package com.mm.android.deviceaddmodule.mobilecommon.widget.swipe;
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import android.annotation.SuppressLint;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.graphics.Rect;
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import android.support.v4.view.ViewCompat;
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import android.support.v4.widget.ViewDragHelper;
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import android.util.AttributeSet;
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import android.view.GestureDetector;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.ViewParent;
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import android.widget.Adapter;
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import android.widget.AdapterView;
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import android.widget.BaseAdapter;
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import android.widget.FrameLayout;
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import android.widget.ListAdapter;
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import com.mm.android.deviceaddmodule.R;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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@SuppressLint("WrongCall") public class SwipeLayout extends FrameLayout {
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private ViewDragHelper mDragHelper;
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private int mDragDistance = 0;
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private DragEdge mDragEdge;
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private ShowMode mShowMode;
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private List<SwipeListener> mSwipeListeners = new ArrayList<>();
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private List<SwipeDenier> mSwipeDeniers = new ArrayList<>();
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private Map<View, ArrayList<OnRevealListener>> mRevealListeners = new HashMap<>();
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private Map<View, Boolean> mShowEntirely = new HashMap<>();
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private DoubleClickListener mDoubleClickListener;
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private boolean mSwipeEnabled = true;
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public static enum DragEdge {
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Left,
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Right,
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Top,
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Bottom;
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};
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public static enum ShowMode {
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LayDown, PullOut
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}
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public SwipeLayout(Context context) {
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this(context, null);
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}
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public SwipeLayout(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public SwipeLayout(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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mDragHelper = ViewDragHelper.create(this, mDragHelperCallback);
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SwipeLayout);
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int ordinal = a.getInt(R.styleable.SwipeLayout_drag_edge, DragEdge.Right.ordinal());
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mDragEdge = DragEdge.values()[ordinal];
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ordinal = a.getInt(R.styleable.SwipeLayout_show_mode, ShowMode.PullOut.ordinal());
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mShowMode = ShowMode.values()[ordinal];
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a.recycle();
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}
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public interface SwipeListener{
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public void onStartOpen(SwipeLayout layout);
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public void onOpen(SwipeLayout layout);
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public void onStartClose(SwipeLayout layout);
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public void onClose(SwipeLayout layout);
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public void onUpdate(SwipeLayout layout, int leftOffset, int topOffset);
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public void onHandRelease(SwipeLayout layout, float xvel, float yvel);
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}
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public void addSwipeListener(SwipeListener l){
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mSwipeListeners.add(l);
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}
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public void removeSwipeListener(SwipeListener l){
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mSwipeListeners.remove(l);
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}
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public static interface SwipeDenier {
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/*
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* Called in onInterceptTouchEvent
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* Determines if this swipe event should be denied
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* Implement this interface if you are using views with swipe gestures
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* As a child of SwipeLayout
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*
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* @return true deny
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* false allow
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*/
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public boolean shouldDenySwipe(MotionEvent ev);
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}
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public void addSwipeDenier(SwipeDenier denier) {
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mSwipeDeniers.add(denier);
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}
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public void removeSwipeDenier(SwipeDenier denier) {
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mSwipeDeniers.remove(denier);
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}
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public void removeAllSwipeDeniers() {
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mSwipeDeniers.clear();
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}
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public interface OnRevealListener {
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public void onReveal(View child, DragEdge edge, float fraction, int distance);
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}
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/**
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* bind a view with a specific {@link OnRevealListener}
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* @param childId the view id.
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* @param l the target {@link OnRevealListener}
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*/
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public void addRevealListener(int childId, OnRevealListener l){
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View child = findViewById(childId);
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if(child == null){
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throw new IllegalArgumentException("Child does not belong to SwipeListener.");
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}
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if(!mShowEntirely.containsKey(child)){
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mShowEntirely.put(child, false);
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}
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if(mRevealListeners.get(child) == null)
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mRevealListeners.put(child, new ArrayList<OnRevealListener>());
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mRevealListeners.get(child).add(l);
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}
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/**
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* bind multiple views with an {@link OnRevealListener}.
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* @param childIds the view id.
