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jiGuangXieZuo/ProductApp/ProductApp/BaseControl/ZJScrollPageView/ZJScrollSegmentView.m

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//
// ZJScrollSegmentView.m
// ZJScrollPageView
//
// Created by jasnig on 16/5/6.
// Copyright © 2016年 ZeroJ. All rights reserved.
//
#import "ZJScrollSegmentView.h"
#import "ZJTitleView.h"
#import "UIView+ZJFrame.h"
@interface ZJScrollSegmentView ()<UIScrollViewDelegate> {
CGFloat _currentWidth;
NSUInteger _currentIndex;
NSUInteger _oldIndex;
// BOOL _isScroll;
}
// 遮盖
@property (strong, nonatomic) UIView *coverLayer;
// 滚动scrollView
@property (strong, nonatomic) UIScrollView *scrollView;
// 背景ImageView
@property (strong, nonatomic) UIImageView *backgroundImageView;
// 附加的按钮
@property (strong, nonatomic) UIButton *extraBtn;
// 用于懒加载计算文字的rgba差值, 用于颜色渐变的时候设置
@property (strong, nonatomic) NSArray *deltaRGBA;
@property (strong, nonatomic) NSArray *selectedColorRGBA;
@property (strong, nonatomic) NSArray *normalColorRGBA;
/** 缓存所有标题label */
@property (nonatomic, strong) NSMutableArray *titleViews;
// 缓存计算出来的每个标题的宽度
@property (nonatomic, strong) NSMutableArray *titleWidths;
// 响应标题点击
@property (copy, nonatomic) TitleBtnOnClickBlock titleBtnOnClick;
@property (nonatomic,assign) NSInteger xianshi;
@end
@implementation ZJScrollSegmentView
static CGFloat const xGap = 5.0;
static CGFloat const wGap = 2*xGap;
static CGFloat const contentSizeXOff = 20.0;
#pragma mark - life cycle
- (instancetype)initWithFrame:(CGRect )frame segmentStyle:(ZJSegmentStyle *)segmentStyle delegate:(id<ZJScrollPageViewDelegate>)delegate titles:(NSArray *)titles titleDidClick:(TitleBtnOnClickBlock)titleDidClick {
if (self = [super initWithFrame:frame]) {
self.segmentStyle = segmentStyle;
self.titles = titles;
self.titleBtnOnClick = titleDidClick;
self.delegate = delegate;
///最开始为0
_currentIndex = 0;
///最开始为0
_oldIndex = 0;
_currentWidth = frame.size.width;
if (!self.segmentStyle.isScrollTitle) { // 不能滚动的时候就不要把缩放和遮盖或者滚动条同时使用, 否则显示效果不好
self.segmentStyle.scaleTitle = !(self.segmentStyle.isShowCover || self.segmentStyle.isShowLine);
}
if (self.segmentStyle.isShowImage) {//不要有以下的显示效果
self.segmentStyle.scaleTitle = NO;
self.segmentStyle.showCover = NO;
self.segmentStyle.gradualChangeTitleColor = NO;
}
// 设置了frame之后可以直接设置其他的控件的frame了, 不需要在layoutsubView()里面设置
[self setupSubviews];
[self setupUI];
}
return self;
}
- (void)setupSubviews {
[self addSubview:self.scrollView];
[self addScrollLineOrCoverOrExtraBtn];
[self setupTitles];
}
- (void)addScrollLineOrCoverOrExtraBtn {
if (self.segmentStyle.isShowLine) {
[self.scrollView addSubview:self.scrollLine];
}
if (self.segmentStyle.isShowCover) {
[self.scrollView insertSubview:self.coverLayer atIndex:0];
}
if (self.segmentStyle.isShowExtraButton) {
[self addSubview:self.extraBtn];
}
}
- (void)dealloc
{
#if DEBUG
NSLog(@"ZJScrollSegmentView ---- 销毁");
#endif
}
#pragma mark - button action
- (void)titleLabelOnClick:(UITapGestureRecognizer *)tapGes {
