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353 lines
12 KiB
C
353 lines
12 KiB
C
/*
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File: FontScaler.h
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Contains: xxx put contents here (or delete the whole line) xxx
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Written by: xxx put name of writer here (or delete the whole line) xxx
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Copyright: © 1988-1991 by Apple Computer, Inc., all rights reserved.
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Change History (most recent first):
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<4> 10/22/91 RB Add support for sfnt-embedded-bitmaps
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<3> 11/27/90 MR Correctly seperate definitions of Rect and Bitmap
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<2> 11/5/90 MR Clean up includes/definitions to ease porting to non-mac
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environments (ex. don't include QuickDraw.h) [rb]
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<10> 7/18/90 MR Conditionalize names in FSInput
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<9> 7/14/90 MR rename SQRT2 to FIXEDSQRT2, removed specificID and lowestRecPPEM
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from FSInfo
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<8> 7/13/90 MR FSInput now has a union to save space, points to matrix instead
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of storing it
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<6> 6/21/90 MR Change fillFunc to ReleaseSfntFrag
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<5> 6/5/90 MR remove readmvt and mapcharcodes
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<4> 5/3/90 RB Added memory area for new scan converter. MIKE REED - Removed
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.error from fsinfo structure. Added MapCharCodes and ReadMVT
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calls.
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<3> 3/20/90 CL New comment style for BBS.
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<2> 2/27/90 CL New CharToIndexMap Table format.
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<3.5> 11/15/89 CEL Placed an ifdef around inline MPW calls to the trap. This makes
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it easier to compile for skia and the likes who do not use the
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MPW compiler.
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<3.4> 11/14/89 CEL Left Side Bearing should work right for any transformation. The
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phantom points are in, even for components in a composite glyph.
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They should also work for transformations. Device metric are
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passed out in the output data structure. This should also work
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with transformations. Another leftsidebearing along the advance
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width vector is also passed out. whatever the metrics are for
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the component at it's level. Instructions are legal in
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components. Instructions are legal in components. Five
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unnecessary element in the output data structure have been
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deleted. (All the information is passed out in the bitmap data
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structure) fs_FindBMSize now also returns the bounding box.
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<3.3> 9/27/89 CEL Took out devAdvanceWidth & devLeftSideBearing.
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<3.2> 9/25/89 CEL Took out Mac specific functions.
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<3.1> 9/15/89 CEL Re-working dispatcher…
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<3.0> 8/28/89 sjk Cleanup and one transformation bugfix
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<2.2> 8/14/89 sjk 1 point contours now OK
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<2.1> 8/8/89 sjk Improved encryption handling
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<2.0> 8/2/89 sjk Just fixed EASE comment
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<1.5> 8/1/89 sjk Added composites and encryption. Plus some enhancements…
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<1.4> 6/13/89 SJK Comment
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<1.3> 6/2/89 CEL 16.16 scaling of metrics, minimum recommended ppem, point size 0
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bug, correct transformed integralized ppem behavior, pretty much
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so
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<1.2> 5/26/89 CEL EASE messed up on “c” comments
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<•1.1> 5/26/89 CEL Integrated the new Font Scaler 1.0 into Spline Fonts
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<1.0> 5/25/89 CEL Integrated 1.0 Font scaler into Bass code for the first time…
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To Do:
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*/
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#ifndef _MacTypes_
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#ifndef __TYPES__
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typedef struct Rect {
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int16 top;
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int16 left;
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int16 bottom;
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int16 right;
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} Rect;
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#endif
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#endif
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#ifndef _Quickdraw_
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#ifndef __QUICKDRAW__
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typedef struct BitMap {
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char* baseAddr;
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int16 rowBytes;
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Rect bounds;
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} BitMap;
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#endif
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#endif
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typedef struct {
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Fixed transform[3][3];
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} transMatrix;
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#define MEMORYFRAGMENTS 8
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#define NONVALID 0xffff
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/* For the flags field in the flags field */
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/* set on 68020, do not set on 68000 */
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#define READ_NONALIGNED_SHORT_IS_OK 0x0001 /* set when calling fs_OpenFonts() */
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/* set on 68020, do not set on 68000 */
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#define READ_NONALIGNED_LONG_IS_OK 0x0002 /* set when calling fs_OpenFonts() */
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typedef struct {
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Fixed x, y;
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} vectorType;
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typedef struct {
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vectorType advanceWidth, leftSideBearing;
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vectorType leftSideBearingLine, devLeftSideBearingLine;/* along AW line */
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vectorType devAdvanceWidth, devLeftSideBearing;
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} metricsType;
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/*
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* Output data structure to the Font Scaler.