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* @param l the {@link OnRevealListener}
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*/
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public void addRevealListener(int[] childIds, OnRevealListener l){
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for(int i : childIds)
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addRevealListener(i, l);
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}
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public void removeRevealListener(int childId, OnRevealListener l){
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View child = findViewById(childId);
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if(child == null)
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return;
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mShowEntirely.remove(child);
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if(mRevealListeners.containsKey(child))
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mRevealListeners.get(child).remove(l);
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}
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public void removeAllRevealListeners(int childId){
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View child = findViewById(childId);
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if(child != null){
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mRevealListeners.remove(child);
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mShowEntirely.remove(child);
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}
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}
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private ViewDragHelper.Callback mDragHelperCallback = new ViewDragHelper.Callback() {
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@Override
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public int clampViewPositionHorizontal(View child, int left, int dx) {
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if(child == getSurfaceView()){
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switch (mDragEdge){
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case Top:
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case Bottom:
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return getPaddingLeft();
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case Left:
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if(left < getPaddingLeft())
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return getPaddingLeft();
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if(left > getPaddingLeft() + mDragDistance)
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return getPaddingLeft() + mDragDistance;
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break;
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case Right:
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if(left > getPaddingLeft())
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return getPaddingLeft();
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if(left < getPaddingLeft() - mDragDistance)
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return getPaddingLeft() - mDragDistance;
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break;
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}
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}else if(child == getBottomView()){
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switch (mDragEdge){
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case Top:
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case Bottom:
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return getPaddingLeft();
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case Left:
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if(mShowMode == ShowMode.PullOut){
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if(left > getPaddingLeft())
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return getPaddingLeft();
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}
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break;
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case Right:
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if(mShowMode == ShowMode.PullOut){
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if(left < getMeasuredWidth() - mDragDistance){
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return getMeasuredWidth() - mDragDistance;
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}
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}
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break;
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}
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}
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return left;
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}
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@Override
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public int clampViewPositionVertical(View child, int top, int dy) {
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if(child == getSurfaceView()){
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switch (mDragEdge){
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case Left:
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case Right:
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return getPaddingTop();
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case Top:
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if(top < getPaddingTop())
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return getPaddingTop();
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if(top > getPaddingTop() + mDragDistance)
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return getPaddingTop() + mDragDistance;
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break;
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case Bottom:
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if(top < getPaddingTop() - mDragDistance){
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return getPaddingTop() - mDragDistance;
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}
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if(top > getPaddingTop()){
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return getPaddingTop();
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}
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}
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}else{
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switch (mDragEdge){
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case Left:
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case Right:
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return getPaddingTop();
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case Top:
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if(mShowMode == ShowMode.PullOut){
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if(top > getPaddingTop())
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return getPaddingTop();
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}else{
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if(getSurfaceView().getTop() + dy < getPaddingTop())
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return getPaddingTop();
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if(getSurfaceView().getTop() + dy > getPaddingTop() + mDragDistance)
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return getPaddingTop() + mDragDistance;
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}
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break;
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case Bottom:
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if(mShowMode == ShowMode.PullOut){
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if(top < getMeasuredHeight() - mDragDistance)
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return getMeasuredHeight() - mDragDistance;
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}else{
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if(getSurfaceView().getTop() + dy >= getPaddingTop())
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return getPaddingTop();
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if(getSurfaceView().getTop() + dy <= getPaddingTop() - mDragDistance)
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return getPaddingTop() - mDragDistance;
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}
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}
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}
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return top;
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}
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@Override
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public boolean tryCaptureView(View child, int pointerId) {
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return child == getSurfaceView() || child == getBottomView();
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}
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@Override
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public int getViewHorizontalDragRange(View child) {
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return mDragDistance;
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}
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@Override
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public int getViewVerticalDragRange(View child) {
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return mDragDistance;
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}
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@Override
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public void onViewReleased(View releasedChild, float xvel, float yvel) {
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super.onViewReleased(releasedChild, xvel, yvel);
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for(SwipeListener l : mSwipeListeners)
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l.onHandRelease(SwipeLayout.this, xvel, yvel);
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if(releasedChild == getSurfaceView()){
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processSurfaceRelease(xvel, yvel);
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}else if(releasedChild == getBottomView()){
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if(getShowMode() == ShowMode.PullOut){
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processBottomPullOutRelease(xvel, yvel);
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}else if(getShowMode() == ShowMode.LayDown){
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processBottomLayDownMode(xvel, yvel);
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}
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}
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invalidate();
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}
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@Override
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public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
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int evLeft = getSurfaceView().getLeft(), evRight = getSurfaceView().getRight(),
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evTop = getSurfaceView().getTop(),evBottom = getSurfaceView().getBottom();
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if(changedView == getSurfaceView()){
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if(mShowMode == ShowMode.PullOut){
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if(mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right)
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getBottomView().offsetLeftAndRight(dx);
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else
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getBottomView().offsetTopAndBottom(dy);
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}
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}else if(changedView == getBottomView()){
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if(mShowMode == ShowMode.PullOut){
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getSurfaceView().offsetLeftAndRight(dx);
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getSurfaceView().offsetTopAndBottom(dy);
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}else{
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Rect rect = computeBottomLayDown(mDragEdge);
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getBottomView().layout(rect.left, rect.top, rect.right, rect.bottom);
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int newLeft = getSurfaceView().getLeft() + dx, newTop = getSurfaceView().getTop() + dy;
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if(mDragEdge == DragEdge.Left && newLeft < getPaddingLeft()) newLeft = getPaddingLeft();
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else if(mDragEdge == DragEdge.Right && newLeft > getPaddingLeft()) newLeft = getPaddingLeft();
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else if(mDragEdge == DragEdge.Top && newTop < getPaddingTop()) newTop = getPaddingTop();
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else if(mDragEdge == DragEdge.Bottom && newTop > getPaddingTop()) newTop = getPaddingTop();
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getSurfaceView().layout(newLeft, newTop, newLeft + getMeasuredWidth(), newTop + getMeasuredHeight());
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}
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}
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dispatchRevealEvent(evLeft, evTop, evRight, evBottom);
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dispatchSwipeEvent(evLeft, evTop, dx, dy);
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invalidate();
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}
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};
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/**
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* the dispatchRevealEvent method may not always get accurate position, it makes the view may not always get the event when the view is
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* totally show( fraction = 1), so , we need to calculate every time.
