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PDF: fix automatic line break in Chinese PDF (#5629)....
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1 1 # Copyright (c) 2006 4ssoM LLC <www.4ssoM.com>
2 2 # 1.12 contributed by Ed Moss.
3 3 #
4 4 # The MIT License
5 5 #
6 6 # Permission is hereby granted, free of charge, to any person obtaining a copy
7 7 # of this software and associated documentation files (the "Software"), to deal
8 8 # in the Software without restriction, including without limitation the rights
9 9 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 10 # copies of the Software, and to permit persons to whom the Software is
11 11 # furnished to do so, subject to the following conditions:
12 12 #
13 13 # The above copyright notice and this permission notice shall be included in
14 14 # all copies or substantial portions of the Software.
15 15 #
16 16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 19 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 21 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 22 # THE SOFTWARE.
23 23 #
24 24 # This is direct port of chinese.php
25 25 #
26 26 # Chinese PDF support.
27 27 #
28 28 # Usage is as follows:
29 29 #
30 30 # require 'fpdf'
31 31 # require 'chinese'
32 32 # pdf = FPDF.new
33 33 # pdf.extend(PDF_Chinese)
34 34 #
35 35 # This allows it to be combined with other extensions, such as the bookmark
36 36 # module.
37 37
38 38 module PDF_Chinese
39 39
40 40 Big5_widths={' '=>250,'!'=>250,'"'=>408,'#'=>668,'$'=>490,'%'=>875,'&'=>698,'\''=>250,
41 41 '('=>240,')'=>240,'*'=>417,'+'=>667,','=>250,'-'=>313,'.'=>250,'/'=>520,'0'=>500,'1'=>500,
42 42 '2'=>500,'3'=>500,'4'=>500,'5'=>500,'6'=>500,'7'=>500,'8'=>500,'9'=>500,':'=>250,';'=>250,
43 43 '<'=>667,'='=>667,'>'=>667,'?'=>396,'@'=>921,'A'=>677,'B'=>615,'C'=>719,'D'=>760,'E'=>625,
44 44 'F'=>552,'G'=>771,'H'=>802,'I'=>354,'J'=>354,'K'=>781,'L'=>604,'M'=>927,'N'=>750,'O'=>823,
45 45 'P'=>563,'Q'=>823,'R'=>729,'S'=>542,'T'=>698,'U'=>771,'V'=>729,'W'=>948,'X'=>771,'Y'=>677,
46 46 'Z'=>635,'['=>344,'\\'=>520,']'=>344,'^'=>469,'_'=>500,'`'=>250,'a'=>469,'b'=>521,'c'=>427,
47 47 'd'=>521,'e'=>438,'f'=>271,'g'=>469,'h'=>531,'i'=>250,'j'=>250,'k'=>458,'l'=>240,'m'=>802,
48 48 'n'=>531,'o'=>500,'p'=>521,'q'=>521,'r'=>365,'s'=>333,'t'=>292,'u'=>521,'v'=>458,'w'=>677,
49 49 'x'=>479,'y'=>458,'z'=>427,'{'=>480,'|'=>496,'}'=>480,'~'=>667}
50 50
51 51 GB_widths={' '=>207,'!'=>270,'"'=>342,'#'=>467,'$'=>462,'%'=>797,'&'=>710,'\''=>239,
52 52 '('=>374,')'=>374,'*'=>423,'+'=>605,','=>238,'-'=>375,'.'=>238,'/'=>334,'0'=>462,'1'=>462,
53 53 '2'=>462,'3'=>462,'4'=>462,'5'=>462,'6'=>462,'7'=>462,'8'=>462,'9'=>462,':'=>238,';'=>238,
54 54 '<'=>605,'='=>605,'>'=>605,'?'=>344,'@'=>748,'A'=>684,'B'=>560,'C'=>695,'D'=>739,'E'=>563,
55 55 'F'=>511,'G'=>729,'H'=>793,'I'=>318,'J'=>312,'K'=>666,'L'=>526,'M'=>896,'N'=>758,'O'=>772,
56 56 'P'=>544,'Q'=>772,'R'=>628,'S'=>465,'T'=>607,'U'=>753,'V'=>711,'W'=>972,'X'=>647,'Y'=>620,
57 57 'Z'=>607,'['=>374,'\\'=>333,']'=>374,'^'=>606,'_'=>500,'`'=>239,'a'=>417,'b'=>503,'c'=>427,
58 58 'd'=>529,'e'=>415,'f'=>264,'g'=>444,'h'=>518,'i'=>241,'j'=>230,'k'=>495,'l'=>228,'m'=>793,
59 59 'n'=>527,'o'=>524,'p'=>524,'q'=>504,'r'=>338,'s'=>336,'t'=>277,'u'=>517,'v'=>450,'w'=>652,
60 60 'x'=>466,'y'=>452,'z'=>407,'{'=>370,'|'=>258,'}'=>370,'~'=>605}
61 61
62 62 def AddCIDFont(family,style,name,cw,cMap,registry)
63 63 #ActionController::Base::logger.debug registry.to_a.join(":").to_s
64 64 fontkey=family.downcase+style.upcase
65 65 unless @fonts[fontkey].nil?
