Move logic from Layout into DocumentLayout

meson.build

@@ -11,7 +11,7 @@ executable(
     './src/Window.cpp',
     './src/Widget.cpp',
     './src/Button.cpp',
-    './src/Layout.cpp',
+    './src/DocumentLayout.cpp',
     './src/Label.cpp',
     './src/main.cpp',
     dependencies : [cairomm_dep, xlib_dep, pangocairo_dep]

src/DocumentLayout.cpp

@@ -1,12 +1,10 @@
-#include <iostream>
-#include "Layout.hpp"
+#include "DocumentLayout.hpp"
 #include "Point.hpp"
-#include "Box.hpp"
 #include "Widget.hpp"
 
 namespace Raven {
 
-void Layout::run() {
+void DocumentLayout::run() {
     if (!m_target)
         return;
 

src/DocumentLayout.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "Layout.hpp"
+
+namespace Raven {
+
+class DocumentLayout : public Layout {
+private:
+    double m_margin { 0.0 };
+public:
+    DocumentLayout()
+        : Layout() {}
+
+    void run();
+
+    double get_margin() { return m_margin; }
+    void set_margin(double margin) { m_margin = margin; run(); }
+};
+
+}

src/Layout.hpp

@@ -5,19 +5,17 @@
 namespace Raven {
 
 class Layout {
-private:
-    double m_margin { 0.0 };
+protected:
     Widget *m_target { nullptr };
 public:
     Layout() {}
 
-    void run();
-
-    double get_margin() { return m_margin; }
-    void set_margin(double margin) { m_margin = margin; run(); }
+    virtual void run() {};
 
     void bind_to(Widget *target) { m_target = target; }
     Widget *get_target() { return m_target; }
+
+    virtual ~Layout() {}
 };
 
 }

src/main.cpp

@@ -5,9 +5,10 @@
 #include "Box.hpp"
 #include "Label.hpp"
 #include "Layout.hpp"
+#include "src/DocumentLayout.hpp"
 
 int main() {
-    Raven::Layout main_layout {};
+    Raven::DocumentLayout main_layout {};
     Raven::Widget new_row { Raven::ControlWidgetType::NewRow };
     Raven::Window window {};