Contents
文用 Reportlab 生成中文 PDF
Jiahua Huang <[email protected]> reply-to [email protected] to "Python.cn@google" <[email protected]> date Fri, Aug 8, 2008 at 15:13
subject [CPyUG:61808] 简单使用 Reportlab 生成中文 PDF 文档
- 再次看到关于将 reStructurctedText、asciidoc、xhtml 转换为 PDF 格式的话题，
- python 里用 Reportlab 应该比用 tex、docbook、fop 合适，
不过 python-reportlab 默认没中文字体，也没中文换行，
- 而现有的使用 Reportlab 的程序改起来也麻烦，
便干脆用运行中修改的方式覆盖掉 reportlab.lib.fonts.ps2tt reportlab.lib.fonts.tt2ps reportlab.platypus.Paragraph.wrap 让强制用中文字体，强制尝试中文换行(，强制用 UTF-8 中文)
- 好处是现有程序和库 (比如现有的那堆 rst2pdf、html2pdf、wiki2pdf 等程序) 不用做任何改动就可以中文，
缺陷是连英文也没粗体斜体了。
实例和分析
最新版本:html2pdf @ openbookproject.googlecode.com
- 添加
- ## Hack for Chinese fonts ############################
1 import reportlab.rl_config
2 reportlab.rl_config.warnOnMissingFontGlyphs = 0
3 import reportlab.pdfbase.pdfmetrics
4 import reportlab.pdfbase.ttfonts
5 reportlab.pdfbase.pdfmetrics.registerFont(reportlab.pdfbase.ttfonts.TTFont('song',
6 '/usr/share/fonts/truetype/wqy/wqy-zenhei.ttf'))
7 import reportlab.lib.fonts
8 reportlab.lib.fonts.ps2tt = lambda psfn: ('song', 0, 0)
9 reportlab.lib.fonts.tt2ps = lambda fn,b,i: 'song'
10 ## for CJK Wrap
11 import reportlab.platypus
12 def wrap(self, availWidth, availHeight):
13 # work out widths array for breaking
14 self.width = availWidth
15 leftIndent = self.style.leftIndent
16 first_line_width = availWidth -
17 (leftIndent+self.style.firstLineIndent) - self.style.rightIndent
18 later_widths = availWidth - leftIndent - self.style.rightIndent
19 try:
20 self.blPara = self.breakLinesCJK([first_line_width, later_widths])
21 except:
22 self.blPara = self.breakLines([first_line_width, later_widths])
23 self.height = len(self.blPara.lines) * self.style.leading
24 return (self.width, self.height)
25
26 reportlab.platypus.Paragraph.wrap = wrap
27
28 import sys
29 reload(sys)
30 sys.setdefaultencoding('utf8')
追加 pisa3 中文技巧
使用 pisa3 html2pdf 前插入下边语句
1 ## Hack for Chinese fonts ############################
2 import reportlab.rl_config
3 reportlab.rl_config.warnOnMissingFontGlyphs = 0
4 from reportlab.pdfbase import pdfmetrics
5 from reportlab.pdfbase.ttfonts import TTFont
6
7 from reportlab.pdfgen import canvas
8 pdfmetrics.registerFont(TTFont('song', '/usr/share/fonts/truetype/wqy/wqy-zenhei.ttf'))
9 from reportlab.lib import fonts
10
11 fonts.ps2tt = lambda psfn: ('song', 0, 0)
12 fonts.tt2ps = lambda fn,b,i: 'song'
13
14 import reportlab.platypus
15 def wrap(self, availWidth, availHeight):
16 # work out widths array for breaking
17 self.width = availWidth
18 leftIndent = self.style.leftIndent
19 first_line_width = availWidth - (leftIndent+self.style.firstLineIndent) - self.style.rightIndent
20 later_widths = availWidth - leftIndent - self.style.rightIndent
21 try:
22 self.blPara = self.breakLinesCJK([first_line_width, later_widths])
23 except:
24 #print 'breakLinesCJK except:',self, availWidth, availHeight
25
26 self.blPara = self.breakLines([first_line_width, later_widths])
27 self.height = len(self.blPara.lines) * self.style.leading
28 return (self.width, self.height)
29
30 reportlab.platypus.Paragraph.wrap = wrap
31
32 ## no zoomed for bookmarkPage
33 import reportlab.pdfgen.canvas
34 bookmarkPage = reportlab.pdfgen.canvas.Canvas.bookmarkPage
35
36 reportlab.pdfgen.canvas.Canvas.bookmarkPage = lambda self, key, **kwargs: apply(bookmarkPage, (self, key), {'fit':'XYZ'})
37
38 ## for image
39 import pisa_default; pisa_default.TAGS["img"][1]["src"] = (8, 23) #(STRING, MUST)
40
41
42 import sys
43 reload(sys)
44 sys.setdefaultencoding('utf8')
45 ########################################################
使用和对比
UsageRstReportlabExPdf ~ 用 python-reportlab 将 rst 转换为中文 PDF
- 实例输出:
反馈
创建 by -- ZoomQuiet [2008-08-08 07:43:16]