From a3a3417c53dd2d0c6ade184fb69a44e10ef2eace Mon Sep 17 00:00:00 2001
From: alves <liulikeqian@gmail.com>
Date: Thu, 5 Mar 2026 17:37:33 +0800
Subject: [PATCH] fix linux flatpak process app crash bug.

---
 src/slic3r/GUI/MainFrame.cpp        |  6 ++++++
 src/slic3r/GUI/Widgets/DropDown.cpp | 13 +++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index e0350ba246..2926d2dca5 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -270,6 +270,12 @@ DPIFrame(NULL, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, BORDERLESS_FRAME_
     // Load the icon either from the exe, or from the ico file.
     SetIcon(main_frame_icon(wxGetApp().get_app_mode()));
 
+#ifdef __WXGTK__
+    // GTK/X11: set minimum size before any layout so gtk_widget_set_size_request and
+    // gtk_window_resize never see 0 or negative dimensions (avoids assertion failures).
+    SetMinSize(wxGetApp().get_min_size());
+#endif
+
     // initialize tabpanel and menubar
     init_tabpanel();
     if (wxGetApp().is_gcode_viewer())
diff --git a/src/slic3r/GUI/Widgets/DropDown.cpp b/src/slic3r/GUI/Widgets/DropDown.cpp
index ab48a27d2d..380d23bff4 100644
--- a/src/slic3r/GUI/Widgets/DropDown.cpp
+++ b/src/slic3r/GUI/Widgets/DropDown.cpp
@@ -365,6 +365,11 @@ void DropDown::messureSize()
     }
     szContent.y *= std::min((size_t)15, texts.size());
     szContent.y += texts.size() > 15 ? rowSize.y / 2 : 0;
+#ifdef __WXGTK__
+    // GTK requires width >= -1 and height > 0 for gtk_window_resize/set_size_request
+    if (szContent.x < 1) szContent.x = 1;
+    if (szContent.y < 1) szContent.y = 1;
+#endif
     wxWindow::SetSize(szContent);
 #ifdef __WXGTK__
     // Gtk has a wrapper window for popup widget
@@ -384,6 +389,10 @@ void DropDown::autoPosition()
         size = rowSize;
         size.y *= std::min((size_t)15, texts.size());
         size.y += texts.size() > 15 ? rowSize.y / 2 : 0;
+#ifdef __WXGTK__
+        if (size.x < 1) size.x = 1;
+        if (size.y < 1) size.y = 1;
+#endif
         if (size != GetSize()) {
             wxWindow::SetSize(size);
             offset = wxPoint();
@@ -396,6 +405,10 @@ void DropDown::autoPosition()
         if (GetPosition().y + size.y + 10 > drect.GetBottom()) {
             if (use_content_width && texts.size() <= 15) size.x += 6;
             size.y = drect.GetBottom() - GetPosition().y - 10;
+#ifdef __WXGTK__
+            if (size.y < 1) size.y = 1;
+            if (size.x < 1) size.x = 1;
+#endif
             wxWindow::SetSize(size);
             if (selection >= 0) {
                 if (offset.y + rowSize.y * (selection + 1) > size.y)