#pragma mark 判断点击的位置是否在 range内
/**将点击的位置转换成字符串的偏移量，如果没有找到，则返回-1view：viewpoint：点击位置frameRef：当前view的frameRef*/
+ (CFIndex)wkj_touchContentOffsetInView:(UIView *)viewpoint:(CGPoint)pointframeRef:(CTFrameRef)frameRef{CTFrameRef textFrame = frameRef;CFArrayRef lines = CTFrameGetLines(textFrame);if (!lines) {return -1;}CFIndex count = CFArrayGetCount(lines);// 获得每一行的origin坐标
    CGPoint origins[count];CTFrameGetLineOrigins(textFrame, CFRangeMake(0,0), origins);// 翻转坐标系CGAffineTransform transform =  CGAffineTransformMakeTranslation(0, view.bounds.size.height);transform = CGAffineTransformScale(transform, 1.f, -1.f);CFIndex idx = -1;for (int i = 0; i < count; i++) {CGPoint linePoint = origins[i];CTLineRef line = CFArrayGetValueAtIndex(lines, i);// 获得每一行的CGRect信息CGRect flippedRect = [self wkj_getLineBounds:line point:linePoint];CGRect rect = CGRectApplyAffineTransform(flippedRect, transform);if (CGRectContainsPoint(rect, point)) {// 将点击的坐标转换成相对于当前行的坐标cocoapodsCGPoint relativePoint = CGPointMake(point.x-CGRectGetMinX(rect),point.y-CGRectGetMinY(rect));// 获得当前点击坐标对应的字符串偏移idx = CTLineGetStringIndexForPosition(line, relativePoint);}}return idx;
}+ (CGRect)wkj_getLineBounds:(CTLineRef)line point:(CGPoint)point {CGFloat ascent = 0.0f;CGFloat descent = 0.0f;CGFloat leading = 0.0f;CGFloat width = (CGFloat)CTLineGetTypographicBounds(line, &ascent, &descent, &leading);CGFloat height = ascent + descent;return CGRectMake(point.x, point.y - descent, width, height);
}/**此处判断根据上面返回的字符串的偏移量，对比range是否在点击的位置*/
+ (BOOL)wkj_judgeAtIndex:(CFIndex)index range:(NSRange)range {if (NSLocationInRange(index, range)) {///点击处在range内return YES;}return NO;
}

#pragma mark 通过range获取rect集合【用于划线、涂色】
+ (NSArray*)wkj_frameGetFrameOfStringInRange:(CTFrameRef)frameRef range:(CFRange)range{CFRange frameRefRange = CTFrameGetStringRange(frameRef);range = [self wkj_cfRangeInsection:frameRefRange range:range];if ([self wkj_cfRangeEqualToRange:range range:CFRangeZero]) {return nil;}NSArray *lines = (NSArray*)CTFrameGetLines(frameRef);NSInteger lineCount = [lines count];//获取整个CTFrame的大小CGPathRef path = CTFrameGetPath(frameRef);CGRect frameRefRect = CGPathGetBoundingBox(path);//获取所有行的起点CGPoint *origins = (CGPoint*)malloc(lineCount * sizeof(CGPoint));CTFrameGetLineOrigins(frameRef, CFRangeMake(0, 0), origins);NSMutableArray *rects = [NSMutableArray array];for (CFIndex index = 0; index<lines.count; index++) {CTLineRef line = (__bridge CTLineRef)[lines objectAtIndex:index];CFRange rangeOfLine = CTLineGetStringRange(line);CFRange rangeOfInsection = [self wkj_cfRangeInsection:rangeOfLine range:range];if (![self wkj_cfRangeEqualToRange:rangeOfInsection range:CFRangeZero]) {CGRect frame = [self wkj_lineGetFrame:line point:origins[index] range:rangeOfInsection];frame = CGRectOffset(frame, frameRefRect.origin.x, frameRefRect.origin.y);[rects addObject:[NSValue valueWithCGRect:frame]];}}free(origins);return [rects copy];
}+ (CGRect)wkj_lineGetFrame:(CTLineRef)linepoint:(CGPoint)originrange:(CFRange)range{CFRange lineRange = CTLineGetStringRange(line);range = [self wkj_cfRangeInsection:lineRange range:range];CGFloat trailingWhitespaceWidth = CTLineGetTrailingWhitespaceWidth(line);if ([self wkj_cfRangeGetEndLocation:range]==[self wkj_cfRangeGetEndLocation:lineRange]&&trailingWhitespaceWidth>0) {--range.length;}CGFloat xStart = CTLineGetOffsetForStringIndex(line, range.location, NULL);CGFloat xEnd = CTLineGetOffsetForStringIndex(line, [self wkj_cfRangeGetEndLocation:range]+1, NULL);CGFloat ascent, descent, leading;CTLineGetTypographicBounds(line, &ascent, &descent, &leading);CGRect selectionRect = CGRectMake(origin.x + xStart,origin.y - descent,xEnd - xStart,ascent + descent + leading);return selectionRect;
}+ (CFRange)wkj_cfRangeInsection:(CFRange)range1 range:(CFRange)range2{if ([self wkj_cfRangeGreaterThanRange:range1 range:range2]||[self wkj_cfRangeGreaterThanRange:range2 range:range1]) {return CFRangeZero;}CFIndex beginLocation = MAX(range1.location, range2.location);CFIndex endLocation = MIN([self wkj_cfRangeGetEndLocation:range1], [self wkj_cfRangeGetEndLocation:range2]);return [self wkj_cfRangeMakeWithInterval:beginLocation endIndex:endLocation];
}+ (BOOL)wkj_cfRangeGreaterThanRange:(CFRange)range1 range:(CFRange)range2{return range1.location>[self wkj_cfRangeGetEndLocation:range2];
}
+ (CFIndex)wkj_cfRangeGetEndLocation:(CFRange)range{return range.location+range.length-1;
}
+ (CFRange)wkj_cfRangeMakeWithInterval:(CFIndex)startIndex endIndex:(CFIndex)endIndex{return CFRangeMake(startIndex, endIndex - startIndex + 1);
}
+ (BOOL)wkj_cfRangeEqualToRange:(CFRange)range1 range:(CFRange)range2{return range1.location == range2.location&&range1.length==range2.length;
}

