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PDF rendering: Do not create TTFont if already cached (#5748)

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This provides a massive speedup for invoice rendering
This commit is contained in:
Raphael Michel
2026-01-05 12:15:35 +01:00
committed by GitHub
parent 449b960438
commit bb5a9bdbf1
4 changed files with 39 additions and 32 deletions
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22
src/pretix/base/pdf.py
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@@ -71,9 +71,7 @@ from reportlab.lib.colors import Color
from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_RIGHT
from reportlab.lib.styles import ParagraphStyle
from reportlab.lib.units import mm
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.pdfmetrics import getAscentDescent
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.pdfgen.canvas import Canvas
from reportlab.platypus import Paragraph
@@ -84,7 +82,9 @@ from pretix.base.signals import layout_image_variables, layout_text_variables
from pretix.base.templatetags.money import money_filter
from pretix.base.templatetags.phone_format import phone_format
from pretix.helpers.daterange import datetimerange
from pretix.helpers.reportlab import ThumbnailingImageReader, reshaper
from pretix.helpers.reportlab import (
ThumbnailingImageReader, register_ttf_font_if_new, reshaper,
)
from pretix.presale.style import get_fonts
logger = logging.getLogger(__name__)
@@ -794,19 +794,19 @@ class Renderer:
def _register_fonts(cls, event: Event = None):
if hasattr(cls, '_fonts_registered'):
return
pdfmetrics.registerFont(TTFont('Open Sans', finders.find('fonts/OpenSans-Regular.ttf')))
pdfmetrics.registerFont(TTFont('Open Sans I', finders.find('fonts/OpenSans-Italic.ttf')))
pdfmetrics.registerFont(TTFont('Open Sans B', finders.find('fonts/OpenSans-Bold.ttf')))
pdfmetrics.registerFont(TTFont('Open Sans B I', finders.find('fonts/OpenSans-BoldItalic.ttf')))
register_ttf_font_if_new('Open Sans', finders.find('fonts/OpenSans-Regular.ttf'))
register_ttf_font_if_new('Open Sans I', finders.find('fonts/OpenSans-Italic.ttf'))
register_ttf_font_if_new('Open Sans B', finders.find('fonts/OpenSans-Bold.ttf'))
register_ttf_font_if_new('Open Sans B I', finders.find('fonts/OpenSans-BoldItalic.ttf'))
for family, styles in get_fonts(event, pdf_support_required=True).items():
pdfmetrics.registerFont(TTFont(family, finders.find(styles['regular']['truetype'])))
register_ttf_font_if_new(family, finders.find(styles['regular']['truetype']))
if 'italic' in styles:
pdfmetrics.registerFont(TTFont(family + ' I', finders.find(styles['italic']['truetype'])))
register_ttf_font_if_new(family + ' I', finders.find(styles['italic']['truetype']))
if 'bold' in styles:
pdfmetrics.registerFont(TTFont(family + ' B', finders.find(styles['bold']['truetype'])))
register_ttf_font_if_new(family + ' B', finders.find(styles['bold']['truetype']))
if 'bolditalic' in styles:
pdfmetrics.registerFont(TTFont(family + ' B I', finders.find(styles['bolditalic']['truetype'])))
register_ttf_font_if_new(family + ' B I', finders.find(styles['bolditalic']['truetype']))
cls._fonts_registered = True