OpenSlides/openslides/projector/signals.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
openslides.projector.signals
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signals for the projector app.
:copyright: 20112013 by OpenSlides team, see AUTHORS.
:license: GNU GPL, see LICENSE for more details.
"""
from time import time
from django.contrib.staticfiles.templatetags.staticfiles import static
from django.core.context_processors import csrf
from django.dispatch import receiver, Signal
from django.template.loader import render_to_string
from openslides.config.api import config, ConfigPage, ConfigVariable
from openslides.config.signals import config_signal
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from .projector import Overlay
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projector_overlays = Signal(providing_args=['request'])
@receiver(config_signal, dispatch_uid='setup_projector_config_variables')
def config_variables(sender, **kwargs):
"""
Projector config variables for OpenSlides. They are not shown on a
config page.
"""
# The active slide. The config-value is a dictonary with at least the entry
# 'callback'.
projector = ConfigVariable(
name='projector_active_slide',
default_value={'callback': None})
projector_message = ConfigVariable(
name='projector_message',
default_value='')
countdown_time = ConfigVariable(
name='countdown_time',
default_value=60)
countdown_start_stamp = ConfigVariable(
name='countdown_start_stamp',
default_value=0)
countdown_pause_stamp = ConfigVariable(
name='countdown_pause_stamp',
default_value=0)
countdown_state = ConfigVariable(
name='countdown_state',
default_value='inactive')
projector_scale = ConfigVariable(
name='projector_scale',
default_value=0)
projector_scroll = ConfigVariable(
name='projector_scroll',
default_value=0)
projector_js_cache = ConfigVariable(
name='projector_js_cache',
default_value={})
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projector_active_overlays = ConfigVariable(
name='projector_active_overlays',
default_value=[])
projector_pdf_fullscreen = ConfigVariable(
name='pdf_fullscreen',
default_value=False)
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return ConfigPage(
title='No title here', url='bar', required_permission=None, variables=(
projector, projector_message,
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countdown_time, countdown_start_stamp, countdown_pause_stamp,
countdown_state, projector_scale, projector_scroll,
projector_active_overlays, projector_js_cache,
projector_pdf_fullscreen))
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@receiver(projector_overlays, dispatch_uid="projector_countdown")
def countdown(sender, **kwargs):
"""
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Receiver for the countdown.
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"""
name = 'projector_countdown'
request = kwargs.get('request', None)
def get_widget_html():
"""
Returns the the html-code to show in the overly-widget.
"""
context = {
'countdown_time': config['countdown_time'],
'countdown_state': config['countdown_state']}
context.update(csrf(request))
return render_to_string('projector/overlay_countdown_widget.html',
context)
def get_projector_js():
"""
Returns JavaScript for the projector
"""
start = int(config['countdown_start_stamp'])
duration = int(config['countdown_time'])
pause = int(config['countdown_pause_stamp'])
state = config['countdown_state']
return {
'load_file': static('javascript/countdown.js'),
'projector_countdown_start': start,
'projector_countdown_duration': duration,
'projector_countdown_pause': pause,
'projector_countdown_state': state}
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def get_projector_html():
"""
Returns an html-code to show on the projector.
"""
return render_to_string('projector/overlay_countdown_projector.html')
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return Overlay(name, get_widget_html, get_projector_html, get_projector_js)
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@receiver(projector_overlays, dispatch_uid="projector_overlay_message")
def projector_overlay_message(sender, **kwargs):
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"""
Receiver to show the overlay_message on the projector or the form in the
overlay-widget on the dashboard.
"""
name = 'projector_message'
request = kwargs.get('request', None)
def get_widget_html():
"""
Returns the the html-code to show in the overly-widget.
"""
return render_to_string('projector/overlay_message_widget.html', csrf(request))
def get_projector_html():
"""
Returns an html-code to show on the projector.
"""
if config['projector_message']:
return render_to_string('projector/overlay_message_projector.html',
{'message': config['projector_message']})
return None
return Overlay(name, get_widget_html, get_projector_html)
@receiver(projector_overlays, dispatch_uid="projector_clock")
def projector_clock(sender, **kwargs):
"""
Receiver to show the clock on the projector.
"""
name = 'projector_clock'
def get_projector_html():
"""
Returns the html-code for the clock.
"""
return render_to_string('projector/overlay_clock_projector.html')
def get_projector_js():
"""
Returns JavaScript for the projector
"""
return {'load_file': static('javascript/clock.js'),
'server_time': int(time())}
return Overlay(name, None, get_projector_html, get_projector_js,
allways_active=True)