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from __future__ import annotations
from pathlib import Path
import tempfile
from trame.app import get_server
from trame.app.file_upload import ClientFile
from trame.ui.vuetify3 import SinglePageLayout
from trame.widgets import vuetify3
import pyvista as pv
from pyvista.trame.ui import plotter_ui
# -----------------------------------------------------------------------------
# Trame setup
# -----------------------------------------------------------------------------
pv.OFF_SCREEN = True
server = get_server(client_type='vue3')
state, ctrl = server.state, server.controller
state.trame__title = 'File Viewer'
ctrl.on_server_ready.add(ctrl.view_update)
# -----------------------------------------------------------------------------
# Callbacks
# -----------------------------------------------------------------------------
pl = pv.Plotter()
@server.state.change('file_exchange')
def handle(file_exchange, **kwargs): # noqa: ARG001
# Vuetify3 File Input always returns list
if file_exchange and len(file_exchange) > 0:
file = ClientFile(file_exchange[0])
if file.content:
print(file.info)
bytes_ = file.content
with tempfile.NamedTemporaryFile(suffix=file.name) as path:
with Path(path.name).open('wb') as f:
f.write(bytes_)
ds = pv.read(path.name)
pl.add_mesh(ds, name=file.name)
pl.reset_camera()
else:
pl.clear_actors()
pl.reset_camera()
# -----------------------------------------------------------------------------
# Web App setup
# -----------------------------------------------------------------------------
state.trame__title = 'File Viewer'
with SinglePageLayout(server) as layout:
layout.title.set_text('File Viewer')
with layout.toolbar:
vuetify3.VSpacer()
vuetify3.VFileInput(
show_size=True,
chips=True,
truncate_length=25,
v_model=('file_exchange', None),
density='compact',
hide_details=True,
style='max-width: 300px;',
)
vuetify3.VProgressLinear(
indeterminate=True,
absolute=True,
bottom=True,
active=('trame__busy',),
)
with layout.content:
with vuetify3.VContainer(
fluid=True,
classes='pa-0 fill-height',
style='position: relative;',
):
# Use PyVista UI template for Plotters
view = plotter_ui(pl)
ctrl.view_update = view.update
server.start()
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