TweetFollow Us on Twitter

Color Capable
Volume Number:3
Issue Number:7
Column Tag:Macintosh II

Lazy Man's Color

By Steven Sheets, Hoffman Estates, IL

Newsbreak....Cupertino, Calif.....Color is here!

The new Macintosh // computer has color capabilities. Most color video cards will allow up to 256 specific colors out of a possible color palatte of 16,777,216 selections. A new Color Quickdraw has been designed with Color Tables, Pixel Maps, Pixel Patterns, Color Icons, Color Grafports and Color Picture Handles to work with the new machine. Three new Managers have been added to facilitate color; the Color Manager, the Color Picker Package and the Palette Manager.

Are you ready to program with this new Color Quickdraw?

Before you answer that, did you know there was an alternative way to display color on the Mac? Use the old Quickdraw color routine! You didn’t know the older Quickdraw had color? Well...

Old Color

The original Macintosh displays were in black & white. 21,888 bytes of memory were used to display the normal 512 by 342 pixel screen (1 bit per pixel). However, the original Quickdraw had the capability to draw in color. In the original Grafport record, there were 2 fields (fgColor and bkColor) that determined the settings of the Foreground and Background color.

Quickdraw predefined 8 colors (Black, White, Red, Green, Blue, Cyan, Magenta and Yellow). Each color had a long integer constant associated with it. By passing these constants to the procedures ForeColor and BackColor, the respective fields of the current Grafport were changed. When any Grafport was created, the default settings for the Foreground and Background were Black and White respectively.

Color fields were treated similar to the more often used Pen Pattern (pnPat) and Background Pattern (bkPat). Any drawing by the Pen was done in the Foreground color, any Erasing was done in the Background color. Also Foreground and Background color affect the Copybits call. When copying a bitmap onto a Grafport, any bit that was set in the source Bitmap would make the corresponding pixel appear in the Foreground color on the Grafport. Any unset bit would make the pixel appear in the Background color.

However on the black and white Macintosh, any color other than white appears as black. Thus drawing Red on White, Blue on White, or even Yellow on White has the same effect on the Pre-Mac // computers; Black on White. Interestingly the Imagewriter // printer driver does use the color commands, thus making the Imagewriter // with a color ribbon the first color Macintosh output device of any type. While the new Mac // also has the new Color Quickdraw commands, it also supports the old commands, including the use of Foreground and Background color.

Fig. 1 Our program uses classic color options

Why Use Old?

There are several reasons for not wanting to use Color Quickdraw for your first color program. It might prove simpler, until you get a handle on Color Quickdraw (and the three associated managers), to use the older Quickdraw routines. Color Quickdraw involves new conceptional models, new data structures, and new routines. While it is well worth the effort to learn (the graphic effects are stunning), there is a stiff learning curve.

The Color Quickdraw manual is even larger than the original Quickdraw manual. That is assuming that you have the new documentation. Inside Macintosh Vol. V is due out soon, but unless you currently have a beta version, you will have to wait for APDA’s final release.

Even if you have the new documentation and routines, your development system may not implement the new ROM calls. Lightspeed C, Lightspeed Pascal, MDS do not support the new Quickdraw, while MPW has to be updated to version 2.0. Many programmers will have to wait until the developers of their programming language come out with a new update until they can use the new routines. Some lucky users can input all the new calls themselves and do not need the updates. That means typing in dozens of new calls and data structures (again assuming they have the documentation). Lucky them! [Apple is still working on the equates file and rumor has it the Pallette Manager is still changing. -Ed]

Finally there is the actual code size and time in involved programming the new Quickdraw. Color Quickdraw does take more code to implement and it’s data structures are larger. The simple ForeColor and BackColor routines take very little code space.

Certainly Color Quickdraw should be used if someone is writing a color Drawing program for the Mac //. But if you only wish to add color to your existing programs, using Color Quickdraw requires you to rewrite your code, redo your graphics and in some cases, even redo your complicated bitmaps. Placing ForeColor and BackColor calls before your existing code segments is much simpler. If your Program is intended to run on any Macintosh, the older Quickdraw may be all you need or want to produce color.

The Code

The source example is an extremely simple, standard Macintosh program. It loads and displays any MacPaint document in any of the eight Foreground and eight Background colors. A few notes:

1) The CWindow (which will display the MacPaint document) is centered on large screens (like a SuperMac monitor) or placed in the offset position.

