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191 lines
5.7 KiB
191 lines
5.7 KiB
// |
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// OCBarrageTextDescriptor.m |
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// TestApp |
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// |
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// Created by QMTV on 2017/8/23. |
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// Copyright © 2017年 LFC. All rights reserved. |
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// |
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#import "OCBarrageTextDescriptor.h" |
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@implementation OCBarrageTextDescriptor |
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@synthesize textFont = _textFont, textColor = _textColor, shadowColor = _shadowColor, attributedText = _attributedText; |
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- (instancetype)init { |
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self = [super init]; |
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if (self) { |
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_textAttribute = [NSMutableDictionary dictionary]; |
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_shadowColor = [UIColor blackColor]; |
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_shadowOffset = CGSizeZero; |
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_shadowRadius = 2.0; |
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_shadowOpacity = 0.5; |
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} |
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return self; |
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} |
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#pragma mark ----- setter |
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- (void)setTextShadowOpened:(BOOL)textShadowOpened { |
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_textShadowOpened = textShadowOpened; |
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if (textShadowOpened) { |
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[_textAttribute removeObjectForKey:NSStrokeColorAttributeName]; |
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[_textAttribute removeObjectForKey:NSStrokeWidthAttributeName]; |
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} |
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} |
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- (void)setTextFont:(UIFont *)textFont { |
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_textFont = textFont; |
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[_textAttribute setValue:textFont forKey:NSFontAttributeName]; |
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} |
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- (void)setTextColor:(UIColor *)textColor { |
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_textColor = textColor; |
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[_textAttribute setValue:textColor forKey:NSForegroundColorAttributeName]; |
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} |
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- (void)setStrokeColor:(UIColor *)strokeColor { |
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_strokeColor = strokeColor; |
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if (_textShadowOpened) { |
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return; |
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} |
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[_textAttribute setValue:strokeColor forKey:NSStrokeColorAttributeName]; |
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} |
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- (void)setStrokeWidth:(int)strokeWidth { |
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_strokeWidth = strokeWidth; |
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if (_textShadowOpened) { |
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return; |
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} |
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[_textAttribute setValue:[NSNumber numberWithInt:strokeWidth] forKey:NSStrokeWidthAttributeName]; |
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} |
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#pragma mark ----- getter |
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- (NSString *)text { |
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if (!_text) { |
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_text = _attributedText.string; |
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} |
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return _text; |
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} |
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- (UIFont *)textFont { |
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if (!_textFont) { |
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_textFont = [UIFont systemFontOfSize:17.0]; |
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} |
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return _textFont; |
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} |
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- (UIColor *)textColor { |
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if (!_textColor) { |
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_textColor = [UIColor whiteColor]; |
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} |
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return _textColor; |
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} |
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- (UIColor *)shadowColor { |
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if (!_shadowColor) { |
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_shadowColor = [UIColor blackColor]; |
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} |
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return _shadowColor; |
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} |
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- (NSAttributedString *)attributedText { |
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if (!_attributedText) { |
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if (!_text) { |
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return nil; |
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} |
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_attributedText = [[NSAttributedString alloc] initWithString:_text attributes:_textAttribute]; |
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} |
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//修复阿拉伯文字显示的bug. |
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NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init]; |
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[paragraphStyle setBaseWritingDirection:NSWritingDirectionLeftToRight]; |
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NSMutableAttributedString *tempText = [[NSMutableAttributedString alloc] initWithAttributedString:_attributedText]; |
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[tempText addAttributes:@{NSParagraphStyleAttributeName:paragraphStyle} range:NSMakeRange(0, tempText.string.length)]; |
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return [tempText copy]; |
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} |
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- (id)mutableCopy { |
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return [self copy]; |
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} |
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@end |
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/** |
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* API: Character Attributes , NSAttributedString 共有21个属性 |
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* |
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* 1. NSFontAttributeName ->设置字体属性,默认值:字体:Helvetica(Neue) 字号:12 |
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* |
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* |
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* 2. NSParagraphStyleAttributeName ->设置文本段落排版格式,取值为 NSParagraphStyle 对象(详情见下面的API说明) |
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* |
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* |
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* 3. NSForegroundColorAttributeName ->设置字体颜色,取值为 UIColor对象,默认值为黑色 |
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* |
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* |
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* 4. NSBackgroundColorAttributeName ->设置字体所在区域背景颜色,取值为 UIColor对象,默认值为nil, 透明色 |
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* |
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* |
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* 5. NSLigatureAttributeName ->设置连体属性,取值为NSNumber 对象(整数),0 表示没有连体字符,1 表示使用默认的连体字符 |
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* |
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* |
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* 6. NSKernAttributeName ->设置字符间距,取值为 NSNumber 对象(整数),正值间距加宽,负值间距变窄 |
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* |
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* |
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* 7. NSStrikethroughStyleAttributeName ->设置删除线,取值为 NSNumber 对象(整数) |
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* |
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* |
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* 8. NSStrikethroughColorAttributeName ->设置删除线颜色,取值为 UIColor 对象,默认值为黑色 |
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* |
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* |
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* 9. NSUnderlineStyleAttributeName ->设置下划线,取值为 NSNumber 对象(整数),枚举常量 NSUnderlineStyle中的值,与删除线类似 |
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* |
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* |
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* 10. NSUnderlineColorAttributeName ->设置下划线颜色,取值为 UIColor 对象,默认值为黑色 |
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* |
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* |
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* 11. NSStrokeWidthAttributeName ->设置笔画宽度(粗细),取值为 NSNumber 对象(整数),负值填充效果,正值中空效果 |
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* |
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* |
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* 12. NSStrokeColorAttributeName ->填充部分颜色,不是字体颜色,取值为 UIColor 对象 |
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* |
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* |
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* 13. NSShadowAttributeName ->设置阴影属性,取值为 NSShadow 对象 |
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* |
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* |
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* 14. NSTextEffectAttributeName ->设置文本特殊效果,取值为 NSString 对象,目前只有图版印刷效果可用 |
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* |
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* |
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* 15. NSBaselineOffsetAttributeName ->设置基线偏移值,取值为 NSNumber (float),正值上偏,负值下偏 |
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* |
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* |
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* 16. NSObliquenessAttributeName ->设置字形倾斜度,取值为 NSNumber (float),正值右倾,负值左倾 |
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* |
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* |
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* 17. NSExpansionAttributeName ->设置文本横向拉伸属性,取值为 NSNumber (float),正值横向拉伸文本,负值横向压缩文本 |
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* |
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* |
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* 18. NSWritingDirectionAttributeName ->设置文字书写方向,从左向右书写或者从右向左书写 |
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* |
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* 19. NSVerticalGlyphFormAttributeName ->设置文字排版方向,取值为 NSNumber 对象(整数),0 表示横排文本,1 表示竖排文本 |
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* |
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* |
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* 20. NSLinkAttributeName ->设置链接属性,点击后调用浏览器打开指定URL地址 |
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* |
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* |
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* 21. NSAttachmentAttributeName ->设置文本附件,取值为NSTextAttachment对象,常用于文字图片混排 |
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* |
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*/
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