAY} that day occurs in, starting 394 * at 0. *Do not* use this to compute the ISO week number for the year. 395 * 396 * @param julianDay The julian day to calculate the week number for 397 * @param firstDayOfWeek Which week day is the first day of the week, 398 * see {@link Time#SUNDAY} 399 * @return Weeks since the epoch 400 */ 401 public static int getWeeksSinceEpochFromJulianDay(int julianDay, int firstDayOfWeek) { 402 int diff = Time.THURSDAY - firstDayOfWeek; 403 if (diff < 0) { 404 diff += 7; 405 } 406 int refDay = Time.EPOCH_JULIAN_DAY - diff; 407 return (julianDay - refDay) / 7; 408 } 409 410 /** 411 * Takes a number of weeks since the epoch and calculates the Julian day of 412 * the Monday for that week. 413 * 414 * This assumes that the week containing the {@link Time#EPOCH_JULIAN_DAY} 415 * is considered week 0. It returns the Julian day for the Monday 416 * {@code week} weeks after the Monday of the week containing the epoch. 417 * 418 * @param week Number of weeks since the epoch 419 * @return The julian day for the Monday of the given week since the epoch 420 */ 421 public static int getJulianMondayFromWeeksSinceEpoch(int week) { 422 return MONDAY_BEFORE_JULIAN_EPOCH + week * 7; 423 } 424 425 /** 426 * Get first day of week as android.text.format.Time constant. 427 * 428 * @return the first day of week in android.text.format.Time 429 */ 430 public static int getFirstDayOfWeek(Context context) { 431 SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 432 String pref = prefs.getString( 433 GeneralPreferences.KEY_WEEK_START_DAY, GeneralPreferences.WEEK_START_DEFAULT); 434 435 int startDay; 436 if (GeneralPreferences.WEEK_START_DEFAULT.equals(pref)) { 437 startDay = Calendar.getInstance().getFirstDayOfWeek(); 438 } else { 439 startDay = Integer.parseInt(pref); 440 } 441 442 if (startDay == Calendar.SATURDAY) { 443 return Time.SATURDAY; 444 } else if (startDay == Calendar.MONDAY) { 445 return Time.MONDAY; 446 } else { 447 return Time.SUNDAY; 448 } 449 } 450 451 /** 452 * @return true when week number should be shown. 453 */ 454 public static boolean getShowWeekNumber(Context context) { 455 final SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 456 return prefs.getBoolean( 457 GeneralPreferences.KEY_SHOW_WEEK_NUM, GeneralPreferences.DEFAULT_SHOW_WEEK_NUM); 458 } 459 460 /** 461 * @return true when declined events should be hidden. 462 */ 463 public static boolean getHideDeclinedEvents(Context context) { 464 final SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 465 return prefs.getBoolean(GeneralPreferences.KEY_HIDE_DECLINED, false); 466 } 467 468 public static int getDaysPerWeek(Context context) { 469 final SharedPreferences prefs = GeneralPreferences.getSharedPreferences(context); 470 return prefs.getInt(GeneralPreferences.KEY_DAYS_PER_WEEK, 7); 471 } 472 473 /** 474 * Determine whether the column position is Saturday or not. 475 * 476 * @param column the column position 477 * @param firstDayOfWeek the first day of week in android.text.format.Time 478 * @return true if the column is Saturday position 479 */ 480 public static boolean isSaturday(int column, int firstDayOfWeek) { 481 return (firstDayOfWeek == Time.SUNDAY && column == 6) 482 || (firstDayOfWeek == Time.MONDAY && column == 5) 483 || (firstDayOfWeek == Time.SATURDAY && column == 0); 484 } 485 486 /** 487 * Determine whether the column position is Sunday or not. 488 * 489 * @param column the column position 490 * @param firstDayOfWeek the first day of week in android.text.format.Time 491 * @return true if the column is Sunday position 492 */ 493 public static boolean isSunday(int column, int firstDayOfWeek) { 494 return (firstDayOfWeek == Time.SUNDAY && column == 0) 495 || (firstDayOfWeek == Time.MONDAY && column == 6) 496 || (firstDayOfWeek == Time.SATURDAY && column == 1); 497 } 498 499 /** 500 * Convert given UTC time into current local time. This assumes it is for an 501 * allday event and will adjust the time to be on a midnight boundary. 