112 lines
2.7 KiB
Python
112 lines
2.7 KiB
Python
__all__ = '''MultiCol'''.split()
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from reportlab.lib.utils import strTypes
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from .flowables import Flowable, _Container, _FindSplitterMixin, _listWrapOn
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class MultiCol(_Container,_FindSplitterMixin,Flowable):
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def __init__(self,contents,widths, minHeightNeeded=36, spaceBefore=None, spaceAfter=None):
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if len(contents)!=len(widths):
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raise ValueError('%r len(contents)=%d not the same as len(widths)=%d' % (self,len(contents),len(widths)))
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self.contents = contents
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self.widths = widths
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self.minHeightNeeded = minHeightNeeded
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self._spaceBefore = spaceBefore
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self._spaceAfter = spaceAfter
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self._naW = None
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def nWidths(self,aW):
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if aW==self._naW: return self._nW
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nW = [].append
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widths = self.widths
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s = 0.0
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for i,w in enumerate(widths):
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if isinstance(w,strTypes):
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w=w.strip()
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pc = w.endswith('%')
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if pc: w=w[:-1]
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try:
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w = float(w)
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except:
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raise ValueError('%s: nWidths failed with value %r' % (self,widths[i]))
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if pc: w = w*0.01*aW
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elif not isinstance(w,(float,int)):
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raise ValueError('%s: nWidths failed with value %r' % (self,widths[i]))
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s += w
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nW(w)
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self._naW = aW
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s = aW / s
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self._nW = [w*s for w in nW.__self__]
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return self._nW
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def wrap(self,aW,aH):
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widths = self.nWidths(aW)
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w = h = 0.0
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canv = self.canv
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h = 0
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for faW,F in zip(widths,self.contents):
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if not F:
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fW = faW
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fH = 0
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else:
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fW,fH = _listWrapOn(F,faW,canv)
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h = max(h,fH)
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w += fW
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self.width = w
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self.height = h
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return w, h
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def split(self,aW,aH):
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if aH<self.minHeightNeeded:
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return []
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widths = self.nWidths(aW)
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S = [[],[]]
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canv = self.canv
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for faW,F in zip(widths,self.contents):
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if not F:
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fW = faW
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fH0 = 0
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S0 = []
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S1 = []
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else:
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fW,fH0,S0,S1 = self._findSplit(canv,faW,aH,content=F,paraFix=False)
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if S0 is F: return [] #we failed to find a split
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S[0].append(S0)
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S[1].append(S1)
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return [
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MultiCol(S[0],
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self.widths,
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minHeightNeeded=self.minHeightNeeded,
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spaceBefore=self._spaceBefore,
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spaceAfter=self._spaceAfter),
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MultiCol(S[1],
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self.widths,
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minHeightNeeded=self.minHeightNeeded,
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spaceBefore=self._spaceBefore,
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spaceAfter=self._spaceAfter),
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]
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def getSpaceAfter(self):
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m = self._spaceAfter
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if m is None:
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m = 0
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for F in self.contents:
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m = max(m,_Container.getSpaceAfter(self,F))
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return m
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def getSpaceBefore(self):
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m = self._spaceBefore
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if m is None:
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m = 0
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for F in self.contents:
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m = max(m,_Container.getSpaceBefore(self,F))
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return m
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def drawOn(self, canv, x, y, _sW=0):
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widths = self._nW
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xOffs = 0
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for faW,F in zip(widths,self.contents):
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_Container.drawOn(self, canv, x+xOffs, y, content=F, aW=faW)
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xOffs += faW
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