66 66 Error("Font already added: family style")
67 67 end
68 68 i=@fonts.length+1
69 69 name=name.gsub(' ','')
70 70 @fonts[fontkey]={'i'=>i,'type'=>'Type0','name'=>name,'up'=>-130,'ut'=>40,'cw'=>cw, 'CMap'=>cMap,'registry'=>registry}
71 71 end
72 72
73 73 def AddCIDFonts(family,name,cw,cMap,registry)
74 74 AddCIDFont(family,'',name,cw,cMap,registry)
75 75 AddCIDFont(family,'B',name+',Bold',cw,cMap,registry)
76 76 AddCIDFont(family,'I',name+',Italic',cw,cMap,registry)
77 77 AddCIDFont(family,'BI',name+',BoldItalic',cw,cMap,registry)
78 78 end
79 79
80 80 def AddBig5Font(family='Big5',name='MSungStd-Light-Acro')
81 81 #Add Big5 font with proportional Latin
82 82 cw=Big5_widths
83 83 cMap='ETenms-B5-H'
84 84 registry={'ordering'=>'CNS1','supplement'=>0}
85 85 #ActionController::Base::logger.debug registry.to_a.join(":").to_s
86 86 AddCIDFonts(family,name,cw,cMap,registry)
87 87 end
88 88
89 89 def AddBig5hwFont(family='Big5-hw',name='MSungStd-Light-Acro')
90 90 #Add Big5 font with half-witdh Latin
91 91 cw = {}
92 92 32.upto(126) do |i|
93 93 cw[i.chr]=500
94 94 end
95 95 cMap='ETen-B5-H'
96 96 registry={'ordering'=>'CNS1','supplement'=>0}
97 97 AddCIDFonts(family,name,cw,cMap,registry)
98 98 end
99 99
100 100 def AddGBFont(family='GB',name='STSongStd-Light-Acro')
101 101 #Add GB font with proportional Latin
102 102 cw=GB_widths
103 103 cMap='GBKp-EUC-H'
104 104 registry={'ordering'=>'GB1','supplement'=>2}
105 105 AddCIDFonts(family,name,cw,cMap,registry)
106 106 end
107 107
108 108 def AddGBhwFont(family='GB-hw',name='STSongStd-Light-Acro')
109 109 #Add GB font with half-width Latin
110 110 32.upto(126) do |i|
111 111 cw[i.chr]=500
112 112 end
113 113 cMap='GBK-EUC-H'
114 114 registry={'ordering'=>'GB1','supplement'=>2}
115 115 AddCIDFonts(family,name,cw,cMap,registry)
116 116 end
117 117
118 118 def GetStringWidth(s)
119 119 if(@CurrentFont['type']=='Type0')
120 120 return GetMBStringWidth(s)
121 121 else
122 122 return super(s)
123 123 end
124 124 end
125 125
126 126 def GetMBStringWidth(s)
127 127 #Multi-byte version of GetStringWidth()
128 128 l=0
129 129 cw=@CurrentFont['cw']
130 130 nb=s.length
131 131 i=0
132 132 while(i<nb)
133 133 c = s[i].is_a?(String) ? s[i].ord : s[i]
