Application Scaling for MSW:

+ Experiments with toolBars scaling
+ Rescaled warning and printing legends

src/slic3r/GUI/GLCanvas3D.hpp

@@ -353,6 +353,9 @@ private:
         void activate(WarningTexture::Warning warning, bool state, const GLCanvas3D& canvas);
         void render(const GLCanvas3D& canvas) const;
 
+        // function used to get an information for rescaling of the warning
+        void rescale(const GLCanvas3D& canvas);
+
     private:
         static const unsigned char Background_Color[3];
         static const unsigned char Opacity;
@@ -360,6 +363,10 @@ private:
         int m_original_width;
         int m_original_height;
 
+        // information for rescaling of the warning legend
+        std::string     m_msg_text = "";
+        bool            m_is_colored_red{false};
+
         // Information about which warnings are currently active.
         std::vector<Warning> m_warnings;
 
@@ -587,6 +594,8 @@ public:
 
     double get_size_proportional_to_max_bed_size(double factor) const;
 
+    void rescale();
+
 private:
     bool _is_shown_on_screen() const;