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-rw-r--r--src/com/android/launcher3/SmoothPagedView.java185
1 files changed, 0 insertions, 185 deletions
diff --git a/src/com/android/launcher3/SmoothPagedView.java b/src/com/android/launcher3/SmoothPagedView.java
deleted file mode 100644
index 4e331aa2c..000000000
--- a/src/com/android/launcher3/SmoothPagedView.java
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
- * Copyright (C) 2008 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;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.animation.Interpolator;
-
-public abstract class SmoothPagedView extends PagedView {
- private static final float SMOOTHING_SPEED = 0.75f;
- private static final float SMOOTHING_CONSTANT = (float) (0.016 / Math.log(SMOOTHING_SPEED));
-
- private float mBaseLineFlingVelocity;
- private float mFlingVelocityInfluence;
-
- static final int DEFAULT_MODE = 0;
- static final int X_LARGE_MODE = 1;
-
- int mScrollMode;
-
- private Interpolator mScrollInterpolator;
-
- public static class OvershootInterpolator implements Interpolator {
- private static final float DEFAULT_TENSION = 1.3f;
- private float mTension;
-
- public OvershootInterpolator() {
- mTension = DEFAULT_TENSION;
- }
-
- public void setDistance(int distance) {
- mTension = distance > 0 ? DEFAULT_TENSION / distance : DEFAULT_TENSION;
- }
-
- public void disableSettle() {
- mTension = 0.f;
- }
-
- public float getInterpolation(float t) {
- t -= 1.0f;
- return t * t * ((mTension + 1) * t + mTension) + 1.0f;
- }
- }
-
- /**
- * Used to inflate the Workspace from XML.
- *
- * @param context The application's context.
- * @param attrs The attributes set containing the Workspace's customization values.
- */
- public SmoothPagedView(Context context, AttributeSet attrs) {
- this(context, attrs, 0);
- }
-
- /**
- * Used to inflate the Workspace from XML.
- *
- * @param context The application's context.
- * @param attrs The attributes set containing the Workspace's customization values.
- * @param defStyle Unused.
- */
- public SmoothPagedView(Context context, AttributeSet attrs, int defStyle) {
- super(context, attrs, defStyle);
-
- mUsePagingTouchSlop = false;
-
- // This means that we'll take care of updating the scroll parameter ourselves (we do it
- // in computeScroll), we only do this in the OVERSHOOT_MODE, ie. on phones
- mDeferScrollUpdate = mScrollMode != X_LARGE_MODE;
- }
-
- protected int getScrollMode() {
- return X_LARGE_MODE;
- }
-
- /**
- * Initializes various states for this workspace.
- */
- @Override
- protected void init() {
- super.init();
-
- mScrollMode = getScrollMode();
- if (mScrollMode == DEFAULT_MODE) {
- mBaseLineFlingVelocity = 2500.0f;
- mFlingVelocityInfluence = 0.4f;
- mScrollInterpolator = new OvershootInterpolator();
- setDefaultInterpolator(mScrollInterpolator);
- }
- }
-
- @Override
- protected void snapToDestination() {
- if (mScrollMode == X_LARGE_MODE) {
- super.snapToDestination();
- } else {
- snapToPageWithVelocity(getPageNearestToCenterOfScreen(), 0);
- }
- }
-
- @Override
- protected void snapToPageWithVelocity(int whichPage, int velocity) {
- if (mScrollMode == X_LARGE_MODE) {
- super.snapToPageWithVelocity(whichPage, velocity);
- } else {
- snapToPageWithVelocity(whichPage, 0, true);
- }
- }
-
- private void snapToPageWithVelocity(int whichPage, int velocity, boolean settle) {
- // if (!mScroller.isFinished()) return;
-
- whichPage = Math.max(0, Math.min(whichPage, getChildCount() - 1));
-
- final int screenDelta = Math.max(1, Math.abs(whichPage - mCurrentPage));
- final int newX = getScrollForPage(whichPage);
- final int delta = newX - mUnboundedScrollX;
- int duration = (screenDelta + 1) * 100;
-
- if (!mScroller.isFinished()) {
- mScroller.abortAnimation();
- }
-
- if (settle) {
- ((OvershootInterpolator) mScrollInterpolator).setDistance(screenDelta);
- } else {
- ((OvershootInterpolator) mScrollInterpolator).disableSettle();
- }
-
- velocity = Math.abs(velocity);
- if (velocity > 0) {
- duration += (duration / (velocity / mBaseLineFlingVelocity)) * mFlingVelocityInfluence;
- } else {
- duration += 100;
- }
-
- snapToPage(whichPage, delta, duration);
- }
-
- @Override
- protected void snapToPage(int whichPage) {
- if (mScrollMode == X_LARGE_MODE) {
- super.snapToPage(whichPage);
- } else {
- snapToPageWithVelocity(whichPage, 0, false);
- }
- }
-
- @Override
- public void computeScroll() {
- if (mScrollMode == X_LARGE_MODE) {
- super.computeScroll();
- } else {
- boolean scrollComputed = computeScrollHelper();
-
- if (!scrollComputed && mTouchState == TOUCH_STATE_SCROLLING) {
- final float now = System.nanoTime() / NANOTIME_DIV;
- final float e = (float) Math.exp((now - mSmoothingTime) / SMOOTHING_CONSTANT);
-
- final float dx = mTouchX - mUnboundedScrollX;
- scrollTo(Math.round(mUnboundedScrollX + dx * e), getScrollY());
- mSmoothingTime = now;
-
- // Keep generating points as long as we're more than 1px away from the target
- if (dx > 1.f || dx < -1.f) {
- invalidate();
- }
- }
- }
- }
-}