May 2002
Intermediate to advanced
646 pages
18h 57m
English
Content preview from Building Cocoa Applications: A Step by Step GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Exercises
The font size of the input text is small for an application such as MathPaper. What changes need to be made in MathPaper to increase the font size of all mathematical expressions that are entered by the user?
Calculate
sin(pi)using this chapter’s version of MathPaper. Does anything unusual happen? If so, why, and what can be done about it?Extend the RTF class in this chapter so that it implements a larger subset of the Rich Text Format specification. To find the RTF specification, search http://msdn.microsoft.com. Use your extended class to support additional fonts and other formatting features in MathPaper windows.
Investigate the use of the Format and Font menus in Interface Builder to support additional formatting in MathPaper. Can they be used? If so, how? Implement your ideas.
Reimplement the RTF class so that it uses an NSMutableAttributedString rather than an NSMutableData object. Instead of building your own RTF, rely on the machinery inside the NSMutableAttributedString class.
Investigate the possibility of rewriting MathPaper so that it still supports RTF but doesn’t require a helper class at all. If possible, do it! First you must carefully read Cocoa’s documentation on NSText, NSTextView, and related AppKit classes. Why do you think we decided to implement MathPaper with a helper class?
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.