ZJTitleView *currentLabel = (ZJTitleView *)tapGes.view;
if (!currentLabel) {
return;
}
_currentIndex = currentLabel.tag;
[self adjustUIWhenBtnOnClickWithAnimate:true taped:YES];
}
- (void)extraBtnOnClick:(UIButton *)extraBtn {
if (self.extraBtnOnClick) {
self.extraBtnOnClick(extraBtn);
}
}
- (void)setNumber:(NSString *)number {
_number = number;
}
#pragma mark - private helper
- (void)setupTitles {
if (self.titles.count == 0) return;
///最开始为0
NSInteger index = 0;
for (NSString *title in self.titles) {
ZJTitleView *titleView = [[ZJTitleView alloc] initWithFrame:CGRectZero];
titleView.tag = index;
titleView.font = self.segmentStyle.titleFont;
titleView.text = title;
titleView.textColor = self.segmentStyle.normalTitleColor;
titleView.imagePosition = self.segmentStyle.imagePosition;
titleView.number.hidden = YES;
titleView.chouhaoxinxi = self.chouhaoxinxi;
if (self.delegate && [self.delegate respondsToSelector:@selector(setUpTitleView:forIndex:)]) {
[self.delegate setUpTitleView:titleView forIndex:index];
}
UITapGestureRecognizer *tapGes = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(titleLabelOnClick:)];
[titleView addGestureRecognizer:tapGes];
CGFloat titleViewWidth = [titleView titleViewWidth];
[self.titleWidths addObject:@(titleViewWidth)];
[self.titleViews addObject:titleView];
[self.scrollView addSubview:titleView];
index++;
}
}
- (void)setupUI {
if (self.titles.count == 0) return;
[self setupScrollViewAndExtraBtn];
[self setUpTitleViewsPosition];
[self setupScrollLineAndCover];
if (self.segmentStyle.isScrollTitle) { // 设置滚动区域
ZJTitleView *lastTitleView = (ZJTitleView *)self.titleViews.lastObject;
if (lastTitleView) {
self.scrollView.contentSize = CGSizeMake(CGRectGetMaxX(lastTitleView.frame) + contentSizeXOff, 0.0);
}
}
}
- (void)setupScrollViewAndExtraBtn {
CGFloat extraBtnW = 44.0;
CGFloat extraBtnY = 5.0;
// UILabel *lastLabel = _titleLabels.lastObject;
// CGFloat maxX = CGRectGetMaxX(lastLabel.frame) + 8;
CGFloat scrollW = self.extraBtn ? _currentWidth - extraBtnW : _currentWidth;
// if (maxX < _currentWidth) {
// scrollW = maxX;
// }
self.scrollView.frame = CGRectMake(0.0, 0.0, scrollW, self.zj_height);
if (self.extraBtn) {
self.extraBtn.frame = CGRectMake(scrollW , extraBtnY, extraBtnW, self.zj_height - 2*extraBtnY);
}
}
- (void)setUpTitleViewsPosition {
CGFloat titleX = 0.0;
CGFloat titleY = 0.0;
CGFloat titleW = 0.0;
CGFloat titleH = self.zj_height - self.segmentStyle.scrollLineHeight - self.segmentStyle.scrollLineSpacing;
if (!self.segmentStyle.isScrollTitle) {// 标题不能滚动, 平分宽度
titleW = self.scrollView.bounds.size.width / self.titles.count;
NSInteger index = 0;
for (ZJTitleView *titleView in self.titleViews) {
titleX = index * titleW;
titleView.frame = CGRectMake(titleX, titleY, titleW, titleH);
if (self.segmentStyle.isShowImage) {
[titleView adjustSubviewFrame];
}
index++;
}
} else {
NSInteger index = 0;
float lastLableMaxX = self.segmentStyle.titleMargin;
float addedMargin = 0.0f;
