TweetFollow Us on Twitter

Autumn 91 - PRINT HINTS FROM LUKE & ZZ

PRINT HINTS FROM LUKE & ZZ

COPYMASK, COPYDEEPMASK, AND LASERWRITER DRIVER 7.0

PETE "LUKE" ALEXANDER and Zz

[IMAGE 041-042_Luke's_column_ht1.GIF]

Luke speaks

With the release of System 7 comes a new release of the LaserWriter driver, version 7.0. Yes, the great implementors (GIs) have once again created another version of this driver. This version supports TrueType fonts, it's 32-bit clean, it has the new PostScript file-saving capability, and it remembers the last setting of the Black & White and Color/Grayscale print buttons (HOORAY!!).

Along comes our hero, Dudley Developer. He's been using the new CopyMask and CopyDeepMask calls that are available in QuickDraw in System 7 and he's very excited about printing his new images with the LaserWriter driver. He assumes that since QuickDraw supports the new CopyMask and CopyDeepMask calls, the LaserWriter driver 7.0 will also support them.

Bad assumption. Our hero has not been keeping up with current events. He has not even read "QuickDraw's CopyBits Procedure: Better Than Ever in System 7.0" in Issue 6 ofdevelop . If he had, he would know that, like previous versions of the LaserWriter driver, LaserWriter driver 7.0 does not directly support the CopyMask and CopyDeepMask calls.

So, in his ignorance, our hero creates a few pictures with the new QuickDraw calls, and sends them off to the LaserWriter. Time goes by, paper comes out, but the picture doesn't look the same as it did on his monitor. It has lost some of the cool effects from CopyMask and CopyDeepMask.

Why, he wonders, won't LaserWriter driver 7.0 print his images with the same effects provided by the CopyMask and CopyDeepMask calls? What was Apple thinking when they created LaserWriter driver 7.0? How could they release a driver that doesn't support the new 32-bit QuickDraw calls? How do they expect him to print his new cool pictures created in System 7 with these calls?

To attempt to understand the problem, Dudley looks between the covers of the Adobe red book (a.k.a. PostScript Language Reference Manual by Adobe Systems). Even he knows transfer modes would be required to support the new calls--but alas, he doesn't find any information on them, because PostScript level 1 doesn't understand transfer modes. Unfortunately, the LaserWriter driver won't rewrite PostScript for you; it just merrily converts your QuickDraw calls into their equivalent PostScript call. The LaserWriter driver always uses the srcCopy transfer mode when it prints a pixel map, regardless of the mode used when the picture was created. (Why srcCopy? Because of the limitations of the color model and the lack of transfer mode support provided by PostScript level 1.)

Thereis a method that will allow Dudley to print the images he created, but as usual with printing, he'll need to do a little more work: he'll need to use GWorlds and PrGeneral. Since our hero is not familiar with using GWorlds, he decides to go back through his old issues ofdevelop , hoping for an article. Luckily, he finds just what he's looking for in Issue 1: "Realistic Color for Real-World Applications" and "Braving Offscreen Worlds." And the CD contains the sample code that uses GWorlds. So, after reading the articles and trying the code, Dudley is all set to create an off-screen world to hold his image. He realizes that to get the best print quality, he'll need to make the GWorld bigger than the picture on the screen. The GWorld should be the size of the grafPort returned by the application's call to PrOpenDoc, at the printer's resolution. Dudley knows he needs a device- independent method to acquire this information, and he knows he can get it by using PrGeneral's GetRslData opcode. And even better still, he remembers an article about using PrGeneral from Issue 3 of develop . The article was titled "Meet PrGeneral," and it contained complete sample code. Yippee! After using the GetRslData opcode to determine the resolutions supported by the currently selected printer, he uses the SetRsl opcode to set the printer to the resolution he wants. When his application calls PrOpenDoc, the printer driver will return a grafPort that's sized correctly for the resolution he chose.

Next, Dudley creates the correctly sized off-screen world and draws his image using CopyMask or CopyDeepMask. He just needs to remember that since the CopyMask and CopyDeepMask calls are not saved in pictures, he needs to make the calls directly into his off-screen world (not relying on DrawPicture). So, when he's ready to print his image, Dudley uses CopyBits to copy it from his GWorld into the printer's grafPort with srcCopy. That's it; his totally cool image has been printed in living color (or anemic gray scales, if he's printing to the LaserWriter).

This wasn't so bad, but our hero is wondering--when will the GIs make this easier? When will all of this incompatibility between QuickDraw and the LaserWriter driver improve? That's a really good question. The GIs tell me things will probably not improve until the new printing architecture is released. In the meantime, you've got this way around the problem, and at least it isn't too ugly!