- (void)wkj_drawLineForSelectArea{CGContextRef context = UIGraphicsGetCurrentContext();CGContextSetFillColorWithColor(context, [[UIColor redColor] colorWithAlphaComponent:0.3].CGColor);for (NSValue *rectValue in _arraySelectRect) {CGRect rect = [rectValue CGRectValue];rect.origin.y -= 2.5;///划线时可设置高度为1  涂色是可根据字体大小设置rect.size.height = 1;rect.size.width -= 1.5;CGContextFillRect(context, rect);}
}

#pragma mark 分页
/**CoreText 分页str: NSAttributedString属性字符串textFrame: 绘制区域*/+ (NSArray *)wkj_coreTextPaging:(NSAttributedString *)str textArea:(CGRect)textFrame{///分页NSAttributedString结果
    // NSMutableArray *arrayPagingStr = [NSMutableArray array];///分页NSRange结果NSMutableArray *arrayPagingRange = [NSMutableArray array];CFAttributedStringRef cfStrRef = (__bridge CFAttributedStringRef)str;CTFramesetterRef framesetterRef = CTFramesetterCreateWithAttributedString(cfStrRef);CGPathRef path = CGPathCreateWithRect(textFrame, NULL);int textPos = 0;NSUInteger strLength = [str length];while (textPos < strLength)  {//设置路径CTFrameRef frame = CTFramesetterCreateFrame(framesetterRef, CFRangeMake(textPos, 0), path, NULL);CFRange frameRange = CTFrameGetVisibleStringRange(frame);NSRange range = NSMakeRange(frameRange.location, frameRange.length);[arrayPagingRange addObject:[NSValue valueWithRange:range]];
        // [arrayPagingStr addObject:[str attributedSubstringFromRange:range]];//移动textPos += frameRange.length;CFRelease(frame);}CGPathRelease(path);CFRelease(framesetterRef);
    // return arrayPagingStr;return arrayPagingRange;
}

/**str:NSAttributedString 内容属性width: 绘制的宽度*/
+ (CGFloat)coretextContentHeight:(NSAttributedString *)str width:(CGFloat)width{//创建CTFramesetterRefCTFramesetterRef framesetterRef = CTFramesetterCreateWithAttributedString((CFAttributedStringRef)str);// 获得要绘制的区域高度CGSize restrictSize = CGSizeMake(width, CGFLOAT_MAX);CGSize coreTextSize = CTFramesetterSuggestFrameSizeWithConstraints(framesetterRef, CFRangeMake(0,0), nil, restrictSize, nil);return coreTextSize.height;
}

