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Sunny Goyal4c7f2152017-10-17 17:17:16 -07001/*
2 * Copyright (C) 2017 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 */
16package com.android.launcher3;
17
Sunny Goyal210e1742019-10-17 12:05:38 -070018import static com.android.launcher3.anim.Interpolators.ACCEL_2;
Pat Manningb04dd602022-03-09 14:19:10 +000019import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
Winson Chungf9935182020-10-23 09:26:44 -070020import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_HOME;
Tony Wickhamc5d168d2021-03-25 09:28:19 -070021import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_OVERVIEW;
vadimtf6ef8792022-07-26 13:54:31 -070022import static com.android.launcher3.testing.shared.TestProtocol.ALL_APPS_STATE_ORDINAL;
23import static com.android.launcher3.testing.shared.TestProtocol.BACKGROUND_APP_STATE_ORDINAL;
24import static com.android.launcher3.testing.shared.TestProtocol.HINT_STATE_ORDINAL;
25import static com.android.launcher3.testing.shared.TestProtocol.HINT_STATE_TWO_BUTTON_ORDINAL;
26import static com.android.launcher3.testing.shared.TestProtocol.NORMAL_STATE_ORDINAL;
27import static com.android.launcher3.testing.shared.TestProtocol.OVERVIEW_MODAL_TASK_STATE_ORDINAL;
28import static com.android.launcher3.testing.shared.TestProtocol.OVERVIEW_SPLIT_SELECT_ORDINAL;
29import static com.android.launcher3.testing.shared.TestProtocol.OVERVIEW_STATE_ORDINAL;
30import static com.android.launcher3.testing.shared.TestProtocol.QUICK_SWITCH_STATE_ORDINAL;
31import static com.android.launcher3.testing.shared.TestProtocol.SPRING_LOADED_STATE_ORDINAL;
Sunny Goyal0c723352017-12-12 12:02:29 -080032
Winson Chung8687bc22020-02-27 23:34:24 -080033import android.content.Context;
Zak Cohen4d35ac32021-04-23 16:28:12 -070034import android.graphics.Color;
Sunny Goyal0c723352017-12-12 12:02:29 -080035import android.view.animation.Interpolator;
Sunny Goyalbe93f262017-10-20 17:05:27 -070036
Sunny Goyal35e7d382020-05-08 13:37:58 -070037import com.android.launcher3.statemanager.BaseState;
38import com.android.launcher3.statemanager.StateManager;
Tony Wickham4fdba142019-11-04 16:23:51 -080039import com.android.launcher3.states.HintState;
Sunny Goyalc99cb172017-10-19 16:15:09 -070040import com.android.launcher3.states.SpringLoadedState;
vadimtf6ef8792022-07-26 13:54:31 -070041import com.android.launcher3.testing.shared.TestProtocol;
Tonye06fef42019-03-22 15:44:28 -050042import com.android.launcher3.uioverrides.states.AllAppsState;
43import com.android.launcher3.uioverrides.states.OverviewState;
Sunny Goyal54fa1102022-12-07 22:48:37 -080044import com.android.launcher3.views.ActivityContext;
Sunny Goyal4c7f2152017-10-17 17:17:16 -070045
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -070046import java.util.Arrays;
47
Sunny Goyal4c7f2152017-10-17 17:17:16 -070048/**
Sunny Goyalbe93f262017-10-20 17:05:27 -070049 * Base state for various states used for the Launcher
Sunny Goyal4c7f2152017-10-17 17:17:16 -070050 */
Sunny Goyal35e7d382020-05-08 13:37:58 -070051public abstract class LauncherState implements BaseState<LauncherState> {
Sunny Goyal4c7f2152017-10-17 17:17:16 -070052
Sunny Goyal7185dd62018-03-14 17:51:49 -070053 /**
54 * Set of elements indicating various workspace elements which change visibility across states
55 * Note that workspace is not included here as in that case, we animate individual pages
56 */
57 public static final int NONE = 0;
Tony Wickhambd6f05e2018-03-21 08:16:33 -070058 public static final int HOTSEAT_ICONS = 1 << 0;
Sunny Goyalc373e1c2021-03-09 17:27:53 -080059 public static final int ALL_APPS_CONTENT = 1 << 1;
60 public static final int VERTICAL_SWIPE_INDICATOR = 1 << 2;
61 public static final int OVERVIEW_ACTIONS = 1 << 3;
Tony Wickham7af54402021-12-06 15:54:43 -080062 public static final int CLEAR_ALL_BUTTON = 1 << 4;
63 public static final int WORKSPACE_PAGE_INDICATOR = 1 << 5;
64 public static final int SPLIT_PLACHOLDER_VIEW = 1 << 6;
Zak Cohen43a16152020-02-25 14:29:37 -080065
Sunny Goyal8f965462020-04-23 19:00:36 -070066 // Flag indicating workspace has multiple pages visible.
