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Touch Gesture Recognition
Gesturing refers to the act of moving a finger or stylus across the overlay and having the panel recognize and process this motion
as a gesture.Once a gesture is detected, it is processed as another external button on the panel. This enables the user to design
pages that translate gesture operations into any functionality available to external buttons. In addition, a gesture velocity is
calculated and transmitted to the master along with the gesture type itself in a custom event message. Nothing will be processed if
the external button associated with this gesture has no page flip operations programmed, is disabled, or has no values programmed
for address, channel, level, string output or command output. The custom event, however, is always transmitted.
The following seven gesture types are supported:
1.
Swipe up
2.
Swipe down
3.
Swipe right
4.
Swipe left
5.
Clockwise circle
6.
Counter-clockwise circle
7.
Double-Tap
Gesture Velocity
A gesture "velocity" is calculated to represent the speed of the gesture. This is done by measuring the time from when the user first
presses the screen until the user releases. The following simplified velocities are supported and transferred to the master in the
custom event message:
1.
Fast
2.
Normal
3.
Slow
A precise velocity is sent in the custom event message which represents the velocity in terms of pixels per second for slides and
circles. For a double tap, this value is the total time in milliseconds from the first press to the second release.
Gesture Prioritization
It is important to prioritize the operation of the presses, moves and releases of the user to avoid confusion over what the user
intended. The following process is used to determine what the user meant whenever a gesture operation is defined globally or for
this page.
Gesture Prioritization
The user presses outside of a button or
slider and moves before releasing.
The user presses inside of a slider and
moves before releasing.
The user presses inside of a joystick
button and moves before releasing.
The user moves a movable popup page.
The user presses on a button and then
moves.
The user double taps on a button or slider. This will not be recognized as a gesture. This would be considered two quick press/release
The user double taps outside of a button
or slider.
Gesture VNC/Mouse Support
Gestures are recognized whether or not the user is using a finger or stylus on the panel's screen overlay, a mouse on a VNC
connection, or a mouse connected to the local USB port on the panel.
Gesture Custom Event
Whenever a gesture is recognized and processed a custom event is also sent to the master. The following values describe this
event:
CUSTOM_EVENT ADDRESS is 1
CUSTOM_EVENT EVENTID is 600
Custom.Value1 is the gesture number
Custom.Value2 is the simplified gesture velocity
Custom.Value3 is the precise gesture velocity
MVP-5200i Modero® ViewPoint® Touch Panel with Intercom - Instruction Manual
The firmware will always try to recognize a gesture as long as the user moves at least 20
pixels before the release occurs.
This will always be processed as a slider operation and no attempt will be made to recognize a
gesture.
This will always be processed as a joystick operation and no attempt will be made to
recognize a gesture.
This will always be processed as a popup page move and not a gesture.
In this case, the press will not be sent for the first 0.15 second. If the user has moved at least
60 pixels by this time, then a button press/release will not be processed, but this will be
processed as a gesture. At 0.15 second, the button press is processed and once the user
releases, the release is processed and no gesture
recognition is attempted. To be clear, it is not necessary for the user to move off of a button
to be considered a gesture, but to move at least 60 pixels in that first 0.15 of a second.
operations on the button or slider.
This will be registered as a gesture.
Programming
80
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