字体属性

字体属性设置示例：

if(color ==nil) {

color = [NSColor redColor];

}

NSFont *font = button.font;

NSMutableParagraphStyle *centredStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];

[centredStyle setAlignment:NSCenterTextAlignment];

NSDictionary * attrs = [NSDictionary dictionaryWithObjectsAndKeys:font,

NSFontAttributeName,

color,

NSForegroundColorAttributeName,

centredStyle,

NSParagraphStyleAttributeName,

nil];

NSAttributedString * attributedString = [[NSAttributedString alloc]initWithString:[button title] attributes:attrs];

[button setAttributedTitle:attributedString];

以下为参数的设定

// NSFontAttributeName                设置字体属性，默认值：字体：Helvetica(Neue) 字号：12  

//NSForegroundColorAttributeName 设置字体颜色，取值为 UIColor，默认为黑色  

NSDictionary *attrDict1 = @{ NSForegroundColorAttributeName: [UIColor redColor] };  

 NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor blueColor] };  

 NSDictionary *attrDict3 = @{ NSForegroundColorAttributeName: [UIColor orangeColor] };      

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1]; 

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

// NSForegroundColorAttributeNam      设置字体颜色，取值为 UIColor对象，默认值为黑色

//NSForegroundColorAttributeName 设置字体颜色，取值为 UIColor，默认为黑色

NSDictionary *attrDict1 = @{ NSForegroundColorAttributeName: [UIColor redColor] };  

 NSDictionary *attrDict2 = @{ NSForegroundColorAttributeName: [UIColor blueColor] };  

 NSDictionary *attrDict3 = @{ NSForegroundColorAttributeName: [UIColor orangeColor] };      

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2]; 

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];        

---

 // 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  

NSDictionary *attrDict4 = @{ NSBackgroundColorAttributeName: [UIColor orangeColor] }; 

NSDictionary *attrDict5 = @{ NSBackgroundColorAttributeName: [UIColor redColor] }; 

NSDictionary *attrDict6 = @{ NSBackgroundColorAttributeName: [UIColor cyanColor] };     

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict4]; 

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict5]; 

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict6];

NSForegroundColorAttributeName 和 NSBackgroundColorAttributeName 的低位是相等的，跟前面介绍的 textColor 一样，哪个属性最后一次赋值，就会冲掉前面的效果

---

// 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  

//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，  //  2 表示使用所有连体符号，默认值为 1（iOS 不支持 2）      

NSString *ligatureStr = @"flush";      

NSDictionary *attrDict1 = @{ NSLigatureAttributeName: [NSNumber numberWithInt: 0],                                

NSFontAttributeName: [UIFont fontWithName: @"futura" size: 30] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: ligatureStr attributes: attrDict1];      

NSDictionary *attrDict2 = @{ NSLigatureAttributeName: @(1),                                NSFontAttributeName: [UIFont fontWithName: @"futura" size: 30]                                };  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: ligatureStr attributes: attrDict2];

由于要展示连体字符，所以将前面使用的带有中文的字符串换成 flush

NSLigatureAttributeName的取值为NSNumber对象，所以不能直接将一个整数值赋给它，创建 NSNumber 对象的方法有很多，或者可以简写成 @(int)

---

// NSKernAttributeName                设定字符间距，取值为 NSNumber 对象（整数），正值间距加宽，负值间距变窄  

NSDictionary *attrDict1 = @{ NSKernAttributeName: @(-3),                                NSFontAttributeName: [UIFont systemFontOfSize: 20]};  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSKernAttributeName: @(0),                                NSFontAttributeName: [UIFont systemFontOfSize: 20]};  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSKernAttributeName: @(10),                                NSFontAttributeName: [UIFont systemFontOfSize: 20]};  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

// NSStrikethroughStyleAttributeName  设置删除线，取值为 NSNumber 对象（整数）  

//NSStrikethroughStyleAttributeName 设置删除线，取值为 NSNumber 对象（整数），枚举常量 NSUnderlineStyle中的值  

 // NSUnderlineStyleNone  不设置删除线  

// NSUnderlineStyleSingle 设置删除线为细单实线  

// NSUnderlineStyleThick  设置删除线为粗单实线  

// NSUnderlineStyleDouble 设置删除线为细双实线        

 NSDictionary *attrDict1 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleSingle),                                

NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleThick),                                

NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSStrikethroughStyleAttributeName: @(NSUnderlineStyleDouble),                                

NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

取值为 0 - 7时，效果为单实线，随着值得增加，单实线逐渐变粗，取值为 9 - 15时，效果为双实线，取值越大，双实线越粗

虽然使用了枚举常量，但是枚举常量的本质仍为整数，所以同样必须先转化为 NSNumber 才能使用

删除线和下划线使用相同的枚举常量作为其属性值

目前iOS中只有上面列出的4中效果，虽然我们能够在头文件中发现其他更多的取值，但是使用后没有任何效果

---

// NSStrikethroughColorAttributeName  设置删除线颜色，取值为 UIColor 对象，默认值为黑色     

NSDictionary *attrDict1 = @{ NSStrikethroughColorAttributeName: [UIColor blueColor],                                

NSStrikethroughStyleAttributeName: @(1),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSStrikethroughColorAttributeName: [UIColor orangeColor],                                

NSStrikethroughStyleAttributeName: @(3),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSStrikethroughColorAttributeName: [UIColor greenColor],                                

NSStrikethroughStyleAttributeName: @(7),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // 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  

 NSDictionary *attrDict1 = @{ NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),                                

NSFontAttributeName: [UIFont systemFontOfSize:20] }; 

 _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick), NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSUnderlineStyleAttributeName: @(NSUnderlineStyleDouble),NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // NSUnderlineColorAttributeName      设置下划线颜色，取值为 UIColor 对象，默认值为黑色  

NSDictionary *attrDict1 = @{ NSUnderlineColorAttributeName: [UIColor blueColor],NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSUnderlineColorAttributeName: [UIColor orangeColor],NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick),NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSUnderlineColorAttributeName: [UIColor greenColor],NSUnderlineStyleAttributeName: @(NSUnderlineStyleDouble),NSFontAttributeName: [UIFont systemFontOfSize:20] };  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

// NSStrokeWidthAttributeName        设置笔画宽度，取值为 NSNumber 对象（整数），负值填充效果，正值中空效果  

NSDictionary *attrDict1 = @{ NSStrokeWidthAttributeName: @(-3),                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSStrokeWidthAttributeName: @(0),                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSStrokeWidthAttributeName: @(3),                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // NSStrokeColorAttributeName        填充部分颜色，不是字体颜色，取值为 UIColor 对象  

NSDictionary *attrDict1 = @{ NSStrokeWidthAttributeName: @(-3),                                NSStrokeColorAttributeName: [UIColor orangeColor],                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

 _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSStrokeWidthAttributeName: @(0),                                NSStrokeColorAttributeName: [UIColor blueColor],                                NSFontAttributeName: [UIFont systemFontOfSize:30] }; 

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];        

 NSDictionary *attrDict3 = @{ NSStrokeWidthAttributeName: @(3),                                NSStrokeColorAttributeName: [UIColor greenColor],                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // NSShadowAttributeName              设置阴影属性，取值为 NSShadow 对象

NSShadow *shadow1 = [[NSShadow alloc] init];  

//NSShadow 对象比较简单，只有3个属性：阴影颜色，模糊半径和偏移  shadow1.shadowOffset = CGSizeMake(3, 3);//阴影偏移（X方向偏移和Y方向偏移）  

 shadow1.shadowBlurRadius = 0.5;//模糊半径  

 shadow1.shadowColor = [UIColor orangeColor];  //阴影颜色      

NSShadow *shadow2 = [[NSShadow alloc] init];  

 shadow2.shadowOffset = CGSizeMake(3, 16);  shadow2.shadowBlurRadius = 2.5;  

 shadow2.shadowColor = [UIColor purpleColor];      

NSShadow *shadow3 = [[NSShadow alloc] init];  

 shadow3.shadowOffset = CGSizeMake(16, 3);  

 shadow3.shadowBlurRadius = 4.0;  

 shadow3.shadowColor = [UIColor blueColor];      

NSDictionary *attrDict1 = @{ NSShadowAttributeName: shadow1,                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSShadowAttributeName: shadow2,                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSShadowAttributeName: shadow3,                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // 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：