Sunny Goyal35e7d382020-05-08 13:37:58 -070067 public static final int FLAG_MULTI_PAGE = BaseState.getFlag(0);
Sunny Goyal8f965462020-04-23 19:00:36 -070068 // Flag indicating that workspace and its contents are not accessible
Sunny Goyal35e7d382020-05-08 13:37:58 -070069 public static final int FLAG_WORKSPACE_INACCESSIBLE = BaseState.getFlag(1);
Sunny Goyal8f965462020-04-23 19:00:36 -070070
Sunny Goyal8f965462020-04-23 19:00:36 -070071 // Flag indicating the state allows workspace icons to be dragged.
Sunny Goyal35e7d382020-05-08 13:37:58 -070072 public static final int FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED = BaseState.getFlag(2);
Sunny Goyal8f965462020-04-23 19:00:36 -070073 // Flag to indicate that workspace should draw page background
Sunny Goyal35e7d382020-05-08 13:37:58 -070074 public static final int FLAG_WORKSPACE_HAS_BACKGROUNDS = BaseState.getFlag(3);
Sunny Goyal8f965462020-04-23 19:00:36 -070075 // Flag to indicate if the state would have scrim over sysui region: statu sbar and nav bar
Sunny Goyal1eb11242022-09-09 17:14:45 -070076 public static final int FLAG_HAS_SYS_UI_SCRIM = BaseState.getFlag(4);
Sunny Goyal8f965462020-04-23 19:00:36 -070077 // Flag to inticate that all popups should be closed when this state is enabled.
Sunny Goyal1eb11242022-09-09 17:14:45 -070078 public static final int FLAG_CLOSE_POPUPS = BaseState.getFlag(5);
79 public static final int FLAG_OVERVIEW_UI = BaseState.getFlag(6);
Sunny Goyal8f965462020-04-23 19:00:36 -070080
Anushree Ganjamf6254c52022-04-29 00:46:22 +000081 // Flag indicating that hotseat and its contents are not accessible.
Sunny Goyal1eb11242022-09-09 17:14:45 -070082 public static final int FLAG_HOTSEAT_INACCESSIBLE = BaseState.getFlag(7);
Anushree Ganjamf6254c52022-04-29 00:46:22 +000083
Sunny Goyal6c6c2f42018-03-02 14:57:46 -080084
Sunny Goyalf2393f12020-04-01 20:13:12 -070085 public static final float NO_OFFSET = 0;
86 public static final float NO_SCALE = 1;
87
Sunny Goyal0c723352017-12-12 12:02:29 -080088 protected static final PageAlphaProvider DEFAULT_ALPHA_PROVIDER =
89 new PageAlphaProvider(ACCEL_2) {
90 @Override
91 public float getPageAlpha(int pageIndex) {
92 return 1;
93 }
94 };
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -070095
Pat Manningb04dd602022-03-09 14:19:10 +000096 protected static final PageTranslationProvider DEFAULT_PAGE_TRANSLATION_PROVIDER =
97 new PageTranslationProvider(DEACCEL_2) {
98 @Override
99 public float getPageTranslation(int pageIndex) {
100 return 0;
101 }
102 };
103
Tony Wickhamc5d168d2021-03-25 09:28:19 -0700104 private static final LauncherState[] sAllStates = new LauncherState[10];
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -0700105
Sunny Goyal75c59ac2018-01-15 14:23:11 -0800106 /**
107 * TODO: Create a separate class for NORMAL state.
108 */
vadimt6895e402019-02-15 16:42:14 -0800109 public static final LauncherState NORMAL = new LauncherState(NORMAL_STATE_ORDINAL,
Winson Chungf9935182020-10-23 09:26:44 -0700110 LAUNCHER_STATE_HOME,
Sunny Goyal1eb11242022-09-09 17:14:45 -0700111 FLAG_DISABLE_RESTORE | FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED | FLAG_HAS_SYS_UI_SCRIM) {
Tony Wickhamc7203ad2020-02-03 18:36:06 -0800112 @Override
Alex Chauf39cc122022-04-14 17:51:59 +0100113 public int getTransitionDuration(Context context, boolean isToState) {
Tony Wickhamc7203ad2020-02-03 18:36:06 -0800114 // Arbitrary duration, when going to NORMAL we use the state we're coming from instead.