502 * 503 * @param recycle Time object to recycle, otherwise null. 504 * @param utcTime Time to convert, in UTC. 505 * @param tz The time zone to convert this time to. 506 */ 507 public static long convertAlldayUtcToLocal(Time recycle, long utcTime, String tz) { 508 if (recycle == null) { 509 recycle = new Time(); 510 } 511 recycle.timezone = Time.TIMEZONE_UTC; 512 recycle.set(utcTime); 513 recycle.timezone = tz; 514 return recycle.normalize(true); 515 } 516 517 public static long convertAlldayLocalToUTC(Time recycle, long localTime, String tz) { 518 if (recycle == null) { 519 recycle = new Time(); 520 } 521 recycle.timezone = tz; 522 recycle.set(localTime); 523 recycle.timezone = Time.TIMEZONE_UTC; 524 return recycle.normalize(true); 525 } 526 527 /** 528 * Scan through a cursor of calendars and check if names are duplicated. 529 * This travels a cursor containing calendar display names and fills in the 530 * provided map with whether or not each name is repeated. 531 * 532 * @param isDuplicateName The map to put the duplicate check results in. 533 * @param cursor The query of calendars to check 534 * @param nameIndex The column of the query that contains the display name 535 */ 536 public static void checkForDuplicateNames( 537 Map<String, Boolean> isDuplicateName, Cursor cursor, int nameIndex) { 538 isDuplicateName.clear(); 539 cursor.moveToPosition(-1); 540 while (cursor.moveToNext()) { 541 String displayName = cursor.getString(nameIndex); 542 // Set it to true if we've seen this name before, false otherwise 543 if (displayName != null) { 544 isDuplicateName.put(displayName, isDuplicateName.containsKey(displayName)); 545 } 546 } 547 } 548 549 /** 550 * Null-safe object comparison 551 * 552 * @param s1 553 * @param s2 554 * @return 555 */ 556 public static boolean equals(Object o1, Object o2) { 557 return o1 == null ? o2 == null : o1.equals(o2); 558 } 559 560 public static void setAllowWeekForDetailView(boolean allowWeekView) { 561 mAllowWeekForDetailView = allowWeekView; 562 } 563 564 public static boolean getAllowWeekForDetailView() { 565 return mAllowWeekForDetailView; 566 } 567 568 public static boolean getConfigBool(Context c, int key) { 569 return c.getResources().getBoolean(key); 570 } 571 572 public static int getDisplayColorFromColor(int color) { 573 float[] hsv = new float[3]; 574 Color.colorToHSV(color, hsv); 575 hsv[1] = Math.max(hsv[1] - SATURATION_ADJUST, 0.0f); 576 return Color.HSVToColor(hsv); 577 } 578 579 // This takes a color and computes what it would look like blended with 580 // white. The result is the color that should be used for declined events. 581 public static int getDeclinedColorFromColor(int color) { 582 int bg = 0xffffffff; 583 int a = DECLINED_EVENT_ALPHA; 584 int r = (((color & 0x00ff0000) * a) + ((bg & 0x00ff0000) * (0xff - a))) & 0xff000000; 585 int g = (((color & 0x0000ff00) * a) + ((bg & 0x0000ff00) * (0xff - a))) & 0x00ff0000; 586 int b = (((color & 0x000000ff) * a) + ((bg & 0x000000ff) * (0xff - a))) & 0x0000ff00; 587 return (0xff000000) | ((r | g | b) >> 8); 588 } 589 590 // A single strand represents one color of events. Events are divided up by 591 // color to make them convenient to draw. The black strand is special in 592 // that it holds conflicting events as well as color settings for allday on 593 // each day. 594 public static class DNAStrand { 595 public float[] points; 596 public int[] allDays; // color for the allday, 0 means no event 597 int position; 598 public int color; 599 int count; 600 } 601 602 // A segment is a single continuous length of time occupied by a single 603 // color. Segments should never span multiple days. 604 private static class DNASegment { 605 int startMinute; // in minutes since the start of the week 606 int endMinute; 607 int color; // Calendar color or black for conflicts 608 int day; // quick reference to the day this segment is on 609 } 610 611 /** 612 * Converts a list of events to a list of segments to draw. Assumes list is 613 * ordered by start time of the events. The function processes events for a 614 * range of days from firstJulianDay to firstJulianDay + dayXs.length - 1. 