forked from CGM_Public/pretix_original
Swappable invoice renderers
This commit is contained in:
Raphael Michel
@@ -1,25 +1,11 @@
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import copy
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import tempfile
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from collections import defaultdict
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from decimal import Decimal
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from django.contrib.staticfiles import finders
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from django.core.files.base import ContentFile
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from django.db import transaction
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from django.utils import timezone
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from django.utils.formats import date_format, localize
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from django.utils.translation import pgettext, ugettext as _
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from i18nfield.strings import LazyI18nString
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from reportlab.lib import pagesizes
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from reportlab.lib.styles import ParagraphStyle, StyleSheet1
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from reportlab.lib.units import mm
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from reportlab.lib.utils import ImageReader
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from reportlab.pdfbase import pdfmetrics
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from reportlab.pdfbase.ttfonts import TTFont
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from reportlab.platypus import (
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BaseDocTemplate, Frame, NextPageTemplate, PageTemplate, Paragraph, Spacer,
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Table, TableStyle,
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)
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from pretix.base.i18n import language
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from pretix.base.models import Invoice, InvoiceAddress, InvoiceLine, Order
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@@ -77,7 +63,8 @@ def build_invoice(invoice: Invoice) -> Invoice:
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if invoice.order.payment_fee:
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InvoiceLine.objects.create(
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invoice=invoice, description=_('Payment via {method}').format(method=str(payment_provider.verbose_name)),
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invoice=invoice,
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description=_('Payment via {method}').format(method=str(payment_provider.verbose_name)),
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gross_value=invoice.order.payment_fee, tax_value=invoice.order.payment_fee_tax_value,
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tax_rate=invoice.order.payment_fee_tax_rate
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)
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@@ -138,265 +125,12 @@ def generate_invoice(order: Order):
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return invoice
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def _invoice_get_stylesheet():
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stylesheet = StyleSheet1()
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stylesheet.add(ParagraphStyle(name='Normal', fontName='OpenSans', fontSize=10, leading=12))
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stylesheet.add(ParagraphStyle(name='Heading1', fontName='OpenSansBd', fontSize=15, leading=15 * 1.2))
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return stylesheet
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def _invoice_register_fonts():
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pdfmetrics.registerFont(TTFont('OpenSans', finders.find('fonts/OpenSans-Regular.ttf')))
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pdfmetrics.registerFont(TTFont('OpenSansIt', finders.find('fonts/OpenSans-Italic.ttf')))
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pdfmetrics.registerFont(TTFont('OpenSansBd', finders.find('fonts/OpenSans-Bold.ttf')))
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def _invoice_generate_german(invoice, f):
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_invoice_register_fonts()
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styles = _invoice_get_stylesheet()
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pagesize = pagesizes.A4
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def on_page(canvas, doc):
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canvas.saveState()
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canvas.setFont('OpenSans', 8)
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canvas.drawRightString(pagesize[0] - 20 * mm, 10 * mm, _("Page %d") % (doc.page,))
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for i, line in enumerate(invoice.footer_text.split('\n')[::-1]):
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canvas.drawCentredString(pagesize[0] / 2, 25 + (3.5 * i) * mm, line.strip())
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canvas.restoreState()
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def on_first_page(canvas, doc):
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canvas.setCreator('pretix.eu')
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canvas.setTitle(pgettext('invoice', 'Invoice {num}').format(num=invoice.number))
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canvas.saveState()
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canvas.setFont('OpenSans', 8)
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canvas.drawRightString(pagesize[0] - 20 * mm, 10 * mm, _("Page %d") % (doc.page,))
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for i, line in enumerate(invoice.footer_text.split('\n')[::-1]):
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canvas.drawCentredString(pagesize[0] / 2, 25 + (3.5 * i) * mm, line.strip())
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textobject = canvas.beginText(25 * mm, (297 - 15) * mm)
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(pgettext('invoice', 'Invoice from').upper())
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canvas.drawText(textobject)
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p = Paragraph(invoice.invoice_from.strip().replace('\n', '<br />\n'), style=styles['Normal'])
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p.wrapOn(canvas, 70 * mm, 50 * mm)
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p_size = p.wrap(70 * mm, 50 * mm)
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p.drawOn(canvas, 25 * mm, (297 - 17) * mm - p_size[1])
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textobject = canvas.beginText(25 * mm, (297 - 50) * mm)
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(pgettext('invoice', 'Invoice to').upper())
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canvas.drawText(textobject)
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p = Paragraph(invoice.invoice_to.strip().replace('\n', '<br />\n'), style=styles['Normal'])
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p.wrapOn(canvas, 85 * mm, 50 * mm)
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p_size = p.wrap(85 * mm, 50 * mm)
