394 lines
14 KiB
Objective-C
394 lines
14 KiB
Objective-C
//
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// UMComMutiStyleTextView.m
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// UMCommunity
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//
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// Created by umeng on 15-3-5.
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// Copyright (c) 2015年 Umeng. All rights reserved.
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//
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#import "UMComMutiStyleTextView.h"
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#import "UMComResouceDefines.h"
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#import <UMComFoundation/UMComKit+Color.h>
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@interface UMComMutiStyleTextView ()
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@end
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@implementation UMComMutiStyleTextView
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- (id)init
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{
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self = [self initWithFrame:CGRectZero];
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return self;
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}
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- (void)dealloc
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{
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if (_framesetterRef) {
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CFRelease((__bridge_retained CTFramesetterRef)(_framesetterRef));
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_framesetterRef = NULL;
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}
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}
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- (id)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self) {
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[self createDefault];
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}
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return self;
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}
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- (void)setMutiStyleTextViewWithMutiText:(UMComMutiText *)mutiText
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{
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self.attributedText = mutiText.attributedText;
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self.framesetterRef = mutiText.framesetterRef;
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self.runs = mutiText.runs;
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self.font = mutiText.font;
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self.lineSpace = mutiText.lineSpace;
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self.textColor = mutiText.textColor;
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[self setText:mutiText.text];
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}
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#pragma mark - CreateDefault
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- (void)createDefault
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{
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//public
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_text = nil;
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_font = [UIFont systemFontOfSize:13.0f];
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_textColor = [UIColor blackColor];
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_lineSpace = 2.0f;
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// self.heightOffset = 0.0f;
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_attributedText = nil;
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_pointOffset = CGPointZero;
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//private
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_runs = [NSMutableArray array];
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_runRectDictionary = [NSMutableDictionary dictionary];
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_touchRun = nil;
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_checkWords = [NSMutableArray arrayWithCapacity:1];
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_framesetterRef = NULL;
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UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapInCerrentView:)];
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[self addGestureRecognizer:tap];
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}
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#pragma mark - Set
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- (void)setText:(NSString *)text
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{
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[self setNeedsDisplay];
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_text = text;
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}
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- (void)awakeFromNib
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{
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[self createDefault];
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}
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#pragma mark - Draw Rect
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- (void)drawRect:(CGRect)rect
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{
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//绘图上下文
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CGContextRef contextRef = UIGraphicsGetCurrentContext();
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if (self.attributedText == nil || self.attributedText.length == 0 ){
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return;
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}
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CGRect viewRect = CGRectMake(self.pointOffset.x, -self.pointOffset.y, rect.size.width, rect.size.height);//
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//修正坐标系
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CGAffineTransform affineTransform = CGAffineTransformIdentity;
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affineTransform = CGAffineTransformMakeTranslation(0.0, viewRect.size.height);
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affineTransform = CGAffineTransformScale(affineTransform, 1.0, -1.0);
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CGContextConcatCTM(contextRef, affineTransform);
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//创建一个用来描画文字的路径，其区域为viewRect CGPath
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CGMutablePathRef pathRef = CGPathCreateMutable();
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CGPathAddRect(pathRef, NULL, viewRect);
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CTFramesetterRef frameSetter = CFRetain((__bridge CTFramesetterRef)(self.framesetterRef));
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CTFrameRef frameRef = CTFramesetterCreateFrame(frameSetter, CFRangeMake(0, 0), pathRef, nil);
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//通过context在frame中描画文字内容
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CTFrameDraw(frameRef, contextRef);
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[self.runRectDictionary removeAllObjects];