2) The actual picture is stored in two sets of Bitmaps and Data handles. Data is stored this way since the size of a MacPaint bitmap is too large to store in 1 set (32K limit). If there is not enough memory to create the bitmaps, the program will state this and not allow a MacPaint document to be loaded

3) ForeC and BackC store the selected menu number (1-8), not the predefined Color constant. GetColor is used to convert the menu number into the color constant.

4) DoColor is the pivotal procedure; it sets the new Foreground/Background colors. Then it causes an window update so the window is redrawn in the new colors.

{Lazy Man’s Color by Steve Sheets 4/20/87 }
{Simple Demonstration of Mac // Color using the 
{ForeColor & BackColor of classical Quickdraw. }
{This program Loads and displays a MacPaint document }
(in any 2 colors.}


{Various Constants:Menu ID Numbers, Window Size, }
{Window Placement, BitMap Size and Number of Colors. }
 AppleMenuID = 300;
 FileMenuID = 301;
 EditMenuID = 302;
 ForeMenuID = 303;
 BackMenuID = 304;

 OffV = 40;
 OffH = 40;
 AboutH = 300;
 AboutV = 140;
 SizeH = 576;
 SizeV1 = 360;
 SizeV2 = 720;
 BitW = 72;
 NumSec = 2;

 XColor = 8;

{Various Variables:Menus, Bitmaps, Window, Colors, }
{Done Flag & Title Name }
 Done : boolean;
 AppleMenu, FileMenu: EditMenu, 
 ForeMenu, BackMenu : MenuHandle;

 CWindow : windowptr;
 CMap : ARRAY[1..NumSec] OF bitmap;
 CData : ARRAY[1..NumSec] OF handle;

 ForeC, BackC : integer;
 Title : str255;

{Given Color Number ( 1 to XColor, as selected by Menu), }
{returns actual longint Color Number (for ForeColor or }
{BackColor). }
FUNCTION GetColor (N : integer) : longint;
 1 : 
 GetColor := BlackColor;
 2 : 
 GetColor := WhiteColor;
 3 : 
 GetColor := RedColor;
 4 : 
 GetColor := GreenColor;
 5 : 
 GetColor := BlueColor;
 6 : 
 GetColor := CyanColor;
 7 : 
 GetColor := MagentaColor;
 8 : 
 GetColor := YellowColor;
 GetColor := WhiteColor;

{Sets new ForeColor & BackColor and forces an Update} 
{so Window is redrawn in the new colors. }
PROCEDURE DoColor (F, B : integer);
 count : integer;
 tempPort : Grafptr;
 IF F <> ForeC THEN
 FOR count := 1 TO XColor DO
 CheckItem(ForeMenu, count, count = F);
 ForeC := F;
 IF B <> BackC THEN
 FOR count := 1 TO XColor DO
 CheckItem(BackMenu, count, count = B);
 BackC := B;

{ Loads MacPaint Picture in Bitmaps and displays it.}
 diskBlock = PACKED ARRAY[1..512] OF QDbyte;
 MyReply : SFReply;
 MyType : SFtypelist;
 tempPoint : point;
 count : longint;
 refNum, scanline, N : integer;
 error : OSErr;
 srcBuf : ARRAY[1..2] OF diskBlock;
 srcPtr, dstPtr : Ptr;
 tempPoint.v := 60;
 tempPoint.h := 60;
 MyType[0] := ‘PNTG’;
 SFGetFile(tempPoint, ‘’, NIL, 1, MyType, NIL, MyReply);
 IF MyReply.good THEN
 IF FSOpen(MyReply.fname, MyReply.vrefnum, refNum) = noErr THEN
 count := 512;
 error := FSRead(refNum, count, @srcBuf);
 count := 1024;
 error := FSRead(refNum, count, @srcBuf);
 srcPtr := @srcBuf;
 FOR N := 1 TO NumSec DO
 dstPtr := CData[N]^;
 FOR scanline := 1 TO SizeV1 DO
 UnpackBits(srcPtr, dstPtr, BitW);
 IF ord(srcPtr) > (ord(@srcBuf) + 512) THEN
 srcBuf[1] := srcBuf[2];
 count := 512;
 error := FSRead(refNum, count, @srcBuf[2]);
 srcPtr := pointer(ord(srcPtr) - 512);
 error := FSClose(refNum);
 DoColor(ForeC, BackC);

{Creates a Rectangle centered on Screen (if window }
{size is smaller then the screen) or starting at a }
{standard offset (if window size is larger then }
{screen). }
PROCEDURE CenterRect (VAR R : rect;
 H, V : integer);
 tempH : integer;
 IF H > Screenbits.bounds.right THEN
 tempH := OffH
 tempH := ((Screenbits.bounds.right - H) DIV 2);
 SetRect(R, tempH, OffV, H + tempH, V + OffV);

