ScreenHandler.h:

* Added support for rendering to offscreen buffer/texture via print_screen_buffer().

ScreenHandler.h

@@ -3,6 +3,7 @@
 #include "Rectangle.h"
 #include "Styles.h"
 #include "RC.h"
+#include "Texture.h"
 #include <Core/StringHelper.h>
 #include <Core/StringBox.h>
 #include <Core/StlUtils.h>
@@ -277,23 +278,44 @@ class ScreenHandler
     }
   }
 
-  void print_screen_buffer(Color bg_color) const
+  void print_screen_buffer(Color bg_color, drawing::Texture* texture = nullptr, const RC& pos = {}) const
   {
-    std::vector<std::tuple<char, Color, Color>> colored_str;
-    colored_str.resize(NR*(NC + 1));
-    int i = 0;
-    for (int r = 0; r < NR; ++r)
+    if (texture != nullptr)
     {
-      for (int c = 0; c < NC; ++c)
+      for (int r = 0; r < NR; ++r)
+      {
+        auto rl = r - pos.r;
+        for (int c = 0; c < NC; ++c)
+        {
+          auto cl = c - pos.c;
+
+          drawing::Textel textel;
+          textel.ch = screen_buffer[r][c];
+          textel.fg_color = fg_color_buffer[r][c];
+          textel.bg_color = bg_color_buffer[r][c];
+
+          texture->set_textel(rl, cl, textel);
+        }
+      }
+    }
+    else
+    {
+      std::vector<std::tuple<char, Color, Color>> colored_str;
+      colored_str.resize(NR*(NC + 1));
+      int i = 0;
+      for (int r = 0; r < NR; ++r)
       {
-        Color bg_col_buf = bg_color_buffer[r][c];
-        if (bg_col_buf == Color::Transparent || bg_col_buf == Color::Transparent2)
-          bg_col_buf = bg_color;
-        colored_str[i++] = { screen_buffer[r][c], fg_color_buffer[r][c], bg_col_buf };
+        for (int c = 0; c < NC; ++c)
+        {
+          Color bg_col_buf = bg_color_buffer[r][c];
+          if (bg_col_buf == Color::Transparent || bg_col_buf == Color::Transparent2)
+            bg_col_buf = bg_color;
+          colored_str[i++] = { screen_buffer[r][c], fg_color_buffer[r][c], bg_col_buf };
+        }
+        colored_str[i++] = { '\n', Color::Default, Color::Default };
       }
-      colored_str[i++] = { '\n', Color::Default, Color::Default };
+      m_text->print_complex(colored_str);
     }
-    m_text->print_complex(colored_str);
   }
 
   void print_screen_buffer_chars() const