Hi all,
moving from Canvas() to Text() I wanted to re-implement the same drag&drop
functionality I have.
I created a small test program show my problem(s).
I am creating two, Toplevel windows with MyText() inside.
The MyText extends the Text and adds a drag&drop.
For demonstration I've binded on the Control-Button-1 the starting of the drag
action
it creates a "floating" Label() with the selected text, which is placed at the
mouse position.
Now the problems:
1. The selection on the "drag" window keeps changing as I move the mouse.
The selection is changing as if there was a grab_set() even if the cursor is
on the second window.
2. If I drag the mouse on the second window, despite the Label is created() it
doesn't show it.
How can I correct those problems?
Many thanks in advance
Vasilis
import tkinter as tk
import tkinter.dnd as Dnd
class MyText(tk.Text):
def __init__(self, master, *kw, **kwargs):
super().__init__(master, *kw, **kwargs)
self.bind("<Control-Button-1>", self.button1)
self.dnd_text = None
# ----------------------------------------------------------------------
def button1(self, event):
Dnd.dnd_start(text1, event)
self.dnd_text = text1.get(tk.SEL_FIRST, tk.SEL_LAST)
# ----------------------------------------------------------------------
def dnd_accept(self, source, event):
return self
# ----------------------------------------------------------------------
def dnd_enter(self, source, event):
self.focus_set()
self.dnd_item = tk.Label(self, text=source.dnd_text,
border=2, relief=tk.RAISED)
self.dnd_motion(source, event)
# ----------------------------------------------------------------------
def dnd_leave(self, source, event):
self.dnd_item.place_forget()
self.dnd_item = None
# ----------------------------------------------------------------------
def dnd_motion(self, source, event):
self.dnd_item.place(x=event.x, y=event.y)
# ----------------------------------------------------------------------
def dnd_end(self, target, event):
if self.dnd_item:
self.dnd_item.place_forget()
self.dnd_item = None
self.dnd_text = None
# ----------------------------------------------------------------------
# Object has been dropped here
# ----------------------------------------------------------------------
def dnd_commit(self, source, event):
if self.dnd_item:
self.dnd_item.place_forget()
self.dnd_item = None
if source.dnd_text is None: return
self.insert(tk.CURRENT, source.dnd_text)
self.dnd_text = None
root=tk.Tk()
root.title("Top1")
text1 = MyText(root)
text1.pack(fill=tk.BOTH, expand=tk.YES)
for i in range(1000):
text1.insert(tk.END, "%d The quick brown fox jumps over the lazy dog's
tail\n"%(i))
top2 = tk.Toplevel(root)
top2.title("Top2")
text2 = MyText(top2)
text2.pack(fill=tk.BOTH, expand=tk.YES)
root.mainloop()
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