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# NSImage

### Authors

Adam Fedor (`fedor@colorado.edu`)

> Load, manipulate and display images

Copyright: (C) 1996, 2005 Free Software Foundation, Inc.

### Contents -

1. Software documentation for the NSImage class
2. Software documentation for the NSBundle(NSImageAdditions) category
3. Software documentation for the GSImageDelegateProtocol protocol

# Software documentation for the NSImage class

## NSImage : NSObject

> Declared in:
>   AppKit/NSImage.h

> Conforms to:
>   NSCoding
>   NSCopying

Availability: OpenStep
Description forthcoming.

Instance Variables
Method summary

- +_standardImageWithName:
- +canInitWithPasteboard:
- +imageFileTypes
- +imageNamed:
- +imagePasteboardTypes
- +imageUnfilteredFileTypes
- +imageUnfilteredPasteboardTypes
- -TIFFRepresentation
- -TIFFRepresentationUsingCompression:factor:
- -addRepresentation:
- -addRepresentations:
- -backgroundColor
- -bestRepresentationForDevice:
- -cacheDepthMatchesImageDepth
- -cacheMode
- -compositeToPoint:fromRect:operation:
- -compositeToPoint:fromRect:operation:fraction:
- -compositeToPoint:operation:
- -compositeToPoint:operation:fraction:
- -delegate
- -dissolveToPoint:fraction:
- -dissolveToPoint:fromRect:fraction:
- -drawAtPoint:fromRect:operation:fraction:
- -drawInRect:fromRect:operation:fraction:
- -drawRepresentation:inRect:
- -initByReferencingFile:
- -initWithBitmapHandle:
- -initWithContentsOfFile:
- -initWithContentsOfURL:
- -initWithData:
- -initWithIconHandle:
- -initWithPasteboard:
- -initWithSize:
- -isCachedSeparately
- -isDataRetained
- -isFlipped
- -isValid
- -lockFocus
- -lockFocusOnRepresentation:
- -matchesOnMultipleResolution
- -name
- -prefersColorMatch
- -recache
- -removeRepresentation:
- -representations
- -scalesWhenResized
- -setBackgroundColor:
- -setCacheDepthMatchesImageDepth:
- -setCacheMode:
- -setCachedSeparately:
- -setDataRetained:
- -setDelegate:
- -setFlipped:
- -setMatchesOnMultipleResolution:
- -setName:
- -setPrefersColorMatch:
- -setScalesWhenResized:
- -setSize:
- -setUsesEPSOnResolutionMismatch:
- -size
- -unlockFocus
- -usesEPSOnResolutionMismatch

### _standardImageWithName:

+ (NSImage*) _standardImageWithName: (NSString*)name;
Availability: Gui 0.0.0
Warning the underscore at the start of the name of this method indicates that it is private, for internal use only, and you should not use the method in your code.

### canInitWithPasteboard:

+ (BOOL) canInitWithPasteboard: (NSPasteboard*)pasteboard;
Availability: OpenStep
Description forthcoming.

### imageFileTypes

+ (NSArray*) imageFileTypes;
Availability: OpenStep
Description forthcoming.

### imageNamed:

+ (id) imageNamed: (NSString*)aName;
Availability: OpenStep

Returns the NSImage named aName. The search is done in the main bundle first and then in the usual images directories

### imagePasteboardTypes

+ (NSArray*) imagePasteboardTypes;
Availability: OpenStep
Description forthcoming.

### imageUnfilteredFileTypes

+ (NSArray*) imageUnfilteredFileTypes;
Availability: OpenStep
Description forthcoming.

### imageUnfilteredPasteboardTypes

+ (NSArray*) imageUnfilteredPasteboardTypes;
Availability: OpenStep
Description forthcoming.

### TIFFRepresentation

- (NSData*) TIFFRepresentation;
Availability: OpenStep
Description forthcoming.

### TIFFRepresentationUsingCompression: factor:

- (NSData*) TIFFRepresentationUsingCompression: (NSTIFFCompression)comp factor: (float)aFloat;
Availability: OpenStep
Description forthcoming.

### addRepresentation:

- (void) addRepresentation: (NSImageRep*)imageRep;
Availability: OpenStep

Adds the NSImageRep imageRep to the NSImage's representations array.

See Also: -addRepresentations: removeRepresentation:

### addRepresentations:

- (void) addRepresentations: (NSArray*)imageRepArray;
Availability: OpenStep

Adds the NSImageRep array imageRepArray to the NSImage's representations array.

See Also: -addRepresentation: -removeRepresentation:

### backgroundColor

- (NSColor*) backgroundColor;
Availability: OpenStep

Returns the color of the NSImage's background

See Also: -setBackgroundColor:

### bestRepresentationForDevice:

- (NSImageRep*) bestRepresentationForDevice: (NSDictionary*)deviceDescription;
Availability: OpenStep
Description forthcoming.

