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323 lines
13 KiB
323 lines
13 KiB
/*
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File: private sfnt.h
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Contains: xxx put contents here xxx
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Written by: xxx put writers here xxx
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Copyright: (c) 1987-1990, 1992 by Apple Computer, Inc., all rights reserved.
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(c) 1989-1993. Microsoft Corporation, all rights reserved.
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Change History (most recent first):
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<3+> 7/17/90 MR Change return types to in for computemapping and readsfnt
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<3> 7/14/90 MR changed SQRT to conditional FIXEDSQRT2
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<2> 7/13/90 MR Change parameters to ReadSFNT and ComputeMapping
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<1+> 4/18/90 CL
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<1> 3/21/90 EMT First checked in with Mike Reed's blessing.
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To Do:
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*/
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#include "sfnt.h"
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/* EXPORTED DATA TYPES */
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typedef struct {
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uint32 ulOffset;
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uint32 ulLength;
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} sfac_OffsetLength;
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typedef struct sfac_ClientRec *sfac_ClientRecPtr;
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typedef uint16 (FS_ENTRY_PROTO *MappingFunc) (const uint8 *, uint16 , sfac_ClientRecPtr);
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typedef struct sfac_ClientRec {
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int32 lClientID; /* User ID Number */
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GetSFNTFunc GetSfntFragmentPtr; /* User function to eat sfnt */
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ReleaseSFNTFunc ReleaseSfntFrag; /* User function to relase sfnt */
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int16 sIndexToLocFormat; /* Format of loca table */
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uint32 ulMapOffset; /* Offset to platform mapping data */
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sfac_OffsetLength TableDirectory[sfnt_NUMTABLEINDEX]; /* Table offsets/lengths */
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uint16 usNumberOf_LongHorMetrics; /* Number of entries in hmtx table */
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uint16 usMappingFormat; /* format code (0,2,4,6) for mapping func */
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MappingFunc GlyphMappingF; /* mapping function char to glyph */
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uint16 usGlyphIndex; /* Current glyph index */
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uint16 usFormat4SearchRange; /* Format 4 cached SearchRange */
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uint16 usFormat4EntrySelector; /* Format 4 cached EntrySelector */
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uint16 usFormat4RangeShift;/* Format 4 cached Range Shift */
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} sfac_ClientRec;
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/* It would be great if we could make this an opaque data type
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// But in this case, the ownership of the memory for the data is the
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// responsibility of the owner module. (i.e. sfntaccs.c) This adds
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// complications to our model (read: it is much easier to allocate the
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// data off the stack of the caller) so we won't implement this for now.
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*/
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/* Glyph Handle -- Used for access to glyph data in 'glyf' table */
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typedef struct {
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const void * pvGlyphBaseAddress; /* Base address of glyph, needed for Release */
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const void * pvGlyphNextAddress; /* Current position in glyph */
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} sfac_GHandle;
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/* ComponentTypes -- Method used for positioning component in composite */
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typedef enum {
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AnchorPoints,
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OffsetPoints,
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Undefined
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} sfac_ComponentTypes;
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/* MACROS */
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#define SFAC_LENGTH(ClientInfo,Table) ClientInfo->TableDirectory[(int)Table].ulLength
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/* PUBLIC PROTOTYPE CALLS */
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/*
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* Creates mapping for finding offset table
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*/
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FS_PUBLIC ErrorCode sfac_DoOffsetTableMap (
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sfac_ClientRec * ClientInfo); /* Sfnt Client information */
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FS_PUBLIC ErrorCode sfac_ComputeMapping (
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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uint16 usPlatformID, /* Platform Id used for mapping */
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uint16 usSpecificID); /* Specific Id used for mapping */
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FS_PUBLIC ErrorCode sfac_GetGlyphIndex(
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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uint16 usCharacterCode); /* Character code to be mapped */
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FS_PUBLIC ErrorCode sfac_GetMultiGlyphIDs (
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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uint16 usCharCount, /* Number of chars to convert */
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uint16 usFirstChar, /* First char code */
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uint16 * pusCharCode, /* or Pointer to char code list */
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uint16 * pusGlyphID); /* Output glyph ID array */
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FS_PUBLIC ErrorCode sfac_GetWin95GlyphIDs (
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uint8 * pbyCmapSubTable, /* Pointer to cmap sub table */
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uint16 usCharCount, /* Number of chars to convert */
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uint16 usFirstChar, /* First char code */
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uint16 * pusCharCode, /* or Pointer to char code list */
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uint16 * pusGlyphID); /* Output glyph ID array */