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p.drawOn(canvas, 25 * mm, (297 - 52) * mm - p_size[1])
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textobject = canvas.beginText(125 * mm, (297 - 38) * mm)
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(_('Order code').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(invoice.order.full_code)
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canvas.drawText(textobject)
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textobject = canvas.beginText(125 * mm, (297 - 50) * mm)
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textobject.setFont('OpenSansBd', 8)
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if invoice.is_cancellation:
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textobject.textLine(pgettext('invoice', 'Cancellation number').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(invoice.number)
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(pgettext('invoice', 'Original invoice').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(invoice.refers.number)
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else:
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textobject.textLine(pgettext('invoice', 'Invoice number').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(invoice.number)
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textobject.moveCursor(0, 5)
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if invoice.is_cancellation:
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(pgettext('invoice', 'Cancellation date').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(date_format(invoice.date, "DATE_FORMAT"))
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(pgettext('invoice', 'Original invoice date').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(date_format(invoice.refers.date, "DATE_FORMAT"))
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textobject.moveCursor(0, 5)
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else:
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(pgettext('invoice', 'Invoice date').upper())
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textobject.moveCursor(0, 5)
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textobject.setFont('OpenSans', 10)
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textobject.textLine(date_format(invoice.date, "DATE_FORMAT"))
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textobject.moveCursor(0, 5)
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canvas.drawText(textobject)
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if invoice.event.settings.invoice_logo_image:
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logo_file = invoice.event.settings.get('invoice_logo_image', binary_file=True)
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canvas.drawImage(ImageReader(logo_file),
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95 * mm, (297 - 38) * mm,
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width=25 * mm, height=25 * mm,
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preserveAspectRatio=True, anchor='n',
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mask='auto')
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if invoice.event.settings.show_date_to:
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p_str = (
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str(invoice.event.name) + '\n' + _('{from_date}\nuntil {to_date}').format(
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from_date=invoice.event.get_date_from_display(),
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to_date=invoice.event.get_date_to_display())
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)
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else:
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p_str = (
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str(invoice.event.name) + '\n' + invoice.event.get_date_from_display()
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)
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p = Paragraph(p_str.strip().replace('\n', '<br />\n'), style=styles['Normal'])
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p.wrapOn(canvas, 65 * mm, 50 * mm)
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p_size = p.wrap(65 * mm, 50 * mm)
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p.drawOn(canvas, 125 * mm, (297 - 17) * mm - p_size[1])
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textobject = canvas.beginText(125 * mm, (297 - 15) * mm)
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textobject.setFont('OpenSansBd', 8)
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textobject.textLine(_('Event').upper())
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canvas.drawText(textobject)
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canvas.restoreState()
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doc = BaseDocTemplate(f.name, pagesize=pagesizes.A4,
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leftMargin=25 * mm, rightMargin=20 * mm,
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topMargin=20 * mm, bottomMargin=15 * mm)
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footer_length = 3.5 * len(invoice.footer_text.split('\n')) * mm
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frames_p1 = [
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Frame(doc.leftMargin, doc.bottomMargin, doc.width, doc.height - 75 * mm,
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leftPadding=0, rightPadding=0, topPadding=0, bottomPadding=footer_length,
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id='normal')
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]
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frames = [
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Frame(doc.leftMargin, doc.bottomMargin, doc.width, doc.height,
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leftPadding=0, rightPadding=0, topPadding=0, bottomPadding=footer_length,
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id='normal')
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]
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doc.addPageTemplates([
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PageTemplate(id='FirstPage', frames=frames_p1, onPage=on_first_page, pagesize=pagesize),
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PageTemplate(id='OtherPages', frames=frames, onPage=on_page, pagesize=pagesize)
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])
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story = [
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NextPageTemplate('FirstPage'),
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Paragraph(pgettext('invoice', 'Invoice')
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if not invoice.is_cancellation
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else pgettext('invoice', 'Cancellation'),
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styles['Heading1']),
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Spacer(1, 5 * mm),
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NextPageTemplate('OtherPages'),
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]
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if invoice.introductory_text:
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story.append(Paragraph(invoice.introductory_text, styles['Normal']))
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story.append(Spacer(1, 10 * mm))