615 * The algorithm goes over all the events and creates a set of segments 616 * ordered by start time. This list of segments is then converted into a 617 * HashMap of strands which contain the draw points and are organized by 618 * color. The strands can then be drawn by setting the paint color to each 619 * strand's color and calling drawLines on its set of points. The points are 620 * set up using the following parameters. 621 * <ul> 622 * <li>Events between midnight and WORK_DAY_START_MINUTES are compressed 623 * into the first 1/8th of the space between top and bottom.</li> 624 * <li>Events between WORK_DAY_END_MINUTES and the following midnight are 625 * compressed into the last 1/8th of the space between top and bottom</li> 626 * <li>Events between WORK_DAY_START_MINUTES and WORK_DAY_END_MINUTES use 627 * the remaining 3/4ths of the space</li> 628 * <li>All segments drawn will maintain at least minPixels height, except 629 * for conflicts in the first or last 1/8th, which may be smaller</li> 630 * </ul> 631 * 632 * @param firstJulianDay The julian day of the first day of events 633 * @param events A list of events sorted by start time 634 * @param top The lowest y value the dna should be drawn at 635 * @param bottom The highest y value the dna should be drawn at 636 * @param dayXs An array of x values to draw the dna at, one for each day 637 * @param conflictColor the color to use for conflicts 638 * @return 639 */ 640 public static HashMap<Integer, DNAStrand> createDNAStrands(int firstJulianDay, 641 ArrayList<Event> events, int top, int bottom, int minPixels, int[] dayXs, 642 Context context) { 643 644 if (!mMinutesLoaded) { 645 if (context == null) { 646 Log.wtf(TAG, "No context and haven't loaded parameters yet! Can't create DNA."); 647 } 648 Resources res = context.getResources(); 649 CONFLICT_COLOR = res.getColor(R.color.month_dna_conflict_time_color); 650 WORK_DAY_START_MINUTES = res.getInteger(R.integer.work_start_minutes); 651 WORK_DAY_END_MINUTES = res.getInteger(R.integer.work_end_minutes); 652 WORK_DAY_END_LENGTH = DAY_IN_MINUTES - WORK_DAY_END_MINUTES; 653 WORK_DAY_MINUTES = WORK_DAY_END_MINUTES - WORK_DAY_START_MINUTES; 654 mMinutesLoaded = true; 655 } 656 657 if (events == null || events.isEmpty() || dayXs == null || dayXs.length < 1 658 || bottom - top < 8 || minPixels < 0) { 659 Log.e(TAG, 660 "Bad values for createDNAStrands! events:" + events + " dayXs:" 661 + Arrays.toString(dayXs) + " bot-top:" + (bottom - top) + " minPixels:" 662 + minPixels); 663 return null; 664 } 665 666 LinkedList<DNASegment> segments = new LinkedList<DNASegment>(); 667 HashMap<Integer, DNAStrand> strands = new HashMap<Integer, DNAStrand>(); 668 // add a black strand by default, other colors will get added in 669 // the loop 670 DNAStrand blackStrand = new DNAStrand(); 671 blackStrand.color = CONFLICT_COLOR; 672 strands.put(CONFLICT_COLOR, blackStrand); 673 // the min length is the number of minutes that will occupy 674 // MIN_SEGMENT_PIXELS in the 'work day' time slot. This computes the 675 // minutes/pixel * minpx where the number of pixels are 3/4 the total 676 // dna height: 4*(mins/(px * 3/4)) 677 int minMinutes = minPixels * 4 * WORK_DAY_MINUTES / (3 * (bottom - top)); 678 679 // There are slightly fewer than half as many pixels in 1/6 the space, 680 // so round to 2.5x for the min minutes in the non-work area 681 int minOtherMinutes = minMinutes * 5 / 2; 682 int lastJulianDay = firstJulianDay + dayXs.length - 1; 683 684 Event event = new Event(); 685 // Go through all the events for the week 686 for (Event currEvent : events) { 687 // if this event is outside the weeks range skip it 688 if (currEvent.endDay < firstJulianDay || currEvent.startDay > lastJulianDay) { 689 continue; 690 } 691 if (currEvent.drawAsAllday()) { 692 