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FS_PUBLIC ErrorCode sfac_LoadCriticalSfntMetrics(
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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uint16 * pusEmResolution,/* Sfnt Em Resolution */
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boolean * pbIntegerScaling,/* Sfnt flag for int scaling */
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LocalMaxProfile * pMaxProfile); /* Sfnt Max Profile table */
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FS_PUBLIC ErrorCode sfac_ReadGlyphMetrics (
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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register uint16 glyphIndex, /* Glyph number for metrics */
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uint16 * pusNonScaledAW, /* Return: Non Scaled Advance Width */
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int16 * psNonScaledLSB);
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FS_PUBLIC ErrorCode sfac_ReadNumLongVertMetrics (
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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uint16 * pusNumLongVertMetrics ); /* Entries for which AH exists */
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FS_PUBLIC ErrorCode sfac_ReadVerticalMetrics (
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sfac_ClientRec * ClientInfo, /* Sfnt Client information */
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uint16 usGlyphIndex, /* Glyph number for metrics */
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uint16 usNumLongVertMetrics, /* Entries for which AH exists */
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uint16 * pusNonScaledAH, /* Return: Non Scaled Advance Height */
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int16 * psNonScaledTSB);/* Return: Non Scaled TopSideBearing */
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FS_PUBLIC ErrorCode sfac_CopyFontAndPrePrograms(
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sfac_ClientRec * ClientInfo, /* Sfnt Client Information */
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char * pFontProgram, /* pointer to Font Program */
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char * pPreProgram); /* pointer to Pre Program */
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FS_PUBLIC ErrorCode sfac_CopyCVT(
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sfac_ClientRec * ClientInfo, /* Client Information */
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F26Dot6 * pCVT); /* pointer to CVT */
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FS_PUBLIC ErrorCode sfac_CopyHdmxEntry(
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sfac_ClientRec * ClientInfo, /* Client Information */
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uint16 usPixelsPerEm, /* Current Pixels per Em */
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boolean * bFound, /* Flag indicating if entry found */
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uint16 usFirstGlyph, /* First Glyph to copy */
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uint16 usLastGlyph, /* Last Glyph to copy */
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int16 * psBuffer); /* Buffer to save glyph sizes */
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FS_PUBLIC ErrorCode sfac_GetLTSHEntries(
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sfac_ClientRec * ClientInfo, /* Client Information */
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uint16 usPixelsPerEm, /* Current Pixels per Em */
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uint16 usFirstGlyph, /* First Glyph to copy */
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uint16 usLastGlyph, /* Last Glyph to copy */
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int16 * psBuffer); /* Buffer to save glyph sizes */
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FS_PUBLIC ErrorCode sfac_ReadGlyphHeader(
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sfac_ClientRec * ClientInfo, /* Client Information */
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uint16 usGlyphIndex, /* Glyph index to read */
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sfac_GHandle * hGlyph, /* Return glyph handle */
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boolean * pbCompositeGlyph, /* Is glyph a composite? */
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boolean * pbHasOutline, /* Does glyph have outlines? */
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int16 * psNumberOfContours, /* Number of contours in glyph */
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BBOX * pbbox); /* Glyph Bounding box */
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FS_PUBLIC ErrorCode sfac_ReadOutlineData(
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uint8 * abyOnCurve, /* Array of on curve indicators per point */
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F26Dot6 * afxOoy, /* Array of ooy points for every point */
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F26Dot6 * afxOox, /* Array of oox points for every point */
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sfac_GHandle * hGlyph,
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LocalMaxProfile * maxProfile, /* MaxProfile Table */
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boolean bHasOutline, /* Does glyph have outlines? */
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int16 sNumberOfContours, /* Number of contours in glyph */
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int16 * asStartPoints, /* Array of start points for every contour */
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int16 * asEndPoints, /* Array of end points for every contour */
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uint16 * pusSizeOfInstructions, /* Size of instructions in bytes */
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uint8 ** pbyInstructions); /* Pointer to start of glyph instructions */
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FS_PUBLIC ErrorCode sfac_ReadComponentData(
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sfac_GHandle * hGlyph,
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sfac_ComponentTypes * pMultiplexingIndicator, /* Indicator for Anchor vs offsets */
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boolean * pbRoundXYToGrid, /* Round composite offsets to grid */
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boolean * pbUseMyMetrics, /* Use component metrics */
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boolean * pbWeHaveInstructions, /* Composite has instructions */
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uint16 * pusComponentGlyphIndex, /* Glyph index of component */
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int16 * psXOffset, /* X Offset of component (if app) */
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int16 * psYOffset, /* Y Offset of component (if app) */
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uint16 * pusAnchorPoint1, /* Anchor point 1 of component (if app) */
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uint16 * pusAnchorPoint2, /* Anchor point 2 of component (if app) */
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transMatrix *pMulT, /* Transformation matrix for component */
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boolean * pbLastComponent); /* Is this the last component? */
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/* sfac_ReadCompositeInstructions
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Returns pointer to TrueType instructions for composites.
