nsimage

I have NSBitmapImageRep which is W x H size. And I create NSImage and do addRepresentation: . Then I need to resize NSImage . I tried setSize method but it doesn't works. What should I do? Edit: Since this answer is still the accepted answer, but was written without Retina screens in mind, I will straight up link to a better solution further down the thread: Objective-C Swift 4 Because the method of Paresh is totally correct but deprecated since 10.8 I'll post the working 10.8 code below. All credit to Paresh's answer though. - (NSImage *)imageResize:(NSImage*)anImage newSize:(NSSize)newSize {

I see that sometimes NSImage size is not real size (with some pictures) and CIImage size is always real. I was testing with this image . This is source code which I wrote for testing: NSImage *_imageNSImage = [[NSImage alloc]initWithContentsOfFile:@"<path to image>"]; NSSize _dimensions = [_imageNSImage size]; [_imageNSImage release]; NSLog(@"Width from CIImage: %f",_dimensions.width); NSLog(@"Height from CIImage: %f",_dimensions.height); NSURL *_myURL = [NSURL fileURLWithPath:@"<path to image>"]; CIImage *_imageCIImage = [CIImage imageWithContentsOfURL:_myURL]; NSRect _rectFromCIImage = [

I'm doing some operations on images and after I'm done, I want to save the image as PNG on disk. I'm doing the following: + (void)saveImage:(NSImage *)image atPath:(NSString *)path { [image lockFocus] ; NSBitmapImageRep *imageRepresentation = [[NSBitmapImageRep alloc] initWithFocusedViewRect:NSMakeRect(0.0, 0.0, image.size.width, image.size.height)] ; [image unlockFocus] ; NSData *data = [imageRepresentation representationUsingType:NSPNGFileType properties:nil]; [data writeToFile:path atomically:YES]; } This code is working, but the problem is with retina mac, if I print the NSBitmapImageRep

How can I save a NSImage as a new file (png, jpg, ...) in a certain directory? garph0 Do something like this: NSBitmapImageRep *imgRep = [[image representations] objectAtIndex: 0]; NSData *data = [imgRep representationUsingType: NSPNGFileType properties: nil]; [data writeToFile: @"/path/to/file.png" atomically: NO]; You could add a category to NSImage like this @interface NSImage(saveAsJpegWithName) - (void) saveAsJpegWithName:(NSString*) fileName; @end @implementation NSImage(saveAsJpegWithName) - (void) saveAsJpegWithName:(NSString*) fileName { // Cache the reduced image NSData *imageData =