Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | |
| 17 | package com.android.launcher3; |
| 18 | |
| 19 | import android.animation.Animator; |
| 20 | import android.animation.AnimatorListenerAdapter; |
| 21 | import android.animation.AnimatorSet; |
| 22 | import android.animation.TimeInterpolator; |
| 23 | import android.animation.ValueAnimator; |
| 24 | import android.content.Context; |
| 25 | import android.content.res.Resources; |
| 26 | import android.view.View; |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 27 | import android.view.ViewGroup; |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 28 | import android.view.accessibility.AccessibilityManager; |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 29 | import android.view.accessibility.AccessibilityNodeInfo; |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 30 | import android.view.animation.DecelerateInterpolator; |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 31 | |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 32 | import com.android.launcher3.util.Thunk; |
| 33 | |
| 34 | import java.util.HashMap; |
| 35 | |
| 36 | /** |
| 37 | * A convenience class to update a view's visibility state after an alpha animation. |
| 38 | */ |
| 39 | class AlphaUpdateListener extends AnimatorListenerAdapter implements ValueAnimator.AnimatorUpdateListener { |
| 40 | private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f; |
| 41 | |
| 42 | private View mView; |
| 43 | private boolean mAccessibilityEnabled; |
| 44 | |
| 45 | public AlphaUpdateListener(View v, boolean accessibilityEnabled) { |
| 46 | mView = v; |
| 47 | mAccessibilityEnabled = accessibilityEnabled; |
| 48 | } |
| 49 | |
| 50 | @Override |
| 51 | public void onAnimationUpdate(ValueAnimator arg0) { |
| 52 | updateVisibility(mView, mAccessibilityEnabled); |
| 53 | } |
| 54 | |
| 55 | public static void updateVisibility(View view, boolean accessibilityEnabled) { |
| 56 | // We want to avoid the extra layout pass by setting the views to GONE unless |
| 57 | // accessibility is on, in which case not setting them to GONE causes a glitch. |
| 58 | int invisibleState = accessibilityEnabled ? View.GONE : View.INVISIBLE; |
| 59 | if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != invisibleState) { |
| 60 | view.setVisibility(invisibleState); |
| 61 | } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD |
| 62 | && view.getVisibility() != View.VISIBLE) { |
| 63 | view.setVisibility(View.VISIBLE); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | public void onAnimationEnd(Animator arg0) { |
| 69 | updateVisibility(mView, mAccessibilityEnabled); |
| 70 | } |
| 71 | |
| 72 | @Override |
| 73 | public void onAnimationStart(Animator arg0) { |
| 74 | // We want the views to be visible for animation, so fade-in/out is visible |
| 75 | mView.setVisibility(View.VISIBLE); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * This interpolator emulates the rate at which the perceived scale of an object changes |
| 81 | * as its distance from a camera increases. When this interpolator is applied to a scale |
| 82 | * animation on a view, it evokes the sense that the object is shrinking due to moving away |
| 83 | * from the camera. |
| 84 | */ |
| 85 | class ZInterpolator implements TimeInterpolator { |
| 86 | private float focalLength; |
| 87 | |
| 88 | public ZInterpolator(float foc) { |
| 89 | focalLength = foc; |
| 90 | } |
| 91 | |
| 92 | public float getInterpolation(float input) { |
| 93 | return (1.0f - focalLength / (focalLength + input)) / |
| 94 | (1.0f - focalLength / (focalLength + 1.0f)); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * The exact reverse of ZInterpolator. |
| 100 | */ |
| 101 | class InverseZInterpolator implements TimeInterpolator { |
| 102 | private ZInterpolator zInterpolator; |
| 103 | public InverseZInterpolator(float foc) { |
| 104 | zInterpolator = new ZInterpolator(foc); |
