align text using drawInRect:withAttributes:

Question

In the iOS 5 version of my app I had:

[self.text drawInRect: stringRect
             withFont: [UIFont fontWithName: @\"Courier\" size: kCellFontSize]
               


        

Answer 1

There is one key to set the paragraph style of the text (including line breaking mode, text alignment, and more).

From docs:

NSParagraphStyleAttributeName

The value of this attribute is an NSParagraphStyle object. Use this attribute to apply multiple attributes to a range of text. If you do not specify this attribute, the string uses the default paragraph attributes, as returned by the defaultParagraphStyle method of NSParagraphStyle.

So, you can try the following:

UIFont *font = [UIFont fontWithName:@"Courier" size:kCellFontSize];

/// Make a copy of the default paragraph style
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
/// Set line break mode
paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
/// Set text alignment
paragraphStyle.alignment = NSTextAlignmentRight;

NSDictionary *attributes = @{ NSFontAttributeName: font,
                    NSParagraphStyleAttributeName: paragraphStyle };

[text drawInRect:rect withAttributes:attributes];

Answer 2

The code is going that way:

CGRect textRect = CGRectMake(x, y, length-x, maxFontSize);
UIFont *font = [UIFont fontWithName:@"Courier" size:maxFontSize];
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
    paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;


   paragraphStyle.alignment = NSTextAlignmentRight;
    NSDictionary *attributes = @{ NSFontAttributeName: font,
                                  NSParagraphStyleAttributeName: paragraphStyle,
                                  NSForegroundColorAttributeName: [UIColor whiteColor]};
[text drawInRect:textRect withAttributes:attributes];