Fix crash on E-Ink devices
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@@ -34,8 +34,6 @@ import androidx.recyclerview.widget.RecyclerView;
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import com.hippo.ehviewer.Settings;
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import com.hippo.yorozuya.NumberUtils;
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import fadeapp.widgets.ScrollLessRecyclerView;
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/**
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* Add setOnItemClickListener, setOnItemLongClickListener and setChoiceMode for
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* RecyclerView
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@@ -0,0 +1,349 @@
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package com.hippo.easyrecyclerview;
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import android.annotation.SuppressLint;
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import android.content.Context;
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import android.hardware.SensorManager;
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import android.util.AttributeSet;
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import android.view.MotionEvent;
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import android.view.ViewConfiguration;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.core.view.ViewCompat;
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import androidx.recyclerview.widget.BridgeRecyclerView;
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import androidx.recyclerview.widget.LinearLayoutManager;
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import androidx.recyclerview.widget.StaggeredGridLayoutManager;
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public class ScrollLessRecyclerView extends BridgeRecyclerView {
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private boolean isScrollBefore = false;
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private int initialTouchX;
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private int initialTouchY;
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// A context-specific coefficient adjusted to physical values.
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private float mPhysicalCoeff;
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// Fling friction
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private final float mFlingFriction = ViewConfiguration.getScrollFriction();
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private static final float DECELERATION_RATE = (float) (Math.log(0.78) / Math.log(0.9));
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public float pageScrollThreshold;
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private int defaultOverflowItemScrollKeep;
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private boolean enableScroll = false;
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public ScrollLessRecyclerView(@NonNull Context context) {
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super(context);
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init(context);
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}
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public ScrollLessRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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init(context);
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}
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public ScrollLessRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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init(context);
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}
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private void init(Context context) {
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float scale = context.getResources().getDisplayMetrics().density;
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final float ppi = scale * 160.0f;
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mPhysicalCoeff = SensorManager.GRAVITY_EARTH // g (m/s^2)
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* 39.37f // inch/meter
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* ppi
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* 0.84f; // look and feel tuning
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pageScrollThreshold = scale * 80;
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}
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public void setPageScrollThreshold(float pageScrollThreshold) {
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this.pageScrollThreshold = pageScrollThreshold;
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}
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@SuppressLint("ClickableViewAccessibility")
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@Override
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public boolean onTouchEvent(MotionEvent e) {
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if (enableScroll) {
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return super.onTouchEvent(e);
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}
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boolean superTouchResult = super.onTouchEvent(e);
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if (superTouchResult) {
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switch (e.getAction()) {
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case MotionEvent.ACTION_DOWN:
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initialTouchX = (int) (e.getX() + 0.5f);
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initialTouchY = (int) (e.getY() + 0.5f);
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break;
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case MotionEvent.ACTION_MOVE:
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if (initialTouchX < 0 || initialTouchY < 0) {
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initialTouchX = (int) (e.getX() + 0.5f);
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initialTouchY = (int) (e.getY() + 0.5f);
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}
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break;
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case MotionEvent.ACTION_UP:
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if (isScrollBefore) {
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int moveDistanceX = (int) (initialTouchX - e.getX() + flingMoveDistanceX);
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int moveDistanceY = (int) (initialTouchY - e.getY() + flingMoveDistanceY);
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onTouchScroll(moveDistanceX, moveDistanceY);
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initialTouchX = initialTouchY = -1;
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}
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break;
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}
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isScrollBefore = getScrollState() == SCROLL_STATE_DRAGGING;
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}
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return superTouchResult;
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}
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@Override
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public boolean scrollByInternal(int x, int y, MotionEvent ev, int type) {
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if (enableScroll) {
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return super.scrollByInternal(x, y, ev, type);
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}
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//disable drag scroll effect，e-ink screen don't need it
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return false;
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}
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double flingMoveDistanceX;
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double flingMoveDistanceY;
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@Override
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public boolean fling(int velocityX, int velocityY) {
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if (enableScroll) {
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return super.fling(velocityX, velocityY);
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}
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flingMoveDistanceX = getSplineFlingDistance(velocityX) * Math.signum(velocityX);
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flingMoveDistanceY = getSplineFlingDistance(velocityY) * Math.signum(velocityY);
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//disable fling scroll effect,e-ink screen don't need it
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return false;
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}
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boolean canScrollVertical = true;
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boolean canScrollHorizontally = true;
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protected void onTouchScroll(int dx, int dy) {
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canScrollVertical = true;
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canScrollHorizontally = true;
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LayoutManager layout = getLayoutManager();
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if (layout != null) {