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[self setRunsKeysToRunRectWithFrameRef:frameRef];
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CGPathRelease(pathRef);
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CFRelease(frameRef);
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CFRelease(frameSetter);
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}
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- (void)setRunsKeysToRunRectWithFrameRef:(CTFrameRef)frameRef
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{
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CFArrayRef lines = CTFrameGetLines(frameRef);
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CGPoint lineOrigins[CFArrayGetCount(lines)];
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CTFrameGetLineOrigins(frameRef, CFRangeMake(0, 0), lineOrigins);
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for (int i = 0; i < CFArrayGetCount(lines); i++)
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{
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CTLineRef lineRef= CFArrayGetValueAtIndex(lines, i);
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CGFloat lineAscent;
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CGFloat lineDescent;
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CGFloat lineLeading;
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CGPoint lineOrigin = CGPointMake(lineOrigins[i].x, lineOrigins[i].y);//
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CTLineGetTypographicBounds(lineRef, &lineAscent, &lineDescent, &lineLeading);
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CFArrayRef runs = CTLineGetGlyphRuns(lineRef);
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for (int j = 0; j < CFArrayGetCount(runs); j++)
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{
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CTRunRef runRef = CFArrayGetValueAtIndex(runs, j);
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CGFloat runAscent;
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CGFloat runDescent;
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CGRect runRect;
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runRect.size.width = CTRunGetTypographicBounds(runRef, CFRangeMake(0,0), &runAscent, &runDescent, NULL);
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runRect = CGRectMake(lineOrigin.x + CTLineGetOffsetForStringIndex(lineRef, CTRunGetStringRange(runRef).location, NULL),
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lineOrigin.y,
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runRect.size.width,
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runAscent + runDescent);
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NSDictionary * attributes = (__bridge NSDictionary *)CTRunGetAttributes(runRef);
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UMComMutiTextRun *mutiTextRun = [attributes objectForKey:UMComMutiTextRunAttributedName];
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if (mutiTextRun.drawSelf)
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{
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CGFloat runAscent,runDescent;
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CGFloat runWidth = CTRunGetTypographicBounds(runRef, CFRangeMake(0,0), &runAscent, &runDescent, NULL);
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CGFloat runHeight = (lineAscent + lineDescent );
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CGFloat runPointX = runRect.origin.x + lineOrigin.x;
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CGFloat runPointY = lineOrigin.y;
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CGRect runRectDraw = CGRectMake(runPointX, runPointY, runWidth, runHeight);
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[mutiTextRun drawRunWithRect:runRectDraw];
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[self.runRectDictionary setObject:mutiTextRun forKey:[NSValue valueWithCGRect:runRectDraw]];
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}
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else
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{
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if (mutiTextRun)
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{
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[self.runRectDictionary setObject:mutiTextRun forKey:[NSValue valueWithCGRect:runRect]];
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}
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}
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}
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}
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}
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- (void)tapInCerrentView:(UITapGestureRecognizer *)tap
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{
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CGPoint location = [tap locationInView:self];
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CGPoint runLocation = CGPointMake(location.x-self.pointOffset.x, self.frame.size.height - location.y+self.pointOffset.y+2);
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__weak UMComMutiStyleTextView *weakSelf = self;
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if (self.clickOnlinkText) {
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if (self.runRectDictionary.count > 0) {
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BOOL isInclude = NO;
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for (NSValue *key in [self.runRectDictionary allKeys]) {
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id object = [self.runRectDictionary objectForKey:key];
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CGRect rect = [((NSValue *)key) CGRectValue];
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if(CGRectContainsPoint(rect, runLocation))
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{
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isInclude = YES;
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weakSelf.touchRun = (UMComMutiTextRun *)object;
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if ([object isKindOfClass:[UMComMutiTextRunURL class]]) {
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if (![[weakSelf.touchRun.text lowercaseString] hasPrefix:@"http"]) {
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weakSelf.touchRun.text = [NSString stringWithFormat:@"http://%@",weakSelf.touchRun.text];
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}
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}
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break;
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}
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}
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if (isInclude == YES) {
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weakSelf.clickOnlinkText(self,weakSelf.touchRun);
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}else{
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weakSelf.clickOnlinkText(self,nil);
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}
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}else{
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weakSelf.clickOnlinkText(self,nil);
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}
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}
