cog/Transformers/FontSizetoLineHeightTransfo...

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//
// FontSizetoLineHeightTransformer.m
// Cog
//
// Created by Matthew Grinshpun on 18/02/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import "FontSizetoLineHeightTransformer.h"
@implementation FontSizetoLineHeightTransformer
+ (Class)transformedValueClass {
return [NSNumber class];
}
+ (BOOL)allowsReverseTransformation {
return NO;
}
// Convert from font size to height in playlist view
- (id)transformedValue:(id)value {
NSFont *font = [NSFont systemFontOfSize:[(NSNumber *)value floatValue]];
NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
float fRowSize = [layoutManager defaultLineHeightForFont:font];
return [NSNumber numberWithFloat:fRowSize];
}
@end