134 134 if(c<128)
135 135 l+=cw[c.chr] if cw[c.chr]
136 136 i+=1
137 137 else
138 138 l+=1000
139 139 i+=2
140 140 end
141 141 end
142 142 return l*@FontSize/1000
143 143 end
144 144
145 145 def MultiCell(w,h,txt,border=0,align='L',fill=0)
146 146 if(@CurrentFont['type']=='Type0')
147 147 MBMultiCell(w,h,txt,border,align,fill)
148 148 else
149 149 super(w,h,txt,border,align,fill)
150 150 end
151 151 end
152 152
153 153 def MBMultiCell(w,h,txt,border=0,align='L',fill=0)
154 154 #Multi-byte version of MultiCell()
155 155 cw=@CurrentFont['cw']
156 156 if(w==0)
157 157 w=@w-@rMargin-@x
158 158 end
159 159 wmax=(w-2*@cMargin)*1000/@FontSize
160 160 s=txt.gsub("\r",'')
161 161 nb=s.length
162 162 if(nb>0 and s[nb-1]=="\n")
163 163 nb-=1
164 164 end
165 165 b=0
166 166 if(border)
167 167 if(border==1)
168 168 border='LTRB'
169 169 b='LRT'
170 170 b2='LR'
171 171 else
172 172 b2=''
173 173 b2='L' unless border.to_s.index('L').nil?
174 174 b2=b2+'R' unless border.to_s.index('R').nil?
175 175 b=(border.to_s.index('T')) ? (b2+'T') : b2
176 176 end
177 177 end
178 178 sep=-1
179 179 i=0
180 180 j=0
181 181 l=0
182 182 nl=1
183 183 while(i<nb)
184 184 #Get next character
185 185 c = s[i].is_a?(String) ? s[i].ord : s[i]
186 186 #Check if ASCII or MB
187 187 ascii=(c<128)
188 188 if(c.chr=="\n")
189 189 #Explicit line break
190 190 Cell(w,h,s[j,i-j],b,2,align,fill)
191 191 i+=1
192 192 sep=-1
193 193 j=i
194 194 l=0
195 195 nl+=1
196 196 if(border and nl==2)
197 197 b=b2
198 198 end
199 199 next
200 200 end
201 201 if(!ascii)
202 202 sep=i
203 203 ls=l
204 204 elsif(c.chr==' ')
205 205 sep=i
206 206 ls=l
207 207 end
208 208 l+=(ascii ? cw[c.chr] : 1000) || 0
209 209 if(l>wmax)
210 210 #Automatic line break
211 211 if(sep==-1 or i==j)
212 212 if(i==j)
213 213 i+=ascii ? 1 : 2
214 214 end
215 215 Cell(w,h,s[j,i-j],b,2,align,fill)
216 216 else
217 217 Cell(w,h,s[j,sep-j],b,2,align,fill)
218 218 i=(s[sep].chr==' ') ? sep+1 : sep
219 219 end
220 220 sep=-1
221 221 j=i
222 222 l=0
223 # nl+=1
223 nl+=1
224 224 if(border and nl==2)
225 225 b=b2
226 226 end
227 227 else
228 228 i+=ascii ? 1 : 2
229 229 end
230 230 end
231 231 #Last chunk
232 232 if(border and not border.to_s.index('B').nil?)