#import "BookDataTool.h"
#import "CoreTextDataModel.h"@implementation BookDataTool/**CoreText 分页str: NSAttributedString属性字符串textFrame: 绘制区域*/+ (NSArray *)wkj_coreTextPaging:(NSAttributedString *)strtextArea:(CGRect)textFrame{
//    textFrame.size.height = textFrame.size.height;///分页NSAttributedString结果//    NSMutableArray *arrayPagingStr = [NSMutableArray array];///分页NSRange结果NSMutableArray *arrayCoretext = [NSMutableArray array];CFAttributedStringRef cfStrRef = (__bridge CFAttributedStringRef)str;CTFramesetterRef framesetterRef = CTFramesetterCreateWithAttributedString(cfStrRef);CGPathRef path = CGPathCreateWithRect(textFrame, NULL);int textPos = 0;NSUInteger strLength = [str length];while (textPos < strLength)  {//设置路径CTFrameRef frame = CTFramesetterCreateFrame(framesetterRef, CFRangeMake(textPos, 0), path, NULL);CFRange frameRange = CTFrameGetVisibleStringRange(frame);NSRange range = NSMakeRange(frameRange.location, frameRange.length);//        [arrayPagingRange addObject:[NSValue valueWithRange:range]];//        [arrayPagingStr addObject:[str attributedSubstringFromRange:range]];
        CoreTextDataModel *model = [[CoreTextDataModel alloc]init];model.ctFrame = frame;model.range = range;model.content = [str attributedSubstringFromRange:range];[arrayCoretext addObject:model];//移动textPos += frameRange.length;CFRelease(frame);}CGPathRelease(path);CFRelease(framesetterRef);//    return arrayPagingStr;return arrayCoretext;
}///获取属性字符串
+ (NSAttributedString *)wkj_loadTemplateFile:(NSString *)path{NSMutableAttributedString *resultAtt = [[NSMutableAttributedString alloc] init];NSData *data = [NSData dataWithContentsOfFile:path];if (data) {NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];if ([array isKindOfClass:[NSArray class]]) {for (NSDictionary *dic in array) {if ([dic[@"type"] isEqualToString:@"txt"]) {NSAttributedString *att = [self parseAttributedContentFromDictionary:dic];[resultAtt appendAttributedString:att];}}}}return resultAtt;
}
///获取属性字符串
+ (NSAttributedString *)parseAttributedContentFromDictionary:(NSDictionary *)dict{NSMutableDictionary *attributes = [self attributes];if ([dict[@"type1"] isEqualToString:@"0"]) {CTFontRef fontRef = CTFontCreateWithName((CFStringRef)@"ArialMT", 35, NULL);attributes[(id)kCTFontAttributeName] = (__bridge id)fontRef;CFRelease(fontRef);}NSString *content = dict[@"content"];return [[NSAttributedString alloc] initWithString:content attributes:attributes];
}
///获取属性字符串字典
+ (NSMutableDictionary *)attributes{CGFloat fontSize = [BookThemeManager sharedManager].fontSize;CTFontRef fontRef = CTFontCreateWithName((CFStringRef)@"ArialMT", fontSize, NULL);CGFloat lineSpacing = [BookThemeManager sharedManager].lineSpace;const CFIndex kNumberOfSettings = 3;CTParagraphStyleSetting theSettings[kNumberOfSettings] = {{ kCTParagraphStyleSpecifierLineSpacingAdjustment, sizeof(CGFloat), &lineSpacing },{ kCTParagraphStyleSpecifierMaximumLineSpacing, sizeof(CGFloat), &lineSpacing },{ kCTParagraphStyleSpecifierMinimumLineSpacing, sizeof(CGFloat), &lineSpacing }};CTParagraphStyleRef theParagraphRef = CTParagraphStyleCreate(theSettings, kNumberOfSettings);UIColor * textColor = [BookThemeManager sharedManager].textColor;NSMutableDictionary * dict = [NSMutableDictionary dictionary];dict[(id)kCTForegroundColorAttributeName] = (id)textColor.CGColor;dict[(id)kCTFontAttributeName] = (__bridge id)fontRef;dict[(id)kCTParagraphStyleAttributeName] = (__bridge id)theParagraphRef;CFRelease(theParagraphRef);CFRelease(fontRef);return dict;
}@end