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# Copyright 2019 The GNOME Music Developers
#
# GNOME Music 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.
#
# GNOME Music 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 GNOME Music; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# The GNOME Music authors hereby grant permission for non-GPL compatible
# GStreamer plugins to be used and distributed together with GStreamer
# and GNOME Music. This permission is above and beyond the permissions
# granted by the GPL license by which GNOME Music is covered. If you
# modify this code, you may extend this exception to your version of the
# code, but you are not obligated to do so. If you do not wish to do so,
# delete this exception statement from your version.
import math
from gettext import gettext as _
from gi.repository import Gdk, GLib, GObject, Gtk
from gnomemusic.widgets.headerbar import HeaderBar
from gnomemusic.widgets.albumcover import AlbumCover
from gnomemusic.widgets.albumwidget import AlbumWidget
@Gtk.Template(resource_path="/org/gnome/Music/ui/AlbumsView.ui")
class AlbumsView(Gtk.Stack):
"""Gridlike view of all albums
Album activation switches to AlbumWidget.
"""
__gtype_name__ = "AlbumsView"
icon_name = GObject.Property(
type=str, default="media-optical-cd-audio-symbolic",
flags=GObject.ParamFlags.READABLE)
search_mode_active = GObject.Property(type=bool, default=False)
selection_mode = GObject.Property(type=bool, default=False)
title = GObject.Property(
type=str, default=_("Albums"), flags=GObject.ParamFlags.READABLE)
_album_scrolled_window = Gtk.Template.Child()
_scrolled_window = Gtk.Template.Child()
_flowbox = Gtk.Template.Child()
_flowbox_long_press = Gtk.Template.Child()
def __init__(self, application):
"""Initialize AlbumsView
:param application: The Application object
"""
super().__init__(transition_type=Gtk.StackTransitionType.CROSSFADE)
self.props.name = "albums"
self._application = application
self._window = application.props.window
self._headerbar = self._window._headerbar
self._adjustment_timeout_id = 0
self._viewport = self._scrolled_window.get_child()
self._widget_counter = 1
self._ctrl_hold = False
model = self._application.props.coremodel.props.albums_sort
self._flowbox.bind_model(model, self._create_widget)
self._flowbox.set_hadjustment(self._scrolled_window.get_hadjustment())
self._flowbox.set_vadjustment(self._scrolled_window.get_vadjustment())
self._flowbox.connect("child-activated", self._on_child_activated)
self.bind_property(
"selection-mode", self._window, "selection-mode",
GObject.BindingFlags.DEFAULT)
self._window.connect(
"notify::selection-mode", self._on_selection_mode_changed)
self._album_widget = AlbumWidget(self._application)
self._album_widget.bind_property(
"selection-mode", self, "selection-mode",
GObject.BindingFlags.BIDIRECTIONAL)
self._album_scrolled_window.add(self._album_widget)
self.connect(
"notify::search-mode-active", self._on_search_mode_changed)
self._scrolled_window.props.vadjustment.connect(
"value-changed", self._on_vadjustment_changed)
self._scrolled_window.props.vadjustment.connect(
"changed", self._on_vadjustment_changed)
def _on_vadjustment_changed(self, adjustment):
if self._adjustment_timeout_id != 0:
GLib.source_remove(self._adjustment_timeout_id)
self._adjustment_timeout_id = 0
self._adjustment_timeout_id = GLib.timeout_add(
200, self._retrieve_covers, adjustment.props.value,
priority=GLib.PRIORITY_DEFAULT - 10)
def _retrieve_covers(self, old_adjustment):
adjustment = self._scrolled_window.props.vadjustment.props.value
if old_adjustment != adjustment:
return GLib.SOURCE_CONTINUE
first_cover = self._flowbox.get_child_at_index(0)
if first_cover is None:
return GLib.SOURCE_REMOVE
cover_size, _ = first_cover.get_allocated_size()
if cover_size.width == 0 or cover_size.height == 0:
return GLib.SOURCE_REMOVE
viewport_size, _ = self._viewport.get_allocated_size()
h_space = self._flowbox.get_column_spacing()
v_space = self._flowbox.get_row_spacing()
nr_cols = (
(viewport_size.width + h_space) // (cover_size.width + h_space))
top_left_cover = self._flowbox.get_child_at_index(
nr_cols * (adjustment // (cover_size.height + v_space)))
