first commit

include/framework/font/font_extended.h

@@ -0,0 +1,70 @@
+/* -----------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+------------------------------------------------------------------------------*/
+
+
+#ifndef	__FONTEXTENDED__
+#define	__FONTEXTENDED__
+
+
+		#include "font/font_interface.h"
+		#include "memory/nauto_ptr.h"
+		#include "memory/nweak_ptr.h"
+
+
+namespace GS {
+
+/*!
+	@short	Extended font to help normalization.
+	@author	Emmanuel Julien (ejulien@owloh.com)
+*/
+class	FontEx : public IFont
+{
+		sIFont		font;
+		WeakPtr <IFont> current_glyph_font;
+
+		int			pixel_size;
+
+public:
+
+		WeakPtr <IFont> fallback;		///< Fall-back font when a glyph is not found in the current font.
+
+		float		size_multiplier,	///< Offsets to ease TTF normalization.
+					tracking_offset,
+					leading_offset;
+
+		/// Return the font name.
+		const char	*GetName() const { return font->GetName(); }
+		/// Return the bounding rect for a given string.
+		iRect		GetTextBoundRect(const char *text) const { return font->GetTextBoundRect(text); }
+
+		/// Set font size in pixels.
+		bool		SetPixelSize(int);
+		/// Get font height in pixels.
+		int			GetHeight() const;
+		/// Get font current glyph advance.
+		int			GetAdvance() const;
+
+		/// Return true if the font supports kerning.
+		bool		HasKerning() const;
+		/// Return the kerning for a glyph pair.
+		int			GetKerning(uint previous_glyph, uint glyph) const;
+
+		/// Load the glyph corresponding to a UTF-32 codepoint.
+		bool		LoadGlyph(uint codepoint, bool for_render);
+		/// Render currently loaded glyph to a picture.
+		bool		RenderCurrentGlyph(Picture &picture, const iPoint &position, const iRect &clip, const Color &color);
+
+		/// Set a fallback font to query in case a glyph cannot be found in this font.
+		void		SetFallback(IFont *f) { fallback = f; }
+
+		FontEx(IFont *f) : font(f), size_multiplier(1), tracking_offset(1), leading_offset(1) {}
+};
+
+typedef	SharedPtr <FontEx> sFontEx;
+
+} // GS
+
+
+#endif	// __FONTEXTENDED__