Add a style

TYPagerControllerDemo.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

TYPagerControllerDemo.xcodeproj/xcuserdata/lee.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>TYPagerControllerDemo.xcscheme</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>

TYPagerControllerDemo/TYPagerController/TYPagerView.m

@@ -28,8 +28,8 @@ @interface TYPagerView ()<TYPagerViewLayoutDataSource, TYPagerViewLayoutDelegate
 
 @end
 
-@implementation TYPagerView
-
+@implementation TYPagerView {
+}
 #pragma mark - life cycle
 
 - (instancetype)initWithFrame:(CGRect)frame {

TYPagerControllerDemo/TYPagerController/TYPagerViewLayout.m

@@ -164,7 +164,7 @@ - (void)configurePropertys {
     _didLayoutSubViews = NO;
     _firstScrollToIndex = 0;
     _prefetchItemWillAddToSuperView = NO;
-    _addVisibleItemOnlyWhenScrollAnimatedEnd = NO;
+    _addVisibleItemOnlyWhenScrollAnimatedEnd = YES;
     _progressAnimateEnabel = YES;
     _adjustScrollViewInset = YES;
     _scrollAnimated = YES;
@@ -278,7 +278,7 @@ - (void)scrollToItemAtIndex:(NSInteger)index animate:(BOOL)animate {
     }
 
     [self scrollViewWillScrollToView:_scrollView animate:animate];
-    [_scrollView setContentOffset:CGPointMake(index * CGRectGetWidth(_scrollView.frame),0) animated:NO];
+    [_scrollView setContentOffset:CGPointMake(index * CGRectGetWidth(_scrollView.frame),0) animated:animate];
     [self scrollViewDidScrollToView:_scrollView animate:animate];
 }
 

TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBar.m

@@ -82,7 +82,7 @@ - (void)addCollectionView {
 
 - (void)addUnderLineView {
      UIView *progressView = [[UIView alloc]init];
-    progressView.backgroundColor = [UIColor redColor];
+    progressView.userInteractionEnabled = NO;
     [_collectionView addSubview:progressView];
     _progressView = progressView;
 }

TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBarLayout.h

@@ -17,6 +17,7 @@ typedef NS_ENUM(NSUInteger, TYPagerBarStyle) {
     TYPagerBarStyleProgressBounceView,
     TYPagerBarStyleProgressElasticView,
     TYPagerBarStyleCoverView,
+    TYPagerBarStyleHalfArcView,
 };
 
 @class TYTabPagerBar;
@@ -58,6 +59,9 @@ typedef NS_ENUM(NSUInteger, TYPagerBarStyle) {
 //   animate duration
 @property (nonatomic, assign) CGFloat animateDuration;  // default 0.3
 
+
+@property (nonatomic, strong) UIColor *HalfArcColor;
+
 - (instancetype)init NS_UNAVAILABLE;
 + (instancetype)new NS_UNAVAILABLE;
 

TYPagerControllerDemo/TYPagerController/TabPager/TYTabPagerBarLayout.m

@@ -18,6 +18,7 @@ @interface TYTabPagerBarLayout ()
 @end
 
 #define kUnderLineViewHeight 2
+#define kHalfArcProgressViewLineHeight 1
 
 @implementation TYTabPagerBarLayout
 
@@ -128,6 +129,8 @@ - (void)setBarStyle:(TYPagerBarStyle)barStyle
             self.progressHorEdging = -self.progressHeight/4;
             self.progressVerEdging = 3;
             break;
+        case TYPagerBarStyleHalfArcView:
+            break;
         default:
             break;
     }
@@ -191,6 +194,9 @@ - (void)adjustContentCellsCenterInBar {
 }
 
 - (CGRect)cellFrameWithIndex:(NSInteger)index {
+    if (index >= self.pagerTabBar.countOfItems || index < 0) {
+        index = 0;
+    }
     return [_pagerTabBar cellFrameWithIndex:index];
 }
 
