1 files changed, 0 insertions, 356 deletions
diff --git a/src/com/android/launcher3/notification/FlingAnimationUtils.java b/src/com/android/launcher3/notification/FlingAnimationUtils.java
deleted file mode 100644
index a1f7e49c0..000000000
--- a/src/com/android/launcher3/notification/FlingAnimationUtils.java
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * Copyright (C) 2017 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.notification;
-
-import android.animation.Animator;
-import android.content.Context;
-import android.view.ViewPropertyAnimator;
-import android.view.animation.Interpolator;
-import android.view.animation.PathInterpolator;
-
-/**
- * Utility class to calculate general fling animation when the finger is released.
- *
- * This class was copied from com.android.systemui.statusbar.
- */
-public class FlingAnimationUtils {
-
-    private static final float LINEAR_OUT_SLOW_IN_X2 = 0.35f;
-    private static final float LINEAR_OUT_SLOW_IN_X2_MAX = 0.68f;
-    private static final float LINEAR_OUT_FASTER_IN_X2 = 0.5f;
-    private static final float LINEAR_OUT_FASTER_IN_Y2_MIN = 0.4f;
-    private static final float LINEAR_OUT_FASTER_IN_Y2_MAX = 0.5f;
-    private static final float MIN_VELOCITY_DP_PER_SECOND = 250;
-    private static final float HIGH_VELOCITY_DP_PER_SECOND = 3000;
-
-    private static final float LINEAR_OUT_SLOW_IN_START_GRADIENT = 0.75f;
-    private final float mSpeedUpFactor;
-    private final float mY2;
-
-    private float mMinVelocityPxPerSecond;
-    private float mMaxLengthSeconds;
-    private float mHighVelocityPxPerSecond;
-    private float mLinearOutSlowInX2;
-
-    private AnimatorProperties mAnimatorProperties = new AnimatorProperties();
-    private PathInterpolator mInterpolator;
-    private float mCachedStartGradient = -1;
-    private float mCachedVelocityFactor = -1;
-
-    public FlingAnimationUtils(Context ctx, float maxLengthSeconds) {
-        this(ctx, maxLengthSeconds, 0.0f);
-    }
-
-    /**
-     * @param maxLengthSeconds the longest duration an animation can become in seconds
-     * @param speedUpFactor a factor from 0 to 1 how much the slow down should be shifted towards
-     *                      the end of the animation. 0 means it's at the beginning and no
-     *                      acceleration will take place.
-     */
-    public FlingAnimationUtils(Context ctx, float maxLengthSeconds, float speedUpFactor) {
-        this(ctx, maxLengthSeconds, speedUpFactor, -1.0f, 1.0f);
-    }
-
-    /**
-     * @param maxLengthSeconds the longest duration an animation can become in seconds
-     * @param speedUpFactor a factor from 0 to 1 how much the slow down should be shifted towards
-     *                      the end of the animation. 0 means it's at the beginning and no
-     *                      acceleration will take place.
-     * @param x2 the x value to take for the second point of the bezier spline. If a value below 0
-     *           is provided, the value is automatically calculated.
