Re: How to draw correct underline ?
Re: How to draw correct underline ?
- Subject: Re: How to draw correct underline ?
- From: Eric Morand <email@hidden>
- Date: Thu, 25 Aug 2005 17:39:06 +0200
Now that you American fellows are awake, let me push that question up
again ! :o)
Le 25 août 05 à 14:16, Eric Morand a écrit :
Even worse : here is the same view using the code given by Apple
(!!!) to draw hyperlink-like text :
- (void)drawRect:(NSRect)rect
{
NSMutableAttributedString *string = [[NSMutableAttributedString
alloc] initWithString:@"This is a test to show ugly underlining !"];
NSRange selectedRange = NSMakeRange(0,[string length]);
NSMutableDictionary *linkAttributes = [NSMutableDictionary
dictionary];
[linkAttributes setObject:@"HTTP" forKey:@"type"];
[linkAttributes setObject:@"http://www.apple.com/";
forKey:@"destination"];
[string beginEditing];
[string addAttribute:NSLinkAttributeName value:linkAttributes
range:selectedRange];
[string addAttribute:NSForegroundColorAttributeName value:
[NSColor blueColor] range:selectedRange];
[string addAttribute:NSUnderlineStyleAttributeName value:
[NSNumber numberWithInt:NSSingleUnderlineStyle] range:selectedRange];
[string endEditing];
[string drawInRect:rect];
}
Awful !
You can find this sample code in Apple documentation, Attributed
Strings Programming Guide, Changing an Attributed String.
It seems like even Apple docs don't know how to draw a correct
underline !
I'm pretty sure some of you have underlined texts in their app !
Can't someone help me on this ?
Eric.
Le 25 août 05 à 13:55, Eric Morand a écrit :
Just to give you an easy way to test the ugly underline symptom,
here is a custom view that only draw a string underlined :
//
// TestView.h
// Test
//
// Created by Eric on 25/08/05.
// Copyright 2005 __MyCompanyName__. All rights reserved.
//
#import <Cocoa/Cocoa.h>
@interface TestView : NSView {
}
@end
//
// TestView.m
// Test
//
// Created by Eric on 25/08/05.
// Copyright 2005 __MyCompanyName__. All rights reserved.
//
#import "TestView.h"
@implementation TestView
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
}
return self;
}
- (void)drawRect:(NSRect)rect
{
[@"This is a test to show the ugly underline !"
drawInRect:rect withAttributes:[NSDictionary dictionaryWithObject:
[NSNumber numberWithInt:1] forKey:NSUnderlineStyleAttributeName]];
}
@end
Pretty straightforward, right ?
Well, put a custom view in IB, change its class to TestView,
compile and launch your app.
I just want perfect underline just like here !
If anyone can help...
Eric.
Le 25 août 05 à 11:20, Eric Morand a écrit :
Hi list !
In the process of underlining the text string of a control, I've
noticed that the underline is pretty ugly.
Using the following string attributes :
highlightedStringAttributes = [[NSDictionary
dictionaryWithObjectsAndKeys:[self font], NSFontAttributeName,
[NSColor blackColor], NSForegroundColorAttributeName, [NSNumber
numberWithInt:1], NSUnderlineStyleAttributeName, nil] retain];
...the underline drawn under the string when using...
[[self title] drawInRect:textRect withAttributes:stringAttributes];
...is gray (not even constant gray !) instead of black and is not
1 point high but 2 !
Is there a way to draw a correct underline ?
Thanks by advance,
Eric.
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