update doc. add a bug about full screen mode app

* COMMENT -*- mode: org -*-

#+Date: 2019-09-02

Time-stamp: <2020-06-03>

Time-stamp: <2022-08-29>

#+STARTUP: content

* notes                                                               :entry:

** 2020-06-03 how to make a release?

  G_MESSAGES_DEBUG=all ./zero-panel

* later                                                               :entry:

** 2022-08-29 config zero-panel to always shown on-top in full screen mode window.

- when emacs run in full screen mode. (press f11 on my laptop) zero-panel

  can't show on top of emacs window.

  I already have

  gtk_window_set_keep_above(GTK_WINDOW(appdata->window), TRUE);

  search: window can't show on top in emacs toggle-frame-fullscreen

  Gtk.Window.set_keep_above

  https://docs.gtk.org/gtk3/method.Window.set_keep_above.html

  try call it once after user toggle full screen in emacs.

  nope. it didn't work.

- search: show window on top of emacs fullscreen mode

  xfce - How to make new window get the focus when Emacs in full-screen mode in Xfce4? - Unix & Linux Stack Exchange

  https://unix.stackexchange.com/questions/362427/how-to-make-new-window-get-the-focus-when-emacs-in-full-screen-mode-in-xfce4

  search: gtk bring a window on top

  How to pop up a GTK window/widget on top of a full screen application of a different process in Linux? - Stack Overflow

  https://stackoverflow.com/questions/50626271/how-to-pop-up-a-gtk-window-widget-on-top-of-a-full-screen-application-of-a-diffe

  You'll have to integrate B into the window manager somehow, and not make it

  as a standalone application.

  search: gtk how to mark a window not a standalone application?

  gtk_window_set_type_hint(GTK_WINDOW(appdata->window), GDK_WINDOW_TYPE_HINT_DIALOG);

  all type hints

  https://docs.gtk.org/gdk3/enum.WindowTypeHint.html

  GDK_WINDOW_TYPE_HINT_DOCK

  add pager and taskbar skip hints.

  // how did my app not shown in taskbar? I didn't put any type hint.

  // type hint is specified in themes/*.ui file.

  // I also have

    <property name="skip-taskbar-hint">True</property>

    <property name="skip-pager-hint">True</property>

  xprop

  _NET_WM_WINDOW_TYPE(ATOM) = _NET_WM_WINDOW_TYPE_TOOLTIP

  tried other type hint. none works.

  GDK_WINDOW_TYPE_HINT_POPUP_MENU

  GDK_WINDOW_TYPE_HINT_NOTIFICATION

  GDK_WINDOW_TYPE_HINT_DOCK

- it's not emacs specific. the window also doesn't show up when firefox is in

  full screen mode.

  how does ibus/fcitx solve it?

  check fcitx source code.

  fcitx/src/ui at master · fcitx/fcitx · GitHub

  https://github.com/fcitx/fcitx/tree/master/src/ui

  classic

  kimpanel

  // I remember kimpanel. it's a KDE component.

  src/ui/classic/InputWindow.h

  src/ui/classic/InputWindow.c

  This is the Preedit Window for Input

  #+BEGIN_SRC c

    void InputWindowShow(InputWindow* inputWindow)

    {

	if (!WindowIsVisable(inputWindow->parent.owner->dpy, inputWindow->parent.wId))

	    InputWindowMoveWindow(&inputWindow->parent);

	XMapRaised(inputWindow->parent.owner->dpy, inputWindow->parent.wId);

	FcitxXlibWindowPaint(&inputWindow->parent);

    }

  #+END_SRC

  where is XMapRaised defined?

  https://www.systutorials.com/docs/linux/man/3-XMapRaised/

  man XMapRaised(3)

  Xlib - C Language X Interface

  int XMapRaised(Display *display, Window w);

  how to call this in gtk?

  search: how to call XMapRaised in gtk?

  gtk_window_present ()

  gtk_window_present_with_time ()

  try this. I think it should send a map request.

  /* I can't get panel to show in firefox/emacs full screen mode */

  /* gtk_window_present_with_time(GTK_WINDOW(appdata->window), GDK_CURRENT_TIME); */

- I can't find this.

  maybe fix this when porting to wayland server.

- problems

  - how to get timestamp for gtk_window_present_with_time() call?

    its type is guint32.

    https://code.woboq.org/gtk/gtk/gtk/gtkwindow.c.html

    just use GDK_CURRENT_TIME.

    it's not working.

** 2019-09-03 bug: panel window should not get focus in GNOME 3 on Wayland.

currently panel keeps flashing when typing in this env.