-     * @param y2 the y value to take for the second point of the bezier spline
-     */
-    public FlingAnimationUtils(Context ctx, float maxLengthSeconds, float speedUpFactor, float x2,
-            float y2) {
-        mMaxLengthSeconds = maxLengthSeconds;
-        mSpeedUpFactor = speedUpFactor;
-        if (x2 < 0) {
-            mLinearOutSlowInX2 = interpolate(LINEAR_OUT_SLOW_IN_X2,
-                    LINEAR_OUT_SLOW_IN_X2_MAX,
-                    mSpeedUpFactor);
-        } else {
-            mLinearOutSlowInX2 = x2;
-        }
-        mY2 = y2;
-
-        mMinVelocityPxPerSecond
-                = MIN_VELOCITY_DP_PER_SECOND * ctx.getResources().getDisplayMetrics().density;
-        mHighVelocityPxPerSecond
-                = HIGH_VELOCITY_DP_PER_SECOND * ctx.getResources().getDisplayMetrics().density;
-    }
-
-    private static float interpolate(float start, float end, float amount) {
-        return start * (1.0f - amount) + end * amount;
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     */
-    public void apply(Animator animator, float currValue, float endValue, float velocity) {
-        apply(animator, currValue, endValue, velocity, Math.abs(endValue - currValue));
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     */
-    public void apply(ViewPropertyAnimator animator, float currValue, float endValue,
-            float velocity) {
-        apply(animator, currValue, endValue, velocity, Math.abs(endValue - currValue));
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void apply(Animator animator, float currValue, float endValue, float velocity,
-            float maxDistance) {
-        AnimatorProperties properties = getProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void apply(ViewPropertyAnimator animator, float currValue, float endValue,
-            float velocity, float maxDistance) {
-        AnimatorProperties properties = getProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    private AnimatorProperties getProperties(float currValue,
-            float endValue, float velocity, float maxDistance) {
-        float maxLengthSeconds = (float) (mMaxLengthSeconds
-                * Math.sqrt(Math.abs(endValue - currValue) / maxDistance));
-        float diff = Math.abs(endValue - currValue);
-        float velAbs = Math.abs(velocity);
-        float velocityFactor = mSpeedUpFactor == 0.0f
-                ? 1.0f : Math.min(velAbs / HIGH_VELOCITY_DP_PER_SECOND, 1.0f);
-        float startGradient = interpolate(LINEAR_OUT_SLOW_IN_START_GRADIENT,
-                mY2 / mLinearOutSlowInX2, velocityFactor);
-        float durationSeconds = startGradient * diff / velAbs;
-        Interpolator slowInInterpolator = getInterpolator(startGradient, velocityFactor);
-        if (durationSeconds <= maxLengthSeconds) {
-            mAnimatorProperties.interpolator = slowInInterpolator;
-        } else if (velAbs >= mMinVelocityPxPerSecond) {
-
-            // Cross fade between fast-out-slow-in and linear interpolator with current velocity.
-            durationSeconds = maxLengthSeconds;
-            VelocityInterpolator velocityInterpolator
-                    = new VelocityInterpolator(durationSeconds, velAbs, diff);
-            InterpolatorInterpolator superInterpolator = new InterpolatorInterpolator(
-                    velocityInterpolator, slowInInterpolator, Interpolators.LINEAR_OUT_SLOW_IN);
-            mAnimatorProperties.interpolator = superInterpolator;
-        } else {
-
-            // Just use a normal interpolator which doesn't take the velocity into account.
-            durationSeconds = maxLengthSeconds;
-            mAnimatorProperties.interpolator = Interpolators.FAST_OUT_SLOW_IN;
-        }
-        mAnimatorProperties.duration = (long) (durationSeconds * 1000);
-        return mAnimatorProperties;
-    }
-
-    private Interpolator getInterpolator(float startGradient, float velocityFactor) {
-        if (startGradient != mCachedStartGradient
-                || velocityFactor != mCachedVelocityFactor) {
-            float speedup = mSpeedUpFactor * (1.0f - velocityFactor);
-            mInterpolator = new PathInterpolator(speedup,
-                    speedup * startGradient,
-                    mLinearOutSlowInX2, mY2);
-            mCachedStartGradient = startGradient;
-            mCachedVelocityFactor = velocityFactor;
-        }
-        return mInterpolator;
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion for the case when the animation is making something
-     * disappear.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void applyDismissing(Animator animator, float currValue, float endValue,
-            float velocity, float maxDistance) {
-        AnimatorProperties properties = getDismissingProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    /**
-     * Applies the interpolator and length to the animator, such that the fling animation is
-     * consistent with the finger motion for the case when the animation is making something
-     * disappear.
