Hi Martin, I like this approach. I'd voted also for the second option, which you chose, that QmitkRenderWindow et al, emit Gestures, this allows to use already existing GestureManagers for different frameworks. Also the 6 steps of event processing look really good!
I don't know much about QML so I googled a bit and found this: http://blog.qt.digia.com/blog/2010/10/05/getting-in-touch-with-qt-quick-gestures-and-qml/ Can't we use this for basic gesture recognition ? Best, Christian -----Original Message----- From: Martin Klemm [mailto:martin.kl...@hs-offenburg.de] Sent: Mittwoch, 28. Januar 2015 19:36 To: Clarkson, Matt Cc: MITK Subject: Re: [mitk-users] Touch interaction Hi Christian, Hi Matt, Hi all the others that are interested in this topic, after some days of researching ways to implement touch interaction I found a way. One thing that I recognized was that we do not want to bother with touch events, what we really want are detected gestures. In one way or another the touch events have to be converted into a gesture. There are two possible places to do this: 1. directly in the DisplayInteractor 2. in the QmitkRenderWindow respectively in the QmlMitkRenderWindowItem I decided to go with the second option. Qt already implements a GestureManager which has several GestureRecognizers to recognize the most common gestures. In the QmitkRenderWindow this manager can be accessed directly. So before converting the QT event into a mitk event the gesture manager will check the event for a possible gesture. If a gesture is detected a gesture event is emitted (after it is converted into a mitk gesture event). If no gesture is detected the incoming event is emitted. Subsequently the DisplayInteractor can react to these gesture events. But (!) this way just works for "standard" Qt applications and not for QML applications because they work slightly different. In the QmlMitkRenderWindowItem there is no gesture manager available, which is why I implemented my own one. This gesture manager is completely qt independent and could therefor work in all possible mitk applications (together with the DisplayInteractor). So the way I imagine it is the following: 0. User touches the screen 1. QtTouchEvents are emitted 2. In the QmitkRenderWindow, the QmlMitkRenderWindowItem or any other RenderWindowItem the incoming touch events have to be converted into a mitkTouchEvent 3. This touch event is passed to the gesture manager 4. The gesture manager tries to recognize a gesture 5. If a gesture is detected a mitkGestureEvent is passed to the render window, if not the touch event is handled 6. The Display Interactor handles the gesture event as defined in the state machine. So far I was not able to test it in the Workbench application because I am working with Qml. But it should not be a big difference. Moreover this is still a work in progress. What do you think about this approach? Best Martin On 27.01.2015 22:09, Clarkson, Matt wrote: > Hi Martin, > > How's it going? If you had a design doc I could look at, then Im interested. > Maybe we can contribute? > > M > > > On 27 Jan 2015, at 16:24, Weber, Christian(1) <ch.we...@dkfz-heidelberg.de> > wrote: > >> Hi Martin, >> >> I your approach sounds good, we designed the Interaction having the >> application to a touch screen in mind, but so far haven't implemented >> anything in this area. >> I also think that is good to integrate it directly into the >> DisplayInteractor to handle such events, just to be sure, you will need to >> map and create to some "mitkTouchInteraction" Events that derive from >> InteractionEvent such that the Interaction Framework remains GUI Framework >> independent. >> >> >> I'll be happy to assist if there are any more question, or look over any >> designs. >> >> Best >> Christian >> >> -----Original Message----- >> From: Martin Klemm [mailto:martin.kl...