from enum import Enum

class Transformation(object):
    mirror_x = 0
    
    absolute_rotation = 0
    absolute_magnification = 0

    zoom = 1
    rotation = 0

class Element(object):
    elflags = 0
    plex    = 0
    datatype = 0

class Drawable(object):
    layer   = 0

class Boundary(Element, Drawable):
    points = []
    
class Path(Element, Drawable):
    class Styles(Enum):
        SQUARE_ENDS  = 0
        ROUNDED_ENDS = 1
        OFFSET_ENDS  = 2
        CUSTOM_END   = 4
    
    extendEnd = [0,0] # extend past start and end    
    width     = 0
    pathStyle = Styles.SQUARE_ENDS
    
    points = []

class Text(Element, Drawable):
    class VJust(Enum):
        Top    = 0
        Middle = 1
        Bottom = 2

    class HJust(Enum):
        Left   = 0
        Center = 1
        Right  = 2

    # text info
    string = ""
    position = (0,0)
    
    # presentation
    fontnumber               = 0
    verticalJustification    = VJust.Top
    horizontalJustification = HJust.Left

    # optional path info
    pathStype = Path.Styles.SQUARE_ENDS
    pathWidth = 0

    transformation = Transformation()

    
class Box(Element, Drawable):
    points = []

class SRef(Element):
    position = (0,0)
    structure = ""
    
    transformation  = Transformation()

    # tree
    parent   = None