similar to: getGraphicsEvent on X11 and event queuing

Hi Frederik, >>>>> <frederik at ofb.net> >>>>> on Tue, 7 Jun 2016 15:20:05 -0700 writes: > ... I just realized that setGraphicsEventHandlers or > getGraphicsEvent could have an 'onIdle' callback, to be > called somewhere in the polling loop of gevents.c:163 - I > think this would solve my problem #2 in a minimally

... I just realized that setGraphicsEventHandlers or getGraphicsEvent could have an 'onIdle' callback, to be called somewhere in the polling loop of gevents.c:163 - I think this would solve my problem #2 in a minimally disruptive way. On Mon, Jun 06, 2016 at 06:38:45PM -0700, frederik at ofb.net wrote: > Hi R-Devel, > > I've been working on an oscilloscope project using an

Dear R-helpers, I've just started playing with getGraphicsEvent() in R, and was wondering if there is a simple way to stop this function waiting for input after a pre-defined time, instead of relying either on a non-NULL value from one of the event handlers or for a user-interrupt for it to halt (as per the R manual). The only way that I've thought of to make this work is using

Hi the list, I need to use getGraphicsEvent to plot two graph. On the following toy example: - the function b is ploting two graph depending on a parameter - the function a is calling b according to some user answers. It is suppose to call b until the user press Return, but it does not. b <- function(x){ dev.off(2);dev.off(3) windows();windows(3,3,xpos=0) dev.set(2);plot(1:x)

Hi the list, One of my package has an (other) error detected by memtest that I do not manage to understand. Here is the message that I get from Memtest --- 8< ---------------- > try(choice(cld1)) Error in switch(EXPR = choix, Up = { : EXPR must be a length 1 vector --- 8< ---------------- The choice function does call the choiceChangeParam function, which is: --- 8<

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

doKeybd() gets called in CHelpKeyIn() and NHelpKeyIn() in library/grDevices/src/devWindows.c, where the call is encapsulated in an 'if (dd->gettingEvent)' block. So the only times this code ever calls doKeybd() is when gettingEvent is in fact set. Further, it's called in two locations in X11_eventHelper(), in modules/X11/devX11.c, where the state of gettingEvent seems to be moot

Hey all. As in general it's a bad idea to allow an event handler to generate an event, and as comments in the code seem to suggest this isn't the intention either, I was wondering about recursion in getGraphicsEvent(). In main/gevents.c, both doMouseEvent() and doKeybd() have the following line; dd->gettingEvent = FALSE; /* avoid recursive calls */ And they reset it to TRUE

Hey all, new R user and first timer here. I've been using getGraphicsEvent() on an X11-Xlib device in a kind of interactive loop, and would like to be able to stop it from printing newlines in the console when I don't actually want to print a prompt. Even an empty "" value still causes a newline right now. To not break any code that depends on this behavior, I figured getting

Hi Is the correct patch to remove the setting of the gettingEvent flag or would it be better to flip the TRUE/FALSE setting (set to TRUE before handling then reset to FALSE after handling) ? Also, for this patch and for the other two you sent, one difficulty will be with testing the patches. I have no testing code for this, so would need at least a test or two from you (ideally someone

Dear R-Devel list members I'm facing as problem already known and linked to the use of getGraphicsEvent(prompt = "Waiting for input", ???????????????? onMouseDown = NULL, onMouseMove = NULL, ???????????????? onMouseUp = NULL, onKeybd = NULL, ???????????????? onIdle = NULL, ???????????????? consolePrompt = prompt) setGraphicsEventHandlers(which = dev.cur(), ...)

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

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 >

Thanks Frederick. Mark, if you have any examples to share, they would also be gratefully received. Paul On 14/11/16 14:53, frederik at ofb.net wrote: > Hi Paul, > > OK I tried not to make the examples too fancy. > > Please let me know what you think. They should probably be amended to > support the Windows platform, but I think that task would be much > easier for someone

Hi Martin, > Also, as you are studying the C code and the issues anyway, it > may be worthwhile to consider (as small as possible!) patches to > the source you could also post to the bugzilla site if you > prefer; attaching as text/plain to R-devel does work fine, too. Well, after your kind solicitation I went through all the touble of locally fixing getGraphicsEvent Cairo support

Hi Just taking a bit more of a look at this today (currently fixated on making sure I can build some good regression tests). The best thing you can do is to keep reminding me like this :) Paul On 09/12/16 11:19, frederik at ofb.net wrote: > Hi Paul, > > Thanks for your efforts. Do you have an idea when my patch(es) might > be committed? Is there anything I can do to help move this

Hi Paul, OK I tried not to make the examples too fancy. Please let me know what you think. They should probably be amended to support the Windows platform, but I think that task would be much easier for someone with access to Windows... By the way I'm Cc'ing Mark O'Connell who shared with me some great getGraphicsEvent examples - well, I found them useful, perhaps if these are going

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

Hi all, we are writing a cross browser Javascript control that enhances the HTML text input element in order to accept only digits (more or less). Supposing that ''domText'' is the DOM element corresponding to the HTML text input, we wrote the following: Event.observe(domText, "keypress", this.onKeyPress.bindAsEventListener(this)); where this.onKeyPress =

Hey all. Setting a time limit with setTimeLimit(), and then using getGraphicsEvent(), will cause graphics event handling for the current device to break on timeout, until the device is destroyed and recreated. The problem lies in do_getGraphicsEvent() checking the value of dd->gettingEvent and concluding it's being called recursively (ironically this same test fails to detect actual