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114 lines
4.6 KiB
C++
114 lines
4.6 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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// Description : Render a glyph outline into a bitmap using FreeType 2
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#if !defined(USE_NULLFONT_ALWAYS)
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#ifndef CRYINCLUDE_CRYFONT_FONTRENDERER_H
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#define CRYINCLUDE_CRYFONT_FONTRENDERER_H
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#pragma once
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#include "GlyphBitmap.h"
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#include "FFont.h"
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#include <ft2build.h>
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#pragma push_macro("generic")
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#define generic GenericFromFreeTypeLibrary
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#include <freetype/freetype.h>
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#undef generic
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#pragma pop_macro("generic")
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// Corresponds to the Unicode character set. This value covers all versions of the Unicode repertoire,
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// including ASCII and Latin-1. Most fonts include a Unicode charmap, but not all of them.
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#define FONT_ENCODING_UNICODE (FT_ENCODING_UNICODE)
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// Corresponds to the Microsoft Symbol encoding, used to encode mathematical symbols in the 32..255 character code range.
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// For more information, see `http://www.ceviz.net/symbol.htm'.
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#define FONT_ENCODING_SYMBOL (FT_ENCODING_MS_SYMBOL)
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// Corresponds to Microsoft's Japanese SJIS encoding.
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// More info at `http://langsupport.japanreference.com/encoding.shtml'. See note on multi-byte encodings below.
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#define FONT_ENCODING_SJIS (FT_ENCODING_MS_SJIS)
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// Corresponds to the encoding system for Simplified Chinese, as used in China. Only found in some TrueType fonts.
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#define FONT_ENCODING_GB2312 (FT_ENCODING_MS_GB2312)
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// Corresponds to the encoding system for Traditional Chinese, as used in Taiwan and Hong Kong. Only found in some TrueType fonts.
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#define FONT_ENCODING_BIG5 (FT_ENCODING_MS_BIG5)
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// Corresponds to the Korean encoding system known as Wansung.
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// This is a Microsoft encoding that is only found in some TrueType fonts.
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// For more information, see `http://www.microsoft.com/typography/unicode/949.txt'.
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#define FONT_ENCODING_WANSUNG (FT_ENCODING_MS_WANSUNG)
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// The Korean standard character set (KS C-5601-1992), which corresponds to Windows code page 1361.
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// This character set includes all possible Hangeul character combinations. Only found on some rare TrueType fonts.
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#define FONT_ENCODING_JOHAB (FT_ENCODING_MS_JOHAB)
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//------------------------------------------------------------------------------------
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class CFontRenderer
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{
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public:
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CFontRenderer();
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~CFontRenderer();
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int LoadFromFile(const string& szFileName);
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int LoadFromMemory(unsigned char* pBuffer, int iBufferSize);
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int Release();
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int SetGlyphBitmapSize(int iWidth, int iHeight, float sizeRatio);
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int GetGlyphBitmapSize(int* pWidth, int* pHeight);
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int SetSizeRatio(float fSizeRatio) { m_fSizeRatio = fSizeRatio; return 1; };
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float GetSizeRatio() { return m_fSizeRatio; };
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int SetEncoding(FT_Encoding pEncoding);
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FT_Encoding GetEncoding() { return m_pEncoding; };
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//! Populates the given pGlyphBitmap's buffer from the FreeType bitmap buffer
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//! \param iCharCode Used as a character index to retrieve the FreeType glyph and it's associated bitmap buffer for the character
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//! \param pGlyphBitmap The FreeType glyph buffer is essentially copied into this CGlyphBitmap buffer
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int GetGlyph(CGlyphBitmap* pGlyphBitmap, int* iHoriAdvance, uint8* iGlyphWidth, uint8* iGlyphHeight, AZ::s32& iCharOffsetX, AZ::s32& iCharOffsetY, int iX, int iY, int iCharCode, const CFFont::FontHintParams& glyphFlags = CFFont::FontHintParams());
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int GetGlyphScaled(CGlyphBitmap* pGlyphBitmap, int* iGlyphWidth, int* iGlyphHeight, int iX, int iY, float fScaleX, float fScaleY, int iCharCode);
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void GetMemoryUsage([[maybe_unused]] ICrySizer* pSizer) const {}
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bool GetMonospaced() const { return FT_IS_FIXED_WIDTH(m_pFace) != 0; }
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Vec2 GetKerning(uint32_t leftGlyph, uint32_t rightGlyph);
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float GetAscenderToHeightRatio();
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private:
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FT_Library m_pLibrary;
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FT_Face m_pFace;
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FT_GlyphSlot m_pGlyph;
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float m_fSizeRatio;
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FT_Encoding m_pEncoding;
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int m_iGlyphBitmapWidth;
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int m_iGlyphBitmapHeight;
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};
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#endif // CRYINCLUDE_CRYFONT_FONTRENDERER_H
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#endif // #if !defined(USE_NULLFONT_ALWAYS)
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