TweetFollow Us on Twitter

Typography
Volume Number:5
Issue Number:10
Column Tag:Developer's Notes
Related Info: Font Manager

New Typographic Frontier

By Frank Alviani, Waukegan, IL

Apple’s New Typographic Universe

At the 1989 Developers’ Conference, Apple revealed an entirely new typographic universe to 1500 eager supporters. The combination of a new font technology, a greatly enhanced line layout manager, and an entirely new printer driver architecture promises to make the Macintosh the premier machine for print-oriented graphics, and open new opportunities for Macintosh developers. The three features are closely related and need to be discussed together to understand the full impact.

Why Outline Fonts?

The two great advantages of outline fonts are the ability to display them nicely at any point size, and their compactness when compared to a reasonably large set of bitmaps. For example, the full set of bitmaps for the (exceptionally nice) Clairvaux font occupies over 200K, while the outline description is estimated to average 40-60K. They are not magic, however - just a shorthand method for describing bitmaps.

Ultimately, all raster devices actually use bitmaps to place the characters of a font into an image; it doesn’t matter whether you’re talking about a 2540 dpi Linotronic imagesetter or a 72 dpi 128K Macintosh. What outline fonts provide is an efficient way to generate a bitmap of a specified character at an arbitrary size that can then be saved and used whenever needed. The “quality” of an outline font system depends on two factors:

1) The quality of the generated bitmap. If the bitmap generated by the process is not visually appealing, nothing else matters.

2) The speed of the generation process. If it takes forever to create a bitmap of a character, who would use that process?

The process of generating a bitmap consists, for both the Apple and Postscript systems, of two basic parts: creating the basic bitmap, and making any small adjustments necessary for the best appearance at small point sizes. Creating the bitmap from an outline description can be visualized as drawing the outline over a grid of small squares, and filling in all the squares that fall at least partially within the outline.

If you carried out this little exercise, you were probably bothered by some of the effects of filling in squares that only partially fell within the outline. This demonstrates the problems encountered with small type on machines with relatively low resolution (large pixels). Small point sizes are a problem for all systems simply because:

1) With low resolution and small point sizes, a single pixel occupies a significant percentage of an image. Therefore, it is important to make sure every pixel is optimally placed.

2) “The jaggies” are unavoidable, but a visual decision on where a pixel looks best sometimes differs from a purely mathematical decision. Naturally, this conflict is more significant when there are only a few pixels to play with.

3) While the idealized pixel is generally square, real world pixels never are, whether you are dealing with a CRT or a LaserWriter imaging drum. This means that corrections must be made to account for the visual effects of the actual pixel shapes on the equipment being used. There are two basic shapes of “real” pixels:

The reason for the different shapes is that in reality all pixels tend to be convex; however, when convex white pixels are drawn over black to define a black pixel, the black pixel is left with concave edges.

One of the major advantages of the Apple outline font system from the artist’s viewpoint is that the entire “hinting” language needed to make the bitmap adjustments is precisely defined in complete detail; this is in contrast to the undocumented system used by Adobe, which has historically given them a small but important advantage over their competitors in image quality. The features included in the hinting language were chosen to include all the features used by the major type foundries, thus making the conversion of fonts by those type foundries to the Apple format as accurate as possible. The result should be a steady flow of very high quality fonts once System 7.0 is in place. In fact, Apple has been working with most of the major type foundries in developing their system.

Another result of Apple’s decision to publish the complete specifications of its outline font system is that we can expect to see one or more font editors enter the market that will allow the artist to completely specify the hinting required for the best possible quality at small point sizes. This levels the playing field and places the competitive emphasis on artistic ability rather than secret technology, which will be to everyone’s benefit in the long run.

Apple’s font descriptions, using quadratic splines, are designed to be simple enough that it is reasonable to use them for interactive displays such as the Macintosh itself; the original Postscript model (which uses Bezier curves - a more complex equation form) is oriented towards printing engines. The fundamental approach is to generate the required bitmaps for an entire size when first requested and cache them; thus, the overhead is only incurred once. Once the bitmaps have been built, the Macintosh text operations are exactly as fast as when using the “old” fonts. “Old style” fonts are completely compatible with the new system. This means that you won’t need to throw out all those nifty display fonts you already have when you install System 7.0

What’s so important about the new Line Layout Manager?

