• Constructors

• Altering Measurement Units

• Setting the Client View

• Setting an Accessory View

• Setting the Zero Mark Position

• Adding and Removing Markers

• Drawing Temporary Ruler Lines

• Drawing

• Ruler Layout

• Adding markers

• Moving markers

• Removing markers

• Handling mouse events

• Changing client view

• registerUnit

• accessoryView

• addMarker

• baselineLocation

• clientView

• drawHashMarksAndLabelsInRect

• drawMarkersInRect

• invalidateHashMarks

• isFlipped

• markers

• measurementUnits

• moveRulerline

• orientation

• originOffset

• removeMarker

• requiredThickness

• reservedThicknessForAccessoryView

• reservedThicknessForMarkers

• ruleThickness

• scrollView

• setAccessoryView

• setClientView

• setMarkers

• setMeasurementUnits

• setOrientation

• setOriginOffset

• setReservedThicknessForAccessoryView

• setReservedThicknessForMarkers

• setRuleThickness

• setScrollView

• trackMarker

• rulerViewDidAddMarker

• rulerViewDidMoveMarker

• rulerViewDidRemoveMarker

• rulerViewHandleMouseDown

• rulerViewShouldAddMarker

• rulerViewShouldMoveMarker

• rulerViewShouldRemoveMarker

• rulerViewWillAddMarker

• rulerViewWillMoveMarker

• rulerViewWillSetClientView