StackOverflow2013

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copied!<p>Well here's my excuse for needing multiline buttons: I'm writing an emulator for an IBM 701, complete with front panel, and, bless their hearts, the designers of that front panel used multi-line labels. Here's my code. You only have to subclass NSButtonCell (not NSButton), and only one method needs to be overridden.</p> <pre><code>// In Xcode 4.6 (don't know about earlier versions): Place NSButton, then double-click it // and change class NSButtonCell to ButtonMultiLineCell. @interface ButtonMultiLineCell : NSButtonCell @end @implementation ButtonMultiLineCell - (NSRect)drawTitle:(NSAttributedString *)title withFrame:(NSRect)frame inView:(NSView *)controlView { NSAttributedString *as = [[NSAttributedString alloc] initWithString:[title.string stringByReplacingOccurrencesOfString:@" " withString:@"\n"]]; NSFont *sysFont = [NSFont systemFontOfSize:10]; NSMutableParagraphStyle *paragraphStyle = [[[NSParagraphStyle defaultParagraphStyle] mutableCopy] autorelease]; [paragraphStyle setAlignment:NSCenterTextAlignment]; NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys: sysFont, NSFontAttributeName, paragraphStyle, NSParagraphStyleAttributeName, nil]; NSSize textSize = [as.string sizeWithAttributes:attributes]; NSRect textBounds = NSMakeRect(0, 0, textSize.width, textSize.height); // using frame argument seems to produce text in wrong place NSRect f = NSMakeRect(0, (controlView.frame.size.height - textSize.height) / 2, controlView.frame.size.width, textSize.height); [as.string drawInRect:f withAttributes:attributes]; return textBounds; // not sure what rectangle to return or what is done with it } @end </code></pre>

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