#import
typedef void(^titleChooseBlock)(NSInteger x);
typedefNS_ENUM(NSInteger,CBSegmentStyle) {
/**
* By default, there is a slider on the bottom.
*/
CBSegmentStyleSlider =0,
/**
* This flag will zoom the selected text label.
*/
CBSegmentStyleZoom =1,
};
@interface CBSegmentView : UIScrollView
@property (nonatomic, copy) titleChooseBlock titleChooseReturn;
/**
* Set segment titles and titleColor.
*
* @paramtitleArrayThe titles segment will show.
*/
- (void)setTitleArray:(NSArray *)titleArray;
/**
* Set segment titles and titleColor.
*
* @paramtitleArrayThe titles segment will show.
* @paramstyleThe segment style.
*/
- (void)setTitleArray:(NSArray *)titleArraywithStyle:(CBSegmentStyle)style;
/**
* Set segment titles and titleColor.
*
* @paramtitleArrayThe titles segment will show.
* @paramtitleColorThe normal title color.
* @paramselectedColorThe selected title color.
* @paramstyleThe segment style.
*/
- (void)setTitleArray:(NSArray *)titleArray
titleFont:(CGFloat)font
titleColor:(UIColor*)titleColor
titleSelectedColor:(UIColor*)selectedColor
withStyle:(CBSegmentStyle)style;
@end
@interfaceUIView(CBViewFrame)
@property (nonatomic, assign) CGFloat cb_Width;
@property (nonatomic, assign) CGFloat cb_Height;
@property (nonatomic, assign) CGFloat cb_CenterX;
@property (nonatomic, assign) CGFloat cb_CenterY;
@end
#import "CBSegmentView.h"
@interface CBSegmentView ()<UIScrollViewDelegate>
/**
* configuration.
*/
{
CGFloat_HeaderH;
UIColor*_titleColor;
UIColor*_titleSelectedColor;
CBSegmentStyle_SegmentStyle;
CGFloat_titleFont;
}
/**
* The bottom red slider.
*/
@property (nonatomic, weak) UIView *slider;
@property (nonatomic, strong) NSMutableArray *titleWidthArray;
@property (nonatomic, weak) UIButton *selectedBtn;
@end
#define CBColorA(r,g,b,a) [UIColor colorWithRed:(r)/255.0green:(g)/255.0blue:(b)/255.0alpha:a]
#define CBScreenH [UIScreen mainScreen].bounds.size.height
#define CBScreenW [UIScreen mainScreen].bounds.size.width
@implementation CBSegmentView
#pragma mark - delayLoading
- (NSMutableArray *)titleWidthArray {
if (!_titleWidthArray) {
_titleWidthArray = [NSMutableArray new];
}
return _titleWidthArray;
}
#pragma mark - Initialization
- (instancetype)initWithFrame:(CGRect)frame
{
self= [superinitWithFrame:frame];
if(self) {
self.bounces=NO;
self.showsHorizontalScrollIndicator = NO;
self.showsVerticalScrollIndicator = NO;
self.layer.borderColor=CBColorA(204,204,204,1).CGColor;
self.layer.borderWidth = 0.5;
_HeaderH= frame.size.height;
_SegmentStyle = CBSegmentStyleSlider;
_titleColor = [UIColor darkTextColor];
_titleSelectedColor=CBColorA(199,13,23,1);
_titleFont=15;
}
return self;
}
- (void)setTitleArray:(NSArray *)titleArray {
[self setTitleArray:titleArray withStyle:0];
}
- (void)setTitleArray:(NSArray *)titleArraywithStyle:(CBSegmentStyle)style {
[self setTitleArray:titleArray titleFont:0 titleColor:nil titleSelectedColor:nil withStyle:style];
}
- (void)setTitleArray:(NSArray *)titleArray
titleFont:(CGFloat)font
titleColor:(UIColor*)titleColor
titleSelectedColor:(UIColor*)selectedColor
withStyle:(CBSegmentStyle)style {
// set style
if(style !=0) {
_SegmentStyle= style;
}
if(font !=0) {
_titleFont= font;
}
if(titleColor) {
_titleColor= titleColor;
}
if(selectedColor) {
_titleSelectedColor= selectedColor;
}
if (style == CBSegmentStyleSlider) {
UIView*slider = [[UIViewalloc]init];
slider.frame=CGRectMake(0,_HeaderH-2,0,2);
slider.backgroundColor=_titleSelectedColor;