| 105 | } |
| 106 | public float getInterpolation(float input) { |
| 107 | return 1 - zInterpolator.getInterpolation(1 - input); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * InverseZInterpolator compounded with an ease-out. |
| 113 | */ |
| 114 | class ZoomInInterpolator implements TimeInterpolator { |
| 115 | private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); |
| 116 | private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); |
| 117 | |
| 118 | public float getInterpolation(float input) { |
| 119 | return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Manages the animations between each of the workspace states. |
| 125 | */ |
| 126 | public class WorkspaceStateTransitionAnimation { |
| 127 | |
| 128 | public static final String TAG = "WorkspaceStateTransitionAnimation"; |
| 129 | |
| 130 | public static final int SCROLL_TO_CURRENT_PAGE = -1; |
| 131 | @Thunk static final int BACKGROUND_FADE_OUT_DURATION = 350; |
| 132 | |
| 133 | final @Thunk Launcher mLauncher; |
| 134 | final @Thunk Workspace mWorkspace; |
| 135 | |
| 136 | @Thunk AnimatorSet mStateAnimator; |
| 137 | @Thunk float[] mOldBackgroundAlphas; |
| 138 | @Thunk float[] mOldAlphas; |
| 139 | @Thunk float[] mNewBackgroundAlphas; |
| 140 | @Thunk float[] mNewAlphas; |
| 141 | @Thunk int mLastChildCount = -1; |
| 142 | |
| 143 | @Thunk float mCurrentScale; |
| 144 | @Thunk float mNewScale; |
| 145 | |
| 146 | @Thunk final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); |
| 147 | |
| 148 | // These properties refer to the background protection gradient used for AllApps and Customize |
| 149 | @Thunk ValueAnimator mBackgroundFadeInAnimation; |
| 150 | @Thunk ValueAnimator mBackgroundFadeOutAnimation; |
| 151 | |
| 152 | @Thunk float mSpringLoadedShrinkFactor; |
| 153 | @Thunk float mOverviewModeShrinkFactor; |
| 154 | @Thunk float mWorkspaceScrimAlpha; |
| 155 | @Thunk int mAllAppsTransitionTime; |
| 156 | @Thunk int mOverviewTransitionTime; |
| 157 | @Thunk int mOverlayTransitionTime; |
| 158 | @Thunk boolean mWorkspaceFadeInAdjacentScreens; |
| 159 | |
| 160 | public WorkspaceStateTransitionAnimation(Launcher launcher, Workspace workspace) { |
| 161 | mLauncher = launcher; |
| 162 | mWorkspace = workspace; |
| 163 | |
| 164 | LauncherAppState app = LauncherAppState.getInstance(); |
| 165 | DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| 166 | Resources res = launcher.getResources(); |
| 167 | mAllAppsTransitionTime = res.getInteger(R.integer.config_workspaceUnshrinkTime); |
| 168 | mOverviewTransitionTime = res.getInteger(R.integer.config_overviewTransitionTime); |
| 169 | mOverlayTransitionTime = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); |
| 170 | mSpringLoadedShrinkFactor = |
| 171 | res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100f; |
| 172 | mWorkspaceScrimAlpha = res.getInteger(R.integer.config_workspaceScrimAlpha) / 100f; |
| 173 | mOverviewModeShrinkFactor = grid.getOverviewModeScale(); |
| 174 | mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens(); |
| 175 | } |
| 176 | |
| 177 | public AnimatorSet getAnimationToState(Workspace.State fromState, Workspace.State toState, |
| 178 | int toPage, boolean animated, |
| 179 | HashMap<View, Integer> layerViews) { |
| 180 | getAnimation(fromState, toState, toPage, animated, layerViews); |
| 181 | return mStateAnimator; |
| 182 | } |
| 183 | |
| 184 | public float getFinalScale() { |
| 185 | return mNewScale; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Starts a transition animation for the workspace. |
| 190 | */ |
| 191 | private void getAnimation(final Workspace.State fromState, final Workspace.State toState, |
| 192 | int toPage, final boolean animated, |
| 193 | final HashMap<View, Integer> layerViews) { |
| 194 | AccessibilityManager am = (AccessibilityManager) |
