Progress Loader¶
Progressbar downloads files from the server.
Example¶
import os
from kivymd.app import MDApp
from kivy.lang import Builder
from kivy.factory import Factory
from kivymd.uix.progressloader import MDProgressLoader
from kivymd.theming import ThemeManager
from kivymd.toast import toast
Builder.load_string('''
<Root@BoxLayout>
orientation: 'vertical'
spacing: dp(5)
MDToolbar:
id: toolbar
title: 'MD Progress Loader'
left_action_items: [['menu', lambda x: None]]
elevation: 10
md_bg_color: app.theme_cls.primary_color
FloatLayout:
id: box
MDRoundFlatIconButton:
text: "Download file"
icon: "download"
pos_hint: {'center_x': .5, 'center_y': .6}
on_release: app.show_example_download_file()
''')
class Test(MDApp):
def build(self):
self.main_widget = Factory.Root()
return self.main_widget
def set_chevron_back_screen(self):
'''Sets the return chevron to the previous screen in ToolBar.'''
self.main_widget.ids.toolbar.right_action_items = []
def download_progress_hide(self, instance_progress, value):
'''Hides progress progress.'''
self.main_widget.ids.toolbar.right_action_items = [['download',
lambda x: self.download_progress_show(instance_progress)]]
def download_progress_show(self, instance_progress):
self.set_chevron_back_screen()
instance_progress.open()
instance_progress.animation_progress_from_fade()
def show_example_download_file(self):
link = 'https://www.python.org/ftp/python/3.5.1/python-3.5.1-embed-win32.zip'
progress = MDProgressLoader(
url_on_image=link,
path_to_file=os.path.join(self.directory, 'python-3.5.1.zip'),
download_complete=self.download_complete,
download_hide=self.download_progress_hide
)
progress.start(self.main_widget.ids.box)
def download_complete(self):
self.set_chevron_back_screen()
toast('Done')
Test().run()
API - kivymd.uix.progressloader
¶
-
class
kivymd.uix.progressloader.
MDProgressLoader
(**kwargs)¶ Bases:
kivymd.uix.card.MDCard
-
path_to_file
¶ The path to which the uploaded file will be saved.
-
url_on_image
¶ Link to uploaded file.
-
label_downloading_text
¶ Default text before downloading.
-
downloading_text
¶ Signature of the downloaded file.
-
download_complete
¶ Function, called after a successful file upload.
-
download_hide
¶ Function that is called when the download window is closed.
-
download_flag
¶ If True - the download process is in progress.
-
request
¶ UrlRequest object.
-
start
(self, root_instance)¶
-
open
(self)¶
-
draw_progress
(self, percent)¶ - Parameters
percent (int;) – loading percentage;
-
animation_progress_to_fade
(self, interval)¶
-
animation_progress_from_fade
(self)¶
-
retrieve_progress_load
(self, url, path)¶ - Parameters
url (str;) – link to content;
path (str;) – path to save content;
-
update_progress
(self, request, current_size, total_size)¶
-
on_success
(self, request, result)¶
-