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(libN2L-4)


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LibN2L-4 Library Code Reference

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fonts

cTextureFont.h

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00001 /************************************************************************
00002 Nova-2 Library (libN2L, or simply n2l) Game development C++ Library
00003 Copyright (C) 2003  Aaron Cameron
00004 
00005 This library is free software; you can redistribute it and/or
00006 modify it under the terms of the GNU Lesser General Public
00007 License as published by the Free Software Foundation; either
00008 version 2.1 of the License, or (at your option) any later version.
00009 
00010 This library is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 Lesser General Public License for more details.
00014 
00015 You should have received a copy of the GNU Lesser General Public
00016 License along with this library; if not, write to the Free Software
00017 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00018 
00019 A copy of the GNU Lesser General Public License has been provided with
00020 this library in the file 'COPYING'.
00021 
00022 Contact information for the author of this library has been provided
00023 with this library in the file 'AUTHOR'.
00024 ************************************************************************/
00025 #ifndef _n2l4_cTextureFont_h
00026 #define _n2l4_cTextureFont_h
00027 
00028 #include "n2l/n2l.h"
00029 #include "n2l/geometry.h"
00030 
00031 #include "types.h"
00032 #include "cFontInterface.h"
00033 #include "cTTFSurfaceFactory.h"
00034 
00035 #include <map>
00036 
00037 /******************************************************************************/
00038 namespace n2l {
00039 
00040     class cGLTexture;
00041     class cSurfaceInterface;
00042 
00043     /**************************************************************************/
00047     class cTextureFont : public cFontInterface
00048     {
00049     private:
00055         template <typename TNum>
00056         class cCoordSetBase
00057         {
00058         public:
00059             cCoordSetBase() {}
00060             cCoordSetBase( const TNum iX, const TNum iY, const TNum iA,
00061                 const TNum iB ) :
00062                 mX(iX), mY(iY), mA(iA), mB(iB) {}
00063             const TNum x() const { return mX; }
00064             const TNum y() const { return mY; }
00065             const TNum x2() const { return mA; }
00066             const TNum y2() const { return mB; }
00067             const TNum w() const { return mA-mX; }
00068             const TNum h() const { return mB-mY; }
00069         private:
00070             TNum mX,mY,mA,mB;
00071         };
00072 
00073     public:
00074         typedef cCoordSetBase<tUint> tCoordSet;
00075         typedef std::map<tGlyphID,tCoordSet> tCoordMap;
00076     
00077         static const tUint  MaxGlyphs;
00078         static const tUbyte UndefinedGlyphID;
00079 
00080         cTextureFont( const cVfsNodeInterface &iFile,
00081             const tUint iPtSize = 24 );
00082 
00083         cTextureFont( const cSurfaceInterface &iSurface,
00084             const tCoordMap &iMap );
00085 
00086         cTextureFont( const cTTFSurfaceFactory &iFactory );
00087 
00088         virtual ~cTextureFont();
00089 
00090         void buildGlyphs( const cSurfaceInterface &iSurface,
00091             const tCoordMap &iMap );
00092 
00093         void buildGlyphs( const cTTFSurfaceFactory &iFactory );
00094 
00095         virtual void draw( const tString &iText ) const;
00096         virtual void draw( const tVector2f &iPos, const tString &iText,
00097             const tFloat &iGlyphHeight = 1.0f,
00098             const tString::size_type iStartPos = 0,
00099             const tString::size_type iLength = tString::npos ) const;
00100 
00101         virtual void drawGlyph( const tGlyphID iGlyphID ) const;
00102 
00103         virtual const tVector2f calcSize( const tString &iText,
00104             const tFloat &iGlyphHeight = 1.0f,
00105             const tString::size_type iStartPos = 0,
00106             const tString::size_type iLength = tString::npos ) const;
00107 
00108         virtual const tFloat glyphWidth( const tGlyphID iGlyphID,
00109             const tFloat &iGlyphHeight = 1.0f ) const;
00110 
00111         virtual const tFloat glyphSeperation(
00112             const tFloat &iGlyphHeight = 1.0f ) const;
00113 
00114         virtual const tFloat glyphRowSeperation(
00115             const tFloat &iGlyphHeight = 1.0f ) const;
00116 
00117     private:
00118         typedef cCoordSetBase<tFloat> tTexCoords;
00119 
00120         static const tGlyphID MinGenGlyphID;
00121         static const tGlyphID MaxGenGlyphID;
00122 
00123         static const tUint PreferredMaxGenTexXSize;
00124         static const tUint PreferredMaxGenTexYSize;
00125         
00126         static const tUint MaxGenTexXSize;
00127         static const tUint MaxGenTexYSize;
00128 
00135         static const tUint GlyphPadding;
00136 
00137         cAutoPtr<const cGLTexture> mGlyphs;
00138         tTexCoords *mTexCoords;
00139         tFloat *mGlyphWidths;
00140         tFloat mGlyphSeperation;
00141         tFloat mGlyphRowSeperation;
00142     
00143         cTextureFont();
00144 
00145         const tBool willFitIn( const cTTFSurfaceFactory &iFactory,
00146             const tUint iMaxX, const tUint iMaxY, tUint &oActualXSize,
00147             tUint &oActualYSize ) const;
00148 
00149     }; // class
00150 
00151 }
00152 
00153 #endif
©2012 Aaron Cameron