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Added ability to customize the dragged view #95

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Added ability to customize the dragged view #95

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10 changes: 10 additions & 0 deletions LXReorderableCollectionViewFlowLayout/LXReorderableCollectionViewFlowLayout.h
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Original file line number Diff line number Diff line change
Expand Up @@ -34,8 +34,18 @@
@optional

- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout willBeginDraggingItemAtIndexPath:(NSIndexPath *)indexPath;
- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout willBeginDraggingItemAtIndexPath:(NSIndexPath *)indexPath currentlyDraggedView:(UIView *)currentlyDraggedView;

- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout configureAnimationPropertiesForBeginningDrag:(UIView *)currentlyDraggedView;

- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout didBeginDraggingItemAtIndexPath:(NSIndexPath *)indexPath;
- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout didBeginDraggingItemAtIndexPath:(NSIndexPath *)indexPath currentlyDraggedView:(UIView *)currentlyDraggedView;

- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout willEndDraggingItemAtIndexPath:(NSIndexPath *)indexPath;
- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout willEndDraggingItemAtIndexPath:(NSIndexPath *)indexPath currentlyDraggedView:(UIView *)currentlyDraggedView;

- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout configureAnimationPropertiesForEndingDrag:(UIView *)currentlyDraggedView;

- (void)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout didEndDraggingItemAtIndexPath:(NSIndexPath *)indexPath;

@end
18 changes: 18 additions & 0 deletions LXReorderableCollectionViewFlowLayout/LXReorderableCollectionViewFlowLayout.m
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Original file line number Diff line number Diff line change
Expand Up @@ -331,6 +331,10 @@ - (void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer

self.currentViewCenter = self.currentView.center;

if ([self.delegate respondsToSelector:@selector(collectionView:layout:willBeginDraggingItemAtIndexPath:currentlyDraggedView:)]) {
[self.delegate collectionView:self.collectionView layout:self willBeginDraggingItemAtIndexPath:self.selectedItemIndexPath currentlyDraggedView:self.currentView];
}

__weak typeof(self) weakSelf = self;
[UIView
animateWithDuration:0.3
Expand All @@ -342,6 +346,10 @@ - (void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer
strongSelf.currentView.transform = CGAffineTransformMakeScale(1.1f, 1.1f);
highlightedImageView.alpha = 0.0f;
imageView.alpha = 1.0f;

if ([strongSelf.delegate respondsToSelector:@selector(collectionView:layout:configureAnimationPropertiesForBeginningDrag:)]) {
[strongSelf.delegate collectionView:strongSelf.collectionView layout:strongSelf configureAnimationPropertiesForBeginningDrag:strongSelf.currentView];
}
}
}
completion:^(BOOL finished) {
Expand All @@ -352,6 +360,9 @@ - (void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer
if ([strongSelf.delegate respondsToSelector:@selector(collectionView:layout:didBeginDraggingItemAtIndexPath:)]) {
[strongSelf.delegate collectionView:strongSelf.collectionView layout:strongSelf didBeginDraggingItemAtIndexPath:strongSelf.selectedItemIndexPath];
}
if ([strongSelf.delegate respondsToSelector:@selector(collectionView:layout:didBeginDraggingItemAtIndexPath:currentlyDraggedView:)]) {
[strongSelf.delegate collectionView:strongSelf.collectionView layout:strongSelf didBeginDraggingItemAtIndexPath:strongSelf.selectedItemIndexPath currentlyDraggedView:strongSelf.currentView];
}
}
}];

Expand All @@ -365,6 +376,9 @@ - (void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer
if ([self.delegate respondsToSelector:@selector(collectionView:layout:willEndDraggingItemAtIndexPath:)]) {
[self.delegate collectionView:self.collectionView layout:self willEndDraggingItemAtIndexPath:currentIndexPath];
}
if ([self.delegate respondsToSelector:@selector(collectionView:layout:willEndDraggingItemAtIndexPath:currentlyDraggedView:)]) {
[self.delegate collectionView:self.collectionView layout:self willEndDraggingItemAtIndexPath:currentIndexPath currentlyDraggedView:self.currentView];
}

self.selectedItemIndexPath = nil;
self.currentViewCenter = CGPointZero;
Expand All @@ -383,6 +397,10 @@ - (void)handleLongPressGesture:(UILongPressGestureRecognizer *)gestureRecognizer
if (strongSelf) {
strongSelf.currentView.transform = CGAffineTransformMakeScale(1.0f, 1.0f);
strongSelf.currentView.center = layoutAttributes.center;

if ([strongSelf.delegate respondsToSelector:@selector(collectionView:layout:configureAnimationPropertiesForEndingDrag:)]) {
[strongSelf.delegate collectionView:strongSelf.collectionView layout:strongSelf configureAnimationPropertiesForEndingDrag:strongSelf.currentView];
}
}
}
completion:^(BOOL finished) {
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