if (self.segmentStyle.isAutoAdjustTitlesWidth) {
float allTitlesWidth = self.segmentStyle.titleMargin;
for (int i = 0; i<self.titleWidths.count; i++) {
allTitlesWidth = allTitlesWidth + [self.titleWidths[i] floatValue] + self.segmentStyle.titleMargin;
}
addedMargin = allTitlesWidth < self.scrollView.bounds.size.width ? (self.scrollView.bounds.size.width - allTitlesWidth)/self.titleWidths.count : 0 ;
}
for (ZJTitleView *titleView in self.titleViews) {
titleW = [self.titleWidths[index] floatValue];
titleX = lastLableMaxX + addedMargin/2;
lastLableMaxX += (titleW + addedMargin + self.segmentStyle.titleMargin);
titleView.frame = CGRectMake(titleX, titleY, titleW, titleH);
if (self.segmentStyle.isShowImage) {
[titleView adjustSubviewFrame];
}
index++;
}
}
ZJTitleView *currentTitleView = (ZJTitleView *)self.titleViews[_currentIndex];
currentTitleView.currentTransformSx = 1.0;
if (currentTitleView) {
// 缩放, 设置初始的label的transform
if (self.segmentStyle.isScaleTitle) {
currentTitleView.currentTransformSx = self.segmentStyle.titleBigScale;
}
// 设置初始状态文字的颜色
currentTitleView.textColor = self.segmentStyle.selectedTitleColor;
if (self.segmentStyle.isShowImage) {
currentTitleView.selected = YES;
}
}
}
- (void)setupScrollLineAndCover {
ZJTitleView *firstLabel = (ZJTitleView *)self.titleViews[0];
CGFloat coverX = firstLabel.zj_x;
CGFloat coverW = self.segmentStyle.scrollLineWidth == 0 ? firstLabel.zj_width : self.segmentStyle.scrollLineWidth;
CGFloat coverH = self.segmentStyle.coverHeight;
CGFloat coverY = (self.bounds.size.height - coverH) * 0.5;
if (self.scrollLine) {
if (self.segmentStyle.isScrollTitle) {
self.scrollLine.frame = CGRectMake(coverX , self.zj_height - self.segmentStyle.scrollLineHeight + self.segmentStyle.scrollLineSpacing, coverW , self.segmentStyle.scrollLineHeight);
} else {
if (self.segmentStyle.isAdjustCoverOrLineWidth) {
coverW = [self.titleWidths[_currentIndex] floatValue] + wGap;
coverX = (firstLabel.zj_width - coverW) * 0.5;
}
self.scrollLine.frame = CGRectMake(coverX , self.zj_height - self.segmentStyle.scrollLineHeight + self.segmentStyle.scrollLineSpacing, coverW , self.segmentStyle.scrollLineHeight);
}
}
if (self.coverLayer) {
if (self.segmentStyle.isScrollTitle) {
self.coverLayer.frame = CGRectMake(coverX - xGap, coverY, coverW + wGap, coverH);
} else {
if (self.segmentStyle.isAdjustCoverOrLineWidth) {
coverW = [self.titleWidths[_currentIndex] floatValue] + wGap;
coverX = (firstLabel.zj_width - coverW) * 0.5;
}
self.coverLayer.frame = CGRectMake(coverX, coverY, coverW, coverH);
}
}
}
#pragma mark - public helper
- (void)adjustUIWhenBtnOnClickWithAnimate:(BOOL)animated taped:(BOOL)taped {
if (_currentIndex == _oldIndex && taped) { return; }
ZJTitleView *oldTitleView = (ZJTitleView *)self.titleViews[_oldIndex];
ZJTitleView *currentTitleView = (ZJTitleView *)self.titleViews[_currentIndex];
CGFloat animatedTime = animated ? 0.30 : 0.0;
__weak typeof(self) weakSelf = self;
[UIView animateWithDuration:animatedTime animations:^ {
