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#!/usr/bin/env python3 | ||
from io import BytesIO | ||
from pathlib import Path | ||
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import cairo | ||
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from nicegui import ui | ||
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PDF_PATH = Path('output.pdf') | ||
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def generate_svg() -> str: | ||
output = BytesIO() | ||
surface = cairo.SVGSurface(output, 200, 150) | ||
surface = cairo.SVGSurface(output, 300, 200) | ||
draw(surface) | ||
surface.finish() | ||
return output.getvalue().decode('utf-8') | ||
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def generate_pdf() -> bytes: | ||
output = BytesIO() | ||
surface = cairo.PDFSurface(output, 200, 150) | ||
surface = cairo.PDFSurface(output, 300, 200) | ||
draw(surface) | ||
surface.finish() | ||
return output.getvalue() | ||
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def draw(surface: cairo.SVGSurface): | ||
def draw(surface: cairo.SVGSurface) -> None: | ||
context = cairo.Context(surface) | ||
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context.select_font_face("Arial", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL) | ||
context.select_font_face('Arial', cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL) | ||
context.set_font_size(20) | ||
context.move_to(10, 40) | ||
context.show_text(f"{name_input.value}") | ||
context.show_text(name.value) | ||
context.move_to(10, 80) | ||
context.show_text(f"{email_input.value}") | ||
context.show_text(email.value) | ||
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def update(): | ||
def update() -> None: | ||
preview.content = generate_svg() | ||
Path('output.pdf').write_bytes(generate_pdf()) | ||
PDF_PATH.write_bytes(generate_pdf()) | ||
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with ui.row().classes('items-stretch gap-12'): | ||
with ui.column(): | ||
name_input = ui.input("Name", placeholder="Enter your name", on_change=update) | ||
email_input = ui.input("E-Mail", placeholder="Enter your E-Mail address", on_change=update) | ||
with ui.column(): | ||
preview = ui.html().classes('w-[400px] h-[300px] border-2 border-gray-500') | ||
with ui.row(): | ||
with ui.column(): | ||
ui.button("Download PDF", on_click=lambda: ui.download('output.pdf'))\ | ||
.bind_visibility_from(preview, 'content') | ||
name = ui.input('Name', placeholder='Enter your name', on_change=update) | ||
email = ui.input('E-Mail', placeholder='Enter your E-Mail address', on_change=update) | ||
preview = ui.html().classes('border-2 border-gray-500') | ||
update() | ||
ui.button('Download PDF', on_click=lambda: ui.download(PDF_PATH)).bind_visibility_from(name, 'value') | ||
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ui.run() |
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pycairo | ||
nicegui | ||
nicegui | ||
pycairo |