//NSTextEffectLetterpressStyle（凸版印刷效果），适用于iOS 7.0及以上        

NSDictionary *attrDict1 = @{ NSTextEffectAttributeName: NSTextEffectLetterpressStyle,                                NSForegroundColorAttributeName: [UIColor grayColor],                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

 _label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ //NSTextEffectAttributeName: NSTextEffectLetterpressStyle,                                NSForegroundColorAttributeName: [UIColor grayColor],                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

 _label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSTextEffectAttributeName: NSTextEffectLetterpressStyle,                                NSForegroundColorAttributeName: [UIColor blueColor],                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

 _label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

// NSBaselineOffsetAttributeName      设置基线偏移值，取值为 NSNumber （float）,正值上偏，负值下偏  

NSDictionary *attrDict1 = @{ NSBaselineOffsetAttributeName: @(-10),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSBaselineOffsetAttributeName: @(0),                              NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSBaselineOffsetAttributeName: @(10),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // NSObliquenessAttributeName        设置字形倾斜度，取值为 NSNumber （float）,正值右倾，负值左倾  

NSDictionary *attrDict1 = @{ NSObliquenessAttributeName: @(-0.5),                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSObliquenessAttributeName: @(0),                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSObliquenessAttributeName: @(0.8),                                NSFontAttributeName: [UIFont systemFontOfSize:30] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // 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  

NSDictionary *attrDict1 = @{ NSExpansionAttributeName: @(-1),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSExpansionAttributeName: @(0),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSExpansionAttributeName: @(0.6),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // NSWritingDirectionAttributeName    设置文字书写方向，从左向右书写或者从右向左书写  

//NSWritingDirectionAttributeName 设置文字书写方向，取值为以下组合      //@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionEmbedding)]  //@[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionOverride)]  //@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionEmbedding)]  //@[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionOverride)]      

NSDictionary *attrDict1 = @{ NSWritingDirectionAttributeName: @[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionEmbedding)],                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];      

NSDictionary *attrDict2 = @{ NSWritingDirectionAttributeName: @[@(NSWritingDirectionRightToLeft | NSTextWritingDirectionOverride)],                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSWritingDirectionAttributeName: @[@(NSWritingDirectionLeftToRight | NSTextWritingDirectionOverride)],                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // 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  

//在 iOS 中，总是使用横排文本，0 以外的值都未定义      

NSDictionary *attrDict1 = @{ NSVerticalGlyphFormAttributeName: @(-10),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];        

 NSDictionary *attrDict2 = @{ NSVerticalGlyphFormAttributeName: @(0),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label02.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict2];      

NSDictionary *attrDict3 = @{ NSVerticalGlyphFormAttributeName: @(10),                                NSFontAttributeName: [UIFont systemFontOfSize:20] };  

_label03.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict3];

---

 // NSLinkAttributeName                设置链接属性，点击后调用浏览器打开指定URL地址  

链接属性点击将启动浏览器打开一个URL地址，中间用到一个代理函数，UILabel 和 UITextField 无法使用该属性，所以只能用UITextView来做示例。

NSDictionary *attrDict1 = @{ NSLinkAttributeName: [NSURL URLWithString: @"http://www.baidu.com"],                                NSFontAttributeName: [UIFont systemFontOfSize:20] };     

_textview01.editable = NO;        //必须禁止输入，否则点击将弹出输入键盘 

_textview01.scrollEnabled = NO;  //可选 

_textview01.delegate = self;      //必须设置，否则代理函数不会被回调     

_textview01.attributedText = [[NSAttributedString alloc] initWithString: originStr attributes: attrDict1];

代理函数

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)URL inRange:(NSRange)characterRange{      

NSLog(@"textView is clicked...");      

return YES;  }

---

// NSAttachmentAttributeName          设置文本附件,取值为NSTextAttachment对象,常用于文字图片混排  

NSTextAttachment *textAttachment01 = [[NSTextAttachment alloc] init];  

textAttachment01.image = [UIImage imageNamed: @"10000.jpeg"];  //设置图片源  

textAttachment01.bounds = CGRectMake(0, 0, 30, 30);          //设置图片位置和大小  

 NSMutableAttributedString *attrStr01 = [[NSMutableAttributedString alloc] initWithString: originStr];      

[attrStr01 addAttribute: NSFontAttributeName value: [UIFont systemFontOfSize: 25] range: NSMakeRange(0, originStr.length)];  NSAttributedString *attrStr11 = [NSAttributedString attributedStringWithAttachment: textAttachment01];      