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}
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//#pragma mark -
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//
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//+ (NSMutableAttributedString *)createAttributedStringWithText:(NSString *)text font:(UIFont *)font lineSpace:(CGFloat)lineSpace
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//{
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// NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] initWithString:text];
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// //设置字体
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// CTFontRef fontRef = CTFontCreateFromUIFont(font);
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// [attString addAttribute:(NSString*)kCTFontAttributeName value:(__bridge id)fontRef range:NSMakeRange(0,attString.length)];
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// CFRelease(fontRef);
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//
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// //添加换行模式
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// CTParagraphStyleSetting lineBreakMode;
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// CTLineBreakMode lineBreak = kCTLineBreakByWordWrapping;
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// lineBreakMode.spec = kCTParagraphStyleSpecifierLineBreakMode;
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// lineBreakMode.value = &lineBreak;
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// lineBreakMode.valueSize = sizeof(lineBreak);
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//
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// //行距
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// CTParagraphStyleSetting lineSpaceStyle;
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// lineSpaceStyle.spec = kCTParagraphStyleSpecifierLineSpacing;
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// lineSpaceStyle.valueSize = sizeof(lineSpace);
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// lineSpaceStyle.value =&lineSpace;
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//
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// CTParagraphStyleSetting settings[] = {lineSpaceStyle,lineBreakMode};
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// CTParagraphStyleRef style = CTParagraphStyleCreate(settings, sizeof(settings)/sizeof(settings[0]));
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// NSMutableDictionary *attributes = [NSMutableDictionary dictionaryWithObject:(__bridge id)style forKey:(id)kCTParagraphStyleAttributeName ];
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// CFRelease(style);
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//
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// [attString addAttributes:attributes range:NSMakeRange(0, [attString length])];
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////
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////
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//// [attString addAttribute:(NSString*)kCTForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0,attString.length)];
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// return attString;
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//}
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//+ (NSArray *)createTextRunsWithAttString:(NSMutableAttributedString *)attString
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// runType:(UMComMutiTextRunTypeList)type
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// font:(UIFont *)font
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// checkWords:(NSArray *)checkWords
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//{
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// NSMutableArray *array = [[NSMutableArray alloc] init];
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// UIColor *blueColor = UMComColorWithHexString(FontColorBlue];
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// if (type == UMComMutiTextRunFeedContentType || type == UMComMutiTextRunCommentType || type == UMComMutiTextRunLikeType || type == UMComMutiTextRunNoneType)
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// {
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// NSArray *subRunArray = [UMComMutiTextRunURL runsWithAttributedString:attString font:font textColor:blueColor];
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// if (subRunArray.count > 0) {
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// [array addObjectsFromArray:subRunArray];
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// }
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// subRunArray = [UMComMutiTextRunTopic runsWithAttributedString:attString font:font textColor:blueColor checkWords:checkWords];
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// if (subRunArray.count > 0) {
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// [array addObjectsFromArray:subRunArray];
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// }
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// subRunArray = [UMComMutiTextRunClickUser runsWithAttributedString:attString font:font textColor:blueColor checkWords:checkWords];
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// if (subRunArray.count > 0) {
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// [array addObjectsFromArray:subRunArray];
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// }
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// }
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// return array;
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//}
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//- (NSArray *)runsWithattributString:(NSMutableAttributedString *)attribuString
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// Font:(UIFont *)font
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// lineSpace:(CGFloat )lineSpace
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// color:(UIColor *)color
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// checkWords:(NSArray *)checkWords
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//{
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// return nil;
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//}
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//+ (UMComMutiStyleTextView *)rectDictionaryWithSize:(CGSize)size
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// font:(UIFont *)font
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// attString:(NSString *)string
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// lineSpace:(CGFloat )lineSpace
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// runType:(UMComMutiTextRunTypeList)runType
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// checkWords:(NSMutableArray *)checkWords
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//{
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// UMComMutiStyleTextView * styleTextView = [[UMComMutiStyleTextView alloc] init];
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// styleTextView.checkWords = checkWords;
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// styleTextView.font = font;
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// styleTextView.lineSpace = lineSpace;
