How to get the Scrollbar position and value?

Ignition
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1

Hi all, i hope everyone is well. I have doubts about the vision power table. I need to take the position of the vertical scrollbar position. Now, I can take the vertical scrollbar's position while scrolling with my mouse. But I need to take the position while clicking and dragging that scroll bar in the table. Is there any way to get that Bar's position values?

FYR:

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image964×517 28.7 KB

Need to take that highlighted bar's value.

Thanks,
Muniyandi D

2

Explain what the real problem you are trying to solve is.
Why do you need to know its position?

3

Here, I am trying to freeze the columns in that power table component. So, previously, I found one topic, like using multiple tables to do that. So, I implemented that as how they instruct there. Here is the topic: Ignition - Table Component: Scroll Bar Hide & Selected Row. They are scrolling the table using the mouse scroll. When the mouse is scrolling the first table, the second table has automatically scrolled. It will only happen when the mouse is scrolling. Whenever we hold the scroll bar and drag it up/down, the first table only scrolls. The second one was idle at that time. That's why now I could try to take the position of value of the scroll bar. This is the reason of why I need to know that position.

Thanks,
Muniyandi D

4

Right, so your question is really, "How can I synchronize scrolling between two Power Table components?". It might be better to edit your original question as there may be a better way than your approach. (I don't know, but the thread you linked to seems to offer several ideas.)

5

I used the posts 5 and 6th from mentioned topic in the previous topic to did that.

6

Or any way to get the Scroll bar position value while clicking and dragging that scroll bar?

Thanks,
Muniyandi D

7

Use the initialize extension function to add a change listener to the power table's viewport.

Example:

#def initialize(self):
	'''
	Note: This will not run in the designer
	 ...UNLESS preview mode is already running prior to the window being opened
	'''
	# Create a change listener that reports the current view position
	from javax.swing.event import ChangeListener
	class ScrollListener(ChangeListener):
		def stateChanged(self, event):
			viewPosition = event.source.viewPosition
			
			# Do sometihing with the view position information here
			print viewPosition
	
	# To bypass the clunky practice of closing and reopening the window
	# ...each time to test the latest version of the listener,
	# ...use a test button or an easily togglable propertyChange event,
	# ...and simply locate and remove the previous listener prior to adding the newest version
	for listener in self.viewport.changeListeners:
		if listener.__class__.__name__ == 'ScrollListener':
			self.viewport.removeChangeListener(listener)
	
	# Add the change listener to the power table's viewport
	self.viewport.addChangeListener(ScrollListener())

Note: The initialize extension function won't run in the designer unless preview mode is already on prior to opening the window.

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