add hg and python

sys/lib/python/idlelib/CallTipWindow.py

@@ -0,0 +1,171 @@
+"""A CallTip window class for Tkinter/IDLE.
+
+After ToolTip.py, which uses ideas gleaned from PySol
+Used by the CallTips IDLE extension.
+
+"""
+from Tkinter import *
+
+HIDE_VIRTUAL_EVENT_NAME = "<<calltipwindow-hide>>"
+HIDE_SEQUENCES = ("<Key-Escape>", "<FocusOut>")
+CHECKHIDE_VIRTUAL_EVENT_NAME = "<<calltipwindow-checkhide>>"
+CHECKHIDE_SEQUENCES = ("<KeyRelease>", "<ButtonRelease>")
+CHECKHIDE_TIME = 100 # miliseconds
+
+MARK_RIGHT = "calltipwindowregion_right"
+
+class CallTip:
+
+    def __init__(self, widget):
+        self.widget = widget
+        self.tipwindow = self.label = None
+        self.parenline = self.parencol = None
+        self.lastline = None
+        self.hideid = self.checkhideid = None
+
+    def position_window(self):
+        """Check if needs to reposition the window, and if so - do it."""
+        curline = int(self.widget.index("insert").split('.')[0])
+        if curline == self.lastline:
+            return
+        self.lastline = curline
+        self.widget.see("insert")
+        if curline == self.parenline:
+            box = self.widget.bbox("%d.%d" % (self.parenline,
+                                              self.parencol))
+        else:
+            box = self.widget.bbox("%d.0" % curline)
+        if not box:
+            box = list(self.widget.bbox("insert"))
+            # align to left of window
+            box[0] = 0
+            box[2] = 0
+        x = box[0] + self.widget.winfo_rootx() + 2
+        y = box[1] + box[3] + self.widget.winfo_rooty()
+        self.tipwindow.wm_geometry("+%d+%d" % (x, y))
+
+    def showtip(self, text, parenleft, parenright):
+        """Show the calltip, bind events which will close it and reposition it.
+        """
+        # truncate overly long calltip
+        if len(text) >= 79:
+            textlines = text.splitlines()
+            for i, line in enumerate(textlines):
+                if len(line) > 79:
+                    textlines[i] = line[:75] + ' ...'
+            text = '\n'.join(textlines)
+        self.text = text
+        if self.tipwindow or not self.text:
+            return
+
+        self.widget.mark_set(MARK_RIGHT, parenright)
+        self.parenline, self.parencol = map(
+            int, self.widget.index(parenleft).split("."))
+
+        self.tipwindow = tw = Toplevel(self.widget)
+        self.position_window()
+        # remove border on calltip window
+        tw.wm_overrideredirect(1)
+        try:
+            # This command is only needed and available on Tk >= 8.4.0 for OSX
+            # Without it, call tips intrude on the typing process by grabbing
+            # the focus.
+            tw.tk.call("::tk::unsupported::MacWindowStyle", "style", tw._w,
+                       "help", "noActivates")
+        except TclError:
+            pass
+        self.label = Label(tw, text=self.text, justify=LEFT,
+                           background="#ffffe0", relief=SOLID, borderwidth=1,
+                           font = self.widget['font'])
+        self.label.pack()
+
+        self.checkhideid = self.widget.bind(CHECKHIDE_VIRTUAL_EVENT_NAME,
+                                            self.checkhide_event)
+        for seq in CHECKHIDE_SEQUENCES:
+            self.widget.event_add(CHECKHIDE_VIRTUAL_EVENT_NAME, seq)
+        self.widget.after(CHECKHIDE_TIME, self.checkhide_event)
+        self.hideid = self.widget.bind(HIDE_VIRTUAL_EVENT_NAME,
+                                       self.hide_event)
+        for seq in HIDE_SEQUENCES:
+            self.widget.event_add(HIDE_VIRTUAL_EVENT_NAME, seq)
+
+    def checkhide_event(self, event=None):
+        if not self.tipwindow:
+            # If the event was triggered by the same event that unbinded
+            # this function, the function will be called nevertheless,
+            # so do nothing in this case.
+            return
+        curline, curcol = map(int, self.widget.index("insert").split('.'))
+        if curline < self.parenline or \
+           (curline == self.parenline and curcol <= self.parencol) or \
+           self.widget.compare("insert", ">", MARK_RIGHT):
+            self.hidetip()
+        else:
+            self.position_window()
+            self.widget.after(CHECKHIDE_TIME, self.checkhide_event)
+
+    def hide_event(self, event):
+        if not self.tipwindow:
+            # See the explanation in checkhide_event.
+            return
+        self.hidetip()
+
+    def hidetip(self):
+        if not self.tipwindow:
+            return
+
+        for seq in CHECKHIDE_SEQUENCES:
+            self.widget.event_delete(CHECKHIDE_VIRTUAL_EVENT_NAME, seq)
+        self.widget.unbind(CHECKHIDE_VIRTUAL_EVENT_NAME, self.checkhideid)
+        self.checkhideid = None
+        for seq in HIDE_SEQUENCES:
+            self.widget.event_delete(HIDE_VIRTUAL_EVENT_NAME, seq)
+        self.widget.unbind(HIDE_VIRTUAL_EVENT_NAME, self.hideid)
+        self.hideid = None
+
+        self.label.destroy()
+        self.label = None
+        self.tipwindow.destroy()
+        self.tipwindow = None
+
+        self.widget.mark_unset(MARK_RIGHT)
+        self.parenline = self.parencol = self.lastline = None
+
+    def is_active(self):
+        return bool(self.tipwindow)
+
+
+
+###############################
+#
+# 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()
+
+    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()