/usr/lib/python2.7/dist-packages/reportlab/platypus/paragraph.py is in python-reportlab 3.3.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#see license.txt for license details
#history http://www.reportlab.co.uk/cgi-bin/viewcvs.cgi/public/reportlab/trunk/reportlab/platypus/paragraph.py
__version__='3.3.0'
__doc__='''The standard paragraph implementation'''
from string import whitespace
from operator import truth
from unicodedata import category
from reportlab.pdfbase.pdfmetrics import stringWidth, getFont, getAscentDescent
from reportlab.platypus.paraparser import ParaParser
from reportlab.platypus.flowables import Flowable
from reportlab.lib.colors import Color
from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER, TA_JUSTIFY
from reportlab.lib.geomutils import normalizeTRBL
from reportlab.lib.textsplit import wordSplit, ALL_CANNOT_START
from copy import deepcopy
from reportlab.lib.abag import ABag
from reportlab.rl_config import platypus_link_underline, decimalSymbol, _FUZZ, paraFontSizeHeightOffset
from reportlab.lib.utils import _className, isBytes, unicodeT, bytesT, strTypes
from reportlab.lib.rl_accel import sameFrag
import re
from types import MethodType
#on UTF8/py33 branch, split and strip must be unicode-safe!
#thanks to Dirk Holtwick for helpful discussions/insight
#on this one
_wsc = ''.join((
u'\u0009', # HORIZONTAL TABULATION
u'\u000A', # LINE FEED
u'\u000B', # VERTICAL TABULATION
u'\u000C', # FORM FEED
u'\u000D', # CARRIAGE RETURN
u'\u001C', # FILE SEPARATOR
u'\u001D', # GROUP SEPARATOR
u'\u001E', # RECORD SEPARATOR
u'\u001F', # UNIT SEPARATOR
u'\u0020', # SPACE
u'\u0085', # NEXT LINE
#u'\u00A0', # NO-BREAK SPACE
u'\u1680', # OGHAM SPACE MARK
u'\u2000', # EN QUAD
u'\u2001', # EM QUAD
u'\u2002', # EN SPACE
u'\u2003', # EM SPACE
u'\u2004', # THREE-PER-EM SPACE
u'\u2005', # FOUR-PER-EM SPACE
u'\u2006', # SIX-PER-EM SPACE
u'\u2007', # FIGURE SPACE
u'\u2008', # PUNCTUATION SPACE
u'\u2009', # THIN SPACE
u'\u200A', # HAIR SPACE
u'\u200B', # ZERO WIDTH SPACE
u'\u2028', # LINE SEPARATOR
u'\u2029', # PARAGRAPH SEPARATOR
u'\u202F', # NARROW NO-BREAK SPACE
u'\u205F', # MEDIUM MATHEMATICAL SPACE
u'\u3000', # IDEOGRAPHIC SPACE
))
_wsc_re_split=re.compile('[%s]+'% re.escape(_wsc)).split
_wsc_end_search=re.compile('[%s]+$'% re.escape(_wsc)).search
def split(text, delim=None):
if isBytes(text): text = text.decode('utf8')
if delim is not None and isBytes(delim): delim = delim.decode('utf8')
return [uword for uword in (_wsc_re_split(text) if delim is None and u'\xa0' in text else text.split(delim))]
def strip(text):
if isBytes(text): text = text.decode('utf8')
return text.strip(_wsc)
class ParaLines(ABag):
"""
class ParaLines contains the broken into lines representation of Paragraphs
kind=0 Simple
fontName, fontSize, textColor apply to whole Paragraph
lines [(extraSpace1,words1),....,(extraspaceN,wordsN)]
kind==1 Complex
lines [FragLine1,...,FragLineN]
"""
class FragLine(ABag):
"""
class FragLine contains a styled line (ie a line with more than one style)::
extraSpace unused space for justification only
wordCount 1+spaces in line for justification purposes
words [ParaFrags] style text lumps to be concatenated together
fontSize maximum fontSize seen on the line; not used at present,
but could be used for line spacing.
"""
def _lineClean(L):
return ' '.join(list(filter(truth,split(strip(L)))))
def cleanBlockQuotedText(text,joiner=' '):
"""This is an internal utility which takes triple-
quoted text form within the document and returns
(hopefully) the paragraph the user intended originally."""
L=list(filter(truth,list(map(_lineClean, split(text, '\n')))))
return joiner.join(L)
def setXPos(tx,dx):
if dx>1e-6 or dx<-1e-6:
tx.setXPos(dx)
def _leftDrawParaLine( tx, offset, extraspace, words, last=0):
setXPos(tx,offset)
tx._textOut(' '.join(words),1)
setXPos(tx,-offset)
return offset
def _centerDrawParaLine( tx, offset, extraspace, words, last=0):
m = offset + 0.5 * extraspace
setXPos(tx,m)
tx._textOut(' '.join(words),1)
setXPos(tx,-m)
return m
def _rightDrawParaLine( tx, offset, extraspace, words, last=0):
m = offset + extraspace
setXPos(tx,m)
tx._textOut(' '.join(words),1)
setXPos(tx,-m)
return m
def _nbspCount(w):
if isBytes(w):
return w.count(b'\xc2\xa0')
else:
return w.count(u'\xa0')
def _justifyDrawParaLine( tx, offset, extraspace, words, last=0):
setXPos(tx,offset)
text = ' '.join(words)
if last or extraspace<=1e-8:
#last one, left align
tx._textOut(text,1)
else:
nSpaces = len(words)+sum([_nbspCount(w) for w in words])-1
if nSpaces:
tx.setWordSpace(extraspace / float(nSpaces))
tx._textOut(text,1)
tx.setWordSpace(0)
else:
tx._textOut(text,1)
setXPos(tx,-offset)
return offset
def imgVRange(h,va,fontSize):
'''return bottom,top offsets relative to baseline(0)'''
if va=='baseline':
iyo = 0
elif va in ('text-top','top'):
iyo = fontSize-h
elif va=='middle':
iyo = fontSize - (1.2*fontSize+h)*0.5
elif va in ('text-bottom','bottom'):
iyo = fontSize - 1.2*fontSize
elif va=='super':
iyo = 0.5*fontSize
elif va=='sub':
iyo = -0.5*fontSize
elif hasattr(va,'normalizedValue'):
iyo = va.normalizedValue(fontSize)
else:
iyo = va
return iyo,iyo+h
def imgNormV(v,nv):
if hasattr(v,'normalizedValue'):
return v.normalizedValue(nv)
else:
return v
def _getDotsInfo(style):
dots = style.endDots
if isinstance(dots,str):
text = dots
fontName = style.fontName
fontSize = style.fontSize
textColor = style.textColor
backColor = style.backColor
dy = 0
else:
text = getattr(dots,'text','.')