{Draws text, centered in a rectangle in the About}
{  Box window in a certain color with a certain }
{justification }
PROCEDURE DoLine (S : str255;
 H, Top, Bottom, J : integer;
 C : longint);
 tempInteger : integer;
 tempRect : rect;
 tempInteger := ((AboutH - H) DIV 2);
 SetRect(tempRect, tempInteger, Top, tempInteger + H, Bottom);
 TextBox(POINTER(ord(@S) + 1), LENGTH(S), tempRect, J);

{Displays About Box (in color) until someone presses } 
{the button down.}
 tempWindow : windowptr;
 tempRect : rect;
 tempStr : str255;
 CenterRect(tempRect, AboutH, AboutV);
 tempWindow := NewWindow(NIL, tempRect, ‘’, true, dBoxProc, POINTER(-1), 
false, 0);

 DoLine(CONCAT(Title, ‘ by Steve Sheets’), AboutH, 20, 39, teJustCenter, 
 DoLine(‘Sample Mac // Color Program’, AboutH, 40, 59, teJustCenter, 
 DoLine(‘This program uses the ForeColor and BackColor Quickdraw commands 
to display a MacPaint document in two colors.’, AboutH - 50, 60, AboutV, 
teJustLeft, RedColor);

 WHILE NOT button DO

{Standard main menu procedure that handles }
{menu selections.  Can show About Box, open Desk }
{Accessories, Load in MacPaint file, change }
{the Done Flag (so the program quits), handle} 
{edit commands (Cut,Copy,Paste,Clear), and change }
{Foreground or Background color of the picture.}
PROCEDURE MainMenu (tempResult : LONGINT);
 tempInteger : integer;
 tempBoolean : boolean;
 tempStr : STR255;
 tempInteger := LoWord(tempResult);
 CASE HiWord(tempResult) OF
 AppleMenuID : 
 IF tempInteger = 1 THEN
 GetItem(appleMenu, tempInteger, tempStr);
 tempInteger := OpenDeskAcc(tempStr);
 FileMenuID : 
 CASE tempInteger OF
 1 : 
 3 : 
 Done := true;
 EditMenuID : 
 tempBoolean := SystemEdit(tempInteger - 1);
 ForeMenuID : 
 IF (tempInteger > 0) AND (tempInteger <= XColor) THEN
 DoColor(tempInteger, BackC);
 BackMenuID : 
 IF (tempInteger > 0) AND (tempInteger <= XColor) THEN
 DoColor(ForeC, tempInteger);

{Setup for Menus, Window, Bitmaps,  Colors }
{settings, Title and Done flag.  }
 DD = PACKED ARRAY[1..32000] OF 0..255;
 PP = ^DD;
 HH = ^PP;
 tempStr : STR255;
 tempRect : rect;
 count : integer;
 tempLong : longint;
 tempH : HH;
 Title := ‘Lazy Man@s Color’;
 Title[9] := CHR(39);

 tempStr := ‘ ‘;
 tempStr[1] := CHR(appleMark);
 AppleMenu := NewMenu(AppleMenuID, tempStr);
 AppendMenu(AppleMenu, CONCAT(‘About ‘, Title, ‘...;(-’));
 AddResMenu(AppleMenu, ‘DRVR’);

 FileMenu := NewMenu(FileMenuID, ‘File’);
 AppendMenu(FileMenu, ‘Load MacPaint Documents/L;(-;Quit/Q’);

 EditMenu := NewMenu(EditMenuID, ‘Edit’);
 AppendMenu(EditMenu, ‘Undo/Z;(-;Cut/X;Copy/C; Paste/V;Clear’);

 ForeMenu := NewMenu(ForeMenuID, ‘Set Foreground’);
 AppendMenu(ForeMenu, ‘Black;White;Red;Green;Blue; Cyan;Magenta;Yellow’);

 BackMenu := NewMenu(BackMenuID, ‘Set Background’);
 AppendMenu(BackMenu, ‘Black;White;Red;Green;Blue;Cyan; Magenta;Yellow’);

 InsertMenu(AppleMenu, 0);
 InsertMenu(FileMenu, 0);
 InsertMenu(EditMenu, 0);
 InsertMenu(ForeMenu, 0);
 InsertMenu(BackMenu, 0);


