Re: [E-devel] [e-users] "void *event_info", passed to Button events ("clicked").

[Carsten H. (T. R. <ra...@ra...>]

On Fri, 31 Jan 2014 12:47:22 -0500 Robert Heller <he...@de...> said:

> At Fri, 31 Jan 2014 14:12:35 -0200 Enlightenment users discussion & support
> 	<enl...@li...> wrote:
> 
> > 
> > On Fri, Jan 31, 2014 at 12:56 PM, Robert Heller <he...@de...> wrote:
> > > Where is this argument documented?  Specificly, which Evas event
> > > structure is passed for an elementary button widget for a "clicked"
> > > event?  I would like to get various event information, such as the x and
> > > y position of the mouse (I know this information is there somewhere,
> > > since it is part of the underlying X11 event).  Can I just cast the
> > > event_info pointer to a Evas_Event_Mouse_Down object?  Or is the
> > > event_info something else?  Nowhere in the elementary docs for the button
> > > widget
> > > (http://docs.enlightenment.org/stable/elementary/group__Button.html) says
> > > what is passed.  ALL of the examples totally ignore the third argument to
> > > the event callbacks and *nowhere* is this parameter documented, other
> > > than in the Evas docs which just say that it contains some event specific
> > > structure.
> > >
> > 
> > As a general rule, if the documentation for the widget doesn't say
> > what event_info is,
> > you can assume there's nothing there.
> 
> Well, that kind of sucks...
> 
> Second question: given an Evas_Object (what is passed into the "clicked"
> event callback -- I am assuming this is the elm_button object), is it
> possible to get the *root* x & y position?  I know that I can get the
> object's *relative* [to its parent] x and y via evas_object_geometry_get(),
> but how would I get the root window position?  I presume I would have to walk
> up the tree, but would this work correctly?

there i think you have a misunderstanding. evas_object_geometry_get() never
gets relative geometry. evas has no concept of relative geometry... everything
is absolute in canvas geomtery. (relative to canvas top-left)

> static
> void event_cb(void *data, Evas_Object *obj, void
> *event_info) {    
>     Evas_Coord relx, rely, topx, topy, rootx, rooty, w,
> h; Evas_Object *top = elm_object_top_widget_get ( obj );                      
>  
>     evas_object_geometry_get (obj, &relx, &rely, &w,
> &h); evas_object_geometry_get (top, &topx, &topy, NULL,
> NULL); rootx = topx +
> relx; rooty = topy + rely;                                
> 
>     ...
> }
> 
> Evas_Object *button = elm_button_add(win);
> evas_object_smart_callback_add(button, "clicked", event_cb, mumble);    
> 
> > 
> > > --
> > > Robert Heller             -- 978-544-6933 / he...@de...
> > > Deepwoods Software        -- http://www.deepsoft.com/
> > > ()  ascii ribbon campaign -- against html e-mail
> > > /\  www.asciiribbon.org   -- against proprietary attachments
> > >
> > >
> > >
> > >
> > > ------------------------------------------------------------------------------
> > > WatchGuard Dimension instantly turns raw network data into actionable
> > > security intelligence. It gives you real-time visual feedback on key
> > > security issues and trends.  Skip the complicated setup - simply import
> > > a virtual appliance and go from zero to informed in seconds.
> > > http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk
> > > _______________________________________________
> > > enlightenment-users mailing list
> > > enl...@li...
> > > https://lists.sourceforge.net/lists/listinfo/enlightenment-users
> > 
> > ------------------------------------------------------------------------------
> > WatchGuard Dimension instantly turns raw network data into actionable 
> > security intelligence. It gives you real-time visual feedback on key
> > security issues and trends.  Skip the complicated setup - simply import
> > a virtual appliance and go from zero to informed in seconds.
> > http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk
> > _______________________________________________
> > enlightenment-users mailing list
> > enl...@li...
> > https://lists.sourceforge.net/lists/listinfo/enlightenment-users
> > 
> >                                                                                                  
> 
> -- 
> Robert Heller             -- 978-544-6933 / he...@de...
> Deepwoods Software        -- http://www.deepsoft.com/
> ()  ascii ribbon campaign -- against html e-mail
> /\  www.asciiribbon.org   -- against proprietary attachments
> 
> 
>                                                                                                                             
> 
> ------------------------------------------------------------------------------
> WatchGuard Dimension instantly turns raw network data into actionable 
> security intelligence. It gives you real-time visual feedback on key
> security issues and trends.  Skip the complicated setup - simply import
> a virtual appliance and go from zero to informed in seconds.
> http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk
> _______________________________________________
> enlightenment-devel mailing list
> enl...@li...
> https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
> 


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
The Rasterman (Carsten Haitzler)    ra...@ra...