[attrStr01 insertAttributedString: attrStr11 atIndex: 2];  //NSTextAttachment占用一个字符长度，插入后原字符串长度增加1      

_label01.attributedText = attrStr01;        

 NSTextAttachment *textAttachment02 = [[NSTextAttachment alloc] init];  

textAttachment02.image = [UIImage imageNamed: @"10000.jpeg"];  //设置图片源  

textAttachment02.bounds = CGRectMake(0, -10, 30, 40);          //设置图片位置和大小  

 NSMutableAttributedString *attrStr02 = [[NSMutableAttributedString alloc] initWithString: originStr];      

[attrStr02 addAttribute: NSFontAttributeName value: [UIFont systemFontOfSize: 25] range: NSMakeRange(0, originStr.length)];  

 NSAttributedString *attrStr12 = [NSAttributedString attributedStringWithAttachment: textAttachment02];      

[attrStr02 insertAttributedString: attrStr12 atIndex: 6];      

_label02.attributedText = attrStr02;      

NSTextAttachment *textAttachment03 = [[NSTextAttachment alloc] init];  

textAttachment03.image = [UIImage imageNamed: @"10000.jpeg"];  //设置图片源  

textAttachment03.bounds = CGRectMake(0, -6, 50, 30);          //设置图片位置和大小  

 NSMutableAttributedString *attrStr03 = [[NSMutableAttributedString alloc] initWithString: originStr];     

[attrStr03 addAttribute: NSFontAttributeName value: [UIFont systemFontOfSize: 25] range: NSMakeRange(0, originStr.length)];  

 NSAttributedString *attrStr13 = [NSAttributedString attributedStringWithAttachment: textAttachment03];      

[attrStr03 insertAttributedString: attrStr13 atIndex: 8];      

_label03.attributedText = attrStr03;

---

// NSParagraphStyleAttributeName      设置文本段落排版格式，取值为 NSParagraphStyle 对象

设置文本段落排版格式，取值为 NSParagraphStyle/NSMutableParagraphStyle 对象，可以设置如下属性：

// alignment              对齐方式，取值枚举常量 NSTextAlignment  

enum {        

NSTextAlignmentLeft      = 0, 

NSTextAlignmentCenter    = 1,

NSTextAlignmentRight    = 2, 

NSTextAlignmentJustified = 3,

NSTextAlignmentNatural  = 4,}; 

 // firstLineHeadIndent    首行缩进，取值 float  

// headIndent              缩进，取值 float  

// tailIndent              尾部缩进，取值 float  注意距离是从行首算起

// lineHeightMultiple      可变行高,乘因数，取值 float  // maximumLineHeight      最大行高，取值 float 

行高倍数因子，大于1行高变小，小于1行高变小，实际上字体大小不会改变，改变的时行间距

 // minimumLineHeight      最小行高，取值 float  

//  manimumLineHeight    最大行高，取值 float

最大行高，若其值小于默认行高，则行间距变小，若其值大于默认行高，则不会引起任何变化

最小行高，若其值大于默认行高，则行间距变大，若其值小于默认行高，则不会引起任何变化

 // lineSpacing            行距，取值 float 

行距，取值为 float，可正可负，正值增加行距，负值减小行距

// paragraphSpacing        段距，取值 float  负值无效，取0值

 // paragraphSpacingBefore  段首空间，取值 float  

 //baseWritingDirection    句子方向，取值枚举常量 NSWritingDirection 

enum {        

NSWritingDirectionNatural = -1,        

NSWritingDirectionLeftToRight =  0, 

NSWritingDirectionRightToLeft =  1 };

 // lineBreakMode          断行方式，取值枚举常量 NSLineBreakMode  

enum {

NSLineBreakByWordWrapping = 0, //自动换行，单词切断 

NSLineBreakByCharWrapping,    //自动换行，字母切断 

NSLineBreakByClipping,        //非自动换行，不切断 

NSLineBreakByTruncatingHead,  //非自动换行，行首切断 

NSLineBreakByTruncatingTail,  //非自动换行，行尾切断 

NSLineBreakByTruncatingMiddle  //非自动换行，中间切断  };

 // hyphenationFactor      连字符属性，取值 0 - 1