Refactor in a good state

WidgetsNew/public/DockLayoutWidget.hpp

@@ -0,0 +1,94 @@
+#include "Widget.hpp"
+
+namespace tp {
+	class DockLayoutWidget : public Widget {
+	public:
+		enum Side { LEFT, TOP, RIGHT, BOTTOM, NONE  };
+
+	private:
+		struct ResizeHandle {
+			RectF area{ 0, 0, 0, 0 };
+			halnf start{ 0 };
+			halnf end{ 0 };
+			bool active = false;
+			bool hover = false;
+		};
+
+		struct SideWidgetData {
+			Widget* widget = nullptr;
+			bool hidden = false;
+			halnf absoluteSize = 200;
+			alni order = -1;
+
+			Side side = { TOP };
+
+			RectF area = {};
+			RectF headerArea = {};
+			RectF previewHandleArea = {};
+
+			ResizeHandle resizeHandle;
+		};
+
+	public:
+		DockLayoutWidget();
+
+	public:
+		void adjustRect() override {}
+		void adjustChildrenRect() override {}
+
+		void process(const EventHandler& events) override;
+		void draw(Canvas& canvas) override;
+		void drawOverlay(Canvas& canvas) override;
+
+		[[nodiscard]] bool propagateEventsToChildren() const override;
+		[[nodiscard]] bool needsNextFrame() const override;
+
+	public:
+		void setCenterWidget(Widget* widget);
+
+		void dockWidget(Widget* widget, Side side);
+		void undockWidget(Side side);
+		void toggleWidgetVisibility(Side side);
+
+	private:
+		void calculateSideAreas();
+		void calculateResizeHandles();
+		void handleResizeEvents(const EventHandler& events);
+		void updateChildSideWidgets();
+
+		void calculateHeaderAreas();
+
+		bool isSideVisible(Side side);
+		bool sideExists(DockLayoutWidget::Side side);
+		ualni getVisibleSidesSize();
+		void handlePreview(const EventHandler& events);
+
+	private:
+		RectF mPreviewArea = {};
+		Side mPreviewSide = NONE;
+		int resizeType[2] = { 0, 0 };
+
+		SideWidgetData mSideWidgets[4];
+
+	private:
+		bool mResizing = false;
+
+		Widget* mCenterWidget = nullptr;
+		RectF mCenterArea {};
+
+		// Parameters
+		halnf mSideSizePadding = 150.f;
+		halnf mPadding = 4;
+		halnf mHeaderSize = 27;
+		halnf mRounding = 10;
+		Vec2F mPreviewHandleSize = { 50, 50 };
+
+		RGBA mResizeHandleColorHovered = RGBA(0.3, 0.3, 0.3, 1);
+		RGBA mResizeHandleColorActive = RGBA(0.6, 0.6, 0.6, 1);
+		RGBA mBackgroundColor = RGBA(0, 0, 0, 1);
+		RGBA mPreviewColor = RGBA(0.6, 0.6, 0.6, 1);
+
+	public:
+		bool mPreview = false;
+	};
+}