On Tue, 2009-12-01 at 17:37 +0100, Serge Lages wrote: > Thanks Robert, I've totally missed the osgWidget part, it is clearly > the place for such mechanism. > > The interactive image plugin we're developping is not a browser but is > not so far from it, do you think it can be valuable to have an > InteractiveImage base class for sharing features between browsers and > other interactive images ? > > I have another question : to get events from our images, we've > implemented from the osg::Image base class the "update" method. But > what's the better way to call this update method ? Currently our > "quick and dirty" method is to put a custom update callback to the > geode or the geometry using the image which call explicitly the > update. Is there any other way to have this update method called ?
I'd be very interested in your opinion on this as well, Robert. I often find myself wishing that Image objects had an update() method as well, but I don't know if I'm misusing OSG or it makes the most sense for you to put logic in the "parent" Geode instead, like Sergey is doing. > On Tue, Dec 1, 2009 at 4:56 PM, Robert Osfield > <[email protected]> wrote: > Hi Serge, > > The basic event handling support in osg::Image is to enable > browser > style interactivity but is limited to only putting events into > the > osg::Image subclass - there is no support for getting events > out. > There is a limit to the type of events you could get out too - > as > osg::Image doesn't know anything about the potential > sublcasses from > osg::Image. The InteractiveImageHandler is also in a similar > position > - it knows nothing about the osg::Image subclasses - just > enough about > osg::Image to pass events into it. > > To get events for the browser subclass from osg::Image one > will need > to know about that specific subclass i..e > osgWidget::BrowserImage. > This as yet isn't geared up for passing any events back or > providing a > callback mechanism for it, but this is for sure the place to > put them. > This way you could do a dynamic cast to BrowserImage and then > add the > extra handling your need. To do this we'll need to extend > BrowserImage but this would be perfectly in keeping, > BrowserImage > itself is still in it's infancy, a first pass at what will be > required > for more fully featured browsing. > > Robert. > > > On Tue, Dec 1, 2009 at 3:38 PM, Serge Lages > <[email protected]> wrote: > > Hi Robert and all, > > > > I have a question about plugins and how to handle a specific > case. Let's say > > that I have a plugin which returns an interactive image > (like the pdf or > > browser one), I associate the image to an interactive image > handler to send > > it events. Up to here, everything works as expected, but > now, I need my > > interactive image to send me information about the > navigation. For example > > with the browser plugin, let's say I would like my > interactive image to tell > > me when the user clicks on a link to be able to filter the > websites where > > the user browses. How can I handle this case without > including some code > > from the plugin ? In a more generic way, do you think it can > be possible to > > have a generic path for the interactive images to send back > events to the > > application ? The InteractiveImageHandler should be the > place to put such a > > mechanism ? > > > > Thanks in advance for any help on this subject ! > > Cheers, > > > > -- > > Serge Lages > > http://www.tharsis-software.com > > > > > _______________________________________________ > > osg-users mailing list > > [email protected] > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > _______________________________________________ > osg-users mailing list > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > -- > Serge Lages > http://www.tharsis-software.com > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Follow us on Twitter! http://twitter.com/emperorlinux EmperorLinux, Inc. http://www.emperorlinux.com 1-888-651-6686 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