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*/
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typedef struct {
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int32 memorySizes[MEMORYFRAGMENTS];
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uint16 glyphIndex;
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uint16 numberOfBytesTaken; /* from the character code */
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metricsType metricInfo;
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BitMap bitMapInfo;
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/* Spline Data */
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int32 outlineCacheSize;
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uint16 outlinesExist;
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uint16 numberOfContours;
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F26Dot6 *xPtr, *yPtr;
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int16 *startPtr;
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int16 *endPtr;
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uint8 *onCurve;
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/* End of spline data */
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/* Only of interest to editors */
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F26Dot6 *scaledCVT;
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/* For scalers that know about bitmaps in sfnts.
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Note: We do not return optical point-size of available bitmap font. But we do
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indicate whether the available bitmap was an exact-exact match.
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*/
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#if TheFuture /* <4 > EBITMAP */
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uint16 bitmapMethod;
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uint8 bitmapHorizontalPPEM;
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uint8 bitmapVerticalPPEM;
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#endif
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} fs_GlyphInfoType;
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/*
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* Input data structure to the Font Scaler.
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*
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* if styleFunc is set to non-zero it will be called just before the transformation
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* will be applied, but after the grid-fitting with a pointer to fs_GlyphInfoType.
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* so this is what styleFunc should be voidFunc StyleFunc( fs_GlyphInfoType *data );
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* For normal operation set this function pointer to zero.
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*
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*/
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#ifndef UNNAMED_UNION
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typedef struct {
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Fixed version;
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char* memoryBases[MEMORYFRAGMENTS];
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int32 *sfntDirectory; /* (sfnt_OffsetTable *) always needs to be set, when we have the sfnt */
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GetSFNTFunc GetSfntFragmentPtr; /* ( clientID, offset, length ) */
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ReleaseSFNTFunc ReleaseSfntFrag;
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int32 clientID; /* client private id/stamp (eg. handle for the sfnt ) */
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union {
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struct {
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uint16 platformID;
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uint16 specificID;
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} newsfnt;
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struct {
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Fixed pointSize;
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int16 xResolution;
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int16 yResolution;
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Fixed pixelDiameter; /* compute engine char from this */
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transMatrix* transformMatrix;
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voidFunc traceFunc;
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#if TheFuture /* <4 > EBITMAP */
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uint8 bitmapMethodPreferences;
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uint8 scalingPreference;
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#endif
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} newtrans;
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struct {
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uint16 characterCode;
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uint16 glyphIndex;
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#if TheFuture /* <4 > EBITMAP */
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uint8 bitmapMethodPreferences;
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uint8 scalingPreference;
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#endif
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} newglyph;
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struct {
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void (*styleFunc)(fs_GlyphInfoType*);
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voidFunc traceFunc;
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} gridfit;
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int32* outlineCache;
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struct {
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int16 bottomClip;
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int16 topClip;
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int32* outlineCache;
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} scan;
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} param;
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} fs_GlyphInputType;
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#else
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typedef struct {
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Fixed version;
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char* memoryBases[MEMORYFRAGMENTS];
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int32 *sfntDirectory; /* (sfnt_OffsetTable *) always needs to be set, when we have the sfnt */
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GetSFNTFunc GetSfntFragmentPtr; /* ( clientID, offset, length ) */
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ReleaseSFNTFunc ReleaseSfntFrag;
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int32 clientID; /* client private id/stamp (eg. handle for the sfnt ) */
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union {
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struct {
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uint16 platformID;
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uint16 specificID;
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};
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struct {
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Fixed pointSize;
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int16 xResolution;
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int16 yResolution;
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Fixed pixelDiameter; /* compute engine char from this */
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transMatrix* transformMatrix;
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voidFunc tracePreProgramFunc;
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#if TheFuture /* <4 > EBITMAP */
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uint8 bitmapMethodPreferences;
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uint8 scalingPreference;
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#endif
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};
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struct {
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uint16 characterCode;
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uint16 glyphIndex;
