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Current File : /srv/modoboa/env/lib64/python3.5/site-packages/reportlab/graphics/widgets/markers.py
#Copyright ReportLab Europe Ltd. 2000-2017
#see license.txt for license details

__version__='3.3.0'
__doc__="""This modules defines a collection of markers used in charts.
"""

from reportlab.graphics.shapes import Rect, Line, Circle, Polygon, Drawing, Group
from reportlab.graphics.widgets.signsandsymbols import SmileyFace
from reportlab.graphics.widgetbase import Widget
from reportlab.lib.validators import isNumber, isColorOrNone, OneOf, Validator
from reportlab.lib.attrmap import AttrMap, AttrMapValue
from reportlab.lib.colors import black
from reportlab.lib.utils import isFunction, isClass
from reportlab.graphics.widgets.flags import Flag, _Symbol
from math import sin, cos, pi
_toradians = pi/180.0

class Marker(Widget):
    '''A polymorphic class of markers'''
    _attrMap = AttrMap(BASE=Widget,
                    kind = AttrMapValue(
                            OneOf(None, 'Square', 'Diamond', 'Circle', 'Cross', 'Triangle', 'StarSix',
                                'Pentagon', 'Hexagon', 'Heptagon', 'Octagon', 'StarFive',
                                'FilledSquare', 'FilledCircle', 'FilledDiamond', 'FilledCross',
                                'FilledTriangle','FilledStarSix', 'FilledPentagon', 'FilledHexagon',
                                'FilledHeptagon', 'FilledOctagon', 'FilledStarFive',
                                'Smiley','ArrowHead', 'FilledArrowHead'),
                            desc='marker type name'),
                    size = AttrMapValue(isNumber,desc='marker size'),
                    x = AttrMapValue(isNumber,desc='marker x coordinate'),
                    y = AttrMapValue(isNumber,desc='marker y coordinate'),
                    dx = AttrMapValue(isNumber,desc='marker x coordinate adjustment'),
                    dy = AttrMapValue(isNumber,desc='marker y coordinate adjustment'),
                    angle = AttrMapValue(isNumber,desc='marker rotation'),
                    fillColor = AttrMapValue(isColorOrNone, desc='marker fill colour'),
                    strokeColor = AttrMapValue(isColorOrNone, desc='marker stroke colour'),
                    strokeWidth = AttrMapValue(isNumber, desc='marker stroke width'),
                    arrowBarbDx = AttrMapValue(isNumber, desc='arrow only the delta x for the barbs'),
                    arrowHeight = AttrMapValue(isNumber, desc='arrow only height'),
                    )

    def __init__(self,*args,**kw):
        self.setProperties(kw)
        self._setKeywords(
            kind = None,
            strokeColor = black,
            strokeWidth = 0.1,
            fillColor = None,
            size = 5,
            x = 0,
            y = 0,
            dx = 0,
            dy = 0,
            angle = 0,
            arrowBarbDx = -1.25,
            arrowHeight = 1.875,
            )

    def clone(self,**kwds):
        n = self.__class__(**self.__dict__)
        if kwds: n.__dict__.update(kwds)
        return n

    def _Smiley(self):
        x, y = self.x+self.dx, self.y+self.dy
        d = self.size/2.0
        s = SmileyFace()
        s.fillColor = self.fillColor
        s.strokeWidth = self.strokeWidth
        s.strokeColor = self.strokeColor
        s.x = x-d
        s.y = y-d
        s.size = d*2
        return s

    def _Square(self):
        x, y = self.x+self.dx, self.y+self.dy
        d = self.size/2.0
        s = Rect(x-d,y-d,2*d,2*d,fillColor=self.fillColor,strokeColor=self.strokeColor,strokeWidth=self.strokeWidth)
        return s

    def _Diamond(self):
        d = self.size/2.0
        return self._doPolygon((-d,0,0,d,d,0,0,-d))

    def _Circle(self):
        x, y = self.x+self.dx, self.y+self.dy
        s = Circle(x,y,self.size/2.0,fillColor=self.fillColor,strokeColor=self.strokeColor,strokeWidth=self.strokeWidth)
        return s

    def _Cross(self):
        x, y = self.x+self.dx, self.y+self.dy
        s = float(self.size)
        h, s = s/2, s/6
        return self._doPolygon((-s,-h,-s,-s,-h,-s,-h,s,-s,s,-s,h,s,h,s,s,h,s,h,-s,s,-s,s,-h))

    def _Triangle(self):
        x, y = self.x+self.dx, self.y+self.dy
        r = float(self.size)/2
        c = 30*_toradians
        s = sin(30*_toradians)*r
        c = cos(c)*r
        return self._doPolygon((0,r,-c,-s,c,-s))

