Apple Newton Utilities Guide de l'utilisateur télécharger pdf (Page 70)

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CHAPTER 1

Overview

1-22 What’s New in Newton 2.0

The implementation of undo has changed to an undo/redo model instead of two

levels of undo, so applications must support this new model.

Recognition 1

Recognition enhancements include the addition of an alternate high-quality

recognizer for printed text and signiﬁcant improvements in the cursive recognizer.

While this doesn’t directly affect applications, it does signiﬁcantly improve

recognition performance in the system, leading to a better user experience. Other

enhancements that make the recognition system much easier to use include a new

correction picker, a new punctuation picker, and the caret insertion writing mode

(new writing anywhere is inserted at the caret position).

Speciﬁc enhancements of interest to developers include the addition of a

recConfig frame, which allows more flexible and precise control over

recognition in individual input views. A new proto,

protoCharEdit, provides a

comb-style entry view in which you can precisely control recognition and restrict

entries to match a predeﬁned character template.

Additionally, there are new functions that allow you to pass ink text, strokes, and

shapes to the recognizer to implement your own deferred recognition. Detailed

recognition corrector information (alternate words and scores) is now available

to applications.

Sound 1

The interface for playing sounds is enhanced in Newton 2.0. In addition to the

existing sound functions, there is a new function to play a sound at a particular

volume and there is a new

protoSoundChannel object. The

protoSoundChannel object encapsulates sounds and methods that operate on

them. Using a sound channel object, sound playback is much more ﬂexible—the

interface supports starting, stopping, pausing, and playing sounds simultaneously

through multiple sound channels.

Built-in Applications 1

Unlike in previous versions, the built-in applications are all more extensible in

version 2.0. The Notepad supports stationery, so you can easily extend it by adding

new “paper” types to the New pop-up menu. The Names ﬁle also supports stationery,

so it’s easy to add new card types, new card layout styles, and new data items to

existing cards by registering new data deﬁnitions and view deﬁnitions for the

Names application. There’s also a method that adds a new card to the Names soup.

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Apple Newton Utilities Guide de l'utilisateur Page 70

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