[selfaddSubview:slider];
self.slider= slider;
}
[self.titleWidthArray removeAllObjects];
CGFloattotalWidth =15;
CGFloatbtnSpace =15;
for(NSIntegeri =0; i
// cache title width
CGFloattitleWidth = [selfwidthOfTitle:titleArray[i]titleFont:_titleFont];
[self.titleWidthArray addObject:[NSNumber numberWithFloat:titleWidth]];
// creat button
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[selfaddSubview:btn];
CGFloatbtnW = titleWidth+20;
btn.frame= CGRectMake(totalWidth,0.5, btnW,_HeaderH-0.5-2);
btn.contentMode = UIViewContentModeCenter;
btn.titleLabel.textAlignment = NSTextAlignmentCenter;
btn.tag= i;
[btnsetTitle:titleArray[i] forState:UIControlStateNormal];
[btnsetTitleColor:_titleColor forState:UIControlStateNormal];
[btnsetTitleColor:_titleSelectedColor forState:UIControlStateSelected];
[btn.titleLabel setFont:[UIFont systemFontOfSize:_titleFont]];
[btnaddTarget:self action:@selector(titleButtonSelected:) forControlEvents:UIControlEventTouchUpInside];
totalWidth = totalWidth+btnW+btnSpace;
if(i ==0) {
btn.selected=YES;
self.selectedBtn= btn;
if (_SegmentStyle == CBSegmentStyleSlider) {
self.slider.cb_Width= titleWidth;
self.slider.cb_CenterX= btn.cb_CenterX;
}else if (_SegmentStyle == CBSegmentStyleZoom) {
self.selectedBtn.transform = CGAffineTransformMakeScale(1.3, 1.3);
}
}
}
totalWidth = totalWidth+btnSpace;
self.contentSize=CGSizeMake(totalWidth,0);
}
// button click
- (void)titleButtonSelected:(UIButton *)btn {
self.selectedBtn.selected = NO;
btn.selected=YES;
if (_SegmentStyle == CBSegmentStyleSlider) {
NSNumber* sliderWidth =self.titleWidthArray[btn.tag];
[UIView animateWithDuration:0.2 animations:^{
self.slider.cb_Width= sliderWidth.floatValue;
self.slider.cb_CenterX = btn.cb_CenterX;
}];
}else if (_SegmentStyle == CBSegmentStyleZoom) {
[UIView animateWithDuration:0.2 animations:^{
self.selectedBtn.transform = CGAffineTransformIdentity;
btn.transform = CGAffineTransformMakeScale(1.3, 1.3);
}];
}
self.selectedBtn= btn;
CGFloatoffsetX = btn.cb_CenterX-self.frame.size.width*0.5;
if(offsetX<0) {
offsetX =0;
}
if (offsetX>self.contentSize.width-self.frame.size.width) {
offsetX =self.contentSize.width-self.frame.size.width;
}
[self setContentOffset:CGPointMake(offsetX, 0) animated:YES];
if (self.titleChooseReturn) {
self.titleChooseReturn(btn.tag);
}
}
// cache title width
- (CGFloat)widthOfTitle:(NSString*)titletitleFont:(CGFloat)titleFont {
CGSize titleSize = [title boundingRectWithSize:CGSizeMake(MAXFLOAT, _HeaderH-2)
options:NSStringDrawingUsesLineFragmentOrigin
attributes:[NSDictionary dictionaryWithObject:[UIFont systemFontOfSize:titleFont] forKey:NSFontAttributeName]
context:nil].size;
returntitleSize.width;
}
@end
@implementationUIView(CBViewFrame)
- (void)setCb_Width:(CGFloat)cb_Width {
CGRectframe =self.frame;
frame.size.width= cb_Width;
self.frame= frame;
}
- (CGFloat)cb_Width {
return self.frame.size.width;
}
- (void)setCb_Height:(CGFloat)cb_Height {
CGRectframe =self.frame;
frame.size.height= cb_Height;
self.frame= frame;
}
- (CGFloat)cb_Height {
return self.frame.size.height;
}
- (void)setCb_CenterX:(CGFloat)cb_CenterX {
CGPointcenter =self.center;
center.x= cb_CenterX;
self.center= center;
}
- (CGFloat)cb_CenterX {
return self.center.x;
}
- (void)setCb_CenterY:(CGFloat)cb_CenterY {
CGPointcenter =self.center;
center.y= cb_CenterY;
self.center= center;
}
- (CGFloat)cb_CenterY {
return self.center.y;
}
@end