covers_col = math.ceil(viewport_size.width / cover_size.width)
covers_row = math.ceil(viewport_size.height / cover_size.height)
children = self._flowbox.get_children()
retrieve_list = []
for i, albumcover in enumerate(children):
if top_left_cover == albumcover:
retrieve_covers = covers_row * covers_col
retrieve_list = children[i:i + retrieve_covers]
break
for albumcover in retrieve_list:
albumcover.retrieve()
self._adjustment_timeout_id = 0
return GLib.SOURCE_REMOVE
def _on_selection_mode_changed(self, widget, data=None):
selection_mode = self._window.props.selection_mode
if (selection_mode == self.props.selection_mode
or self.get_parent().get_visible_child() != self):
return
self.props.selection_mode = selection_mode
if not self.props.selection_mode:
self.deselect_all()
self._flowbox.props.selection_mode = Gtk.SelectionMode.NONE
def _on_search_mode_changed(self, klass, param):
if (not self.props.search_mode_active
and self._headerbar.props.stack.props.visible_child == self
and self.get_visible_child() == self._album_widget):
self._set_album_headerbar(self._album_widget.props.corealbum)
def _create_widget(self, corealbum):
album_widget = AlbumCover(corealbum)
self.bind_property(
"selection-mode", album_widget, "selection-mode",
GObject.BindingFlags.SYNC_CREATE
| GObject.BindingFlags.BIDIRECTIONAL)
# NOTE: Adding SYNC_CREATE here will trigger all the nested
# models to be created. This will slow down initial start,
# but will improve initial 'select all' speed.
album_widget.bind_property(
"selected", corealbum, "selected",
GObject.BindingFlags.BIDIRECTIONAL)
GLib.timeout_add(
self._widget_counter * 250, album_widget.retrieve,
priority=GLib.PRIORITY_LOW)
self._widget_counter = self._widget_counter + 1
return album_widget
def _back_button_clicked(self, widget, data=None):
self._headerbar.state = HeaderBar.State.MAIN
self.props.visible_child = self._scrolled_window
def _on_child_activated(self, widget, child, user_data=None):
corealbum = child.props.corealbum
if self.props.selection_mode:
return
# Update and display the album widget if not in selection mode
self._album_widget.props.corealbum = corealbum
self._set_album_headerbar(corealbum)
self.set_visible_child(self._album_scrolled_window)
def _set_album_headerbar(self, corealbum):
self._headerbar.props.state = HeaderBar.State.CHILD
self._headerbar.props.title = corealbum.props.title
self._headerbar.props.subtitle = corealbum.props.artist
@Gtk.Template.Callback()
def _on_flowbox_press_begin(self, gesture, sequence):
event = gesture.get_last_event(sequence)
ok, state = event.get_state()
if ((ok is True
and state == Gdk.ModifierType.CONTROL_MASK)
or self.props.selection_mode is True):
self._flowbox.props.selection_mode = Gtk.SelectionMode.MULTIPLE
if state == Gdk.ModifierType.CONTROL_MASK:
self._ctrl_hold = True
@Gtk.Template.Callback()
def _on_flowbox_press_cancel(self, gesture, sequence):
self._flowbox.props.selection_mode = Gtk.SelectionMode.NONE
@Gtk.Template.Callback()
def _on_selected_children_changed(self, flowbox):
if self._flowbox.props.selection_mode == Gtk.SelectionMode.NONE:
return
if self.props.selection_mode is False:
self.props.selection_mode = True
rubberband_selection = len(self._flowbox.get_selected_children()) > 1
with self._application.props.coreselection.freeze_notify():
if (rubberband_selection
and not self._ctrl_hold):
self.deselect_all()
for child in self._flowbox.get_selected_children():
if (self._ctrl_hold is True
or not rubberband_selection):
child.props.selected = not child.props.selected
else:
child.props.selected = True
self._ctrl_hold = False
self._flowbox.props.selection_mode = Gtk.SelectionMode.NONE
def _toggle_all_selection(self, selected):
"""Selects or deselects all items.
"""
with self._application.props.coreselection.freeze_notify():
if self.get_visible_child() == self._album_widget:
if selected is True:
self._album_widget.select_all()
else:
self._album_widget.deselect_all()
else:
for child in self._flowbox.get_children():
child.props.selected = selected
def select_all(self):
self._toggle_all_selection(True)
def deselect_all(self):
self._toggle_all_selection(False)
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