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* @param child
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* @param relativePosition
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* @param edge
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* @param surfaceLeft
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* @param surfaceTop
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* @param surfaceRight
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* @param surfaceBottom
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* @return
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*/
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protected boolean isViewTotallyFirstShowed(View child, Rect relativePosition, DragEdge edge, int surfaceLeft, int surfaceTop, int surfaceRight, int surfaceBottom){
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if(mShowEntirely.get(child))
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return false;
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int childLeft = relativePosition.left;
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int childRight = relativePosition.right;
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int childTop = relativePosition.top;
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int childBottom = relativePosition.bottom;
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boolean r = false;
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if(getShowMode() == ShowMode.LayDown) {
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if((edge == DragEdge.Right && surfaceRight <= childLeft)
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|| (edge == DragEdge.Left && surfaceLeft >= childRight)
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|| (edge == DragEdge.Top && surfaceTop >= childBottom)
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|| (edge == DragEdge.Bottom && surfaceBottom <= childTop))
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r = true;
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}
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else if(getShowMode() == ShowMode.PullOut){
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if((edge == DragEdge.Right && childRight <= getWidth())
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|| (edge == DragEdge.Left && childLeft >= getPaddingLeft())
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|| (edge == DragEdge.Top && childTop >= getPaddingTop())
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|| (edge == DragEdge.Bottom && childBottom <= getHeight()))
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r = true;
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}
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return r;
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}
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protected boolean isViewShowing(View child, Rect relativePosition, DragEdge availableEdge, int surfaceLeft, int surfaceTop, int surfaceRight, int surfaceBottom){
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int childLeft = relativePosition.left;
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int childRight = relativePosition.right;
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int childTop = relativePosition.top;
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int childBottom = relativePosition.bottom;
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if(getShowMode() == ShowMode.LayDown){
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switch (availableEdge){
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case Right:
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if(surfaceRight > childLeft && surfaceRight <= childRight){
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return true;
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}
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break;
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case Left:
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if(surfaceLeft < childRight && surfaceLeft >= childLeft){
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return true;
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}
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break;
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case Top:
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if(surfaceTop >= childTop && surfaceTop < childBottom){
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return true;
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}
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break;
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case Bottom:
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if(surfaceBottom > childTop && surfaceBottom <= childBottom){
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return true;
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}
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break;
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}
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}else if(getShowMode() == ShowMode.PullOut){
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switch (availableEdge){
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case Right:
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if(childLeft <= getWidth() && childRight > getWidth())
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return true;
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break;
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case Left:
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if(childRight >= getPaddingLeft() && childLeft < getPaddingLeft())
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return true;
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break;
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case Top:
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if(childTop < getPaddingTop() && childBottom >= getPaddingTop())
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return true;
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break;
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case Bottom:
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if(childTop < getHeight() && childTop >= getPaddingTop())
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return true;
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break;
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}
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}
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return false;
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}
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protected Rect getRelativePosition(View child){
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View t = child;
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Rect r = new Rect(t.getLeft(), t.getTop(), 0 , 0);
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while(t.getParent() != null && t != getRootView()){
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t = (View)t.getParent();
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if(t == this)
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break;
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r.left += t.getLeft();
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r.top += t.getTop();
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}
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r.right = r.left + child.getMeasuredWidth();
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r.bottom = r.top + child.getMeasuredHeight();
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return r;
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}
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private int mEventCounter = 0;
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protected void dispatchSwipeEvent(int surfaceLeft, int surfaceTop, int dx, int dy){
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DragEdge edge = getDragEdge();
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boolean open = true;
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if(edge == DragEdge.Left){
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if(dx < 0) open = false;
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}else if(edge == DragEdge.Right){
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if(dx > 0) open = false;
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}else if(edge == DragEdge.Top){
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if(dy < 0) open = false;
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}else if(edge == DragEdge.Bottom){
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if(dy > 0) open = false;
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}
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dispatchSwipeEvent(surfaceLeft, surfaceTop, open);
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}
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protected void dispatchSwipeEvent(int surfaceLeft, int surfaceTop, boolean open){
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safeBottomView();
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Status status = getOpenStatus();
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if(!mSwipeListeners.isEmpty()){
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mEventCounter++;
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for(SwipeListener l : mSwipeListeners){
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if(mEventCounter == 1){
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if(open){
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l.onStartOpen(this);
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}else{
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l.onStartClose(this);
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}
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}
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l.onUpdate(SwipeLayout.this, surfaceLeft - getPaddingLeft(), surfaceTop - getPaddingTop());
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}
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if(status == Status.Close){
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for(SwipeListener l : mSwipeListeners){
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l.onClose(SwipeLayout.this);
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}
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mEventCounter = 0;
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}
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if(status == Status.Open){
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getBottomView().setEnabled(true);
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for(SwipeListener l : mSwipeListeners){
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l.onOpen(SwipeLayout.this);
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}
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mEventCounter = 0;
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}
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}
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}
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/**
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* prevent bottom view get any touch event. Especially in LayDown mode.