fontName = getattr(dots,'fontName',style.fontName)
fontSize = getattr(dots,'fontSize',style.fontSize)
textColor = getattr(dots,'textColor',style.textColor)
backColor = getattr(dots,'backColor',style.backColor)
dy = getattr(dots,'dy',0)
return text,fontName,fontSize,textColor,backColor,dy
_56=5./6
_16=1./6
def _putFragLine(cur_x, tx, line, last, pKind):
xs = tx.XtraState
cur_y = xs.cur_y
x0 = tx._x0
autoLeading = xs.autoLeading
leading = xs.leading
cur_x += xs.leftIndent
dal = autoLeading in ('min','max')
if dal:
if autoLeading=='max':
ascent = max(_56*leading,line.ascent)
descent = max(_16*leading,-line.descent)
else:
ascent = line.ascent
descent = -line.descent
leading = ascent+descent
if tx._leading!=leading:
tx.setLeading(leading)
if dal:
olb = tx._olb
if olb is not None:
xcy = olb-ascent
if tx._oleading!=leading:
cur_y += leading - tx._oleading
if abs(xcy-cur_y)>1e-8:
cur_y = xcy
tx.setTextOrigin(x0,cur_y)
xs.cur_y = cur_y
tx._olb = cur_y - descent
tx._oleading = leading
ws = getattr(tx,'_wordSpace',0)
nSpaces = 0
words = line.words
for i, f in enumerate(words):
if hasattr(f,'cbDefn'):
cbDefn = f.cbDefn
kind = cbDefn.kind
if kind=='img':
#draw image cbDefn,cur_y,cur_x
txfs = tx._fontsize
if txfs is None:
txfs = xs.style.fontSize
w = imgNormV(cbDefn.width,None)
h = imgNormV(cbDefn.height,txfs)
iy0,iy1 = imgVRange(h,cbDefn.valign,txfs)
cur_x_s = cur_x + nSpaces*ws
tx._canvas.drawImage(cbDefn.image,cur_x_s,cur_y+iy0,w,h,mask='auto')
cur_x += w
cur_x_s += w
setXPos(tx,cur_x_s-tx._x0)
else:
name = cbDefn.name
if kind=='anchor':
tx._canvas.bookmarkHorizontal(name,cur_x,cur_y+leading)
else:
func = getattr(tx._canvas,name,None)
if not func:
raise AttributeError("Missing %s callback attribute '%s'" % (kind,name))
tx._canvas._curr_tx_info=dict(tx=tx,cur_x=cur_x,cur_y=cur_y,leading=leading,xs=tx.XtraState)
try:
func(tx._canvas,kind,getattr(cbDefn,'label',None))
finally:
del tx._canvas._curr_tx_info
if f is words[-1]:
if not tx._fontname:
tx.setFont(xs.style.fontName,xs.style.fontSize)
tx._textOut('',1)
else:
cur_x_s = cur_x + nSpaces*ws
end_x = cur_x_s
if i > 0:
end_x = cur_x_s - _trailingSpaceLength(words[i-1].text, tx)
if (tx._fontname,tx._fontsize)!=(f.fontName,f.fontSize):
tx._setFont(f.fontName, f.fontSize)
if xs.textColor!=f.textColor:
xs.textColor = f.textColor
tx.setFillColor(f.textColor)
if xs.rise!=f.rise:
xs.rise=f.rise
tx.setRise(f.rise)
text = f.text
tx._textOut(text,f is words[-1]) # cheap textOut
if not xs.underline and f.underline:
xs.underline = 1
xs.underline_x = cur_x_s
xs.underlineColor = f.textColor
elif xs.underline:
if not f.underline:
xs.underline = 0
xs.underlines.append( (xs.underline_x, end_x, xs.underlineColor) )
xs.underlineColor = None
elif xs.textColor!=xs.underlineColor:
xs.underlines.append( (xs.underline_x, end_x, xs.underlineColor) )
xs.underlineColor = xs.textColor
xs.underline_x = cur_x_s
if not xs.strike and f.strike:
xs.strike = 1
xs.strike_x = cur_x_s
xs.strikeColor = f.textColor
elif xs.strike:
if not f.strike:
xs.strike = 0
xs.strikes.append( (xs.strike_x, end_x, xs.strikeColor) )
xs.strikeColor = None
elif xs.textColor!=xs.strikeColor:
xs.strikes.append( (xs.strike_x, end_x, xs.strikeColor) )
xs.strikeColor = xs.textColor
xs.strike_x = cur_x_s
if f.link and not xs.link:
if not xs.link:
xs.link = f.link
xs.link_x = cur_x_s
xs.linkColor = xs.textColor
elif xs.link:
if not f.link:
xs.links.append( (xs.link_x, end_x, xs.link, xs.linkColor) )
xs.link = None
xs.linkColor = None
elif f.link!=xs.link or xs.textColor!=xs.linkColor:
xs.links.append( (xs.link_x, end_x, xs.link, xs.linkColor) )
xs.link = f.link
xs.link_x = cur_x_s
xs.linkColor = xs.textColor
bg = getattr(f,'backColor',None)
if bg and not xs.backColor:
xs.backColor = bg
xs.backColor_x = cur_x_s
elif xs.backColor:
if not bg:
xs.backColors.append( (xs.backColor_x, end_x, xs.backColor) )
xs.backColor = None
elif f.backColor!=xs.backColor or xs.textColor!=xs.backColor:
xs.backColors.append( (xs.backColor_x, end_x, xs.backColor) )
xs.backColor = bg
xs.backColor_x = cur_x_s
txtlen = tx._canvas.stringWidth(text, tx._fontname, tx._fontsize)
cur_x += txtlen
nSpaces += text.count(' ')+_nbspCount(text)
cur_x_s = cur_x+(nSpaces-1)*ws
if last and pKind!='right' and xs.style.endDots:
_do_dots_frag(cur_x,cur_x_s,line.maxWidth,xs,tx)
if xs.underline:
xs.underlines.append( (xs.underline_x, cur_x_s, xs.underlineColor) )
if xs.strike:
xs.strikes.append( (xs.strike_x, cur_x_s, xs.strikeColor) )
if xs.link:
xs.links.append( (xs.link_x, cur_x_s, xs.link,xs.linkColor) )
if xs.backColor:
xs.backColors.append( (xs.backColor_x, cur_x_s, xs.backColor) )
if tx._x0!=x0:
setXPos(tx,x0-tx._x0)
def _do_dots_frag(cur_x, cur_x_s, maxWidth, xs, tx):
text,fontName,fontSize,textColor,backColor,dy = _getDotsInfo(xs.style)
txtlen = tx._canvas.stringWidth(text, fontName, fontSize)
if cur_x_s+txtlen<=maxWidth:
if tx._fontname!=fontName or tx._fontsize!=fontSize:
tx.setFont(fontName,fontSize)
maxWidth += getattr(tx,'_dotsOffsetX',tx._x0)
tx.setTextOrigin(0,xs.cur_y+dy)
setXPos(tx,cur_x_s-cur_x)
n = int((maxWidth-cur_x_s)/txtlen)
setXPos(tx,maxWidth - txtlen*n)
if xs.textColor!=textColor:
tx.setFillColor(textColor)
if backColor: xs.backColors.append((cur_x,maxWidth,backColor))
tx._textOut(n*text,1)
if dy: tx.setTextOrigin(tx._x0,xs.cur_y-dy)
def _leftDrawParaLineX( tx, offset, line, last=0):
setXPos(tx,offset)
_putFragLine(offset, tx, line, last, 'left')
setXPos(tx,-offset)
def _centerDrawParaLineX( tx, offset, line, last=0):
tx._dotsOffsetX = offset + tx._x0
try:
m = offset+0.5*line.extraSpace
setXPos(tx,m)
_putFragLine(m,tx, line, last,'center')
setXPos(tx,-m)
finally:
del tx._dotsOffsetX
def _rightDrawParaLineX( tx, offset, line, last=0):
m = offset+line.extraSpace
setXPos(tx,m)
_putFragLine(m,tx, line, last, 'right')
setXPos(tx,-m)
def _justifyDrawParaLineX( tx, offset, line, last=0):
setXPos(tx,offset)
extraSpace = line.extraSpace
simple = last or abs(extraSpace)<=1e-8 or line.lineBreak
if not simple:
nSpaces = line.wordCount+sum([_nbspCount(w.text) for w in line.words if not hasattr(w,'cbDefn')])-1
simple = not nSpaces
if not simple:
tx.setWordSpace(extraSpace / float(nSpaces))
_putFragLine(offset, tx, line, last, 'justify')
tx.setWordSpace(0)
else:
_putFragLine(offset, tx, line, last, 'justify') #no space modification
setXPos(tx,-offset)
def _trailingSpaceLength(text, tx):
ws = _wsc_end_search(text)
return tx._canvas.stringWidth(ws.group(), tx._fontname, tx._fontsize) if ws else 0
def _getFragWords(frags,maxWidth=None):
''' given a Parafrag list return a list of fragwords
[[size, (f00,w00), ..., (f0n,w0n)],....,[size, (fm0,wm0), ..., (f0n,wmn)]]
each pair f,w represents a style and some string
each sublist represents a word
'''
R = []
W = []
n = 0
hangingStrip = False
for f in frags:
text = f.text
#del f.text # we can't do this until we sort out splitting
# of paragraphs
if text!='':
if hangingStrip:
hangingStrip = False
text = text.lstrip()
S = split(text)
if S==[]: S = ['']
if W!=[] and text[0] in whitespace:
W.insert(0,n)
R.append(W)
W = []
n = 0
for w in S[:-1]:
W.append((f,w))
n += stringWidth(w, f.fontName, f.fontSize)
W.insert(0,n)
R.append(W)
W = []
n = 0
w = S[-1]
W.append((f,w))
n += stringWidth(w, f.fontName, f.fontSize)
if text and text[-1] in whitespace:
W.insert(0,n)
R.append(W)
W = []
n = 0
elif hasattr(f,'cbDefn'):
cb = f.cbDefn
w = getattr(cb,'width',0)
if w:
if hasattr(w,'normalizedValue'):
w._normalizer = maxWidth
w = w.normalizedValue(maxWidth)
if W!=[]:
W.insert(0,n)
R.append(W)
W = []
n = 0
R.append([w,(f,'')])
else:
W.append((f,''))
elif hasattr(f, 'lineBreak'):
#pass the frag through. The line breaker will scan for it.
if W!=[]:
W.insert(0,n)
R.append(W)
W = []
n = 0
R.append([0,(f,'')])
hangingStrip = True
if W!=[]:
W.insert(0,n)
R.append(W)
return R
def _fragWordIter(w):
for f, s in w[1:]:
if hasattr(f,'cbDefn'):
yield f, getattr(f,'width'), s
elif s:
if isBytes(s):
s = s.decode('utf8') #only encoding allowed
for c in s:
yield f, stringWidth(c,f.fontName, f.fontSize), c
else:
yield f, 0, s
class _SplitList(list):
pass
def _splitFragWord(w,maxWidth,maxWidths,lineno):
'''given a frag word, w, as returned by getFragWords
split it into frag words that fit in lines of length
maxWidth
maxWidths[lineno+1]
.....
