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include/Nazara/Widgets/ScrollAreaWidget.hpp

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+// Copyright (C) 2022 Jérôme "Lynix" Leclercq (lynix680@gmail.com)
+// This file is part of the "Nazara Engine - Widgets module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_WIDGETS_SCROLLAREAWIDGET_HPP
+#define NAZARA_WIDGETS_SCROLLAREAWIDGET_HPP
+
+#include <Nazara/Graphics/TextSprite.hpp>
+#include <Nazara/Widgets/BaseWidget.hpp>
+#include <Nazara/Widgets/WidgetTheme.hpp>
+
+namespace Nz
+{
+	class NAZARA_WIDGETS_API ScrollAreaWidget : public BaseWidget
+	{
+		public:
+			ScrollAreaWidget(BaseWidget* parent, BaseWidget* content);
+			ScrollAreaWidget(const ScrollAreaWidget&) = delete;
+			ScrollAreaWidget(ScrollAreaWidget&&) = default;
+			~ScrollAreaWidget() = default;
+
+			void EnableScrollbar(bool enable);
+
+			inline float GetScrollHeight() const;
+			inline float GetScrollRatio() const;
+
+			inline bool HasScrollbar() const;
+			inline bool IsScrollbarEnabled() const;
+			inline bool IsScrollbarVisible() const;
+
+			inline void ScrollToHeight(float height);
+			void ScrollToRatio(float ratio);
+
+			ScrollAreaWidget& operator=(const ScrollAreaWidget&) = delete;
+			ScrollAreaWidget& operator=(ScrollAreaWidget&&) = default;
+
+		private:
+			Nz::Rectf GetScrollbarRect() const;
+
+			void Layout() override;
+
+			void OnMouseButtonPress(int x, int y, Nz::Mouse::Button button) override;
+			void OnMouseButtonRelease(int x, int y, Nz::Mouse::Button button) override;
+			void OnMouseExit() override;
+			void OnMouseMoved(int x, int y, int deltaX, int deltaY) override;
+			void OnMouseWheelMoved(int x, int y, float delta) override;
+
+			std::unique_ptr<ScrollAreaWidgetStyle> m_style;
+			BaseWidget* m_content;
+			EntityHandle m_scrollbarBackgroundEntity;
+			EntityHandle m_scrollbarEntity;
+			Nz::SpriteRef m_scrollbarBackgroundSprite;
+			Nz::SpriteRef m_scrollbarSprite;
+			Nz::Vector2i m_grabbedDelta;
+			bool m_isGrabbed;
+			bool m_isScrollbarEnabled;
+			bool m_hasScrollbar;
+			float m_scrollRatio;
+	};
+}
+
+#include <Nazara/Widgets/ScrollAreaWidget.inl>
+
+#endif // NAZARA_WIDGETS_SCROLLAREAWIDGET_HPP