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*/
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private void safeBottomView(){
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Status status = getOpenStatus();
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ViewGroup bottom = getBottomView();
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if(status == Status.Close){
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if(bottom.getVisibility() != INVISIBLE)
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bottom.setVisibility(INVISIBLE);
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}else {
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if(bottom.getVisibility() != VISIBLE)
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bottom.setVisibility(VISIBLE);
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}
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}
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protected void dispatchRevealEvent(final int surfaceLeft, final int surfaceTop, final int surfaceRight, final int surfaceBottom){
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if(mRevealListeners.isEmpty()) return;
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for(Map.Entry<View, ArrayList<OnRevealListener>> entry : mRevealListeners.entrySet()){
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View child = entry.getKey();
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Rect rect = getRelativePosition(child);
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if(isViewShowing(child,rect, mDragEdge, surfaceLeft, surfaceTop, surfaceRight, surfaceBottom)){
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mShowEntirely.put(child, false);
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int distance = 0;
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float fraction = 0f;
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if(getShowMode() == ShowMode.LayDown){
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switch (mDragEdge){
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case Left:
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distance = rect.left - surfaceLeft;
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fraction = distance/(float)child.getWidth();
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break;
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case Right:
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distance = rect.right - surfaceRight;
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fraction = distance/(float)child.getWidth();
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break;
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case Top:
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distance = rect.top - surfaceTop;
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fraction = distance/(float)child.getHeight();
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break;
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case Bottom:
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distance = rect.bottom - surfaceBottom;
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fraction = distance/(float)child.getHeight();
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break;
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}
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}else if(getShowMode() == ShowMode.PullOut){
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switch (mDragEdge){
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case Left:
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distance = rect.right - getPaddingLeft();
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fraction = distance / (float)child.getWidth();
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break;
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case Right:
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distance = rect.left - getWidth();
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fraction = distance / (float)child.getWidth();
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break;
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case Top:
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distance = rect.bottom - getPaddingTop();
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fraction = distance/(float)child.getHeight();
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break;
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case Bottom:
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distance = rect.top - getHeight();
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fraction = distance/(float)child.getHeight();
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break;
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}
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}
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for(OnRevealListener l : entry.getValue()){
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l.onReveal(child, mDragEdge, Math.abs(fraction), distance);
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if(Math.abs(fraction) == 1){
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mShowEntirely.put(child, true);
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}
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}
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}
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if(isViewTotallyFirstShowed(child, rect, mDragEdge, surfaceLeft, surfaceTop, surfaceRight, surfaceBottom)){
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mShowEntirely.put(child, true);
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for(OnRevealListener l : entry.getValue()){
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if(mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right)
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l.onReveal(child, mDragEdge, 1, child.getWidth());
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else
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l.onReveal(child, mDragEdge, 1, child.getHeight());
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}
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}
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}
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}
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@Override
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public void computeScroll() {
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super.computeScroll();
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if(mDragHelper.continueSettling(true)) {
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ViewCompat.postInvalidateOnAnimation(this);
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}
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}
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/**
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* {@link OnLayoutChangeListener} added in API 11.
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* I need to support it from API 8.
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*/
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public interface OnLayout{
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public void onLayout(SwipeLayout v);
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}
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private List<OnLayout> mOnLayoutListeners;
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public void addOnLayoutListener(OnLayout l){
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if(mOnLayoutListeners == null)
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mOnLayoutListeners = new ArrayList<>();
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mOnLayoutListeners.add(l);
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}
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public void removeOnLayoutListener(OnLayout l){
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if(mOnLayoutListeners != null)
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mOnLayoutListeners.remove(l);
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}
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@Override
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protected void onLayout(boolean changed, int l, int t, int r, int b) {
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int childCount = getChildCount();
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if(childCount != 2){
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throw new IllegalStateException("You need 2 views in SwipeLayout");
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}
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if(!(getChildAt(0) instanceof ViewGroup) || !(getChildAt(1) instanceof ViewGroup)){
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throw new IllegalArgumentException("The 2 children in SwipeLayout must be an instance of ViewGroup");
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}
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if(mShowMode == ShowMode.PullOut)
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layoutPullOut();
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else if(mShowMode == ShowMode.LayDown)
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layoutLayDown();
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safeBottomView();
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if(mOnLayoutListeners != null)
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for(int i = 0; i < mOnLayoutListeners.size(); i++){
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mOnLayoutListeners.get(i).onLayout(this);
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}
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}
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void layoutPullOut(){
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Rect rect = computeSurfaceLayoutArea(false);
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getSurfaceView().layout(rect.left, rect.top, rect.right, rect.bottom);
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rect = computeBottomLayoutAreaViaSurface(ShowMode.PullOut, rect);
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getBottomView().layout(rect.left, rect.top, rect.right, rect.bottom);
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bringChildToFront(getSurfaceView());
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}
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void layoutLayDown(){
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Rect rect = computeSurfaceLayoutArea(false);
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getSurfaceView().layout(rect.left, rect.top, rect.right, rect.bottom);
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rect = computeBottomLayoutAreaViaSurface(ShowMode.LayDown, rect);
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getBottomView().layout(rect.left, rect.top, rect.right, rect.bottom);
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bringChildToFront(getSurfaceView());
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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if(mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right)
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mDragDistance = getBottomView().getMeasuredWidth();
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else
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mDragDistance = getBottomView().getMeasuredHeight();
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}
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private boolean mTouchConsumedByChild = false;
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@Override
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public boolean onInterceptTouchEvent(MotionEvent ev) {
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if(!isEnabled() || !isEnabledInAdapterView()){
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return true;
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}
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if(!isSwipeEnabled()){
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return false;
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}
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for (SwipeDenier denier : mSwipeDeniers) {
|
if (denier != null && denier.shouldDenySwipe(ev)) {
|
return false;
|
}
|
}
|
//
|
//if a child wants to handle the touch event,
|
//then let it do it.