 CenterRect(tempRect, SizeH, SizeV2);
 CWindow := NewWindow(NIL, tempRect, Title, true, 4, POINTER(-1), false, 

 CMap[1].rowBytes := BitW;
 SetRect(CMap[1].bounds, 0, 0, SizeH, SizeV1);
 CData[1] := NewHandle(BitW * SizeV1);
 IF CData[1] <> NIL THEN
 tempH := HH(CData[1]);
 FOR count := 1 TO BitW * SizeV1 DO
 tempH^^[count] := 0;
 CMap[2].rowBytes := BitW;
 SetRect(CMap[2].bounds, 0, SizeV1, SizeH, SizeV2);
 CData[2] := NewHandle(BitW * SizeV1);
 IF CData[2] <> NIL THEN
 tempH := HH(CData[2]);
 FOR count := 1 TO BitW * SizeV1 DO
 tempH^^[count] := 0;
 IF (CData[1] = NIL) OR (CData[2] = NIL) THEN
 SetWTitle(CWindow, ‘Not Enough Memmory’);
 DisableItem(FileMenu, 1);
 ForeC := 0;
 BackC := 0;
 DoColor(1, 2);
 Done := false;

{Standard main program loop that handles all }
{events (ie. mouse down, key downs & updates) until }
{the Done flag is set.  }
 tempEvent : EventRecord;
 tempWindow : windowptr;
 tempCode : integer;
 tempPort : Grafptr;
 tempRect : rect;
 IF GetNextEvent(everyEvent, tempEvent) THEN
 CASE tempEvent.what OF
 mouseDown : 
 tempCode := FindWindow(tempEvent.where, tempWindow);
 CASE tempCode OF
 inDrag, inContent : 
 IF tempWindow <> FrontWindow THEN
 IF Cwindow = tempWindow THEN
 IF CWindow <> FrontWindow THEN
 SetRect(tempRect, -25000, -25000, 25000, 25000);
 DragWindow(CWindow, tempEvent.where, tempRect);
 inMenuBar : 
 inSysWindow : 
 SystemClick(tempEvent, tempWindow);
 END; { of tempCode case }
 END; { of mouseDown }
 keydown, autoKey : 
 IF BitAnd(tempEvent.modifiers, cmdKey) <> 0 THEN
 MainMenu(MenuKey(CHR(tempEvent.message MOD 256)));
 updateEvt : 
 IF CWindow = WindowPtr(tempEvent.message) THEN
 IF CData[1] <> NIL THEN
 CMap[1].baseAddr := CData[1]^;
 CopyBits(CMap[1], CWindow^.portBits, CMap[1].bounds, CMap[1].bounds, 
srcCopy, NIL);
 IF CData[2] <> NIL THEN
 CMap[2].baseAddr := CData[2]^;
 CopyBits(CMap[2], CWindow^.portBits, CMap[2].bounds, CMap[2].bounds, 
srcCopy, NIL);
 UNTIL Done;

{***PROGRAM*** }

Community Search:
MacTech Search:

Software Updates via MacUpdate

Facility 47 (Games)
Facility 47 1.0.1 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0.1 (iTunes) Description: You wake up alone and freezing in an icy cell. You try the cell door but it’s locked, it seems that you are stuck with no... | Read more »
The best Photoshop alternative on iPad
Instagram and Lightroom are great and all, but sometimes people need to get extra creative with their image editing.Like, Photoshop creative. If you're one of these people, take a look at our pick for the best mobile Photoshop experience on iPad... | Read more »
The Walking Dead: No Man’s Land guide -...
A new update for The Walking Dead: No Man’s Land was released last week, making it the perfect time for you to head back to your base and take out some walkers. Here’s the lowdown on what’s new to the game, and how to take advantage. [Read more] | Read more »
Goat Rider guide - Tips and tricks to st...
We've all been there. One second, we're riding high on a crazed goat, and the next, we've been tossed off it like someone who's no good at goat ridin'. [Read more] | Read more »
Real Boxing 2 CREED: How to become a gre...
Just in time for Rocky fans who can’t wait to see CREED, the latest movie, we have the official tie-in game,Real Boxing 2 CREED. It builds on the success of its predecessor and there’s lots to take in so we at 148apps thought we’d run you through... | Read more »
CoinOp Heroes 2 guide - How to build an...
CoinOp Heroes 2 justlaunched and, like all clickers, it's dangerously addictive stuff. You have to furiously tap your screen to defeat wave after wave of foes and earn an insane amount of cash to spend on character upgrades and an army of minions... | Read more »
Dr. Panda Firefighters (Education)
Dr. Panda Firefighters 1.0.1 Device: iOS Universal Category: Education Price: $2.99, Version: 1.0.1 (iTunes) Description: FIGHT FIRES AND SAVE THE DAY!Work together with Dr. Panda and his firefighting team to rescue his trapped... | Read more »
Puddle + (Games)
Puddle + 1.0 Device: iOS iPhone Category: Games Price: $2.99, Version: 1.0 (iTunes) Description: Puddle is back in a new "+" edition featuring enhanced graphics, new videos and Apple TV support ! No IAP and No Ads. Dive into Puddle... | Read more »
Football Manager Mobile 2016 (Games)
Football Manager Mobile 2016 7.0.0 Device: iOS Universal Category: Games Price: $8.99, Version: 7.0.0 (iTunes) Description: Football Manager Mobile 2016 is designed to be played on the move and is the quickest way to manage your... | Read more »
Kill Shot Bravo guide - How to become an...
Kill Shot Bravo is a disturbing amount of fun. No matter how many times I play a game that encourages me to snipe people in the head, I feel a little uneasy at how satisfying it is. Here are some useful tips to get you started on your path to... | Read more »