While the new font manager provides very precise control of the shape of letters, the new line layout manager provides some very powerful and impressive capabilities in conjunction with the new font descriptions. One of the primary goals of this manager is to work together with the Text Edit package, using information provided in the font descriptions, to greatly enhance the line layout facilities available to the developer and user. The preliminary description handed out at the Developers’ Conference noted that many of the features of the Layout Manager, while optional in English and other roman-script languages, are mandatory for acceptable text display in many other languages.

There are two basic types of features implemented in the Layout Manager: Positional features, and Non-positional features. As you probably have deduced from the names, the positional features affect horizontal and vertical positioning of characters, while non-positional features primarily affect character shaping. The distinction will become clearer when I list some of the individual items in each group.

Positional Features. These include the types of manipulations traditionally considered part of “fine typography”, such as

• Kerning: This is the most basic positional manipulation. It involves moving a pair of characters (such as T-y) closer together to improve the appearance of the text. When “negative kerning” is done it is often termed letterspacing.

• Optical alignment: This is the adjustment of positioning so that margins are optically correct. The problem arises because of the space surrounding a character that is part of it’s definition.

• Hanging punctuation: Punctuation marks are often placed “outside” the margins since they are optically small so that the optical flushness of the margins looks better. A line ending with a period, for example, seems to be visually slightly ragged.

• Justification and centering: Just what they sound like.

Non-positional features. These are features that concentrate on refining the shape of letters, primarily in response to the immediate context for each letter. Many of these features were difficult to implement, to say the least, with a traditional typesetting system. A partial list of these features includes:

• Ligaturing: This is the combination of two letters into a single graphic, and was traditionally done both for more compact layout and for a more elegant appearance. Common ligatures include “æ”, “œ”, etc.

• Contextual forms: As the name suggests, this is a technique for shaping a letter to look best in a very specific context. For example, a capital ‘L’ with a long low horizontal stroke that goes under the succeeding character is very attractive as long as the succeeding character doesn’t have a descender. With contextual reforming, the Layout Manager can chose a non-underlining form if the succeeding character has a descender. For example:

• Applied marks: These are typically various forms of accents, such as the tilde (~) or accent (‘). There are various styles of positioning these.

• Reordering of graphics: In certain non-roman languages, such as Sanskrit, the order of characters is dominated by their shape, so that the visible order of certain character combinations may not correspond to their logical order. This reordering, fortunately, follows firm rules and not artistic whim.

It should be emphasized that the modifications that can be applied by the Layout Manager happen fast enough to be very real-time. Many of the features of the Layout Manager are specified in the font description, so that the type artist can have precise control over contextual reformatting, for example, which is automatically applied without any intervention by the application.

Certain Text Edit functions are now better carried out by the Layout Manager. In particular, these include the text measuring and caret management functions, which are very dependent on the higher precision supported. Highlighting can now be non-rectangular and non-contiguous, for example. As in FullWrite, a caret in italic text is slanted at the proper angle, which actually serves to make placement much easier.

The combination of the new font descriptions and the power of the Layout Manager gives the Mac user the power to create text with every typographic refinement available to the traditional typesetter, and then some. Up until now, however, everything I’ve talked about seems to have been limited to the screen - so what good does it do when the ink hits the paper?

The New Printing Architecture - Getting It All Down in Black and White.

And other colors as well, of course... Printer drivers have always been one of the sore spots in the Macintosh architecture, being extremely difficult to write well and tending towards instability. Apple’s stated goals for System 7.0 required that the entire internal design approach for these drivers be changed. As a result, the new drivers are totally new code, with considerable advantages.

The new driver structure is explicitly layered into: (1) An I/O layer specialized for a number of device types, (2) A “Food Processor” layer that handles the bulk of the work of dicing, slicing, and chopping the user’s requests into device-specific byte streams, and (3) A specification layer, making up about 10% of a driver, that is actually written by the driver author to describe the hardware-dependent aspects of the device and thus convert generic requests by the user into specific calls to the food processor, where the actual conversions take place.

