matplotlib-users

[Matplotlib-users] tooltips in matplotlib?

[Martin S. <sc...@ms...>]

Hi,

I'd like to be able to pop up a tooltip on, say, a matplotlib 
'motion_notify_event', or maybe just a 'button_press_event'. Does MPL 
have the ability to control tooltips, or do I have to drop down to the 
specific backend to do that (wxagg in my case).

If the latter, anyone know off the top of their head how to do this in 
wxagg?

Thanks,

Martin

Re: [Matplotlib-users] tooltips in matplotlib?

[Ken M. <mc...@ii...>]

On Sep 11, 2006, at 5:28 PM, Martin Spacek wrote:
>
> I'd like to be able to pop up a tooltip on, say, a matplotlib
> 'motion_notify_event', or maybe just a 'button_press_event'. Does MPL
> have the ability to control tooltips, or do I have to drop down to the
> specific backend to do that (wxagg in my case).

I don't think there's a backend-level API for drawing tooltips.

> If the latter, anyone know off the top of their head how to do this in
> wxagg?

Unfortunately, I don't think wxWidgets exposes the functionality for  
displaying a wx.ToolTip.  You might be able to fake it with a  
wx.PopupWindow.

Ken

Re: [Matplotlib-users] tooltips in matplotlib?

[Christopher B. <Chr...@no...>]

Ken McIvor wrote:
> Unfortunately, I don't think wxWidgets exposes the functionality for  
> displaying a wx.ToolTip.

Yes, it does, though I haven't used it:

wx.TipWindow

Shows simple text in a popup tip window on creation. This is used by 
wx.SimpleHelpProvider to show popup help. The window automatically 
destroys itself when the user clicks on it or it loses the focus.

You may also use this class to emulate the tooltips when you need finer 
control over them than what the standard tooltips provide.


-Chris


-- 
Christopher Barker, Ph.D.
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Re: [Matplotlib-users] tooltips in matplotlib?

[Martin S. <sc...@ms...>]

Thanks for the help Ken and Christopher! Attached is an example file of 
what I've got running now. It should run on its own. A wx tooltip pops 
up whenever the mouse is over the axes. The tooltip's hangs obediently 
off of the bottom right of the mouse cursor. Its string is updated to 
reflect the current position of the mouse in data coordinates.

I'll make a post to the devel list, maybe get this added to the MPL 
examples.

Cheers,

Martin

Re: [Matplotlib-users] tooltips in matplotlib?

[Christopher B. <Chr...@no...>]

Martin Spacek wrote:
> Attached is an example file of 
> what I've got running now. It should run on its own. A wx tooltip pops 
> up whenever the mouse is over the axes.

cool.

I had to make a change to get it to run:

mpl.use('WXAgg') has to come before "import pylab"

once running, it's not working quite right: the tooltip always is at the 
bottom of the Window, though it does track the X location.

oddly it looks likeit's getting it's coords in figure units (0 to 1), 
whcih shouldn't work with a wxWindow.

Also, I'm getting the tooltip even when the window doesnot have focus 
and is under other windows -- at least when the mouse is over an exposed 
part of the window. That's probably a wx issue.

Python 2.4.3
 >> wx.__version__
'2.6.3.0'
 >>> matplotlib.__version__
'0.87.5'

wxGTK on on Fedora core 4 linux.


-Chris





-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chr...@no...