Move to more memory safe implementation of widget holding

Widgets/Widget.h

@@ -3,6 +3,7 @@
 
 #include <SDL2/SDL.h>
 #include "../json.hpp"
+#include <memory>
 
 class Widget
 {

Widgets/WidgetRect.cpp

@@ -97,7 +97,7 @@ void WidgetRect::draw()
 	}
 }
 
-Widget* WidgetRect::builder(const nlohmann::json& j)
+std::unique_ptr<Widget> WidgetRect::builder(const nlohmann::json& j)
 {
 	int x = 0;
 	int y = 0;
@@ -115,7 +115,7 @@ Widget* WidgetRect::builder(const nlohmann::json& j)
 	json_extract(j, "stroke", stroke_size);
 	json_extract(j, "color", color);
 
-	return new WidgetRect(x, y, width, height, radius, stroke_size, color);
+	return std::make_unique<WidgetRect>(x, y, width, height, radius, stroke_size, color);
 }
 
 void WidgetRect::draw_circle_corner(int x, int y, int quadrant)

Widgets/WidgetRect.h

@@ -28,7 +28,7 @@ public:
 
 	virtual void draw() override;
 
-	static Widget* builder(const nlohmann::json& j);
+	static std::unique_ptr<Widget> builder(const nlohmann::json& j);
 
 private:
 	// x, y - center of circle

Widgets/WidgetText.cpp

@@ -262,7 +262,7 @@ void WidgetText::draw()
 	SDL_FreeSurface(txt_surface);
 }
 
-Widget* WidgetText::builder(const nlohmann::json& j)
+std::unique_ptr<Widget> WidgetText::builder(const nlohmann::json& j)
 {
 	int x = 0;
 	int y = 0;
@@ -299,7 +299,7 @@ Widget* WidgetText::builder(const nlohmann::json& j)
 		return nullptr;
 	}
 
-	return new WidgetText(x, y, width, height,
+	return std::make_unique<WidgetText>(x, y, width, height,
 		text, fit, should_wrap,
 		halign, valign,
 		halign_via_visible, valign_via_visible,

Widgets/WidgetText.h

@@ -73,7 +73,7 @@ public:
 
 	virtual void draw() override;
 
-	static Widget* builder(const nlohmann::json& j);
+	static std::unique_ptr<Widget> builder(const nlohmann::json& j);
 };
 
 #endif // WIDGET_TEXT_H_