forked from sugarlabs/jukebox-activity
/
controls.py
355 lines (290 loc) · 13.4 KB
/
controls.py
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# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
# Copyright (C) 2013 Manuel Kaufmann <humitos@gmail.com>
import logging
from gi.repository import Gtk
from gi.repository import Gst
from gi.repository import GObject
from gettext import gettext as _
from sugar3 import mime
from sugar3.graphics.toolbutton import ToolButton
from sugar3.graphics.objectchooser import ObjectChooser
class Controls(GObject.GObject):
"""Class to create the Control (play, back, forward,
add, remove, etc) toolbar"""
SCALE_UPDATE_INTERVAL = 1000
SCALE_DURATION_TEXT = 100
RESEEK_TIMEOUT = 250 # ms
def __init__(self, activity, main_toolbar, secondary_toolbar):
GObject.GObject.__init__(self)
self.activity = activity
self.toolbar = main_toolbar
self.secondary_toolbar = secondary_toolbar
self._scale_update_id = -1
self._scale_value_changed_id = -1
self._scale_reseek_timeout_id = -1
self.open_button = ToolButton('list-add')
self.open_button.set_tooltip(_('Add track'))
self.open_button.show()
self.open_button.connect('clicked', self.__open_button_clicked_cb)
self.toolbar.insert(self.open_button, -1)
erase_playlist_entry_btn = ToolButton(icon_name='list-remove')
erase_playlist_entry_btn.set_tooltip(_('Remove track'))
erase_playlist_entry_btn.connect(
'clicked', self.__erase_playlist_entry_clicked_cb)
self.toolbar.insert(erase_playlist_entry_btn, -1)
self._spacer = Gtk.SeparatorToolItem()
self._spacer.props.draw = True
self._spacer.set_expand(False)
self.toolbar.insert(self._spacer, -1)
self._spacer.show()
self.prev_button = ToolButton('player_rew')
self.prev_button.set_tooltip(_('Previous'))
self.prev_button.show()
self.prev_button.connect('clicked', self.__prev_button_clicked_cb)
self.toolbar.insert(self.prev_button, -1)
self.pause_image = Gtk.Image.new_from_stock(Gtk.STOCK_MEDIA_PAUSE,
Gtk.IconSize.BUTTON)
self.pause_image.show()
self.play_image = Gtk.Image.new_from_stock(Gtk.STOCK_MEDIA_PLAY,
Gtk.IconSize.BUTTON)
self.play_image.show()
self.button = Gtk.ToolButton()
self.button.set_icon_widget(self.play_image)
self.button.set_property('can-default', True)
self.button.show()
self.button.connect('clicked', self._button_clicked_cb)
self.toolbar.insert(self.button, -1)
self.next_button = ToolButton('player_fwd')
self.next_button.set_tooltip(_('Next'))
self.next_button.show()
self.next_button.connect('clicked', self.__next_button_clicked_cb)
self.toolbar.insert(self.next_button, -1)
self._current_time = Gtk.ToolItem()
self.current_time_label = Gtk.Label(label='')
self._current_time.add(self.current_time_label)
self._current_time.show()
self.toolbar.insert(self._current_time, -1)
self.adjustment = Gtk.Adjustment(0.0, 0.00, 100.0, 0.1, 1.0, 1.0)
self.hscale = Gtk.Scale(orientation=Gtk.Orientation.HORIZONTAL,
adjustment=self.adjustment)
self.hscale.set_draw_value(False)
# FIXME: this seems to be deprecated
# self.hscale.set_update_policy(Gtk.UPDATE_CONTINUOUS)
logging.debug("FIXME: AttributeError: 'Scale' object has no "
"attribute 'set_update_policy'")
self.hscale.connect('button-press-event',
self.__scale_button_press_cb)
self.hscale.connect('button-release-event',
self.__scale_button_release_cb)
self.scale_item = Gtk.ToolItem()
self.scale_item.set_expand(True)
self.scale_item.add(self.hscale)
self.toolbar.insert(self.scale_item, -1)
self._total_time = Gtk.ToolItem()
self.total_time_label = Gtk.Label(label='')
self._total_time.add(self.total_time_label)
self._total_time.show()
self.toolbar.insert(self._total_time, -1)
self.activity.connect('playlist-finished', self.__playlist_finished_cb)
self.activity.player.connect('play', self.__player_play)
def update_layout(self, landscape=True):
if landscape:
self._remove_controls(self.secondary_toolbar)
self._add_controls(self.toolbar)
else:
self._remove_controls(self.toolbar)
self._add_controls(self.secondary_toolbar)
self._spacer.hide()
def _remove_controls(self, toolbar):
for control in [self._spacer, self.prev_button,
self.button, self.next_button,
self._current_time, self.scale_item,
self._total_time]:
if control in toolbar:
toolbar.remove(control)
def _add_controls(self, toolbar):
for control in [self._spacer, self.prev_button,
self.button, self.next_button,
self._current_time, self.scale_item,
self._total_time]:
if not control in toolbar:
toolbar.insert(control, -1)
control.show()
def __player_play(self, widget):
if self._scale_update_id == -1:
self._scale_update_id = GObject.timeout_add(
self.SCALE_UPDATE_INTERVAL, self.__update_scale_cb)
# We need to wait for GstPlayer to load the stream's duration
GObject.timeout_add(self.SCALE_DURATION_TEXT,
self.__set_scale_duration)
self.set_enabled()
self.set_button_pause()
def __set_scale_duration(self):
success, self.p_position, self.p_duration = \
self.activity.player.query_position()
if success and self.p_duration != Gst.CLOCK_TIME_NONE:
seconds = self.p_duration * 10 ** -9
time = '%2d:%02d' % (int(seconds / 60), int(seconds % 60))
self.total_time_label.set_text(time)