| 195 | mLauncher.getSystemService(Context.ACCESSIBILITY_SERVICE); |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 196 | final boolean accessibilityEnabled = am.isEnabled(); |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 197 | |
| 198 | // Reinitialize animation arrays for the current workspace state |
| 199 | reinitializeAnimationArrays(); |
| 200 | |
| 201 | // Cancel existing workspace animations and create a new animator set if requested |
| 202 | cancelAnimation(); |
| 203 | if (animated) { |
| 204 | mStateAnimator = LauncherAnimUtils.createAnimatorSet(); |
| 205 | } |
| 206 | |
| 207 | // Update the workspace state |
| 208 | final boolean oldStateIsNormal = (fromState == Workspace.State.NORMAL); |
| 209 | final boolean oldStateIsSpringLoaded = (fromState == Workspace.State.SPRING_LOADED); |
| 210 | final boolean oldStateIsNormalHidden = (fromState == Workspace.State.NORMAL_HIDDEN); |
| 211 | final boolean oldStateIsOverviewHidden = (fromState == Workspace.State.OVERVIEW_HIDDEN); |
| 212 | final boolean oldStateIsOverview = (fromState == Workspace.State.OVERVIEW); |
| 213 | |
| 214 | final boolean stateIsNormal = (toState == Workspace.State.NORMAL); |
| 215 | final boolean stateIsSpringLoaded = (toState == Workspace.State.SPRING_LOADED); |
| 216 | final boolean stateIsNormalHidden = (toState == Workspace.State.NORMAL_HIDDEN); |
| 217 | final boolean stateIsOverviewHidden = (toState == Workspace.State.OVERVIEW_HIDDEN); |
| 218 | final boolean stateIsOverview = (toState == Workspace.State.OVERVIEW); |
| 219 | |
| 220 | final boolean workspaceToAllApps = (oldStateIsNormal && stateIsNormalHidden); |
| 221 | final boolean overviewToAllApps = (oldStateIsOverview && stateIsOverviewHidden); |
| 222 | final boolean allAppsToWorkspace = (stateIsNormalHidden && stateIsNormal); |
| 223 | final boolean workspaceToOverview = (oldStateIsNormal && stateIsOverview); |
| 224 | final boolean overviewToWorkspace = (oldStateIsOverview && stateIsNormal); |
| 225 | |
| 226 | float finalBackgroundAlpha = (stateIsSpringLoaded || stateIsOverview) ? 1.0f : 0f; |
| 227 | float finalHotseatAndPageIndicatorAlpha = (stateIsNormal || stateIsSpringLoaded) ? 1f : 0f; |
| 228 | float finalOverviewPanelAlpha = stateIsOverview ? 1f : 0f; |
| 229 | // We keep the search bar visible on the workspace and in AllApps now |
| 230 | boolean showSearchBar = stateIsNormal || |
| 231 | (mLauncher.isAllAppsSearchOverridden() && stateIsNormalHidden); |
| 232 | float finalSearchBarAlpha = showSearchBar ? 1f : 0f; |
| 233 | float finalWorkspaceTranslationY = stateIsOverview || stateIsOverviewHidden ? |
| 234 | mWorkspace.getOverviewModeTranslationY() : 0; |
| 235 | |
| 236 | final int childCount = mWorkspace.getChildCount(); |
| 237 | final int customPageCount = mWorkspace.numCustomPages(); |
| 238 | |
| 239 | mNewScale = 1.0f; |
| 240 | |
| 241 | if (oldStateIsOverview) { |
| 242 | mWorkspace.disableFreeScroll(); |
| 243 | } else if (stateIsOverview) { |
| 244 | mWorkspace.enableFreeScroll(); |
| 245 | } |
| 246 | |
| 247 | if (!stateIsNormal) { |
| 248 | if (stateIsSpringLoaded) { |
| 249 | mNewScale = mSpringLoadedShrinkFactor; |
| 250 | } else if (stateIsOverview || stateIsOverviewHidden) { |
| 251 | mNewScale = mOverviewModeShrinkFactor; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | final int duration; |
| 256 | if (workspaceToAllApps || overviewToAllApps) { |
| 257 | duration = mAllAppsTransitionTime; |
| 258 | } else if (workspaceToOverview || overviewToWorkspace) { |
| 259 | duration = mOverviewTransitionTime; |
| 260 | } else { |
| 261 | duration = mOverlayTransitionTime; |
| 262 | } |
| 263 | |
| 264 | if (toPage == SCROLL_TO_CURRENT_PAGE) { |
| 265 | toPage = mWorkspace.getPageNearestToCenterOfScreen(); |
| 266 | } |
| 267 | mWorkspace.snapToPage(toPage, duration, mZoomInInterpolator); |
| 268 | |
| 269 | for (int i = 0; i < childCount; i++) { |
| 270 | final CellLayout cl = (CellLayout) mWorkspace.getChildAt(i); |
| 271 | boolean isCurrentPage = (i == toPage); |