233 233 b+='B'
234 234 end
235 235 Cell(w,h,s[j,i-j],b,2,align,fill)
236 236 @x=@lMargin
237 237 end
238 238
239 239 def Write(h,txt,link='')
240 240 if(@CurrentFont['type']=='Type0')
241 241 MBWrite(h,txt,link)
242 242 else
243 243 super(h,txt,link)
244 244 end
245 245 end
246 246
247 247 def MBWrite(h,txt,link)
248 248 #Multi-byte version of Write()
249 249 cw=@CurrentFont['cw']
250 250 w=@w-@rMargin-@x
251 251 wmax=(w-2*@cMargin)*1000/@FontSize
252 252 s=txt.gsub("\r",'')
253 253 nb=s.length
254 254 sep=-1
255 255 i=0
256 256 j=0
257 257 l=0
258 258 nl=1
259 259 while(i<nb)
260 260 #Get next character
261 261 c = s[i].is_a?(String) ? s[i].ord : s[i]
262 262 #Check if ASCII or MB
263 263 ascii=(c<128)
264 264 if(c.chr=="\n")
265 265 #Explicit line break
266 266 Cell(w,h,s[j,i-j],0,2,'',0,link)
267 267 i+=1
268 268 sep=-1
269 269 j=i
270 270 l=0
271 271 if(nl==1)
272 272 @x=@lMargin
273 273 w=@w-@rMargin-@x
274 274 wmax=(w-2*@cMargin)*1000/@FontSize
275 275 end
276 276 nl+=1
277 277 next
278 278 end
279 279 if(!ascii or c.chr==' ')
280 280 sep=i
281 281 end
282 282 l+=(ascii ? cw[c.chr] : 1000) || 0
283 283 if(l>wmax)
284 284 #Automatic line break
285 285 if(sep==-1 or i==j)
286 286 if(@x>@lMargin)
287 287 #Move to next line
288 288 @x=@lMargin
289 289 @y+=h
290 290 w=@w-@rMargin-@x
291 291 wmax=(w-2*@cMargin)*1000/@FontSize
292 292 i+=1
293 293 nl+=1
294 294 next
295 295 end
296 296 if(i==j)
297 297 i+=ascii ? 1 : 2
298 298 end
299 299 Cell(w,h,s[j,i-j],0,2,'',0,link)
300 300 else
301 301 Cell(w,h,s[j,sep-j],0,2,'',0,link)
302 302 i=(s[sep].chr==' ') ? sep+1 : sep
303 303 end
304 304 sep=-1
305 305 j=i
306 306 l=0
307 307 if(nl==1)
308 308 @x=@lMargin
309 309 w=@w-@rMargin-@x
310 310 wmax=(w-2*@cMargin)*1000/@FontSize
311 311 end
312 312 nl+=1
313 313 else
314 314 i+=ascii ? 1 : 2
315 315 end
316 316 end
317 317 #Last chunk
318 318 if(i!=j)
319 319 Cell(l/1000*@FontSize,h,s[j,i-j],0,0,'',0,link)
320 320 end
321 321 end
322 322
323 323 private
324 324
325 325 def putfonts()
326 326 nf=@n
327 327 @diffs.each do |diff|
328 328 #Encodings
329 329 newobj()
330 330 out('<</Type /Encoding /BaseEncoding /WinAnsiEncoding /Differences ['+diff+']>>')
331 331 out('endobj')
332 332 end
333 333 # mqr=get_magic_quotes_runtime()
334 334 # set_magic_quotes_runtime(0)
335 335 @FontFiles.each_pair do |file, info|
336 336 #Font file embedding
337 337 newobj()
338 338 @FontFiles[file]['n']=@n
339 339 if(defined('FPDF_FONTPATH'))
340 340 file=FPDF_FONTPATH+file
341 341 end
342 342 size=filesize(file)
343 343 if(!size)
344 344 Error('Font file not found')
345 345 end
346 346 out('<</Length '+size)
347 347 if(file[-2]=='.z')
348 348 out('/Filter /FlateDecode')
349 349 end
350 350 out('/Length1 '+info['length1'])
351 351 unless info['length2'].nil?
