Initial revision

Lib/idlelib/CallTipWindow.py

@@ -0,0 +1,71 @@
+# A CallTip window class for Tkinter/IDLE.
+# After ToolTip.py, which uses ideas gleaned from PySol
+
+# Used by the CallTips IDLE extension.
+import os
+from Tkinter import *
+
+class CallTip:
+
+    def __init__(self, widget):
+        self.widget = widget
+        self.tipwindow = None
+        self.id = None
+        self.x = self.y = 0
+
+    def showtip(self, text):
+        self.text = text
+        if self.tipwindow or not self.text:
+            return
+        self.widget.see("insert")
+        x, y, cx, cy = self.widget.bbox("insert")
+        x = x + self.widget.winfo_rootx() + 2
+        y = y + cy + self.widget.winfo_rooty()
+        self.tipwindow = tw = Toplevel(self.widget)
+        tw.wm_overrideredirect(1)
+        tw.wm_geometry("+%d+%d" % (x, y))
+        label = Label(tw, text=self.text, justify=LEFT,
+                      background="#ffffe0", relief=SOLID, borderwidth=1,
+                      font = self.widget['font'])
+        label.pack()
+                      
+    def hidetip(self):
+        tw = self.tipwindow
+        self.tipwindow = None
+        if tw:
+            tw.destroy()
+
+
+###############################
+#
+# Test Code
+#
+class container: # Conceptually an editor_window
+    def __init__(self):
+        root = Tk()
+        text = self.text = Text(root)
+        text.pack(side=LEFT, fill=BOTH, expand=1)
+        text.insert("insert", "string.split")
+        root.update()
+        self.calltip = CallTip(text)
+
+        text.event_add("<<calltip-show>>", "(")
+        text.event_add("<<calltip-hide>>", ")")
+        text.bind("<<calltip-show>>", self.calltip_show)
+        text.bind("<<calltip-hide>>", self.calltip_hide)
+        
+        text.focus_set()
+        # root.mainloop() # not in idle
+
+    def calltip_show(self, event):
+        self.calltip.showtip("Hello world")
+
+    def calltip_hide(self, event):
+        self.calltip.hidetip()
+
+def main():
+    # Test code
+    c=container()
+
+if __name__=='__main__':
+    main()