| 272 | float initialAlpha = cl.getShortcutsAndWidgets().getAlpha(); |
| 273 | float finalAlpha; |
| 274 | if (stateIsNormalHidden || stateIsOverviewHidden) { |
| 275 | finalAlpha = 0f; |
| 276 | } else if (stateIsNormal && mWorkspaceFadeInAdjacentScreens) { |
| 277 | finalAlpha = (i == toPage || i < customPageCount) ? 1f : 0f; |
| 278 | } else { |
| 279 | finalAlpha = 1f; |
| 280 | } |
| 281 | |
| 282 | // If we are animating to/from the small state, then hide the side pages and fade the |
| 283 | // current page in |
| 284 | if (!mWorkspace.isSwitchingState()) { |
| 285 | if (workspaceToAllApps || allAppsToWorkspace) { |
| 286 | if (allAppsToWorkspace && isCurrentPage) { |
| 287 | initialAlpha = 0f; |
| 288 | } else if (!isCurrentPage) { |
| 289 | initialAlpha = finalAlpha = 0f; |
| 290 | } |
| 291 | cl.setShortcutAndWidgetAlpha(initialAlpha); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | mOldAlphas[i] = initialAlpha; |
| 296 | mNewAlphas[i] = finalAlpha; |
| 297 | if (animated) { |
| 298 | mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); |
| 299 | mNewBackgroundAlphas[i] = finalBackgroundAlpha; |
| 300 | } else { |
| 301 | cl.setBackgroundAlpha(finalBackgroundAlpha); |
| 302 | cl.setShortcutAndWidgetAlpha(finalAlpha); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | final View searchBar = mLauncher.getOrCreateQsbBar(); |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 307 | final ViewGroup overviewPanel = mLauncher.getOverviewPanel(); |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 308 | final View hotseat = mLauncher.getHotseat(); |
| 309 | final View pageIndicator = mWorkspace.getPageIndicator(); |
| 310 | if (animated) { |
| 311 | LauncherViewPropertyAnimator scale = new LauncherViewPropertyAnimator(mWorkspace); |
| 312 | scale.scaleX(mNewScale) |
| 313 | .scaleY(mNewScale) |
| 314 | .translationY(finalWorkspaceTranslationY) |
| 315 | .setDuration(duration) |
| 316 | .setInterpolator(mZoomInInterpolator); |
| 317 | mStateAnimator.play(scale); |
| 318 | for (int index = 0; index < childCount; index++) { |
| 319 | final int i = index; |
| 320 | final CellLayout cl = (CellLayout) mWorkspace.getChildAt(i); |
| 321 | float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); |
| 322 | if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { |
| 323 | cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); |
| 324 | cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); |
| 325 | } else { |
| 326 | if (layerViews != null) { |
| 327 | layerViews.put(cl, LauncherStateTransitionAnimation.BUILD_LAYER); |
| 328 | } |
| 329 | if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { |
| 330 | LauncherViewPropertyAnimator alphaAnim = |
| 331 | new LauncherViewPropertyAnimator(cl.getShortcutsAndWidgets()); |
| 332 | alphaAnim.alpha(mNewAlphas[i]) |
| 333 | .setDuration(duration) |
| 334 | .setInterpolator(mZoomInInterpolator); |
| 335 | mStateAnimator.play(alphaAnim); |
| 336 | } |
| 337 | if (mOldBackgroundAlphas[i] != 0 || |
| 338 | mNewBackgroundAlphas[i] != 0) { |
| 339 | ValueAnimator bgAnim = |
| 340 | LauncherAnimUtils.ofFloat(cl, 0f, 1f); |
| 341 | bgAnim.setInterpolator(mZoomInInterpolator); |
| 342 | bgAnim.setDuration(duration); |
| 343 | bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { |
| 344 | public void onAnimationUpdate(float a, float b) { |
| 345 | cl.setBackgroundAlpha( |
| 346 | a * mOldBackgroundAlphas[i] + |
| 347 | b * mNewBackgroundAlphas[i]); |
| 348 | } |
| 349 | }); |
| 350 | mStateAnimator.play(bgAnim); |
| 351 | } |
| 352 | } |
| 353 | } |
| 354 | Animator pageIndicatorAlpha = null; |
| 355 | if (pageIndicator != null) { |
| 356 | pageIndicatorAlpha = new LauncherViewPropertyAnimator(pageIndicator) |
| 357 | .alpha(finalHotseatAndPageIndicatorAlpha).withLayer(); |
| 358 | pageIndicatorAlpha.addListener(new AlphaUpdateListener(pageIndicator, |
| 359 | accessibilityEnabled)); |
| 360 | } else { |
