使用 reportlab python 库生成孟加拉语 PDF [英] Generating PDF in Bangla Language with reportlab python library

问题描述

我已经尝试在孟加拉语labguage 中生成PDF.在这里我添加了 Bangla Uni-Code 字体.但是我的 PDF 不是生成正确性的.在这里我添加了代码片段和 Imag 的输出.为什么在孟加拉语中字体不能正常工作或 PDF 不能正常生成?

I have try to generate PDF in BANGALA labguage. Here I added Bangla Uni-Code font. But My PDF is not genated correclty. here I add Code Snippet and output of Imag. Why Font is not working properly or PDF is not generated properly in Bangla?

这是我的代码

import os
from io import BytesIO
from reportlab.lib import colors
from reportlab.lib.pagesizes import A4, inch, landscape
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle, Paragraph, Frame
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.enums import TA_LEFT, TA_CENTER, TA_RIGHT, TA_JUSTIFY
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from django.http import HttpResponse


def download_pdf_file(request):

    # Create the HttpResponse object with the appropriate PDF headers.
    response = HttpResponse(content_type='application/pdf')
    response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"'
    buffer = BytesIO()


    doc = SimpleDocTemplate(buffer, pagesize=A4, rightMargin=30, leftMargin=30, topMargin=30,
                            bottomMargin=18)
    doc.pagesize = landscape(A4)
    elements = []
    fontdiractory="/home/osman/font/"
    pdfmetrics.registerFont(TTFont('bangla', os.path.join(fontdiractory, 'Siyamrupali_1_01.ttf')))
    styles = getSampleStyleSheet()
    style_centre = ParagraphStyle(name='centre', parent=styles['Heading2'],fontName='bangla', alignment=TA_CENTER)

    p = Paragraph("গণপ্রজাতন্ত্রী বাংলাদেশ", style_centre)
    elements.append(p)
    p = Paragraph("UEO Office", style_centre)
    elements.append(p)
    p = Paragraph("Upazilla: "+'Tongipara'+ " District: "+'Gopalgonj', style_centre)
    elements.append(p)

    data = [
        ['Govt. Primary School','','','','','','',''],
        ['Ebtedaiye Madrasha','','','','','','',''],
        ['গণপ্রজাতন্ত্রী বাংলাদেশ','','','','','','',''],
        ['Primary school','','','','','','',''],
        ['Primary school','','','','','','',''],
        ['Primary school','','','','','','','']
    ]

    # TODO: Get this line right instead of just copying it from the docs
    style = TableStyle([('ALIGN', (1, 1), (-2, -2), 'RIGHT'),
                        ('TEXTCOLOR', (1, 1), (-2, -2), colors.red),
                        ('VALIGN', (0, 0), (0, -1), 'TOP'),
                        ('TEXTCOLOR', (0, 0), (0, -1), colors.blue),
                        ('ALIGN', (0, -1), (-1, -1), 'CENTER'),
                        ('VALIGN', (0, -1), (-1, -1), 'MIDDLE'),
                        ('TEXTCOLOR', (0, -1), (-1, -1), colors.green),
                        ('INNERGRID', (0, 0), (-1, -1), 0.25, colors.black),
                        ('BOX', (0, 0), (-1, -1), 0.25, colors.black),
                        ])

    data2 = [[Paragraph(cell, style_centre) for cell in row] for row in data]
    t = Table(data2)
    t.setStyle(style)
    elements.append(t)

    doc.build(elements)
    response.write(buffer.getvalue())
    buffer.close()
    return response

推荐答案

I can see Default canvas_basefontname is "Helvetica" 参见 reportlab 配置文档，所以我将 canvas_basefontname 更改为我需要的字体.就是这样.我在此链接中添加了以下代码源.

I can see Default canvas_basefontname is "Helvetica" see in reportlab config doc so I change the canvas_basefontname to my required font. that`s it. I add bellow code fount in this link.

from reportlab import rl_config
rl_config._SAVED['canvas_basefontname'] = 'bangla'
rl_config._startUp()

这篇关于使用 reportlab python 库生成孟加拉语 PDF的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！