From b96f8ff999f0fc9194d5cd7e78b010e30d722652 Mon Sep 17 00:00:00 2001
From: Blake Harnden <32446120+bharnden@users.noreply.github.com>
Date: Tue, 12 Nov 2019 13:01:58 -0800
Subject: [PATCH] updated standard tooltip to use delays and have the same
 style of the canvas tooltip

---
 coretk/coretk/toolbar.py | 14 +++++++-------
 coretk/coretk/tooltip.py | 34 +++++++++++++++++++++++++++-------
 2 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/coretk/coretk/toolbar.py b/coretk/coretk/toolbar.py
index 5b2c83bd..752b1000 100644
--- a/coretk/coretk/toolbar.py
+++ b/coretk/coretk/toolbar.py
@@ -5,7 +5,7 @@ from functools import partial
 from coretk.dialogs.customnodes import CustomNodesDialog
 from coretk.graph import GraphMode
 from coretk.images import ImageEnum, Images
-from coretk.tooltip import CreateToolTip
+from coretk.tooltip import Tooltip
 
 
 class Toolbar(tk.Frame):
@@ -188,7 +188,7 @@ class Toolbar(tk.Frame):
         button = tk.Button(frame, width=self.width, height=self.height, image=image)
         button.bind("<ButtonRelease-1>", lambda e: func())
         button.grid(pady=1)
-        CreateToolTip(button, tooltip)
+        Tooltip(button, tooltip)
 
     def create_radio_button(self, frame, image, func, variable, value, tooltip_msg):
         button = tk.Radiobutton(
@@ -202,14 +202,14 @@ class Toolbar(tk.Frame):
             command=func,
         )
         button.grid()
-        CreateToolTip(button, tooltip_msg)
+        Tooltip(button, tooltip_msg)
 
     def create_regular_button(self, frame, image, func, tooltip):
         button = tk.Button(
             frame, width=self.width, height=self.height, image=image, command=func
         )
         button.grid()
-        CreateToolTip(button, tooltip)
+        Tooltip(button, tooltip)
 
     def click_selection_tool(self):
         logging.debug("clicked selection tool")
@@ -274,7 +274,7 @@ class Toolbar(tk.Frame):
         )
         self.node_button.bind("<ButtonRelease-1>", lambda e: self.draw_node_picker())
         self.node_button.grid()
-        CreateToolTip(self.node_button, "Network-layer virtual nodes")
+        Tooltip(self.node_button, "Network-layer virtual nodes")
 
     def draw_network_picker(self):
         """
@@ -323,7 +323,7 @@ class Toolbar(tk.Frame):
             "<ButtonRelease-1>", lambda e: self.draw_network_picker()
         )
         self.network_button.grid()
-        CreateToolTip(self.network_button, "link-layer nodes")
+        Tooltip(self.network_button, "link-layer nodes")
 
     def draw_annotation_picker(self):
         """
@@ -369,7 +369,7 @@ class Toolbar(tk.Frame):
             "<ButtonRelease-1>", lambda e: self.draw_annotation_picker()
         )
         self.annotation_button.grid()
-        CreateToolTip(self.annotation_button, "background annotation tools")
+        Tooltip(self.annotation_button, "background annotation tools")
 
     def create_observe_button(self):
         menu_button = tk.Menubutton(
diff --git a/coretk/coretk/tooltip.py b/coretk/coretk/tooltip.py
index 6fbbc3c9..1877fd24 100644
--- a/coretk/coretk/tooltip.py
+++ b/coretk/coretk/tooltip.py
@@ -1,7 +1,8 @@
 import tkinter as tk
+from tkinter import ttk
 
 
-class CreateToolTip(object):
+class Tooltip(object):
     """
     Create tool tip for a given widget
     """
@@ -9,10 +10,29 @@ class CreateToolTip(object):
     def __init__(self, widget, text="widget info"):
         self.widget = widget
         self.text = text
-        self.widget.bind("<Enter>", self.enter)
-        self.widget.bind("<Leave>", self.close)
+        self.widget.bind("<Enter>", self.on_enter)
+        self.widget.bind("<Leave>", self.on_leave)
+        self.waittime = 400
+        self.id = None
         self.tw = None
 
+    def on_enter(self, event=None):
+        self.schedule()
+
+    def on_leave(self, event=None):
+        self.unschedule()
+        self.close(event)
+
+    def schedule(self):
+        self.unschedule()
+        self.id = self.widget.after(self.waittime, self.enter)
+
+    def unschedule(self):
+        id_ = self.id
+        self.id = None
+        if id_:
+            self.widget.after_cancel(id_)
+
     def enter(self, event=None):
         x, y, cx, cy = self.widget.bbox("insert")
         x += self.widget.winfo_rootx()
@@ -21,13 +41,13 @@ class CreateToolTip(object):
         self.tw = tk.Toplevel(self.widget)
         self.tw.wm_overrideredirect(True)
         self.tw.wm_geometry("+%d+%d" % (x, y))
-        label = tk.Label(
+        label = ttk.Label(
             self.tw,
             text=self.text,
             justify=tk.LEFT,
-            background="#ffffe6",
-            relief="solid",
-            borderwidth=1,
+            background="#FFFFEA",
+            relief=tk.SOLID,
+            borderwidth=0,
         )
         label.grid(padx=1)