Widgets: Improve theme

- move simple styles classes ton their own file
- add button hovered texture
- add button hovered/pressed texture
- add label style

include/Nazara/Widgets/SimpleWidgetStyles.hpp

@@ -0,0 +1,84 @@
+// Copyright (C) 2021 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_SIMPLEWIDGETSTYLES_HPP
+#define NAZARA_WIDGETS_SIMPLEWIDGETSTYLES_HPP
+
+#include <Nazara/Graphics/SlicedSprite.hpp>
+#include <Nazara/Graphics/TextSprite.hpp>
+#include <Nazara/Widgets/WidgetTheme.hpp>
+#include <entt/entt.hpp>
+
+namespace Nz
+{
+	class NAZARA_WIDGETS_API SimpleButtonWidgetStyle : public ButtonWidgetStyle
+	{
+		public:
+			SimpleButtonWidgetStyle(ButtonWidget* buttonWidget, std::shared_ptr<Material> material, std::shared_ptr<Material> hoveredMaterial = {}, std::shared_ptr<Material> pressedMaterial = {}, std::shared_ptr<Material> pressedHoveredMaterial = {});
+			SimpleButtonWidgetStyle(const SimpleButtonWidgetStyle&) = delete;
+			SimpleButtonWidgetStyle(SimpleButtonWidgetStyle&&) = default;
+			~SimpleButtonWidgetStyle() = default;
+
+			void Layout(const Vector2f& size) override;
+
+			void OnHoverBegin() override;
+			void OnHoverEnd() override;
+			void OnPress() override;
+			void OnRelease() override;
+
+			void UpdateText(const AbstractTextDrawer& drawer) override;
+
+			SimpleButtonWidgetStyle& operator=(const SimpleButtonWidgetStyle&) = delete;
+			SimpleButtonWidgetStyle& operator=(SimpleButtonWidgetStyle&&) = default;
+
+		protected:
+			virtual void UpdateMaterial(bool hovered, bool pressed);
+
+		private:
+			std::shared_ptr<Material> m_hoveredMaterial;
+			std::shared_ptr<Material> m_material;
+			std::shared_ptr<Material> m_pressedMaterial;
+			std::shared_ptr<Material> m_pressedHoveredMaterial;
+			std::shared_ptr<SlicedSprite> m_sprite;
+			std::shared_ptr<TextSprite> m_textSprite;
+			entt::entity m_spriteEntity;
+			entt::entity m_textEntity;
+			bool m_isHovered;
+			bool m_isPressed;
+	};
+
+	class NAZARA_WIDGETS_API SimpleLabelWidgetStyle : public LabelWidgetStyle
+	{
+		public:
+			SimpleLabelWidgetStyle(LabelWidget* labelWidget, std::shared_ptr<Material> material, std::shared_ptr<Material> hoveredMaterial = {});
+			SimpleLabelWidgetStyle(const SimpleLabelWidgetStyle&) = delete;
+			SimpleLabelWidgetStyle(SimpleLabelWidgetStyle&&) = default;
+			~SimpleLabelWidgetStyle() = default;
+
+			void Layout(const Vector2f& size) override;
+
+			void OnHoverBegin() override;
+			void OnHoverEnd() override;
+
+			void UpdateText(const AbstractTextDrawer& drawer) override;
+
+			SimpleLabelWidgetStyle& operator=(const SimpleLabelWidgetStyle&) = delete;
+			SimpleLabelWidgetStyle& operator=(SimpleLabelWidgetStyle&&) = default;
+
+		protected:
+			virtual void UpdateMaterial(bool hovered);
+
+		private:
+			std::shared_ptr<Material> m_hoveredMaterial;
+			std::shared_ptr<Material> m_material;
+			std::shared_ptr<TextSprite> m_textSprite;
+			entt::entity m_entity;
+	};
+}
+
+#include <Nazara/Widgets/DefaultWidgetTheme.inl>
+
+#endif // NAZARA_WIDGETS_SIMPLEWIDGETSTYLES_HPP