[Tcllib-bugs] [Tklib] (ralfixx) tkt (New): tooltip on megawidgets

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Ticket Change [2e5f4a893ea5cb3e39499960ae91582f6b21575611ebe3190f920cd6bcf17175]
  [tooltip on megawidgets]
  By      ralfixx
  For     Tklib
  On      2025-07-30T16:53:38.394
  Details https://core.tcl-lang.org/tklib/tinfo?name=2e5f4a893ea5cb3e39499960ae91582f6b21575611ebe3190f920cd6bcf17175
  Ticket  https://core.tcl-lang.org/tklib/tktview/9924aee88145dde4d5147b2e9d87b048201c34b4

Changed Fields
  assignee:        nobody
  closer:          nobody
  comment:         [https://core.tcl-lang.org/tk/tktview/47d4f291598222849fc0121e7ffbdee5
                   3766ce77]  deliberately changed the behaviour of Enter/Leave events of
                   widgets in a  parent/child relationship: now when entering a child,
                   the parent gets a  leave event.

                   This however kills tooltips on the parent, which previously (up to tk
                   8.6.12) worked on both, parent *and* child.

                   This has an impact on megawidgets which have a
                   parent-child-relationship: previously (before tcl 8.6.13) a tooltip
                   worked on all parts of the megawidget, now (tcl 8.6.13 and later) the
                   situation is more complex:

                   <pre>  wm geometry . 200x100  # a "mega-widget" with borders  pack
                   [frame .f -bg green1] -side top  pack [frame .f.f1 -bg red -width 20
                   -height 20] -side left -padx 10 -pady 10  pack [label .f.lbl -bg white
                   -text label-1] -side right

                   # a "mega-widget" without borders (no padding)  pack [frame .f2 -bg
                   green1] -side bottom  pack [frame .f2.f1 -bg red -width 20] -side left
                   -fill both  pack [label .f2.lbl -bg white -text label-2] -side right
                   -fill both -expand yes

                   package require tooltip  tooltip::tooltip .f "This is .f"
                   tooltip::tooltip .f2 "This is .f2"  </pre>

                   In the upper "mega-widget", the tooltip comes and goes as the mouse
                   enters the various parts (red box, white label).

                   In the lower "mega-widget", the container itself is not visible, and
                   the tooltip works on all parts of the mega-widget.

                   IMHO the tooltip also needs to work on all parts in the upper
                   "mega-widget".

                   Proposed patch attached (ignore the <Leave> event if the event detail
                   is "NotifyInferior").

                   R'
  foundin:         2.0.1
  is_private:      0
  login:           ralfixx
  priority:        5 Medium
  private_contact: 1d3c95db24e116878d6afed7cf890a89a0effe62
  resolution:      None
  severity:        Important
  status:          Open
  submitter:       ralfixx
  subsystem:       tklib :: tooltip
  title:           tooltip on megawidgets
  type:            Bug

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