Module: PDF_Chinese

Defined in:
lib/chinese.rb

Overview

Chinese support ported by Brian Ollenberger from Oliver Plathey’s Chinese PDF support.

First added in 1.53b

This is currently totally untested. Please let me know if you run into any bugs.

Usage is as follows:

require ‘fpdf’ require ‘chinese’ pdf = FPDF.new pdf.extend(PDF_Chinese)

This allows it to be combined with other extensions, such as the bookmark module.

Constant Summary collapse

Big5_widths = 
{' '=>250,'!'=>250,'"'=>408,'#'=>668,'$'=>490,'%'=>875,'&'=>698,'\''=>250,
'('=>240,')'=>240,'*'=>417,'+'=>667,','=>250,'-'=>313,'.'=>250,'/'=>520,'0'=>500,'1'=>500,
'2'=>500,'3'=>500,'4'=>500,'5'=>500,'6'=>500,'7'=>500,'8'=>500,'9'=>500,':'=>250,';'=>250,
'<'=>667,'='=>667,'>'=>667,'?'=>396,'@'=>921,'A'=>677,'B'=>615,'C'=>719,'D'=>760,'E'=>625,
'F'=>552,'G'=>771,'H'=>802,'I'=>354,'J'=>354,'K'=>781,'L'=>604,'M'=>927,'N'=>750,'O'=>823,
'P'=>563,'Q'=>823,'R'=>729,'S'=>542,'T'=>698,'U'=>771,'V'=>729,'W'=>948,'X'=>771,'Y'=>677,
'Z'=>635,'['=>344,'\\'=>520,']'=>344,'^'=>469,'_'=>500,'`'=>250,'a'=>469,'b'=>521,'c'=>427,
'd'=>521,'e'=>438,'f'=>271,'g'=>469,'h'=>531,'i'=>250,'j'=>250,'k'=>458,'l'=>240,'m'=>802,
'n'=>531,'o'=>500,'p'=>521,'q'=>521,'r'=>365,'s'=>333,'t'=>292,'u'=>521,'v'=>458,'w'=>677,
'x'=>479,'y'=>458,'z'=>427,'{'=>480,'|'=>496,'}'=>480,'~'=>667}
GB_widths = 
{' '=>207,'!'=>270,'"'=>342,'#'=>467,'$'=>462,'%'=>797,'&'=>710,'\''=>239,
'('=>374,')'=>374,'*'=>423,'+'=>605,','=>238,'-'=>375,'.'=>238,'/'=>334,'0'=>462,'1'=>462,
'2'=>462,'3'=>462,'4'=>462,'5'=>462,'6'=>462,'7'=>462,'8'=>462,'9'=>462,':'=>238,';'=>238,
'<'=>605,'='=>605,'>'=>605,'?'=>344,'@'=>748,'A'=>684,'B'=>560,'C'=>695,'D'=>739,'E'=>563,
'F'=>511,'G'=>729,'H'=>793,'I'=>318,'J'=>312,'K'=>666,'L'=>526,'M'=>896,'N'=>758,'O'=>772,
'P'=>544,'Q'=>772,'R'=>628,'S'=>465,'T'=>607,'U'=>753,'V'=>711,'W'=>972,'X'=>647,'Y'=>620,
'Z'=>607,'['=>374,'\\'=>333,']'=>374,'^'=>606,'_'=>500,'`'=>239,'a'=>417,'b'=>503,'c'=>427,
'd'=>529,'e'=>415,'f'=>264,'g'=>444,'h'=>518,'i'=>241,'j'=>230,'k'=>495,'l'=>228,'m'=>793,
'n'=>527,'o'=>524,'p'=>524,'q'=>504,'r'=>338,'s'=>336,'t'=>277,'u'=>517,'v'=>450,'w'=>652,
'x'=>466,'y'=>452,'z'=>407,'{'=>370,'|'=>258,'}'=>370,'~'=>605}

Instance Method Summary collapse

Instance Method Details

#AddBig5Font(family = 'Big5', name = 'MSungStd-Light-Acro') ⇒ Object 



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# File 'lib/chinese.rb', line 59

def AddBig5Font(family='Big5',name='MSungStd-Light-Acro')
    # Add Big5 font with proportional Latin
    cw=Big5_widths
    cMap='ETenms-B5-H'
    registry={'ordering'=>'CNS1','supplement'=>0}
    AddCIDFonts(family,name,cw,cMap,registry)
end