-     *
-     * @param animator the animator to apply
-     * @param currValue the current value
-     * @param endValue the end value of the animator
-     * @param velocity the current velocity of the motion
-     * @param maxDistance the maximum distance for this interaction; the maximum animation length
-     *                    gets multiplied by the ratio between the actual distance and this value
-     */
-    public void applyDismissing(ViewPropertyAnimator animator, float currValue, float endValue,
-            float velocity, float maxDistance) {
-        AnimatorProperties properties = getDismissingProperties(currValue, endValue, velocity,
-                maxDistance);
-        animator.setDuration(properties.duration);
-        animator.setInterpolator(properties.interpolator);
-    }
-
-    private AnimatorProperties getDismissingProperties(float currValue, float endValue,
-            float velocity, float maxDistance) {
-        float maxLengthSeconds = (float) (mMaxLengthSeconds
-                * Math.pow(Math.abs(endValue - currValue) / maxDistance, 0.5f));
-        float diff = Math.abs(endValue - currValue);
-        float velAbs = Math.abs(velocity);
-        float y2 = calculateLinearOutFasterInY2(velAbs);
-
-        float startGradient = y2 / LINEAR_OUT_FASTER_IN_X2;
-        Interpolator mLinearOutFasterIn = new PathInterpolator(0, 0, LINEAR_OUT_FASTER_IN_X2, y2);
-        float durationSeconds = startGradient * diff / velAbs;
-        if (durationSeconds <= maxLengthSeconds) {
-            mAnimatorProperties.interpolator = mLinearOutFasterIn;
-        } else if (velAbs >= mMinVelocityPxPerSecond) {
-
-            // Cross fade between linear-out-faster-in and linear interpolator with current
-            // velocity.
-            durationSeconds = maxLengthSeconds;
-            VelocityInterpolator velocityInterpolator
-                    = new VelocityInterpolator(durationSeconds, velAbs, diff);
-            InterpolatorInterpolator superInterpolator = new InterpolatorInterpolator(
-                    velocityInterpolator, mLinearOutFasterIn, Interpolators.LINEAR_OUT_SLOW_IN);
-            mAnimatorProperties.interpolator = superInterpolator;
-        } else {
-
-            // Just use a normal interpolator which doesn't take the velocity into account.
-            durationSeconds = maxLengthSeconds;
-            mAnimatorProperties.interpolator = Interpolators.FAST_OUT_LINEAR_IN;
-        }
-        mAnimatorProperties.duration = (long) (durationSeconds * 1000);
-        return mAnimatorProperties;
-    }
-
-    /**
-     * Calculates the y2 control point for a linear-out-faster-in path interpolator depending on the
-     * velocity. The faster the velocity, the more "linear" the interpolator gets.
-     *
-     * @param velocity the velocity of the gesture.
-     * @return the y2 control point for a cubic bezier path interpolator
-     */
-    private float calculateLinearOutFasterInY2(float velocity) {
-        float t = (velocity - mMinVelocityPxPerSecond)
-                / (mHighVelocityPxPerSecond - mMinVelocityPxPerSecond);
-        t = Math.max(0, Math.min(1, t));
-        return (1 - t) * LINEAR_OUT_FASTER_IN_Y2_MIN + t * LINEAR_OUT_FASTER_IN_Y2_MAX;
-    }
-
-    /**
-     * @return the minimum velocity a gesture needs to have to be considered a fling
-     */
-    public float getMinVelocityPxPerSecond() {
-        return mMinVelocityPxPerSecond;
-    }
-
-    /**
-     * An interpolator which interpolates two interpolators with an interpolator.
-     */
-    private static final class InterpolatorInterpolator implements Interpolator {
-
-        private Interpolator mInterpolator1;
-        private Interpolator mInterpolator2;
-        private Interpolator mCrossfader;
-
-        InterpolatorInterpolator(Interpolator interpolator1, Interpolator interpolator2,
-                Interpolator crossfader) {
-            mInterpolator1 = interpolator1;
-            mInterpolator2 = interpolator2;
-            mCrossfader = crossfader;
-        }
-
-        @Override
-        public float getInterpolation(float input) {
-            float t = mCrossfader.getInterpolation(input);
-            return (1 - t) * mInterpolator1.getInterpolation(input)
-                    + t * mInterpolator2.getInterpolation(input);
-        }
-    }
-
-    /**
-     * An interpolator which interpolates with a fixed velocity.
-     */
-    private static final class VelocityInterpolator implements Interpolator {
-
-        private float mDurationSeconds;
-        private float mVelocity;
-        private float mDiff;
-
-        private VelocityInterpolator(float durationSeconds, float velocity, float diff) {
-            mDurationSeconds = durationSeconds;
-            mVelocity = velocity;
-            mDiff = diff;
-        }
-
-        @Override
-        public float getInterpolation(float input) {
-            float time = input * mDurationSeconds;
-            return time * mVelocity / mDiff;
-        }
-    }
-
-    private static class AnimatorProperties {
-        Interpolator interpolator;
-        long duration;
-    }
-
-}