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POCTFrame clipping first line of text
 

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    <p>I am running into a problem while using Core Text, where the first line of the text I display in a <code>CTFrame</code> is cut off at the top, as seen in the screenshot below, with the character "B":</p> <p><img src="https://i.stack.imgur.com/nsFpS.png" alt="Example of CTFrame clipping first line"></p> <p>I think I'm doing something wrong while setting the leading in the <code>CTFrame</code>. My code is below:</p> <pre><code>- (void)drawRect:(CGRect)rect { [super drawRect:rect]; CGContextRef context = UIGraphicsGetCurrentContext(); NSAttributedString *myString; //Create the rectangle into which we'll draw the text CGMutablePathRef path = CGPathCreateMutable(); CGPathAddRect(path, NULL, self.bounds); //Flip the coordinate system CGContextSetTextMatrix(context, CGAffineTransformIdentity); CGContextTranslateCTM(context, 0, self.bounds.size.height); CGContextScaleCTM(context, 1.0, -1.0); //Setup leading (line height) CGFloat lineHeight = 25; CTParagraphStyleSetting settings[] = { { kCTParagraphStyleSpecifierMinimumLineHeight, sizeof(CGFloat), &amp;lineHeight }, { kCTParagraphStyleSpecifierMaximumLineHeight, sizeof(CGFloat), &amp;lineHeight }, }; CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(settings, sizeof(settings) / sizeof(settings[0])); NSDictionary * attrs = [[NSDictionary alloc] initWithObjectsAndKeys: (__bridge id)CTFontCreateWithName((__bridge CFStringRef) font.fontName, font.pointSize, NULL) , (NSString*)kCTFontAttributeName, (id)textColor.CGColor, (NSString*)kCTForegroundColorAttributeName, (__bridge id) paragraphStyle, kCTParagraphStyleAttributeName, nil]; myString = [[NSAttributedString alloc] initWithString:text attributes:attrs]; CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((__bridge CFAttributedStringRef)myString); CTFrameRef frame = CTFramesetterCreateFrame(framesetter, CFRangeMake(0,[myString length]), path, NULL); CTFrameDraw(frame, context); CFRelease(frame); CFRelease(framesetter); CFRelease(path); } </code></pre> <p>Other SO posts (<a href="https://stackoverflow.com/questions/9017593/setting-line-spacing-in-a-ctframe">this one</a> and <a href="https://stackoverflow.com/questions/5511830/how-does-line-spacing-work-in-core-text-and-why-is-it-different-from-nslayoutm">this one</a>) are not really helpful. </p> <p>How can I prevent the <code>CTFrame</code> from clipping the first line? </p> <p><strong>--EDIT--</strong></p> <p>Reducing <code>lineheight</code> to 20:</p> <p><code>lineheight</code> from the second line onwards is respected, but the baseline of the first line of text is less than 20 below the top.</p> <p><img src="https://i.stack.imgur.com/L1w2s.png" alt="enter image description here"></p>
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