@@ -212,14 +218,17 @@ - (void)transitionFromCell:(UICollectionViewCell<TYTabPagerBarCellProtocol> *)fr
             toCell.transform = CGAffineTransformIdentity;
         }
     };
-    if (animate) {
-        [UIView animateWithDuration:_animateDuration animations:^{
-            animateBlock();
-        }];
-    }else{
+    if (_barStyle == TYPagerBarStyleHalfArcView) {
         animateBlock();
+    }else {
+        if (animate) {
+            [UIView animateWithDuration:_animateDuration animations:^{
+                animateBlock();
+            }];
+        }else{
+            animateBlock();
+        }
     }
-
 }
 
 - (void)transitionFromCell:(UICollectionViewCell<TYTabPagerBarCellProtocol> *)fromCell toCell:(UICollectionViewCell<TYTabPagerBarCellProtocol> *)toCell progress:(CGFloat)progress {
@@ -258,17 +267,100 @@ - (void)setUnderLineFrameWithIndex:(NSInteger)index animated:(BOOL)animated
     CGFloat progressHorEdging = _progressWidth > 0 ? (cellFrame.size.width - _progressWidth)/2 : _progressHorEdging;
     CGFloat progressX = cellFrame.origin.x+progressHorEdging;
     CGFloat progressY = _barStyle == TYPagerBarStyleCoverView ? (cellFrame.size.height - _progressHeight)/2:(cellFrame.size.height - _progressHeight - _progressVerEdging);
-    CGFloat width = cellFrame.size.width-2*progressHorEdging;
-
-    if (animated) {
-        [UIView animateWithDuration:_animateDuration animations:^{
-            progressView.frame = CGRectMake(progressX, progressY, width, _progressHeight);
-        }];
+    CGFloat width = cellFrame.size.width-2 * progressHorEdging;
+    if (_barStyle == TYPagerBarStyleHalfArcView) {
+        [self creatHalfArcProgressViewWithIndex:index originView:progressView];
     }else {
-        progressView.frame = CGRectMake(progressX, progressY, width, _progressHeight);
+        if (animated) {
+            [UIView animateWithDuration:_animateDuration animations:^{
+                progressView.frame = CGRectMake(progressX, progressY, width, _progressHeight);
+            }];
+        }else {
+            if (_barStyle == TYPagerBarStyleHalfArcView) {
+                [self creatHalfArcProgressViewWithIndex:index originView:progressView];
+            }else {
+                progressView.frame = CGRectMake(progressX, progressY, width, _progressHeight);
+            }
+        }
     }
 }
-
+- (void)creatHalfArcProgressViewWithIndex:(NSInteger)index originView:(UIView *)oriView {
+    [[oriView.layer.sublayers copy] enumerateObjectsUsingBlock:^(CALayer *layer, NSUInteger idx, BOOL * _Nonnull stop) {
+        [layer removeFromSuperlayer];
+    }];
+    oriView.frame = self.pagerTabBar.collectionView.frame;
+    oriView.backgroundColor = [UIColor clearColor];
+    NSInteger countOfCell = self.pagerTabBar.countOfItems;
+    CGFloat margin = self.cellSpacing * 1.0 / 3.0;
+    UIBezierPath *bezierPath = [[UIBezierPath alloc] init];
+    NSMutableArray *pointArray = [NSMutableArray array];
+    for (int i = 0; i < countOfCell + 3; i ++) {
+        CGFloat point_x;
+        CGFloat point_y;
+        CGRect rect;
+        CGPoint point;
+        if (i == index + 1) {
+            rect = [self cellFrameWithIndex:i-1];
+            point_x = rect.origin.x - margin ;
+            point_y = rect.origin.y + margin;
+            point = CGPointMake(point_x, point_y);
+        }else if (i == index +2) {
+            rect = [self cellFrameWithIndex:i-2];
+            point_x = rect.origin.x + rect.size.width + margin;
