multiple character generators.
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5b8c8fec17
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@ -8,6 +8,12 @@
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#import <Cocoa/Cocoa.h>
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#import <Cocoa/Cocoa.h>
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enum {
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CGApple80,
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CGApple40,
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CGVT52,
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CGVT100
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};
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@interface CharacterGenerator : NSObject
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@interface CharacterGenerator : NSObject
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{
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{
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@ -17,6 +23,9 @@
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}
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}
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+(CharacterGenerator *)generator;
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+(CharacterGenerator *)generator;
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+(CharacterGenerator *)generatorForCharacterSet: (unsigned)characterSet;
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@property (nonatomic, readonly) NSSize characterSize;
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@property (nonatomic, readonly) NSSize characterSize;
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@ -12,6 +12,7 @@
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@interface CharacterGenerator ()
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@interface CharacterGenerator ()
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-(void)loadImageNamed: (NSString *)imageName;
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-(void)loadImageNamed: (NSString *)imageName;
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-(id)initWithImageNamed: (NSString *)imageName;
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@end
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@end
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@implementation CharacterGenerator
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@implementation CharacterGenerator
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@ -38,27 +39,45 @@ static CGImageRef PNGImage(NSString *path)
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}
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}
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#endif
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#endif
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+(id)generator
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{
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+(CharacterGenerator *)generatorForCharacterSet: (unsigned)characterSet {
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static CharacterGenerator *singleton = nil;
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static CharacterGenerator *singletons[4] = {};
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static NSString *names[] = {
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@"a2-charset-80",
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@"a2-charset-40",
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@"vt52-charset",
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@"vt100-charset",
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};
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constexpr unsigned MaxCharSet = sizeof(names) / sizeof(names[0]);
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static dispatch_once_t onceToken;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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dispatch_once(&onceToken, ^{
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singleton = [[CharacterGenerator alloc] init];
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for (unsigned i = 0; i < MaxCharSet; ++i)
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singletons[i] = [[CharacterGenerator alloc] initWithImageNamed: names[i]];
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});
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});
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return singleton;
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if (characterSet >= MaxCharSet) return nil;
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return singletons[characterSet];
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}
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}
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-(id)init
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+(id)generator
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{
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{
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return [self generatorForCharacterSet: CGApple80];
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}
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-(id)initWithImageNamed: (NSString *)imageName {
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if ((self = [super init]))
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if ((self = [super init]))
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{
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{
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[self loadImageNamed: @"a2-charset-80"];
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[self loadImageNamed: imageName];
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}
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}
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return self;
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return self;
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}
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}
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/*
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/*
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* This loads the image then split it up into 256 images.
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* This loads the image then split it up into 256 images.
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*
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*
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