diff options
Diffstat (limited to 'src_ui_overrides/com/android/launcher3/uioverrides/PinchToOverviewListener.java')
| -rw-r--r-- | src_ui_overrides/com/android/launcher3/uioverrides/PinchToOverviewListener.java | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/PinchToOverviewListener.java b/src_ui_overrides/com/android/launcher3/uioverrides/PinchToOverviewListener.java deleted file mode 100644 index a7c8cee29..000000000 --- a/src_ui_overrides/com/android/launcher3/uioverrides/PinchToOverviewListener.java +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Copyright (C) 2016 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.android.launcher3.uioverrides; - -import static com.android.launcher3.LauncherAnimUtils.OVERVIEW_TRANSITION_MS; -import static com.android.launcher3.LauncherState.NORMAL; -import static com.android.launcher3.LauncherState.OVERVIEW; -import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled; - -import android.animation.Animator; -import android.animation.AnimatorListenerAdapter; -import android.view.MotionEvent; -import android.view.ScaleGestureDetector; -import android.view.ScaleGestureDetector.OnScaleGestureListener; - -import com.android.launcher3.AbstractFloatingView; -import com.android.launcher3.Launcher; -import com.android.launcher3.LauncherState; -import com.android.launcher3.Workspace; -import com.android.launcher3.anim.AnimatorPlaybackController; -import com.android.launcher3.util.TouchController; - -/** - * Detects pinches and animates the Workspace to/from overview mode. - */ -public class PinchToOverviewListener extends AnimatorListenerAdapter - implements TouchController, OnScaleGestureListener { - - private static final float ACCEPT_THRESHOLD = 0.65f; - /** - * The velocity threshold at which a pinch will be completed instead of canceled, - * even if the first threshold has not been passed. Measured in scale / millisecond - */ - private static final float FLING_VELOCITY = 0.001f; - - private final ScaleGestureDetector mPinchDetector; - private Launcher mLauncher; - private Workspace mWorkspace = null; - private boolean mPinchStarted = false; - - private AnimatorPlaybackController mCurrentAnimation; - private float mCurrentScale; - private boolean mShouldGoToFinalState; - - private LauncherState mToState; - - public PinchToOverviewListener(Launcher launcher) { - mLauncher = launcher; - mPinchDetector = new ScaleGestureDetector(mLauncher, this); - } - - public boolean onControllerInterceptTouchEvent(MotionEvent ev) { - mPinchDetector.onTouchEvent(ev); - return mPinchStarted; - } - - public boolean onControllerTouchEvent(MotionEvent ev) { - return mPinchDetector.onTouchEvent(ev); - } - - @Override - public boolean onScaleBegin(ScaleGestureDetector detector) { - if (isAccessibilityEnabled(mLauncher)) { - return false; - } - if (!mLauncher.isInState(NORMAL) && !mLauncher.isInState(OVERVIEW)) { - // Don't listen for the pinch gesture if on all apps, widget picker, -1, etc. - return false; - } - if (mCurrentAnimation != null) { - // Don't listen for the pinch gesture if we are already animating from a previous one. - return false; - } - if (mLauncher.isWorkspaceLocked()) { - // Don't listen for the pinch gesture if the workspace isn't ready. - return false; - } - if (mWorkspace == null) { - mWorkspace = mLauncher.getWorkspace(); - } - if (mWorkspace.isSwitchingState()) { - // Don't listen for the pinch gesture while switching state, as it will cause a jump - // once the state switching animation is complete. - return false; - } - if (AbstractFloatingView.getTopOpenView(mLauncher) != null) { - // Don't listen for the pinch gesture if a floating view is open. - return false; - } - - if (mLauncher.getDragController().isDragging()) { - mLauncher.getDragController().cancelDrag(); - } - - mToState = mLauncher.isInState(OVERVIEW) ? NORMAL : OVERVIEW; - mCurrentAnimation = mLauncher.getStateManager() - .createAnimationToNewWorkspace(mToState, OVERVIEW_TRANSITION_MS); - mCurrentAnimation.getTarget().addListener(this); - mPinchStarted = true; - mCurrentScale = 1; - mShouldGoToFinalState = false; - - mCurrentAnimation.dispatchOnStart(); - return true; - } - - @Override - public void onAnimationEnd(Animator animation) { - mCurrentAnimation = null; - mPinchStarted = false; - } - - @Override - public void onScaleEnd(ScaleGestureDetector detector) { - if (mShouldGoToFinalState) { - mCurrentAnimation.start(); - } else { - mCurrentAnimation.setEndAction(new Runnable() { - @Override - public void run() { - mLauncher.getStateManager().goToState( - mToState == OVERVIEW ? NORMAL : OVERVIEW, false); - } - }); - mCurrentAnimation.reverse(); - } - } - - @Override - public boolean onScale(ScaleGestureDetector detector) { - mCurrentScale = detector.getScaleFactor() * mCurrentScale; - - // If we are zooming out, inverse the mCurrentScale so that animationFraction = [0, 1] - // 0 => Animation complete - // 1=> Animation started - float animationFraction = mToState == OVERVIEW ? mCurrentScale : (1 / mCurrentScale); - - float velocity = (1 - detector.getScaleFactor()) / detector.getTimeDelta(); - if (Math.abs(velocity) >= FLING_VELOCITY) { - LauncherState toState = velocity > 0 ? OVERVIEW : NORMAL; - mShouldGoToFinalState = toState == mToState; - } else { - mShouldGoToFinalState = animationFraction <= ACCEPT_THRESHOLD; - } - - // Move the transition animation to that duration. - mCurrentAnimation.setPlayFraction(1 - animationFraction); - return true; - } -}
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