Fl_Window_Driver::set_popup_window(), Fl_Screen_Driver::screen_boundaries_known()

Fl_Window_Driver::set_popup_window() is to be used to declare a window should be
positioned relatively to a previously mapped other window.  This allows a platform
to process such windows differently from other windows if needed.
Menu and tooltip windows are so declared.

A call to Fl_Window_Driver::set_popup_window() also allows to distinguish a real
menu or tooltip window from a window marked by Fl_Window::set_menu_window()
or by Fl_Window::set_tooltip_window() but that's not a real menu or tooltip.

New member function bool Fl_Screen_Driver::screen_boundaries_known() returns
true by default. A platform where the position of windows inside a screen is hidden
(e.g., Wayland) returns false. This allows FLTK to refrain from trying to make sure
a computed position is inside a screen.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.H b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.H
index 2b9580863..d5a7ed9ad 100644
--- a/src/drivers/Wayland/Fl_Wayland_Screen_Driver.H
+++ b/src/drivers/Wayland/Fl_Wayland_Screen_Driver.H
@@ -2,7 +2,7 @@
 // Definition of the Wayland Screen interface
 // for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 2010-2023 by Bill Spitzak and others.
+// Copyright 2010-2024 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -170,6 +170,7 @@ public:
   int get_key(int k) FL_OVERRIDE;
   void enable_im() FL_OVERRIDE;
   void disable_im() FL_OVERRIDE;
+  bool screen_boundaries_known() FL_OVERRIDE { return false; }
 
   // overridden functions from parent class Fl_Unix_Screen_Driver
   int poll_or_select_with_delay(double time_to_wait) FL_OVERRIDE;