147 lines
3.8 KiB
C++
147 lines
3.8 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 OSXFONT_H
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#define OSXFONT_H
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#include "utlrbtree.h"
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#include "utlsymbol.h"
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#include "tier1/strtools.h"
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#include "tier1/utlstring.h"
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#include <tier0/memdbgoff.h>
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#include <ApplicationServices/ApplicationServices.h>
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#include <Carbon/Carbon.h>
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#include <tier0/memdbgon.h>
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//-----------------------------------------------------------------------------
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// Purpose: encapsulates a OSX font
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//-----------------------------------------------------------------------------
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class COSXFont
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{
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public:
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COSXFont();
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~COSXFont();
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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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ATSUStyle *SetAsActiveFont( CGContextRef cgContext );
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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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virtual 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 weight of the font
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virtual int GetWeight() { return m_iWeight; }
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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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#ifdef DBGFLAG_VALIDATE
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void Validate( CValidator &validator, char *pchName );
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#endif
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protected:
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CUtlString m_szName;
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int m_iTall;
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int m_iWeight;
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int m_iFlags;
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bool m_bAntiAliased;
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bool m_bRotary;
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bool m_bAdditive;
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int m_iDropShadowOffset;
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bool m_bUnderlined;
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int m_iOutlineSize;
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int m_iHeight;
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int m_iMaxCharWidth;
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int m_iAscent;
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int m_iScanLines;
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int m_iBlur;
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float *m_pGaussianDistribution;
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private:
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bool CreateStyle( float flFontSize, bool bBold );
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bool CreateTextLayout();
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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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// Cache for storing asian abc widths (since it's too big too just store them all).
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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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// Cache for storing asian abc widths (since it's too big too just store them all).
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struct kernedSize
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{
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float wide;
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float abcA;
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};
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struct kerned_abc_cache_t
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{
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wchar_t wch;
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wchar_t wchBefore;
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wchar_t wchAfter;
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kernedSize abc;
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};
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static bool ExtendedABCWidthsCacheLessFunc(const abc_cache_t &lhs, const abc_cache_t &rhs);
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static bool ExtendedKernedABCWidthsCacheLessFunc(const kerned_abc_cache_t &lhs, const kerned_abc_cache_t &rhs);
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CUtlRBTree<abc_cache_t, unsigned short> m_ExtendedABCWidthsCache;
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CUtlRBTree<kerned_abc_cache_t, unsigned short> m_ExtendedKernedABCWidthsCache;
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char *m_pContextMemory;
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ATSUFontID m_ATSUFont;
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CGContextRef m_ContextRef;
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ATSUStyle m_ATSUStyle;
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ATSUTextLayout m_ATSUTextLayout;
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};
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#endif // OSXFONT_H
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