Added filtering of key auto repeat for SHIFT and CTRL keys in GLCanvas3D

src/slic3r/GUI/GLCanvas3D.hpp

@@ -132,6 +132,15 @@ private:
     wxTimer* m_timer;
 };
 
+class KeyAutoRepeatFilter
+{
+    size_t m_count{ 0 };
+
+public:
+    void increase_count() { ++m_count; }
+    void reset_count() { m_count = 0; }
+    bool is_first() const { return m_count == 0; }
+};
 
 wxDECLARE_EVENT(EVT_GLCANVAS_OBJECT_SELECT, SimpleEvent);
 
@@ -545,6 +554,9 @@ private:
     bool m_show_picking_texture;
 #endif // ENABLE_RENDER_PICKING_PASS
 
+    KeyAutoRepeatFilter m_shift_kar_filter;
+    KeyAutoRepeatFilter m_ctrl_kar_filter;
+
     RenderStats m_render_stats;
 
     int m_imgui_undo_redo_hovered_pos{ -1 };