Search code examples
iosquartz-2ddrawrect

Draw changing text in the middle of a view

I need to draw text in the middle of a view, the text can be 1 letter or few words. I am drawing the text in the - (void)drawRect:(CGRect)rect method.

What I want is that the text will be centered horizontally and vertically (I know how to do that). BUT I want the font size update according to the text length so:

a string like "S" will be drawn in a 90 points font size but "hello world" will be drawn in 30 points font size.

Any Ideas?

Solution

  • UILabel can be used to center vertically and horizontally. Using adjustsFontSizeToFitWidthit can also shrink the text to fit within the label's width.

    label.adjustsFontSizeToFitWidth = YES;
label.minimumFontSize = 10.0; // or whatever...

    If you need more control of the size I think you have to do the positioning your self. You can use the sizeWithFont: and sizeWithFont:forWidth:lineBreakMode: messages on a NSString to get the size of your string with a certain font - and then figure out what size to use and where to draw it. See the documentation.