mirror of
https://github.com/elliotnunn/mac-rom.git
synced 2024-12-22 23:29:27 +00:00
4325cdcc78
Resource forks are included only for .rsrc files. These are DeRezzed into their data fork. 'ckid' resources, from the Projector VCS, are not included. The Tools directory, containing mostly junk, is also excluded.
282 lines
11 KiB
C
282 lines
11 KiB
C
/*
|
|
File: fnt.h
|
|
|
|
Contains: xxx put contents here (or delete the whole line) xxx
|
|
|
|
Written by: xxx put name of writer here (or delete the whole line) xxx
|
|
|
|
Copyright: © 1987-1990 by Apple Computer, Inc., all rights reserved.
|
|
|
|
Change History (most recent first):
|
|
|
|
<6> 12/5/90 MR Remove unneeded leftSideBearing[in,out] and advanceWidth[in,out]
|
|
fields. [rb]
|
|
<5> 11/27/90 MR Better typedefs for function pointers [rb]
|
|
<4> 11/16/90 MR More debugging code [rb]
|
|
<3> 11/5/90 MR Change globalGS.ppemDot6 to globalGS.fpem. InstrPtrs and
|
|
curvePtr are now all uint8*. [rb]
|
|
<2> 10/20/90 MR Restore changes since project died. Converting to 2.14 vectors,
|
|
smart math routines. [rb]
|
|
<0+> 10/19/90 MR Restore changes since project died. Converting to 2.14 vectors,
|
|
smart math routines.
|
|
<10> 7/26/90 MR rearrange local graphic state, remove unused parBlockPtr
|
|
<9> 7/18/90 MR change loop variable from long to short, and other Ansi-changes
|
|
<8> 7/13/90 MR Prototypes for function pointers
|
|
<5> 6/4/90 MR Remove MVT
|
|
<4> 5/3/90 RB replaced dropoutcontrol with scancontrolin and scancontrol out
|
|
in global graphics state
|
|
<3> 3/20/90 CL fields for multiple preprograms fields for ppemDot6 and
|
|
pointSizeDot6 changed SROUND to take D/2 as argument
|
|
<2> 2/27/90 CL Added DSPVTL[] instruction. Dropoutcontrol scanconverter and
|
|
SCANCTRL[] instruction
|
|
<3.1> 11/14/89 CEL Fixed two small bugs/feature in RTHG, and RUTG. Added SROUND &
|
|
S45ROUND.
|
|
<3.0> 8/28/89 sjk Cleanup and one transformation bugfix
|
|
<2.2> 8/14/89 sjk 1 point contours now OK
|
|
<2.1> 8/8/89 sjk Improved encryption handling
|
|
<2.0> 8/2/89 sjk Just fixed EASE comment
|
|
<1.7> 8/1/89 sjk Added composites and encryption. Plus some enhancementsÉ
|
|
<1.6> 6/13/89 SJK Comment
|
|
<1.5> 6/2/89 CEL 16.16 scaling of metrics, minimum recommended ppem, point size 0
|
|
bug, correct transformed integralized ppem behavior, pretty much
|
|
so
|
|
<1.4> 5/26/89 CEL EASE messed up on ÒcÓ comments
|
|
<¥1.3> 5/26/89 CEL Integrated the new Font Scaler 1.0 into Spline Fonts
|
|
|
|
To Do:
|
|
*/
|
|
/* rwb 4/24/90 Replaced dropoutControl with scanControlIn and scanControlOut in
|
|
global graphics state.
|
|
<3+> 3/20/90 mrr Added support for IDEFs. Made funcDefs long aligned
|
|
by storing int16 length instead of int32 end.
