# -*- coding: utf-8 -*-
import os
import platform
from tkinterdnd2 import *
try:
from Tkinter import *
from ScrolledText import ScrolledText
except ImportError:
from tkinter import *
from tkinter.scrolledtext import ScrolledText
root = TkinterDnD.Tk()
root.withdraw()
root.title('TkinterDnD demo')
root.grid_rowconfigure(1, weight=1, minsize=250)
root.grid_columnconfigure(0, weight=1, minsize=300)
root.grid_columnconfigure(1, weight=1, minsize=300)
def print_event_info(event):
print('\nAction:', event.action)
print('Supported actions:', event.actions)
print('Mouse button:', event.button)
print('Type codes:', event.codes)
print('Current type code:', event.code)
print('Common source types:', event.commonsourcetypes)
print('Common target types:', event.commontargettypes)
print('Data:', event.data)
print('Event name:', event.name)
print('Supported types:', event.types)
print('Modifier keys:', event.modifiers)
print('Supported source types:', event.supportedsourcetypes)
print('Operation type:', event.type)
print('Source types:', event.sourcetypes)
print('Supported target types:', event.supportedtargettypes)
print('Widget:', event.widget, '(type: %s)' % type(event.widget))
print('X:', event.x_root)
print('Y:', event.y_root, '\n')
Label(root, text='Drag and drop files here:').grid(
row=0, column=0, padx=10, pady=5)
Label(root, text='Drag and drop text here:').grid(
row=0, column=1, padx=10, pady=5)
buttonbox = Frame(root)
buttonbox.grid(row=2, column=0, columnspan=2, pady=5)
Button(buttonbox, text='Quit', command=root.quit).pack(
side=LEFT, padx=5)
##############################################################################
###### Basic demo window: a Listbox to drag & drop files ##
###### and a Text widget to drag & drop text ##
##############################################################################
listbox = Listbox(root, name='dnd_demo_listbox',
selectmode='extended', width=1, height=1)
listbox.grid(row=1, column=0, padx=5, pady=5, sticky='news')
text = Text(root, name='dnd_demo_text', wrap='word', undo=True, width=1, height=1)
text.grid(row=1, column=1, pady=5, sticky='news')
listbox.insert(END, os.path.abspath(__file__))
info = 'TkinterDnD demo\nDetected versions:\n'
info += ' Python: %s\n' % platform.python_version()
info += ' Tk : %f\n' % TkVersion
info += ' Tkdnd : %s\n' % TkinterDnD.TkdndVersion
info += 'Use mouse button 3 to drag hightlighted text from the text box.\n'
text.insert(END, info)
# Drop callbacks can be shared between the Listbox and Text;
# according to the man page these callbacks must return an action type,
# however they also seem to work without
def drop_enter(event):
event.widget.focus_force()
print('Entering widget: %s' % event.widget)
#print_event_info(event)
return event.action
def drop_position(event):
print('Position: x %d, y %d' %(event.x_root, event.y_root))
#print_event_info(event)
return event.action
def drop_leave(event):
print('Leaving %s' % event.widget)
#print_event_info(event)
return event.action
def drop(event):
if event.data:
print('Dropped data:\n', event.data)
#print_event_info(event)
if event.widget == listbox:
# event.data is a list of filenames as one string;
# if one of these filenames contains whitespace characters
# it is rather difficult to reliably tell where one filename
# ends and the next begins; the best bet appears to be
# to count on tkdnd's and tkinter's internal magic to handle
# such cases correctly; the following seems to work well
# at least with Windows and Gtk/X11
files = listbox.tk.splitlist(event.data)
for f in files:
if os.path.exists(f):
print('Dropped file: "%s"' % f)
listbox.insert('end', f)
else:
print('Not dropping file "%s": file does not exist.' % f)
elif event.widget == text:
# calculate the mouse pointer's text index
bd = text['bd'] + text['highlightthickness']
x = event.x_root - text.winfo_rootx() - bd
y = event.y_root - text.winfo_rooty() - bd
index = text.index('@%d,%d' % (x,y))
text.insert(index, event.data)
else:
print('Error: reported event.widget not known')
return event.action
# now make the Listbox and Text drop targets
listbox.drop_target_register(DND_FILES, DND_TEXT)
text.drop_target_register(DND_TEXT)
for widget in (listbox, text):
widget.dnd_bind('<<DropEnter>>', drop_enter)
widget.dnd_bind('<<DropPosition>>', drop_position)
widget.dnd_bind('<<DropLeave>>', drop_leave)
widget.dnd_bind('<<Drop>>', drop)
#widget.dnd_bind('<<Drop:DND_Files>>', drop)
#widget.dnd_bind('<<Drop:DND_Text>>', drop)
# define drag callbacks
def drag_init_listbox(event):
print_event_info(event)
# use a tuple as file list, this should hopefully be handled gracefully
# by tkdnd and the drop targets like file managers or text editors
data = ()
if listbox.curselection():
data = tuple([listbox.get(i) for i in listbox.curselection()])
print('Dragging :', data)
# tuples can also be used to specify possible alternatives for
# action type and DnD type:
return ((ASK, COPY), (DND_FILES, DND_TEXT), data)
def drag_init_text(event):
print_event_info(event)
# use a string if there is only a single text string to be dragged
data = ''
sel = text.tag_nextrange(SEL, '1.0')
if sel:
data = text.get(*sel)
print('Dragging :\n', data)
# if there is only one possible alternative for action and DnD type
# we can also use strings here
return (COPY, DND_TEXT, data)
def drag_end(event):
#print_event_info(event)
# this callback is not really necessary if it doesn't do anything useful
print('Drag ended for widget:', event.widget)
# finally make the widgets a drag source
listbox.drag_source_register(1, DND_TEXT, DND_FILES)
text.drag_source_register(3, DND_TEXT)
listbox.dnd_bind('<<DragInitCmd>>', drag_init_listbox)
listbox.dnd_bind('<<DragEndCmd>>', drag_end)
text.dnd_bind('<<DragInitCmd>>', drag_init_text)
# skip the useless drag_end() binding for the text widget
root.update_idletasks()
root.deiconify()
root.mainloop()
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