REFERENCES

  • "QuickDraw's CopyBits Procedure: Better Than Ever in System 7.0," develop Issue 6, Spring 1991.
  • "Meet PrGeneral, the Trap That Makes the Most of the Printing Manager" develop Issue 3, July 1990.
  • "Realistic Color for Real-World Applications," develop Issue 1, January 1990.
  • "Braving Offscreen Worlds," develop Issue 1, January 1990.
  • Inside Macintosh , Volume V, Color Manager chapter, Addison-Wesley, 1988.

PETE "LUKE" ALEXANDER After taking almost a year to check out Ford Explorers in parking lots and dealerships, Luke has, in a surprise move, actually purchased one of his own. At SIGGRAPH in Las Vegas he ran into some Ford engineers; they were surprised, but not seriously hurt. They asked increduously, "Have you driven a Ford lately?" Luke left wondering what kind of inside information they had. He knew for sure, though, that the animation was his favorite part of the show-- which figures, since since he's so used to working with Zz, our resident cartoon character. Not surprisingly, the Las Vegas show he talked about the most had little to do with computers! He also enjoys the show at Gordon Biersch, a local brew pub known for its good beer and yuppie clientele. Luke says he goes there to see how yuppie scum lives, but every once in a while we think he already knows.*

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Paragraphs 1.0.1 - Writing tool just for...
Paragraphs is an app just for writers. It was built for one thing and one thing only: writing. It gives you everything you need to create brilliant prose and does away with the rest. Everything in... Read more
BlueStacks App Player 0.9.21 - Run Andro...
BlueStacks App Player lets you run your Android apps fast and fullscreen on your Mac. Version 0.9.21: Note: Now requires OS X 10.8 or later running on a 64-bit Intel processor. Initial stable... Read more
Apple iTunes 12.2 - Play Apple Music...
Apple iTunes lets you organize and stream Apple Music, download and watch video and listen to Podcasts. It can automatically download new music, app, and book purchases across all your devices and... Read more
Apple Security Update 2015-005 - For OS...
Apple Security Update 2015-005 is recommended for all users and improves the security of OS X. For detailed information about the security content of this update, please visit: http://support.apple.... Read more
Apple HP Printer Drivers 3.1 - For OS X...
Apple HP Printer Drivers includes the latest HP printing and scanning software for OS X Lion or later. For information about supported printer models, see this page. Version 3.1: The latest printing... Read more
Epson Printer Drivers 3.1 - For OS X 10....
Epson Printer Drivers installs the latest software for your EPSON printer or scanner for OS X Yosemite, OS X Mavericks, OS X Mountain Lion, and OS X Lion. For more information about printing and... Read more
Xcode 6.4 - Integrated development envir...
Xcode provides everything developers need to create great applications for Mac, iPhone, and iPad. Xcode brings user interface design, coding, testing, and debugging into a united workflow. The Xcode... Read more
OS X Yosemite 10.10.4 - Apple's lat...
OS X Yosemite is Apple's newest operating system for Mac. An elegant design that feels entirely fresh, yet inherently familiar. The apps you use every day, enhanced with new features. And a... Read more
Dash 3.0.2 - Instant search and offline...
Dash is an API Documentation Browser and Code Snippet Manager. Dash helps you store snippets of code, as well as instantly search and browse documentation for almost any API you might use (for a full... Read more
FontExplorer X Pro 5.0 - Font management...
FontExplorer X Pro is optimized for professional use; it's the solution that gives you the power you need to manage all your fonts. Now you can more easily manage, activate and organize your... Read more

Heroki (Games)
Heroki 1.0 Device: iOS Universal Category: Games Price: $7.99, Version: 1.0 (iTunes) Description: CLEAR THE SKIES FOR A NEW HERO!The peaceful sky village of Levantia is in danger! The dastardly Dr. N. Forchin and his accomplice,... | Read more »
Hands-On With Raceline CC
Set for release soon, Rebellion’s motorbike racing game, Raceline CC certainly looks stylish. But how does it play? I got my hands on a preview build to answer exactly that. | Read more »
Siegefall - Tips, Tricks, and Strategies...
So, you fancy establishing a base and ruling the world again. Siegefall is a convenient place to do that, but how about some great tips and tricks on how best to go about it? Here are a few ideas on how to get ahead as a beginner to this medieval... | Read more »
The WWE Comes to Racing Rivals - Because...
Racing Rivals is a racing game that's all about, well, rivalry. And who knows rivalry better than WWE superstars (shhhh, that was rhetorical)? [Read more] | Read more »
Hey, Who Put Apple Music in My SoundHoun...
One of the App Store's popular music discovery sources - SoundHound - has already been updated to include Apple's own music discovery source - Apple Music. That was fast! [Read more] | Read more »
Arcane Legends has a New Expansion Calle...
Arcane Legends has been going strong since it debuted at the tail end of 2012. So well, in fact, that it's already up to its sixth expansion. [Read more] | Read more »
Vector 2 is Officially a Thing and it...
Vector is a pretty cool parkour-driven runner that's gotten a pretty decent following since it first came out - although personally I think more people could stand to show it some love. Anyway, Nekki has announced that a sequel isofficially on its... | Read more »
Get Ready to Trucksform and Roll Out (an...
It looks like NuOxygen is bringing the truck-transforming racer Trucksform (get it?) to iOS in a couple of weeks. Although really it's more of an auto-driver than a racer. But still, transforming trucks! [Read more] | Read more »
This Week at 148Apps:June 22-26, 2015
June's Summer Journey Continues With 148Apps How do you know what apps are worth your time and money? Just look to the review team at 148Apps. We sort through the chaos and find the apps you're looking for. The ones we love become Editor’s Choice,... | Read more »
LEGO® Minifigures Online (Games)
LEGO® Minifigures Online 1.0.1 Device: iOS iPhone Category: Games Price: $4.99, Version: 1.0.1 (iTunes) Description: | Read more »

