[Rd] getGraphicsEvent() alternative for cairo graphics device?

[Paul Murrell]

Great.  Thanks!

Paul

On 14/11/16 13:41, frederik at ofb.net wrote:
> Hi Paul,
>
> Thank you, for some reason I didn't seem to get an email notification
> for your bugzilla comment!
>
> I will try to send you something shortly.
>
> Frederick
>
> On Mon, Nov 14, 2016 at 08:55:20AM +1300, Paul Murrell wrote:
>> Hi
>>
>> The current status is that I am keen for people to contribute some testing
>> code (see https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16951)
>>
>> There were also some getGraphicsEvent() changes/fixes suggested by Richard
>> Bodewits (cc'ed), for which I am also seeking test code.
>>
>> Paul
>>
>> On 13/11/16 09:00, frederik at ofb.net wrote:
>>> Hi Paul,
>>>
>>> Just checking in to see what the status is.
>>>
>>> From my perspective it seems logical to split off X11 into a separate
>>> package, so development can proceed at a reasonable rate, but I
>>> haven't yet tried to see if that's even possible.
>>>
>>> Thanks,
>>>
>>> Frederick
>>>
>>> On Tue, Jul 26, 2016 at 09:23:35AM +1200, Paul Murrell wrote:
>>>> Hi
>>>>
>>>> Taking a look at those patches is now on my todo list, so I may be in touch
>>>> with both of you at some point to request some testing.
>>>>
>>>> Paul
>>>>
>>>> On 26/07/16 07:17, frederik at ofb.net wrote:
>>>>> Dear Daniel Greenidge,
>>>>>
>>>>> To enable getGraphicsEvent on Cairo, you have two patches to choose
>>>>> from:
>>>>>
>>>>> https://bugs.r-project.org/bugzilla/show_bug.cgi?id=14364
>>>>> https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16951
>>>>>
>>>>> The second one is by me, and the first one is from five years ago by
>>>>> Hugo Mildenberger.
>>>>>
>>>>> Both patches are very simple, they move some lines enabling
>>>>> getGrahpicsEvent outside of a if(!cairo) statement. My patch also adds
>>>>> the ability to execute code (e.g. for animation) while the interface
>>>>> is idle.
>>>>>
>>>>> Top guy Duncan Murdoch has expressed that he doesn't have time to work
>>>>> on applying these patches, and I haven't had any responses from the
>>>>> rest of the R Core Team. I was thinking that perhaps your best bet is
>>>>> to try to create a package called e.g. "X11-fixes" which people can
>>>>> use to get a better X11 library (there is also a bug waiting to be
>>>>> fixed from 2001:
>>>>> https://bugs.r-project.org/bugzilla/show_bug.cgi?id=16702).
>>>>>
>>>>> I don't know if CRAN would accept such a package, or if you'd have to
>>>>> distribute it via GitHub, but R has excellent tools to facilitate the
>>>>> distribution of code via packages. Whether the R kernel exports enough
>>>>> functions to allow a package to take over event handling, I'm not
>>>>> sure. I was intending to look more into the details of this
>>>>> possibility but haven't had time.
>>>>>
>>>>> Best wishes,
>>>>>
>>>>> Frederick
>>>>>
>>>>> On Mon, Jul 25, 2016 at 02:15:59PM -0400, Daniel Greenidge wrote:
>>>>>> Hi all,
>>>>>>
>>>>>> I'm writing an interactive plotting function for viewing fMRI
>>>>>> datasets. Currently, I get keypresses using
>>>>>> grDevices::getGraphicsEvent().
>>>>>>
>>>>>> Unfortunately getGraphicsEvent() only supports the X11(type="Xlib")
>>>>>> graphics device on Unix systems. The Xlib device doesn't support
>>>>>> buffering (i.e. dev.hold() and dev.flush()), so redrawing the plots
>>>>>> causes lots of flickering.
>>>>>>
>>>>>> Is there a way to get keypresses while using the cairo graphics
>>>>>> device? Alternatively, is there a way to prevent flickering with the
>>>>>> Xlib graphics device?
>>>>>>
>>>>>> Best,
>>>>>> Daniel Greenidge
>>>>>>
>>>>>> ______________________________________________
>>>>>> R-devel at r-project.org mailing list
>>>>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>>>>
>>>>>
>>>>> ______________________________________________
>>>>> R-devel at r-project.org mailing list
>>>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>>>
>>>>
>>>> --
>>>> Dr Paul Murrell
>>>> Department of Statistics
>>>> The University of Auckland
>>>> Private Bag 92019
>>>> Auckland
>>>> New Zealand
>>>> 64 9 3737599 x85392
>>>> paul at stat.auckland.ac.nz
>>>> http://www.stat.auckland.ac.nz/~paul/
>>>>
>>
>> --
>> Dr Paul Murrell
>> Department of Statistics
>> The University of Auckland
>> Private Bag 92019
>> Auckland
>> New Zealand
>> 64 9 3737599 x85392
>> paul at stat.auckland.ac.nz
>> http://www.stat.auckland.ac.nz/~paul/
>>

-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/