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*/
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FS_PUBLIC ErrorCode sfac_ReadCompositeInstructions(
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sfac_GHandle * hGlyph,
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uint8 ** pbyInstructions, /* Pointer to start of glyph instructions */
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uint16 * pusSizeOfInstructions); /* Size of instructions in bytes */
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/* sfac_ReleaseGlyph
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Called when access to glyph in 'glyf' table is finished.
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*/
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FS_PUBLIC ErrorCode sfac_ReleaseGlyph(
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sfac_ClientRec * ClientInfo, /* Sfnt Client Information */
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sfac_GHandle * hGlyph); /* Glyph Handle Information */
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/**********************************************************************/
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/* Embedded Bitmap (sbit) Access Routines */
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/**********************************************************************/
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/* SFNTACCS Export Prototypes for SBIT */
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FS_PUBLIC ErrorCode sfac_SearchForStrike (
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sfac_ClientRec *pClientInfo,
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uint16 usPpemX,
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uint16 usPpemY,
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uint16 *pusTableState,
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uint16 *pusSubPpemX,
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uint16 *pusSubPpemY,
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uint32 *pulStrikeOffset
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);
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FS_PUBLIC ErrorCode sfac_SearchForBitmap (
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sfac_ClientRec *pClientInfo,
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uint16 usGlyphCode,
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uint32 ulStrikeOffset,
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boolean *pbGlyphFound,
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uint16 *pusMetricsType,
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uint16 *pusMetricsTable,
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uint32 *pulMetricsOffset,
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uint16 *pusBitmapFormat,
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uint32 *pulBitmapOffset,
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uint32 *pulBitmapLength
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);
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FS_PUBLIC ErrorCode sfac_GetSbitMetrics (
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sfac_ClientRec *pClientInfo,
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uint16 usMetricsType,
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uint16 usMetricsTable,
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uint32 ulMetricsOffset,
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uint16 *pusHeight,
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uint16 *pusWidth,
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int16 *psBearingX,
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int16 *psBearingY,
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uint16 *pusAdvance
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);
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FS_PUBLIC ErrorCode sfac_ShaveSbitMetrics (
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sfac_ClientRec *pClientInfo,
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uint16 usBitmapFormat,
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uint32 ulBitmapOffset,
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uint32 ulBitmapLength,
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uint16 usHeight,
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uint16 *pusWidth,
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uint16 *pusShaveLeft,
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uint16 *pusShaveRight,
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int16 *psBearingX
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);
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FS_PUBLIC ErrorCode sfac_GetSbitVertMetrics(
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sfac_ClientRec *pClientInfo,
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uint16 usMetricsType,
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uint16 usMetricsTable,
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uint32 ulMetricsOffset,
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boolean *pbMetricsFound,
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int16 *psTopSBy,
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uint16 *pusAdvHeight
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);
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FS_PUBLIC ErrorCode sfac_GetSbitBitmap (
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sfac_ClientRec *pClientInfo,
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uint16 usBitmapFormat,
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uint32 ulBitmapOffset,
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uint32 ulBitmapLength,
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uint16 usHeight,
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uint16 usWidth,
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uint16 usShaveLeft,
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uint16 usShaveRight,
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uint16 usXOffset,
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uint16 usYOffset,
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uint16 usRowBytes,
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uint8 *pbyBitMap,
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uint16 *pusCompCount
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);
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FS_PUBLIC ErrorCode sfac_GetSbitComponentInfo (
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sfac_ClientRec *pClientInfo,
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uint16 usComponent,
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uint32 ulBitmapOffset,
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uint32 ulBitmapLength,
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uint16 *pusCompGlyphCode,
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uint16 *pusCompXOffset,
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uint16 *pusCompYOffset
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);
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uint16 FS_ENTRY_PROTO sfac_ComputeUnkownIndex (const uint8 * mapping, uint16 charCode, sfac_ClientRec * ClientInfo);
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uint16 FS_ENTRY_PROTO sfac_ComputeIndex0 (const uint8 * mapping, uint16 charCode, sfac_ClientRec * ClientInfo);
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uint16 FS_ENTRY_PROTO sfac_ComputeIndex2 (const uint8 * mapping, uint16 charCode, sfac_ClientRec * ClientInfo);
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uint16 FS_ENTRY_PROTO sfac_ComputeIndex4 (const uint8 * mapping, uint16 charCode, sfac_ClientRec * ClientInfo);
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uint16 FS_ENTRY_PROTO sfac_ComputeIndex6 (const uint8 * mapping, uint16 charCode, sfac_ClientRec * ClientInfo);
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/**********************************************************************/
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/* Results of search for strike's bitmapSizeSubtable */
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#define SBIT_UN_SEARCHED 0
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#define SBIT_NOT_FOUND 1
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#define SBIT_BLOC_FOUND 2
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#define SBIT_BSCA_FOUND 3
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/**********************************************************************/
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