    def _StarSix(self):
        r = float(self.size)/2
        c = 30*_toradians
        s = sin(c)*r
        c = cos(c)*r
        z = s/2
        g = c/2
        return self._doPolygon((0,r,-z,s,-c,s,-s,0,-c,-s,-z,-s,0,-r,z,-s,c,-s,s,0,c,s,z,s))

    def _StarFive(self):
        R = float(self.size)/2
        r = R*sin(18*_toradians)/cos(36*_toradians)
        P = []
        angle = 90
        for i in range(5):
            for radius in R, r:
                theta = angle*_toradians
                P.append(radius*cos(theta))
                P.append(radius*sin(theta))
                angle = angle + 36
        return self._doPolygon(P)

    def _Pentagon(self):
        return self._doNgon(5)

    def _Hexagon(self):
        return self._doNgon(6)

    def _Heptagon(self):
        return self._doNgon(7)

    def _Octagon(self):
        return self._doNgon(8)

    def _ArrowHead(self):
        s = self.size
        h = self.arrowHeight
        b = self.arrowBarbDx
        return self._doPolygon((0,0,b,-h,s,0,b,h))

    def _doPolygon(self,P):
        x, y = self.x+self.dx, self.y+self.dy
        if x or y: P = list(map(lambda i,P=P,A=[x,y]: P[i] + A[i&1], list(range(len(P)))))
        return Polygon(P, strokeWidth =self.strokeWidth, strokeColor=self.strokeColor, fillColor=self.fillColor)

    def _doFill(self):
        old = self.fillColor
        if old is None:
            self.fillColor = self.strokeColor
        r = (self.kind and getattr(self,'_'+self.kind[6:]) or Group)()
        self.fillColor = old
        return r

    def _doNgon(self,n):
        P = []
        size = float(self.size)/2
        for i in range(n):
            r = (2.*i/n+0.5)*pi
            P.append(size*cos(r))
            P.append(size*sin(r))
        return self._doPolygon(P)

    _FilledCircle = _doFill
    _FilledSquare = _doFill
    _FilledDiamond = _doFill
    _FilledCross = _doFill
    _FilledTriangle = _doFill
    _FilledStarSix = _doFill
    _FilledPentagon = _doFill
    _FilledHexagon = _doFill
    _FilledHeptagon = _doFill
    _FilledOctagon = _doFill
    _FilledStarFive = _doFill
    _FilledArrowHead = _doFill

    def draw(self):
        if self.kind:
            m = getattr(self,'_'+self.kind)
            if self.angle:
                _x, _dx, _y, _dy = self.x, self.dx, self.y, self.dy
                self.x, self.dx, self.y, self.dy = 0,0,0,0
                try:
                    m = m()
                finally:
                    self.x, self.dx, self.y, self.dy = _x, _dx, _y, _dy
                if not isinstance(m,Group):
                    _m, m = m, Group()
                    m.add(_m)
                if self.angle: m.rotate(self.angle)
                x, y = _x+_dx, _y+_dy
                if x or y: m.shift(x,y)
            else:
                m = m()
        else:
            m = Group()
        return m

def uSymbol2Symbol(uSymbol,x,y,color):
    if isClass(uSymbol) and issubclass(uSymbol,Widget):
        size = 10.
        symbol = uSymbol()
        symbol.x = x - (size/2)
        symbol.y = y - (size/2)
        try:
            symbol.size = size
            symbol.color = color
        except:
            pass
    elif isinstance(uSymbol,Marker) or isinstance(uSymbol,_Symbol):
        symbol = uSymbol.clone()
        if isinstance(uSymbol,Marker): symbol.fillColor = symbol.fillColor or color
        symbol.x, symbol.y = x, y
    elif callable(uSymbol):
        symbol = uSymbol(x, y, 5, color)
    else:
        symbol = None
    return symbol

class _isSymbol(Validator):
    def test(self,x):
        return hasattr(x,'__call__') or isinstance(x,Marker) or isinstance(x,_Symbol) or (isClass(x) and issubclass(x,Widget))

isSymbol = _isSymbol()

def makeMarker(name,**kw):
    if Marker._attrMap['kind'].validate(name):
        m = Marker(**kw)
        m.kind = name
    elif name[-5:]=='_Flag' and Flag._attrMap['kind'].validate(name[:-5]):
        m = Flag(**kw)
        m.kind = name[:-5]
        m.size = 10
    else:
        raise ValueError("Invalid marker name %s" % name)
    return m

if __name__=='__main__':
    D = Drawing()
    D.add(Marker())
    D.save(fnRoot='Marker',formats=['pdf'], outDir='/tmp')

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