352 352 out('/Length2 '+info['length2']+' /Length3 0')
353 353 end
354 354 out('>>')
355 355 f=fopen(file,'rb')
356 356 putstream(fread(f,size))
357 357 fclose(f)
358 358 out('endobj')
359 359 end
360 360 #
361 361 # set_magic_quotes_runtime(mqr)
362 362 #
363 363 @fonts.each_pair do |k, font|
364 364 #Font objects
365 365 newobj()
366 366 @fonts[k]['n']=@n
367 367 out('<</Type /Font')
368 368 if(font['type']=='Type0')
369 369 putType0(font)
370 370 else
371 371 name=font['name']
372 372 out('/BaseFont /'+name)
373 373 if(font['type']=='core')
374 374 #Standard font
375 375 out('/Subtype /Type1')
376 376 if(name!='Symbol' and name!='ZapfDingbats')
377 377 out('/Encoding /WinAnsiEncoding')
378 378 end
379 379 else
380 380 #Additional font
381 381 out('/Subtype /'+font['type'])
382 382 out('/FirstChar 32')
383 383 out('/LastChar 255')
384 384 out('/Widths '+(@n+1)+' 0 R')
385 385 out('/FontDescriptor '+(@n+2)+' 0 R')
386 386 if(font['enc'])
387 387 if !font['diff'].nil?
388 388 out('/Encoding '+(nf+font['diff'])+' 0 R')
389 389 else
390 390 out('/Encoding /WinAnsiEncoding')
391 391 end
392 392 end
393 393 end
394 394 out('>>')
395 395 out('endobj')
396 396 if(font['type']!='core')
397 397 #Widths
398 398 newobj()
399 399 cw=font['cw']
400 400 s='['
401 401 32.upto(255) do |i|
402 402 s+=cw[i.chr]+' '
403 403 end
404 404 out(s+']')
405 405 out('endobj')
406 406 #Descriptor
407 407 newobj()
408 408 s='<</Type /FontDescriptor /FontName /'+name
409 409 font['desc'].each_pair do |k, v|
410 410 s+=' /'+k+' '+v
411 411 end
412 412 file=font['file']
413 413 if(file)
414 414 s+=' /FontFile'+(font['type']=='Type1' ? '' : '2')+' '+@FontFiles[file]['n']+' 0 R'
415 415 end
416 416 out(s+'>>')
417 417 out('endobj')
418 418 end
419 419 end
420 420 end
421 421 end
422 422
423 423 def putType0(font)
424 424 #Type0
425 425 out('/Subtype /Type0')
426 426 out('/BaseFont /'+font['name']+'-'+font['CMap'])
427 427 out('/Encoding /'+font['CMap'])
428 428 out('/DescendantFonts ['+(@n+1).to_s+' 0 R]')
429 429 out('>>')
430 430 out('endobj')
431 431 #CIDFont
432 432 newobj()
433 433 out('<</Type /Font')
434 434 out('/Subtype /CIDFontType0')
435 435 out('/BaseFont /'+font['name'])
436 436 out('/CIDSystemInfo <</Registry '+textstring('Adobe')+' /Ordering '+textstring(font['registry']['ordering'])+' /Supplement '+font['registry']['supplement'].to_s+'>>')
437 437 out('/FontDescriptor '+(@n+1).to_s+' 0 R')
438 438 if(font['CMap']=='ETen-B5-H')
439 439 w='13648 13742 500'
440 440 elsif(font['CMap']=='GBK-EUC-H')
441 441 w='814 907 500 7716 [500]'
442 442 else
443 443 # ActionController::Base::logger.debug font['cw'].keys.sort.join(' ').to_s
444 444 # ActionController::Base::logger.debug font['cw'].values.join(' ').to_s
445 445 w='1 ['
446 446 font['cw'].keys.sort.each {|key|
447 447 w+=font['cw'][key].to_s + " "
448 448 # ActionController::Base::logger.debug key.to_s
449 449 # ActionController::Base::logger.debug font['cw'][key].to_s
450 450 }
451 451 w +=']'
452 452 end
453 453 out('/W ['+w+']>>')
454 454 out('endobj')
455 455 #Font descriptor
456 456 newobj()
457 457 out('<</Type /FontDescriptor')
458 458 out('/FontName /'+font['name'])
459 459 out('/Flags 6')
460 460 out('/FontBBox [0 -200 1000 900]')
461 461 out('/ItalicAngle 0')
462 462 out('/Ascent 800')
463 463 out('/Descent -200')
464 464 out('/CapHeight 800')
465 465 out('/StemV 50')
466 466 out('>>')
467 467 out('endobj')
468 468 end
469 469 end
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