# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2017 OpenLP Developers #
# --------------------------------------------------------------------------- #
# This program is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the Free #
# Software Foundation; version 2 of the License. #
# #
# This program is distributed in the hope that it will be useful, but WITHOUT #
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
# more details. #
# #
# You should have received a copy of the GNU General Public License along #
# with this program; if not, write to the Free Software Foundation, Inc., 59 #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
###############################################################################
import logging
from PyQt5 import QtGui
from openlp.core.common import Settings, translate
from openlp.core.common.actions import ActionList
from openlp.core.lib import Plugin, StringContent, build_icon
from openlp.core.lib.db import Manager
from openlp.core.lib.theme import VerticalType
from openlp.core.lib.ui import create_action, UiStrings
from openlp.core.ui import AlertLocation
from openlp.plugins.alerts.forms import AlertForm
from openlp.plugins.alerts.lib import AlertsManager, AlertsTab
from openlp.plugins.alerts.lib.db import init_schema
log = logging.getLogger(__name__)
JAVASCRIPT = """
function show_alert(alerttext, position){
var text = document.getElementById('alert');
text.innerHTML = alerttext;
if(alerttext == '') {
text.style.visibility = 'hidden';
return 0;
}
if(position == ''){
position = getComputedStyle(text, '').verticalAlign;
}
switch(position)
{
case 'top':
text.style.top = '0px';
break;
case 'middle':
text.style.top = ((window.innerHeight - text.clientHeight) / 2)
+ 'px';
break;
case 'bottom':
text.style.top = (window.innerHeight - text.clientHeight)
+ 'px';
break;
}
text.style.visibility = 'visible';
return text.clientHeight;
}
function update_css(align, font, size, color, bgcolor){
var text = document.getElementById('alert');
text.style.fontSize = size + "pt";
text.style.fontFamily = font;
text.style.color = color;
text.style.backgroundColor = bgcolor;
switch(align)
{
case 'top':
text.style.top = '0px';
break;
case 'middle':
text.style.top = ((window.innerHeight - text.clientHeight) / 2)
+ 'px';
break;
case 'bottom':
text.style.top = (window.innerHeight - text.clientHeight)
+ 'px';
break;
}
}
"""
# TODO: Verify format() with variable templates
CSS = """
#alert {
position: absolute;
left: 0px;
top: 0px;
z-index: 10;
width: 100%%;
vertical-align: %s;
font-family: %s;
font-size: %spt;
color: %s;
background-color: %s;
word-wrap: break-word;
}
"""
HTML = """
<div id="alert" style="visibility:hidden"></div>
"""
__default_settings__ = {
'alerts/font face': QtGui.QFont().family(),
'alerts/font size': 40,
'alerts/db type': 'sqlite',
'alerts/db username': '',
'alerts/db password': '',
'alerts/db hostname': '',
'alerts/db database': '',
'alerts/location': AlertLocation.Bottom,
'alerts/background color': '#660000',
'alerts/font color': '#ffffff',
'alerts/timeout': 5
}
[docs]class AlertsPlugin(Plugin):
"""
The Alerts Plugin Class
"""
log.info('Alerts Plugin loaded')
def __init__(self):
"""
Class __init__ method
"""
super(AlertsPlugin, self).__init__('alerts', __default_settings__, settings_tab_class=AlertsTab)
self.weight = -3
self.icon_path = ':/plugins/plugin_alerts.png'
self.icon = build_icon(self.icon_path)
AlertsManager(self)
self.manager = Manager('alerts', init_schema)
self.alert_form = AlertForm(self)
[docs] def initialise(self):
"""
Initialise plugin
"""
log.info('Alerts Initialising')
super(AlertsPlugin, self).initialise()
self.tools_alert_item.setVisible(True)
action_list = ActionList.get_instance()
action_list.add_action(self.tools_alert_item, UiStrings().Tools)
[docs] def finalise(self):
"""
Tidy up on exit
"""
log.info('Alerts Finalising')
self.manager.finalise()
super(AlertsPlugin, self).finalise()
self.tools_alert_item.setVisible(False)
action_list = ActionList.get_instance()
action_list.remove_action(self.tools_alert_item, 'Tools')
[docs] def toggle_alerts_state(self):
"""
Switch the alerts state
"""
self.alerts_active = not self.alerts_active
Settings().setValue(self.settings_section + '/active', self.alerts_active)
[docs] def on_alerts_trigger(self):
"""
Start of the Alerts dialog triggered from the main menu.
"""
self.alert_form.load_list()
self.alert_form.exec()
[docs] @staticmethod
def about():
"""
Plugin Alerts about method
:return: text
"""
about_text = translate('AlertsPlugin', '<strong>Alerts Plugin</strong>'
'<br />The alert plugin controls the displaying of alerts on the display screen.')
return about_text
[docs] def set_plugin_text_strings(self):
"""
Called to define all translatable texts of the plugin
"""
# Name PluginList
self.text_strings[StringContent.Name] = {
'singular': translate('AlertsPlugin', 'Alert', 'name singular'),
'plural': translate('AlertsPlugin', 'Alerts', 'name plural')
}
# Name for MediaDockManager, SettingsManager
self.text_strings[StringContent.VisibleName] = {
'title': translate('AlertsPlugin', 'Alerts', 'container title')
}
[docs] @staticmethod
def get_display_javascript():
"""
Add Javascript to the main display.
"""
return JAVASCRIPT
[docs] def get_display_css(self):
"""
Add CSS to the main display.
"""
align = VerticalType.Names[self.settings_tab.location]
return CSS % (align, self.settings_tab.font_face, self.settings_tab.font_size, self.settings_tab.font_color,
self.settings_tab.background_color)
[docs] @staticmethod
def get_display_html():
"""
Add HTML to the main display.
"""
return HTML
[docs] def refresh_css(self, frame):
"""
Trigger an update of the CSS in the main display.
:param frame: The Web frame holding the page.
"""
align = VerticalType.Names[self.settings_tab.location]
frame.evaluateJavaScript('update_css("{align}", "{face}", "{size}", "{color}", '
'"{background}")'.format(align=align,
face=self.settings_tab.font_face,
size=self.settings_tab.font_size,
color=self.settings_tab.font_color,
background=self.settings_tab.background_color))