addAllDayToStrands(currEvent, strands, firstJulianDay, dayXs.length); 693 continue; 694 } 695 // Copy the event over so we can clip its start and end to our range 696 currEvent.copyTo(event); 697 if (event.startDay < firstJulianDay) { 698 event.startDay = firstJulianDay; 699 event.startTime = 0; 700 } 701 // If it starts after the work day make sure the start is at least 702 // minPixels from midnight 703 if (event.startTime > DAY_IN_MINUTES - minOtherMinutes) { 704 event.startTime = DAY_IN_MINUTES - minOtherMinutes; 705 } 706 if (event.endDay > lastJulianDay) { 707 event.endDay = lastJulianDay; 708 event.endTime = DAY_IN_MINUTES - 1; 709 } 710 // If the end time is before the work day make sure it ends at least 711 // minPixels after midnight 712 if (event.endTime < minOtherMinutes) { 713 event.endTime = minOtherMinutes; 714 } 715 // If the start and end are on the same day make sure they are at 716 // least minPixels apart. This only needs to be done for times 717 // outside the work day as the min distance for within the work day 718 // is enforced in the segment code. 719 if (event.startDay == event.endDay && 720 event.endTime - event.startTime < minOtherMinutes) { 721 // If it's less than minPixels in an area before the work 722 // day 723 if (event.startTime < WORK_DAY_START_MINUTES) { 724 // extend the end to the first easy guarantee that it's 725 // minPixels 726 event.endTime = Math.min(event.startTime + minOtherMinutes, 727 WORK_DAY_START_MINUTES + minMinutes); 728 // if it's in the area after the work day 729 } else if (event.endTime > WORK_DAY_END_MINUTES) { 730 // First try shifting the end but not past midnight 731 event.endTime = Math.min(event.endTime + minOtherMinutes, DAY_IN_MINUTES - 1); 732 // if it's still too small move the start back 733 if (event.endTime - event.startTime < minOtherMinutes) { 734 event.startTime = event.endTime - minOtherMinutes; 735 } 736 } 737 } 738 739 // This handles adding the first segment 740 if (segments.size() == 0) { 741 addNewSegment(segments, event, strands, firstJulianDay, 0, minMinutes); 742 continue; 743 } 744 // Now compare our current start time to the end time of the last 745 // segment in the list 746 DNASegment lastSegment = segments.getLast(); 747 int startMinute = (event.startDay - firstJulianDay) * DAY_IN_MINUTES + event.startTime; 748 int endMinute = Math.max((event.endDay - firstJulianDay) * DAY_IN_MINUTES 749 + event.endTime, startMinute + minMinutes); 750 751 if (startMinute < 0) { 752 startMinute = 0; 753 } 754 if (endMinute >= WEEK_IN_MINUTES) { 755 endMinute = WEEK_IN_MINUTES - 1; 756 } 757 // If we start before the last segment in the list ends we need to 758 // start going through the list as this may conflict with other 759 // events 760 if (startMinute < lastSegment.endMinute) { 761 int i = segments.size(); 762 // find the last segment this event intersects with 763 while (--i >= 0 && endMinute < segments.get(i).startMinute); 764 765 DNASegment currSegment; 766 // for each segment this event intersects with 767 for (; i >= 0 && startMinute <= (currSegment = segments.get(i)).endMinute; i--) { 768 // if the segment is already a conflict ignore it 769 if (currSegment.color == CONFLICT_COLOR) { 770 continue; 771 } 772 // if the event ends before the segment and wouldn't create 773 // a segment that is too small split off the right side 774 if (endMinute < currSegment.endMinute - minMinutes) { 775 DNASegment rhs = new DNASegment(); 776 rhs.endMinute = currSegment.endMinute; 777 rhs.color = currSegment.color; 778 rhs.startMinute = endMinute + 1; 779 rhs.day = currSegment.day; 780 currSegment.endMinute = endMinute; 781 segments.add(i + 1, rhs); 782 strands.get(rhs.color).count++; 783 if (DEBUG) { 784 Log.d(TAG, "Added rhs, curr:" + currSegment.toString() + " i:" 785 + segments.get(i).toString()); 786 } 787 } 788 // if the event starts after the segment and wouldn't create 789 // a segment that is too small split off the left side 790 if (startMinute > currSegment.startMinute + minMinutes) { 791 DNASegment lhs = new DNASegment(); 792 lhs.startMinute = currSegment.startMinute; 793 lhs.color = currSegment.color; 794 lhs.endMinute = startMinute - 1; 795 lhs.day = currSegment.day; 796 currSegment.startMinute = startMinute; 797 // increment i so that we are at the right position when 798 // referencing the segments to the right and left of the 799 // current segment. 