# Once we set the total_time we don't need to change it
# until a new stream is played
return False
else:
# We don't have the stream's duration yet, we need to call
# this method again
return True
def __open_button_clicked_cb(self, widget):
self.show_picker_cb()
def __erase_playlist_entry_clicked_cb(self, widget):
self.activity.playlist_widget.delete_selected_items()
self.check_if_next_prev()
def show_picker_cb(self, button=None):
# optional parameter button is used when called from activity.py
# emptypanel big button
jobject = None
chooser = ObjectChooser(self.activity,
what_filter=mime.GENERIC_TYPE_AUDIO)
try:
result = chooser.run()
if result == Gtk.ResponseType.ACCEPT:
jobject = chooser.get_selected_object()
if jobject and jobject.file_path:
logging.info('Adding %s', jobject.file_path)
self.activity.playlist_widget.load_file(jobject)
self.check_if_next_prev()
self.activity._switch_canvas(False)
self.activity._view_toolbar._show_playlist.set_active(
True)
finally:
if jobject is not None:
jobject.destroy()
def __prev_button_clicked_cb(self, widget):
self.activity.songchange('prev')
def __next_button_clicked_cb(self, widget):
self.activity.songchange('next')
def check_if_next_prev(self):
current_playing = self.activity.playlist_widget.get_current_playing()
if len(self.activity.playlist_widget._items) == 0:
# There is no media in the playlist
self.prev_button.set_sensitive(False)
self.button.set_sensitive(False)
self.next_button.set_sensitive(False)
else:
self.button.set_sensitive(True)
if current_playing == 0:
self.prev_button.set_sensitive(False)
else:
self.prev_button.set_sensitive(True)
items = len(self.activity.playlist_widget._items)
if current_playing == items - 1:
self.next_button.set_sensitive(False)
else:
self.next_button.set_sensitive(True)
def _button_clicked_cb(self, widget):
self.set_enabled()
if self.activity.player.is_playing():
self.activity.player.pause()
self.set_button_play()
GObject.source_remove(self._scale_update_id)
self._scale_update_id = -1
else:
if self.activity.player.error:
self.set_disabled()
else:
if self.activity.player.player.props.current_uri is None:
# There is no stream selected to be played
# yet. Select the first one
available = self.activity.playlist_widget.\
_items[0]['available']
if available:
path = self.activity.playlist_widget._items[0]['path']
self.activity.playlist_widget.emit(
'play-index', 0, path)
self.activity.playlist_widget.set_current_playing(0)
else:
self.activity.player.play()
self.activity._switch_canvas(True)
self._scale_update_id = GObject.timeout_add(
self.SCALE_UPDATE_INTERVAL, self.__update_scale_cb)
def set_button_play(self):
self.button.set_icon_widget(self.play_image)
def set_button_pause(self):
self.button.set_icon_widget(self.pause_image)
def set_disabled(self):
self.button.set_sensitive(False)
self.scale_item.set_sensitive(False)
self.hscale.set_sensitive(False)
def set_enabled(self):
self.button.set_sensitive(True)
self.scale_item.set_sensitive(True)
self.hscale.set_sensitive(True)
def __scale_button_press_cb(self, widget, event):
self.button.set_sensitive(False)
self._was_playing = self.activity.player.is_playing()
if self._was_playing:
self.activity.player.pause()
# don't timeout-update position during seek
if self._scale_update_id != -1:
GObject.source_remove(self._scale_update_id)
self._scale_update_id = -1
# make sure we get changed notifies
if self._scale_value_changed_id == -1:
self._scale_value_changed_id = self.hscale.connect(
'value-changed', self.__scale_value_changed_cb)
def __scale_value_changed_cb(self, scale):
if self._scale_reseek_timeout_id != -1:
GObject.source_remove(self._scale_reseek_timeout_id)
self._scale_reseek_timeout_id = GObject.timeout_add(
self.RESEEK_TIMEOUT, self._reseek)
def _reseek(self):
self._scale_reseek_timeout_id = -1
location = long(self.activity.control.hscale.get_value() *
self.p_duration / 100) # in ns
self.activity.player.seek(location)
# Allow for a preroll
self.activity.player.get_state(timeout=50 * Gst.MSECOND) # 50 ms
return False
def __scale_button_release_cb(self, widget, event):
if self._scale_reseek_timeout_id != -1:
GObject.source_remove(self._scale_reseek_timeout_id)
self._scale_reseek_timeout_id = -1
self._reseek()
widget.disconnect(self._scale_value_changed_id)
self._scale_value_changed_id = -1
self.button.set_sensitive(True)
if self._was_playing:
self.activity.player.play()
if self._scale_update_id == -1:
self._scale_update_id = GObject.timeout_add(
self.SCALE_UPDATE_INTERVAL, self.__update_scale_cb)
def __update_scale_cb(self):
success, self.p_position, self.p_duration = \
self.activity.player.query_position()
if success and self.p_position != Gst.CLOCK_TIME_NONE:
value = self.p_position * 100.0 / self.p_duration
self.adjustment.set_value(value)
# Update the current time
seconds = self.p_position * 10 ** -9
time = '%2d:%02d' % (int(seconds / 60), int(seconds % 60))
self.current_time_label.set_text(time)
return True
def __playlist_finished_cb(self, widget):
self.activity.player.stop()
self.set_button_play()
self.check_if_next_prev()
self.adjustment.set_value(0)
self.current_time_label.set_text('')
self.total_time_label.set_text('')