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if (dy > pageScrollThreshold) {
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if (canScrollVertical && layout.canScrollVertically()) {
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canScrollVertical = false;
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onScrollDown();
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} else if (canScrollHorizontally && layout.canScrollHorizontally()) {
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canScrollHorizontally = false;
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onScrollRight();
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}
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} else if (dy < -pageScrollThreshold) {
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if (canScrollVertical && layout.canScrollVertically()) {
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canScrollVertical = false;
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onScrollUp();
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} else if (canScrollHorizontally && layout.canScrollHorizontally()) {
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canScrollHorizontally = false;
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onScrollLeft();
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}
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}
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if (dx > pageScrollThreshold) {
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if (canScrollVertical && layout.canScrollVertically()) {
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onScrollDown();
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} else if (canScrollHorizontally && layout.canScrollHorizontally()) {
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onScrollRight();
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}
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} else if (dx < -pageScrollThreshold) {
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if (canScrollVertical && layout.canScrollVertically()) {
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onScrollUp();
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} else if (canScrollHorizontally && layout.canScrollHorizontally()) {
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onScrollLeft();
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}
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}
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}
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}
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protected void onScrollLeft() {
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LayoutManager layout = getLayoutManager();
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if (layout instanceof LinearLayoutManager) {
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LinearLayoutManager realLayout = (LinearLayoutManager) layout;
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int firstVisiblePosition = realLayout.findFirstVisibleItemPosition();
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ViewHolder firstVisibleItem = findViewHolderForAdapterPosition(firstVisiblePosition);
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if (firstVisibleItem == null) {
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return;
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}
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//when the item width overscreen, findLastCompletelyVisibleItemPosition always return NO_POSITION
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if (firstVisibleItem.itemView.getMeasuredWidth() > getMeasuredWidth()) {
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super.scrollByInternal(-getMeasuredWidth() + defaultOverflowItemScrollKeep, 0, null, ViewCompat.TYPE_TOUCH);
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} else if (firstVisibleItem.itemView.getMeasuredWidth() == getMeasuredWidth()) {
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super.scrollByInternal(-getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
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} else {
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super.scrollByInternal(firstVisibleItem.itemView.getRight() - getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
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}
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} else if (layout instanceof StaggeredGridLayoutManager) {
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StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
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int[] firstVisiblePosition = realLayout.findFirstVisibleItemPositions(null);
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ViewHolder[] firstVisibleItems = new ViewHolder[firstVisiblePosition.length];
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for (int i = 0; i < firstVisiblePosition.length; i++) {
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firstVisibleItems[i] = findViewHolderForAdapterPosition(firstVisiblePosition[i]);
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}
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int scrollDistance = Integer.MAX_VALUE;
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for (ViewHolder firstVisibleItem : firstVisibleItems) {
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if (firstVisibleItem != null) {
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if (firstVisibleItem.itemView.getRight() < scrollDistance) {
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scrollDistance = firstVisibleItem.itemView.getRight();
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}
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}
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}
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if (scrollDistance == getMeasuredWidth()) {
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scrollDistance = 0;
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}
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super.scrollByInternal(scrollDistance - getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
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}
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}
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protected void onScrollRight() {
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LayoutManager layout = getLayoutManager();
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if (layout instanceof LinearLayoutManager) {
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LinearLayoutManager realLayout = (LinearLayoutManager) layout;
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int lastVisiblePosition = realLayout.findLastVisibleItemPosition();
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ViewHolder lastVisibleItem = findViewHolderForAdapterPosition(lastVisiblePosition);
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if (lastVisibleItem == null) {
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return;
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}
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//when the item width overflow screen, findLastCompletelyVisibleItemPosition always return NO_POSITION
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if (lastVisibleItem.itemView.getMeasuredWidth() > getMeasuredWidth()) {
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super.scrollByInternal(getMeasuredWidth() - defaultOverflowItemScrollKeep, 0, null, ViewCompat.TYPE_TOUCH);
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} else if (lastVisibleItem.itemView.getMeasuredWidth() == getMeasuredWidth()) {
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super.scrollByInternal(getMeasuredWidth(), 0, null, ViewCompat.TYPE_TOUCH);
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} else {
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super.scrollByInternal(lastVisibleItem.itemView.getLeft(), 0, null, ViewCompat.TYPE_TOUCH);
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}
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} else if (layout instanceof StaggeredGridLayoutManager) {
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StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
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int[] lastVisiblePosition = realLayout.findLastVisibleItemPositions(null);
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ViewHolder[] lastVisibleItems = new ViewHolder[lastVisiblePosition.length];
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for (int i = 0; i < lastVisiblePosition.length; i++) {
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lastVisibleItems[i] = findViewHolderForAdapterPosition(lastVisiblePosition[i]);
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}
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int scrollDistance = 0;
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for (ViewHolder lastVisibleItem : lastVisibleItems) {
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if (lastVisibleItem != null) {
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if (lastVisibleItem.itemView.getLeft() > scrollDistance) {
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scrollDistance = lastVisibleItem.itemView.getLeft();
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}
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}
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}
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if (scrollDistance == 0) {
