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How to set row height based on its content in table?

Answer 1

+1 A:

The table view delegate protocol has a tableView:heightOfRow that lets you set the height of each row in the table view.

dj2 2010-07-05 15:16:42

thanx for your quick reply... can you suggest me if there is some standard way to calculate height of row based on its content or I have to manipulate some ratio: based on characters in the string and width of row..

Miraaj 2010-07-05 15:36:18

The one time I was doing it I was listening to the NSViewFrameDidChangeNotification notification and, when my specific view came up, I grabbed it's frame size. I'd store the size for the row cell and use the noteHeightOfRowsWithIndexesChanged method on the table to tell the table to update based on that row height changing.Probably not the best way to do it, but I only had to watch for a single webkit view that I was moving around.You can see the code, using MacRuby instead of Obj-C, at http://github.com/dj2/Rife/blob/master/lib/application.rb

dj2 2010-07-06 03:23:07

Miraaj: You can ask each column for its width, and you can ask a string how much space it'd take up if drawn into a rectangle of a given size (e.g., one with the column's width and very large height). http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Classes/NSString_AppKitAdditions/Reference/Reference.html#//apple_ref/occ/instm/NSString/boundingRectWithSize:options:attributes: For an image, you will have to do the math yourself, using the aspect ratio of the image's size.

Peter Hosey 2010-07-06 05:09:57

Answer 2

A:

Thanks all for your suggestions and help. This problem is now resolved using following code in tableView:heightOfRow -

float colWidth = [[[tableView tableColumns] objectAtIndex:1]width];

        NSString *content = [[[tempArray objectAtIndex:row] objectForKey:@"tValue"] string];

        float textWidth = [content sizeWithAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[NSFont fontWithName:@"Lucida Grande" size:15],NSFontAttributeName ,nil]].width;

        float newHeight = ceil(textWidth/colWidth);

        newHeight = (newHeight * 17) + 13;
        if(newHeight < 47){
            return 47;
        }   
        return newHeight;

Miraaj 2010-07-14 12:09:31

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How to set row height based on its content in table?

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