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. a list of words
B) When there is more than one input formatting fragment the out put 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 type(width) != ListType: maxWidths = [width]
else: maxWidths = width
lines = []
lineno = 0
maxWidth = maxWidths[lineno]
style = self.style
fFontSize = float(style.fontSize)
requiredWidth = 0
#for bullets, work out width and ensure we wrap the right amount onto line one
_handleBulletWidth(self.bulletText, style, maxWidths)
self.height = 0
autoLeading = getattr(self, 'autoLeading',
getattr(style, 'autoLeading', ''))
calcBounds = autoLeading not in ('', 'off')
frags = self.frags
nFrags = len(frags)
if nFrags == 1:
f = frags[0]
if hasattr(f, 'text'):
fontSize = f.fontSize
fontName = f.fontName
ascent, descent = getAscentDescent(fontName, fontSize)
kind = 0
L = string.split(f.text, '\n')
for l in L:
currentWidth = stringWidth(l, fontName, fontSize)
requiredWidth = max(currentWidth, requiredWidth)
extraSpace = maxWidth - currentWidth
lines.append((extraSpace, string.split(l,
' '), currentWidth))
lineno = lineno + 1
maxWidth = lineno < len(
maxWidths) and maxWidths[lineno] or maxWidths[-1]
blPara = f.clone(kind=kind,
lines=lines,
ascent=ascent,
descent=descent,
fontSize=fontSize)
else:
kind = f.kind
lines = f.lines
for L in lines:
if kind == 0:
currentWidth = L[2]
else:
currentWidth = L.currentWidth
requiredWidth = max(currentWidth, requiredWidth)
blPara = f.clone(kind=kind, lines=lines)
self.width = max(self.width, requiredWidth)
return blPara
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:
for L in _getFragLines(frags):
currentWidth, n, w = _getFragWord(L, maxWidth)
f = w[0][0]
maxSize = f.fontSize
maxAscent, minDescent = getAscentDescent(f.fontName, maxSize)
words = [f.clone()]
words[-1].text = w[0][1]
for i in w[1:]:
f = i[0].clone()
f.text = i[1]
words.append(f)
fontSize = f.fontSize
fontName = f.fontName
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(
fontName, fontSize)
else:
ascent, descent = getAscentDescent(fontName, fontSize)
maxSize = max(maxSize, fontSize)
maxAscent = max(maxAscent, ascent)
minDescent = min(minDescent, descent)
lineno += 1
maxWidth = lineno < len(
maxWidths) and maxWidths[lineno] or maxWidths[-1]
requiredWidth = max(currentWidth, requiredWidth)
extraSpace = maxWidth - currentWidth
lines.append(
ParaLines(extraSpace=extraSpace,
wordCount=n,
words=words,
fontSize=maxSize,
ascent=maxAscent,
descent=minDescent,
currentWidth=currentWidth))
self.width = max(self.width, requiredWidth)
return ParaLines(kind=1, lines=lines)
return lines
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) a list of words
B) When there is more than one input formatting fragment the out put 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 type(width) <> ListType: maxWidths = [width]
else: maxWidths = width
lines = []
lineno = 0
maxWidth = maxWidths[lineno]
style = self.style
fFontSize = float(style.fontSize)
requiredWidth = 0
#for bullets, work out width and ensure we wrap the right amount onto line one
_handleBulletWidth(self.bulletText, style, maxWidths)
self.height = 0
frags = self.frags
nFrags = len(frags)
if nFrags == 1:
f = frags[0]
if hasattr(f, 'text'):
fontSize = f.fontSize
fontName = f.fontName
kind = 0
L = string.split(f.text, '\n')
for l in L:
currentWidth = stringWidth(l, fontName, fontSize)
requiredWidth = max(currentWidth, requiredWidth)
extraSpace = maxWidth - currentWidth
lines.append((extraSpace, string.split(l,
' '), currentWidth))
lineno = lineno + 1
maxWidth = lineno < len(
maxWidths) and maxWidths[lineno] or maxWidths[-1]
else:
kind = f.kind
lines = f.lines
for L in lines:
if kind == 0:
currentWidth = L[2]
else:
currentWidth = L.currentWidth
requiredWidth = max(currentWidth, requiredWidth)
self.width = max(self.width, requiredWidth)
return f.clone(kind=kind, lines=lines)
elif nFrags <= 0:
return ParaLines(kind=0,
fontSize=style.fontSize,
fontName=style.fontName,
textColor=style.textColor,
lines=[])
else:
for L in _getFragLines(frags):
maxSize = 0
currentWidth, n, w = _getFragWord(L)
f = w[0][0]
maxSize = max(maxSize, f.fontSize)
words = [f.clone()]
words[-1].text = w[0][1]
for i in w[1:]:
f = i[0].clone()
f.text = i[1]
words.append(f)
maxSize = max(maxSize, f.fontSize)
lineno = lineno + 1
maxWidth = lineno < len(
maxWidths) and maxWidths[lineno] or maxWidths[-1]
requiredWidth = max(currentWidth, requiredWidth)
extraSpace = maxWidth - currentWidth
lines.append(
ParaLines(extraSpace=extraSpace,
wordCount=n,
words=words,
fontSize=maxSize,
currentWidth=currentWidth))
self.width = max(self.width, requiredWidth)
return ParaLines(kind=1, lines=lines)
return lines