oldTitleView.textColor = weakSelf.segmentStyle.normalTitleColor;
currentTitleView.textColor = weakSelf.segmentStyle.selectedTitleColor;
oldTitleView.selected = NO;
currentTitleView.selected = YES;
if (weakSelf.segmentStyle.isScaleTitle) {
oldTitleView.currentTransformSx = 1.0;
currentTitleView.currentTransformSx = weakSelf.segmentStyle.titleBigScale;
}
if (weakSelf.scrollLine) {
if (weakSelf.segmentStyle.isScrollTitle) {
weakSelf.scrollLine.zj_x = currentTitleView.zj_x;
weakSelf.scrollLine.zj_width = currentTitleView.zj_width;
} else {
if (self.segmentStyle.isAdjustCoverOrLineWidth) {
CGFloat scrollLineW = [self.titleWidths[_currentIndex] floatValue] + wGap;
CGFloat scrollLineX = currentTitleView.zj_x + (currentTitleView.zj_width - scrollLineW) * 0.5;
weakSelf.scrollLine.zj_x = scrollLineX;
weakSelf.scrollLine.zj_width = scrollLineW;
} else {
weakSelf.scrollLine.zj_x = currentTitleView.zj_x;
weakSelf.scrollLine.zj_width = currentTitleView.zj_width;
}
}
}
if (weakSelf.coverLayer) {
if (weakSelf.segmentStyle.isScrollTitle) {
weakSelf.coverLayer.zj_x = currentTitleView.zj_x - xGap;
weakSelf.coverLayer.zj_width = currentTitleView.zj_width + wGap;
} else {
if (self.segmentStyle.isAdjustCoverOrLineWidth) {
CGFloat coverW = [self.titleWidths[_currentIndex] floatValue] + wGap;
CGFloat coverX = currentTitleView.zj_x + (currentTitleView.zj_width - coverW) * 0.5;
weakSelf.coverLayer.zj_x = coverX;
weakSelf.coverLayer.zj_width = coverW;
} else {
weakSelf.coverLayer.zj_x = currentTitleView.zj_x;
weakSelf.coverLayer.zj_width = currentTitleView.zj_width;
}
}
}
} completion:^(BOOL finished) {
[weakSelf adjustTitleOffSetToCurrentIndex:_currentIndex];
}];
_oldIndex = _currentIndex;
if (self.titleBtnOnClick) {
self.titleBtnOnClick(currentTitleView, _currentIndex);
}
}
- (void)adjustUIWithProgress:(CGFloat)progress oldIndex:(NSInteger)oldIndex currentIndex:(NSInteger)currentIndex {
if (oldIndex < 0 ||
oldIndex >= self.titles.count ||
currentIndex < 0 ||
currentIndex >= self.titles.count
) {
return;
}
_oldIndex = currentIndex;
ZJTitleView *oldTitleView = (ZJTitleView *)self.titleViews[oldIndex];
ZJTitleView *currentTitleView = (ZJTitleView *)self.titleViews[currentIndex];
CGFloat xDistance = currentTitleView.zj_x - oldTitleView.zj_x;
CGFloat wDistance = currentTitleView.zj_width - oldTitleView.zj_width;
if (self.scrollLine) {
if (self.segmentStyle.isScrollTitle) {
self.scrollLine.zj_x = oldTitleView.zj_x + xDistance * progress;
self.scrollLine.zj_width = oldTitleView.zj_width + wDistance * progress;
} else {
if (self.segmentStyle.isAdjustCoverOrLineWidth) {
CGFloat oldScrollLineW = [self.titleWidths[oldIndex] floatValue] + wGap;
CGFloat currentScrollLineW = [self.titleWidths[currentIndex] floatValue] + wGap;
wDistance = currentScrollLineW - oldScrollLineW;
CGFloat oldScrollLineX = oldTitleView.zj_x + (oldTitleView.zj_width - oldScrollLineW) * 0.5;
CGFloat currentScrollLineX = currentTitleView.zj_x + (currentTitleView.zj_width - currentScrollLineW) * 0.5;