800 segments.add(i++, lhs); 801 strands.get(lhs.color).count++; 802 if (DEBUG) { 803 Log.d(TAG, "Added lhs, curr:" + currSegment.toString() + " i:" 804 + segments.get(i).toString()); 805 } 806 } 807 // if the right side is black merge this with the segment to 808 // the right if they're on the same day and overlap 809 if (i + 1 < segments.size()) { 810 DNASegment rhs = segments.get(i + 1); 811 if (rhs.color == CONFLICT_COLOR && currSegment.day == rhs.day 812 && rhs.startMinute <= currSegment.endMinute + 1) { 813 rhs.startMinute = Math.min(currSegment.startMinute, rhs.startMinute); 814 segments.remove(currSegment); 815 strands.get(currSegment.color).count--; 816 // point at the new current segment 817 currSegment = rhs; 818 } 819 } 820 // if the left side is black merge this with the segment to 821 // the left if they're on the same day and overlap 822 if (i - 1 >= 0) { 823 DNASegment lhs = segments.get(i - 1); 824 if (lhs.color == CONFLICT_COLOR && currSegment.day == lhs.day 825 && lhs.endMinute >= currSegment.startMinute - 1) { 826 lhs.endMinute = Math.max(currSegment.endMinute, lhs.endMinute); 827 segments.remove(currSegment); 828 strands.get(currSegment.color).count--; 829 // point at the new current segment 830 currSegment = lhs; 831 // point i at the new current segment in case new 832 // code is added 833 i--; 834 } 835 } 836 // if we're still not black, decrement the count for the 837 // color being removed, change this to black, and increment 838 // the black count 839 if (currSegment.color != CONFLICT_COLOR) { 840 strands.get(currSegment.color).count--; 841 currSegment.color = CONFLICT_COLOR; 842 strands.get(CONFLICT_COLOR).count++; 843 } 844 } 845 846 } 847 // If this event extends beyond the last segment add a new segment 848 if (endMinute > lastSegment.endMinute) { 849 addNewSegment(segments, event, strands, firstJulianDay, lastSegment.endMinute, 850 minMinutes); 851 } 852 } 853 weaveDNAStrands(segments, firstJulianDay, strands, top, bottom, dayXs); 854 return strands; 855 } 856 857 // This figures out allDay colors as allDay events are found 858 private static void addAllDayToStrands(Event event, HashMap<Integer, DNAStrand> strands, 859 int firstJulianDay, int numDays) { 860 DNAStrand strand = getOrCreateStrand(strands, CONFLICT_COLOR); 861 // if we haven't initialized the allDay portion create it now 862 if (strand.allDays == null) { 863 strand.allDays = new int[numDays]; 864 } 865 866 // For each day this event is on update the color 867 int end = Math.min(event.endDay - firstJulianDay, numDays - 1); 868 for (int i = Math.max(event.startDay - firstJulianDay, 0); i <= end; i++) { 869 if (strand.allDays[i] != 0) { 870 // if this day already had a color, it is now a conflict 871 strand.allDays[i] = CONFLICT_COLOR; 872 } else { 873 // else it's just the color of the event 874 strand.allDays[i] = event.color; 875 } 876 } 877 } 878 879 // This processes all the segments, sorts them by color, and generates a 880 // list of points to draw 881 private static void weaveDNAStrands(LinkedList<DNASegment> segments, int firstJulianDay, 882 HashMap<Integer, DNAStrand> strands, int top, int bottom, int[] dayXs) { 883 // First, get rid of any colors that ended up with no segments 884 Iterator<DNAStrand> strandIterator = strands.values().iterator(); 885 while (strandIterator.hasNext()) { 886 DNAStrand strand = strandIterator.next(); 887 if (strand.count < 1 && strand.allDays == null) { 888 strandIterator.remove(); 889 continue; 890 } 891 strand.points = new float[strand.count * 4]; 892 strand.position = 0; 893 } 894 // Go through each segment and compute its points 895 for (DNASegment segment : segments) { 896 // Add the points to the strand of that color 897 DNAStrand strand = strands.get(segment.color); 898 int dayIndex = segment.day - firstJulianDay; 899 int dayStartMinute = segment.startMinute % DAY_IN_MINUTES; 900 int dayEndMinute = segment.endMinute % DAY_IN_MINUTES; 901 int height = bottom - top; 902 int workDayHeight = height * 3 / 4; 903 int remainderHeight = (height - workDayHeight) / 2; 904 905 int x = dayXs[dayIndex]; 906 int y0 = 0; 907 int y1 = 0; 908 909 y0 = top + getPixelOffsetFromMinutes(dayStartMinute, workDayHeight, remainderHeight); 910 y1 = top + getPixelOffsetFromMinutes(dayEndMinute, workDayHeight, remainderHeight); 911 if (DEBUG) { 912 Log.d(TAG, "Adding " + Integer.toHexString(segment.color) + " at x,y0,y1: " + x 913 + " " + y0 + " " + y1 + " for " + dayStartMinute + " " + dayEndMinute); 914 } 915 strand.points[strand.position++] = x; 916 strand.points[strand.position++] = y0; 917 strand.points[strand.position++] = x; 918 strand.points[strand.position++] = y1; 919 } 920 } 921 922 /** 923 * Compute a pixel offset from the top for a given minute from the work day 924 * height and the height of the top area. 925 */ 926 private static int getPixelOffsetFromMinutes(int minute, int workDayHeight, 927 int remainderHeight) { 928 int y; 929 if (minute < WORK_DAY_START_MINUTES) { 930 y = minute * remainderHeight / WORK_DAY_START_MINUTES; 931 } else if (minute < WORK_DAY_END_MINUTES) { 932 y = remainderHeight + (minute - WORK_DAY_START_MINUTES) * workDayHeight 933 / WORK_DAY_MINUTES; 934 } else { 935 y = remainderHeight + workDayHeight + (minute - WORK_DAY_END_MINUTES) * remainderHeight 936 / WORK_DAY_END_LENGTH; 937 } 938 return y; 939 } 940 941 /** 942 * Add a new segment based on the event provided. This will handle splitting 943 * segments across day boundaries and ensures a minimum size for segments. 944 */ 945 private static void addNewSegment(LinkedList<DNASegment> segments, Event event, 946 HashMap<Integer, DNAStrand> strands, int firstJulianDay, int minStart, int minMinutes) { 947 if (event.startDay > event.endDay) { 948 Log.wtf(TAG, "Event starts after it ends: " + event.toString()); 949 } 950 // If this is a multiday event split it up by day 951 if (event.startDay != event.endDay) { 952 Event lhs = new Event(); 953 lhs.color = event.color; 954 lhs.startDay = event.startDay; 955 // the first day we want the start time to be the actual start time 956 lhs.startTime = event.startTime; 957 lhs.endDay = lhs.startDay; 958 lhs.endTime = DAY_IN_MINUTES - 1; 959 // Nearly recursive iteration! 960 while (lhs.startDay != event.endDay) { 961 addNewSegment(segments, lhs, strands, firstJulianDay, minStart, minMinutes); 962 // The days in between are all day, even though that shouldn't 963 // actually happen due to the allday filtering 964 lhs.startDay++; 965 lhs.endDay = lhs.startDay; 966 lhs.startTime = 0; 967 minStart = 0; 968 } 969 // The last day we want the end time to be the actual end time 970 lhs.endTime = event.endTime; 971 event = lhs; 972 } 973 // Create the new segment and compute its fields 974 DNASegment segment = new DNASegment(); 975 int dayOffset = (event.startDay - firstJulianDay) * DAY_IN_MINUTES; 976 int endOfDay = dayOffset + DAY_IN_MINUTES - 1; 977 // clip the start if needed 978 segment.startMinute = Math.max(dayOffset + event.startTime, minStart); 979 // and extend the end if it's too small, but not beyond the end of the 980 // day 981 int minEnd = Math.min(segment.startMinute + minMinutes, endOfDay); 982 segment.endMinute = Math.max(dayOffset + event.endTime, minEnd); 983 if (segment.endMinute > endOfDay) { 984 segment.endMinute = endOfDay; 985 } 986 987 segment.color = event.color; 988 segment.day = event.startDay; 989 segments.add(segment); 990 // increment the count for the correct color or add a new strand if we 991 // don't have that color yet 992 DNAStrand strand = getOrCreateStrand(strands, segment.color); 993 strand.count++; 994 } 995 996 /** 997 * Try to get a strand of the given color. Create it if it doesn't exist. 