> On 18-05-2016, at 9:25 AM, marcel.taeumel <Marcel.Taeumel at hpi.de> wrote:

> The idea of using event filters to actually transform events is interesting. 

Filters can often be useful. We have, for example, the various canvases and scroll-wrapping morphs which filter how input and output is seen by the wrapped bitmaps etc. An obvious event filter (and maybe a stupid one in the real world) would be one that centralises the mouse button swapping; if button swapping is turned on it, err, swaps the button value around.  Right now we have a centralised place in EventSensor>processEvent: for something that global (and seriously - for a mouse type event we check the platform name every time?) but having a type of filter involved at lower levels would allow some morphs to *not* get swapped buttons. I dunno, maybe useful for testing how the UI behaves on a different GUI?

If you pass your events *through* a filter instead of just having them on the side then you can do much more. 

> 
> How would a fake event filter be triggered if not by real events?

If some morph/app has a suitable event filter then clearly we can transform any incoming event into any other kind of event (as long as it is one that the morph will not raise an error for) as they are sent by the whole Hand/PasteUp complex. To trigger a faking-filter I guess the best thing would be to throw a FakeEvent at the event handling code at whatever level you need (anywhere from the local world PasteUpMorph on down to your local morph of interest) and let you filter convert that to whatever it wants. Why not simply make the ‘actual’ event type and pass that in? You might have a variety of faking-filters doing different things and want to test them, maybe you want the FakeEvents to be easily assembled by parsing a socket stream or file, I don’t know. It just needs you to bypass the eventsensor and push an event.

I honestly don’t know if it’s an actually useful idea.

tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Asking whether machines can think is like asking whether submarines can swim.