Reportlab-Unicode字符以Unicode支持的字体显示为方框

Question

Trying to use reportlab through python 3 to write a document that includes macrons (ā ē ī ō ū), but the macrons are showing up as boxes (■). The document is written in Arial font -- but if I open up the file in a word processor to check the font, the boxes are in 'Segoe UI Symbol' font.

For importing in Arial as a font that supports a broad range of unicode characters (which seems to have worked):

import reportlab.rl_config
reportlab.rl_config.warnOnMissingFontGlyphs = 0
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
pdfmetrics.registerFont(TTFont('Arial', 'Arial.ttf'))

I also import a dictionary through json, looking something like this when I open the json file in notepad:

{"example1":"b\u0101s"}

The program reads and writes this dictionary:

from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer
from reportlab.lib.styles import getSampleStyleSheet
doc = SimpleDocTemplate("hello.pdf")
Story = [Spacer(1,2*inch)]
style = styles["Normal"]
with open('CompDict.json','r') as f:
        m_dic=json.load(f)
for key,value in m_dic:
     p=Paragraph(key+":"+value,style)
     Story.append(p)
doc.build(Story)

The outcome should be a pdf with example1:bās but instead comes out as example1:b■s

Answer 1

Find your character under this link:

UTF-8 encoding table and Unicode characters

1. Go to (utf-in literal) row of the table.

2. You will see some: \\xc3\\x85 like characters. Choose your character...

3. Then for text output, in your code type something like :

   Canvas.drawString(x,y,'\\xc3\\x85') => and it will print Å ...

So you have to change your dictionary items to UTF-8 LITERALS because it will not understand "b\ās" Unicode, which there are many ways to do so ...

best regards

Answer 2

#Here I am writing chunks of code, hope you will understand

from reportlab.platypus import Paragraph, SimpleDocTemplate, Spacer  
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle   
from reportlab.lib.enums import TA_CENTER,TA_JUSTIFY       
from reportlab.pdfbase import pdfmetrics      
from reportlab.pdfbase.ttfonts import TTFont   
from reportlab.lib.fonts import addMapping

pdfmetrics.registerFont(TTFont('devaNagri', 'NotoSerifDevanagari.ttf')) # devaNagri is a folder located in **/usr/share/fonts/truetype** and 'NotoSerifDevanagari.ttf' file you just download it from https://www.google.com/get/noto/#sans-deva and move to devaNagri folder.

addMapping('devaNagri', 0, 0, 'NotoSerifDevanagari') #devnagri is a folder name and NotoSerifDevanagari is file name 

style = getSampleStyleSheet()   
style.add(ParagraphStyle(name="ParagraphTitle", alignment=TA_JUSTIFY, fontName="devaNagri")) # after mapping fontName define your folder name.   
paragraph = Paragraph('your unicode string', style["ParagraphTitle"])