Reorganize code in widgets

WidgetsNew/public/layouts/BasicLayout.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "Layout.hpp"
+
+namespace tp {
+
+	class BasicLayout : public WidgetLayout {
+	public:
+		explicit BasicLayout(Widget* widget) : WidgetLayout(widget) {}
+
+		void pickRect() override;
+		void clampRect() override;
+		void adjustChildrenRect() override;
+		[[nodiscard]] RectF getAvailableChildArea() const override;
+
+	private:
+		void adjustLayout(bool vertical);
+		static halnf changeChildSize(Widget*, halnf diff, bool vertical);
+
+	private:
+		LayoutPolicy mLayoutPolicy = LayoutPolicy::Vertical;
+		halnf mLayoutGap = 5;
+		halnf mLayoutMargin = 10;
+	};
+}