NSRulerView

@interface NSRulerView : NSView

 // Initializers

   - (id)initWithScrollView:(NSScrollView *)scrollView orientation:(NSRulerOrientation)orientation;

 // Accessor Methods

   - (void)setReservedThicknessForAccessoryView:(float)thickness;

   - (float)reservedThicknessForAccessoryView;

   - (void)setScrollView:(NSScrollView *)scrollView;

   - (NSScrollView *)scrollView;

   - (void)setOriginOffset:(float)offset;

   - (float)originOffset;

   - (void)setOrientation:(NSRulerOrientation)orientation;

   - (NSRulerOrientation)orientation;

   - (void)setClientView:(NSView *)client;

   - (NSView *)clientView;

   - (void)setReservedThicknessForMarkers:(float)thickness;

   - (float)reservedThicknessForMarkers;

   - (void)setMarkers:(NSArray *)markers;

   - (NSArray *)markers;

   - (void)setRuleThickness:(float)thickness;

   - (float)ruleThickness;

   - (void)setAccessoryView:(NSView *)accessory;

   - (NSView *)accessoryView;

   - (void)setMeasurementUnits:(NSString *)unitName;

   - (NSString *)measurementUnits;

 // Class Methods

   + (void)registerUnitWithName:(NSString *)unitName abbreviation:(NSString *)abbreviation
        unitToPointsConversionFactor:(float)conversionFactor tepUpCycle:(NSArray *)stepUpCycle
        stepDownCycle:(NSArray *)stepDownCycle;

 // Instance Methods

   - (void)addMarker:(NSRulerMarker *)marker;

   - (float)baselineLocation;

   - (void)drawHashMarksAndLabelsInRect:(NSRect)rect;

   - (void)drawMarkersInRect:(NSRect)rect;

   - (void)invalidateHashMarks;

   - (BOOL)isFlipped;

   - (void)moveRulerlineFromLocation:(float)oldLocation toLocation:(float)newLocation;

   - (void)removeMarker:(NSRulerMarker *)marker;

   - (float)requiredThickness;

   - (BOOL)trackMarker:(NSRulerMarker *)marker withMouseEvent:(NSEvent *)event;