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/****************************************************************************
Unit Cache; Interface
*****************************************************************************
Module Prefix: Ca
*****************************************************************************/
#define CaEmpty 0
#define CaLine 1
#define CaRectangle 2
#define CaRoundRect 3
#define CaEllipse 4
#define CaArc 5
#define CaPie 6
#define CaPolygon 7
#define CaPolyLine 8
typedef struct
{
Word type;
Word verb;
union
{
struct
{
Point start;
Point end;
Point pnSize;
} line;
struct
{
Rect bbox;
Point oval;
} rect;
struct
{
Rect bbox;
Point start;
Point end;
} arc;
struct
{
Integer numPoints;
Point far * pointList;
Point pnSize;
} poly;
} a;
} CaPrimitive, far * CaPrimitiveLPtr;
/*********************** Exported Function Definitions **********************/
void CaInit( Handle metafile );
/* initialize the gdi cache module */
void CaFini( void );
/* close down the cache module */
void CaSetMetafileDefaults( void );
/* Set up any defaults that will be used throughout the metafile context */
Word CaGetCachedPrimitive( void );
/* return the current cached primitive type */
void CaSamePrimitive( Boolean same );
/* indicate whether next primitive is the same or new */
void CaMergePen( Word verb );
/* indicate that next pen should be merged with previous logical pen */
void CaCachePrimitive( CaPrimitiveLPtr primLPtr );
/* Cache the primitive passed down. This includes the current pen and brush. */
void CaFlushCache( void );
/* Flush the current primitive stored in the cache */
void CaFlushAttributes( void );
/* flush any pending attribute elements */
void CaCreatePenIndirect( LOGPEN far * newLogPen );
/* create a new pen */
void CaCreateBrushIndirect( LOGBRUSH far * newLogBrush );
/* Create a new logical brush using structure passed in */
void CaCreateFontIndirect( LOGFONT far * newLogFont );
/* create the logical font passed as paramter */
void CaSetBkMode( Word mode );
/* set the backgound transfer mode */
void CaSetROP2( Word ROP2Code );
/* set the transfer ROP mode according to ROP2Code */
void CaSetStretchBltMode( Word mode );
/* stretch blt mode - how to preserve scanlines using StretchDIBits() */
void CaSetTextAlign( Word txtAlign );
/* set text alignment according to parameter */
void CaSetTextColor( RGBColor txtColor );
/* set the text color if different from current setting */
void CaSetTextCharacterExtra( Integer chExtra );
/* set the character extra spacing */
void CaSetBkColor( RGBColor bkColor );
/* set background color if different from current setting */
Boolean CaIntersectClipRect( Rect rect );
/* Create new clipping rectangle - return FALSE if drawing is disabled */
void CaSetClipRect( Rect rect );
/* set the current cliprectangle to be equal to rect */
Rect far * CaGetClipRect( void );
/* return the current cached clip rectangle */
void CaNonRectangularClip( void );
/* notify cache that a non-rectangular clipping region was set */
void CaSaveDC( void );
/* save the current device context - used to set up clipping rects */
void CaRestoreDC( void );
/* restore the device context and invalidate cached attributes */
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