macOS Pre-defined Graphics Formats

[Senor Cuete]

I use an object to convert NSViews to NSImages like this

- (NSImage *) imageForView: (NSView *)aView{
    NSImage *image = [[[NSImage alloc] initWithData: [self PDFForView: aView]] autorelease];
    return image;
}

Then these can be converted to various file types like this:

- (NSData*) representationForFileType: (NSImage*) image fileType: (NSBitmapImageFileType) fileType 
{
    NSData *temp = [image TIFFRepresentation];
    NSBitmapImageRep *bitmap = [NSBitmapImageRep imageRepWithData: temp];
    NSData *imgData = [bitmap representationUsingType: fileType properties: @{}];
    return imgData;
}

Also you can convert an image to PDF like this:

dataForPboardType:image fileType: NSPasteboardTypePDF];

and to a CIImage like this

CIImage * cimg = [CIImage imageWithData: [image TIFFRepresentation]];

NSBitmapImageFileType is an enumerated type with the following constants:
NSBitmapImageFileTypeTIFF
NSBitmapImageFileTypeBMP
NSBitmapImageFileTypeGIF
NSBitmapImageFileTypeJPEG
NSBitmapImageFileTypePNG
NSBitmapImageFileTypeJPEG2000

Are any other image file types defined in Mac OS?

 

[f54da]

Private NSCoreUIImageRep?

 

[Senor Cuete]

My Mac OS project won't build with this constant and searching the developer documentation yields no results so I'm guessing that this isn't in Mac OS.

 

[f54da]

It's a private symbol. You asked for other graphics formats, and this is one of them. It's the format returned when you do "NSImage imageNamed". It's not a NSBitmapImageRep so you can't really do much with it. You can even create one from a cgimage if you want, but I'm not sure why you'd want to.

@interface NSCoreUIImageRep : NSImageRep {
    struct __CFDictionary { } * _coreUIImageOptions;
    NSAppearance * _preferredAppearance;
}

@property (atomic, readwrite, retain) NSAppearance *preferredAppearance;

+ (id)imageRepWithCGImage:(struct CGImage { }*)arg1;
+ (id)imageRepWithCGLayer:(struct CGLayer { }*)arg1;
+ (id)imageRepWithCocoaName:(id)arg1;

- (BOOL)_drawOnlyUsesOneDrawingOperation;
- (BOOL)_isValid;
- (BOOL)_wantsToBeCached;
- (void)addEffects:(id)arg1;
- (struct CGRect { struct CGPoint { double x_1_1_1; double x_1_1_2; } x1; struct CGSize { double x_2_1_1; double x_2_1_2; } x2; })boundingRectWithExtraEffects:(id)arg1;
- (struct CGRect { struct CGPoint { double x_1_1_1; double x_1_1_2; } x1; struct CGSize { double x_2_1_1; double x_2_1_2; } x2; })boundingRectWithExtraEffectsForState:(unsigned long long)arg1 backgroundStyle:(int)arg2 context:(id)arg3;
- (id)copyWithZone:(struct _NSZone { }*)arg1;
- (struct __CFDictionary { }*)coreUIDrawOptions;
- (void)dealloc;
- (id)description;
- (BOOL)draw;
- (void)encodeWithCoder:(id)arg1;
- (BOOL)hasEffects;
- (id)initWithCGImage:(struct CGImage { }*)arg1;
- (id)initWithCGLayer:(struct CGLayer { }*)arg1;
- (id)initWithCocoaName:(id)arg1;
- (id)initWithCoder:(id)arg1;
- (id)initWithCoreUIDrawOptions:(struct __CFDictionary { }*)arg1 size:(struct CGSize { double x1; double x2; })arg2;
- (BOOL)isTemplate;
- (id)preferredAppearance;
- (void)setBackgroundStyle:(int)arg1;
- (void)setPreferredAppearance:(id)arg1;
- (void)setState:(unsigned long long)arg1;
- (void)setSuppressesCache:(BOOL)arg1;
- (void)setTemplate:(BOOL)arg1;
- (unsigned long long)state;
- (BOOL)suppressesCache;

@end

 

[Senor Cuete]

That's interesting. It lt looks like a subclass of NSImage with a bunch of stuff that you wouldn't use. Maybe the OS uses it. Also according to the developer documentation and also in my code [NSImage imageNamed] returns an NSImage that's in the app bundle.

 

[f54da]

Not necessarily in the app bundle, it's also used for prebaked appkit sprites, like up arrow, right arrow, etc.