### cacheDepthMatchesImageDepth

- (BOOL) cacheDepthMatchesImageDepth;
Availability: OpenStep
Description forthcoming.

### cacheMode

- (NSImageCacheMode) cacheMode;
Availability: OpenStep
Description forthcoming.

### compositeToPoint: fromRect: operation:

- (void) compositeToPoint: (NSPoint)aPoint fromRect: (NSRect)aRect operation: (NSCompositingOperation)op;
Availability: OpenStep
Description forthcoming.

### compositeToPoint: fromRect: operation: fraction:

- (void) compositeToPoint: (NSPoint)aPoint fromRect: (NSRect)aRect operation: (NSCompositingOperation)op fraction: (float)delta;
Availability: MacOS-X 10.0.0
Description forthcoming.

### compositeToPoint: operation:

- (void) compositeToPoint: (NSPoint)aPoint operation: (NSCompositingOperation)op;
Availability: OpenStep
Description forthcoming.

### compositeToPoint: operation: fraction:

- (void) compositeToPoint: (NSPoint)aPoint operation: (NSCompositingOperation)op fraction: (float)delta;
Availability: MacOS-X 10.0.0
Description forthcoming.

### delegate

- (id) delegate;
Availability: OpenStep
Description forthcoming.

### dissolveToPoint: fraction:

- (void) dissolveToPoint: (NSPoint)aPoint fraction: (float)aFloat;
Availability: OpenStep
Description forthcoming.

### dissolveToPoint: fromRect: fraction:

- (void) dissolveToPoint: (NSPoint)aPoint fromRect: (NSRect)aRect fraction: (float)aFloat;
Availability: OpenStep
Description forthcoming.

### drawAtPoint: fromRect: operation: fraction:

- (void) drawAtPoint: (NSPoint)point fromRect: (NSRect)srcRect operation: (NSCompositingOperation)op fraction: (float)delta;
Availability: MacOS-X 10.0.0
Calls -drawAtPoint:fromRect:operation:fraction: with `dstRect` given by `point` and the size of `srcRect`.

### drawInRect: fromRect: operation: fraction:

- (void) drawInRect: (NSRect)dstRect fromRect: (NSRect)srcRect operation: (NSCompositingOperation)op fraction: (float)fraction;
Availability: MacOS-X 10.0.0

Takes the part of the receiver given by `srcRect` and draws it in `dstRect` in the current coordinate system, transforming the image as necessary.

The image is drawn as if it was drawn to a cleared window, then dissolved using the fraction `delta` to another cleared window, and finally composited using `op` to the destination.

Note that compositing and dissolving doesn't work on all devices (printers, in particular).

### drawRepresentation: inRect:

- (BOOL) drawRepresentation: (NSImageRep*)imageRep inRect: (NSRect)aRect;
Availability: OpenStep
Description forthcoming.

### initByReferencingFile:

- (id) initByReferencingFile: (NSString*)fileName;
Availability: OpenStep
Description forthcoming.

### initWithBitmapHandle:

- (id) initWithBitmapHandle: (void*)bitmap;
Availability: MacOS-X 10.0.0
Description forthcoming.

### initWithContentsOfFile:

- (id) initWithContentsOfFile: (NSString*)fileName;
Availability: OpenStep

Initializes and returns a new NSImage from the file fileName. fileName should be an absolute path.

See Also: [NSImageRep +imageRepsWithContentsOfFile:]

### initWithContentsOfURL:

- (id) initWithContentsOfURL: (NSURL*)anURL;
Availability: MacOS-X 10.0.0
Description forthcoming.

### initWithData:

- (id) initWithData: (NSData*)data;
Availability: OpenStep

Initializes and returns a new NSImage from the NSData data.

See Also: [NSImageRep +imageRepWithData:]

### initWithIconHandle:

- (id) initWithIconHandle: (void*)icon;
Availability: MacOS-X 10.0.0
Description forthcoming.

### initWithPasteboard:

- (id) initWithPasteboard: (NSPasteboard*)pasteboard;
Availability: OpenStep

Initializes and returns a new NSImage from the data in pasteboard. the pasteboard types can be whose defined in [NSImageRep +imagePasteboardTypes] or NSFilenamesPboardType

See Also: [NSImageRep+imageRepsWithPasteboard:

### initWithSize:

- (id) initWithSize: (NSSize)aSize;
Availability: OpenStep

Initialize and returns a new NSImage with aSize as specified size.

See Also: -setSize: -size

### isCachedSeparately

- (BOOL) isCachedSeparately;
Availability: OpenStep
Description forthcoming.