maxWidths[lineno+n]
return the new word list
'''
R = []
maxlineno = len(maxWidths)-1
W = []
lineWidth = 0
fragText = u''
wordWidth = 0
f = w[1][0]
for g,cw,c in _fragWordIter(w):
newLineWidth = lineWidth+cw
tooLong = newLineWidth>maxWidth
if g is not f or tooLong:
f = f.clone()
if hasattr(f,'text'):
f.text = fragText
W.append((f,fragText))
if tooLong:
W = _SplitList([wordWidth]+W)
R.append(W)
lineno += 1
maxWidth = maxWidths[min(maxlineno,lineno)]
W = []
newLineWidth = wordWidth = cw
fragText = u''
f = g
wordWidth = 0
wordWidth += cw
fragText += c
lineWidth = newLineWidth
W.append((f,fragText))
W = _SplitList([wordWidth]+W)
R.append(W)
return R
class _SplitText(unicodeT):
pass
def _splitWord(w,maxWidth,maxWidths,lineno,fontName,fontSize,encoding='utf8'):
'''
split w into words that fit in lines of length
maxWidth
maxWidths[lineno+1]
.....
maxWidths[lineno+n]
then push those new words onto words
'''
#TODO fix this to use binary search for the split points
R = []
maxlineno = len(maxWidths)-1
lineWidth = 0
wordText = u''
if isBytes(w):
w = w.decode(encoding)
for c in w:
cw = stringWidth(c,fontName,fontSize,encoding)
newLineWidth = lineWidth+cw
if newLineWidth>maxWidth:
R.append(_SplitText(wordText))
lineno += 1
maxWidth = maxWidths[min(maxlineno,lineno)]
newLineWidth = cw
wordText = u''
wordText += c
lineWidth = newLineWidth
R.append(_SplitText(wordText))
return R
def _split_blParaSimple(blPara,start,stop):
f = blPara.clone()
for a in ('lines', 'kind', 'text'):
if hasattr(f,a): delattr(f,a)
f.words = []
for l in blPara.lines[start:stop]:
for w in l[1]:
f.words.append(w)
return [f]
def _split_blParaHard(blPara,start,stop):
f = []
lines = blPara.lines[start:stop]
for l in lines:
for w in l.words:
f.append(w)
if l is not lines[-1]:
i = len(f)-1
while i>=0 and hasattr(f[i],'cbDefn') and not getattr(f[i].cbDefn,'width',0): i -= 1
if i>=0:
g = f[i]
if not g.text: g.text = ' '
elif g.text[-1]!=' ': g.text += ' '
return f
def _drawBullet(canvas, offset, cur_y, bulletText, style, rtl):
'''draw a bullet text could be a simple string or a frag list'''
bulletAnchor = style.bulletAnchor
if rtl or style.bulletAnchor!='start':
numeric = bulletAnchor=='numeric'
if isinstance(bulletText,strTypes):
t = bulletText
q = numeric and decimalSymbol in t
if q: t = t[:t.index(decimalSymbol)]
bulletWidth = stringWidth(t, style.bulletFontName, style.bulletFontSize)
if q: bulletWidth += 0.5 * stringWidth(decimalSymbol, style.bulletFontName, style.bulletFontSize)
else:
#it's a list of fragments
bulletWidth = 0
for f in bulletText:
t = f.text
q = numeric and decimalSymbol in t
if q:
t = t[:t.index(decimalSymbol)]
bulletWidth += 0.5 * stringWidth(decimalSymbol, f.fontName, f.fontSize)
bulletWidth += stringWidth(t, f.fontName, f.fontSize)
if q:
break
else:
bulletWidth = 0
if bulletAnchor=='middle': bulletWidth *= 0.5
cur_y += getattr(style,"bulletOffsetY",0)
if not rtl:
tx2 = canvas.beginText(style.bulletIndent-bulletWidth,cur_y)
else:
width = rtl[0]
bulletStart = width+style.rightIndent-(style.bulletIndent+bulletWidth)
tx2 = canvas.beginText(bulletStart, cur_y)
tx2.setFont(style.bulletFontName, style.bulletFontSize)
tx2.setFillColor(getattr(style,'bulletColor',style.textColor))
if isinstance(bulletText,strTypes):
tx2.textOut(bulletText)
else:
for f in bulletText:
tx2.setFont(f.fontName, f.fontSize)
tx2.setFillColor(f.textColor)
tx2.textOut(f.text)
canvas.drawText(tx2)
if not rtl:
#AR making definition lists a bit less ugly
#bulletEnd = tx2.getX()
bulletEnd = tx2.getX() + style.bulletFontSize * 0.6
offset = max(offset,bulletEnd - style.leftIndent)
return offset
def _handleBulletWidth(bulletText,style,maxWidths):
'''work out bullet width and adjust maxWidths[0] if neccessary
'''
if bulletText:
if isinstance(bulletText,strTypes):
bulletWidth = stringWidth( bulletText, style.bulletFontName, style.bulletFontSize)
else:
#it's a list of fragments
bulletWidth = 0
for f in bulletText:
bulletWidth += stringWidth(f.text, f.fontName, f.fontSize)
bulletLen = style.bulletIndent + bulletWidth + 0.6 * style.bulletFontSize
if style.wordWrap=='RTL':
indent = style.rightIndent+style.firstLineIndent
else:
indent = style.leftIndent+style.firstLineIndent
if bulletLen > indent:
#..then it overruns, and we have less space available on line 1
maxWidths[0] -= (bulletLen - indent)
def splitLines0(frags,widths):
'''
given a list of ParaFrags we return a list of ParaLines
each ParaLine has
1) ExtraSpace
2) blankCount
3) [textDefns....]
each text definition is a (ParaFrag, start, limit) triplet
'''
#initialise the algorithm
lines = []
lineNum = 0
maxW = widths[lineNum]
i = -1
l = len(frags)
lim = start = 0
while 1:
#find a non whitespace character
while i<l:
while start<lim and text[start]==' ': start += 1
if start==lim:
i += 1
if i==l: break
start = 0
f = frags[i]
text = f.text
lim = len(text)
else:
break # we found one
if start==lim: break #if we didn't find one we are done
#start of a line
g = (None,None,None)
line = []
cLen = 0
nSpaces = 0
while cLen<maxW:
j = text.find(' ',start)
if j<0: j==lim
w = stringWidth(text[start:j],f.fontName,f.fontSize)
cLen += w
if cLen>maxW and line!=[]:
cLen = cLen-w
#this is the end of the line
while g.text[lim]==' ':
lim = lim - 1
nSpaces = nSpaces-1
break
if j<0: j = lim
if g[0] is f: g[2] = j #extend
else:
g = (f,start,j)
line.append(g)
if j==lim:
i += 1
def _old_do_line(tx, x1, y1, x2, y2):
tx._canvas.line(x1, y1, x2, y2)
def _do_line(tx, x1, y1, x2, y2):
olw = tx._canvas._lineWidth
nlw = tx._underlineProportion*tx._fontsize
if nlw!=olw:
tx._canvas.setLineWidth(nlw)
tx._canvas.line(x1, y1, x2, y2)
tx._canvas.setLineWidth(olw)
else:
tx._canvas.line(x1, y1, x2, y2)
def _do_under_line(i, t_off, ws, tx, lm=-0.125):
y = tx.XtraState.cur_y - i*tx.XtraState.style.leading + lm*tx.XtraState.f.fontSize
textlen = tx._canvas.stringWidth(' '.join(tx.XtraState.lines[i][1]), tx._fontname, tx._fontsize)
tx._do_line(t_off, y, t_off+textlen, y)
_scheme_re = re.compile('^[a-zA-Z][-+a-zA-Z0-9]+$')
def _doLink(tx,link,rect):
parts = link.split(':',1)
scheme = len(parts)==2 and parts[0].lower() or ''
if _scheme_re.match(scheme) and scheme!='document':
kind=scheme.lower()=='pdf' and 'GoToR' or 'URI'
if kind=='GoToR': link = parts[1]
tx._canvas.linkURL(link, rect, relative=1, kind=kind)
else:
if link[0]=='#':
link = link[1:]
scheme=''
tx._canvas.linkRect("", scheme!='document' and link or parts[1], rect, relative=1)
def _do_link_line(i, t_off, ws, tx):
xs = tx.XtraState
leading = xs.style.leading
y = xs.cur_y - i*leading - xs.f.fontSize/8.0 # 8.0 factor copied from para.py
text = ' '.join(xs.lines[i][1])
textlen = tx._canvas.stringWidth(text, tx._fontname, tx._fontsize)
_doLink(tx, xs.link, (t_off, y, t_off+textlen, y+leading))
def _do_post_text(tx):
xs = tx.XtraState
leading = xs.style.leading
autoLeading = xs.autoLeading
f = xs.f
if autoLeading=='max':
leading = max(leading,1.2*f.fontSize)
elif autoLeading=='min':
leading = 1.2*f.fontSize
ff = 0.125*f.fontSize
y0 = xs.cur_y
y = y0 - ff
csc = None
for x1,x2,c in xs.underlines:
if c!=csc:
tx._canvas.setStrokeColor(c)
csc = c
tx._do_line(x1, y, x2, y)
xs.underlines = []
xs.underline=0
xs.underlineColor=None
ys = y0 + 2*ff
for x1,x2,c in xs.strikes:
if c!=csc:
tx._canvas.setStrokeColor(c)
csc = c
tx._do_line(x1, ys, x2, ys)
xs.strikes = []
xs.strike=0
xs.strikeColor=None
yl = y0 + f.fontSize
ydesc = yl - leading
for x1,x2,link,c in xs.links:
if platypus_link_underline:
if c!=csc:
tx._canvas.setStrokeColor(c)
csc = c
tx._do_line(x1, y, x2, y)
_doLink(tx, link, (x1, ydesc, x2, yl))
xs.links = []
xs.link=None
xs.linkColor=None
for x1,x2,c in xs.backColors:
tx._canvas.setFillColor(c)
tx._canvas.rect(x1,ydesc,x2-x1,leading,stroke=0,fill=1)
xs.backColors=[]
xs.backColor=None
xs.cur_y -= leading
def textTransformFrags(frags,style):
tt = style.textTransform
if tt:
tt=tt.lower()
if tt=='lowercase':
tt = unicodeT.lower
elif tt=='uppercase':
tt = unicodeT.upper
elif tt=='capitalize':
tt = unicodeT.title
elif tt=='none':
return
else:
raise ValueError('ParaStyle.textTransform value %r is invalid' % style.textTransform)
n = len(frags)
if n==1:
#single fragment the easy case
frags[0].text = tt(frags[0].text)
elif tt is unicodeT.title:
pb = True
for f in frags:
u = f.text
if not u: continue
if u.startswith(u' ') or pb:
u = tt(u)
else:
i = u.find(u' ')
if i>=0:
u = u[:i]+tt(u[i:])
pb = u.endswith(u' ')
f.text = u
else:
for f in frags:
u = f.text
if not u: continue
f.text = tt(u)
class cjkU(unicodeT):
'''simple class to hold the frag corresponding to a str'''
def __new__(cls,value,frag,encoding):
self = unicodeT.__new__(cls,value)
self._frag = frag
if hasattr(frag,'cbDefn'):
w = getattr(frag.cbDefn,'width',0)
self._width = w
else:
self._width = stringWidth(value,frag.fontName,frag.fontSize)
return self
frag = property(lambda self: self._frag)
width = property(lambda self: self._width)
def makeCJKParaLine(U,maxWidth,widthUsed,extraSpace,lineBreak,calcBounds):
words = []
CW = []
f0 = FragLine()
maxSize = maxAscent = minDescent = 0
for u in U:
f = u.frag
fontSize = f.fontSize
if calcBounds:
cbDefn = getattr(f,'cbDefn',None)
if getattr(cbDefn,'width',0):
descent, ascent = imgVRange(imgNormV(cbDefn.height,fontSize),cbDefn.valign,fontSize)
else:
ascent, descent = getAscentDescent(f.fontName,fontSize)
else:
ascent, descent = getAscentDescent(f.fontName,fontSize)
maxSize = max(maxSize,fontSize)
maxAscent = max(maxAscent,ascent)
minDescent = min(minDescent,descent)
if not sameFrag(f0,f):
f0=f0.clone()
f0.text = u''.join(CW)
words.append(f0)
CW = []
f0 = f
CW.append(u)
if CW:
f0=f0.clone()
f0.text = u''.join(CW)
words.append(f0)
return FragLine(kind=1,extraSpace=extraSpace,wordCount=1,words=words[1:],fontSize=maxSize,ascent=maxAscent,descent=minDescent,maxWidth=maxWidth,currentWidth=widthUsed,lineBreak=lineBreak)
def cjkFragSplit(frags, maxWidths, calcBounds, encoding='utf8'):
'''This attempts to be wordSplit for frags using the dumb algorithm'''
U = [] #get a list of single glyphs with their widths etc etc
for f in frags:
text = f.text
if isBytes(text):
text = text.decode(encoding)
if text:
U.extend([cjkU(t,f,encoding) for t in text])
else:
U.append(cjkU(text,f,encoding))
lines = []
i = widthUsed = lineStartPos = 0
maxWidth = maxWidths[0]
nU = len(U)
while i<nU:
u = U[i]
i += 1
w = u.width
if hasattr(w,'normalizedValue'):
w._normalizer = maxWidth
w = w.normalizedValue(None)
widthUsed += w
lineBreak = hasattr(u.frag,'lineBreak')
endLine = (widthUsed>maxWidth + _FUZZ and widthUsed>0) or lineBreak
if endLine:
extraSpace = maxWidth - widthUsed
if not lineBreak:
if ord(u)<0x3000:
# we appear to be inside a non-Asian script section.
# (this is a very crude test but quick to compute).
# This is likely to be quite rare so the speed of the
# code below is hopefully not a big issue. The main
# situation requiring this is that a document title
# with an english product name in it got cut.
# we count back and look for
# - a space-like character
# - reversion to Kanji (which would be a good split point)
# - in the worst case, roughly half way back along the line
limitCheck = (lineStartPos+i)>>1 #(arbitrary taste issue)
for j in xrange(i-1,limitCheck,-1):
uj = U[j]
if uj and category(uj)=='Zs' or ord(uj)>=0x3000:
k = j+1
if k<i:
j = k+1
extraSpace += sum(U[ii].width for ii in xrange(j,i))
w = U[k].width
u = U[k]
i = j
break
#we are pushing this character back, but
#the most important of the Japanese typography rules
#if this character cannot start a line, wrap it up to this line so it hangs
#in the right margin. We won't do two or more though - that's unlikely and
#would result in growing ugliness.
#and increase the extra space
#bug fix contributed by Alexander Vasilenko <alexs.vasilenko@gmail.com>
if u not in ALL_CANNOT_START and i>lineStartPos+1:
#otherwise we need to push the character back
#the i>lineStart+1 condition ensures progress
i -= 1
extraSpace += w
lines.append(makeCJKParaLine(U[lineStartPos:i],maxWidth,widthUsed,extraSpace,lineBreak,calcBounds))
try:
maxWidth = maxWidths[len(lines)]
except IndexError:
maxWidth = maxWidths[-1] # use the last one
lineStartPos = i
widthUsed = 0
#any characters left?
if widthUsed > 0:
lines.append(makeCJKParaLine(U[lineStartPos:],maxWidth,widthUsed,maxWidth-widthUsed,False,calcBounds))
return ParaLines(kind=1,lines=lines)
class Paragraph(Flowable):
""" Paragraph(text, style, bulletText=None, caseSensitive=1)
text a string of stuff to go into the paragraph.
style is a style definition as in reportlab.lib.styles.
bulletText is an optional bullet defintion.
caseSensitive set this to 0 if you want the markup tags and their attributes to be case-insensitive.
This class is a flowable that can format a block of text
into a paragraph with a given style.
The paragraph Text can contain XML-like markup including the tags:
<b> ... </b> - bold
<i> ... </i> - italics
<u> ... </u> - underline
<strike> ... </strike> - strike through
<super> ... </super> - superscript
<sub> ... </sub> - subscript
<font name=fontfamily/fontname color=colorname size=float>
<span name=fontfamily/fontname color=colorname backcolor=colorname size=float style=stylename>
<onDraw name=callable label="a label"/>
<index [name="callablecanvasattribute"] label="a label"/>
<link>link text</link>
attributes of links
size/fontSize=num
name/face/fontName=name
fg/textColor/color=color
backcolor/backColor/bgcolor=color
dest/destination/target/href/link=target
<a>anchor text</a>
attributes of anchors
fontSize=num
fontName=name
fg/textColor/color=color
backcolor/backColor/bgcolor=color
href=href
<a name="anchorpoint"/>
<unichar name="unicode character name"/>
<unichar value="unicode code point"/>
<img src="path" width="1in" height="1in" valign="bottom"/>
width="w%" --> fontSize*w/100 idea from Roberto Alsina
height="h%" --> linewidth*h/100 <ralsina@netmanagers.com.ar>
The whole may be surrounded by <para> </para> tags
The <b> and <i> tags will work for the built-in fonts (Helvetica
/Times / Courier). For other fonts you need to register a family
of 4 fonts using reportlab.pdfbase.pdfmetrics.registerFont; then
use the addMapping function to tell the library that these 4 fonts
form a family e.g.
from reportlab.lib.fonts import addMapping
addMapping('Vera', 0, 0, 'Vera') #normal
addMapping('Vera', 0, 1, 'Vera-Italic') #italic
addMapping('Vera', 1, 0, 'Vera-Bold') #bold
addMapping('Vera', 1, 1, 'Vera-BoldItalic') #italic and bold
It will also be able to handle any MathML specified Greek characters.
