NSTableViewImagesAndText

(newbie question at bottom) :-)

#import <Cocoa/Cocoa.h>

@interface ImageAndTextCell : NSTextFieldCell {
@private
    NSImage	*image;
}

- (void)setImage:(NSImage *)anImage;
- (NSImage *)image;

- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView;
- (NSSize)cellSize;

@end

and:

@implementation ImageAndTextCell

- (void)dealloc {
    [image release];
    image = nil;
    [super dealloc];
}

- copyWithZone:(NSZone *)zone {
    ImageAndTextCell *cell = (ImageAndTextCell *)[super copyWithZone:zone];
    cell->image = [image retain];
    return cell;
}

- (void)setImage:(NSImage *)anImage {
    if (anImage != image) {
        [image release];
        image = [anImage retain];
    }
}

- (NSImage *)image {
    return image;
}

- (NSRect)imageFrameForCellFrame:(NSRect)cellFrame {
    if (image != nil) {
        NSRect imageFrame;
        imageFrame.size = [image size];
        imageFrame.origin = cellFrame.origin;
        imageFrame.origin.x += 3;
        imageFrame.origin.y += ceil((cellFrame.size.height - imageFrame.size.height) / 2);
        return imageFrame;
    }
    else
        return NSZeroRect;
}

- (void)editWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject event:(NSEvent *)theEvent {
    NSRect textFrame, imageFrame;
    NSDivideRect (aRect, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);
    [super editWithFrame: textFrame inView: controlView editor:textObj delegate:anObject event: theEvent];
}

- (void)selectWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject start:(int)selStart length:(int)selLength {
    NSRect textFrame, imageFrame;
    NSDivideRect (aRect, &imageFrame, &textFrame, 3 + [image size].width, NSMinXEdge);
    [super selectWithFrame: textFrame inView: controlView editor:textObj delegate:anObject start:selStart length:selLength];
}

- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {
    if (image != nil) {
        NSSize	imageSize;
        NSRect	imageFrame;

        imageSize = [image size];
        NSDivideRect(cellFrame, &imageFrame, &cellFrame, 3 + imageSize.width, NSMinXEdge);
        if ([self drawsBackground]) {
            [[self backgroundColor] set];
            NSRectFill(imageFrame);
        }
        imageFrame.origin.x += 3;
        imageFrame.size = imageSize;

        if ([controlView isFlipped])
            imageFrame.origin.y += ceil((cellFrame.size.height + imageFrame.size.height) / 2);
        else
            imageFrame.origin.y += ceil((cellFrame.size.height - imageFrame.size.height) / 2);

        [image compositeToPoint:imageFrame.origin operation:NSCompositeSourceOver];
    }
    [super drawWithFrame:cellFrame inView:controlView];
}

- (NSSize)cellSize {
    NSSize cellSize = [super cellSize];
    cellSize.width += (image ? [image size].width : 0) + 3;
    return cellSize;
}

@end

My question is this: how exactly do I implement this? Right now, I've got another class that has only a few attributes and accessor methods. But I can't figure out how the code above would work with my custom class (I'm assuming I might make an instance of the above in my class?).

If anyone could enlighten me that would be swell...

I'm going to answer my own question... But, feel free to critique what I've got here; I'm sure there must be a better way.

Anyways, all you really need to do, is implement these 2 sets of code:

// add this to your - (void) awakFromNib method
NSTableColumn *col = [self tableColumnWithIdentifier:@"whatever"]; 
[col setDataCell:[[[ImageAndTextCell alloc] init] autorelease]]; 

id cell; // implement this in your datasource 
cell = [aTableColumn dataCell];
[cell setImage:[NSImage imageNamed:@"OAHelpIcon.tiff"]];

But, make sure you import the previous code too...

- JohnDevor

ok it's work fine but ....

lose the setting font for cell text

ideas ?

- moore

I was recently playing around on my own with this, and the way I did it was slightly different. I similarly made the ImageAndTextCell subclass, but instead of having my own setImage, I made an ImageAndTextInfo class (as a subclass of NSObject), which encapsulates an image and a title. That way, i can just return an ImageAndTextInfo instance in my data source -tableView:objectValueForTableColumn:row: like normal and have my cell access it by [[self objectValue] image] or [[self objectValue] title]. I also overrode the NSCells -image and -title accessors to return those values. It simplifies things a bit in my opinion.

-- BrianMoore

-- Toni Moore