|
|
*/
|
|
|
|
#define fnt_pixelSize 0x40L
|
|
#define fnt_pixelShift 6
|
|
|
|
#define MAXBYTE_INSTRUCTIONS 256
|
|
|
|
#define VECTORTYPE ShortFrac
|
|
#define ONEVECTOR ONESHORTFRAC
|
|
#define VECTORMUL(value, component) ShortFracMul(value, component)
|
|
#define VECTORDOT(a,b) ShortFracDot(a,b)
|
|
#define VECTORMULDIV(a,b,c) ShortMulDiv(a,b,c)
|
|
#define ONESIXTEENTHVECTOR ((ONEVECTOR) >> 4)
|
|
|
|
typedef struct VECTOR {
|
|
VECTORTYPE x;
|
|
VECTORTYPE y;
|
|
} VECTOR;
|
|
|
|
typedef struct {
|
|
F26Dot6 *x; /* The Points the Interpreter modifies */
|
|
F26Dot6 *y; /* The Points the Interpreter modifies */
|
|
F26Dot6 *ox; /* Old Points */
|
|
F26Dot6 *oy; /* Old Points */
|
|
F26Dot6 *oox; /* Old Unscaled Points, really ints */
|
|
F26Dot6 *ooy; /* Old Unscaled Points, really ints */
|
|
uint8 *onCurve; /* indicates if a point is on or off the curve */
|
|
int16 nc; /* Number of contours */
|
|
int16 padWord; /* <4> */
|
|
int16 *sp; /* Start points */
|
|
int16 *ep; /* End points */
|
|
uint8 *f; /* Internal flags, one byte for every point */
|
|
} fnt_ElementType;
|
|
|
|
typedef struct {
|
|
int32 start; /* offset to first instruction */
|
|
uint16 length; /* number of bytes to execute <4> */
|
|
uint16 pgmIndex; /* index to appropriate preprogram for this func (0..1) */
|
|
} fnt_funcDef;
|
|
|
|
/* <4> pretty much the same as fnt_funcDef, with the addition of opCode */
|
|
typedef struct {
|
|
int32 start;
|
|
uint16 length;
|
|
uint8 pgmIndex;
|
|
uint8 opCode;
|
|
} fnt_instrDef;
|
|
|
|
typedef struct {
|
|
Fract x;
|
|
Fract y;
|
|
} fnt_FractPoint;
|
|
|
|
/***************** This is stored as FractPoint[] and distance[]
|
|
typedef struct {
|
|
Fract x, y;
|
|
int16 distance;
|
|
} fnt_AngleInfo;
|
|
*******************/
|
|
|
|
typedef void (*FntFunc)(struct fnt_LocalGraphicStateType*);
|
|
typedef void (*InterpreterFunc)(struct fnt_LocalGraphicStateType*, uint8*, uint8*);
|
|
typedef void (*FntMoveFunc)(struct fnt_LocalGraphicStateType*, fnt_ElementType*, ArrayIndex, F26Dot6);
|
|
typedef F26Dot6 (*FntRoundFunc)(F26Dot6 xin, F26Dot6 engine, struct fnt_LocalGraphicStateType* gs);
|
|
typedef F26Dot6 (*FntProjFunc)(struct fnt_LocalGraphicStateType*, F26Dot6 x, F26Dot6 y);
|
|
|
|
typedef struct {
|
|
|
|
/* PARAMETERS CHANGEABLE BY TT INSTRUCTIONS */
|
|
F26Dot6 wTCI; /* width table cut in */
|
|
F26Dot6 sWCI; /* single width cut in */
|
|
F26Dot6 scaledSW; /* scaled single width */
|
|
int32 scanControl; /* controls kind and when of dropout control */
|
|
int32 instructControl; /* controls gridfitting and default setting */
|
|
|
|
F26Dot6 minimumDistance; /* moved from local gs 7/1/90 */
|
|
FntRoundFunc RoundValue; /* */
|
|
F26Dot6 periodMask; /* ~(gs->period-1) */
|
|
Fract period45; /* */
|
|
int16 period; /* for power of 2 periods */
|
|
int16 phase; /* */
|
|
int16 threshold; /* moved from local gs 7/1/90 */
|
|
|
|
int16 deltaBase;
|
|
int16 deltaShift;
|
|
int16 angleWeight;
|
|
int16 sW; /* single width, expressed in the same units as the character */
|
|
int8 autoFlip; /* The auto flip Boolean */
|
|
int8 pad;
|
|
} fnt_ParameterBlock; /* this is exported to client */
|
|
|
|
#define MAXANGLES 20
|
|
#define ROTATEDGLYPH 0x100
|
|
#define STRETCHEDGLYPH 0x200
|
|
#define NOGRIDFITFLAG 1
|
|
#define DEFAULTFLAG 2
|
|
|
|
typedef enum {
|
|
PREPROGRAM,
|
|
FONTPROGRAM,
|
|
MAXPREPROGRAMS
|
|
} fnt_ProgramIndex;
|
|
|
|
typedef struct fnt_GlobalGraphicStateType {
|
|
F26Dot6* stackBase; /* the stack area */
|
|
F26Dot6* store; /* the storage area */
|
|
F26Dot6* controlValueTable; /* the control value table */
|
|
|
|
uint16 pixelsPerEm; /* number of pixels per em as an integer */
|
|
uint16 pointSize; /* the requested point size as an integer */
|
|
Fixed fpem; /* fractional pixels per em <3> */
|
|
F26Dot6 engine[4]; /* Engine Characteristics */
|
|
|
|
fnt_ParameterBlock defaultParBlock; /* variables settable by TT instructions */
|
|
fnt_ParameterBlock localParBlock;
|
|
|
|
/* Only the above is exported to Client throught FontScaler.h */
|
|
|
|
/* VARIABLES NOT DIRECTLY MANIPULABLE BY TT INSTRUCTIONS */
|
|
|
|
FntFunc* function; /* pointer to instruction definition area */
|
|
fnt_funcDef* funcDef; /* function Definitions identifiers */
|
|
fnt_instrDef* instrDef; /* instruction Definitions identifiers */
