From 50b04b565be5ddf21e2a14f6020655cafd5de0e6 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Tue, 17 Oct 2023 09:37:01 +0200
Subject: Fix Crashes and warnings when Fl_Double_Window is smaller than 1x1
 (#798)

---
 src/Fl_x.cxx                                     | 4 ++++
 src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx | 4 ++++
 2 files changed, 8 insertions(+)

(limited to 'src')

diff --git a/src/Fl_x.cxx b/src/Fl_x.cxx
index 1dffa6e1c..27d4d8b01 100644
--- a/src/Fl_x.cxx
+++ b/src/Fl_x.cxx
@@ -2144,6 +2144,10 @@ void Fl_X11_Window_Driver::resize(int X,int Y,int W,int H) {
   if (is_a_move && resize_from_program) force_position(1);
   else if (!is_a_resize && !is_a_move) return;
   if (is_a_resize) {
+    if (pWindow->as_double_window() && pWindow->parent()) {
+      if (W < 1) W = 1;
+      if (H < 1) H = 1;
+    }
     pWindow->Fl_Group::resize(X,Y,W,H);
     if (shown()) {
 #if FLTK_USE_CAIRO
diff --git a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
index 5644f8ca8..07bb5230d 100644
--- a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
@@ -1820,6 +1820,10 @@ void Fl_Wayland_Window_Driver::resize(int X, int Y, int W, int H) {
   if (is_a_move) force_position(1);
   else if (!is_a_resize && !is_a_move) return;
   if (is_a_resize) {
+    if (pWindow->parent()) {
+      if (W < 1) W = 1;
+      if (H < 1) H = 1;
+    }
     pWindow->Fl_Group::resize(X,Y,W,H);
 //fprintf(stderr, "resize: win=%p to %dx%d\n", pWindow, W, H);
     if (shown()) {pWindow->redraw();}
-- 
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