|
//
|
int action = ev.getActionMasked();
|
switch (action){
|
case MotionEvent.ACTION_DOWN:
|
Status status = getOpenStatus();
|
if(status == Status.Close){
|
mTouchConsumedByChild = childNeedHandleTouchEvent(getSurfaceView(), ev) != null;
|
}else if(status == Status.Open){
|
mTouchConsumedByChild = childNeedHandleTouchEvent(getBottomView(), ev) != null;
|
}
|
break;
|
case MotionEvent.ACTION_UP:
|
case MotionEvent.ACTION_CANCEL:
|
mTouchConsumedByChild = false;
|
}
|
|
if(mTouchConsumedByChild) return false;
|
return mDragHelper.shouldInterceptTouchEvent(ev);
|
}
|
|
/**
|
* if the ViewGroup children want to handle this event.
|
* @param v
|
* @param event
|
* @return
|
*/
|
private View childNeedHandleTouchEvent(ViewGroup v, MotionEvent event){
|
if(v == null) return null;
|
if(v.onTouchEvent(event))
|
return v;
|
|
int childCount = v.getChildCount();
|
for(int i = childCount - 1; i >= 0; i--){
|
View child = v.getChildAt(i);
|
if(child instanceof ViewGroup){
|
View grandChild = childNeedHandleTouchEvent((ViewGroup) child, event);
|
if(grandChild != null)
|
return grandChild;
|
}else{
|
if(childNeedHandleTouchEvent(v.getChildAt(i), event))
|
return v.getChildAt(i);
|
}
|
}
|
return null;
|
}
|
|
/**
|
* if the view (v) wants to handle this event.
|
* @param v
|
* @param event
|
* @return
|
*/
|
private boolean childNeedHandleTouchEvent(View v, MotionEvent event){
|
if(v == null) return false;
|
|
int[] loc = new int[2];
|
v.getLocationOnScreen(loc);
|
int left = loc[0], top = loc[1];
|
|
if(event.getRawX() > left && event.getRawX() < left + v.getWidth()
|
&& event.getRawY() > top && event.getRawY() < top + v.getHeight()){
|
return v.onTouchEvent(event);
|
}
|
|
return false;
|
}
|
|
private float sX = -1 , sY = -1;
|
@Override
|
public boolean onTouchEvent(MotionEvent event) {
|
if(!isEnabledInAdapterView() || !isEnabled())
|
return true;
|
|
if(!isSwipeEnabled())
|
return super.onTouchEvent(event);
|
|
int action = event.getActionMasked();
|
ViewParent parent = getParent();
|
if(parent == null)
|
return true;
|
gestureDetector.onTouchEvent(event);
|
Status status = getOpenStatus();
|
ViewGroup touching = null;
|
if(status == Status.Close){
|
touching = getSurfaceView();
|
}else if(status == Status.Open){
|
touching = getBottomView();
|
}
|
|
switch (action){
|
case MotionEvent.ACTION_DOWN:
|
mDragHelper.processTouchEvent(event);
|
parent.requestDisallowInterceptTouchEvent(true);
|
|
sX = event.getRawX();
|
sY = event.getRawY();
|
|
if(touching != null)
|
touching.setPressed(true);
|
|
return true;
|
case MotionEvent.ACTION_MOVE:{
|
if(sX == -1 || sY == -1){
|
// Trick:
|
// When in nested mode, we need to send a constructed ACTION_DOWN MotionEvent to mDragHelper, to help
|
// it initialize itself.
