コード例 #1
0
    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."""

        self._width_max = 0
        if not isSeq(width): 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 = f.text.split('\n')
                for l in L:
                    currentWidth = stringWidth(l, fontName, fontSize)
                    if currentWidth > self._width_max:
                        self._width_max = currentWidth
                    requiredWidth = max(currentWidth, requiredWidth)
                    extraSpace = maxWidth - currentWidth
                    lines.append((extraSpace, l.split(' '), 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
                if currentWidth > self._width_max:
                    self._width_max = currentWidth
                lines.append(
                    ParaLines(extraSpace=extraSpace,
                              wordCount=n,
                              words=words,
                              fontSize=maxSize,
                              ascent=maxAscent,
                              descent=minDescent,
                              currentWidth=currentWidth,
                              preformatted=True))

            self.width = max(self.width, requiredWidth)
            return ParaLines(kind=1, lines=lines)

        return lines
コード例 #2
0
ファイル: xpreformatted.py プロジェクト: CometHale/lphw
    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 not isSeq(width): 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=f.text.split('\n')
                for l in L:
                    currentWidth = stringWidth(l,fontName,fontSize)
                    requiredWidth = max(currentWidth,requiredWidth)
                    extraSpace = maxWidth-currentWidth
                    lines.append((extraSpace,l.split(' '),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