CODEWITHSUNDEEP
objective-ccocoacore-image
jacobsimeon
jacobsimeon

Reputation: 2188

CoreImage: Create a CIImage with solid color and display it in NSImageView

I want to programatically generate a rectangular image with a solid color fill. How can I do this? I want to populate inputImageView with inputImage.

Here's my code so far, but all I get is an empty image view:

-(void) awakeFromNib{
  CIColor *red = [CIColor colorWithRed:1 green:0 blue:0];
  CIImage *redImage = [CIImage imageWithColor:red];

  NSCIImageRep *ir = [NSCIImageRep imageRepWithCIImage:redImage];

  [self setInputImage:[[NSImage alloc] initWithSize: NSMakeSize(25, 25)]];
  //magic should be happening right here!
  [[self inputImage] addRepresentation:ir];
  [[self inputView] setImage:[self inputImage]];
  [inputView setNeedsDisplay:YES];
}

Upvotes: 1

Views: 3927

Answers (1)

rob mayoff
rob mayoff

Reputation: 385500

NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize(25, 25)];
[image lockFocus];
[[NSColor redColor] setFill];
[NSBezierPath fillRect:NSMakeRect(0, 0, 25, 25)];
[image unlockFocus];

Upvotes: 11

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