• Constructors

• Getting the Ruler View

• Setting the Image

• Setting Movability

• Setting the Location

• Setting the Represented Object

• Drawing and Event Handling

• drawRect

• image

• imageOrigin

• imageRectInRuler

• isDragging

• isMovable

• isRemovable

• markerLocation

• representedObject

• ruler

• setImage

• setImageOrigin

• setMarkerLocation

• setMovable

• setRemovable

• setRepresentedObject

• thicknessRequiredInRuler

• trackMouseToAddMarker