Added TextDrawer classes

Former-commit-id: 4c5ace385f1a9b9ceebb774022bbc001b69a3bb4

include/Nazara/Utility/AbstractTextDrawer.hpp

@@ -0,0 +1,42 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_ABSTRACTTEXTDRAWER_HPP
+#define NAZARA_ABSTRACTTEXTDRAWER_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/Core/Color.hpp>
+#include <Nazara/Math/Rect.hpp>
+#include <Nazara/Math/Vector2.hpp>
+
+class NzAbstractImage;
+class NzFont;
+
+class NAZARA_API NzAbstractTextDrawer
+{
+	public:
+		struct Glyph;
+
+		NzAbstractTextDrawer() = default;
+		virtual ~NzAbstractTextDrawer();
+
+		virtual const NzRectui& GetBounds() const = 0;
+		virtual NzFont* GetFont(unsigned int index) const = 0;
+		virtual unsigned int GetFontCount() const = 0;
+		virtual const Glyph& GetGlyph(unsigned int index) const = 0;
+		virtual unsigned int GetGlyphCount() const = 0;
+
+		struct Glyph
+		{
+			NzColor color;
+			NzRectui atlasRect;
+			NzVector2f corners[4];
+			NzAbstractImage* atlas;
+			bool flipped;
+		};
+};
+
+#endif // NAZARA_ABSTRACTTEXTDRAWER_HPP

include/Nazara/Utility/SimpleTextDrawer.hpp

@@ -0,0 +1,59 @@
+// Copyright (C) 2015 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_SIMPLETEXTDRAWER_HPP
+#define NAZARA_SIMPLETEXTDRAWER_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/Core/ResourceListener.hpp>
+#include <Nazara/Core/String.hpp>
+#include <Nazara/Utility/AbstractTextDrawer.hpp>
+#include <Nazara/Utility/Enums.hpp>
+#include <Nazara/Utility/Font.hpp>
+#include <vector>
+
+class NAZARA_API NzSimpleTextDrawer : public NzAbstractTextDrawer, NzResourceListener
+{
+	public:
+		NzSimpleTextDrawer();
+		virtual ~NzSimpleTextDrawer();
+
+		const NzRectui& GetBounds() const;
+		unsigned int GetCharacterSize() const;
+		const NzColor& GetColor() const;
+		NzFont* GetFont() const;
+		nzUInt32 GetStyle() const;
+
+		void SetCharacterSize(unsigned int characterSize);
+		void SetColor(const NzColor& color);
+		void SetFont(NzFont* font);
+		void SetStyle(nzUInt32 style);
+		void SetText(const NzString& str);
+
+		static NzSimpleTextDrawer Draw(unsigned int characterSize, const NzString& str, nzUInt32 style = nzTextStyle_Regular, const NzColor& color = NzColor::White);
+		static NzSimpleTextDrawer Draw(NzFont* font, unsigned int characterSize, const NzString& str, nzUInt32 style = nzTextStyle_Regular, const NzColor& color = NzColor::White);
+
+	private:
+		NzFont* GetFont(unsigned int index) const override;
+		unsigned int GetFontCount() const override;
+		const Glyph& GetGlyph(unsigned int index) const override;
+		unsigned int GetGlyphCount() const override;
+
+		bool OnResourceModified(const NzResource* resource, int index, unsigned int code) override;
+		void OnResourceReleased(const NzResource* resource, int index) override;
+		void UpdateGlyphs() const;
+
+		mutable std::vector<Glyph> m_glyphs;
+		NzColor m_color;
+		NzFontRef m_font;
+		mutable NzRectui m_bounds;
+		NzString m_text;
+		nzUInt32 m_style;
+		mutable bool m_glyphUpdated;
+		unsigned int m_characterSize;
+};
+
+#endif // NAZARA_SIMPLETEXTDRAWER_HPP