#AddBig5hwFont(family = 'Big5-hw', name = 'MSungStd-Light-Acro') ⇒ Object 



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# File 'lib/chinese.rb', line 67

def AddBig5hwFont(family='Big5-hw',name='MSungStd-Light-Acro')
    # Add Big5 font with half-width Latin
    cw = {}
    32.upto(126) do |i|
        cw[i.chr]=500
    end
    cMap='ETen-B5-H'
    registry={'ordering'=>'CNS1','supplement'=>0}
    AddCIDFonts(family,name,cw,cMap,registry)
end

#AddCIDFont(family, style, name, cw, cMap, registry) ⇒ Object 



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# File 'lib/chinese.rb', line 41

def AddCIDFont(family,style,name,cw,cMap,registry)
    fontkey=family.downcase + style.upcase;
    unless @fonts[fontkey].nil?
        Error("Font already added: #{family} #{style}")
    end
    i=@fonts.length+1
    name.sub!(' ', '')
    @fonts[fontkey]={'i'=>i,'type'=>'Type0','name'=>name,'up'=>-130,
        'ut'=>40,'cw'=>cw,'CMap'=>cMap,'registry'=>registry}
end

#AddCIDFonts(family, name, cw, cMap, registry) ⇒ Object 



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# File 'lib/chinese.rb', line 52

def AddCIDFonts(family,name,cw,cMap,registry)
    AddCIDFont(family,'',name,cw,cMap,registry)
    AddCIDFont(family,'B',name+',Bold',cw,cMap,registry)
    AddCIDFont(family,'I',name+',Italic',cw,cMap,registry)
    AddCIDFont(family,'BI',name+',BoldItalic',cw,cMap,registry)
end

#AddGBFont(family = 'GB', name = 'STSongStd-Light-Acro') ⇒ Object 



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# File 'lib/chinese.rb', line 78

def AddGBFont(family='GB',name='STSongStd-Light-Acro')
    # Add GB font with proportional Latin
    cw=GB_widths
    cMap='GBKp-EUC-H'
    registry={'ordering'=>'GB1','supplement'=>2}
    AddCIDFonts(family,name,cw,cMap,registry)
end

#AddGBhwFont(family = 'GB-hw', name = 'STSongStd-Light-Acro') ⇒ Object 



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# File 'lib/chinese.rb', line 86

def AddGBhwFont(family='GB-hw',name='STSongStd-Light-Acro')
    # Add GB font with half-width Latin
    32.upto(126) do |i|
        cw[i.chr]=500
    end
    cMap='GBK-EUC-H'
    registry={'ordering'=>'GB1','supplement'=>2}
    AddCIDFonts(family,name,cw,cMap,registry)
end

#GetMBStringWidth(s) ⇒ Object 



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# File 'lib/chinese.rb', line 104

def GetMBStringWidth(s)
    # Multi-byte version of GetStringWidth()
    l=0
    cw=@CurrentFont['cw']
    nb=s.length
    i=0
    while i<nb
        c=s[i]
        if c.ord < 128
            l += cw[c]
            i += 1
        else
            l += 1000
            i += 2
        end
    end
    l*@FontSize/1000
end

#GetStringWidth(s) ⇒ Object 



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# File 'lib/chinese.rb', line 96

def GetStringWidth(s)
    if @CurrentFont['type']=='Type0'
        GetMBStringWidth(s)
    else
        super(s)
    end
end

#MBMultiCell(w, h, txt, border = 0, align = 'L', fill = 0) ⇒ Object 



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# File 'lib/chinese.rb', line 131