xDistance = currentScrollLineX - oldScrollLineX;
self.scrollLine.zj_x = oldScrollLineX + xDistance * progress;
self.scrollLine.zj_width = oldScrollLineW + wDistance * progress;
} else {
self.scrollLine.zj_x = oldTitleView.zj_x + xDistance * progress;
self.scrollLine.zj_width = oldTitleView.zj_width + wDistance * progress;
}
}
}
if (self.coverLayer) {
if (self.segmentStyle.isScrollTitle) {
self.coverLayer.zj_x = oldTitleView.zj_x + xDistance * progress - xGap;
self.coverLayer.zj_width = oldTitleView.zj_width + wDistance * progress + wGap;
} else {
if (self.segmentStyle.isAdjustCoverOrLineWidth) {
CGFloat oldCoverW = [self.titleWidths[oldIndex] floatValue] + wGap;
CGFloat currentCoverW = [self.titleWidths[currentIndex] floatValue] + wGap;
wDistance = currentCoverW - oldCoverW;
CGFloat oldCoverX = oldTitleView.zj_x + (oldTitleView.zj_width - oldCoverW) * 0.5;
CGFloat currentCoverX = currentTitleView.zj_x + (currentTitleView.zj_width - currentCoverW) * 0.5;
xDistance = currentCoverX - oldCoverX;
self.coverLayer.zj_x = oldCoverX + xDistance * progress;
self.coverLayer.zj_width = oldCoverW + wDistance * progress;
} else {
self.coverLayer.zj_x = oldTitleView.zj_x + xDistance * progress;
self.coverLayer.zj_width = oldTitleView.zj_width + wDistance * progress;
}
}
}
// 渐变
if (self.segmentStyle.isGradualChangeTitleColor) {
oldTitleView.textColor = [UIColor
colorWithRed:[self.selectedColorRGBA[0] floatValue] + [self.deltaRGBA[0] floatValue] * progress
green:[self.selectedColorRGBA[1] floatValue] + [self.deltaRGBA[1] floatValue] * progress
blue:[self.selectedColorRGBA[2] floatValue] + [self.deltaRGBA[2] floatValue] * progress
alpha:[self.selectedColorRGBA[3] floatValue] + [self.deltaRGBA[3] floatValue] * progress];
currentTitleView.textColor = [UIColor
colorWithRed:[self.normalColorRGBA[0] floatValue] - [self.deltaRGBA[0] floatValue] * progress
green:[self.normalColorRGBA[1] floatValue] - [self.deltaRGBA[1] floatValue] * progress
blue:[self.normalColorRGBA[2] floatValue] - [self.deltaRGBA[2] floatValue] * progress
alpha:[self.normalColorRGBA[3] floatValue] - [self.deltaRGBA[3] floatValue] * progress];
}
if (!self.segmentStyle.isScaleTitle) {
return;
}
CGFloat deltaScale = self.segmentStyle.titleBigScale - 1.0;
oldTitleView.currentTransformSx = self.segmentStyle.titleBigScale - deltaScale * progress;
currentTitleView.currentTransformSx = 1.0 + deltaScale * progress;
}
- (void)adjustTitleOffSetToCurrentIndex:(NSInteger)currentIndex {
_oldIndex = currentIndex;
// 重置渐变/缩放效果附近其他item的缩放和颜色
int index = 0;
for (ZJTitleView *titleView in _titleViews) {
if (index != currentIndex) {
titleView.textColor = self.segmentStyle.normalTitleColor;
titleView.currentTransformSx = 1.0;
titleView.selected = NO;
}
else {
titleView.textColor = self.segmentStyle.selectedTitleColor;
if (self.segmentStyle.isScaleTitle) {
titleView.currentTransformSx = self.segmentStyle.titleBigScale;
}
titleView.selected = YES;
}
index++;
}