|
event.setAction(MotionEvent.ACTION_DOWN);
|
mDragHelper.processTouchEvent(event);
|
parent.requestDisallowInterceptTouchEvent(true);
|
sX = event.getRawX();
|
sY = event.getRawY();
|
return true;
|
}
|
|
float distanceX = event.getRawX() - sX;
|
float distanceY = event.getRawY() - sY;
|
float angle = Math.abs(distanceY / distanceX);
|
angle = (float)Math.toDegrees(Math.atan(angle));
|
|
boolean doNothing = false;
|
if(mDragEdge == DragEdge.Right){
|
boolean suitable = (status == Status.Open && distanceX > 0) || (status == Status.Close && distanceX < 0);
|
suitable = suitable || (status == Status.Middle);
|
|
if(angle > 20 || !suitable){
|
doNothing = true;
|
}
|
}
|
|
if(mDragEdge == DragEdge.Left){
|
boolean suitable = (status == Status.Open && distanceX < 0 ) || (status == Status.Close && distanceX > 0);
|
suitable = suitable || status == Status.Middle;
|
|
if(angle > 30 || ! suitable){
|
doNothing = true;
|
}
|
}
|
|
if(mDragEdge == DragEdge.Top){
|
boolean suitable = (status == Status.Open && distanceY < 0 ) || (status == Status.Close && distanceY > 0);
|
suitable = suitable || status == Status.Middle;
|
|
if(angle < 60 || ! suitable){
|
doNothing = true;
|
}
|
}
|
|
if(mDragEdge == DragEdge.Bottom){
|
boolean suitable = (status == Status.Open && distanceY > 0 ) || (status == Status.Close && distanceY < 0);
|
suitable = suitable || status == Status.Middle;
|
|
if(angle < 60 || ! suitable){
|
doNothing = true;
|
}
|
}
|
|
if(doNothing){
|
parent.requestDisallowInterceptTouchEvent(false);
|
return false;
|
}else{
|
if(touching != null){
|
touching.setPressed(false);
|
}
|
parent.requestDisallowInterceptTouchEvent(true);
|
mDragHelper.processTouchEvent(event);
|
}
|
break;
|
}
|
case MotionEvent.ACTION_UP:
|
case MotionEvent.ACTION_CANCEL:
|
sX = -1;
|
sY = -1;
|
if (touching != null) {
|
touching.setPressed(false);
|
}
|
|
parent.requestDisallowInterceptTouchEvent(true);
|
mDragHelper.processTouchEvent(event);
|
break;
|
default:
|
parent.requestDisallowInterceptTouchEvent(true);
|
mDragHelper.processTouchEvent(event);
|
}
|
|
return true;
|
}
|
|
/**
|
* if working in {@link AdapterView}, we should response {@link Adapter}
|
* isEnable(int position).
|
* @return true when item is enabled, else disabled.
|
*/
|
private boolean isEnabledInAdapterView(){
|
AdapterView adapterView = getAdapterView();
|
boolean enable = true;
|
if(adapterView != null){
|
Adapter adapter = adapterView.getAdapter();
|
if(adapter != null){
|
int p = adapterView.getPositionForView(SwipeLayout.this);
|
if(p >= 0){
|
if(adapter instanceof BaseAdapter){
|
enable = ((BaseAdapter) adapter).isEnabled(p);
|
}else if(adapter instanceof ListAdapter){
|
enable = ((ListAdapter) adapter).isEnabled(p);
|
}
|
}
|
}
|
}
|
return enable;
|
}
|
|
public void setSwipeEnabled(boolean enabled){
|
mSwipeEnabled = enabled;
|
}
|
|
public boolean isSwipeEnabled(){
|
return mSwipeEnabled;
|
}
|
|
private boolean insideAdapterView(){
|
return getAdapterView() != null;
|
}
|
|
private AdapterView getAdapterView(){
|
ViewParent t = getParent();
|
while(t != null){
|
if(t instanceof AdapterView){
|
return (AdapterView)t;
|
}
|
t = t.getParent();
|
}
|
return null;
|
}
|
|
private void performAdapterViewItemClick(MotionEvent e){
|
ViewParent t = getParent();
|
while(t != null) {
|
if(t instanceof AdapterView){
|
AdapterView view = (AdapterView)t;
|
int p = view.getPositionForView(SwipeLayout.this);
|
if( p != AdapterView.INVALID_POSITION &&
|
view.performItemClick(view.getChildAt(p), p, view.getAdapter().getItemId(p)))
|
return;
|
}else{
|
if(t instanceof View && ((View) t).performClick())
|
return;
|
}
|
t = t.getParent();
|
}
|
}
|
|
private GestureDetector gestureDetector = new GestureDetector(getContext(), new SwipeDetector());
|
class SwipeDetector extends GestureDetector.SimpleOnGestureListener{
|
@Override
|
public boolean onDown(MotionEvent e) {
|
return true;
|
}
|
|
/**
|
* Simulate the touch event lifecycle. If you use SwipeLayout in {@link AdapterView}
|
* ({@link android.widget.ListView}, {@link android.widget.GridView} etc.) It will manually call
|
* {@link AdapterView}.performItemClick, performItemLongClick.
|
* @param e
|
* @return
|
*/
|
@Override
|
public boolean onSingleTapUp(MotionEvent e) {
|
if(mDoubleClickListener == null){
|
performAdapterViewItemClick(e);
|
}
|
return true;
|
}
|
|
@Override
|
public boolean onSingleTapConfirmed(MotionEvent e) {
|
if(mDoubleClickListener != null){
|
performAdapterViewItemClick(e);
|
}
|
return true;
|
}
|
|
@Override
|
public void onLongPress(MotionEvent e) {
|
//fixme getparent == null 导致崩溃
|
// performLongClick();
|
}
|
|
@Override
|
public boolean onDoubleTap(MotionEvent e) {
|
if(mDoubleClickListener != null){
|
View target;
|
ViewGroup bottom = getBottomView();
|
ViewGroup surface = getSurfaceView();
|
if(e.getX() > bottom.getLeft() && e.getX() < bottom.getRight()
|
&& e.getY() > bottom.getTop() && e.getY() < bottom.getBottom()){
|
target = bottom;
|
}else{
|
target = surface;
|
}
|
mDoubleClickListener.onDoubleClick(SwipeLayout.this, target == surface);
|
}
|
return true;
|
}
|
}
|
|
public void setDragEdge(DragEdge dragEdge){
|
mDragEdge = dragEdge;
|
requestLayout();
|
}
|
|
/**
|
* set the drag distance, it will force set the bottom view's width or height via this value.
