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1 #import "fooDecibelFormatter.h"
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2
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3 @implementation fooDecibelFormatter
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4
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5 - (NSString*) formatNumber: (id) obj {
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6
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7 double v = [ obj doubleValue ];
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8
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9 if ( self.showSignAlways ) {
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10 if (v == 0) return [NSString stringWithUTF8String: "\xc2\xb1" "0"];
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11 if ( v > 0 ) {
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12 if (v == (double) (int) v) return [NSString stringWithFormat: @"+%i", (int)v];
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13 else return [NSString stringWithFormat: @"+%.02f", v];
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14 }
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15 }
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16
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17 if (v == (double) (int) v) return [NSString stringWithFormat: @"%i", (int)v];
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18 else return [NSString stringWithFormat: @"%.02f", v];
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19 }
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20
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21 - (NSString *)stringForObjectValue:(id)obj {
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22 return [NSString stringWithFormat: @"%@ dB", [self formatNumber: obj]];
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23 }
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24
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25 - (NSAttributedString *)attributedStringForObjectValue:(id)obj withDefaultAttributes:(NSDictionary *)attrs {
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26 return nil;
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27 }
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28
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29 - (NSString *)editingStringForObjectValue:(id)obj {
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30 return [self stringForObjectValue: obj];
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31 // return [self formatNumber: obj];
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32 }
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33
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34 - (BOOL)getObjectValue:(out __autoreleasing id *)obj forString:(NSString *)string errorDescription:(out NSString *__autoreleasing *)error {
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35 if (error) *error = nil;
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36
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37 {
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38 NSMutableCharacterSet * trimMe = [NSMutableCharacterSet whitespaceAndNewlineCharacterSet];
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39 [trimMe addCharactersInString: [NSString stringWithUTF8String: "+\xc2\xb1" ]];
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40 string = [ string.lowercaseString stringByTrimmingCharactersInSet: trimMe ];
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41 }
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42
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43 if ( [string hasSuffix: @"db"]) {
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44 string = [ [string substringToIndex: string.length-2] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceCharacterSet] ];
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45 }
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46
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47 double v = string.doubleValue;
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48 if (self.minValue) {
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49 if (v < self.minValue.doubleValue) v = self.minValue.doubleValue;
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50 }
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51 if (self.maxValue) {
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52 if (v > self.maxValue.doubleValue) v = self.maxValue.doubleValue;
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53 }
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54 *obj = [NSNumber numberWithDouble: v];
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55 return YES;
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56 }
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57
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58 @end
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