Price Scanner via

Adorama Black Friday deals: Up to $400 off Ma...
Adorama has released their Black Friday deals for 2015. Save up to $400 on MacBook Pros, $200 on MacBooks and MacBook Airs, and $270 on iMacs. Use code RYBFDEAL during checkout to see these prices.... Read more
B&H Photo Deals: $200 off 12-inch 1.2GHz...
In addition to the B&H Photo Black Friday week sales we posted yesterday, B&H has lowered their price on two products to $200 off MSRP: - 12″ 1.2GHz Gray Retina MacBook: $1399 save $200 - 13... Read more
Best Buy Early Access: Today only, Up to $125...
Best Buy has iPad Air 2s on sale for up to $125 off MSRP and Apple Watch models on sale on their online store for up to $100 off MSRP with special codes through midnight CT tonight. Choose free... Read more
UPPERCASE DESIGNS Premium Ultra Thin Keyboard...
UPPERCASE Designs today announced its new Premium Ultra Thin Keyboard Protector and its Palm Rest Protector Set for the 12-inch MacBook. The accessories provide durable protection for the 12-inch... Read more
Al Jazeera Launches New iOS And Android Mobil...
Doha, Qatar based Al Jazeera has launched new mobile and tablet apps on the iOS and Android systems bringing the latest Al Jazeera news and programmes live together with on-demand personalisation.... Read more
B&H Photo Holiday Sale: Up to $250 off Ma...
B&H Photo has all new Macs on sale for up to $500 off MSRP as part of their Holiday sale including free shipping plus NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799 $200 off - 15″ 2.... Read more
Free Aura ‘Ultimate’ Mac App For Gmail Update...
Miami, Florida based Crosscoded has announced Aura 1.2.0, an update to the Mac app for Gmail. Aura mixes the power of a native client with the flexibility of the Gmail web app with support for up to... Read more
Apple Will Edge Closer to Samsung in Smartpho...
Total smartphone shipments for 2015 are projected to decline by 9.7% to 1.286 billion units, according to the latest report from global market research firm TrendForce. Though Chinese vendors have... Read more
Sidefari – Split Screen Multitasking In Safar...
Francisco Cantu’s Sidefari is a simple web browser designed to act as a companion to Safari on the iPad. With multitasking in iOS 9, Sidefari uses the new Safari View Controller to show an extra... Read more
12-inch MacBooks in stock for up to $120 off,...
Adorama has 12″ Retina MacBooks in stock for up to $120 off MSRP including free shipping plus NY & NJ sales tax only. For a limited time, Adorama will include a free Apple USB-C to USB Adapter,... Read more

Jobs Board

Merchant Operations Manager: *Apple* Pay -...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more than Read more
*Apple* Pay QA Manager - Apple Inc. (United...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more than Read more
Sr Software Engineer *Apple* Pay - Apple In...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more than Read more
Hardware Systems Architect - *Apple* Watch...
# Hardware Systems Architect - Apple Watch Job Number: 38449977 Santa Clara Valley, Califo ia, United States Posted: Apr. 16, 2015 Weekly Hours: **Job Summary** The Read more
Software Engineer, *Apple* Watch - Apple (U...
# Software Engineer, Apple Watch Job Number: 38181776 Santa Clara Valley, Califo ia, United States Posted: Nov. 2, 2015 Weekly Hours: 40.00 **Job Summary** The Apple Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.