Classic Macintosh Bitmap Typography
This is a small set of Objective-C classes that can be used for parsing font data from the original Macintosh,
and for simple rendering of bitmap text using those fonts. Rendered specimens of the full character sets of several of the original Macintosh fonts can be found in the
specimens folder in this project.
This work formed the basis of the article here.
BitmapFont class does the parsing into a usable object, and
SimpleBitmapRenderer can use that to put some text on a canvas. In order to use this, you'll need to have original Mac
FONT resource data, which is not currently included in this project.
NB: This code is reasonably durable but was create to facilitate an academic exercise. It was not designed or written with performance or security concerns in mind, and if you want to use it for anything other than hacking on, please revise it accordingly.
// Load FONT resource containing Chicago: NSData * data = [NSData dataWithContentsOfFile:@"00012"]; BitmapFont * font = [BitmapFont fontFromResourceData:data withResourceIdString:@"00012"]; // Create a renderer SimpleBitmapRenderer * renderer = [[SimpleBitmapRenderer alloc] initWithSize:UIntSizeMake(300, 200)]; renderer.currentFont = font; // Write some text NSString * text = @"Hello."; [renderer renderString:text.macRomanString atOrigin:UIntPointMake(20, 20)]; // Get a PNG out of it NSData * pngData = [renderer bitmapImageAsPNGDataWithScale:15 showingGrid:YES];
Here's the complete specimen for Susan Kare's San Francisco typeface: