From Vasilis.Vlachoudis at cern.ch  Thu May  9 03:58:42 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Thu, 9 May 2019 07:58:42 +0000
Subject: [Tkinter-discuss] Button event calls Leave/Enter
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>

Hi all,

I've just realized that the mouse click <Button-1> event generates as well
a <Leave> followed by <Enter> event before.
With the program below, if one clicks in the frame
you get the messages printed
Leave event
Enter event
Button1 pressed
Which I don't understand the reasoning behind. However it generates
a problem to my application since I have some actions that are binded with
the Leave event and when the button1 handler is called the program
has already altered some structures.
Is there a way forbit the calls to Leave/Enter before the Button1?

Many thanks in advance
Vasilis

import tkinter as tk
def enter(event): print("Enter event")
def leave(event): print("Leave event")
def button1(event): print("Button1 pressed")

root = tk.Tk()
frame = tk.Frame(root, bg="Yellow",
takefocus=False,
width=600, height=400)
frame.pack(fill=tk.BOTH, expand=tk.YES)
frame.bind("<Enter>", enter)
frame.bind("<Leave>", leave)
frame.bind("<Button-1>", button1)
root.mainloop()

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From klappnase at web.de  Fri May 10 18:57:14 2019
From: klappnase at web.de (Michael Lange)
Date: Sat, 11 May 2019 00:57:14 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
Message-ID: <20190511005714.0b11d128aa2ed21dd0f02591@web.de>

Hi,

On Thu, 9 May 2019 07:58:42 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all,
>
> I've just realized that the mouse click <Button-1> event generates as
> well a <Leave> followed by <Enter> event before.

what system are you using and which version of Tcl/Tk?
I cannot reproduce that behavior here (Debian, Tk 8.6.6).

Regards

Michael

> With the program below, if one clicks in the frame
> you get the messages printed
> Leave event
> Enter event
> Button1 pressed
> Which I don't understand the reasoning behind. However it generates
> a problem to my application since I have some actions that are binded
> with the Leave event and when the button1 handler is called the program
> has already altered some structures.
> Is there a way forbit the calls to Leave/Enter before the Button1?
>
> Many thanks in advance
> Vasilis
>
> import tkinter as tk
> def enter(event): print("Enter event")
> def leave(event): print("Leave event")
> def button1(event): print("Button1 pressed")
>
> root = tk.Tk()
> frame = tk.Frame(root, bg="Yellow",
> takefocus=False,
> width=600, height=400)
> frame.pack(fill=tk.BOTH, expand=tk.YES)
> frame.bind("<Enter>", enter)
> frame.bind("<Leave>", leave)
> frame.bind("<Button-1>", button1)
> root.mainloop()
>



.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Virtue is a relative term.
		-- Spock, "Friday's Child", stardate 3499.1

From Vasilis.Vlachoudis at cern.ch  Sun May 12 13:49:44 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Sun, 12 May 2019 17:49:44 +0000
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>,
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>

Hi Michael,

I am using Ubuntu 19.04
with python 3.7 and tk 8.6.9+1

Vasilis Vlachoudis
Dep EN, CERN
CH-1211 GENEVA 23
SWITZERLAND

Phone:  +41-22 767 9851
GSM:    +41-75 411 4378


________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Saturday, May 11, 2019 00:57
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter

Hi,

On Thu, 9 May 2019 07:58:42 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all,
>
> I've just realized that the mouse click <Button-1> event generates as
> well a <Leave> followed by <Enter> event before.

what system are you using and which version of Tcl/Tk?
I cannot reproduce that behavior here (Debian, Tk 8.6.6).

Regards

Michael

> With the program below, if one clicks in the frame
> you get the messages printed
> Leave event
> Enter event
> Button1 pressed
> Which I don't understand the reasoning behind. However it generates
> a problem to my application since I have some actions that are binded
> with the Leave event and when the button1 handler is called the program
> has already altered some structures.
> Is there a way forbit the calls to Leave/Enter before the Button1?
>
> Many thanks in advance
> Vasilis
>
> import tkinter as tk
> def enter(event): print("Enter event")
> def leave(event): print("Leave event")
> def button1(event): print("Button1 pressed")
>
> root = tk.Tk()
> frame = tk.Frame(root, bg="Yellow",
> takefocus=False,
> width=600, height=400)
> frame.pack(fill=tk.BOTH, expand=tk.YES)
> frame.bind("<Enter>", enter)
> frame.bind("<Leave>", leave)
> frame.bind("<Button-1>", button1)
> root.mainloop()
>



.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Virtue is a relative term.
                -- Spock, "Friday's Child", stardate 3499.1
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From Vasilis.Vlachoudis at cern.ch  Sun May 12 14:23:01 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Sun, 12 May 2019 18:23:01 +0000
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>,
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>,
 <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>

xubuntu to be more precise



________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Vasilis Vlachoudis [Vasilis.Vlachoudis at cern.ch]
Sent: Sunday, May 12, 2019 19:49
To: Michael Lange; tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter

Hi Michael,

I am using Ubuntu 19.04
with python 3.7 and tk 8.6.9+1

Vasilis Vlachoudis
Dep EN, CERN
CH-1211 GENEVA 23
SWITZERLAND

Phone:  +41-22 767 9851
GSM:    +41-75 411 4378


________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Saturday, May 11, 2019 00:57
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter

Hi,

On Thu, 9 May 2019 07:58:42 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all,
>
> I've just realized that the mouse click <Button-1> event generates as
> well a <Leave> followed by <Enter> event before.

what system are you using and which version of Tcl/Tk?
I cannot reproduce that behavior here (Debian, Tk 8.6.6).

Regards

Michael

> With the program below, if one clicks in the frame
> you get the messages printed
> Leave event
> Enter event
> Button1 pressed
> Which I don't understand the reasoning behind. However it generates
> a problem to my application since I have some actions that are binded
> with the Leave event and when the button1 handler is called the program
> has already altered some structures.
> Is there a way forbit the calls to Leave/Enter before the Button1?
>
> Many thanks in advance
> Vasilis
>
> import tkinter as tk
> def enter(event): print("Enter event")
> def leave(event): print("Leave event")
> def button1(event): print("Button1 pressed")
>
> root = tk.Tk()
> frame = tk.Frame(root, bg="Yellow",
> takefocus=False,
> width=600, height=400)
> frame.pack(fill=tk.BOTH, expand=tk.YES)
> frame.bind("<Enter>", enter)
> frame.bind("<Leave>", leave)
> frame.bind("<Button-1>", button1)
> root.mainloop()
>



.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Virtue is a relative term.
                -- Spock, "Friday's Child", stardate 3499.1
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From grubert at users.sourceforge.net  Sun May 12 15:54:19 2019
From: grubert at users.sourceforge.net (engelbert gruber)
Date: Sun, 12 May 2019 21:54:19 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>
Message-ID: <CAHnbgBPAQzLUV86oe54hybYxcVLMS+YVtHhBYoAZv87+JEJEXQ@mail.gmail.com>

not reproducable on macos python3.7.3 tkinter8.6.8



On Sun, 12 May 2019 at 20:23, Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch>
wrote:

> xubuntu to be more precise
>
>
>
> ________________________________________
> From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=
> cern.ch at python.org] on behalf of Vasilis Vlachoudis [
> Vasilis.Vlachoudis at cern.ch]
> Sent: Sunday, May 12, 2019 19:49
> To: Michael Lange; tkinter-discuss at python.org
> Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter
>
> Hi Michael,
>
> I am using Ubuntu 19.04
> with python 3.7 and tk 8.6.9+1
>
> Vasilis Vlachoudis
> Dep EN, CERN
> CH-1211 GENEVA 23
> SWITZERLAND
>
> Phone:  +41-22 767 9851
> GSM:    +41-75 411 4378
>
>
> ________________________________________
> From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=
> cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
> Sent: Saturday, May 11, 2019 00:57
> To: tkinter-discuss at python.org
> Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter
>
> Hi,
>
> On Thu, 9 May 2019 07:58:42 +0000
> Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:
>
> > Hi all,
> >
> > I've just realized that the mouse click <Button-1> event generates as
> > well a <Leave> followed by <Enter> event before.
>
> what system are you using and which version of Tcl/Tk?
> I cannot reproduce that behavior here (Debian, Tk 8.6.6).
>
> Regards
>
> Michael
>
> > With the program below, if one clicks in the frame
> > you get the messages printed
> > Leave event
> > Enter event
> > Button1 pressed
> > Which I don't understand the reasoning behind. However it generates
> > a problem to my application since I have some actions that are binded
> > with the Leave event and when the button1 handler is called the program
> > has already altered some structures.
> > Is there a way forbit the calls to Leave/Enter before the Button1?
> >
> > Many thanks in advance
> > Vasilis
> >
> > import tkinter as tk
> > def enter(event): print("Enter event")
> > def leave(event): print("Leave event")
> > def button1(event): print("Button1 pressed")
> >
> > root = tk.Tk()
> > frame = tk.Frame(root, bg="Yellow",
> > takefocus=False,
> > width=600, height=400)
> > frame.pack(fill=tk.BOTH, expand=tk.YES)
> > frame.bind("<Enter>", enter)
> > frame.bind("<Leave>", leave)
> > frame.bind("<Button-1>", button1)
> > root.mainloop()
> >
>
>
>
> .-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.
>
> Virtue is a relative term.
>                 -- Spock, "Friday's Child", stardate 3499.1
> _______________________________________________
> Tkinter-discuss mailing list
> Tkinter-discuss at python.org
> https://mail.python.org/mailman/listinfo/tkinter-discuss
> _______________________________________________
> Tkinter-discuss mailing list
> Tkinter-discuss at python.org
> https://mail.python.org/mailman/listinfo/tkinter-discuss
> _______________________________________________
> Tkinter-discuss mailing list
> Tkinter-discuss at python.org
> https://mail.python.org/mailman/listinfo/tkinter-discuss
>
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From paul at tartan.co.za  Mon May 13 02:19:58 2019
From: paul at tartan.co.za (Paul Malherbe)
Date: Mon, 13 May 2019 08:19:58 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <CAHnbgBPAQzLUV86oe54hybYxcVLMS+YVtHhBYoAZv87+JEJEXQ@mail.gmail.com>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>
 <CAHnbgBPAQzLUV86oe54hybYxcVLMS+YVtHhBYoAZv87+JEJEXQ@mail.gmail.com>
Message-ID: <278e66a9-4b9c-aeea-3545-b29d72767d30@tartan.co.za>

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From klappnase at web.de  Mon May 13 04:23:02 2019
From: klappnase at web.de (Michael Lange)
Date: Mon, 13 May 2019 10:23:02 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <278e66a9-4b9c-aeea-3545-b29d72767d30@tartan.co.za>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>
 <CAHnbgBPAQzLUV86oe54hybYxcVLMS+YVtHhBYoAZv87+JEJEXQ@mail.gmail.com>
 <278e66a9-4b9c-aeea-3545-b29d72767d30@tartan.co.za>
Message-ID: <20190513102302.e90f2cadbfffb9de24baa6fd@web.de>

Hi,

On Mon, 13 May 2019 08:19:58 +0200
Paul Malherbe <paul at tartan.co.za> wrote:

> Same happens on Ubuntu 18.04 with python 2.7.15/3.6.7 and tcl/tk 8.6.8

very strange. Maybe an issue with the WM? Do you also use Xfce? Did you
(or Vasilis) try a different WM?

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

	"What happened to the crewman?"
	"The M-5 computer needed a new power source, the crewman merely
         got in the way."
		-- Kirk and Dr. Richard Daystrom, "The Ultimate Computer",
		   stardate 4731.3.

From paul at tartan.co.za  Mon May 13 04:27:12 2019
From: paul at tartan.co.za (Paul Malherbe)
Date: Mon, 13 May 2019 10:27:12 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <20190513102302.e90f2cadbfffb9de24baa6fd@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>
 <CAHnbgBPAQzLUV86oe54hybYxcVLMS+YVtHhBYoAZv87+JEJEXQ@mail.gmail.com>
 <278e66a9-4b9c-aeea-3545-b29d72767d30@tartan.co.za>
 <20190513102302.e90f2cadbfffb9de24baa6fd@web.de>
Message-ID: <e1ee0c7d-f7a6-89ba-6287-f9eb823352af@tartan.co.za>

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From klappnase at web.de  Mon May 13 13:27:39 2019
From: klappnase at web.de (Michael Lange)
Date: Mon, 13 May 2019 19:27:39 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <e1ee0c7d-f7a6-89ba-6287-f9eb823352af@tartan.co.za>
References: <0BC70B5D93E054469872FFD0FE07220E0288FA7BB1@CERNXCHG53.cern.ch>
 <20190511005714.0b11d128aa2ed21dd0f02591@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB5FE@CERNXCHG53.cern.ch>
 <0BC70B5D93E054469872FFD0FE07220E0288FAB630@CERNXCHG53.cern.ch>
 <CAHnbgBPAQzLUV86oe54hybYxcVLMS+YVtHhBYoAZv87+JEJEXQ@mail.gmail.com>
 <278e66a9-4b9c-aeea-3545-b29d72767d30@tartan.co.za>
 <20190513102302.e90f2cadbfffb9de24baa6fd@web.de>
 <e1ee0c7d-f7a6-89ba-6287-f9eb823352af@tartan.co.za>
Message-ID: <20190513192739.b5bfb2fdeee81dc099f3394b@web.de>

On Mon, 13 May 2019 10:27:12 +0200
Paul Malherbe <paul at tartan.co.za> wrote:

> Yes, definitely seems to be an xfce thing. Tried with gnome and worked
> fine.

Good to know that. Unfortunately this does not help much with the OP's
question :-(
Maybe some property of the event could be checked, if there is a
difference betwen a "real" and a "fake" <Leave> or <Enter> event.

Regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Sometimes a feeling is all we humans have to go on.
		-- Kirk, "A Taste of Armageddon", stardate 3193.9

From mkiever at web.de  Mon May 13 13:32:10 2019
From: mkiever at web.de (mkiever at web.de)
Date: Mon, 13 May 2019 17:32:10 -0000
Subject: [Tkinter-discuss] =?utf-8?q?Button_event_calls_Leave/Enter?=
Message-ID: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>

Hello,

>very strange. Maybe an issue with the WM? Do you also use Xfce? Did you
>(or Vasilis) try a different WM?

To add some data about used WMs, not reproducible on:
Python 3.5.3 (some small tkinter patches)
tcl/tk 8.6.6
debian stretch
ctwm

Regards, Matthias
------------------------------------------------------------------------------
Matthias Kievernagel                                     mkiever/at/web/dot/de
------------------------------------------------------------------------------

From klappnase at web.de  Mon May 13 14:43:41 2019
From: klappnase at web.de (Michael Lange)
Date: Mon, 13 May 2019 20:43:41 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
References: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
Message-ID: <20190513204341.53f0d1d73654b02c0b79958e@web.de>

Hi,

On Mon, 13 May 2019 17:32:10 -0000
mkiever at web.de wrote:

> Hello,
>
> >very strange. Maybe an issue with the WM? Do you also use Xfce? Did you
> >(or Vasilis) try a different WM?
>
> To add some data about used WMs, not reproducible on:
> Python 3.5.3 (some small tkinter patches)
> tcl/tk 8.6.6
> debian stretch
> ctwm

oh, I forgot to mention earlier, not reproducible here on Debian Stretch
with IceWM.

Regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Power is danger.
		-- The Centurion, "Balance of Terror", stardate 1709.2

From Vasilis.Vlachoudis at cern.ch  Tue May 14 09:53:54 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Tue, 14 May 2019 13:53:54 +0000
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
References: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FACC2A@CERNXCHG53.cern.ch>

Thanks all for your replies.
I've saw that there is a difference in the event.state, but I cannot find any information
on what each bit represents.

V.


________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of mkiever at web.de [mkiever at web.de]
Sent: Monday, May 13, 2019 19:32
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter

Hello,

>very strange. Maybe an issue with the WM? Do you also use Xfce? Did you
>(or Vasilis) try a different WM?

To add some data about used WMs, not reproducible on:
Python 3.5.3 (some small tkinter patches)
tcl/tk 8.6.6
debian stretch
ctwm

Regards, Matthias
------------------------------------------------------------------------------
Matthias Kievernagel                                     mkiever/at/web/dot/de
------------------------------------------------------------------------------
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From klappnase at web.de  Tue May 14 12:26:37 2019
From: klappnase at web.de (Michael Lange)
Date: Tue, 14 May 2019 18:26:37 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FACC2A@CERNXCHG53.cern.ch>
References: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FACC2A@CERNXCHG53.cern.ch>
Message-ID: <20190514182637.7c5043e6d7bd2c3cb86171d7@web.de>

Hi,

On Tue, 14 May 2019 13:53:54 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Thanks all for your replies.
> I've saw that there is a difference in the event.state, but I cannot
> find any information on what each bit represents.
>

I modified your leave() callback using the values given at:
https://infohost.nmt.edu/tcc/help/pubs/tkinter/web/event-handlers.html
into:

def leave(event):
    s = event.state
    b1 = (s & 0x0100) != 0
    if b1:
        print('leave event with Button 1 pressed', 'event.state:', s)
    else:
        print('regular leave event', 'event.state:', s)

which actually seems to do the trick (btw., same behavior here with xfce,
so the exact Tk version apparently doesn't matter).
However, there still seems to be no way to tell if it is an actual Leave
event (i.e. mouse pointer dragged out of the window) while Button1 is
pressed or one of those fake-Xfce-Leave events.
The same "fake" events occur here also with Button2 and Button3, so there
might be more event.state values to consider.

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

On my planet, to rest is to rest -- to cease using energy.  To me, it
is quite illogical to run up and down on green grass, using energy,
instead of saving it.
		-- Spock, "Shore Leave", stardate 3025.2

From Vasilis.Vlachoudis at cern.ch  Wed May 15 01:50:24 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Wed, 15 May 2019 05:50:24 +0000
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <20190514182637.7c5043e6d7bd2c3cb86171d7@web.de>
References: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FACC2A@CERNXCHG53.cern.ch>,
 <20190514182637.7c5043e6d7bd2c3cb86171d7@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FAD126@CERNXCHG53.cern.ch>

Thanks. 
I did what you proposed
if event.state>=256:  # then mouse event, ignore...

Maybe a bug report should be opened in XFCE? In the X11 events it states
that Enter/LeaveNotify is only due to the cursor movement entering/exiting a window,
not a mouse press.

Vasilis

________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Tuesday, May 14, 2019 18:26
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Button event calls Leave/Enter

Hi,

On Tue, 14 May 2019 13:53:54 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Thanks all for your replies.
> I've saw that there is a difference in the event.state, but I cannot
> find any information on what each bit represents.
>

I modified your leave() callback using the values given at:
https://infohost.nmt.edu/tcc/help/pubs/tkinter/web/event-handlers.html
into:

def leave(event):
    s = event.state
    b1 = (s & 0x0100) != 0
    if b1:
        print('leave event with Button 1 pressed', 'event.state:', s)
    else:
        print('regular leave event', 'event.state:', s)

which actually seems to do the trick (btw., same behavior here with xfce,
so the exact Tk version apparently doesn't matter).
However, there still seems to be no way to tell if it is an actual Leave
event (i.e. mouse pointer dragged out of the window) while Button1 is
pressed or one of those fake-Xfce-Leave events.
The same "fake" events occur here also with Button2 and Button3, so there
might be more event.state values to consider.

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

On my planet, to rest is to rest -- to cease using energy.  To me, it
is quite illogical to run up and down on green grass, using energy,
instead of saving it.
                -- Spock, "Shore Leave", stardate 3025.2
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From klappnase at web.de  Wed May 15 05:18:35 2019
From: klappnase at web.de (Michael Lange)
Date: Wed, 15 May 2019 11:18:35 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FAD126@CERNXCHG53.cern.ch>
References: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FACC2A@CERNXCHG53.cern.ch>
 <20190514182637.7c5043e6d7bd2c3cb86171d7@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAD126@CERNXCHG53.cern.ch>
Message-ID: <20190515111835.e5eb51fe8082333ec7b77e84@web.de>

Hi,

On Wed, 15 May 2019 05:50:24 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Thanks.
> I did what you proposed
> if event.state>=256:  # then mouse event, ignore...
>
> Maybe a bug report should be opened in XFCE? In the X11 events it states
> that Enter/LeaveNotify is only due to the cursor movement
> entering/exiting a window, not a mouse press.
>

I noticed when trying on Debian Sid that LXDE appears also to be
affected (same behavior as with Xfce). I tried then to ask on debian-user
first if someone knows which package the bug should be reported to
(https://lists.debian.org/debian-user/2019/05/msg00668.html), I
guess probably some library both use.

Regards

Michael




.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

	"I think they're going to take all this money that we spend now
         on war and death --"
	"And make them spend it on life."
		-- Edith Keeler and Kirk, "The City on the Edge of
                   Forever", stardate unknown.

From klappnase at web.de  Thu May 16 18:26:40 2019
From: klappnase at web.de (Michael Lange)
Date: Fri, 17 May 2019 00:26:40 +0200
Subject: [Tkinter-discuss] Button event calls Leave/Enter
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FAD126@CERNXCHG53.cern.ch>
References: <0M7snk-1gUzUQ1SIC-00vRJ1@smtp.web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FACC2A@CERNXCHG53.cern.ch>
 <20190514182637.7c5043e6d7bd2c3cb86171d7@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FAD126@CERNXCHG53.cern.ch>
Message-ID: <20190517002640.1b0ce114ca8e9bab5ea4af32@web.de>

Hi,

On Wed, 15 May 2019 05:50:24 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Thanks.
> I did what you proposed
> if event.state>=256:  # then mouse event, ignore...
>
> Maybe a bug report should be opened in XFCE? In the X11 events it states
> that Enter/LeaveNotify is only due to the cursor movement
> entering/exiting a window, not a mouse press.
>

fyi, I now filed a bug report here:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929090

Regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

You speak of courage.  Obviously you do not know the difference between
courage and foolhardiness.  Always it is the brave ones who die, the
soldiers.
		-- Kor, the Klingon Commander, "Errand of Mercy",
		   stardate 3201.7

From Vasilis.Vlachoudis at cern.ch  Wed May 29 09:01:16 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Wed, 29 May 2019 13:01:16 +0000
Subject: [Tkinter-discuss] ttk.Notebook: autohide
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FD914D@CERNXCHG51.cern.ch>

Hi all

I am using the ttk.Notebook for an editor like application and I want to implement
something like autohide functionality for the tabheadings when there is only one tab,
and to reappear when there are more than one.

Is there some function to set the height to 0 for the headings of "pack_forget" equivalent
in the style?

Thanks in advance
Vasilis
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From klappnase at web.de  Wed May 29 17:56:50 2019
From: klappnase at web.de (Michael Lange)
Date: Wed, 29 May 2019 23:56:50 +0200
Subject: [Tkinter-discuss] ttk.Notebook: autohide
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FD914D@CERNXCHG51.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E0288FD914D@CERNXCHG51.cern.ch>
Message-ID: <20190529235650.b1e1217391893b3b17e67e7d@web.de>

Hi,

On Wed, 29 May 2019 13:01:16 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all
>
> I am using the ttk.Notebook for an editor like application and I want
> to implement something like autohide functionality for the tabheadings
> when there is only one tab, and to reappear when there are more than
> one.
>
> Is there some function to set the height to 0 for the headings of
> "pack_forget" equivalent in the style?

it seems you can show or hide the tabs with something like:

s=ttk.Style()
# store default layout options
tablayout = s.layout('TNotebook.Tab')
# hide tabs
s.layout('TNotebook.Tab', [])
# show tabs again
s.layout('TNotebook.Tab',tablayout)

Idea borrowed from:
https://stackoverflow.com/questions/26923010/how-do-i-hide-the-entire-tab-bar-in-a-tkinter-ttk-notebook-widget

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

There is an old custom among my people.  When a woman saves a man's
life, he is grateful.
		-- Nona, the Kanuto witch woman, "A Private Little War",
		   stardate 4211.8.