|
* @param max
|
*/
|
public void setDragDistance(int max){
|
if(max < 0)
|
throw new IllegalArgumentException("Drag distance can not be < 0");
|
mDragDistance = dp2px(max);
|
requestLayout();
|
}
|
|
/**
|
* There are 2 diffirent show mode.
|
* {@link ShowMode}.PullOut and {@link ShowMode}.LayDown.
|
* @param mode
|
*/
|
public void setShowMode(ShowMode mode){
|
mShowMode = mode;
|
requestLayout();
|
}
|
|
public DragEdge getDragEdge(){
|
return mDragEdge;
|
}
|
|
public int getDragDistance(){
|
return mDragDistance;
|
}
|
|
public ShowMode getShowMode(){
|
return mShowMode;
|
}
|
|
public ViewGroup getSurfaceView(){
|
return (ViewGroup)getChildAt(1);
|
}
|
|
public ViewGroup getBottomView(){
|
return (ViewGroup)getChildAt(0);
|
}
|
|
public enum Status {
|
Middle , Open, Close
|
}
|
|
/**
|
* get the open status.
|
* @return {@link Status}
|
* Open , Close or Middle.
|
*/
|
public Status getOpenStatus(){
|
int surfaceLeft = getSurfaceView().getLeft();
|
int surfaceTop = getSurfaceView().getTop();
|
if(surfaceLeft == getPaddingLeft() && surfaceTop == getPaddingTop())
|
return Status.Close;
|
|
if(surfaceLeft == (getPaddingLeft() - mDragDistance) || surfaceLeft == (getPaddingLeft() + mDragDistance)
|
|| surfaceTop == (getPaddingTop() - mDragDistance) || surfaceTop == (getPaddingTop() + mDragDistance))
|
return Status.Open;
|
|
return Status.Middle;
|
}
|
|
/**
|
* Process the surface release event.
|
* @param xvel
|
* @param yvel
|
*/
|
private void processSurfaceRelease(float xvel, float yvel){
|
if(xvel == 0 && getOpenStatus() == Status.Middle)
|
close();
|
|
if(mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right){
|
if(xvel > 0){
|
if(mDragEdge == DragEdge.Left) open();
|
else close();
|
}
|
if(xvel < 0){
|
if(mDragEdge == DragEdge.Left) close();
|
else open();
|
}
|
}else{
|
if(yvel > 0){
|
if(mDragEdge == DragEdge.Top) open();
|
else close();
|
}
|
if(yvel < 0){
|
if(mDragEdge == DragEdge.Top) close();
|
else open();
|
}
|
}
|
}
|
|
/**
|
* process bottom (PullOut mode) hand release event.
|
* @param xvel
|
* @param yvel
|
*/
|
private void processBottomPullOutRelease(float xvel, float yvel){
|
|
if(xvel == 0 && getOpenStatus() == Status.Middle)
|
close();
|
|
if(mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right){
|
if(xvel > 0){
|
if(mDragEdge == DragEdge.Left) open();
|
else close();
|
}
|
if(xvel < 0){
|
if(mDragEdge == DragEdge.Left) close();
|
else open();
|
}
|
}else{
|
if(yvel > 0) {
|
if (mDragEdge == DragEdge.Top) open();
|
else close();
|
}
|
|
if(yvel < 0){
|
if(mDragEdge == DragEdge.Top) close();
|
else open();
|
}
|
}
|
}
|
|
/**
|
* process bottom (LayDown mode) hand release event.
|
* @param xvel
|
* @param yvel
|
*/
|
private void processBottomLayDownMode(float xvel, float yvel){
|
|
if(xvel == 0 && getOpenStatus() == Status.Middle)
|
close();
|
|
int l = getPaddingLeft(), t = getPaddingTop();
|
|
if(xvel < 0 && mDragEdge == DragEdge.Right) l -= mDragDistance;
|
if(xvel > 0 && mDragEdge == DragEdge.Left) l += mDragDistance;
|
|
if(yvel > 0 && mDragEdge == DragEdge.Top) t += mDragDistance;
|
if(yvel < 0 && mDragEdge == DragEdge.Bottom) t -= mDragDistance;
|
|
mDragHelper.smoothSlideViewTo(getSurfaceView(), l, t);
|
invalidate();
|
}
|
|
/**
|
* smoothly open surface.
|
*/
|
public void open(){
|
open(true, true);
|
}
|
|
public void open(boolean smooth){
|
open(smooth, true);
|
}
|
|
public void open(boolean smooth, boolean notify){
|
ViewGroup surface = getSurfaceView(), bottom = getBottomView();
|
int dx,dy;
|
Rect rect = computeSurfaceLayoutArea(true);
|
if(smooth) {
|
mDragHelper.smoothSlideViewTo(getSurfaceView(), rect.left, rect.top);
|
}
|
else{
|
dx = rect.left - surface.getLeft();
|
dy = rect.top - surface.getTop();
|
surface.layout(rect.left, rect.top, rect.right, rect.bottom);
|
if(getShowMode() == ShowMode.PullOut){
|
Rect bRect = computeBottomLayoutAreaViaSurface(ShowMode.PullOut, rect);
|
bottom.layout(bRect.left, bRect.top, bRect.right, bRect.bottom);
|
}
|
if(notify) {
|
dispatchRevealEvent(rect.left, rect.top, rect.right, rect.bottom);
|
dispatchSwipeEvent(rect.left, rect.top, dx, dy);
|
}else{
|
safeBottomView();
|
}
|
}
|
invalidate();
|
}
|
|
/**
|
* smoothly close surface.
