StreamController/GtkHelper/DynamicFlowBox.py at main · abcbcafe/StreamController · GitHub

History

161 lines (125 loc) · 5.17 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

"""

Author: Core447

Year: 2023

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 3 of the License, or

any later version.

This programm comes with ABSOLUTELY NO WARRANTY!

You should have received a copy of the GNU General Public License

along with this program. If not, see <https://www.gnu.org/licenses/>.

"""

# Import gtk modules

import gi

gi.require_version("Gtk", "4.0")

gi.require_version("Adw", "1")

from gi.repository import Gtk, GLib

# Import python modules

from loguru import logger as log

import threading

from functools import cmp_to_key

class DynamicFlowBox(Gtk.Box):

def __init__(self, *args, **kwargs):

super().__init__(*args, **kwargs)

self.set_orientation(Gtk.Orientation.VERTICAL)

self.start_index = 0

self.N_ITEMS_PER_PAGE = 50

self.all_items: list = []

self.filtered_items: list = []

self.sorted_items: list = []

self.factory:callable = None

self.filter:callable = None

self.sort:callable = None

self.build()

def build(self):

self.scrolled_window = Gtk.ScrolledWindow(hexpand=True, vexpand=True, margin_bottom=10)

self.append(self.scrolled_window)

self.scrolled_box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)

self.scrolled_window.set_child(self.scrolled_box)

self.flow_box = Gtk.FlowBox(orientation=Gtk.Orientation.HORIZONTAL)

self.scrolled_box.append(self.flow_box)

# Fix stretching of flow_box children

self.scrolled_box.append(Gtk.Box(vexpand=True))

self.nav_box = Gtk.Box(orientation=Gtk.Orientation.HORIZONTAL)

self.append(self.nav_box)

self.prev_button = Gtk.Button(label="Go Back", sensitive=False)

self.prev_button.connect("clicked", self.on_prev)

self.nav_box.append(self.prev_button)

self.nav_box.append(Gtk.Box(hexpand=True))

self.next_button = Gtk.Button(label="Go Next")

self.next_button.connect("clicked", self.on_next)

self.nav_box.append(self.next_button)

def load_items(self):

start = self.start_index

end = self.start_index + self.N_ITEMS_PER_PAGE

self.load_list(self.get_list_to_load()[start:end])

def get_list_to_load(self) -> list:

if self.filter is not None:

return self.filtered_items

if self.sort is not None:

return self.sorted_items

return self.all_items

def add_item(self, item, invalidate_filter: bool = False):

self.all_items.append(item)

if invalidate_filter:

self.invalidate_filter()

def load_list(self, items):

# self.remove_all()

while self.flow_box.get_first_child() is not None:

child = self.flow_box.get_first_child()

if hasattr(child, "disconnect_signals"):

child.disconnect_signals()

self.flow_box.remove(child)

for item in items:

widget = self.get_item_widget(item)

if widget is None:

continue

self.flow_box.append(widget)

def get_item_widget(self, item) -> Gtk.Widget:

if callable(self.factory):

return self.factory(item)

def set_factory(self, factory: callable):

if not callable(factory):

log.warning("Chosen factory is not callable")

return

self.factory = factory

def on_next(self, button):

self.start_index += self.N_ITEMS_PER_PAGE

self.start_index = min(self.start_index, len(self.all_items) - self.N_ITEMS_PER_PAGE)

self.load_items()

# Set sensitivity

self.prev_button.set_sensitive(self.start_index > 0)

self.next_button.set_sensitive(self.start_index + self.N_ITEMS_PER_PAGE < len(self.get_list_to_load()))

def on_prev(self, button):

self.start_index -= self.N_ITEMS_PER_PAGE

self.start_index = max(0, self.start_index)

self.load_items()

# Set sensitivity

self.prev_button.set_sensitive(self.start_index > 0)

self.next_button.set_sensitive(self.start_index + self.N_ITEMS_PER_PAGE < len(self.get_list_to_load()))

def invalidate_filter(self):

self.filtered_items = []

for item in self.all_items:

if not callable(self.filter):

pass

elif not self.filter(item):

continue

self.filtered_items.append(item)

self.load_items()

def invalidate_sort(self):

if not callable(self.sort):

self.sorted_items = self.filtered_items

self.sorted_items = sorted(self.filtered_items, key=cmp_to_key(self.sort))

self.load_items()

def set_filter_func(self, filter: callable) -> None:

if not callable(filter):

log.warning("Chosen filter is not callable")

return

self.filter = filter

self.invalidate_filter()

def set_sort_func(self, sort: callable) -> None:

if not callable(sort):

log.warning("Chosen sort function is not callable")

return

self.sort = sort

self.invalidate_sort()

StreamController/GtkHelper/DynamicFlowBox.py at main · abcbcafe/StreamController · GitHub

Expand file tree

Breadcrumbs

DynamicFlowBox.py

Latest commit

History

Breadcrumbs

DynamicFlowBox.py

File metadata and controls