### isDataRetained

- (BOOL) isDataRetained;
Availability: OpenStep
Description forthcoming.

### isFlipped

- (BOOL) isFlipped;
Availability: OpenStep
Description forthcoming.

### isValid

- (BOOL) isValid;
Availability: OpenStep
Description forthcoming.

### lockFocus

- (void) lockFocus;
Availability: OpenStep

Locks the focus on the best representation

See Also: -lockFocusOnRepresentation:

### lockFocusOnRepresentation:

- (void) lockFocusOnRepresentation: (NSImageRep*)imageRep;
Availability: OpenStep

Locks the focus in the imageRep. if imageRep is `nil` this method locks the focus on the best representation

### matchesOnMultipleResolution

- (BOOL) matchesOnMultipleResolution;
Availability: OpenStep
Description forthcoming.

### name

- (NSString*) name;
Availability: OpenStep
Description forthcoming.

### prefersColorMatch

- (BOOL) prefersColorMatch;
Availability: OpenStep
Description forthcoming.

### recache

- (void) recache;
Availability: OpenStep
Description forthcoming.

### removeRepresentation:

- (void) removeRepresentation: (NSImageRep*)imageRep;
Availability: OpenStep

Remove the NSImageRep imageRep from the NSImage's representations array

See Also: -addRepresentations: -addRepresentation:

### representations

- (NSArray*) representations;
Availability: OpenStep
Description forthcoming.

### scalesWhenResized

- (BOOL) scalesWhenResized;
Availability: OpenStep
Description forthcoming.

### setBackgroundColor:

- (void) setBackgroundColor: (NSColor*)aColor;
Availability: OpenStep

Sets the color of the NSImage's background to aColor

See Also: -backgroundColor

### setCacheDepthMatchesImageDepth:

- (void) setCacheDepthMatchesImageDepth: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setCacheMode:

- (void) setCacheMode: (NSImageCacheMode)mode;
Availability: OpenStep
Description forthcoming.

### setCachedSeparately:

- (void) setCachedSeparately: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setDataRetained:

- (void) setDataRetained: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setDelegate:

- (void) setDelegate: (id)anObject;
Availability: OpenStep
Description forthcoming.

### setFlipped:

- (void) setFlipped: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setMatchesOnMultipleResolution:

- (void) setMatchesOnMultipleResolution: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setName:

- (BOOL) setName: (NSString*)aName;
Availability: OpenStep
Description forthcoming.

### setPrefersColorMatch:

- (void) setPrefersColorMatch: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setScalesWhenResized:

- (void) setScalesWhenResized: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### setSize:

- (void) setSize: (NSSize)aSize;
Availability: OpenStep

Sets the NSImage size to aSize. Changing the size recreate the cache

See Also: -size -initWithSize:

### setUsesEPSOnResolutionMismatch:

- (void) setUsesEPSOnResolutionMismatch: (BOOL)flag;
Availability: OpenStep
Description forthcoming.

### size

- (NSSize) size;
Availability: OpenStep

Returns NSImage size if the size have been set. Returns the size of the best representation otherwise.

See Also: -setSize: -initWithSize:

### unlockFocus

- (void) unlockFocus;
Availability: OpenStep
Description forthcoming.

### usesEPSOnResolutionMismatch

- (BOOL) usesEPSOnResolutionMismatch;
Availability: OpenStep
Description forthcoming.

## Instance Variables for NSImage Class

### _cacheMode

@protected NSImageCacheMode _cacheMode;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _color

@protected NSColor* _color;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _delegate

@protected id _delegate;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _fileName

@protected NSString* _fileName;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _flags

@protected struct __imageFlags _flags;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _lockedView

@protected NSView* _lockedView;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _name

@protected NSString* _name;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _reps

@protected NSMutableArray* _reps;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

### _size

@protected NSSize _size;
Warning the underscore at the start of the name of this instance variable indicates that, even though it is not technically private, it is intended for internal use within the package, and you should not use the variable in other code.

# Software documentation for the NSBundle(NSImageAdditions) category

## NSBundle(NSImageAdditions)

> Declared in:
>   AppKit/NSImage.h

Availability: OpenStep
Description forthcoming.
Method summary

- -pathForImageResource:

### pathForImageResource:

- (NSString*) pathForImageResource: (NSString*)name;
Availability: OpenStep
Description forthcoming.

# Software documentation for the GSImageDelegateProtocol protocol

## GSImageDelegateProtocol

> Declared in:
>   AppKit/NSImage.h

Availability: Gui 0.0.0
Description forthcoming.
Method summary

- -imageDidNotDraw:inRect:

### imageDidNotDraw: inRect:

- (NSImage*) imageDidNotDraw: (id)sender inRect: (NSRect)aRect;
Availability: Gui 0.0.0
Description forthcoming.

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