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| import tkinter.ttk as ttk
import tkinter as tk
class DnDHandler():
def __init__(self, draggable):
self.draggable = draggable
self.source = draggable.source
self.target = None
root = self.source._root()
root.bind('<Motion>', self.on_motion)
root.bind('<ButtonRelease-1>', self.on_button_release)
def on_motion(self, event):
draggable = self.draggable
if draggable.withdrawn:
self.draggable.show()
self.source.dnd_enter()
x, y = event.x_root, event.y_root
source = self.source
target = source.winfo_containing(x, y)
new_target = None
while target is not None:
if dnd_accept := getattr(target, 'dnd_accept', None):
new_target = dnd_accept(source, event)
if new_target is not None:
break
target = target.master
old_target = self.target
if old_target is not new_target:
if old_target is not None:
self.target = None
old_target.dnd_leave()
if new_target is not None:
self.target = new_target
new_target.dnd_enter()
def on_button_release(self, event):
target = self.target
source = self.source
root = source._root()
root.unbind('<Motion>', )
root.unbind('<ButtonRelease-1>', )
commit = target is not None and target != source
if commit:
target.dnd_commit(source)
self.draggable.destroy(commit)
source.dnd_end()
class Draggable(tk.Variable):
withdrawn = True
commit = False
def __init__(self, source):
super().__init__()
self.source = source
self.save_cursor = source['cursor'] or ""
self.dnd_handler = DnDHandler(self)
source.wait_variable(self)
def show(self):
source = self.source
self.saved_cursor = source['cursor'] or ""
source['cursor'] = 'hand2'
self.withdrawn = False
def destroy(self, commit=False):
if not self.withdrawn:
self.source['cursor'] = self.saved_cursor
self.set('done')
self.commit = commit
class DnD_able:
def dnd_accept(self, source, event):
'''returns self if it accepts to be a drop target or None'''
return None
def dnd_commit(self, source):
return self
def dnd_enter(self):
pass
def dnd_leave(self):
pass
def dnd_end(self):
pass
class TreeviewBorder(ttk.Treeview):
def __init__(self, master=None, **kw):
frame = self._frame = tk.Frame(master, bd=2)
self.saved_bg = frame.cget('bg')
super().__init__(frame, **kw)
def grid(self, **kw):
self._frame.grid(**kw)
super().pack()
def grid_forget(self):
self._frame.grid_forget()
super().pack_forget()
def toggle_highlight(self, highlight):
if highlight:
self._frame.configure(bg='blue')
else:
self._frame.configure(bg=self.saved_bg)
class Treeview(TreeviewBorder, DnD_able):
def __init__(self, master=None, **kwargs):
super().__init__(master, **kwargs)
self.selected = []
self.bind('<<TreeviewSelect>>', self.on_selection_change)
def on_selection_change(self, event):
self.selected = self.selection()
if self.selected:
w = Draggable(self)
if w.commit:
self.delete(*self.selected)
self.selected = []
def dnd_accept(self, source, event):
return self if isinstance(source, type(self)) else None
def dnd_commit(self, source):
for item in source.selected:
data = source.item(item)
row = { k: v for k, v in data.items() if k in ('text values') }
self.insert('', 'end', **row)
dnd_enter = lambda self: super().toggle_highlight(True)
dnd_end = dnd_leave = lambda self: super().toggle_highlight(False)
if __name__ == '__main__':
from collections import namedtuple
fruit = namedtuple('Fruit', 'name, cost, range')
fruits = [
fruit('Pommes', 2.24, 1),
fruit('Poires', 3.31, 2),
fruit('Bananes', 1.69, 3),
fruit('Prunes', 3.78, 4),
fruit('Oranges', 2.05, 5),
fruit('Pêches', 3.69, 6),
fruit('Abricots', 4.20, 7),
fruit('Kiwis', 3.53, 8),
]
root = tk.Tk()
#Créer un tableau
columns=("Fruit","Prix","Numéro")
widths = 130, 100, 100
trees = []
for i in range(2):
tv = Treeview(root, height=10, show="headings", columns=columns,
name=f'tv_{i}')
for label in columns:
tv.heading(label,text=label)
for label, width in zip(columns, widths):
tv.column(label, width=width, anchor='center')
trees.append(tv)
tv.grid(row=0, column=i)
# Insérer des données de fonction avec couleur alternée par ligne
tv = trees[0]
for i, fruit in enumerate(fruits):
tv.insert('', i,text=fruit.name,values=fruit)
root.mainloop() |
