Trigger a Skill Code by Selecting/Deselecting an Instance in Schematic

Hi,

For a start - you need to use leRegUserObjectSelectionFilter(<filterFunction>) to allow for all objects and not just shapes. However the filter function is called not only when you select an object by clicking on it but also when you hover the mouse over it.The code below handles this:

(defun osf (fig)
   (let ()
      (when (car (last (geGetSelSet))) == fig && fig->objType == "inst"
         (printf "selected %L\n" fig->cellName)
         ; ...here goes your code....
      )
      t
   )
)

leRegUserObjectSelectionFilter("osf")

So whatever code you want to run when an instance is selected, just put it in the when() statement.

regards
Max

Hi,

For a start - you need to use leRegUserObjectSelectionFilter(<filterFunction>) to allow for all objects and not just shapes. However the filter function is called not only when you select an object by clicking on it but also when you hover the mouse over it.The code below handles this:

(defun osf (fig)
   (let ()
      (when (car (last (geGetSelSet))) == fig && fig->objType == "inst"
         (printf "selected %L\n" fig->cellName)
         ; ...here goes your code....
      )
      t
   )
)

leRegUserObjectSelectionFilter("osf")

So whatever code you want to run when an instance is selected, just put it in the when() statement.

regards
Max

Hi Max,

I tried the following code as per your suggestion:

 procedure(osf(fig)
    (let ()
       (when (car (last (geGetSelSet))) == fig && fig->objType == "inst"
         (printf "selected %L\n" fig->cellName)
       )
       t
     )
  )
leRegUserObjectSelectionFilter("osf")

But when I select any instance in my schematic, then nothing gets printed in the CIW. Could you please let me know what am I doing wrong.

Thanks!

leRegUserObjectSelectionFilter is a layout function (note the 'le' prefix = Layout Editor). I think there is no schematic equivalent.

You could still redefine the selection bindkeys to add this functionality there.

Sorry my mistake - I didnt read your description carefully and because you mentioned a layout function figured that was about layouts.

hmmh...what do you mean with selection bindkey? You select an instance by a single left click which is bound to schSingleSelectPt(). Now that function selects an instance when there is one under your mouse and does nothing while you are in an empty area of the schematic. So you'd have to know whether there is an instance under your mouse - and which one that would be. Is there a way to find this out in terms of a SKILL function?

What you basically need to do is

1) remember the current selection

2) do whatever the mouse action click/drag/etc is doing

3) compare the now modified selection with the one stored at 1)

So, default bindkey for e.g. layout area selection is

hiSetBindKey( "Layout"     "<DrawThru1>"      "leSelBoxOrStretch()" )

To match the 1),2),3) points, you could replace this (and all other selection bindkeys accordingly) with

hiSetBindKey( "Layout"     "<DrawThru1>"      "selectionHook_start() leSelBoxOrStretch() selectionHook_done()" )

and have the two functions for 1) and 3) as (toy example)

procedure( selectionHook_start()
    let( (win)
        win = hiGetCurrentWindow()
        GLB_PRE = geGetSelSet(win)
    )
)
procedure( selectionHook_done(mode)
    let( (win pre cur sList dList)
        win = hiGetCurrentWindow()
        cur = geGetSelSet(win)
        pre = GLB_PRE
        GLB_PRE = nil

        ;; call select_hooks on current - remembered
        ;; call deselect_hooks on remembered - current
        dList = setof(e pre !member(e cur))
        sList = setof(e cur !member(e pre))

        when(dList printf("deselecting %L\n" dList~>objType))
        when(sList printf("selecting %L\n"   sList~>objType))
    );let
)

Could be much more optimized, setof+member is O(n^2), should be replaced with a table; with preknowledge if it is only adding or subtracting from selection (Shift or Ctrl pressed), then there can be either nothing deselected resp. selected, so this half could be omitted, etc.

You could probably also have only one function with all three steps combined and pass the original function name (here leSelBoxOrStretch) as symbol to do 2) internally; so you would get rid of the global variable; but in this special case here leSelBoxOrStretch is a macro, and I did not find out how to evaluate a macro and pass it afterwards as argument or how to evaluate the macro symbol after being passed into the function (as macros are evaluated at compile time).

Anyway, just a toy example...