@hs-offenburg.de] >> Sent: Donnerstag, 22. Januar 2015 18:01 >> To: mitk-users@lists.sourceforge.net >> Subject: [mitk-users] Touch interaction >> >> Hi, >> >> I am currently trying to implement the interaction with a touch screen. >> Did anyone work on this before? >> >> Our software is based on the QuickRender (QML) example and we use a touch >> screen instead of a mouse to interact with it. I am already able to receive >> the touch interactions from QML. These interactions I could send to the >> DisplayInteractor to process them. I would extend the DisplayInteractor in >> such way that additionally to the MouseEvents it could also process >> TouchEvents like Pinch, Zoom or Scroll. >> >> Is anyone interested in such an implementation, knows a better way or has >> experience to share? >> >> Best >> >> Martin >> >> --------------------------------------------------------------------- >> --------- New Year. New Location. New Benefits. New Data Center in >> Ashburn, VA. >> GigeNET is offering a free month of service with a new server in Ashburn. >> Choose from 2 high performing configs, both with 100TB of bandwidth. >> Higher redundancy.Lower latency.Increased capacity.Completely compliant. >> http://p.sf.net/sfu/gigenet >> _______________________________________________ >> mitk-users mailing list >> mitk-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/mitk-users >> >> --------------------------------------------------------------------- >> --------- Dive into the World of Parallel Programming. The Go >> Parallel Website, sponsored by Intel and developed in partnership >> with Slashdot Media, is your hub for all things parallel software >> development, from weekly thought leadership blogs to news, videos, >> case studies, tutorials and more. Take a look and join the >> conversation now. http://goparallel.sourceforge.net/ >> _______________________________________________ >> mitk-users mailing list >> mitk-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/mitk-users > -- Martin Klemm Hochschule Offenburg Badstraße 24 77652 Offenburg Tel. +49 781 / 205 - 4681 -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v2.0.22 (MingW32) mQENBFLmUekBCACp46Wgg+gXLpnQYlGjRS0jBVWmL+9boonSl+Imp//bJ2I9XYxE CJJvjQM9a2W8OZoFDY4gGieDqk2JigGWoEPoXrMJh7RjaRppmWkM5EufXmLiO0Yw vsjo22PFZPCVs6TohgboQleV8Dy1BxEUjpzaesy1x+2sE/fNKm8hAYzaLsSlwy6Y s/g9/o8PRmm5miqakUPV3o2jy4VimGliD7FNlns6P2ePwu2mLL5iR+mqF6oUwRA2 rDjtKQZSJgyaHfdi3YcOlQXnnmT0JKcguoE1B7Xs8tYRXU2vEw2ObuF+FeksH2iM ChqNWMSmgVQNiQEYtEfz+mq4iviYuzlaBxirABEBAAG0K01hcnRpbiBLbGVtbSA8 bWFydGluLmtsZW1tQGhzLW9mZmVuYnVyZy5kZT6JAT8EEwECACkFAlLmUekCGyMF CQlmAYAHCwkIBwMCAQYVCAIJCgsEFgIDAQIeAQIXgAAKCRC2Jqc/SGZiKevQB/96 Fjw+45qnyJng7mN5e4IUVKPz5VqLD1rnEWBd0bL5uiL3OcXk7lyaeFD1Sx3TlvDL QXHbaBh4D13S38j75h0UJoV7ccKkP4SiObzzBpaIP0LKrgddTDBMUaLNpkIkPTol CyYtLF9Lyrs262TABgQfU/u2K8USVZmUrMh2nR1YDI6BDhyUnXn7ZQ6gasY8F8gv LvKghox52Wsw9cui8ATwIZoKV46X7FrhMX+G6nmJ11Cu1/i1bVUbN8bzlrjoWGnQ TFi4M1H7z1/CSUmkCrNuHtTg1YBnP1TI0aBSBgUsJB+SbGm4B0QTZTnYA42DVPZD YlhtoigOoUhhCgdeKXEcuQENBFLmUekBCADURioNxPq/foCkuXnSf4VbxvF0DDZ7 pO18dW55AzVvlSKWrahx71xgnP52xKn0EEuuqTZYfY3RzHimeGXqOCbEWkk6eFkt Sg/fMH4utD6KV+ewGb1mlRUEZgiwxbQyb+dlM1j9GmTNlr5/8VcMS5lNqCqgu59P P59ThEGwufSeLMBf4eCidltWdh9fjqZwYnz6Y8ASjJGVgf12i2P8Mpbx7QHYecHt nnvj4x8t9yw9h1QPdfvTIFvqp0L2MDdeAdnFhMPhNHY7RtudLuQlLDIGFqPGScJQ EKiH3Upc9HADUO4vh6mT6OzOWhLu6cwu1XCmh74sKD+UblgOG/fd7AhDABEBAAGJ ASUEGAECAA8FAlLmUekCGwwFCQlmAYAACgkQtianP0hmYim/JggAlcwN5b/qBObo 65/GMIX4VXb+f6/U7F6tc/KOFyypWYN6aJ3StwBbkFfeEd2ZeuTmMNyG49rxBUpl z9JcEB27YPYGGh1aJWeVDpqSV6VMTSnJC+Dlsm1eAktpWhTCgs9yeh2RY+HWfIil XR97+TiaznySTNqVs94zX7ynBg1Tjh+tZJgU8HUXAsuWQACWrmKHVH+ggSaBePmH 5em0wBkQD+VxYlVe00lNRnJvBtP0cRys4mRDWJYJb6mlDxQ8nv8krsDT6lUeRsYU ct8cU8YCERNyAJ+bH2y14ymer1k+vhZaHc5Fwrj9Jwbs1YVLpOZeaX66kDdkfWbR tjzbWAp3EQ== =6Xht -----END PGP PUBLIC KEY BLOCK----- ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ mitk-users mailing list mitk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mitk-users ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. 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