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scrollDistance = getMeasuredWidth();
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}
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super.scrollByInternal(scrollDistance, 0, null, ViewCompat.TYPE_TOUCH);
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}
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}
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protected void onScrollUp() {
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LayoutManager layout = getLayoutManager();
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if (layout instanceof LinearLayoutManager) {
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LinearLayoutManager realLayout = (LinearLayoutManager) layout;
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int firstVisiblePosition = realLayout.findFirstVisibleItemPosition();
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ViewHolder firstVisibleItem = findViewHolderForAdapterPosition(firstVisiblePosition);
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if (firstVisibleItem == null) {
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return;
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}
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//when the item height overscreen, findLastCompletelyVisibleItemPosition always return NO_POSITION
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if (firstVisibleItem.itemView.getMeasuredHeight() > getMeasuredHeight()) {
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super.scrollByInternal(0, -getMeasuredHeight() + defaultOverflowItemScrollKeep, null, ViewCompat.TYPE_TOUCH);
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} else if (firstVisibleItem.itemView.getMeasuredHeight() == getMeasuredHeight()) {
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super.scrollByInternal(0, -getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
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} else {
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super.scrollByInternal(0, firstVisibleItem.itemView.getBottom() - getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
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}
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} else if (layout instanceof StaggeredGridLayoutManager) {
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StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
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int[] firstVisiblePosition = realLayout.findFirstVisibleItemPositions(null);
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ViewHolder[] firstVisibleItems = new ViewHolder[firstVisiblePosition.length];
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for (int i = 0; i < firstVisiblePosition.length; i++) {
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firstVisibleItems[i] = findViewHolderForAdapterPosition(firstVisiblePosition[i]);
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}
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int scrollDistance = Integer.MAX_VALUE;
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for (ViewHolder firstVisibleItem : firstVisibleItems) {
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if (firstVisibleItem != null) {
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if (firstVisibleItem.itemView.getBottom() < scrollDistance) {
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scrollDistance = firstVisibleItem.itemView.getBaseline();
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}
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}
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}
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if (scrollDistance == getMeasuredWidth()) {
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scrollDistance = 0;
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}
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super.scrollByInternal(0, scrollDistance - getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
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}
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}
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protected void onScrollDown() {
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LayoutManager layout = getLayoutManager();
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if (layout instanceof LinearLayoutManager) {
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LinearLayoutManager realLayout = (LinearLayoutManager) layout;
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int lastVisiblePosition = realLayout.findLastVisibleItemPosition();
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ViewHolder lastVisibleItem = findViewHolderForAdapterPosition(lastVisiblePosition);
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if (lastVisibleItem == null) {
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return;
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}
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//when the item height overflow screen, findLastCompletelyVisibleItemPosition always return NO_POSITION
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if (lastVisibleItem.itemView.getMeasuredHeight() > getMeasuredHeight()) {
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super.scrollByInternal(0, getMeasuredHeight() - defaultOverflowItemScrollKeep, null, ViewCompat.TYPE_TOUCH);
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} else if (lastVisibleItem.itemView.getMeasuredHeight() == getMeasuredHeight()) {
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super.scrollByInternal(0, getMeasuredHeight(), null, ViewCompat.TYPE_TOUCH);
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} else {
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super.scrollByInternal(0, lastVisibleItem.itemView.getTop(), null, ViewCompat.TYPE_TOUCH);
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}
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} else if (layout instanceof StaggeredGridLayoutManager) {
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StaggeredGridLayoutManager realLayout = (StaggeredGridLayoutManager) layout;
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int[] lastVisiblePosition = realLayout.findLastVisibleItemPositions(null);
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ViewHolder[] lastVisibleItems = new ViewHolder[lastVisiblePosition.length];
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for (int i = 0; i < lastVisiblePosition.length; i++) {
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lastVisibleItems[i] = findViewHolderForAdapterPosition(lastVisiblePosition[i]);
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}
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int scrollDistance = 0;
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for (ViewHolder lastVisibleItem : lastVisibleItems) {
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if (lastVisibleItem != null) {
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if (lastVisibleItem.itemView.getTop() > scrollDistance) {
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scrollDistance = lastVisibleItem.itemView.getTop();
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}
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}
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}
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if (scrollDistance == 0) {
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scrollDistance = getMeasuredHeight();
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}
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super.scrollByInternal(0, scrollDistance, null, ViewCompat.TYPE_TOUCH);
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}
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}
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@Override
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protected void onSizeChanged(int w, int h, int oldw, int oldh) {
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super.onSizeChanged(w, h, oldw, oldh);
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defaultOverflowItemScrollKeep = (int) (h * 0.05f);
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}
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private double getSplineDeceleration(int velocity) {
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return Math.log(0.35f * Math.abs(velocity) / (mFlingFriction * mPhysicalCoeff));
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}
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private double getSplineFlingDistance(int velocity) {
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final double l = getSplineDeceleration(velocity);
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final double decelMinusOne = DECELERATION_RATE - 1.0;
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return mFlingFriction * mPhysicalCoeff * Math.exp(DECELERATION_RATE / decelMinusOne * l);
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}
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public void setEnableScroll(boolean enableScroll) {
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this.enableScroll = enableScroll;
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}
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public boolean isEnableScroll() {
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return enableScroll;
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}
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}
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