//
if (self.scrollView.contentSize.width != self.scrollView.bounds.size.width + contentSizeXOff) {// 需要滚动
ZJTitleView *currentTitleView = (ZJTitleView *)_titleViews[currentIndex];
CGFloat offSetx = currentTitleView.center.x - _currentWidth * 0.5;
if (offSetx < 0) {
offSetx = 0;
}
CGFloat extraBtnW = self.extraBtn ? self.extraBtn.zj_width : 0.0;
CGFloat maxOffSetX = self.scrollView.contentSize.width - (_currentWidth - extraBtnW);
if (maxOffSetX < 0) {
maxOffSetX = 0;
}
if (offSetx > maxOffSetX) {
offSetx = maxOffSetX;
}
// if (!self.segmentStyle.isGradualChangeTitleColor) {
// int index = 0;
// for (ZJTitleView *titleView in _titleViews) {
// if (index != currentIndex) {
// titleView.textColor = self.segmentStyle.normalTitleColor;
// titleView.currentTransformSx = 1.0;
// titleView.selected = NO;
// }
// else {
// titleView.textColor = self.segmentStyle.selectedTitleColor;
// if (self.segmentStyle.isScaleTitle) {
// titleView.currentTransformSx = self.segmentStyle.titleBigScale;
// }
// titleView.selected = YES;
//
// }
//
// index++;
// }
// }
[self.scrollView setContentOffset:CGPointMake(offSetx, 0.0) animated:YES];
}
}
- (void)setSelectedIndex:(NSInteger)index animated:(BOOL)animated {
NSAssert(index >= 0 && index < self.titles.count, @"设置的下标不合法!!");
if (index < 0 || index >= self.titles.count) {
return;
}
_currentIndex = index;
[self adjustUIWhenBtnOnClickWithAnimate:animated taped:NO];
}
- (void)reloadTitlesWithNewTitles:(NSArray *)titles {
[self.scrollView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
///最开始为0
_currentIndex = 0;
///最开始为0
_oldIndex = 0;
self.titleWidths = nil;
self.titleViews = nil;
self.titles = nil;
self.titles = [titles copy];
if (self.titles.count == 0) return;
for (UIView *subview in self.subviews) {
[subview removeFromSuperview];
}
[self setupSubviews];
[self setupUI];
///最开始为0
[self setSelectedIndex:0 animated:YES];
}
#pragma mark - getter --- setter
- (UIView *)scrollLine {
if (!self.segmentStyle.isShowLine) {
return nil;
}
if (!_scrollLine) {
UIView *lineView = [[UIView alloc] init];
lineView.backgroundColor = self.segmentStyle.scrollLineColor;
lineView.layer.cornerRadius = 1.5;
lineView.layer.masksToBounds = YES;
_scrollLine = lineView;
}
return _scrollLine;
}
- (UIView *)coverLayer {
if (!self.segmentStyle.isShowCover) {
return nil;
}
if (_coverLayer == nil) {
UIView *coverView = [[UIView alloc] init];
coverView.backgroundColor = self.segmentStyle.coverBackgroundColor;
coverView.layer.cornerRadius = self.segmentStyle.coverCornerRadius;
coverView.layer.masksToBounds = YES;
_coverLayer = coverView;
}
return _coverLayer;
}
- (UIButton *)extraBtn {
if (!self.segmentStyle.showExtraButton) {
return nil;
}
if (!_extraBtn) {
UIButton *btn = [UIButton new];
[btn addTarget:self action:@selector(extraBtnOnClick:) forControlEvents:UIControlEventTouchUpInside];
NSString *imageName = self.segmentStyle.extraBtnBackgroundImageName ? self.segmentStyle.extraBtnBackgroundImageName : @"";