"""
def __init__(self, text, style, bulletText = None, frags=None, caseSensitive=1, encoding='utf8'):
self.caseSensitive = caseSensitive
self.encoding = encoding
self._setup(text, style, bulletText or getattr(style,'bulletText',None), frags, cleanBlockQuotedText)
def __repr__(self):
n = self.__class__.__name__
L = [n+"("]
keys = list(self.__dict__.keys())
for k in keys:
L.append('%s: %s' % (repr(k).replace("\n", " ").replace(" "," "),repr(getattr(self, k)).replace("\n", " ").replace(" "," ")))
L.append(") #"+n)
return '\n'.join(L)
def _setup(self, text, style, bulletText, frags, cleaner):
#This used to be a global parser to save overhead.
#In the interests of thread safety it is being instantiated per paragraph.
#On the next release, we'll replace with a cElementTree parser
if frags is None:
text = cleaner(text)
_parser = ParaParser()
_parser.caseSensitive = self.caseSensitive
style, frags, bulletTextFrags = _parser.parse(text,style)
if frags is None:
raise ValueError("xml parser error (%s) in paragraph beginning\n'%s'"\
% (_parser.errors[0],text[:min(30,len(text))]))
textTransformFrags(frags,style)
if bulletTextFrags: bulletText = bulletTextFrags
#AR hack
self.text = text
self.frags = frags
self.style = style
self.bulletText = bulletText
self.debug = 0 #turn this on to see a pretty one with all the margins etc.
def wrap(self, availWidth, availHeight):
# work out widths array for breaking
self.width = availWidth
style = self.style
leftIndent = style.leftIndent
first_line_width = availWidth - (leftIndent+style.firstLineIndent) - style.rightIndent
later_widths = availWidth - leftIndent - style.rightIndent
self._wrapWidths = [first_line_width, later_widths]
if style.wordWrap == 'CJK':
#use Asian text wrap algorithm to break characters
blPara = self.breakLinesCJK(self._wrapWidths)
else:
blPara = self.breakLines(self._wrapWidths)
self.blPara = blPara
autoLeading = getattr(self,'autoLeading',getattr(style,'autoLeading',''))
leading = style.leading
if blPara.kind==1:
if autoLeading not in ('','off'):
height = 0
if autoLeading=='max':
for l in blPara.lines:
height += max(l.ascent-l.descent,leading)
elif autoLeading=='min':
for l in blPara.lines:
height += l.ascent - l.descent
else:
raise ValueError('invalid autoLeading value %r' % autoLeading)
else:
height = len(blPara.lines) * leading
else:
if autoLeading=='max':
leading = max(leading,blPara.ascent-blPara.descent)
elif autoLeading=='min':
leading = blPara.ascent-blPara.descent
height = len(blPara.lines) * leading
self.height = height
return self.width, height
def minWidth(self):
'Attempt to determine a minimum sensible width'
frags = self.frags
nFrags= len(frags)
if not nFrags: return 0
if nFrags==1:
f = frags[0]
fS = f.fontSize
fN = f.fontName
words = hasattr(f,'text') and split(f.text, ' ') or f.words
func = lambda w, fS=fS, fN=fN: stringWidth(w,fN,fS)
else:
words = _getFragWords(frags)
func = lambda x: x[0]
return max(list(map(func,words)))
def _get_split_blParaFunc(self):
return self.blPara.kind==0 and _split_blParaSimple or _split_blParaHard
def split(self,availWidth, availHeight):
if len(self.frags)<=0: return []
#the split information is all inside self.blPara
if not hasattr(self,'blPara'):
self.wrap(availWidth,availHeight)
blPara = self.blPara
style = self.style
autoLeading = getattr(self,'autoLeading',getattr(style,'autoLeading',''))
leading = style.leading
lines = blPara.lines
if blPara.kind==1 and autoLeading not in ('','off'):
s = height = 0
if autoLeading=='max':
for i,l in enumerate(blPara.lines):
h = max(l.ascent-l.descent,leading)
n = height+h
if n>availHeight+1e-8:
break
height = n
s = i+1
elif autoLeading=='min':
for i,l in enumerate(blPara.lines):
n = height+l.ascent-l.descent
if n>availHeight+1e-8:
break
height = n
s = i+1
else:
raise ValueError('invalid autoLeading value %r' % autoLeading)
else:
l = leading
if autoLeading=='max':
l = max(leading,1.2*style.fontSize)
elif autoLeading=='min':
l = 1.2*style.fontSize
s = int(availHeight/(l*1.0))
height = s*l
allowOrphans = getattr(self,'allowOrphans',getattr(style,'allowOrphans',0))
if (not allowOrphans and s<=1) or s==0: #orphan or not enough room
del self.blPara
return []
n = len(lines)
allowWidows = getattr(self,'allowWidows',getattr(style,'allowWidows',1))
if n<=s:
return [self]
if not allowWidows:
if n==s+1: #widow?
if (allowOrphans and n==3) or n>3:
s -= 1 #give the widow some company
else:
del self.blPara #no room for adjustment; force the whole para onwards
return []
func = self._get_split_blParaFunc()
if style.endDots:
style1 = deepcopy(style)
style1.endDots = None
else:
style1 = style
P1=self.__class__(None,style1,bulletText=self.bulletText,frags=func(blPara,0,s))
#this is a major hack
P1.blPara = ParaLines(kind=1,lines=blPara.lines[0:s],aH=availHeight,aW=availWidth)
P1._JustifyLast = 1
P1._splitpara = 1
P1.height = height
P1.width = availWidth
if style.firstLineIndent != 0:
style = deepcopy(style)
style.firstLineIndent = 0
P2=self.__class__(None,style,bulletText=None,frags=func(blPara,s,n))
#propagate attributes that might be on self; suggestion from Dirk Holtwick
for a in ('autoLeading', #possible attributes that might be directly on self.
):
if hasattr(self,a):
setattr(P1,a,getattr(self,a))
setattr(P2,a,getattr(self,a))
return [P1,P2]
def draw(self):
#call another method for historical reasons. Besides, I
#suspect I will be playing with alternate drawing routines
#so not doing it here makes it easier to switch.
self.drawPara(self.debug)
def breakLines(self, width):
"""
Returns a broken line structure. There are two cases
A) For the simple case of a single formatting input fragment the output is
A fragment specifier with
- kind = 0
- fontName, fontSize, leading, textColor
- lines= A list of lines
Each line has two items.
1. unused width in points
2. word list
B) When there is more than one input formatting fragment the output is
A fragment specifier with
- kind = 1
- lines= A list of fragments each having fields
- extraspace (needed for justified)
- fontSize
- words=word list
each word is itself a fragment with
various settings
This structure can be used to easily draw paragraphs with the various alignments.
You can supply either a single width or a list of widths; the latter will have its
last item repeated until necessary. A 2-element list is useful when there is a
different first line indent; a longer list could be created to facilitate custom wraps
around irregular objects."""
if not isinstance(width,(tuple,list)): maxWidths = [width]
else: maxWidths = width
lines = []
self.height = lineno = 0
maxlineno = len(maxWidths)-1
style = self.style
splitLongWords = style.splitLongWords
self._splitLongWordCount = 0
#for bullets, work out width and ensure we wrap the right amount onto line one
_handleBulletWidth(self.bulletText,style,maxWidths)
maxWidth = maxWidths[0]
autoLeading = getattr(self,'autoLeading',getattr(style,'autoLeading',''))
calcBounds = autoLeading not in ('','off')
frags = self.frags
nFrags= len(frags)
if nFrags==1 and not (style.endDots or hasattr(frags[0],'cbDefn') or hasattr(frags[0],'backColor')):
f = frags[0]
fontSize = f.fontSize
fontName = f.fontName
ascent, descent = getAscentDescent(fontName,fontSize)
if hasattr(f,'text'):
text = strip(f.text)
if not text:
return f.clone(kind=0, lines=[],ascent=ascent,descent=descent,fontSize=fontSize)
else:
words = split(text)
else:
words = f.words[:]
for w in words:
if strip(w): break
else:
return f.clone(kind=0, lines=[],ascent=ascent,descent=descent,fontSize=fontSize)
spaceWidth = stringWidth(' ', fontName, fontSize, self.encoding)
cLine = []
currentWidth = -spaceWidth # hack to get around extra space for word 1
while words:
word = words.pop(0)
#this underscores my feeling that Unicode throughout would be easier!