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taxvalue_map = defaultdict(Decimal)
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grossvalue_map = defaultdict(Decimal)
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tstyledata = [
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('ALIGN', (1, 0), (-1, -1), 'RIGHT'),
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('VALIGN', (0, 0), (-1, -1), 'TOP'),
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('FONTNAME', (0, 0), (-1, 0), 'OpenSansBd'),
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('FONTNAME', (0, -1), (-1, -1), 'OpenSansBd'),
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('LEFTPADDING', (0, 0), (0, -1), 0),
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('RIGHTPADDING', (-1, 0), (-1, -1), 0),
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]
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tdata = [(
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pgettext('invoice', 'Description'),
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pgettext('invoice', 'Tax rate'),
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pgettext('invoice', 'Net'),
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pgettext('invoice', 'Gross'),
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)]
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total = Decimal('0.00')
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for line in invoice.lines.all():
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tdata.append((
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Paragraph(line.description, styles['Normal']),
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localize(line.tax_rate) + " %",
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localize(line.net_value) + " " + invoice.event.currency,
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localize(line.gross_value) + " " + invoice.event.currency,
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))
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taxvalue_map[line.tax_rate] += line.tax_value
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grossvalue_map[line.tax_rate] += line.gross_value
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total += line.gross_value
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tdata.append([pgettext('invoice', 'Invoice total'), '', '', localize(total) + " " + invoice.event.currency])
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colwidths = [a * doc.width for a in (.55, .15, .15, .15)]
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table = Table(tdata, colWidths=colwidths, repeatRows=1)
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table.setStyle(TableStyle(tstyledata))
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story.append(table)
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story.append(Spacer(1, 15 * mm))
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if invoice.payment_provider_text:
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story.append(Paragraph(invoice.payment_provider_text, styles['Normal']))
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if invoice.additional_text:
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story.append(Paragraph(invoice.additional_text, styles['Normal']))
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story.append(Spacer(1, 15 * mm))
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tstyledata = [
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('SPAN', (1, 0), (-1, 0)),
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('ALIGN', (2, 1), (-1, -1), 'RIGHT'),
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('LEFTPADDING', (0, 0), (0, -1), 0),
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('RIGHTPADDING', (-1, 0), (-1, -1), 0),
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('FONTSIZE', (0, 0), (-1, -1), 8),
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]
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tdata = [('', pgettext('invoice', 'Included taxes'), '', '', ''),
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('', pgettext('invoice', 'Tax rate'),
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pgettext('invoice', 'Net value'), pgettext('invoice', 'Gross value'), pgettext('invoice', 'Tax'))]
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for rate, gross in grossvalue_map.items():
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if line.tax_rate == 0:
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continue
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tax = taxvalue_map[rate]
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tdata.append((
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'',
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localize(rate) + " %",
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localize((gross - tax)) + " " + invoice.event.currency,
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localize(gross) + " " + invoice.event.currency,
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localize(tax) + " " + invoice.event.currency,
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))
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if len(tdata) > 2:
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colwidths = [a * doc.width for a in (.45, .10, .15, .15, .15)]
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table = Table(tdata, colWidths=colwidths, repeatRows=2)
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table.setStyle(TableStyle(tstyledata))
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story.append(table)
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doc.build(story)
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return doc
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@app.task(base=TransactionAwareTask)
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def invoice_pdf_task(invoice: int):
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i = Invoice.objects.get(pk=invoice)
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with language(i.locale):
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with tempfile.NamedTemporaryFile(suffix=".pdf") as f:
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_invoice_generate_german(i, f)
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f.seek(0)
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i.file.save('invoice.pdf', ContentFile(f.read()))
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fname, ftype, fcontent = i.event.invoice_renderer.generate(i)
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i.file.save(fname, ContentFile(fcontent))
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i.save()
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return i.file.name
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@@ -452,7 +186,4 @@ def build_preview_invoice_pdf(event):
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gross_value=119, tax_value=19,
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tax_rate=19
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)
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with tempfile.NamedTemporaryFile(suffix=".pdf") as f:
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_invoice_generate_german(invoice, f)
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f.seek(0)
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return f.read()
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return event.invoice_renderer.generate(invoice)
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