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pretalx-plugin-broadcast-tools/pretalx_broadcast_tools/exporter.py
2024-08-09 11:12:02 +02:00

348 lines
11 KiB
Python

from tempfile import NamedTemporaryFile
from django.utils.timezone import now
from pretalx.schedule.exporters import ScheduleData
from reportlab.lib import colors
from reportlab.lib.enums import TA_CENTER
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import ParagraphStyle, StyleSheet1
from reportlab.lib.units import mm
from reportlab.platypus import (
Flowable,
PageBreak,
Paragraph,
SimpleDocTemplate,
Spacer,
Table,
TableStyle,
)
from pretalx_broadcast_tools.utils.placeholders import placeholders
A4_WIDTH, A4_HEIGHT = A4
PAGE_PADDING = 10 * mm
class PDFInfoPage(Flowable):
def __init__(self, event, schedule, fahrplan_day, room_details, talk, style):
super().__init__()
self.event = event
self.schedule = schedule
self.day = fahrplan_day
self.room = room_details
self.talk = talk
self.style = style
self.y_position = PAGE_PADDING
@property
def _questions(self):
return {
int(i.strip())
for i in self.event.settings.broadcast_tools_pdf_questions_to_include.split(
","
)
if i
}
def _add(self, item, gap=2):
_, height = item.wrapOn(
self.canv, A4_WIDTH - 2 * PAGE_PADDING, A4_HEIGHT - 2 * PAGE_PADDING
)
self.y_position += height + gap * mm
item.drawOn(self.canv, PAGE_PADDING, -self.y_position)
def _checkbox_text(self, text, **kwargs):
item = Paragraph(text, **kwargs)
_, height = item.wrapOn(
self.canv, A4_WIDTH - 2 * PAGE_PADDING, A4_HEIGHT - 2 * PAGE_PADDING
)
self.y_position += height + 2 * mm
item.drawOn(self.canv, PAGE_PADDING + 1.3 * height, -self.y_position)
self.canv.rect(PAGE_PADDING, -self.y_position, height * 0.8, height * 0.8)
def _question_text(self, question, answer, **kwargs):
item = Paragraph(question, **kwargs)
_, height = item.wrapOn(
self.canv, A4_WIDTH - 2 * PAGE_PADDING, A4_HEIGHT - 2 * PAGE_PADDING
)
self.y_position += height + 2 * mm
item.drawOn(self.canv, PAGE_PADDING, -self.y_position)
item = Paragraph(answer, **kwargs)
_, height = item.wrapOn(
self.canv, A4_WIDTH - 3 * PAGE_PADDING, A4_HEIGHT - 2 * PAGE_PADDING
)
self.y_position += height + 2 * mm
item.drawOn(self.canv, 2 * PAGE_PADDING, -self.y_position)
def _space(self):
self._add(Spacer(1, PAGE_PADDING / 2))
def draw(self):
if hasattr(self.talk, "local_start"):
talk_start = self.talk.local_start
else:
talk_start = self.talk.start.astimezone(self.event.tz)
if hasattr(self.talk, "local_end"):
talk_end = self.talk.local_end
else:
talk_end = self.talk.end.astimezone(self.event.tz)
# add some information horizontally to the side of the page
self.canv.saveState()
self.canv.rotate(90)
self.canv.setFont("Helvetica", 12)
self.canv.drawString(
-(A4_HEIGHT - (PAGE_PADDING / 3)),
-(PAGE_PADDING / 3),
" | ".join(
[
self.talk.submission.code,
self.talk.submission.submission_type.name.localize(
self.event.locale
),
self.event.name.localize(self.event.locale),
talk_start.isoformat(),
f"Day {self.day['index']}",
self.room["name"].localize(self.event.locale),
f"Schedule {self.schedule.version}",
],
),
)
self.canv.restoreState()
if self.talk.submission.do_not_record:
self._add(
Paragraph("DO NOT RECORD - DO NOT STREAM", style=self.style["Warning"]),
gap=0,
)
self._space()
self._add(
Paragraph(
" | ".join(
[
self.event.name.localize(self.event.locale),
self.room["name"].localize(self.event.locale),
talk_start.strftime("%F"),
f'{talk_start.strftime("%T")} - {talk_end.strftime("%T")}',
],
),
style=self.style["Meta"],
)
)
self._add(
Paragraph(self.talk.submission.title, style=self.style["Title"]), gap=0
)
self._space()
for spk in self.talk.submission.speakers.all():
self._checkbox_text(
spk.get_display_name(),
style=self.style["Speaker"],
)
self._space()