115 return 0;
116 }
117 };
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -0700118
Sunny Goyal7185dd62018-03-14 17:51:49 -0700119 /**
120 * Various Launcher states arranged in the increasing order of UI layers
121 */
vadimt2a648aa2019-02-14 17:47:11 -0800122 public static final LauncherState SPRING_LOADED = new SpringLoadedState(
123 SPRING_LOADED_STATE_ORDINAL);
vadimt2a648aa2019-02-14 17:47:11 -0800124 public static final LauncherState ALL_APPS = new AllAppsState(ALL_APPS_STATE_ORDINAL);
Tony Wickham4fdba142019-11-04 16:23:51 -0800125 public static final LauncherState HINT_STATE = new HintState(HINT_STATE_ORDINAL);
Tony Wickhamc5d168d2021-03-25 09:28:19 -0700126 public static final LauncherState HINT_STATE_TWO_BUTTON = new HintState(
127 HINT_STATE_TWO_BUTTON_ORDINAL, LAUNCHER_STATE_OVERVIEW);
Tony1787ee92019-03-20 12:38:35 -0500128
129 public static final LauncherState OVERVIEW = new OverviewState(OVERVIEW_STATE_ORDINAL);
Zak Cohena39544d2020-04-27 16:26:55 -0700130 public static final LauncherState OVERVIEW_MODAL_TASK = OverviewState.newModalTaskState(
131 OVERVIEW_MODAL_TASK_STATE_ORDINAL);
Tonye4c2e2b2019-03-25 10:23:39 -0500132 public static final LauncherState QUICK_SWITCH =
133 OverviewState.newSwitchState(QUICK_SWITCH_STATE_ORDINAL);
Tony1787ee92019-03-20 12:38:35 -0500134 public static final LauncherState BACKGROUND_APP =
135 OverviewState.newBackgroundState(BACKGROUND_APP_STATE_ORDINAL);
Vinit Nayakd987a822021-02-22 14:49:27 -0800136 public static final LauncherState OVERVIEW_SPLIT_SELECT =
137 OverviewState.newSplitSelectState(OVERVIEW_SPLIT_SELECT_ORDINAL);
Tony Wickham6becf7c2018-04-19 11:39:34 -0700138
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -0700139 public final int ordinal;
140
Sunny Goyalf9403d92017-10-18 10:55:56 -0700141 /**
Winson Chungf9935182020-10-23 09:26:44 -0700142 * Used for {@link com.android.launcher3.logging.StatsLogManager}
Sunny Goyalf9403d92017-10-18 10:55:56 -0700143 */
Winson Chungf9935182020-10-23 09:26:44 -0700144 public final int statsLogOrdinal;
Sunny Goyal4c7f2152017-10-17 17:17:16 -0700145
Sunny Goyalf9403d92017-10-18 10:55:56 -0700146 /**
Sunny Goyal6c6c2f42018-03-02 14:57:46 -0800147 * True if the state has overview panel visible.
148 */
149 public final boolean overviewUi;
150
Sunny Goyal8f965462020-04-23 19:00:36 -0700151 private final int mFlags;
Sunny Goyal5d1873a2018-05-08 11:10:44 -0700152
Winson Chungf9935182020-10-23 09:26:44 -0700153 public LauncherState(int id, int statsLogOrdinal, int flags) {
154 this.statsLogOrdinal = statsLogOrdinal;
Sunny Goyal8f965462020-04-23 19:00:36 -0700155 this.mFlags = flags;
Sunny Goyal6c6c2f42018-03-02 14:57:46 -0800156 this.overviewUi = (flags & FLAG_OVERVIEW_UI) != 0;
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -0700157 this.ordinal = id;
158 sAllStates[id] = this;
159 }
160
Sunny Goyal8f965462020-04-23 19:00:36 -0700161 /**
162 * Returns if the state has the provided flag
163 */
Sunny Goyal35e7d382020-05-08 13:37:58 -0700164 @Override
Sunny Goyal8f965462020-04-23 19:00:36 -0700165 public final boolean hasFlag(int mask) {
166 return (mFlags & mask) != 0;
167 }
168
Sunny Goyalcd7c0aa2017-10-19 12:36:27 -0700169 public static LauncherState[] values() {
170 return Arrays.copyOf(sAllStates, sAllStates.length);
Sunny Goyal4c7f2152017-10-17 17:17:16 -0700171 }
Sunny Goyalc99cb172017-10-19 16:15:09 -0700172
Tonybc234402019-03-19 13:30:25 -0500173 public ScaleAndTranslation getWorkspaceScaleAndTranslation(Launcher launcher) {
Sunny Goyalf2393f12020-04-01 20:13:12 -0700174 return new ScaleAndTranslation(NO_SCALE, NO_OFFSET, NO_OFFSET);
Sunny Goyalc99cb172017-10-19 16:15:09 -0700175 }
176
Tonybc234402019-03-19 13:30:25 -0500177 public ScaleAndTranslation getHotseatScaleAndTranslation(Launcher launcher) {
Tony Wickham57e489c2019-03-04 14:57:07 -0800178 // For most states, treat the hotseat as if it were part of the workspace.