|
*/
|
public void close(){
|
close(true, true);
|
}
|
|
public void close(boolean smooth){
|
close(smooth, true);
|
}
|
|
/**
|
* close surface
|
* @param smooth smoothly or not.
|
* @param notify if notify all the listeners.
|
*/
|
public void close(boolean smooth, boolean notify){
|
ViewGroup surface = getSurfaceView();
|
int dx, dy;
|
if(smooth)
|
mDragHelper.smoothSlideViewTo(getSurfaceView(), getPaddingLeft(), getPaddingTop());
|
else {
|
Rect rect = computeSurfaceLayoutArea(false);
|
dx = rect.left - surface.getLeft();
|
dy = rect.top - surface.getTop();
|
surface.layout(rect.left, rect.top, rect.right, rect.bottom);
|
if(notify) {
|
dispatchRevealEvent(rect.left, rect.top, rect.right, rect.bottom);
|
dispatchSwipeEvent(rect.left, rect.top, dx, dy);
|
}else{
|
safeBottomView();
|
}
|
}
|
invalidate();
|
}
|
|
public void toggle(){
|
toggle(true);
|
}
|
|
public void toggle(boolean smooth){
|
if(getOpenStatus() == Status.Open)
|
close(smooth);
|
else if(getOpenStatus() == Status.Close)
|
open(smooth);
|
}
|
|
/**
|
* a helper function to compute the Rect area that surface will hold in.
|
* @param open open status or close status.
|
* @return
|
*/
|
private Rect computeSurfaceLayoutArea(boolean open){
|
int l = getPaddingLeft(), t = getPaddingTop();
|
if(open){
|
if(mDragEdge == DragEdge.Left) l = getPaddingLeft() + mDragDistance;
|
else if(mDragEdge == DragEdge.Right) l = getPaddingLeft() - mDragDistance;
|
else if(mDragEdge == DragEdge.Top) t = getPaddingTop() + mDragDistance;
|
else t = getPaddingTop() - mDragDistance;
|
}
|
return new Rect(l, t, l + getMeasuredWidth(), t + getMeasuredHeight());
|
}
|
|
|
private Rect computeBottomLayoutAreaViaSurface(ShowMode mode, Rect surfaceArea){
|
Rect rect = surfaceArea;
|
|
int bl = rect.left, bt = rect.top, br = rect.right, bb = rect.bottom;
|
if(mode == ShowMode.PullOut){
|
if (mDragEdge == DragEdge.Left) bl = rect.left - mDragDistance;
|
else if (mDragEdge == DragEdge.Right) bl = rect.right;
|
else if (mDragEdge == DragEdge.Top) bt = rect.top - mDragDistance;
|
else bt = rect.bottom;
|
|
if (mDragEdge == DragEdge.Left || mDragEdge == DragEdge.Right) {
|
bb = rect.bottom;
|
br = bl + getBottomView().getMeasuredWidth();
|
} else {
|
bb = bt + getBottomView().getMeasuredHeight();
|
br = rect.right;
|
}
|
}else if(mode == ShowMode.LayDown){
|
if(mDragEdge == DragEdge.Left) br = bl + mDragDistance;
|
else if(mDragEdge == DragEdge.Right) bl = br - mDragDistance;
|
else if(mDragEdge == DragEdge.Top) bb = bt + mDragDistance;
|
else bt = bb - mDragDistance;
|
|
}
|
return new Rect(bl, bt, br, bb);
|
|
|
}
|
|
private Rect computeBottomLayDown(DragEdge dragEdge){
|
int bl = getPaddingLeft(), bt = getPaddingTop();
|
int br, bb;
|
if(dragEdge == DragEdge.Right){
|
bl = getMeasuredWidth() - mDragDistance;
|
}else if(dragEdge == DragEdge.Bottom){
|
bt = getMeasuredHeight() - mDragDistance;
|
}
|
if(dragEdge == DragEdge.Left || dragEdge == DragEdge.Right){
|
br = bl + mDragDistance;
|
bb = bt + getMeasuredHeight();
|
}else{
|
br = bl + getMeasuredWidth();
|
bb = bt + mDragDistance;
|
}
|
return new Rect(bl, bt, br, bb);
|
}
|
|
public void setOnDoubleClickListener(DoubleClickListener doubleClickListener){
|
mDoubleClickListener = doubleClickListener;
|
}
|
|
public interface DoubleClickListener {
|
public void onDoubleClick(SwipeLayout layout, boolean surface);
|
}
|
|
private int dp2px(float dp){
|
return (int) (dp * getContext().getResources().getDisplayMetrics().density + 0.5f);
|
}
|
}
|