As shown in the diagram, there are several different devices supported. According to an experienced printer-driver author I spoke to, driving a film recorder is actually the most difficult, due to extremely stringent timing constraints. Perhaps the most interesting from a marketing viewpoint is the “R.I.P.” - the Raster Image Processor that forms the heart of the modern typesetter, or imagesetter. While it was firmly stated that Apple would never license the technology at the core of the image creation process, a Mac II-class machine with an EtherNet card would be very viable as the heart of a relatively low-price high resolution typesetter that could very effectively compete with a Postscript typesetter. I don’t expect that it will take too long for such a device to appear on the market

Unlike the previous structure, the new printer manager is explicitly designed to simplify the task of writing output drivers as much as possible. The authors claimed at the Developers’ Conference that the average time to create a printer driver would decrease from months to days, and that they had created several test drivers in less than a day.

The motivation for the support of 3rd party devices is simple: Apple has decided that support for the widest possible variety of printers, plotters, etc. is necessary to make the Mac the printing platform of choice. As conclusive evidence of this, they revealed that the “print shop” is now committed to actively supporting everyone who wishes to make a Mac-compatible printer - even though they believe that the LaserWriter will lose market share as a result.

There are a number of additional major enhancements to the printing capabilities of the Mac. Among the more important ones are:

• The ability to redirect spooled output after before printing. This means that if a particular LaserWriter turns out to be extremely busy, you can send a waiting document to another printer without having to reprint it. For this alone, most people would be ecstatic.

• The ability to redirect a printed document to a printer of a different type without having to reprint it, and without having the layout recalculated. This may require some cooperation on the part of the application authors; the basic idea is the the application will output both a “final” quality and a “draft” quality version at the same time; the draft quality component will use the layout information for the final quality portion. This means that you can choose a LaserWriter for the final output device, but send the document to an ImageWriter II and get an accurate idea of the final appearance.

• The ability to keep a spooled document after it’s been printed, so that munged pages could be reprinted if necessary.

• Further off in the future (post-System 7.0), support for high-volume remote printing stations that would include multiple output queues (so you could just say “Use the 1st available LaserWriter” rather than having to explicitly pick one), good status reporting, and other features designed to work in an environment such as many large offices.

• Greatly redesigned user-interfaces for the printer dialogs, allowing you to choose a printer from a printer dialog, set a custom page size for a job, and support multiple page types in a single job (such as a #10 envelope and legal paper), among other things.

From the viewpoint of an application developer, there were several critical matters that are being handled properly in the new approach. First, the application’s interface to the printer drivers is structurally identical to the way matters work today, although routine names have been changed to protect the innocent. This means - hopefully - that a simple conversion will be all that’s needed to become printing compatible with System 7.0. Secondly, recognizing that the new functionality is too radically different from that in pre-System 7.0 systems, Apple is making no attempt to make the new drivers work in older systems - which means that past mistakes are not going to be anchors on the new drivers. The downside is that no existing drivers will work under System 7.0, but changing printer drivers is a fairly trivial matter. Finally, the print shop claimed the new drivers are noticeably faster than the older drivers - which cheered everybody.

Perhaps the most important fact was that the print samples shown were of uniformly excellent quality. I once worked for a typesetter manufacturer, and the output I saw at the Developers’ Conference was on a par with “real” typesetters.

What’s ahead in the future?

As if all these developments weren’t enough, a little information about future developments leaked out - just enough to tantalize. The Remote Printing Stations were fairly explicitly described, but we were cautioned that they wouldn’t be ready in time for System 7.0. It was stated that the new font system will support rotated text, but that the current implementation of Quickdraw couldn’ handle it. And finally, somebody in development was overhead mentioning that the resolution-independent version of Quickdraw would support the rotated text, but that an implementation compatible with existing applications was proving difficult and was “a ways off”.

So much for my Robert Cringely imitation; now back to reality

What do these developments actually mean?

The most important outcome from these new developments is that finally a single imaging model will be usable on everything from the Mac screen to a high-resolution imagesetter, eliminating the mis-matches that now make WYSIWYG really mean “What You See Is Almost What You Get”. This gives Apple a dramatic advantage over competing machines, where there are always differences between the screen and hardcopy graphic models, with the ensuing annoyances.

