/* Copyright (C) 2000 Aladdin Enterprises.  All rights reserved.
  
  This software is provided AS-IS with no warranty, either express or
  implied.
  
  This software is distributed under license and may not be copied,
  modified or distributed except as expressly authorized under the terms
  of the license contained in the file LICENSE in this distribution.
  
  For more information about licensing, please refer to
  http://www.ghostscript.com/licensing/. For information on
  commercial licensing, go to http://www.artifex.com/licensing/ or
  contact Artifex Software, Inc., 101 Lucas Valley Road #110,
  San Rafael, CA  94903, U.S.A., +1(415)492-9861.
*/

/*$Id: gxttf.h,v 1.3 2002/04/23 11:58:46 easysw Exp $ */
/* Table definitions for TrueType fonts */

#ifndef gxttf_INCLUDED
#  define gxttf_INCLUDED

/* ------ head ------ */

typedef struct ttf_head_s {
    byte
	version[4],		/* version 1.0 */
	fontRevision[4],
	checkSumAdjustment[4],
	magicNumber[4],
	flags[2],
	unitsPerEm[2],
	created[8],
	modified[8],
	xMin[2],
	yMin[2],
	xMax[2],
	yMax[2],
	macStyle[2],
	lowestRecPPM[2],
	fontDirectionHint[2],
	indexToLocFormat[2],
	glyphDataFormat[2];
} ttf_head_t;

/* ------ hhea ------ */

typedef struct ttf_hhea_s {
    byte
	version[4],		/* version 1.0 */
	ascender[2],		/* FWord */
	descender[2],		/* FWord */
	lineGap[2],		/* FWord */
	advanceWidthMax[2],	/* uFWord */
	minLeftSideBearing[2],	/* FWord */
	minRightSideBearing[2],	/* FWord */
	xMaxExtent[2],		/* FWord */
	caretSlopeRise[2],
	caretSlopeRun[2],
	caretOffset[2],
	reserved[8],
	metricDataFormat[2],	/* 0 */
	numHMetrics[2];
} ttf_hhea_t;

/* ------ hmtx ------ */

typedef struct longHorMetric_s {
    byte
	advanceWidth[2],	/* uFWord */
	lsb[2];			/* FWord */
} longHorMetric_t;

/* ------ maxp ------ */

typedef struct ttf_maxp_s {
    byte
	version[2],		/* 1.0 */
	numGlyphs[2],
	maxPoints[2],
	maxContours[2],
	maxCompositePoints[2],
	maxCompositeContours[2],
	maxZones[2],
	maxTwilightPoints[2],
	maxStorage[2],
	maxFunctionDefs[2],
	maxInstructionDefs[2],
	maxStackElements[2],
	maxSizeOfInstructions[2],
	maxComponentElements[2],
	maxComponentDepth[2];
} ttf_maxp_t;

/* ------ OS/2 ------ */

typedef struct ttf_OS_2_s {
    byte
	version[2],		/* version 1 */
	xAvgCharWidth[2],
	usWeightClass[2],
	usWidthClass[2],
	fsType[2],
	ySubscriptXSize[2],
	ySubscriptYSize[2],
	ySubscriptXOffset[2],
	ySubscriptYOffset[2],
	ySuperscriptXSize[2],
	ySuperscriptYSize[2],
	ySuperscriptXOffset[2],
	ySuperscriptYOffset[2],
	yStrikeoutSize[2],
	yStrikeoutPosition[2],
	sFamilyClass[2],
	/*panose:*/
	    bFamilyType, bSerifStyle, bWeight, bProportion, bContrast,
	    bStrokeVariation, bArmStyle, bLetterform, bMidline, bXHeight,
	ulUnicodeRanges[16],
	achVendID[4],
	fsSelection[2],
	usFirstCharIndex[2],
	usLastCharIndex[2],
	sTypoAscender[2],
	sTypoDescender[2],
	sTypoLineGap[2],
	usWinAscent[2],
	usWinDescent[2],
	ulCodePageRanges[8];
} ttf_OS_2_t;

/* ------ vhea ------ */

typedef struct ttf_vhea_s {
    byte
	version[4],		/* version 1.0 */
	ascent[2],		/* FWord */
	descent[2],		/* FWord */
	lineGap[2],		/* FWord */
	advanceHeightMax[2],	/* uFWord */
	minTopSideBearing[2],	/* FWord */
	minBottomSideBearing[2],  /* FWord */
	yMaxExtent[2],		/* FWord */
	caretSlopeRise[2],
	caretSlopeRun[2],
	caretOffset[2],
	reserved[8],
	metricDataFormat[2],	/* 0 */
	numVMetrics[2];
} ttf_vhea_t;

/* ------ vmtx ------ */

typedef struct longVerMetric_s {
    byte
	advanceHeight[2],	/* uFWord */
	topSideBearing[2];	/* FWord */
} longVerMetric_t;

#endif /* gxttf_INCLUDED */