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// [styleTextView rectDictionaryWithSize:size font:font attString:string lineSpace:lineSpace];
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// return styleTextView;
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//}
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//- (void)rectDictionaryWithSize:(CGSize)size font:(UIFont *)font attString:(NSString *)string lineSpace:(CGFloat )lineSpace
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//{
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// if (!string || string.length == 0) {
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// return;
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// }
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// CGFloat shortestLineWith = 0;
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// int lineCount = 0;
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// NSMutableAttributedString *attString = [[self class] createAttributedStringWithText:string font:font lineSpace:lineSpace];
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// NSDictionary *dic = [attString attributesAtIndex:0 effectiveRange:nil];
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// CTParagraphStyleRef paragraphStyle = (__bridge CTParagraphStyleRef)[dic objectForKey:(id)kCTParagraphStyleAttributeName];
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// CGFloat linespace = 0;
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//
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// CTParagraphStyleGetValueForSpecifier(paragraphStyle, kCTParagraphStyleSpecifierLineSpacing, sizeof(linespace), &linespace);
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//
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// CGFloat height = 0;
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// CGFloat width = 0;
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// CFIndex lineIndex = 0;
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//
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// CGMutablePathRef pathRef = CGPathCreateMutable();
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// CGPathAddRect(pathRef, NULL, CGRectMake(0, 0, size.width, size.height));
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//
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// NSArray *runs = [[self class] createTextRunsWithAttString:attString runType:0 font:font checkWords:self.checkWords];
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// self.runs = runs;
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//
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// CFAttributedStringRef attStringRef = (__bridge CFAttributedStringRef)attString;
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// CTFramesetterRef setterRef = CTFramesetterCreateWithAttributedString(attStringRef);
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// self.framesetterRef = (__bridge_transfer id)(CFRetain(setterRef));
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// CTFrameRef frameRef = CTFramesetterCreateFrame(setterRef, CFRangeMake(0, 0), pathRef, nil);
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// CFArrayRef lines = CTFrameGetLines(frameRef);
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//
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// lineIndex = CFArrayGetCount(lines);
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// lineCount = (int)lineIndex;
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//
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// CTLineRef lineRef;
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// if (lineIndex > 1)
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// {
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// for (int i = 0; i <lineIndex ; i++)
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// {
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// lineRef= CFArrayGetValueAtIndex(lines, i);
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// if (i == lineIndex - 1) {
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// CGRect rect = CTLineGetBoundsWithOptions(lineRef,kCTLineBoundsExcludeTypographicShifts);
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// shortestLineWith = rect.size.width;
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// }
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// CGFloat lineAscent;
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// CGFloat lineDescent;
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// CGFloat lineLeading;
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// CTLineGetTypographicBounds(lineRef, &lineAscent, &lineDescent, &lineLeading);
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//
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// if (i == lineIndex - 1)
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// {
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// height += (lineAscent + lineDescent +linespace);
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// }
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// else
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// {
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// height += (lineAscent + lineDescent + linespace);
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// }
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// }
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// width = size.width;
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// }
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// else
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// {
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// lineRef= CFArrayGetValueAtIndex(lines, 0);
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// CGRect rect = CTLineGetBoundsWithOptions(lineRef,kCTLineBoundsExcludeTypographicShifts);
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// shortestLineWith = rect.size.width;
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//// self.lineHeight = rect.size.height + linespace;
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// width = rect.size.width;
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// CGFloat lineAscent;
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// CGFloat lineDescent;
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// CGFloat lineLeading;
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// CTLineGetTypographicBounds(lineRef, &lineAscent, &lineDescent, &lineLeading);
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//
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// height += (lineAscent + lineDescent + lineLeading + linespace);
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// height = height;
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// }
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//
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//// self.totalHeight = height + lineSpace/2;
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// self.attributedText = attString;
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// CGPathRelease(pathRef);
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// CFRelease(setterRef);
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// CFRelease(frameRef);
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//}
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@end
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