amitsharma9423 / welcome-message- Goto Github PK

https://github.com/dlew/android-movies-demo/blob/main/MoviesDemoProject/MoviesDemo/src/main/java/com/idunnolol/moviesdemo/view/ViewPager.java
/*

• Copyright (C) 2011 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.idunnolol.moviesdemo.view;

import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.SystemClock;
import android.support.v4.os.ParcelableCompat;
import android.support.v4.os.ParcelableCompatCreatorCallbacks;
import android.support.v4.view.AccessibilityDelegateCompat;
import android.support.v4.view.KeyEventCompat;
import android.support.v4.view.MotionEventCompat;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.VelocityTrackerCompat;
import android.support.v4.view.ViewCompat;
import android.support.v4.view.ViewConfigurationCompat;
import android.support.v4.view.accessibility.AccessibilityEventCompat;
import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
import android.support.v4.view.accessibility.AccessibilityRecordCompat;
import android.support.v4.widget.EdgeEffectCompat;
import android.util.AttributeSet;
import android.util.Log;
import android.view.FocusFinder;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.SoundEffectConstants;
import android.view.VelocityTracker;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.Interpolator;
import android.widget.Scroller;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

/**

• We have our own internal version of ViewPager so that we can have

• access to the Decor interface. This lets us overlay the UI on top

• of a ViewPager.
  */
  public class ViewPager extends ViewGroup {
  private static final String TAG = "ViewPager";
  private static final boolean DEBUG = false;

  private static final boolean USE_CACHE = false;

  private static final int DEFAULT_OFFSCREEN_PAGES = 1;
  private static final int MAX_SETTLE_DURATION = 600; // ms
  private static final int MIN_DISTANCE_FOR_FLING = 25; // dips

  private static final int DEFAULT_GUTTER_SIZE = 16; // dips

  private static final int MIN_FLING_VELOCITY = 400; // dips

  private static final int[] LAYOUT_ATTRS = new int[] {
  android.R.attr.layout_gravity
  };

  /**

  • Used to track what the expected number of items in the adapter should be.
  • If the app changes this when we don't expect it, we'll throw a big obnoxious exception.
    */
    private int mExpectedAdapterCount;

  static class ItemInfo {
  Object object;
  int position;
  boolean scrolling;
  float widthFactor;
  float offset;
  }

  private static final Comparator COMPARATOR = new Comparator(){
  @OverRide
  public int compare(ItemInfo lhs, ItemInfo rhs) {
  return lhs.position - rhs.position;
  }
  };

  private static final Interpolator sInterpolator = new Interpolator() {
  public float getInterpolation(float t) {
  t -= 1.0f;
  return t * t * t * t * t + 1.0f;
  }
  };

  private final ArrayList mItems = new ArrayList();
  private final ItemInfo mTempItem = new ItemInfo();

  private final Rect mTempRect = new Rect();

  private PagerAdapter mAdapter;
  private int mCurItem; // Index of currently displayed page.
  private int mRestoredCurItem = -1;
  private Parcelable mRestoredAdapterState = null;
  private ClassLoader mRestoredClassLoader = null;
  private Scroller mScroller;
  private PagerObserver mObserver;

  private int mPageMargin;
  private Drawable mMarginDrawable;
  private int mTopPageBounds;
  private int mBottomPageBounds;

  // Offsets of the first and last items, if known.
  // Set during population, used to determine if we are at the beginning
  // or end of the pager data set during touch scrolling.
  private float mFirstOffset = -Float.MAX_VALUE;
  private float mLastOffset = Float.MAX_VALUE;

  private int mChildWidthMeasureSpec;
  private int mChildHeightMeasureSpec;
  private boolean mInLayout;

  private boolean mScrollingCacheEnabled;

  private boolean mPopulatePending;
  private int mOffscreenPageLimit = DEFAULT_OFFSCREEN_PAGES;

  private boolean mIsBeingDragged;