CREasyStyleTextStorage
CREasyStyleTextStorage is a NSTextStorage subclass that provides a convenient way to apply distinct styles to substrings. There is a demo project showing a general use case for it. PR's and Issues welcome. Lots more functionality to come.
Basic Usage
CREasyStyleTextStorage allows for specific strings to have unique styling. Configuring and using in a UITextView would look something like this.
CREasyStyleTextStorage *textStorage = [[CREasyStyleTextStorage alloc] init];
// Set default attributes
[textStorage setDefaultAttributes:@{NSFontAttributeName : [UIFont systemFontOfSize:14],
NSForegroundColorAttributeName : [UIColor blackColor]}];
// Make '@' symbols red
[textStorage setAttributes:@{NSForegroundColorAttributeName : [UIColor redColor]}
forString:@"@"];
// Make '#' symbols green
[textStorage setAttributes:@{NSForegroundColorAttributeName : [UIColor greenColor]}
forString:@"#"];
NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
[textStorage addLayoutManager:layoutManager];
NSTextContainer *container = [[NSTextContainer alloc] initWithSize:self.view.bounds.size];
[layoutManager addTextContainer:container];
UITextView *textView = [[UITextView alloc] initWithFrame:CGRectZero textContainer:container];
[self.view addSubview:textView];
