forked from openlp/openlp
121 lines
5.4 KiB
Python
121 lines
5.4 KiB
Python
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
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###############################################################################
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# OpenLP - Open Source Lyrics Projection #
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# --------------------------------------------------------------------------- #
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# Copyright (c) 2008-2010 Raoul Snyman #
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# Portions copyright (c) 2008-2010 Tim Bentley, Jonathan Corwin, Michael #
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# Gorven, Scott Guerrieri, Christian Richter, Maikel Stuivenberg, Martin #
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# Thompson, Jon Tibble, Carsten Tinggaard #
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# --------------------------------------------------------------------------- #
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# This program is free software; you can redistribute it and/or modify it #
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# under the terms of the GNU General Public License as published by the Free #
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# Software Foundation; version 2 of the License. #
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# #
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# This program is distributed in the hope that it will be useful, but WITHOUT #
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for #
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# more details. #
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# #
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# You should have received a copy of the GNU General Public License along #
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# with this program; if not, write to the Free Software Foundation, Inc., 59 #
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# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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###############################################################################
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import logging
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from PyQt4 import QtCore, QtGui
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from openlp.core.lib import Receiver
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log = logging.getLogger(__name__)
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class AlertsManager(QtCore.QObject):
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"""
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AlertsTab is the Alerts settings tab in the settings dialog.
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"""
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log.info(u'Alert Manager loaded')
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def __init__(self, parent):
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QtCore.QObject.__init__(self)
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self.parent = parent
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self.timer_id = 0
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self.alertList = []
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'flush_alert'), self.generateAlert)
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'alert_text'), self.displayAlert)
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'screen_changed'), self.screenChanged)
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QtCore.QObject.connect(Receiver.get_receiver(),
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QtCore.SIGNAL(u'config_updated'), self.screenChanged)
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def screenChanged(self):
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log.debug(u'screen changed')
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self.screen = self.parent.maindisplay.screen
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self.alertTab = self.parent.alertsTab
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self.font = QtGui.QFont()
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self.font.setFamily(self.alertTab.font_face)
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self.font.setBold(True)
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self.font.setPointSize(self.alertTab.font_size)
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self.metrics = QtGui.QFontMetrics(self.font)
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self.alertHeight = self.metrics.height() + 4
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if self.alertTab.location == 0:
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self.alertScreenPosition = 0
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else:
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self.alertScreenPosition = self.screen[u'size'].height() - self.alertHeight
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self.alertHeight = self.screen[u'size'].height() - self.alertScreenPosition
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self.parent.maindisplay.setAlertSize(self.alertScreenPosition, self.alertHeight)
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def displayAlert(self, text=u''):
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"""
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Called from the Alert Tab to display an alert
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``text``
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display text
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"""
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log.debug(u'display alert called %s' % text)
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self.parent.maindisplay.parent.StatusBar.showMessage(u'')
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self.alertList.append(text)
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if self.timer_id != 0 or self.parent.maindisplay.mediaLoaded:
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self.parent.maindisplay.parent.StatusBar.showMessage(\
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self.trUtf8(u'Alert message created and delayed'))
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return
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self.generateAlert()
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def generateAlert(self):
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log.debug(u'Generate Alert called')
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if len(self.alertList) == 0:
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return
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text = self.alertList.pop(0)
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alertTab = self.parent.alertsTab
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alertframe = \
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QtGui.QPixmap(self.screen[u'size'].width(), self.alertHeight)
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alertframe.fill(QtCore.Qt.transparent)
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painter = QtGui.QPainter(alertframe)
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painter.fillRect(alertframe.rect(), QtCore.Qt.transparent)
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painter.setRenderHint(QtGui.QPainter.Antialiasing)
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painter.fillRect(
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QtCore.QRect(
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0, 0, alertframe.rect().width(),
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alertframe.rect().height()),
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QtGui.QColor(self.alertTab.bg_color))
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painter.setFont(self.font)
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painter.setPen(QtGui.QColor(self.alertTab.font_color))
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x, y = (0, 2)
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painter.drawText(
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x, y + self.metrics.height() - self.metrics.descent() - 1, text)
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painter.end()
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self.parent.maindisplay.addAlertImage(alertframe)
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# check to see if we have a timer running
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if self.timer_id == 0:
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self.timer_id = self.startTimer(int(alertTab.timeout) * 1000)
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def timerEvent(self, event):
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if event.timerId() == self.timer_id:
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self.parent.maindisplay.addAlertImage(None, True)
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self.killTimer(self.timer_id)
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self.timer_id = 0
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self.generateAlert()
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