Add onTapBlankArea and onTapAllArea callback.

zekunyan · Dec 11, 2018 · daec0bd · daec0bd
1 parent 0be50f9
commit daec0bd
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Showing 4 changed files with 48 additions and 2 deletions.
diff --git a/TTGTagCollectionView/Classes/TTGTagCollectionView.h b/TTGTagCollectionView/Classes/TTGTagCollectionView.h
@@ -93,6 +93,11 @@ typedef NS_ENUM(NSInteger, TTGTagCollectionAlignment) {
 @property (nonatomic, assign) BOOL showsHorizontalScrollIndicator;
 @property (nonatomic, assign) BOOL showsVerticalScrollIndicator;
 
+// Tap blank area callback
+@property (nonatomic, copy) void (^onTapBlankArea)(CGPoint location);
+// Tap all area callback
+@property (nonatomic, copy) void (^onTapAllArea)(CGPoint location);
+
 /**
  * Reload all tag cells
  */

diff --git a/TTGTagCollectionView/Classes/TTGTagCollectionView.m b/TTGTagCollectionView/Classes/TTGTagCollectionView.m
@@ -99,17 +99,27 @@ - (NSInteger)indexOfTagAt:(CGPoint)point {
 #pragma mark - Gesture
 
 - (void)onTapGesture:(UITapGestureRecognizer *)tapGesture {
+    CGPoint tapPointInCollectionView = [tapGesture locationInView:self];
+
     if (![self.dataSource respondsToSelector:@selector(numberOfTagsInTagCollectionView:)] ||
         ![self.dataSource respondsToSelector:@selector(tagCollectionView:tagViewForIndex:)] ||
         ![self.delegate respondsToSelector:@selector(tagCollectionView:didSelectTag:atIndex:)]) {
+        if (_onTapBlankArea) {
+            _onTapBlankArea(tapPointInCollectionView);
+        }
+        if (_onTapAllArea) {
+            _onTapAllArea(tapPointInCollectionView);
+        }
         return;
     }
 
-    CGPoint tapPoint = [tapGesture locationInView:_containerView];
+    CGPoint tapPointInScrollView = [tapGesture locationInView:_containerView];
+    BOOL hasLocatedToTag = NO;
 
     for (NSUInteger i = 0; i < [self.dataSource numberOfTagsInTagCollectionView:self]; i++) {
         UIView *tagView = [self.dataSource tagCollectionView:self tagViewForIndex:i];
-        if (CGRectContainsPoint(tagView.frame, tapPoint) && !tagView.isHidden) {
+        if (CGRectContainsPoint(tagView.frame, tapPointInScrollView) && !tagView.isHidden) {
+            hasLocatedToTag = YES;
             if ([self.delegate respondsToSelector:@selector(tagCollectionView:shouldSelectTag:atIndex:)]) {
                 if ([self.delegate tagCollectionView:self shouldSelectTag:tagView atIndex:i]) {
                     [self.delegate tagCollectionView:self didSelectTag:tagView atIndex:i];
@@ -119,6 +129,15 @@ - (void)onTapGesture:(UITapGestureRecognizer *)tapGesture {
             }
         }
     }
+
+    if (!hasLocatedToTag) {
+        if (_onTapBlankArea) {
+            _onTapBlankArea(tapPointInCollectionView);
+        }
+    }
+    if (_onTapAllArea) {
+        _onTapAllArea(tapPointInCollectionView);
+    }
 }
 
 #pragma mark - Override

diff --git a/TTGTagCollectionView/Classes/TTGTextTagCollectionView.h b/TTGTagCollectionView/Classes/TTGTextTagCollectionView.h
@@ -58,6 +58,7 @@
 
 // Extra data. You can use this to bind any object you want to each tag.
 @property (nonatomic, strong) NSObject *extraData;
+
 @end
 
 /// TTGTextTagCollectionView
@@ -140,6 +141,11 @@
 @property (nonatomic, assign) BOOL showsHorizontalScrollIndicator;
 @property (nonatomic, assign) BOOL showsVerticalScrollIndicator;
 
+// Tap blank area callback
+@property (nonatomic, copy) void (^onTapBlankArea)(CGPoint location);
+// Tap all area callback
+@property (nonatomic, copy) void (^onTapAllArea)(CGPoint location);
+
 // Reload
 - (void)reload;
 

diff --git a/TTGTagCollectionView/Classes/TTGTextTagCollectionView.m b/TTGTagCollectionView/Classes/TTGTextTagCollectionView.m
@@ -612,6 +612,22 @@ - (BOOL)showsVerticalScrollIndicator {
     return _tagCollectionView.showsVerticalScrollIndicator;
 }
 
+- (void)setOnTapBlankArea:(void (^)(CGPoint location))onTapBlankArea {
+    _tagCollectionView.onTapBlankArea = onTapBlankArea;
+}
+
+- (void (^)(CGPoint location))onTapBlankArea {
+    return _tagCollectionView.onTapBlankArea;
+}
+
+- (void)setOnTapAllArea:(void (^)(CGPoint location))onTapAllArea {
+    _tagCollectionView.onTapAllArea = onTapAllArea;
+}
+
+- (void (^)(CGPoint location))onTapAllArea {
+    return _tagCollectionView.onTapAllArea;
+}
+
 #pragma mark - Private methods
 
 - (void)updateAllLabelStyleAndFrame {