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-/****************************************************************************\
- Part of the XeTeX typesetting system
- Copyright (c) 1994-2008 by SIL International
- Copyright (c) 2009, 2011 by Jonathan Kew
-
- SIL Author(s): Jonathan Kew
-
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of this software and associated documentation files (the
-"Software"), to deal in the Software without restriction, including
-without limitation the rights to use, copy, modify, merge, publish,
-distribute, sublicense, and/or sell copies of the Software, and to
-permit persons to whom the Software is furnished to do so, subject to
-the following conditions:
-
-The above copyright notice and this permission notice shall be
-included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
-FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
-CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the copyright holders
-shall not be used in advertising or otherwise to promote the sale,
-use or other dealings in this Software without prior written
-authorization from the copyright holders.
-\****************************************************************************/
-
-/*
- * file name: XeTeXFontInst.h
- *
- * created on: 2005-10-22
- * created by: Jonathan Kew
- *
- * originally based on PortableFontInstance.h from ICU
- */
-
-
-#ifndef __XeTeXFontInst_H
-#define __XeTeXFontInst_H
-
-#include "XeTeXFontMgr.h"
-
-#include <stdio.h>
-#include <ft2build.h>
-#include FT_FREETYPE_H
-#include FT_TRUETYPE_TABLES_H
-
-// create specific subclasses for each supported platform
-
-class XeTeXFontInst
-{
-protected:
- unsigned short m_unitsPerEM;
- float m_pointSize;
- float m_ascent;
- float m_descent;
- float m_capHeight;
- float m_xHeight;
- float m_italicAngle;
-
- bool m_vertical; // false = horizontal, true = vertical
-
- char *m_filename; // font filename
- uint32_t m_index; // face index
-
- FT_Face m_ftFace;
- hb_font_t* m_hbFont;
-
-public:
- XeTeXFontInst(float pointSize, int &status);
- XeTeXFontInst(const char* filename, int index, float pointSize, int &status);
-
- virtual ~XeTeXFontInst();
-
- void initialize(const char* pathname, int index, int &status);
-
- void *getFontTable(OTTag tableTag) const;
- void *getFontTable(FT_Sfnt_Tag tableTag) const;
-
- const char *getFilename(uint32_t* index) const
- {
- *index = m_index;
- return m_filename;
- }
- hb_font_t *getHbFont() const { return m_hbFont; }
- void setLayoutDirVertical(bool vertical);
- bool getLayoutDirVertical() const { return m_vertical; };
-
- float getPointSize() const { return m_pointSize; };
- float getAscent() const { return m_ascent; }
- float getDescent() const { return m_descent; }
- float getCapHeight() const { return m_capHeight; }
- float getXHeight() const { return m_xHeight; }
- float getItalicAngle() const { return m_italicAngle; }
-
- GlyphID mapCharToGlyph(UChar32 ch) const;
- GlyphID mapGlyphToIndex(const char* glyphName) const;
-
- uint16_t getNumGlyphs() const;
-
- void getGlyphBounds(GlyphID glyph, GlyphBBox* bbox);
-
- float getGlyphWidth(GlyphID glyph);
- void getGlyphHeightDepth(GlyphID glyph, float *ht, float* dp);
- void getGlyphSidebearings(GlyphID glyph, float* lsb, float* rsb);
- float getGlyphItalCorr(GlyphID glyph);
-
- const char* getGlyphName(GlyphID gid, int& nameLen);
-
- UChar32 getFirstCharCode();
- UChar32 getLastCharCode();
-
- float unitsToPoints(float units) const
- {
- return (units * m_pointSize) / (float) m_unitsPerEM;
- }
-
- float pointsToUnits(float points) const
- {
- return (points * (float) m_unitsPerEM) / m_pointSize;
- }
-};
-
-#endif