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//
// OCBarrageTextDescriptor.m
// TestApp
//
// Created by QMTV on 2017/8/23.
// Copyright © 2017年 LFC. All rights reserved.
//
#import "OCBarrageTextDescriptor.h"
@implementation OCBarrageTextDescriptor
@synthesize textFont = _textFont, textColor = _textColor, shadowColor = _shadowColor, attributedText = _attributedText;
- (instancetype)init {
self = [super init];
if (self) {
_textAttribute = [NSMutableDictionary dictionary];
_shadowColor = [UIColor blackColor];
_shadowOffset = CGSizeZero;
_shadowRadius = 2.0;
_shadowOpacity = 0.5;
}
return self;
}
#pragma mark ----- setter
- (void)setTextShadowOpened:(BOOL)textShadowOpened {
_textShadowOpened = textShadowOpened;
if (textShadowOpened) {
[_textAttribute removeObjectForKey:NSStrokeColorAttributeName];
[_textAttribute removeObjectForKey:NSStrokeWidthAttributeName];
}
}
- (void)setTextFont:(UIFont *)textFont {
_textFont = textFont;
[_textAttribute setValue:textFont forKey:NSFontAttributeName];
}
- (void)setTextColor:(UIColor *)textColor {
_textColor = textColor;
[_textAttribute setValue:textColor forKey:NSForegroundColorAttributeName];
}
- (void)setStrokeColor:(UIColor *)strokeColor {
_strokeColor = strokeColor;
if (_textShadowOpened) {
return;
}
[_textAttribute setValue:strokeColor forKey:NSStrokeColorAttributeName];
}
- (void)setStrokeWidth:(int)strokeWidth {
_strokeWidth = strokeWidth;
if (_textShadowOpened) {
return;
}
[_textAttribute setValue:[NSNumber numberWithInt:strokeWidth] forKey:NSStrokeWidthAttributeName];
}
#pragma mark ----- getter
- (NSString *)text {
if (!_text) {
_text = _attributedText.string;
}
return _text;
}
- (UIFont *)textFont {
if (!_textFont) {
_textFont = [UIFont systemFontOfSize:17.0];
}
return _textFont;
}
- (UIColor *)textColor {
if (!_textColor) {
_textColor = [UIColor whiteColor];
}
return _textColor;
}
- (UIColor *)shadowColor {
if (!_shadowColor) {
_shadowColor = [UIColor blackColor];
}
return _shadowColor;
}
- (NSAttributedString *)attributedText {
if (!_attributedText) {
if (!_text) {
return nil;
}
_attributedText = [[NSAttributedString alloc] initWithString:_text attributes:_textAttribute];
}
//修复阿拉伯文字显示的bug.
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setBaseWritingDirection:NSWritingDirectionLeftToRight];
NSMutableAttributedString *tempText = [[NSMutableAttributedString alloc] initWithAttributedString:_attributedText];
[tempText addAttributes:@{NSParagraphStyleAttributeName:paragraphStyle} range:NSMakeRange(0, tempText.string.length)];
return [tempText copy];
}
- (id)mutableCopy {
return [self copy];
}
@end
/**
* API: Character Attributes , NSAttributedString 共有21个属性
*
* 1. NSFontAttributeName ->设置字体属性,默认值:字体:Helvetica(Neue) 字号:12
*
*
* 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)
*
*
* 3. NSForegroundColorAttributeName ->设置字体颜色,取值为 UIColor对象,默认值为黑色
*
*
* 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
*
*
* 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
*
*
* 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
*
*
* 7. NSStrikethroughStyleAttributeName ->设置删除线,取值为 NSNumber 对象(整数)
*
*
* 8. NSStrikethroughColorAttributeName ->设置删除线颜色,取值为 UIColor 对象,默认值为黑色
*
*
* 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
*
*
* 10. NSUnderlineColorAttributeName ->设置下划线颜色,取值为 UIColor 对象,默认值为黑色
*
*
* 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
*
*
* 12. NSStrokeColorAttributeName ->填充部分颜色,不是字体颜色,取值为 UIColor 对象
*
*
* 13. NSShadowAttributeName ->设置阴影属性,取值为 NSShadow 对象
*
*
* 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
*
*
* 15. NSBaselineOffsetAttributeName ->设置基线偏移值,取值为 NSNumber (float),正值上偏,负值下偏
*
*
* 16. NSObliquenessAttributeName ->设置字形倾斜度,取值为 NSNumber (float),正值右倾,负值左倾
*
*
* 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
*
*
* 18. NSWritingDirectionAttributeName ->设置文字书写方向,从左向右书写或者从右向左书写
*
*
* 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
*
*
* 20. NSLinkAttributeName ->设置链接属性,点击后调用浏览器打开指定URL地址
*
*
* 21. NSAttachmentAttributeName ->设置文本附件,取值为NSTextAttachment对象,常用于文字图片混排
*
*/