179 return getWorkspaceScaleAndTranslation(launcher);
Tony4bb4b892019-03-03 15:32:12 -0800180 }
181
Sunny Goyalf2393f12020-04-01 20:13:12 -0700182 /**
Tony Wickham82d5a062021-05-14 14:37:12 -0700183 * Returns an array of two elements.
Samuel Fufa2ea01e42020-12-02 13:48:18 -0600184 * The first specifies the scale for the overview
185 * The second is the factor ([0, 1], 0 => center-screen; 1 => offscreen) by which overview
186 * should be shifted horizontally.
Sunny Goyalf2393f12020-04-01 20:13:12 -0700187 */
188 public float[] getOverviewScaleAndOffset(Launcher launcher) {
189 return launcher.getNormalOverviewScaleAndOffset();
Tony3bb5e8e2018-03-14 12:05:00 +0000190 }
191
Tony54068172019-05-12 13:24:51 -0500192 public float getOverviewFullscreenProgress() {
193 return 0;
194 }
195
Sunny Goyal7185dd62018-03-14 17:51:49 -0700196 public int getVisibleElements(Launcher launcher) {
Tony Wickham7af54402021-12-06 15:54:43 -0800197 return HOTSEAT_ICONS | WORKSPACE_PAGE_INDICATOR | VERTICAL_SWIPE_INDICATOR;
Sunny Goyal7185dd62018-03-14 17:51:49 -0700198 }
199
Sunny Goyal228153d2018-01-04 15:35:22 -0800200 /**
Tony Wickhama29a0462021-03-02 12:28:25 -0800201 * A shorthand for checking getVisibleElements() & elements == elements.
202 * @return Whether all of the given elements are visible.
203 */
204 public boolean areElementsVisible(Launcher launcher, int elements) {
205 return (getVisibleElements(launcher) & elements) == elements;
206 }
207
Schneider Victor-tulias3f6c4732022-06-23 11:25:10 -0700208 /**
209 * Returns whether taskbar is stashed and thus should either:
210 * 1) replace hotseat or taskbar icons with a handle in gesture navigation mode or
211 * 2) fade out the hotseat or taskbar icons in 3-button navigation mode.
212 */
Tony Wickham24675d32021-11-24 15:43:52 -0800213 public boolean isTaskbarStashed(Launcher launcher) {
Tracy Zhou308851d2021-09-09 21:18:25 -0700214 return false;
215 }
216
Tony Wickham24675d32021-11-24 15:43:52 -0800217 /** Returns whether taskbar is aligned with the hotseat vs position inside apps */
218 public boolean isTaskbarAlignedWithHotseat(Launcher launcher) {
Schneider Victor-tulias3f6c4732022-06-23 11:25:10 -0700219 return true;
Tony Wickham24675d32021-11-24 15:43:52 -0800220 }
221
Tony Wickhama29a0462021-03-02 12:28:25 -0800222 /**
Sunny Goyal228153d2018-01-04 15:35:22 -0800223 * Fraction shift in the vertical translation UI and related properties
224 *
225 * @see com.android.launcher3.allapps.AllAppsTransitionController
226 */
227 public float getVerticalProgress(Launcher launcher) {
228 return 1f;
229 }
230
Sunny Goyalc82916f2021-04-06 13:03:54 -0700231 public float getWorkspaceBackgroundAlpha(Launcher launcher) {
Sunny Goyal927447e2018-05-04 13:19:29 -0700232 return 0;
233 }
234
Zak Cohen4d35ac32021-04-23 16:28:12 -0700235 /**
236 * What color should the workspace scrim be in when at rest in this state.
