From 7a434575acc6cb8121ae790ab94250b331b412f4 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sat, 21 Oct 2023 09:46:20 +0200
Subject:  Fix "Keyboard sometimes stops working after Ctrl/+ or Ctrl/-" (#794)

---
 src/Fl.cxx               |  4 ++++
 src/Fl_Screen_Driver.cxx | 13 +++----------
 2 files changed, 7 insertions(+), 10 deletions(-)

(limited to 'src')

diff --git a/src/Fl.cxx b/src/Fl.cxx
index e204a1cd5..94cfff6e8 100644
--- a/src/Fl.cxx
+++ b/src/Fl.cxx
@@ -943,6 +943,10 @@ Fl_Widget* fl_oldfocus; // kludge for Fl_Group...
 /**
     Sets the widget that will receive FL_KEYBOARD events.
 
+    Use this function inside the \c handle(int) member function of a widget of yours
+    to give focus to the widget, for example when it receives the FL_FOCUS or the FL_PUSH event.
+    Otherwise, use Fl_Widget::take_focus() to give focus to a widget;
+ 
     If you change Fl::focus(), the previous widget and all
     parents (that don't contain the new widget) are sent FL_UNFOCUS
     events.  Changing the focus does \e not send FL_FOCUS to
diff --git a/src/Fl_Screen_Driver.cxx b/src/Fl_Screen_Driver.cxx
index 89d2c0b91..78d598d13 100644
--- a/src/Fl_Screen_Driver.cxx
+++ b/src/Fl_Screen_Driver.cxx
@@ -393,8 +393,7 @@ static void del_transient_window(WinAndTracker *data) {
   Fl::delete_widget(data->win);
   if (data->tracker) {
     if (data->tracker->exists()) {
-      Fl::focus(data->tracker->widget());
-      data->tracker->widget()->handle(FL_FOCUS);
+      data->tracker->widget()->take_focus();
     }
     delete data->tracker;
   }
@@ -439,18 +438,12 @@ void Fl_Screen_Driver::transient_scale_display(float f, int nscreen)
   win->user_data((void*)&transient_scale_display); // prevent this window from being rescaled later
   win->set_output();
   win->set_non_modal();
+  Fl_Window_Driver::driver(win)->screen_num(nscreen);
+  Fl_Window_Driver::driver(win)->force_position(1);
   WinAndTracker *data = new WinAndTracker;
   data->win = win;
   Fl_Widget *widget = Fl::focus();
   data->tracker = (widget ? new Fl_Widget_Tracker(widget) : NULL);
-  if (widget) { // make transient a centered child of focussed window
-    Fl_Window *top = widget->top_window();
-    win->position((top->w() - win->w()) / 2, (top->h() - win->h()) / 2);
-    top->add(win);
-  } else { // center transient on display
-    Fl_Window_Driver::driver(win)->screen_num(nscreen);
-    Fl_Window_Driver::driver(win)->force_position(1);
-  }
   win->show();
   Fl::add_timeout(1, (Fl_Timeout_Handler)del_transient_window, data); // delete after 1 sec
 }
-- 
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