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from kivy.app import App
from kivy.uix.button import Button
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
class DropFile(Button):
def __init__(self, **kwargs):
super(DropFile, self).__init__(**kwargs)
# get app instance to add function from widget
app = App.get_running_app()
# add function to the list
app.drops.append(self.on_drop_file)
def on_drop_file(self, widget, filename):
# a function catching a dropped file
# if it's dropped in the widget's area
if self.collide_point(*Window.mouse_pos):
# on_drop_file's filename is bytes (py3)
self.text = filename.decode('utf-8')
class DropApp(App):
def build(self):
# set an empty list that will be later populated
# with functions from widgets themselves
self.drops = []
# bind handling function to 'on_drop_file'
Window.bind(on_drop_file=self.handledrops)
box = BoxLayout()
dropleft = DropFile(text='left')
box.add_widget(dropleft)
dropright = DropFile(text='right')
box.add_widget(dropright)
return box
def handledrops(self, *args):
# this will execute each function from list with arguments from
# Window.on_drop_file
#
# make sure `Window.on_drop_file` works on your system first,
# otherwise the example won't work at all
for func in self.drops:
func(*args)
DropApp().run()
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