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#if TheFuture /* <4 > EBITMAP */
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uint8 bitmapMethodPreferences;
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uint8 scalingPreference;
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#endif
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};
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struct {
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void (*traceStyleFunc)(fs_GlyphInfoType*);
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voidFunc traceGridFitFunc;
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};
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int32* outlineCache;
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struct {
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int16 bottomClip;
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int16 topClip;
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int32* outlineCache;
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};
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};
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} fs_GlyphInputType;
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#endif /* unnamed union */
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#ifndef FIXEDSQRT2
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#define FIXEDSQRT2 0x00016A0A
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#endif
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/* Font scaler trap selctors */
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#define OUTLINEFONTTRAP 0xA854
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#define FS_OPENFONTS 0x8000
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#define FS_INITIALIZE 0x8001
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#define FS_NEWSFNT 0x8002
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#define FS_NEWTRANS 0x8003
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#define FS_NEWGLYPH 0x8004
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#define FS_GETAW 0x8005
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#define FS_GRIDFITT 0x8006
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#define FS_NOGRIDFITT 0x8007
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#define FS_FINDBMSIZE 0x8008
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#define FS_SIZEOFOUTLINES 0x8009
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#define FS_SAVEOUTLINES 0x800a
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#define FS_RESTOREOUTLINES 0x800b
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#define FS_CONTOURSCAN 0x800c
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#define FS_CLOSE 0x800d
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#if TheFuture /* <4 > EBITMAP */
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#define FS_GETGLYPHINFO 0x800e
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#define FS_GETGLYPHDATA 0x800f
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#define FS_GETBITMAPINFO 0x8010
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#define FS_GETBITMAPHDATA 0x8011
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#endif
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#ifdef MACINIT
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extern pascal int32 fs__OpenFonts(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_OPENFONTS,0xA854};
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extern pascal int32 fs__Initialize(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_INITIALIZE,0xA854};
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extern pascal int32 fs__NewSfnt(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_NEWSFNT,0xA854};
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extern pascal int32 fs__NewTransformation(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_NEWTRANS,0xA854};
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extern pascal int32 fs__NewGlyph(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_NEWGLYPH,0xA854};
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extern pascal int32 fs__GetAdvanceWidth(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_GETAW,0xA854};
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extern pascal int32 fs__ContourGridFit(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_GRIDFITT,0xA854};
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extern pascal int32 fs__ContourNoGridFit(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_NOGRIDFITT,0xA854};
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extern pascal int32 fs__FindBitMapSize(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_FINDBMSIZE,0xA854};
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#if TheFuture /* <4 > EBITMAP */
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extern pascal int32 fs__GetGlyphInfo(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_GETGLYPHINFO,0xA854};
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extern pascal int32 fs__GetGlyphData(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_GETGLYPHDATA,0xA854};
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extern pascal int32 fs__GetBitMapInfo(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_GETBITMAPINFO,0xA854};
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extern pascal int32 fs__GetBitMapData(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_GETBITMAPHDATA,0xA854};
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#endif
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/* these three optional calls are for caching the outlines */
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extern pascal int32 fs__SizeOfOutlines(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_SIZEOFOUTLINES,0xA854};
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extern pascal int32 fs__SaveOutlines(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_SAVEOUTLINES,0xA854};
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extern pascal int32 fs__RestoreOutlines(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_RESTOREOUTLINES,0xA854};
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extern pascal int32 fs__ContourScan(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_CONTOURSCAN,0xA854};
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extern pascal int32 fs__CloseFonts(fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr)
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= {0x303C,FS_CLOSE,0xA854};
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#else
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/*** Direct Calls to Font Scaler Client Interface, for Clients not using the trap mechanism ***/
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extern pascal int32 fs_OpenFonts( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_Initialize( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_NewSfnt( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_NewTransformation( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_NewGlyph( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_GetAdvanceWidth( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_ContourGridFit( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_ContourNoGridFit( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_FindBitMapSize( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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#if TheFuture /* <4> EBITMAP */
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extern pascal int32 fs_GetGlyphInfo( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_GetGlyphData( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_GetBitMapInfo( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_GetBitMapData( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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#endif
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/* these three optional calls are for caching the outlines */
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extern pascal int32 fs_SizeOfOutlines( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_SaveOutlines( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_RestoreOutlines( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_ContourScan( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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extern pascal int32 fs_CloseFonts( fs_GlyphInputType *inputPtr, fs_GlyphInfoType *outputPtr );
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#endif
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/***/ |