wordWidth = stringWidth(word, fontName, fontSize, self.encoding)
newWidth = currentWidth + spaceWidth + wordWidth
if newWidth>maxWidth:
nmw = min(lineno,maxlineno)
if wordWidth>max(maxWidths[nmw:nmw+1]) and not isinstance(word,_SplitText) and splitLongWords:
#a long word
words[0:0] = _splitWord(word,maxWidth-spaceWidth-currentWidth,maxWidths,lineno,fontName,fontSize,self.encoding)
self._splitLongWordCount += 1
continue
if newWidth <= maxWidth or not len(cLine):
# fit one more on this line
cLine.append(word)
currentWidth = newWidth
else:
if currentWidth > self.width: self.width = currentWidth
#end of line
lines.append((maxWidth - currentWidth, cLine))
cLine = [word]
currentWidth = wordWidth
lineno += 1
maxWidth = maxWidths[min(maxlineno,lineno)]
#deal with any leftovers on the final line
if cLine!=[]:
if currentWidth>self.width: self.width = currentWidth
lines.append((maxWidth - currentWidth, cLine))
return f.clone(kind=0, lines=lines,ascent=ascent,descent=descent,fontSize=fontSize)
elif nFrags<=0:
return ParaLines(kind=0, fontSize=style.fontSize, fontName=style.fontName,
textColor=style.textColor, ascent=style.fontSize,descent=-0.2*style.fontSize,
lines=[])
else:
if hasattr(self,'blPara') and getattr(self,'_splitpara',0):
#NB this is an utter hack that awaits the proper information
#preserving splitting algorithm
return self.blPara
n = 0
njlbv = not style.justifyBreaks
words = []
_words = _getFragWords(frags,maxWidth)
while _words:
w = _words.pop(0)
f=w[-1][0]
fontName = f.fontName
fontSize = f.fontSize
spaceWidth = stringWidth(' ',fontName, fontSize)
if not words:
currentWidth = -spaceWidth # hack to get around extra space for word 1
maxSize = fontSize
maxAscent, minDescent = getAscentDescent(fontName,fontSize)
wordWidth = w[0]
f = w[1][0]
if wordWidth>0:
newWidth = currentWidth + spaceWidth + wordWidth
else:
newWidth = currentWidth
#test to see if this frag is a line break. If it is we will only act on it
#if the current width is non-negative or the previous thing was a deliberate lineBreak
lineBreak = hasattr(f,'lineBreak')
if not lineBreak and newWidth>maxWidth and not isinstance(w,_SplitList) and splitLongWords:
nmw = min(lineno,maxlineno)
if wordWidth>max(maxWidths[nmw:nmw+1]):
#a long word
_words[0:0] = _splitFragWord(w,maxWidth-spaceWidth-currentWidth,maxWidths,lineno)
self._splitLongWordCount += 1
continue
endLine = (newWidth>maxWidth and n>0) or lineBreak
if not endLine:
if lineBreak: continue #throw it away
nText = w[1][1]
if nText: n += 1
fontSize = f.fontSize
if calcBounds:
cbDefn = getattr(f,'cbDefn',None)
if getattr(cbDefn,'width',0):
descent,ascent = imgVRange(imgNormV(cbDefn.height,fontSize),cbDefn.valign,fontSize)
else:
ascent, descent = getAscentDescent(f.fontName,fontSize)
else:
ascent, descent = getAscentDescent(f.fontName,fontSize)
maxSize = max(maxSize,fontSize)
maxAscent = max(maxAscent,ascent)
minDescent = min(minDescent,descent)
if not words:
g = f.clone()
words = [g]
g.text = nText
elif not sameFrag(g,f):
if currentWidth>0 and ((nText!='' and nText[0]!=' ') or hasattr(f,'cbDefn')):
if hasattr(g,'cbDefn'):
i = len(words)-1
while i>=0:
wi = words[i]
cbDefn = getattr(wi,'cbDefn',None)
if cbDefn:
if not getattr(cbDefn,'width',0):
i -= 1
continue
if not wi.text.endswith(' '):
wi.text += ' '
break
else:
if not g.text.endswith(' '):
g.text += ' '
g = f.clone()
words.append(g)
g.text = nText
else:
if nText and nText[0]!=' ':
g.text += ' ' + nText
ni = 0
for i in w[2:]:
g = i[0].clone()
g.text=i[1]
if g.text: ni = 1
words.append(g)
fontSize = g.fontSize
if calcBounds:
cbDefn = getattr(g,'cbDefn',None)
if getattr(cbDefn,'width',0):
descent,ascent = imgVRange(imgNormV(cbDefn.height,fontSize),cbDefn.valign,fontSize)
else:
ascent, descent = getAscentDescent(g.fontName,fontSize)
else:
ascent, descent = getAscentDescent(g.fontName,fontSize)
maxSize = max(maxSize,fontSize)
maxAscent = max(maxAscent,ascent)
minDescent = min(minDescent,descent)
if not nText and ni:
#one bit at least of the word was real
n+=1
currentWidth = newWidth
else: #either it won't fit, or it's a lineBreak tag
if lineBreak:
g = f.clone()
#del g.lineBreak
words.append(g)
if currentWidth>self.width: self.width = currentWidth
#end of line
lines.append(FragLine(extraSpace=maxWidth-currentWidth, wordCount=n,
lineBreak=lineBreak and njlbv, words=words, fontSize=maxSize, ascent=maxAscent, descent=minDescent, maxWidth=maxWidth))
#start new line
lineno += 1
maxWidth = maxWidths[min(maxlineno,lineno)]
if lineBreak:
n = 0
words = []
continue
currentWidth = wordWidth
n = 1
g = f.clone()
maxSize = g.fontSize
if calcBounds:
cbDefn = getattr(g,'cbDefn',None)
if getattr(cbDefn,'width',0):
minDescent,maxAscent = imgVRange(imgNormV(cbDefn.height,fontSize),cbDefn.valign,maxSize)
else:
maxAscent, minDescent = getAscentDescent(g.fontName,maxSize)
else:
maxAscent, minDescent = getAscentDescent(g.fontName,maxSize)
words = [g]
g.text = w[1][1]
for i in w[2:]:
g = i[0].clone()
g.text=i[1]
words.append(g)
fontSize = g.fontSize
if calcBounds:
cbDefn = getattr(g,'cbDefn',None)
if getattr(cbDefn,'width',0):
descent,ascent = imgVRange(imgNormV(cbDefn.height,fontSize),cbDefn.valign,fontSize)
else:
ascent, descent = getAscentDescent(g.fontName,fontSize)
else:
ascent, descent = getAscentDescent(g.fontName,fontSize)
maxSize = max(maxSize,fontSize)
maxAscent = max(maxAscent,ascent)
minDescent = min(minDescent,descent)
#deal with any leftovers on the final line
if words!=[]:
if currentWidth>self.width: self.width = currentWidth
lines.append(ParaLines(extraSpace=(maxWidth - currentWidth),wordCount=n,lineBreak=False,
words=words, fontSize=maxSize,ascent=maxAscent,descent=minDescent,maxWidth=maxWidth))
return ParaLines(kind=1, lines=lines)
return lines
def breakLinesCJK(self, maxWidths):
"""Initially, the dumbest possible wrapping algorithm.
Cannot handle font variations."""
if not isinstance(maxWidths,(list,tuple)): maxWidths = [maxWidths]
style = self.style
self.height = 0
#for bullets, work out width and ensure we wrap the right amount onto line one
_handleBulletWidth(self.bulletText, style, maxWidths)
frags = self.frags
nFrags = len(frags)
if nFrags==1 and not hasattr(frags[0],'cbDefn') and not style.endDots:
f = frags[0]
if hasattr(self,'blPara') and getattr(self,'_splitpara',0):
return f.clone(kind=0, lines=self.blPara.lines)
#single frag case
lines = []
lineno = 0
if hasattr(f,'text'):
text = f.text
else:
text = ''.join(getattr(f,'words',[]))
from reportlab.lib.textsplit import wordSplit
lines = wordSplit(text, maxWidths, f.fontName, f.fontSize)
#the paragraph drawing routine assumes multiple frags per line, so we need an
#extra list like this
# [space, [text]]
#
wrappedLines = [(sp, [line]) for (sp, line) in lines]
return f.clone(kind=0, lines=wrappedLines, ascent=f.fontSize, descent=-0.2*f.fontSize)
elif nFrags<=0:
return ParaLines(kind=0, fontSize=style.fontSize, fontName=style.fontName,
textColor=style.textColor, lines=[],ascent=style.fontSize,descent=-0.2*style.fontSize)
#general case nFrags>1 or special
if hasattr(self,'blPara') and getattr(self,'_splitpara',0):
return self.blPara
autoLeading = getattr(self,'autoLeading',getattr(style,'autoLeading',''))
calcBounds = autoLeading not in ('','off')
return cjkFragSplit(frags, maxWidths, calcBounds)
def beginText(self, x, y):
return self.canv.beginText(x, y)
def drawPara(self,debug=0):
"""Draws a paragraph according to the given style.
Returns the final y position at the bottom. Not safe for
paragraphs without spaces e.g. Japanese; wrapping
algorithm will go infinite."""
