openlp/demo.py

# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4

###############################################################################
# OpenLP - Open Source Lyrics Projection                                      #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2009 Raoul Snyman                                        #
# Portions copyright (c) 2008-2009 Martin Thompson, Tim Bentley, Carsten      #
# Tinggaard, Jon Tibble, Jonathan Corwin, Maikel Stuivenberg, Scott Guerrieri #
# --------------------------------------------------------------------------- #
# 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 sys
import time

from PyQt4 import QtGui, QtCore

from openlp.core import Renderer
from openlp.theme import Theme

words="""How sweet the name of Jesus sounds
In a believer's ear!
It soothes his sorrows, heals his wounds,
And drives away his fear.
"""

class TstFrame(QtGui.QMainWindow):
    """
    We simply derive a new class of QMainWindow
    """

    def __init__(self, *args, **kwargs):
        """
        Create the DemoPanel.
        """
        QtGui.QMainWindow.__init__(self)
        self.resize(1024, 768)
        self.size = (1024, 768)
        self.v = 0
        self._font = QtGui.QFont(u'Decorative', 32)
        self.framecount = 0
        self.totaltime = 0
        self.dir = 1
        self.y = 1
        self.frame = QtGui.QFrame()
        self.setCentralWidget(self.frame)
        self.r = Renderer()
        self.r.set_theme(Theme(u'demo_theme.xml'))
        self.r.set_text_rectangle(self.frame.frameRect())
        self.r.set_paint_dest(self)
        self.r.set_words_openlp(words)

    def timerEvent(self, event):
        """
        Update the form on a timer event.

        ``event``
            The event which triggered this update.
        """
        self.update()

    def paintEvent(self, event):
        """
        Repaint the canvas.

        ``event``
            The event which triggered this repaint.
        """
        self.r.set_text_rectangle(self.frame.frameRect())
        self.r.scale_bg_image()
        t1 = time.clock()
        self.r.render_screen(0)
        t2 = time.clock()
        deltat = t2 - t1
        self.totaltime += deltat
        self.framecount += 1
        print "Timing result: %5.3ffps" %(self.framecount/float(self.totaltime))


class Demo(object):
    """
    The demo application itself.
    """
    def __init__(self):
        """
        Construct the application.
        """
        app = QtGui.QApplication(sys.argv)
        main = TstFrame()
        main.show()
        sys.exit(app.exec_())


if __name__=="__main__":
    """
    Run the demo.
    """
    t = Demo()