Adding MultiListBox with resizable columns

Scott Thomson · Scott Thomson · commit 797b5662afc7 · 2016-10-26T14:55:13.000+01:00
diff --git a/TK Widgets/table.py b/TK Widgets/table.py
@@ -0,0 +1,124 @@
+#Modified by Scott Thomson to make table column width resizable.
+
+from tkinter import *
+#import tkSimpleDialog
+
+
+class MultiListbox(Frame):
+    def __init__(self, master, lists):
+        Frame.__init__(self, master)
+        self.master = master
+        self.titles = lists
+        self.lists = []
+        self.tablePane = PanedWindow(self,orient=HORIZONTAL)
+        self.tablePane.pack(side=LEFT,fill=BOTH,expand=1)
+        for l,w in lists:
+
+            frame = Frame(self.tablePane)
+            frame.pack(side=LEFT, expand=YES, fill=BOTH)
+            Label(frame, text=l, borderwidth=1, relief=RAISED).pack(fill=X)
+            lb = Listbox(frame, width=w, borderwidth=0, selectborderwidth=0,
+                 relief=FLAT, exportselection=FALSE)
+            lb.pack(expand=YES, fill=BOTH)
+            self.lists.append(lb)
+            lb.bind('<B1-Motion>', lambda e, s=self: s._select(e.y))
+            lb.bind('<Button-1>', lambda e, s=self: s._select(e.y))
+            lb.bind('<Leave>', lambda e: 'break')
+            lb.bind('<B2-Motion>', lambda e, s=self: s._b2motion(e.x, e.y))
+            lb.bind('<Button-2>', lambda e, s=self: s._button2(e.x, e.y))
+            # Scrolling whilst hovering over a list only scrolls one column
+            # this attempt at a fix doesn't work.
+            lb.bind('<MouseWheel>', self._mousewheel)
+            self.tablePane.add(frame)
+        frame = Frame(self)
+        Label(frame, borderwidth=1, relief=RAISED).pack(fill=X)
+        sb = Scrollbar(frame, orient=VERTICAL, command=self._scroll)
+        sb.pack(expand=YES, fill=Y)
+        #self.tablePane.add(frame,cursor=None,sashcursor=None)
+        frame.pack(side=RIGHT,expand=1,fill=Y,anchor=W)
+        self.lists[0]['yscrollcommand']=sb.set
+
+    def _mousewheel(self,event):
+        #print(vars(event))
+        scroll_by = int(-1*(event.delta/120))
+        #print(scroll_by)
+        for l in self.lists:
+            #l.yview('scroll',scroll_by, 'units')
+            l.yview_scroll(scroll_by, "units")
+
+    def _select(self, y):
+        row = self.lists[0].nearest(y)
+        self.selection_clear(0, END)
+        self.selection_set(row)
+        return 'break'    
+
+    def _button2(self, x, y):
+        for l in self.lists: l.scan_mark(x, y)
+        return 'break'
+
+    def _b2motion(self, x, y):
+        for l in self.lists: l.scan_dragto(x, y)
+        return 'break'
+
+    def _scroll(self, *args):
+        #print(args)
+        for l in self.lists:
+            #apply(l.yview, args)
+            l.yview(*args)
+
+    def curselection(self):
+        return self.lists[0].curselection()
+
+    def delete(self, first, last=None):
+        for l in self.lists:
+            l.delete(first, last)
+
+    def get(self, first, last=None):
+        result = []
+        for l in self.lists:
+            result.append(l.get(first,last))
+        if last:
+            #return apply(map, [None] + result)
+            return map([None] + result)
+        return result
+        
+    def index(self, index):
+        self.lists[0].index(index)
+
+    def insert(self, index, *elements):
+        for e in elements:
+            i = 0
+            for l in self.lists:
+                l.insert(index, e[i])
+                i = i + 1
+
+    def size(self):
+        return self.lists[0].size()
+
+    def see(self, index):
+        for l in self.lists:
+            l.see(index)
+
+    def selection_anchor(self, index):
+        for l in self.lists:
+            l.selection_anchor(index)
+
+    def selection_clear(self, first, last=None):
+        for l in self.lists:
+            l.selection_clear(first, last)
+
+    def selection_includes(self, index):
+        return self.lists[0].selection_includes(index)
+
+    def selection_set(self, first, last=None):
+        for l in self.lists:
+            l.selection_set(first, last)
+
+if __name__ == '__main__':
+    tk = Tk()
+    Label(tk, text='MultiListbox').pack()
+    mlb = MultiListbox(tk, (('Field Name', 40),('Type', 40), ('Data', 20)))
+    for i in range(50):
+        mlb.insert(END, ('Field %d' % i,'Binary%d' % i, 'Data%d' % i))
+    mlb.pack(expand=YES,fill=BOTH)
+    tk.mainloop()
