xtfei2011
192 lines
5.7 KiB
Objective-C
Executable File
192 lines
5.7 KiB
Objective-C
Executable File
//
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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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*
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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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