9/6/2023 0 Comments Multitouch test app![]() ![]() Recognizing MUMT’s potential to transform how users interact with their devices, Lenovo recently introduced the YOGA Home series of tabletop PCs. Multi-user, multi-touch ( MUMT) technology enables multiple users to interact on one platform using 10-finger touch and hand gestures. Get your hands on a whole new platform for building interactive touchscreen apps. Lenovo is bringing multi-user & multi-touch (10 finger-touch!) tech to your desktop. We have UPDD compatible TUIO servers, that receive touch directly from the driver via the UPDD API, for Windows and MacOS but have not created one for Linux - contact us to discuss further if a UPDD TUIO server is required.Move over, swipe and drag. If running a TUIO client application you will need a TUIO server installed to receive touch input and post out on the TUIO protocol. Note that the exact details in these outputs may vary. If UPDD single touch is listed instead check the setting uinput.multi_touchĪssuming the device is listed, enter the number (10 in this example) and you will see the attributes of the device.Īnd this is the end of the data when touches stop: If this does not exist and no other UPDD entries are seen then UPDD is not running or is not configured correctly. In this example the UPDD MT virtual device is device 10: You can use evtest to see information about the virtual driver and what/if any events are occurring.Įnter sudo evtest in a bash shell to list the devices. If touch or a specific application is not working when configured via uinput it might be useful to examine the status of the UPDD virtual device and the output from it. This is independent of the Linux event system so will work in all cases. If you are developing software to support multi-touch you can use the UPDD API. You can also tap with 2 fingers to get a context menu in Chrome. Now move your fingers closer together and note that the screen image returns to its original size. ![]() The screen image size should gradually increase. With the browser window focused, place 2 fingers on the screen near the center and move them away from each other. ![]() Therefore, for a first test we recommend that you install Chrome or Chromium. This official documentation suggests otherwise but we have tested with a range of hardware and not seen anything to suggest this does work in the current version. We believe that when using Ubuntu with the Unity desktop certain gestures should work but Unity version 7.4.0 used during our tests does not appear to support multi-touch gestures, or if it does, we have not been successful in enabling it. The state of out of the box support is difficult to determine for Linux distributions.
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