998 */ 999 private static DNAStrand getOrCreateStrand(HashMap<Integer, DNAStrand> strands, int color) { 1000 DNAStrand strand = strands.get(color); 1001 if (strand == null) { 1002 strand = new DNAStrand(); 1003 strand.color = color; 1004 strand.count = 0; 1005 strands.put(strand.color, strand); 1006 } 1007 return strand; 1008 } 1009 1010 /** 1011 * Sends an intent to launch the top level Calendar view. 1012 * 1013 * @param context 1014 */ 1015 public static void returnToCalendarHome(Context context) { 1016 Intent launchIntent = new Intent(context, AllInOneActivity.class); 1017 launchIntent.setAction(Intent.ACTION_DEFAULT); 1018 launchIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 1019 launchIntent.putExtra(INTENT_KEY_HOME, true); 1020 context.startActivity(launchIntent); 1021 } 1022 1023 /** 1024 * This sets up a search view to use Calendar's search suggestions provider 1025 * and to allow refining the search. 1026 * 1027 * @param view The {@link SearchView} to set up 1028 * @param act The activity using the view 1029 */ 1030 public static void setUpSearchView(SearchView view, Activity act) { 1031 SearchManager searchManager = (SearchManager) act.getSystemService(Context.SEARCH_SERVICE); 1032 view.setSearchableInfo(searchManager.getSearchableInfo(act.getComponentName())); 1033 view.setQueryRefinementEnabled(true); 1034 } 1035 1036 /** 1037 * Given a context and a time in millis since unix epoch figures out the 1038 * correct week of the year for that time. 1039 * 1040 * @param millisSinceEpoch 1041 * @return 1042 */ 1043 public static int getWeekNumberFromTime(long millisSinceEpoch, Context context) { 1044 Time weekTime = new Time(getTimeZone(context, null)); 1045 weekTime.set(millisSinceEpoch); 1046 weekTime.normalize(true); 1047 int firstDayOfWeek = getFirstDayOfWeek(context); 1048 // if the date is on Saturday or Sunday and the start of the week 1049 // isn't Monday we may need to shift the date to be in the correct 1050 // week 1051 if (weekTime.weekDay == Time.SUNDAY 1052 && (firstDayOfWeek == Time.SUNDAY || firstDayOfWeek == Time.SATURDAY)) { 1053 weekTime.monthDay++; 1054 weekTime.normalize(true); 1055 } else if (weekTime.weekDay == Time.SATURDAY && firstDayOfWeek == Time.SATURDAY) { 1056 weekTime.monthDay += 2; 1057 weekTime.normalize(true); 1058 } 1059 return weekTime.getWeekNumber(); 1060 } 1061 1062 /** 1063 * Formats a day of the week string. This is either just the name of the day 1064 * or a combination of yesterday/today/tomorrow and the day of the week. 1065 * 1066 * @param julianDay The julian day to get the string for 1067 * @param todayJulianDay The julian day for today's date 1068 * @param millis A utc millis since epoch time that falls on julian day 1069 * @param context The calling context, used to get the timezone and do the 1070 * formatting 1071 * @return 1072 */ 1073 public static String getDayOfWeekString(int julianDay, int todayJulianDay, long millis, 1074 Context context) { 1075 getTimeZone(context, null); 1076 int flags = DateUtils.FORMAT_SHOW_WEEKDAY; 1077 String dayViewText; 1078 if (julianDay == todayJulianDay) { 1079 dayViewText = context.getString(R.string.agenda_today, 1080 mTZUtils.formatDateRange(context, millis, millis, flags).toString()); 1081 } else if (julianDay == todayJulianDay - 1) { 1082 dayViewText = context.getString(R.string.agenda_yesterday, 1083 mTZUtils.formatDateRange(context, millis, millis, flags).toString()); 1084 } else if (julianDay == todayJulianDay + 1) { 1085 dayViewText = context.getString(R.string.agenda_tomorrow, 1086 mTZUtils.formatDateRange(context, millis, millis, flags).toString()); 1087 } else { 1088 dayViewText = mTZUtils.formatDateRange(context, millis, millis, flags).toString(); 1089 } 1090 dayViewText = dayViewText.toUpperCase(); 1091 return dayViewText; 1092 } 1093} 1094