From Vasilis.Vlachoudis at cern.ch  Thu May 30 15:49:33 2019
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Thu, 30 May 2019 19:49:33 +0000
Subject: [Tkinter-discuss] ttk.Notebook: autohide
In-Reply-To: <20190529235650.b1e1217391893b3b17e67e7d@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E0288FD914D@CERNXCHG51.cern.ch>,
 <20190529235650.b1e1217391893b3b17e67e7d@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0288FDAB3E@CERNXCHG51.cern.ch>

Many thanks Michael.
The recipe works the tab bar disappears (and reappears), but the space of the tabs is not reclaimed.
the child-window is not resized to get the extra space.
If I resize the toplevel window with the mouse then it works.

Is there a way to force the layout manager to recalculate all widgets?

Best regards
Vasilis




________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Wednesday, May 29, 2019 23:56
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] ttk.Notebook: autohide

Hi,

On Wed, 29 May 2019 13:01:16 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all
>
> I am using the ttk.Notebook for an editor like application and I want
> to implement something like autohide functionality for the tabheadings
> when there is only one tab, and to reappear when there are more than
> one.
>
> Is there some function to set the height to 0 for the headings of
> "pack_forget" equivalent in the style?

it seems you can show or hide the tabs with something like:

s=ttk.Style()
# store default layout options
tablayout = s.layout('TNotebook.Tab')
# hide tabs
s.layout('TNotebook.Tab', [])
# show tabs again
s.layout('TNotebook.Tab',tablayout)

Idea borrowed from:
https://stackoverflow.com/questions/26923010/how-do-i-hide-the-entire-tab-bar-in-a-tkinter-ttk-notebook-widget

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

There is an old custom among my people.  When a woman saves a man's
life, he is grateful.
                -- Nona, the Kanuto witch woman, "A Private Little War",
                   stardate 4211.8.
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From klappnase at web.de  Thu May 30 18:33:22 2019
From: klappnase at web.de (Michael Lange)
Date: Fri, 31 May 2019 00:33:22 +0200
Subject: [Tkinter-discuss] ttk.Notebook: autohide
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0288FDAB3E@CERNXCHG51.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E0288FD914D@CERNXCHG51.cern.ch>
 <20190529235650.b1e1217391893b3b17e67e7d@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0288FDAB3E@CERNXCHG51.cern.ch>
Message-ID: <20190531003322.22a3008bed28a011b6a3f39e@web.de>

Hi,

On Thu, 30 May 2019 19:49:33 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Many thanks Michael.
> The recipe works the tab bar disappears (and reappears), but the space
> of the tabs is not reclaimed. the child-window is not resized to get
> the extra space. If I resize the toplevel window with the mouse then it
> works.

oh, I see. This "works" also vice versa here, the tab only reappears
after resizing the window with the mouse. Too bad, looks like a bug to me.

>
> Is there a way to force the layout manager to recalculate all widgets?
>

I am not sure how to do this, except with an ugly hack like:

def hidetabs(ev):
    s.layout('TNotebook.Tab', [])
    nb.pack(expand=0)
    nb.update_idletasks()
    nb.pack(fill='both', expand=1)

But that looks rather stupid and besides causes an annoying "flickering"
effect. The flickering seems to be a bit better with a "minimally
invasive" re-packing, as in

def hidetabs(ev):
    s.layout('TNotebook.Tab', [])
    info = nb.pack_info()
    px = info['padx']
    del info['padx']
    nb.pack(padx=px + 1, **info)
    nb.update_idletasks()
    nb.pack(padx=px, **info)

but this looks somehow even more stupid.
But maybe I just miss something obvious?

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

"Can you imagine how life could be improved if we could do away with
jealousy, greed, hate ..."

"It can also be improved by eliminating love, tenderness, sentiment --
the other side of the coin"
		-- Dr. Roger Corby and Kirk, "What are Little Girls Made
                   Of?", stardate 2712.4