| 361 | // create a dummy animation so we don't need to do null checks later |
| 362 | pageIndicatorAlpha = ValueAnimator.ofFloat(0, 0); |
| 363 | } |
| 364 | |
| 365 | LauncherViewPropertyAnimator hotseatAlpha = new LauncherViewPropertyAnimator(hotseat) |
| 366 | .alpha(finalHotseatAndPageIndicatorAlpha); |
| 367 | hotseatAlpha.addListener(new AlphaUpdateListener(hotseat, accessibilityEnabled)); |
| 368 | |
| 369 | LauncherViewPropertyAnimator overviewPanelAlpha = |
| 370 | new LauncherViewPropertyAnimator(overviewPanel).alpha(finalOverviewPanelAlpha); |
| 371 | overviewPanelAlpha.addListener(new AlphaUpdateListener(overviewPanel, |
| 372 | accessibilityEnabled)); |
| 373 | |
| 374 | // For animation optimations, we may need to provide the Launcher transition |
| 375 | // with a set of views on which to force build layers in certain scenarios. |
| 376 | hotseat.setLayerType(View.LAYER_TYPE_HARDWARE, null); |
| 377 | overviewPanel.setLayerType(View.LAYER_TYPE_HARDWARE, null); |
| 378 | if (layerViews != null) { |
| 379 | // If layerViews is not null, we add these views, and indicate that |
| 380 | // the caller can manage layer state. |
| 381 | layerViews.put(hotseat, LauncherStateTransitionAnimation.BUILD_AND_SET_LAYER); |
| 382 | layerViews.put(overviewPanel, LauncherStateTransitionAnimation.BUILD_AND_SET_LAYER); |
| 383 | } else { |
| 384 | // Otherwise let the animator handle layer management. |
| 385 | hotseatAlpha.withLayer(); |
| 386 | overviewPanelAlpha.withLayer(); |
| 387 | } |
| 388 | |
| 389 | if (workspaceToOverview) { |
| 390 | pageIndicatorAlpha.setInterpolator(new DecelerateInterpolator(2)); |
| 391 | hotseatAlpha.setInterpolator(new DecelerateInterpolator(2)); |
| 392 | overviewPanelAlpha.setInterpolator(null); |
| 393 | } else if (overviewToWorkspace) { |
| 394 | pageIndicatorAlpha.setInterpolator(null); |
| 395 | hotseatAlpha.setInterpolator(null); |
| 396 | overviewPanelAlpha.setInterpolator(new DecelerateInterpolator(2)); |
| 397 | } |
| 398 | |
| 399 | overviewPanelAlpha.setDuration(duration); |
| 400 | pageIndicatorAlpha.setDuration(duration); |
| 401 | hotseatAlpha.setDuration(duration); |
| 402 | |
| 403 | // TODO: This should really be coordinated with the SearchDropTargetBar, otherwise the |
| 404 | // bar has no idea that it is hidden, and this has no idea what state the bar is |
| 405 | // actually in. |
| 406 | if (searchBar != null) { |
| 407 | LauncherViewPropertyAnimator searchBarAlpha = new LauncherViewPropertyAnimator(searchBar) |
| 408 | .alpha(finalSearchBarAlpha); |
| 409 | searchBarAlpha.addListener(new AlphaUpdateListener(searchBar, accessibilityEnabled)); |
| 410 | searchBar.setLayerType(View.LAYER_TYPE_HARDWARE, null); |
| 411 | if (layerViews != null) { |
| 412 | // If layerViews is not null, we add these views, and indicate that |
| 413 | // the caller can manage layer state. |
| 414 | layerViews.put(searchBar, LauncherStateTransitionAnimation.BUILD_AND_SET_LAYER); |
| 415 | } else { |
| 416 | // Otherwise let the animator handle layer management. |
| 417 | searchBarAlpha.withLayer(); |
| 418 | } |
| 419 | searchBarAlpha.setDuration(duration); |
| 420 | mStateAnimator.play(searchBarAlpha); |
| 421 | } |
| 422 | |
| 423 | mStateAnimator.play(overviewPanelAlpha); |
| 424 | mStateAnimator.play(hotseatAlpha); |
| 425 | mStateAnimator.play(pageIndicatorAlpha); |
| 426 | mStateAnimator.addListener(new AnimatorListenerAdapter() { |
| 427 | @Override |
| 428 | public void onAnimationEnd(Animator animation) { |
| 429 | mStateAnimator = null; |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 430 | |
| 431 | if (accessibilityEnabled && overviewPanel.getVisibility() == View.VISIBLE) { |
| 432 | overviewPanel.getChildAt(0).performAccessibilityAction( |
| 433 | AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS, null); |
| 434 | } |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 435 | } |
| 436 | }); |
| 437 | } else { |