Price Scanner via MacPrices.net

Logo Pop Free Vector Logo Design App For OS X...
128bit Technologies has released of Logo Pop Free 1.2 for Mac OS X, a vector based, full-fledged, logo design app available exclusively on the Mac App Store for the agreeable price of absolutely free... Read more
21-inch 1.4GHz iMac on sale for $999, save $1...
B&H Photo has new 21″ 1.4GHz iMac on sale for $999 including free shipping plus NY sales tax only. Their price is $100 off MSRP. Best Buy has the 21″ 1.4GHz iMac on sale for $999.99 on their... Read more
16GB iPad mini 3 on sale for $339, save $60
B&H Photo has the 16GB iPad mini 3 WiFi on sale for $339 including free shipping plus NY tax only. Their price is $60 off MSRP. Read more
Save up to $40 on iPad Air 2, NY tax only, fr...
B&H Photo has iPad Air 2s on sale for up to $40 off MSRP including free shipping plus NY sales tax only: - 16GB iPad Air 2 WiFi: $489 $10 off - 64GB iPad Air 2 WiFi: $559 $40 off - 128GB iPad Air... Read more
Apple Releases OS X 10.10.4 With WIFi Fix, iO...
On Tuesday, Apple released final versions of OS X 10.10.4 and iOS 8.4, as well as updates for the Safari browser for OS X Yosemite, Mavericks, and Mountain Lion. The OS X 10.10.4 update focuses on... Read more
Dual-Band High-Gain Antennas for Home Wi-Fi N...
Linksys has announced what it claims are the first dual-band, omni-directional high-gain antennas for the consumer market. The new Linksys high-gain antennas available in a 2- and 4-pack (WRT004ANT... Read more
Apple refurbished 2014 15-inch Retina MacBook...
The Apple Store has Apple Certified Refurbished 2014 15″ 2.2GHz Retina MacBook Pros available for $1609, $390 off original MSRP. Apple’s one-year warranty is included, and shipping is free. They have... Read more
Clearance 2014 MacBook Airs available for up...
Adorama has 2014 MacBook Airs on sale for up to $301 off original MSRP including NY + NJ sales tax and free shipping: - 11″ 256GB MacBook Air: $798 $301 off original MSRP - 13″ 128GB MacBook Air: $... Read more
5K iMacs on sale for $100 off MSRP, free ship...
B&H Photo has the new 27″ 3.3GHz 5K iMac on sale for $1899.99 including free shipping plus NY tax only. Their price is $100 off MSRP. They have the 27″ 3.5GHz 5K iMac on sale for $2199, also $100... Read more
27-inch 3.2GHz iMac on sale for $1679, save $...
B&H Photo has the 27″ 3.2GHz iMac on sale for $1679.99 including free shipping plus NY sales tax only. Their price is $120 off MSRP. Read more

Jobs Board

Senior Payments Security Manager - *Apple*...
**Job Summary** Apple , Inc. is looking for a highly motivated, innovative and hands-on senior payments security manager to join the Apple Pay security team. You will Read more
Project Manager - *Apple* Pay Security - Ap...
**Job Summary** The Apple Pay Security team is seeking a highly organized, results-driven Project Manager to drive the development of Apple Pay Security. If you are Read more
Web Developer, *Apple* Online Store Innovat...
**Job Summary** The Apple Online Store Innovation Lab team is seeking a talented individual with strong web development and design skills to prototype future Apple Read more
*Apple* TV Live Streaming Frameworks Test En...
**Job Summary** Work and contribute towards the engineering of Apple 's state-of-the-art products involving video, audio, and graphics in Interactive Media Group (IMG) at Read more
Project Manager, WW *Apple* Fulfillment Ope...
…a senior project manager / business analyst to work within our Worldwide Apple Fulfillment Operations and the Business Process Re-engineering team. This role will work Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.