237 * Return {@link Color#TRANSPARENT} for no scrim.
238 */
239 public int getWorkspaceScrimColor(Launcher launcher) {
240 return Color.TRANSPARENT;
Tony Wickhamc0880512019-07-24 17:32:08 -0700241 }
242
Winson Chung8687bc22020-02-27 23:34:24 -0800243 /**
Zak Cohena39544d2020-04-27 16:26:55 -0700244 * For this state, how modal should over view been shown. 0 modalness means all tasks drawn,
245 * 1 modalness means the current task is show on its own.
246 */
247 public float getOverviewModalness() {
248 return 0;
249 }
250
251 /**
Vinit Nayakf4f0c4d2021-05-05 10:28:05 -0700252 * For this state, how much additional translation there should be for each of the
253 * child TaskViews. Note that the translation can be its primary or secondary dimension.
Vinit Nayakd987a822021-02-22 14:49:27 -0800254 */
Vinit Nayakf4f0c4d2021-05-05 10:28:05 -0700255 public float getSplitSelectTranslation(Launcher launcher) {
Vinit Nayakd987a822021-02-22 14:49:27 -0800256 return 0;
257 }
258
259 /**
Lucas Dupin4918ed32020-03-17 17:11:32 -0700260 * The amount of blur and wallpaper zoom to apply to the background of either the app
261 * or Launcher surface in this state. Should be a number between 0 and 1, inclusive.
262 *
263 * 0 means completely zoomed in, without blurs. 1 is zoomed out, with blurs.
Winson Chung8687bc22020-02-27 23:34:24 -0800264 */
Sunny Goyal54fa1102022-12-07 22:48:37 -0800265 public final <DEVICE_PROFILE_CONTEXT extends Context & ActivityContext>
Alex Chau31935222022-09-01 21:24:52 +0100266 float getDepth(DEVICE_PROFILE_CONTEXT context) {
Jon Miranda36d10152020-06-19 16:35:08 -0700267 return getDepth(context,
268 BaseDraggingActivity.fromContext(context).getDeviceProfile().isMultiWindowMode);
269 }
270
271 /**
272 * Returns the amount of blur and wallpaper zoom for this state with {@param isMultiWindowMode}.
Samuel Fufa2ea01e42020-12-02 13:48:18 -0600273 *
Jon Miranda36d10152020-06-19 16:35:08 -0700274 * @see #getDepth(Context).
275 */
Sunny Goyal54fa1102022-12-07 22:48:37 -0800276 public final <DEVICE_PROFILE_CONTEXT extends Context & ActivityContext>
Alex Chau31935222022-09-01 21:24:52 +0100277 float getDepth(DEVICE_PROFILE_CONTEXT context, boolean isMultiWindowMode) {
Jon Miranda36d10152020-06-19 16:35:08 -0700278 if (isMultiWindowMode) {
Winson Chungb330d6e2020-04-20 11:57:11 -0700279 return 0;
280 }
281 return getDepthUnchecked(context);
282 }
283
Sunny Goyal54fa1102022-12-07 22:48:37 -0800284 protected <DEVICE_PROFILE_CONTEXT extends Context & ActivityContext>
Alex Chau31935222022-09-01 21:24:52 +0100285 float getDepthUnchecked(DEVICE_PROFILE_CONTEXT context) {
Lucas Dupin4918ed32020-03-17 17:11:32 -0700286 return 0f;
Winson Chung8687bc22020-02-27 23:34:24 -0800287 }
288
Sunny Goyal3e3f44c2017-10-23 17:14:52 -0700289 public String getDescription(Launcher launcher) {
290 return launcher.getWorkspace().getCurrentPageDescription();
291 }
292
Sunny Goyalbc683e92017-12-06 10:25:07 -0800293 public PageAlphaProvider getWorkspacePageAlphaProvider(Launcher launcher) {
Jon Mirandae3832222020-07-06 15:38:38 -0700294 if ((this != NORMAL && this != HINT_STATE)
295 || !launcher.getDeviceProfile().shouldFadeAdjacentWorkspaceScreens()) {
Sunny Goyalbc683e92017-12-06 10:25:07 -0800296 return DEFAULT_ALPHA_PROVIDER;
297 }
Sunny Goyal228153d2018-01-04 15:35:22 -0800298 final int centerPage = launcher.getWorkspace().getNextPage();
Sunny Goyal0c723352017-12-12 12:02:29 -0800299 return new PageAlphaProvider(ACCEL_2) {
300 @Override
301 public float getPageAlpha(int pageIndex) {
Samuel Fufa2ea01e42020-12-02 13:48:18 -0600302 return pageIndex != centerPage ? 0 : 1f;
Sunny Goyal0c723352017-12-12 12:02:29 -0800303 }
304 };
Sunny Goyalbc683e92017-12-06 10:25:07 -0800305 }
306
Pat Manningb04dd602022-03-09 14:19:10 +0000307 /**
308 * Gets the translation provider for workspace pages.