#stash the key facts locally for speed
canvas = self.canv
style = self.style
blPara = self.blPara
lines = blPara.lines
leading = style.leading
autoLeading = getattr(self,'autoLeading',getattr(style,'autoLeading',''))
#work out the origin for line 1
leftIndent = style.leftIndent
cur_x = leftIndent
if debug:
bw = 0.5
bc = Color(1,1,0)
bg = Color(0.9,0.9,0.9)
else:
bw = getattr(style,'borderWidth',None)
bc = getattr(style,'borderColor',None)
bg = style.backColor
#if has a background or border, draw it
if bg or (bc and bw):
canvas.saveState()
op = canvas.rect
kwds = dict(fill=0,stroke=0)
if bc and bw:
canvas.setStrokeColor(bc)
canvas.setLineWidth(bw)
kwds['stroke'] = 1
br = getattr(style,'borderRadius',0)
if br and not debug:
op = canvas.roundRect
kwds['radius'] = br
if bg:
canvas.setFillColor(bg)
kwds['fill'] = 1
bp = getattr(style,'borderPadding',0)
tbp, rbp, bbp, lbp = normalizeTRBL(bp)
op(leftIndent - lbp,
-bbp,
self.width - (leftIndent+style.rightIndent) + lbp+rbp,
self.height + tbp+bbp,
**kwds)
canvas.restoreState()
nLines = len(lines)
bulletText = self.bulletText
if nLines > 0:
_offsets = getattr(self,'_offsets',[0])
_offsets += (nLines-len(_offsets))*[_offsets[-1]]
canvas.saveState()
#canvas.addLiteral('%% %s.drawPara' % _className(self))
alignment = style.alignment
offset = style.firstLineIndent+_offsets[0]
lim = nLines-1
noJustifyLast = not getattr(self,'_JustifyLast',False)
jllwc = style.justifyLastLine
if blPara.kind==0:
if alignment == TA_LEFT:
dpl = _leftDrawParaLine
elif alignment == TA_CENTER:
dpl = _centerDrawParaLine
elif self.style.alignment == TA_RIGHT:
dpl = _rightDrawParaLine
elif self.style.alignment == TA_JUSTIFY:
dpl = _justifyDrawParaLine
f = blPara
if paraFontSizeHeightOffset:
cur_y = self.height - f.fontSize
else:
cur_y = self.height - getattr(f,'ascent',f.fontSize)
if bulletText:
offset = _drawBullet(canvas,offset,cur_y,bulletText,style,rtl=style.wordWrap=='RTL' and self._wrapWidths or False)
#set up the font etc.
canvas.setFillColor(f.textColor)
tx = self.beginText(cur_x, cur_y)
if style.underlineProportion:
tx._underlineProportion = style.underlineProportion
tx._do_line = _do_line
else:
tx._do_line = _old_do_line
tx._do_line = MethodType(tx._do_line,tx)
if autoLeading=='max':
leading = max(leading,blPara.ascent-blPara.descent)
elif autoLeading=='min':
leading = blPara.ascent-blPara.descent
# set the paragraph direction
tx.direction = self.style.wordWrap
#now the font for the rest of the paragraph
tx.setFont(f.fontName, f.fontSize, leading)
ws = lines[0][0]
words = lines[0][1]
lastLine = noJustifyLast and nLines==1
if lastLine and jllwc and len(words)>jllwc:
lastLine=False
t_off = dpl( tx, offset, ws, words, lastLine)
if f.underline or f.link or f.strike or style.endDots:
xs = tx.XtraState = ABag()
xs.cur_y = cur_y
xs.f = f
xs.style = style
xs.lines = lines
xs.underlines=[]
xs.underlineColor=None
xs.strikes=[]
xs.strikeColor=None
xs.links=[]
xs.link=f.link
xs.textColor = f.textColor
xs.backColors = []
canvas.setStrokeColor(f.textColor)
dx = t_off+leftIndent
if dpl!=_justifyDrawParaLine: ws = 0
underline = f.underline or (f.link and platypus_link_underline)
strike = f.strike
link = f.link
if underline: _do_under_line(0, dx, ws, tx)
if strike: _do_under_line(0, dx, ws, tx, lm=0.125)
if link: _do_link_line(0, dx, ws, tx)
if lastLine and style.endDots and dpl!=_rightDrawParaLine: _do_dots(0, dx, ws, xs, tx, dpl)
#now the middle of the paragraph, aligned with the left margin which is our origin.
for i in xrange(1, nLines):
ws = lines[i][0]
words = lines[i][1]
lastLine = noJustifyLast and i==lim
if lastLine and jllwc and len(words)>jllwc:
lastLine=False
t_off = dpl( tx, _offsets[i], ws, words, lastLine)
dx = t_off+leftIndent
if dpl!=_justifyDrawParaLine: ws = 0
if underline: _do_under_line(i, dx, ws, tx)
if strike: _do_under_line(i, dx, ws, tx, lm=0.125)
if link: _do_link_line(i, dx, ws, tx)
if lastLine and style.endDots and dpl!=_rightDrawParaLine: _do_dots(i, dx, ws, xs, tx, dpl)
else:
for i in xrange(1, nLines):
words = lines[i][1]
lastLine = noJustifyLast and i==lim
if lastLine and jllwc and len(words)>jllwc:
lastLine=False
dpl( tx, _offsets[i], lines[i][0], words, lastLine)
else:
if self.style.wordWrap == 'RTL':
for line in lines:
line.words = line.words[::-1]
f = lines[0]
if paraFontSizeHeightOffset:
cur_y = self.height - f.fontSize
else:
cur_y = self.height - getattr(f,'ascent',f.fontSize)
# default?
dpl = _leftDrawParaLineX
if bulletText:
oo = offset
offset = _drawBullet(canvas,offset,cur_y,bulletText,style, rtl=style.wordWrap=='RTL' and self._wrapWidths or False)
if alignment == TA_LEFT:
dpl = _leftDrawParaLineX
elif alignment == TA_CENTER:
dpl = _centerDrawParaLineX
elif self.style.alignment == TA_RIGHT:
dpl = _rightDrawParaLineX
elif self.style.alignment == TA_JUSTIFY:
dpl = _justifyDrawParaLineX
else:
raise ValueError("bad align %s" % repr(alignment))
#set up the font etc.
tx = self.beginText(cur_x, cur_y)
if style.underlineProportion:
tx._underlineProportion = style.underlineProportion
tx._do_line = _do_line
else:
tx._do_line = _old_do_line
tx._do_line = MethodType(tx._do_line,tx)
# set the paragraph direction
tx.direction = self.style.wordWrap
xs = tx.XtraState=ABag()
xs.textColor=None
xs.backColor=None
xs.rise=0
xs.underline=0
xs.underlines=[]
xs.underlineColor=None
xs.strike=0
xs.strikes=[]
xs.strikeColor=None
xs.backColors=[]
xs.links=[]
xs.link=None
xs.leading = style.leading
xs.leftIndent = leftIndent
tx._leading = None
tx._olb = None
xs.cur_y = cur_y
xs.f = f
xs.style = style
xs.autoLeading = autoLeading
tx._fontname,tx._fontsize = None, None
line = lines[0]
lastLine = noJustifyLast and nLines==1
if lastLine and jllwc and line.wordCount>jllwc:
lastLine=False
dpl( tx, offset, line, lastLine)
_do_post_text(tx)
#now the middle of the paragraph, aligned with the left margin which is our origin.
for i in xrange(1, nLines):
line = lines[i]
lastLine = noJustifyLast and i==lim
if lastLine and jllwc and line.wordCount>jllwc:
lastLine=False
dpl( tx, _offsets[i], line, lastLine)
_do_post_text(tx)
canvas.drawText(tx)
canvas.restoreState()
def getPlainText(self,identify=None):
"""Convenience function for templates which want access
to the raw text, without XML tags. """
frags = getattr(self,'frags',None)
if frags:
plains = []
for frag in frags:
if hasattr(frag, 'text'):
plains.append(frag.text)
return ''.join(plains)
elif identify:
text = getattr(self,'text',None)
if text is None: text = repr(self)
return text
else:
return ''
def getActualLineWidths0(self):
"""Convenience function; tells you how wide each line
actually is. For justified styles, this will be
the same as the wrap width; for others it might be
useful for seeing if paragraphs will fit in spaces."""