[btn setImage:[UIImage imageNamed:imageName] forState:UIControlStateNormal];
btn.backgroundColor = [UIColor whiteColor];
// 设置边缘的阴影效果
btn.layer.shadowColor = [UIColor whiteColor].CGColor;
btn.layer.shadowOffset = CGSizeMake(-5, 0);
btn.layer.shadowOpacity = 1;
_extraBtn = btn;
}
return _extraBtn;
}
- (UIScrollView *)scrollView {
if (!_scrollView) {
UIScrollView *scrollView = [[UIScrollView alloc] init];
scrollView.showsHorizontalScrollIndicator = NO;
scrollView.scrollsToTop = NO;
scrollView.bounces = self.segmentStyle.isSegmentViewBounces;
scrollView.pagingEnabled = NO;
scrollView.delegate = self;
_scrollView = scrollView;
}
return _scrollView;
}
- (UIImageView *)backgroundImageView {
if (!_backgroundImageView) {
UIImageView *imageView = [[UIImageView alloc] initWithFrame:self.bounds];
///最开始为0
[self insertSubview:imageView atIndex:0];
_backgroundImageView = imageView;
}
return _backgroundImageView;
}
- (void)setBackgroundImage:(UIImage *)backgroundImage {
_backgroundImage = backgroundImage;
if (backgroundImage) {
self.backgroundImageView.image = backgroundImage;
}
}
- (NSMutableArray *)titleViews
{
if (_titleViews == nil) {
_titleViews = [NSMutableArray array];
}
return _titleViews;
}
- (NSMutableArray *)titleWidths
{
if (_titleWidths == nil) {
_titleWidths = [NSMutableArray array];
}
return _titleWidths;
}
- (NSArray *)deltaRGBA {
if (_deltaRGBA == nil) {
NSArray *normalColorRgb = self.normalColorRGBA;
NSArray *selectedColorRgb = self.selectedColorRGBA;
NSArray *delta;
if (normalColorRgb && selectedColorRgb) {
CGFloat deltaR = [normalColorRgb[0] floatValue] - [selectedColorRgb[0] floatValue];
CGFloat deltaG = [normalColorRgb[1] floatValue] - [selectedColorRgb[1] floatValue];
CGFloat deltaB = [normalColorRgb[2] floatValue] - [selectedColorRgb[2] floatValue];
CGFloat deltaA = [normalColorRgb[3] floatValue] - [selectedColorRgb[3] floatValue];
delta = [NSArray arrayWithObjects:@(deltaR), @(deltaG), @(deltaB), @(deltaA), nil];
_deltaRGBA = delta;
}
}
return _deltaRGBA;
}
- (NSArray *)normalColorRGBA {
if (!_normalColorRGBA) {
NSArray *normalColorRGBA = [self getColorRGBA:self.segmentStyle.normalTitleColor];
NSAssert(normalColorRGBA, @"设置普通状态的文字颜色时 请使用RGBA空间的颜色值");
_normalColorRGBA = normalColorRGBA;
}
return _normalColorRGBA;
}
- (NSArray *)selectedColorRGBA {
if (!_selectedColorRGBA) {
NSArray *selectedColorRGBA = [self getColorRGBA:self.segmentStyle.selectedTitleColor];
NSAssert(selectedColorRGBA, @"设置选中状态的文字颜色时 请使用RGBA空间的颜色值");
_selectedColorRGBA = selectedColorRGBA;
}
return _selectedColorRGBA;
}
- (NSArray *)getColorRGBA:(UIColor *)color {
CGFloat numOfcomponents = CGColorGetNumberOfComponents(color.CGColor);
NSArray *rgbaComponents;
if (numOfcomponents == 4) {
const CGFloat *components = CGColorGetComponents(color.CGColor);
rgbaComponents = [NSArray arrayWithObjects:@(components[0]), @(components[1]), @(components[2]), @(components[3]), nil];
}
return rgbaComponents;
}
@end
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