|
|
F26Dot6 (*ScaleFunc)(struct fnt_GlobalGraphicStateType*, F26Dot6); /* Call back function to do scaling */
|
|
uint8* pgmList[MAXPREPROGRAMS]; /* each program ptr is in here */
|
|
|
|
/* These are parameters used by the call back function */
|
|
Fixed fixedScale; /* fixed sc aling factor */
|
|
int32 nScale; /* numerator required to scale points to the right size*/
|
|
int32 dScale; /* denumerator required to scale points to the right size */
|
|
int16 shift; /* 2log of dScale */
|
|
int8 identityTransformation; /* true/false (does not mean identity from a global sense) */
|
|
int8 non90DegreeTransformation; /* bit 0 is 1 if non-90 degree, bit 1 is 1 if x scale doesn't equal y scale */
|
|
Fixed xStretch; /* Tweaking for glyphs under transformational stress <4> */
|
|
Fixed yStretch;
|
|
|
|
/** these two together make fnt_AngleInfo **/
|
|
fnt_FractPoint* anglePoint;
|
|
int16* angleDistance;
|
|
|
|
int8 init; /* executing preprogram ?? */
|
|
uint8 pgmIndex; /* which preprogram is current */
|
|
LoopCount instrDefCount; /* number of currently defined IDefs */
|
|
|
|
#ifdef DEBUG
|
|
sfnt_maxProfileTable* maxp;
|
|
uint16 cvtCount;
|
|
uint16 glyphIndex;
|
|
boolean glyphProgram;
|
|
#endif
|
|
|
|
} fnt_GlobalGraphicStateType;
|
|
|
|
typedef F26Dot6 (*GlobalGSScaleFunc)(fnt_GlobalGraphicStateType*, F26Dot6);
|
|
|
|
/*
|
|
* This is the local graphics state
|
|
*/
|
|
typedef struct fnt_LocalGraphicStateType {
|
|
fnt_ElementType *CE0, *CE1, *CE2; /* The character element pointers */
|
|
VECTOR proj; /* Projection Vector */
|
|
VECTOR free; /* Freedom Vector */
|
|
VECTOR oldProj; /* Old Projection Vector */
|
|
F26Dot6 *stackPointer;
|
|
|
|
uint8 *insPtr; /* Pointer to the instruction we are about to execute */
|
|
fnt_ElementType *elements;
|
|
fnt_GlobalGraphicStateType *globalGS;
|
|
FntFunc TraceFunc;
|
|
|
|
ArrayIndex Pt0, Pt1, Pt2; /* The internal reference points */
|
|
int16 roundToGrid;
|
|
LoopCount loop; /* The loop variable */
|
|
uint8 opCode; /* The instruction we are executing */
|
|
uint8 padByte;
|
|
int16 padWord;
|
|
|
|
/* Above is exported to client in FontScaler.h */
|
|
|
|
VECTORTYPE pfProj; /* = pvx * fvx + pvy * fvy */
|
|
|
|
FntMoveFunc MovePoint;
|
|
FntProjFunc Project;
|
|
FntProjFunc OldProject;
|
|
InterpreterFunc Interpreter;
|
|
F26Dot6 (*GetCVTEntry) (struct fnt_LocalGraphicStateType *gs, ArrayIndex n);
|
|
F26Dot6 (*GetSingleWidth) (struct fnt_LocalGraphicStateType *gs);
|
|
|
|
jmp_buf env; /* always be at the end, since it is unknown size */
|
|
|
|
} fnt_LocalGraphicStateType;
|
|
|
|
/*
|
|
* Executes the font instructions.
|
|
* This is the external interface to the interpreter.
|
|
*
|
|
* Parameter Description
|
|
*
|
|
* elements points to the character elements. Element 0 is always
|
|
* reserved and not used by the actual character.
|
|
*
|
|
* ptr points at the first instruction.
|
|
* eptr points to right after the last instruction
|
|
*
|
|
* globalGS points at the global graphics state
|
|
*
|
|
* TraceFunc is pointer to a callback functioned called with a pointer to the
|
|
* local graphics state if TraceFunc is not null. The call is made just before
|
|
* every instruction is executed.
|
|
*
|
|
* Note: The stuff globalGS is pointing at must remain intact
|
|
* between calls to this function.
|
|
*/
|
|
extern int fnt_Execute(fnt_ElementType *elements, uint8 *ptr, uint8 *eptr,
|
|
fnt_GlobalGraphicStateType *globalGS, voidFunc TraceFunc);
|
|
/*
|
|
* Init routine, to be called at boot time.
|
|
*/
|
|
extern void fnt_Init(fnt_GlobalGraphicStateType *globalGS);
|
|
/* Export internal rounding routines so globalGraphicsState->defaultParBlock.RoundValue
|
|
* can be set in fsglue.c
|
|
*/
|
|
extern F26Dot6 fnt_RoundToDoubleGrid(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_RoundDownToGrid(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_RoundUpToGrid(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_RoundToGrid(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_RoundToHalfGrid(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_RoundOff(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_SuperRound(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|
|
extern F26Dot6 fnt_Super45Round(F26Dot6 xin, F26Dot6 engine, fnt_LocalGraphicStateType *gs);
|