add testblock

StackPanel.cpp

@@ -6,10 +6,8 @@
 
 void draw_background(const PositionalProperties & positionals, const Color & background_color);
 void draw_border(const PositionalProperties positionals, const Color & color, const LineWidth & border_line_width);
-PositionalProperties move_down(const PositionalProperties & i, const PositionalProperties & p);
-PositionalProperties move_right(const PositionalProperties & i, const PositionalProperties & p);
 
-StackPanel::StackPanel(const PositionalProperties & p, const StackPanelStyleProperties & s, const DrawItemCallBackList & i, const MoveToNextItem & m) : positionals(p), style(s), itmes(i), move(m)
+StackPanel::StackPanel(const StackPanelStyleProperties & s, const DrawItemCallBackList & i, const MoveToNextItem & m): style(s), itmes(i), move(m)
 {
 }
 
@@ -17,7 +15,7 @@ StackPanel::~StackPanel()
 {
 }
 
-void StackPanel::draw() const
+PositionalProperties StackPanel::draw(const PositionalProperties & positionals) const
 {
   auto border_line_width = style.border_line_width;
   auto margin = style.margin;
@@ -32,7 +30,7 @@ void StackPanel::draw() const
       positionals.height + 2 * (gap)
     };
     draw_background(outer, style.background_color);
-    return;
+    return outer;
   }    
 
   PositionalProperties inner = { 
@@ -47,10 +45,18 @@ void StackPanel::draw() const
     auto last = callback(inner);
     inner = move(inner, last);
   }
+  
+  auto out_distance = 2 * (gap + padding);
+  PositionalProperties outer = { 
+      positionals.left, 
+      positionals.top,
+      inner.width + out_distance,
+      inner.height + out_distance
+  };
 
   if (border_line_width < 1)
   {
-    return;
+    return outer;
   }
   
   PositionalProperties border_positionals = {
@@ -61,6 +67,7 @@ void StackPanel::draw() const
   };
 
   draw_border(border_positionals, style.border_line_color, border_line_width);
+  return outer;
 }
 
 PositionalProperties StackPanel::move_down(const PositionalProperties & i, const PositionalProperties & p)