def MBMultiCell(w,h,txt,border=0,align='L',fill=0)
    # Multi-byte version of MultiCell()
    cw=@CurrentFont['cw']
    w=@w-@rMargin-@x if w==0
    wmax=(w-2*@cMargin)*1000/@FontSize
    txt.sub("\r", '')
    nb=s.length
    nb -= 1 if nb>0 and s[nb-1]=="\n"
    b=0
    if border
        if border==1
            border='LTRB'
            b='LRT'
            b2='LR'
        else
            b2=''
            b2+='L' unless border.index('L').nil?
            b2+='R' unless border.index('R').nil? 
            b = (border.index('T')) ? (b2+'T') : b2
        end
    end
    sep=-1
    i=0
    j=0
    l=0
    nl=1
    while i<nb
        # Get next character
        c=s[i]
        # Check if ASCII or MB
        ascii = false
        if c < 128
            ascii = true
        end
        if c.chr=="\n"
            # Explicit line break
            Cell(w,h,s[j..i-j],b,2,align,fill)
            i+=1
            sep=-1
            j=i
            l=0
            nl+=1
            if border and nl==2
                b=b2
		end
            next
        end
        if not ascii
            sep=i
            ls=l
        elsif c.chr==' '
            sep=i
            ls=l
        end
        if ascii
            l += cw[c.chr]
        else
            l += 1000
        end
        if l>wmax
            # Automatic line break
            if sep==-1 or i==j
                i += ascii ? 1 : 2 if i==j
                Cell(w,h,s[j..i-j],b,2,align,fill)
            else
                Cell(w,h,s[j..sep-j],b,2,align,fill)
                i=(s[sep]==' ') ? sep+1 : sep
            end
            sep=-1
            j=i
            l=0
            nl+=1
            if border and nl==2
                b=b2
            end
        else
            i+=$ascii ? 1 : 2
        end
    end

    # Last chunk
    b += 'B' if border and not border.index('B').nil?
    Cell(w,h,s[i..i-j],b,2,align,fill)
    @x=@lMargin
end

#MBWrite(h, txt, link) ⇒ Object 



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# File 'lib/chinese.rb', line 225

def MBWrite(h,txt,link)
    # Multi-byte version of Write()
    cw=@CurrentFont['cw']
    w=@w-@rMargin-@x
    wmax=(w-2*@cMargin)*1000/@FontSize
    s=txt.sub("\r", ' ')
    nb=s.length
    sep=-1
    i=0
    j=0
    l=0 
    nl=1
    while i<nb
        # Get next character
        c=s[i]
        # Check if ASCII or MB
        ascii = false
        if c < 128
            ascii = true
        end
        if c.chr=="\n"
            #Explicit line break
            Cell(w,h,s[j..i-j],0,2,'',0,link)
            i+=1
            sep=-1
            j=i
            l=0
            if nl==1
                @x=@lMargin
                w=@w-@rMargin-@x
                wmax=(w-2*@cMargin)*1000/@FontSize
            end
            nl+=1
            next
        end
        sep=i if not ascii or c.chr==' '
        if ascii
            l += cw[c.chr]
        else
            l += 1000
        end
        if l>wmax
            # Automatic line break
            if sep==-1 or i==j
                if @x>@lMargin
                    # Move to next line
                    @x=@lMargin
                    @y+=h
                    w=@w-@rMargin-@x
                    wmax=(w-2*@cMargin)*1000/@FontSize
                    i+=1
                    nl+=1
                    next
                end
                i+=ascii ? 1 : 2 if i==j
                Cell(w,h,s[j..i-j],0,2,'',0,link)
            else
                Cell(w,h,s[j..sep-j],0,2,'',0,link)
                i=(s[sep]==' ') ? sep+1 : sep
            end
            sep=-1
            j=i
            l=0
            if nl==1
                @x=@lMargin
                w=@w-@rMargin-@x
                wmax=(w-2*@cMargin)*1000/@FontSize
            end
            nl+=1
        else
            i+=ascii ? 1 : 2
        end
    end

    #Last chunk
    if i!=j
        Cell(l/1000*@FontSize,h,s[j..i-j],0,0,'',0,link)
    end
end

#MultiCell(w, h, txt, border = 0, align = 'L', fill = 0) ⇒ Object 



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# File 'lib/chinese.rb', line 123

def MultiCell(w,h,txt,border=0,align='L',fill=0)
    if @CurrentFont['type']=='Type0'
        MBMultiCell(w,h,txt,border,align,fill)
    else
        super(w,h,txt,border,align,fill)
    end
end

#Write(h, txt, link = '') ⇒ Object 



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# File 'lib/chinese.rb', line 217

def Write(h,txt,link='')
    if @CurrentFont['type']=='Type0'
        MBWrite(h,txt,link)
    else
        super(h,txt,link)
    end
end