[Octave-bug-tracker] [bug #53836] Clicking a QDockWidget tab in a stack does not activate the associated widget

[Dan Sebald]

URL:
  <http://savannah.gnu.org/bugs/?53836>

                 Summary: Clicking a QDockWidget tab in a stack does not
activate the associated widget
                 Project: GNU Octave
            Submitted by: sebald
            Submitted on: Fri 04 May 2018 06:08:38 PM UTC
                Category: GUI
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

A very minor detail, but if there is a tab stack in the main GUI or in the
variable editor mouse button press on the tab of the visible panel in the
stack does not bring that item into focus.  Attached are a couple screen shots
which show that nothing happens when I pressed the mouse button right where
the mouse cursor is shown.  That is, I tried to activate the Command Window by
clicking the visible tab...nothing happened; focus did not transfer to the
Command Window.  Of course, had I moved the cursor up and clicked in the
actual Command Window, then focus would change.  Note that if the item in the
tab stack is not the visible one then clicking on that tab brings the item to
the front of the stack (i.e., visible) *and* gives it focus.

I'm attaching a second screenshot that illustrates the same thing happens with
the Variable Editor.

Either something related to main_window::focus_changed (QWidget *, QWidget
*new_widget) has to be changed, but I doubt that can be done because that slot
is connected directly to the qApp signal that indicates somewhere focus has
changed.

Instead, it looks like something in the label_dock_widget, which is a base
class of both octave_dock_widget and variable_dock_widget, has to be changed. 
Either it could be something having to do with focus proxy, or perhaps one
will have to write a short mouse-press event handler for the tab buttons and
change focus even when the top stack tab is pressed.



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File Attachments:


-------------------------------------------------------
Date: Fri 04 May 2018 06:08:38 PM UTC  Name:
gui_main_tab_not_activate_Screenshot_20180504_125238.png  Size: 205KiB   By:
sebald

<http://savannah.gnu.org/bugs/download.php?file_id=44093>
-------------------------------------------------------
Date: Fri 04 May 2018 06:08:38 PM UTC  Name:
variable_editor_tab_not_activate_Screenshot_20180504_125351.png  Size: 128KiB 
 By: sebald

<http://savannah.gnu.org/bugs/download.php?file_id=44094>

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