self._add(
Table(
[
(
"Duration",
"Language",
"Type",
"Code",
),
(
self.talk.export_duration,
self.talk.submission.content_locale,
self.talk.submission.submission_type.name,
self.talk.submission.code,
),
],
colWidths=30 * mm,
style=TableStyle(
[
("ALIGN", (0, 0), (-1, -1), "CENTER"),
("VALIGN", (0, 0), (-1, -1), "TOP"),
("INNERGRID", (0, 0), (-1, -1), 0.25, colors.black),
("BOX", (0, 0), (-1, -1), 0.25, colors.black),
]
),
)
)
if self.talk.submission.abstract:
self._add(
Paragraph(
self.talk.submission.abstract,
style=self.style["Abstract"],
)
)
if self.event.settings.broadcast_tools_pdf_additional_content:
self._space()
self._add(
Paragraph(
self.event.settings.broadcast_tools_pdf_additional_content.format(
**placeholders(self.schedule, self.talk)
),
style=self.style["Meta"],
)
)
if self.talk.submission.answers and self._questions:
self._space()
self._add(
Paragraph(
"Questions",
style=self.style["Heading"],
)
)
for answer in self.talk.submission.answers.order_by("question"):
if answer.question.id not in self._questions:
continue
self._question_text(
answer.question.question.localize(self.event.locale),
answer.answer,
style=self.style["Question"],
)
if self.talk.submission.notes:
self._space()
self._add(
Paragraph(
"Notes",
style=self.style["Heading"],
)
)
for line in self.talk.submission.notes.splitlines():
line = line.strip()
if not line:
continue
self._add(
Paragraph(
line,
style=self.style["Notes"],
)
)
if (
self.talk.submission.internal_notes
and self.event.settings.broadcast_tools_pdf_show_internal_notes
):
self._space()
self._add(
Paragraph(
"Internal Notes",
style=self.style["Heading"],
)
)
for line in self.talk.submission.internal_notes.splitlines():
line = line.strip()
if not line:
continue
self._add(
Paragraph(
line,
style=self.style["Notes"],
)
)
class PDFExporter(ScheduleData):
identifier = "broadcast_pdf"
verbose_name = "Broadcast Tools PDF"
public = False
show_qrcode = False
icon = "fa-file-pdf"
def _add_pages(self, doc):
style = self._style()
pages = []
for fahrplan_day in self.data:
for room_details in fahrplan_day["rooms"]:
for talk in room_details["talks"]:
if (
talk.submission.do_not_record
and self.event.settings.broadcast_tools_pdf_ignore_do_not_record
):
continue
pages.append(
PDFInfoPage(
self.event,
self.schedule,
fahrplan_day,
room_details,
talk,
style,
)
)
pages.append(PageBreak())
return pages
def _style(self):
stylesheet = StyleSheet1()
stylesheet.add(
ParagraphStyle(name="Normal", fontName="Helvetica", fontSize=12, leading=14)
)
stylesheet.add(
ParagraphStyle(
name="Title", fontName="Helvetica-Bold", fontSize=20, leading=24
)
)
stylesheet.add(
ParagraphStyle(
name="Speaker", fontName="Helvetica-Oblique", fontSize=12, leading=14
)
)
stylesheet.add(
ParagraphStyle(name="Meta", fontName="Helvetica", fontSize=14, leading=16)
)
stylesheet.add(
ParagraphStyle(
name="Heading", fontName="Helvetica-Bold", fontSize=14, leading=16
)
)
stylesheet.add(
ParagraphStyle(
name="Question", fontName="Helvetica", fontSize=12, leading=14
)
)
stylesheet.add(
ParagraphStyle(
name="Abstract", fontName="Helvetica-Oblique", fontSize=10, leading=12
)
)
stylesheet.add(
ParagraphStyle(name="Notes", fontName="Helvetica", fontSize=12, leading=14)
)
stylesheet.add(
ParagraphStyle(
name="Warning",
fontName="Helvetica-Bold",
fontSize=20,
leading=24,
alignment=TA_CENTER,
textColor=colors.red,
)
)
return stylesheet
def render(self, *args, **kwargs):
with NamedTemporaryFile(suffix=".pdf") as f:
doc = SimpleDocTemplate(
f.name,
pagesize=A4,
rightMargin=0,
leftMargin=0,
topMargin=0,
bottomMargin=0,
)
doc.build(self._add_pages(doc))
f.seek(0)
timestamp = now().strftime("%Y-%m-%d-%H%M")
return (
f"{self.event.slug}_broadcast_tools_{timestamp}.pdf",
"application/pdf",
f.read(),
)