assert hasattr(self, 'width'), "Cannot call this method before wrap()"
if self.blPara.kind:
func = lambda frag, w=self.width: w - frag.extraSpace
else:
func = lambda frag, w=self.width: w - frag[0]
return list(map(func,self.blPara.lines))
if __name__=='__main__': #NORUNTESTS
def dumpParagraphLines(P):
print('dumpParagraphLines(<Paragraph @ %d>)' % id(P))
lines = P.blPara.lines
outw = sys.stdout.write
for l,line in enumerate(lines):
line = lines[l]
if hasattr(line,'words'):
words = line.words
else:
words = line[1]
nwords = len(words)
outw('line%d: %d(%s)\n ' % (l,nwords,str(getattr(line,'wordCount','Unknown'))))
for w in xrange(nwords):
outw(" %d:'%s'"%(w,getattr(words[w],'text',words[w])))
print()
def fragDump(w):
R= ["'%s'" % w[1]]
for a in ('fontName', 'fontSize', 'textColor', 'rise', 'underline', 'strike', 'link', 'cbDefn','lineBreak'):
if hasattr(w[0],a):
R.append('%s=%r' % (a,getattr(w[0],a)))
return ', '.join(R)
def dumpParagraphFrags(P):
print('dumpParagraphFrags(<Paragraph @ %d>) minWidth() = %.2f' % (id(P), P.minWidth()))
frags = P.frags
n =len(frags)
for l in xrange(n):
print("frag%d: '%s' %s" % (l, frags[l].text,' '.join(['%s=%s' % (k,getattr(frags[l],k)) for k in frags[l].__dict__ if k!=text])))
outw = sys.stdout.write
l = 0
cum = 0
for W in _getFragWords(frags,360):
cum += W[0]
outw("fragword%d: cum=%3d size=%d" % (l, cum, W[0]))
for w in W[1:]:
outw(' (%s)' % fragDump(w))
print()
l += 1
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.units import cm
import sys
TESTS = sys.argv[1:]
if TESTS==[]: TESTS=['4']
def flagged(i,TESTS=TESTS):
return 'all' in TESTS or '*' in TESTS or str(i) in TESTS
styleSheet = getSampleStyleSheet()
B = styleSheet['BodyText']
style = ParagraphStyle("discussiontext", parent=B)
style.fontName= 'Helvetica'
if flagged(1):
text='''The <font name=courier color=green>CMYK</font> or subtractive method follows the way a printer
mixes three pigments (cyan, magenta, and yellow) to form colors.
Because mixing chemicals is more difficult than combining light there
is a fourth parameter for darkness. For example a chemical
combination of the <font name=courier color=green>CMY</font> pigments generally never makes a perfect
black -- instead producing a muddy color -- so, to get black printers
don't use the <font name=courier color=green>CMY</font> pigments but use a direct black ink. Because
<font name=courier color=green>CMYK</font> maps more directly to the way printer hardware works it may
be the case that &| & | colors specified in <font name=courier color=green>CMYK</font> will provide better fidelity
and better control when printed.
'''
P=Paragraph(text,style)
dumpParagraphFrags(P)
aW, aH = 456.0, 42.8
w,h = P.wrap(aW, aH)
dumpParagraphLines(P)
S = P.split(aW,aH)
for s in S:
s.wrap(aW,aH)
dumpParagraphLines(s)
aH = 500
if flagged(2):
P=Paragraph("""Price<super><font color="red">*</font></super>""", styleSheet['Normal'])
dumpParagraphFrags(P)
w,h = P.wrap(24, 200)
dumpParagraphLines(P)
if flagged(3):
text = """Dieses Kapitel bietet eine schnelle <b><font color=red>Programme :: starten</font></b>
<onDraw name=myIndex label="Programme :: starten">
<b><font color=red>Eingabeaufforderung :: (>>>)</font></b>
<onDraw name=myIndex label="Eingabeaufforderung :: (>>>)">
<b><font color=red>>>> (Eingabeaufforderung)</font></b>
<onDraw name=myIndex label=">>> (Eingabeaufforderung)">
Einführung in Python <b><font color=red>Python :: Einführung</font></b>
<onDraw name=myIndex label="Python :: Einführung">.
Das Ziel ist, die grundlegenden Eigenschaften von Python darzustellen, ohne
sich zu sehr in speziellen Regeln oder Details zu verstricken. Dazu behandelt
dieses Kapitel kurz die wesentlichen Konzepte wie Variablen, Ausdrücke,
Kontrollfluss, Funktionen sowie Ein- und Ausgabe. Es erhebt nicht den Anspruch,
umfassend zu sein."""
P=Paragraph(text, styleSheet['Code'])
dumpParagraphFrags(P)
w,h = P.wrap(6*72, 9.7*72)
dumpParagraphLines(P)
if flagged(4):
text='''Die eingebaute Funktion <font name=Courier>range(i, j [, stride])</font><onDraw name=myIndex label="eingebaute Funktionen::range()"><onDraw name=myIndex label="range() (Funktion)"><onDraw name=myIndex label="Funktionen::range()"> erzeugt eine Liste von Ganzzahlen und füllt sie mit Werten <font name=Courier>k</font>, für die gilt: <font name=Courier>i <= k < j</font>. Man kann auch eine optionale Schrittweite angeben. Die eingebaute Funktion <font name=Courier>xrange()</font><onDraw name=myIndex label="eingebaute Funktionen::xrange()"><onDraw name=myIndex label="xrange() (Funktion)"><onDraw name=myIndex label="Funktionen::xrange()"> erfüllt einen ähnlichen Zweck, gibt aber eine unveränderliche Sequenz vom Typ <font name=Courier>XRangeType</font><onDraw name=myIndex label="XRangeType"> zurück. Anstatt alle Werte in der Liste abzuspeichern, berechnet diese Liste ihre Werte, wann immer sie angefordert werden. Das ist sehr viel speicherschonender, wenn mit sehr langen Listen von Ganzzahlen gearbeitet wird. <font name=Courier>XRangeType</font> kennt eine einzige Methode, <font name=Courier>s.tolist()</font><onDraw name=myIndex label="XRangeType::tolist() (Methode)"><onDraw name=myIndex label="s.tolist() (Methode)"><onDraw name=myIndex label="Methoden::s.tolist()">, die seine Werte in eine Liste umwandelt.'''
aW = 420
aH = 64.4
P=Paragraph(text, B)
dumpParagraphFrags(P)
w,h = P.wrap(aW,aH)
print('After initial wrap',w,h)
dumpParagraphLines(P)
S = P.split(aW,aH)
dumpParagraphFrags(S[0])
w0,h0 = S[0].wrap(aW,aH)
print('After split wrap',w0,h0)
dumpParagraphLines(S[0])
if flagged(5):
text = '<para> %s <![CDATA[</font></b>& %s < >]]></para>' % (chr(163),chr(163))
P=Paragraph(text, styleSheet['Code'])
dumpParagraphFrags(P)
w,h = P.wrap(6*72, 9.7*72)
dumpParagraphLines(P)
if flagged(6):
for text in ['''Here comes <FONT FACE="Helvetica" SIZE="14pt">Helvetica 14</FONT> with <STRONG>strong</STRONG> <EM>emphasis</EM>.''',
'''Here comes <font face="Helvetica" size="14pt">Helvetica 14</font> with <Strong>strong</Strong> <em>emphasis</em>.''',
'''Here comes <font face="Courier" size="3cm">Courier 3cm</font> and normal again.''',
]:
P=Paragraph(text, styleSheet['Normal'], caseSensitive=0)
dumpParagraphFrags(P)
w,h = P.wrap(6*72, 9.7*72)
dumpParagraphLines(P)
if flagged(7):
text = """<para align="CENTER" fontSize="24" leading="30"><b>Generated by:</b>Dilbert</para>"""
P=Paragraph(text, styleSheet['Code'])
dumpParagraphFrags(P)
w,h = P.wrap(6*72, 9.7*72)
dumpParagraphLines(P)
if flagged(8):
text ="""- bullet 0<br/>- bullet 1<br/>- bullet 2<br/>- bullet 3<br/>- bullet 4<br/>- bullet 5"""
P=Paragraph(text, styleSheet['Normal'])
dumpParagraphFrags(P)
w,h = P.wrap(6*72, 9.7*72)
dumpParagraphLines(P)
S = P.split(6*72,h/2.0)
print(len(S))
dumpParagraphLines(S[0])
dumpParagraphLines(S[1])
if flagged(9):
text="""Furthermore, the fundamental error of
regarding <img src="../docs/images/testimg.gif" width="3" height="7"/> functional notions as
categorial delimits a general
convention regarding the forms of the<br/>
grammar. I suggested that these results
would follow from the assumption that"""
P=Paragraph(text,ParagraphStyle('aaa',parent=styleSheet['Normal'],align=TA_JUSTIFY))
dumpParagraphFrags(P)
w,h = P.wrap(6*cm-12, 9.7*72)
dumpParagraphLines(P)
if flagged(10):
text="""a b c\xc2\xa0d e f"""
P=Paragraph(text,ParagraphStyle('aaa',parent=styleSheet['Normal'],align=TA_JUSTIFY))
dumpParagraphFrags(P)
w,h = P.wrap(6*cm-12, 9.7*72)
dumpParagraphLines(P)
if flagged(11):
text="""This page tests out a number of attributes of the <b>paraStyle</b><onDraw name="_indexAdd" label="paraStyle"/> tag.
This paragraph is in a style we have called "style1". It should be a normal <onDraw name="_indexAdd" label="normal"/> paragraph, set in Courier 12 pt.
It should be a normal<onDraw name="_indexAdd" label="normal"/> paragraph, set in Courier (not bold).
It should be a normal<onDraw name="_indexAdd" label="normal"/> paragraph, set in Courier 12 pt."""
P=Paragraph(text,style=ParagraphStyle('style1',fontName="Courier",fontSize=10))
dumpParagraphFrags(P)
w,h = P.wrap(6.27*72-12,10000)
dumpParagraphLines(P)
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