309 */
310 public PageTranslationProvider getWorkspacePageTranslationProvider(Launcher launcher) {
311 if (this != SPRING_LOADED || !launcher.getDeviceProfile().isTwoPanels) {
312 return DEFAULT_PAGE_TRANSLATION_PROVIDER;
313 }
314 final float quarterPageSpacing = launcher.getWorkspace().getPageSpacing() / 4f;
315 return new PageTranslationProvider(DEACCEL_2) {
316 @Override
317 public float getPageTranslation(int pageIndex) {
318 boolean isRtl = launcher.getWorkspace().mIsRtl;
319 boolean isFirstPage = pageIndex % 2 == 0;
320 return ((isFirstPage && !isRtl) || (!isFirstPage && isRtl)) ? -quarterPageSpacing
321 : quarterPageSpacing;
322 }
323 };
324 }
325
Sunny Goyal35e7d382020-05-08 13:37:58 -0700326 @Override
Sunny Goyal49bcf342018-01-11 13:59:53 -0800327 public LauncherState getHistoryForState(LauncherState previousState) {
328 // No history is supported
329 return NORMAL;
330 }
331
Sunny Goyal35e7d382020-05-08 13:37:58 -0700332 @Override
333 public String toString() {
Tony Wickhamf844ee92020-05-27 15:41:32 -0500334 return TestProtocol.stateOrdinalToString(ordinal);
Sunny Goyal35e7d382020-05-08 13:37:58 -0700335 }
336
Sunny Goyale39690b2018-08-02 13:35:07 -0700337 public void onBackPressed(Launcher launcher) {
338 if (this != NORMAL) {
Sunny Goyal35e7d382020-05-08 13:37:58 -0700339 StateManager<LauncherState> lsm = launcher.getStateManager();
Sunny Goyale39690b2018-08-02 13:35:07 -0700340 LauncherState lastState = lsm.getLastState();
Sunny Goyale39690b2018-08-02 13:35:07 -0700341 lsm.goToState(lastState);
342 }
343 }
344
Sunny Goyal0c723352017-12-12 12:02:29 -0800345 public static abstract class PageAlphaProvider {
Sunny Goyalbc683e92017-12-06 10:25:07 -0800346
Sunny Goyal0c723352017-12-12 12:02:29 -0800347 public final Interpolator interpolator;
348
349 public PageAlphaProvider(Interpolator interpolator) {
350 this.interpolator = interpolator;
351 }
352
353 public abstract float getPageAlpha(int pageIndex);
Sunny Goyalbc683e92017-12-06 10:25:07 -0800354 }
Tonybc234402019-03-19 13:30:25 -0500355
Pat Manningb04dd602022-03-09 14:19:10 +0000356 /**
357 * Provider for the translation and animation interpolation of workspace pages.
358 */
359 public abstract static class PageTranslationProvider {
360
361 public final Interpolator interpolator;
362
363 public PageTranslationProvider(Interpolator interpolator) {
364 this.interpolator = interpolator;
365 }
366
367 /**
368 * Gets the translation of the workspace page at the provided page index.
369 */
370 public abstract float getPageTranslation(int pageIndex);
371 }
372
Tonybc234402019-03-19 13:30:25 -0500373 public static class ScaleAndTranslation {
374 public float scale;
375 public float translationX;
376 public float translationY;
377
378 public ScaleAndTranslation(float scale, float translationX, float translationY) {
379 this.scale = scale;
380 this.translationX = translationX;
381 this.translationY = translationY;
382 }
383 }
Sunny Goyal4c7f2152017-10-17 17:17:16 -0700384}