+            point_y = rect.origin.y + margin;
+            point = CGPointMake(point_x, point_y);
+        }else if (i == index + 3) {
+            rect = [self cellFrameWithIndex:i-2];
+            CGPoint lastPoint = [pointArray[i-1] CGPointValue];
+            point_x = lastPoint.x;
+            point_y = (rect.origin.y + rect.size.height) * 4.0 / 5.0;
+            point = CGPointMake(point_x, point_y);
+        }else if (i == countOfCell+2) {
+            rect = [self cellFrameWithIndex:i-3];
+            point_x = rect.origin.x + rect.size.width + margin;
+            point_y = (rect.origin.y + rect.size.height) * 4.0 / 5.0;
+            point = CGPointMake(point_x, point_y);
+        }else {
+            if (i <= index) {
+                rect = [self cellFrameWithIndex:i];
+                point_x = rect.origin.x - margin;
+                point_y = (rect.origin.y + rect.size.height) * 4.0 / 5.0;
+                point = CGPointMake(point_x, point_y);
+            }else {
+                rect = [self cellFrameWithIndex:i-2];
+                point_x = rect.origin.x - margin;
+                point_y = (rect.origin.y + rect.size.height) * 4.0 / 5.0;
+                point = CGPointMake(point_x, point_y);
+            }
+        }
+        [pointArray addObject:[NSValue valueWithCGPoint:point]];
+        if (i == 0) {
+            [bezierPath moveToPoint:point];
+        }else if (i == index + 1) {
+            CGPoint curPoint = CGPointMake(point.x + 5,  point.y + 5);
+            [bezierPath addArcWithCenter:curPoint radius:5 startAngle:M_PI endAngle:M_PI * 3.0 / 2.0 clockwise:YES];
+        }else if (i == index + 2) {
+            CGPoint curPoint = CGPointMake(point.x - 5,  point.y + 5);
+            [bezierPath addArcWithCenter:curPoint radius:5 startAngle:M_PI *3.0 / 2.0 endAngle:0 clockwise:YES];
+        }else {
+            [bezierPath addLineToPoint:point];
+        }
+    }
+
+    CGPoint lastPoint = [pointArray.lastObject CGPointValue];
+    if (lastPoint.x < self.pagerTabBar.collectionView.frame.size.width - self.sectionInset.left) {
+        CGPoint point = CGPointMake(self.pagerTabBar.collectionView.frame.size.width - self.sectionInset.left, lastPoint.y);
+        [bezierPath addLineToPoint:point];
+    }
+
+
+    CAShapeLayer *borderLayer = [CAShapeLayer layer];
+    borderLayer.lineWidth = kHalfArcProgressViewLineHeight;
+    borderLayer.strokeColor = self.HalfArcColor.CGColor;
+    borderLayer.fillColor = [UIColor clearColor].CGColor;
+    borderLayer.path = bezierPath.CGPath;
+    [oriView.layer addSublayer:borderLayer];
+}
 - (void)setUnderLineFrameWithfromIndex:(NSInteger)fromIndex toIndex:(NSInteger)toIndex progress:(CGFloat)progress
 {
     UIView *progressView = _pagerTabBar.progressView;
@@ -324,8 +416,11 @@ - (void)setUnderLineFrameWithfromIndex:(NSInteger)fromIndex toIndex:(NSInteger)t
         progressX = (toCellFrame.origin.x+progressToEdging-(fromCellFrame.origin.x+progressFromEdging))*progress+fromCellFrame.origin.x+progressFromEdging;
         width = (toCellFrame.size.width-2*progressToEdging)*progress + (fromCellFrame.size.width-2*progressFromEdging)*(1-progress);
     }
-
-    progressView.frame = CGRectMake(progressX,progressY, width, _progressHeight);
+    if (_barStyle == TYPagerBarStyleHalfArcView) {
+
+    }else {
+        progressView.frame = CGRectMake(progressX,progressY, width, _progressHeight);
+    }
 }
 
 - (void)layoutSubViews {