NEW:add step mesh parameters

jira: STUDIO-7415
Change-Id: I5e09a1eb1ad31063ad56d08d5738907a804dc112
(cherry picked from commit ccbe9630076b754ab440e98977c4164afff96250)
(cherry picked from commit 84e7063c54a99e8a1440e74f831c6d1f6828f3f8)

src/slic3r/GUI/StepMeshDialog.hpp

@@ -0,0 +1,42 @@
+#ifndef _STEP_MESH_DIALOG_H_
+#define _STEP_MESH_DIALOG_H_
+
+#include "GUI_Utils.hpp"
+#include <boost/filesystem.hpp>
+#include <wx/sizer.h>
+class Button;
+namespace fs = boost::filesystem;
+class StepMeshDialog : public Slic3r::GUI::DPIDialog
+{
+public:
+    StepMeshDialog(wxWindow* parent, fs::path file);
+    void on_dpi_changed(const wxRect& suggested_rect) override;
+    inline double get_linear_defletion() {
+        double value;
+        if (m_linear_last.ToDouble(&value)) {
+            return value;
+        }else {
+            return 0.003;
+        }
+    }
+    inline double get_angle_defletion() {
+        double value;
+        if (m_angle_last.ToDouble(&value)) {
+            return value;
+        } else {
+            return 0.5;
+        }
+    }
+    long get_mesh_number();
+private:
+    fs::path m_file;
+    Button* m_button_ok = nullptr;
+    Button* m_button_cancel = nullptr;
+    wxString m_linear_last = wxString::Format("%.3f", 0.003);
+    wxString m_angle_last = wxString::Format("%.2f", 0.5);
+    wxStaticText* mesh_face_number_text;
+    bool validate_number_range(const wxString& value, double min, double max);
+    void update_mesh_number_text();
+};
+
+#endif  // _STEP_MESH_DIALOG_H_