From the users’ viewpoint, the most noticeable immediate change will be that the quality of text on the screen is going to improve dramatically. This should make the Mac even more competitive against the MS-DOS machines. Once the user starts printing documents, the new speed and flexibility should be very pleasing.

It should be emphasized that your Postscript fonts and printers don’t become instantly obsolete with System 7.0. The Postscript drivers are intelligent enough to determine if you are using a resident font and to use that directly, rather than try to stuff the Apple version of Courier into a PostScript printer.

Ultimately, we all win - better output and applications for the user, and a larger market for the developer!

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Sparkle Pro 2.2 - $79.99
Sparkle Pro will change your mind if you thought building websites wasn't for you. Sparkle is the intuitive site builder that lets you create sites for your online portfolio, team or band pages, or... Read more
Spotify 1.0.57.474. - Stream music, crea...
Spotify is a streaming music service that gives you on-demand access to millions of songs. Whether you like driving rock, silky R&B, or grandiose classical music, Spotify's massive catalogue puts... Read more
beaTunes 5.0.1 - Organize your music col...
beaTunes is a full-featured music player and organizational tool for music collections. How well organized is your music library? Are your artists always spelled the same way? Any R.E.M. vs REM?... Read more
LibreOffice 5.3.4.2 - Free, open-source...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
VOX 2.8.26 - Music player that supports...
VOX just sounds better! The beauty is in its simplicity, yet behind the minimal exterior lies a powerful music player with a ton of features and support for all audio formats you should ever need.... Read more
iFFmpeg 6.4.0 - Convert multimedia files...
iFFmpeg is a comprehensive media tool to convert movie, audio and media files between formats. The FFmpeg command line instructions can be very hard to master/understand, so iFFmpeg does all the hard... Read more
Beamer 3.3 - Stream any movie file from...
Beamer streams to your Apple TV.... Plays any movie file - Just like the popular desktop movie players, Beamer accepts all common formats, codecs and resolutions. AVI, MKV, MOV, MP4, WMV, FLV. To... Read more
jAlbum Pro 14.0 - Organize your digital...
jAlbum Pro has all the features you love in jAlbum, but comes with a commercial license. You can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly... Read more
Apple Remote Desktop Client 3.9.3 - Clie...
Apple Remote Desktop Client is the best way to manage the Mac computers on your network. Distribute software, provide real-time online help to end users, create detailed software and hardware reports... Read more
Chromium 59.0.3071.109 - Fast and stable...
Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all Internet users to experience the web. Version 59.0.3071.109: This update has no Flash plug-... Read more

Latest Forum Discussions

See All

The House of da Vinci (Games)
The House of da Vinci 1.0.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.0 (iTunes) Description: Enter The House of Da Vinci, a new must-try 3D puzzle adventure game. Solve mechanical puzzles, discover hidden... | Read more »
Solve the disappearance of history’s gre...
Blue Brain Games invites you to indulge in an immersive hands-on 3D puzzle adventure in similar vein to The Room series, with its debut release The House of Da Vinci. Set during the historic period of the Italian Renaissance (when Leonardo himself... | Read more »
Age of Rivals (Games)
Age of Rivals 3.3 Device: iOS Universal Category: Games Price: $.99, Version: 3.3 (iTunes) Description: Deep civilization-building strategy in a fast-paced card game! | Read more »
Panthera Frontier (Games)
Panthera Frontier 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: | Read more »
Angry Birds Evolution beginner's gu...
Angry Birds changes things up a fair bit in its latest iteration, Angry Birds Evolution. The familiar sling-shot physics mechanics are still there, but the game now features team-based gameplay, RPG elements, and a new top-down view. With all of... | Read more »
Sega Forever is for the retro game fans
Sega is launching a new retro games service titled Sega Forever, in a move that's sure to delight games enthusiasts with a bit of nostalgia. Sega's releasing five classic games for free. The titles include Sonic the Hedgehog, Phantasy Star II,... | Read more »
The Little Acre (Games)
The Little Acre 1.0 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: | Read more »
Lovely adventure game 'The Little A...
The Little Acre makes its way from PC to iOS today and it's a real charmer. It's a lovely little adventure game set in 1950's Ireland, gorgeously animated in a style slightly reminiscent of old Disney films. The game won a lot of praise for its... | Read more »
Futurama: Worlds of Tomorrow officially...
Futurama: Worlds of Tomorrow arrives next Thursday, and it features . . . Stephen Hawking? Turns out a few of your favorite science super stars, including Bill Nye, Neil DeGrasse Tyson, and George Takei will be making an appearance alongside the... | Read more »
MU Origin’s new update offers exciting c...
MU Origin is kicking off the summer with style. Its latest update is a real doozy, offering up plenty of fresh content. New challenges, some extra help for newcomers, and new costumes are just a few of the things you will find in the new patch. | Read more »

