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include/engine/core/raster_font.h

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+/* -----------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+----------------------------------------------------------------------------- */
+
+
+#ifndef	__NRASTERFONT__
+#define	__NRASTERFONT__
+
+
+		#include "core/render_data.h"
+		#include "container/nlist.h"
+
+
+namespace GS {
+	namespace Render {
+		struct ResourceFactory;
+
+/*!
+	@short	Raster font.
+
+	Raster font that can be used by the Write() method of the renderer.
+	A raster font is of fixed size and stored in one or several texture
+	pages.
+
+	@author	Emmanuel Julien (ejulien@gsworks.fr)
+*/
+class	RasterFont
+{
+public:
+
+/// Raster font glyph.
+struct	Glyph
+{
+		bool		available;
+		float		u, v;
+		float		w, h;
+		float		offx, offy;
+		float		step;
+		uint		page;
+
+		void		Reset()
+		{
+			available = false;
+			u = v = 0;
+			w = h = 0;
+			offx = offy = 0;
+			step = 0;
+			page = 0;
+		}
+		Glyph() { Reset(); }
+};
+
+private:
+
+		SharedList <Texture *> pages;
+
+		Glyph			glyph[256];			///< Character LUT.
+
+		float			baseline;
+		float			height;
+
+public:
+
+		String			name;
+
+		float			GetHeight(bool normalized = true) const;
+		float			GetBaseline(bool normalized = true) const;
+
+		/// Return the texture corresponding to a given font page.
+		Texture			*GetPage(uint) const;
+
+		/// Return information structure for a given glyph.
+		const Glyph		*GetGlyphInfos(uchar) const;
+
+		// Return the rect of a single-line string (stops at the first carriage return).
+		Vector2			ComputeLineRect(const char *s, bool normalized = true) const;
+		/// Return the rect a multi-line string.
+		Vector2			ComputeStringRect(const char *s, bool normalized = true) const;
+
+		/*!
+			@short	Load a raster font.
+			@param	nml		The font meta file description.
+			@param	base	Font page texture base name.
+		*/
+		bool			Load(ResourceFactory &, const char *nml, const char *base);
+		void			Unload();
+};
+
+	} // Render
+} // GS
+
+
+#endif	// __NRASTERFONT__