NSTextView颜色和字体清除后重置 [英] NSTextView color and font reset after clearing it

问题描述

但是，当我用 setString：@清除视图时， ，不仅文本消失，而且所有默认颜色/字体格式化。

> setString ，文本会变成默认字体并再次变黑。

有人可以解释为什么会是这样，

UPDATED：

感谢您帮助和澄清问题。
我最后只是在我setString后格式化它。

  [self.txtLog setFont：[NSFont fontWithName：@ couriersize：12]]; 
 [self.txtLog setTextColor：[NSColor colorWithSRGBRed：65.0 / 255 green：229.0 / 255 blue：235.0 / 255 alpha：1]]; 
  

解决方案

这是因为清除NSTextView并设置一个非属性）字符串删除格式化，其中包括字体和颜色。

大多数时候，我设置了使用HTML格式化的属性字符串。我觉得很方便。例如，这里有两个宏我用来设置颜色和字体：

  #define color（string，color）strAdd5 （@< font color = \＃，（color），@\>，（string），@< / font>）
 #define fontName fontname）strAdd5（@< span style = \font-family：，（fontname），@; \>，（string），@< / span>）
 #define html2AttributedString（htmlString）[[[NSAttributedString alloc] initWithHTML：[（htmlString）dataUsingEncoding：NSUTF8StringEncoding] documentAttributes：NULL] autorelease] 
  

然后，我需要的是在文本存储中设置属性字符串：

  [textStorage setAttributedString：html2AttributedString（color（myNSString，@FF0000））] 
  

  [textView insertText：html2AttributedString（fontName（myNSString，@Courier New）） 
  

使用HTML，您可以定义一切，包括定中心和许多其他属性。但是，你必须将任何新行转换为< BR />，然后再转换文字。

I set some default font and color to a NSTextView inside of a NSPanel.

However, when I clear the view with setString:@"", not only does the text disappears, but all the default colors/fonts formatting.

After I do another setString, the text becomes the default font and black again.

Can someone explain why that is and what can I do to remedy it?

UPDATED:

Thanks for the help and clarification of the issue. I ended up just formatting it again after I setString.

[self.txtLog setFont:[NSFont fontWithName:@"courier" size:12]];
[self.txtLog setTextColor:[NSColor colorWithSRGBRed:65.0/255 green:229.0/255 blue:235.0/255 alpha:1]];

解决方案

It is because clearing the NSTextView and setting a regular (non-attributed) string removes the formatting, which includes font and color.

Most of the time, I set attributed strings that I format using HTML. I find it to be very convenient. For instance, here are two macro I use to set the color and the font:

#define color(string, color)   strAdd5(@"<font color=\"#",(color), @"\">", (string), @"</font>")
#define fontName(string, fontname) strAdd5(@"<span style=\"font-family: ",(fontname), @";\">", (string), @"</span>")
#define html2AttributedString(htmlString) [[[NSAttributedString alloc] initWithHTML:[(htmlString) dataUsingEncoding:NSUTF8StringEncoding]documentAttributes:NULL] autorelease]

Then, all I need is to set the attributed string in the text storage:

[textStorage setAttributedString:html2AttributedString(color(myNSString, @"FF0000"))]

or to use insertText of NSTextView

[textView insertText:html2AttributedString(fontName(myNSString, @"Courier New"))];

And using HTML, you can define everything including centering, and many other properties. But, you have to convert any new lines into < BR / > before converting the text.

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