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# -*- coding: utf-8 -*-
# Copyright 2012 Ariel Calzada - ariel@activitycentral.com
#
# 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, either version 2 of the License, or
# (at your option) any later version.
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
"""
Screencast Activity: An activity for producing XO tutorials.
Based on http://git.sugarlabs.org/screencast
UI Component
"""
# Toolbar
from sugar.activity.activity import ActivityToolbox
# GTK
import gtk
# Sugar graphics widget
from sugar.graphics.combobox import ComboBox
# GObject used for subclassing and finally for managing signals
import gobject
# Alert popup
from sugar.graphics.alert import NotifyAlert
import time
class ScreencastUI(gobject.GObject):
""" Screencast UI
"""
# Attributes
_activity = None
_toolbar = None
_toolbox = None
_mainbox = None
_buttonsbox = None
_recordButton = None
_stopButton = None
_soundandquality = None
_soundCheck = None
_qualityCombo = None
_mainboxAlign = None
_statusbar = None
_progressbar = None
# Custom signals
__gsignals__ = {
'record-button-clicked-signal': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ()),
'stop-button-clicked-signal': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE, ()),
}
def __init__(self, activity):
""" Constructor
"""
super(ScreencastUI, self).__init__()
self._activity = activity
def buildGUI(self):
""" Build GUI
"""
# Toolbar
self.buildToolbar()
# Sound checkbox and quality combobox
self.buildSoundAndQuality()
# Buttons
self.buildButtons()
# Buttons
self.buildButtons()
# Progress bar
self.buildProgressBar()
# Status bar
self.buildStatusBar()
# we do not have collaboration features
# make the share option insensitive
self.max_participants = 1
# Add items to mainbox
self._mainbox = gtk.VBox()
self._mainbox.pack_start(self._soundandquality, expand=True, fill=False, padding=20)
self._mainbox.pack_start(self._buttonsbox, expand=True, fill=False, padding=20)
self._mainbox.pack_start(self._progressbar, expand=True, fill=False, padding=20)
self._mainbox.pack_start(self._statusbar, expand=True, fill=False, padding=20)
# Align mainbox
self._mainboxAlign = gtk.Alignment(0.5, 0.5, 0, 0)
self._mainboxAlign.add(self._mainbox)
# Set canvas with box alignment
self._activity.set_canvas(self._mainboxAlign)
def buildToolbar(self):
""" Build GUI Toolbar
"""
self._toolbox = ActivityToolbox(self._activity)
self._toolbar = self._toolbox.get_activity_toolbar()
# Remove share button
self._toolbar.remove(self._toolbar.share)
self._toolbar.share = None
self._activity.set_toolbox(self._toolbox)
def buildSoundAndQuality(self):
""" Build sound checkbox and quality combobox
"""
self._soundandquality = gtk.HBox(spacing=50)
self._soundCheck = gtk.CheckButton(label="Record sound")
self._soundCheck.set_active(True)
self._soundandquality.add(self._soundCheck)
self._qualityCombo = ComboBox()
self._qualityCombo.append_item("0", " High quality video")
self._qualityCombo.append_item("1", " Medium quality video")
self._qualityCombo.append_item("2", " Low quality video")
self._qualityCombo.set_active(2)
self._soundandquality.add(self._qualityCombo)
def buildButtons(self):
""" Build record and stop buttons
"""
# Record button
self._recordButton = gtk.Button("Record")
self._recordButton.connect("clicked", self.recordButtonClicked)
self._recordButton.set_size_request(150, 150)
recordButtonIcon = gtk.Image()
recordButtonIcon.set_from_icon_name("media-record", -1)
self._recordButton.set_image(recordButtonIcon)
# Stop button
self._stopButton = gtk.Button("Stop")
self._stopButton.connect("clicked", self.stopButtonClicked)
self._stopButton.set_size_request(150, 150)
self._stopButton.set_sensitive(False)
stopButtonIcon = gtk.Image()
stopButtonIcon.set_from_icon_name("media-playback-stop", -1)
self._stopButton.set_image(stopButtonIcon)
# Buttons hbox
self._buttonsbox = gtk.HBox()
self._buttonsbox.pack_start(self._recordButton, expand=False, padding=40)
self._buttonsbox.pack_start(self._stopButton, expand=False, padding=40)
def showGUI(self):
""" Show GUI
"""
self._activity.show_all()
self._progressbar.hide()
def recordButtonClicked(self, widget):
""" Clicked event handler for record button
"""
self.emit('record-button-clicked-signal')
def stopButtonClicked(self, widget):
""" Clicked event handler for stop button
"""
self.emit('stop-button-clicked-signal')
def changeButtonsState(self, activate="record"):
""" Change sensitive property for the buttons
"""
if activate == "record":
self._recordButton.set_sensitive(False)
self._soundCheck.set_sensitive(False)
self._qualityCombo.set_sensitive(False)
self._stopButton.set_sensitive(True)
self._statusbar.set_text("Status: Recording")
elif activate == "encode":
self._stopButton.set_sensitive(False)
self._recordButton.set_sensitive(False)
self._soundCheck.set_sensitive(False)
self._qualityCombo.set_sensitive(False)
self._statusbar.set_text("Status: Encoding")
elif activate == "wait":
self._recordButton.set_sensitive(False)
self._soundCheck.set_sensitive(False)
self._qualityCombo.set_sensitive(False)
self._stopButton.set_sensitive(False)
self._statusbar.set_text("Status: Waiting")
else:
self._stopButton.set_sensitive(False)
self._recordButton.set_sensitive(True)
self._soundCheck.set_sensitive(True)
self._qualityCombo.set_sensitive(True)
self._statusbar.set_text("Status: Stopped")
def isSoundCheckActive(self):
""" Sound checked
"""
return self._soundCheck.get_active()
def getCurrentQuality(self):
""" Get current video quality
"""
return self._qualityCombo.get_active()
def buildProgressBar(self):
""" Progress bar
"""
self._progressbar = gtk.ProgressBar(adjustment=None)
self._progressbar.set_fraction(0)
self._progressbar.set_text("0% complete")
def buildStatusBar(self):
""" Status bar
"""
self._statusbar = gtk.Label("Status: Stopped")
def changeStatusbarText(self, text):
""" Change text of statusbar
"""
self._statusbar.set_text(text)
def showProgressbar(self):
""" Show the progressbar
"""
self._progressbar.show()
def hideProgressbar(self):
""" Hide the progressbar
"""
self._progressbar.hide()
def updateProgressbar(self, percentage):
""" Update percentage value
"""
self._progressbar.set_fraction(percentage/100.0)
self._progressbar.set_text("%d%%"%int(percentage)+' complete')
def alert(self, title, text=None):
""" Alert popup
"""
alert = NotifyAlert(timeout=10)
alert.props.title = title
alert.props.msg = text
self._activity.add_alert(alert)
alert.connect('response', self.alert_cancel_cb)
alert.show()
def alert_cancel_cb(self, alert, response_id):
""" Destroy alert popup
"""
self._activity.remove_alert(alert)
def waitSomeTime(self,t):
""" Wait some seconds
"""
time_start = time.time()
time_end = (time_start + 5)
while time_end > time.time():
while gtk.events_pending():
gtk.main_iteration()
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