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2014/10/15 ¤U¤È 10:04:32
iphone Programming Glossary: baselineoffsetHow to programmatically add a UINavigationBar and a back button on it http://stackoverflow.com/questions/13565962/how-to-programmatically-add-a-uinavigationbar-and-a-back-button-on-it context NSUInteger numberOfLines self.contentSize.height self.bounds.size.height self.font.leading CGFloat baselineOffset 6.0f for int x 0 x numberOfLines x CGContextMoveToPoint context self.bounds.origin.x self.font.leading x 0.5f baselineOffset.. 6.0f for int x 0 x numberOfLines x CGContextMoveToPoint context self.bounds.origin.x self.font.leading x 0.5f baselineOffset CGContextAddLineToPoint context self.bounds.size.width self.font.leading x 0.5f baselineOffset CGContextClosePath context.. x 0.5f baselineOffset CGContextAddLineToPoint context self.bounds.size.width self.font.leading x 0.5f baselineOffset CGContextClosePath context CGContextStrokePath context AddNotesViewController.h @interface AddNotesViewController UIViewController..
UITextView ruled line background but wrong line height http://stackoverflow.com/questions/5375350/uitextview-ruled-line-background-but-wrong-line-height self.font.leading Set the line offset from the baseline. I'm sure there's a concrete way to calculate this. CGFloat baselineOffset 6.0f iterate over numberOfLines and draw each line for int x 0 x numberOfLines x 0.5f offset lines up line with pixel boundary.. offset lines up line with pixel boundary CGContextMoveToPoint context self.bounds.origin.x self.font.leading x 0.5f baselineOffset CGContextAddLineToPoint context self.bounds.size.width self.font.leading x 0.5f baselineOffset Close our Path and Stroke.. x 0.5f baselineOffset CGContextAddLineToPoint context self.bounds.size.width self.font.leading x 0.5f baselineOffset Close our Path and Stroke draw it CGContextClosePath context CGContextStrokePath context @end MyViewController.h #import..
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