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Refine ItemTouchHelper onChildDraw in PostFragmentBase.
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@Docile-Alligator
Docile-Alligator committed Oct 22, 2024
1 parent 451a594 commit 66d146a
Showing 1 changed file with 43 additions and 45 deletions.
88 changes: 43 additions & 45 deletions app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragmentBase.java
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Original file line number Diff line number Diff line change
Expand Up @@ -248,58 +248,56 @@ public int convertToAbsoluteDirection(int flags, int layoutDirection) {

@Override
public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
if (isCurrentlyActive) {
View itemView = viewHolder.itemView;
int horizontalOffset = (int) Utils.convertDpToPixel(16, activity);
if (dX > 0) {
if (dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
dX = (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold;
if (!exceedThreshold) {
exceedThreshold = true;
if (vibrateWhenActionTriggered) {
viewHolder.itemView.setHapticFeedbackEnabled(true);
viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
}
View itemView = viewHolder.itemView;
int horizontalOffset = (int) Utils.convertDpToPixel(16, activity);
if (dX > 0) {
if (dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
dX = (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold;
if (!exceedThreshold && isCurrentlyActive) {
exceedThreshold = true;
if (vibrateWhenActionTriggered) {
viewHolder.itemView.setHapticFeedbackEnabled(true);
viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
}
backgroundSwipeRight.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
} else {
exceedThreshold = false;
backgroundSwipeRight.setBounds(0, 0, 0, 0);
}
backgroundSwipeRight.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
} else {
exceedThreshold = false;
backgroundSwipeRight.setBounds(0, 0, 0, 0);
}

drawableSwipeRight.setBounds(itemView.getLeft() + ((int) dX) - horizontalOffset - drawableSwipeRight.getIntrinsicWidth(),
(itemView.getBottom() + itemView.getTop() - drawableSwipeRight.getIntrinsicHeight()) / 2,
itemView.getLeft() + ((int) dX) - horizontalOffset,
(itemView.getBottom() + itemView.getTop() + drawableSwipeRight.getIntrinsicHeight()) / 2);
backgroundSwipeRight.draw(c);
drawableSwipeRight.draw(c);
} else if (dX < 0) {
if (-dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
dX = -(viewHolder.itemView.getRight() - viewHolder.itemView.getLeft()) * swipeActionThreshold;
if (!exceedThreshold) {
exceedThreshold = true;
if (vibrateWhenActionTriggered) {
viewHolder.itemView.setHapticFeedbackEnabled(true);
viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
}
drawableSwipeRight.setBounds(itemView.getLeft() + ((int) dX) - horizontalOffset - drawableSwipeRight.getIntrinsicWidth(),
(itemView.getBottom() + itemView.getTop() - drawableSwipeRight.getIntrinsicHeight()) / 2,
itemView.getLeft() + ((int) dX) - horizontalOffset,
(itemView.getBottom() + itemView.getTop() + drawableSwipeRight.getIntrinsicHeight()) / 2);
backgroundSwipeRight.draw(c);
drawableSwipeRight.draw(c);
} else if (dX < 0) {
if (-dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
dX = -(viewHolder.itemView.getRight() - viewHolder.itemView.getLeft()) * swipeActionThreshold;
if (!exceedThreshold && isCurrentlyActive) {
exceedThreshold = true;
if (vibrateWhenActionTriggered) {
viewHolder.itemView.setHapticFeedbackEnabled(true);
viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
}
backgroundSwipeLeft.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
} else {
exceedThreshold = false;
backgroundSwipeLeft.setBounds(0, 0, 0, 0);
}
drawableSwipeLeft.setBounds(itemView.getRight() + ((int) dX) + horizontalOffset,
(itemView.getBottom() + itemView.getTop() - drawableSwipeLeft.getIntrinsicHeight()) / 2,
itemView.getRight() + ((int) dX) + horizontalOffset + drawableSwipeLeft.getIntrinsicWidth(),
(itemView.getBottom() + itemView.getTop() + drawableSwipeLeft.getIntrinsicHeight()) / 2);
backgroundSwipeLeft.draw(c);
drawableSwipeLeft.draw(c);
}
} else {
if (exceedThreshold && getPostAdapter() != null) {
getPostAdapter().onItemSwipe(viewHolder, dX > 0 ? ItemTouchHelper.END : ItemTouchHelper.START, swipeLeftAction, swipeRightAction);
backgroundSwipeLeft.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
} else {
exceedThreshold = false;
backgroundSwipeLeft.setBounds(0, 0, 0, 0);
}
drawableSwipeLeft.setBounds(itemView.getRight() + ((int) dX) + horizontalOffset,
(itemView.getBottom() + itemView.getTop() - drawableSwipeLeft.getIntrinsicHeight()) / 2,
itemView.getRight() + ((int) dX) + horizontalOffset + drawableSwipeLeft.getIntrinsicWidth(),
(itemView.getBottom() + itemView.getTop() + drawableSwipeLeft.getIntrinsicHeight()) / 2);
backgroundSwipeLeft.draw(c);
drawableSwipeLeft.draw(c);
}

if (!isCurrentlyActive && exceedThreshold && getPostAdapter() != null) {
getPostAdapter().onItemSwipe(viewHolder, dX > 0 ? ItemTouchHelper.END : ItemTouchHelper.START, swipeLeftAction, swipeRightAction);
exceedThreshold = false;
}
super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
}
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