I am wanting to create a simple label with an attributed string. I do this like this:
NSDictionary *noNotificationsAttrs = [NSDictionary dictionaryWithObjectsAndKeys:centredStyle,
NSParagraphStyleAttributeName,
[NSFont fontWithName:@"Raleway-Bold" size:30],
NSFontAttributeName,
_grey,
NSForegroundColorAttributeName,
nil];
NSMutableAttributedString *noNotificationsString =
[[NSMutableAttributedString alloc] initWithString:@"No Notifications"
attributes:noNotificationsAttrs];
NSTextField* title_field = [[NSTextField alloc] initWithFrame:
CGRectMake(
0,
0,
200,
200
)
];
[title_field setWantsLayer:true];
[title_field setSelectable:YES];
[title_field setAllowsEditingTextAttributes:true];
[title_field setAttributedStringValue:noNotificationsString];
[title_field setEditable:false];
[title_field setBordered:false];
title_field.tag = 1;
Which turns out like this:
and
Unfortunately when clicking (selecting) this label it appears like this:
and
Which is a bit bolder and pixelated around the corners. This is happening with lots of other labels with different strings, sizes and colours. How can I fix it?!
Please note these labels are nested inside nsscrollview
-> nstableview
-> viewForTableColumn
I believe the problem is that NSCell calls an edit function on mousedown.
The font is also different on selection!!
Interestingly if I remove wantslayer:YES
from the (2) parent view it does not do this. But they both need wantslayer or else I can't have curved corners etc...
Add this line to your code.
NSTextView *textEditor = (NSTextView *)[[[NSApplication sharedApplication] keyWindow] fieldEditor:YES forObject:title_field];
[textEditor setSelectedTextAttributes:noNotificationsAttrs];
Thus adding the attributes to NSTextView associated with window while selection.
What you're getting now like bold and font changes after selection will get overrided.
Edit:
Have changed NSForegroundColorAttributeName
to NSBackgroundColorAttributeName
and _grey
to [NSColor clearColor]
NSDictionary *noNotificationsAttrs = [NSDictionary dictionaryWithObjectsAndKeys:centredStyle,
NSParagraphStyleAttributeName,
[NSFont fontWithName:@"Raleway-Bold" size:30],
NSFontAttributeName,
[NSColor clearColor],
NSBackgroundColorAttributeName,
nil];
To fix this I made a custom NSTextField where on select it updates like this:
- (void)textViewDidChangeSelection:(NSNotification *)a{
[self setNeedsDisplay:YES];
[self setNeedsLayout:YES];
[self.superview setNeedsLayout:YES];
[self.superview setNeedsDisplay:YES];
}
but still acts funny some times
I had fixed it perfect! hope to help everyone.
1.lazy property
- (NSTextField *)textFieldOne{
if (!_textFieldOne) {
_textFieldOne = ({
NSTextField *view = [[NSTextField alloc]init];
view.cell.scrollable = true;
view.font = [NSFont fontWithName:@"PingFangSC-Light" size:14];
view.cell.wraps = true;
view.editable = false;
view.selectable = true;
view.allowsEditingTextAttributes = true;
if (@available(macOS 10.12.2, *)) {
view.automaticTextCompletionEnabled = true;
} else {
// Fallback on earlier versions
}
view;
});
}
return _textFieldOne;
}
2.
// @{string: url}
NSDictionary *dic = @{
@"github/shang1219178163": @"https://github.com/shang1219178163",
};
self.textFieldOne.stringValue = [NSString stringWithFormat:@"%@\n%@\n%@", NSApplication.appName, NSApplication.appCopyright, @"github/shang1219178163"];
[self.textFieldOne setHyperlinkDic:dic];
3.
#import "NSTextField+Helper.h"
-(void)setHyperlinkDic:(NSDictionary *)dic{
// both are needed, otherwise hyperlink won't accept mousedown
NSTextField *textField = self;
NSDictionary * attributes = @{
NSFontAttributeName: textField.font,
};
__block NSMutableAttributedString *mattStr = [[NSMutableAttributedString alloc]initWithString:textField.stringValue attributes:attributes];
[dic enumerateKeysAndObjectsUsingBlock:^(NSString * key, id _Nonnull obj, BOOL * _Nonnull stop) {
NSURL *url = [NSURL URLWithString:obj];
NSAttributedString * attStr = [NSAttributedString hyperlinkFromString:key withURL:url font:textField.font];
NSRange range = [mattStr.string rangeOfString:key];
[mattStr replaceCharactersInRange:range withAttributedString:attStr];
}];
textField.attributedStringValue = mattStr;
textField.cell.wraps = true;
textField.cell.scrollable = true;
textField.editable = false;
textField.selectable = true;
textField.allowsEditingTextAttributes = true;
}
4.
#import "NSAttributedString+Helper.h"
+(id)hyperlinkFromString:(NSString *)string withURL:(NSURL *)aURL font:(NSFont *)font{
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString: string];
NSRange range = NSMakeRange(0, attrString.length);
// NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc]init];
NSDictionary * dic = @{
NSFontAttributeName: font,
NSForegroundColorAttributeName: NSColor.blueColor,
NSLinkAttributeName: aURL.absoluteString,
NSUnderlineStyleAttributeName: @(NSUnderlineStyleSingle),
// NSParagraphStyleAttributeName: paraStyle,
// NSBaselineOffsetAttributeName: @15,
};
[attrString beginEditing];
[attrString addAttributes:dic range:range];
[attrString endEditing];
return attrString;
}
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