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PDF editor: Add multi-page support

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Raphael Michel
2022-03-13 14:10:02 +01:00
committed by Raphael Michel
parent b05fa89010
commit ebf0320c2c
5 changed files with 126 additions and 50 deletions
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44
src/pretix/base/pdf.py
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@@ -754,20 +754,30 @@ class Renderer:
p.drawOn(canvas, 0, -h - ad[1])
canvas.restoreState()
def draw_page(self, canvas: Canvas, order: Order, op: OrderPosition, show_page=True):
for o in self.layout:
if o['type'] == "barcodearea":
self._draw_barcodearea(canvas, op, o)
elif o['type'] == "imagearea":
self._draw_imagearea(canvas, op, order, o)
elif o['type'] == "textarea":
self._draw_textarea(canvas, op, order, o)
elif o['type'] == "poweredby":
self._draw_poweredby(canvas, op, o)
if self.bg_pdf:
canvas.setPageSize((self.bg_pdf.getPage(0).mediaBox[2], self.bg_pdf.getPage(0).mediaBox[3]))
if show_page:
canvas.showPage()
def draw_page(self, canvas: Canvas, order: Order, op: OrderPosition, show_page=True, only_page=None):
page_count = self.bg_pdf.getNumPages()
if not only_page and not show_page:
raise ValueError("only_page=None and show_page=False cannot be combined")
for page in range(page_count):
if only_page and only_page != page + 1:
continue
for o in self.layout:
if o.get('page', 1) != page + 1:
continue
if o['type'] == "barcodearea":
self._draw_barcodearea(canvas, op, o)
elif o['type'] == "imagearea":
self._draw_imagearea(canvas, op, order, o)
elif o['type'] == "textarea":
self._draw_textarea(canvas, op, order, o)
elif o['type'] == "poweredby":
self._draw_poweredby(canvas, op, o)
if self.bg_pdf:
canvas.setPageSize((self.bg_pdf.getPage(page).mediaBox[2], self.bg_pdf.getPage(page).mediaBox[3]))
if show_page:
canvas.showPage()
def render_background(self, buffer, title=_('Ticket')):
if settings.PDFTK:
@@ -780,7 +790,7 @@ class Renderer:
subprocess.run([
settings.PDFTK,
os.path.join(d, 'front.pdf'),
'background',
'multibackground',
os.path.join(d, 'back.pdf'),
'output',
os.path.join(d, 'out.pdf'),
@@ -794,8 +804,8 @@ class Renderer:
new_pdf = PdfFileReader(buffer)
output = PdfFileWriter()
for page in new_pdf.pages:
bg_page = copy.copy(self.bg_pdf.getPage(0))
for i, page in enumerate(new_pdf.pages):
bg_page = copy.copy(self.bg_pdf.getPage(i))
bg_page.mergePage(page)
output.addPage(bg_page)