mirror of
https://github.com/nillerusr/source-engine.git
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149 lines
3.9 KiB
C++
149 lines
3.9 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef WIN32FONT_H
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#define WIN32FONT_H
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#ifdef _WIN32
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#pragma once
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#endif
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#if !defined( _X360 )
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#define WIN32_LEAN_AND_MEAN
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#define OEMRESOURCE
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#include <windows.h>
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#endif
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#ifdef GetCharABCWidths
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#undef GetCharABCWidths
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#endif
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#include "utlrbtree.h"
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#include "tier1/utlsymbol.h"
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struct newChar_t;
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//-----------------------------------------------------------------------------
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// Purpose: encapsulates a windows font
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//-----------------------------------------------------------------------------
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class CWin32Font
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{
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public:
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CWin32Font();
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~CWin32Font();
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// creates the font from windows. returns false if font does not exist in the OS.
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virtual bool Create(const char *windowsFontName, int tall, int weight, int blur, int scanlines, int flags);
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// writes the char into the specified 32bpp texture
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virtual void GetCharRGBA(wchar_t ch, int rgbaWide, int rgbaTall, unsigned char *rgba);
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// returns true if the font is equivalent to that specified
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virtual bool IsEqualTo(const char *windowsFontName, int tall, int weight, int blur, int scanlines, int flags);
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// returns true only if this font is valid for use
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virtual bool IsValid();
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// gets the abc widths for a character
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virtual void GetCharABCWidths(int ch, int &a, int &b, int &c);
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// set the font to be the one to currently draw with in the gdi
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virtual void SetAsActiveFont(HDC hdc);
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// returns the height of the font, in pixels
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virtual int GetHeight();
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// returns requested height of font.
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virtual int GetHeightRequested();
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// returns the ascent of the font, in pixels (ascent=units above the base line)
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virtual int GetAscent();
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// returns the maximum width of a character, in pixels
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virtual int GetMaxCharWidth();
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// returns the flags used to make this font
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virtual int GetFlags();
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// returns true if this font is underlined
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bool GetUnderlined() { return m_bUnderlined; }
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// gets the name of this font
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const char *GetName() { return m_szName.String(); }
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const char *GetFamilyName() { return NULL; }
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// gets the width of ch given its position around before and after chars
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void GetKernedCharWidth( wchar_t ch, wchar_t chBefore, wchar_t chAfter, float &wide, float &abcA );
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#if defined( _X360 )
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// generates texture data for a set of chars
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virtual void GetCharsRGBA( newChar_t *newChars, int numNewChars, unsigned char *pRGBA );
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virtual void CloseResource();
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#endif
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private:
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#if !defined( _X360 )
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HFONT m_hFont;
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HDC m_hDC;
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HBITMAP m_hDIB;
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#else
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HXUIFONT m_hFont;
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HDC m_hDC;
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#endif
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// pointer to buffer for use when generated bitmap versions of a texture
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unsigned char *m_pBuf;
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protected:
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CUtlSymbol m_szName;
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short m_iTall;
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unsigned short m_iWeight;
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unsigned short m_iFlags;
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unsigned short m_iScanLines;
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unsigned short m_iBlur;
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unsigned short m_rgiBitmapSize[2];
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bool m_bUnderlined;
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unsigned int m_iHeight : 8;
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unsigned int m_iMaxCharWidth : 8;
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unsigned int m_iAscent : 8;
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unsigned int m_iDropShadowOffset : 1;
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unsigned int m_iOutlineSize : 1;
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unsigned int m_bAntiAliased : 1;
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unsigned int m_bRotary : 1;
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unsigned int m_bAdditive : 1; //29
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private:
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// abc widths
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struct abc_t
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{
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short b;
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char a;
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char c;
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};
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#if !defined( _X360 )
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// On PC we cache char widths on demand when actually requested to minimize our use of the kernels
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// paged pool (GDI may cache information about glyphs we have requested and take up lots of paged pool)
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struct abc_cache_t
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{
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wchar_t wch;
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abc_t abc;
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};
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CUtlRBTree<abc_cache_t, unsigned short> m_ExtendedABCWidthsCache;
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static bool ExtendedABCWidthsCacheLessFunc(const abc_cache_t &lhs, const abc_cache_t &rhs);
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#else
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// 360 requires all possible characters during font init
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enum { ABCWIDTHS_CACHE_SIZE = 256 };
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abc_t m_ABCWidthsCache[ABCWIDTHS_CACHE_SIZE];
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#endif
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};
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#endif // WIN32FONT_H
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