| 438 | overviewPanel.setAlpha(finalOverviewPanelAlpha); |
| 439 | AlphaUpdateListener.updateVisibility(overviewPanel, accessibilityEnabled); |
| 440 | hotseat.setAlpha(finalHotseatAndPageIndicatorAlpha); |
| 441 | AlphaUpdateListener.updateVisibility(hotseat, accessibilityEnabled); |
| 442 | if (pageIndicator != null) { |
| 443 | pageIndicator.setAlpha(finalHotseatAndPageIndicatorAlpha); |
| 444 | AlphaUpdateListener.updateVisibility(pageIndicator, accessibilityEnabled); |
| 445 | } |
| 446 | if (searchBar != null) { |
| 447 | searchBar.setAlpha(finalSearchBarAlpha); |
| 448 | AlphaUpdateListener.updateVisibility(searchBar, accessibilityEnabled); |
| 449 | } |
| 450 | mWorkspace.updateCustomContentVisibility(); |
| 451 | mWorkspace.setScaleX(mNewScale); |
| 452 | mWorkspace.setScaleY(mNewScale); |
| 453 | mWorkspace.setTranslationY(finalWorkspaceTranslationY); |
Sunny Goyal | 1d08f70 | 2015-05-04 15:50:25 -0700 | [diff] [blame] | 454 | |
| 455 | if (accessibilityEnabled && overviewPanel.getVisibility() == View.VISIBLE) { |
| 456 | overviewPanel.getChildAt(0).performAccessibilityAction( |
| 457 | AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS, null); |
| 458 | } |
Winson Chung | dc61c4d | 2015-04-20 18:26:57 -0700 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | if (stateIsNormal) { |
| 462 | animateBackgroundGradient(0f, animated); |
| 463 | } else { |
| 464 | animateBackgroundGradient(mWorkspaceScrimAlpha, animated); |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | /** |
| 469 | * Reinitializes the arrays that we need for the animations on each page. |
| 470 | */ |
| 471 | private void reinitializeAnimationArrays() { |
| 472 | final int childCount = mWorkspace.getChildCount(); |
| 473 | if (mLastChildCount == childCount) return; |
| 474 | |
| 475 | mOldBackgroundAlphas = new float[childCount]; |
| 476 | mOldAlphas = new float[childCount]; |
| 477 | mNewBackgroundAlphas = new float[childCount]; |
| 478 | mNewAlphas = new float[childCount]; |
| 479 | } |
| 480 | |
| 481 | /** |
| 482 | * Animates the background scrim. |
| 483 | * TODO(winsonc): Is there a better place for this? |
| 484 | * |
| 485 | * @param finalAlpha the final alpha for the background scrim |
| 486 | * @param animated whether or not to set the background alpha immediately |
| 487 | */ |
| 488 | private void animateBackgroundGradient(float finalAlpha, boolean animated) { |
| 489 | // Cancel any running background animations |
| 490 | cancelAnimator(mBackgroundFadeInAnimation); |
| 491 | cancelAnimator(mBackgroundFadeOutAnimation); |
| 492 | |
| 493 | final DragLayer dragLayer = mLauncher.getDragLayer(); |
| 494 | final float startAlpha = dragLayer.getBackgroundAlpha(); |
| 495 | if (finalAlpha != startAlpha) { |
| 496 | if (animated) { |
| 497 | mBackgroundFadeOutAnimation = |
| 498 | LauncherAnimUtils.ofFloat(mWorkspace, startAlpha, finalAlpha); |
| 499 | mBackgroundFadeOutAnimation.addUpdateListener( |
| 500 | new ValueAnimator.AnimatorUpdateListener() { |
| 501 | public void onAnimationUpdate(ValueAnimator animation) { |
| 502 | dragLayer.setBackgroundAlpha( |
| 503 | ((Float)animation.getAnimatedValue()).floatValue()); |
| 504 | } |
| 505 | }); |
| 506 | mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); |
| 507 | mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); |
| 508 | mBackgroundFadeOutAnimation.start(); |
| 509 | } else { |
| 510 | dragLayer.setBackgroundAlpha(finalAlpha); |
| 511 | } |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * Cancels the current animation. |
| 517 | */ |
| 518 | private void cancelAnimation() { |
| 519 | cancelAnimator(mStateAnimator); |
| 520 | mStateAnimator = null; |
| 521 | } |
| 522 | |
| 523 | /** |
| 524 | * Cancels the specified animation. |
| 525 | */ |
| 526 | private void cancelAnimator(Animator animator) { |
| 527 | if (animator != null) { |
| 528 | animator.setDuration(0); |
| 529 | animator.cancel(); |
| 530 | } |
| 531 | } |
| 532 | } |