Price Scanner via MacPrices.net

Save this weekend with 2016 refurbished MacBo...
Apple has dropped prices on Certified Refurbished 2016 15″ and 13″ MacBook Pros by as much as $590 off original MSRP. An Apple one-year warranty is included with each model, and shipping is free: -... Read more
New 27-inch 3.4GHz iMac on sale for $1699, sa...
MacMall has the new 2017 27″ 3.4GHz iMac (MNE92LL/A) in stock and on sale for $1699 including free shipping. Their price is $100 off MSRP. Read more
Clearance 2016 MacBook Pros available for up...
B&H Photo has clearance 2016 13″ and 15″ MacBook Pros in stock today and on sale for up to $400 off original MSRP. Shipping is free, and B&H charges NY & NJ sales tax only: - 15″ 2.7GHz... Read more
Apple Ranks 9th In comScore Top 50 U.S. Digit...
comScore, Inc. has released its monthly ranking of U.S. online activity at the top digital media properties for May 2017 based on data from comScore Media Metrix Multi-Platform. * Entity has... Read more
10.5-inch iPad Pros available for up to $20 o...
B&H Photo has the new 2017 10.5″ iPad Pros available for up to $20 off MSRP including free shipping plus NY & NJ sales tax only: - 64GB iPad Pro WiFi: $649 - 256GB iPad Pro WiFi: $749 - 512GB... Read more
Three Off-The-Beaten-Track iOS Apps That Dese...
One of the great things about using iPads and iPhones is the vast selection of apps available for most anything you want or need to do. The three outlined in this article have been in my core app... Read more
Apple No. 1 Spot In Gartner Top 100 Vendors i...
Gartner, Inc. has unveiled the top global 100 vendors in IT in 2016 based on their revenue across IT (excluding communication services) and component market segments. In the Gartner Global Top 100:... Read more
Clearance iMacs available for up to $300 off...
B&H Photo has clearance 21″ and 27″ Apple iMacs available starting at $949, each including free shipping plus NY & NJ sales tax only: - 27″ 3.3GHz iMac 5K: $1999 $300 off original MSRP - 27″... Read more
1.4GHz Mac mini, refurbished, available for $...
The Apple Store has Apple Certified Refurbished 1.4GHz Mac minis available for $419. Apple’s one-year warranty is included, and shipping is free. Their price is $80 off MSRP, and it’s the lowest... Read more
Free Mixoo iOS Photo Editing App Gets Major U...
Button Software Technology has announced Mixoo 3.0, an important feature update to the company’s photo editor for iOS devices. Mixoo offers amazing ways to edit as well as decorate personal photo... Read more

Jobs Board

*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Security Data Analyst - *Apple* Information...
…data sources need to be collected to allow Information Security to better protect Apple employees and customers from a wide range of threats.Act as the subject matter Read more
Lead *Apple* Solutions Consultant - Apple I...
…integrity, and trust.Success Metrics/Key Performance Indicators:Quantitative* Year over Year growth in Apple Product and Beyond the Box sales in the assigned Point of Read more
*Apple* Solutions Consultant till v%u00E5r...
…ethics, integrity, and trust.Success Metrics/Key Performance Indicators:QuantitativeYear over Year growth in Apple Product and Beyond the Box sales in the assigned Point Read more
Sr. Software Engineer, *Apple* Retail - App...
Apple Retail is looking for a Software Engineer…You'll work on projects that touch all aspects of Apple Retail Point-of-Sale system, and will leverage your strong Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.