gtk/gdk/linux-fb/mispans.h
Matthias Clasen 6de551b504 Fix many sparse warnings. (#157253, Kjartan Maraas.
2004-11-10  Matthias Clasen  <mclasen@redhat.com>

	* gdk/linux-fb/*: Fix many sparse warnings.  (#157253,
	Kjartan Maraas.
2004-11-10 13:30:55 +00:00

88 lines
3.6 KiB
C

/***********************************************************
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in this Software without prior written authorization from The Open Group.
Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
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******************************************************************/
/* $TOG: mispans.h /main/5 1998/02/09 14:48:48 kaleb $ */
typedef struct {
int count; /* number of spans */
GdkSpan* points; /* pointer to list of start points */
} Spans;
typedef struct {
int size; /* Total number of *Spans allocated */
int count; /* Number of *Spans actually in group */
Spans *group; /* List of Spans */
int ymin, ymax; /* Min, max y values encountered */
} SpanGroup;
/* Initialize SpanGroup. MUST BE DONE before use. */
extern void miInitSpanGroup(SpanGroup *spanGroup);
/* Add a Spans to a SpanGroup. The spans MUST BE in y-sorted order */
extern void miAppendSpans(SpanGroup *spanGroup, SpanGroup *otherGroup,
Spans *spans);
/* Paint a span group, possibly with some overlap */
extern void miFillSpanGroup(GdkDrawable* pDraw, GdkGC* pGC,
SpanGroup *spanGroup);
/* Paint a span group, insuring that each pixel is painted at most once */
extern void miFillUniqueSpanGroup(GdkDrawable* pDraw, GdkGC* pGC,
SpanGroup *spanGroup);
/* Free up data in a span group. MUST BE DONE or you'll suffer memory leaks */
extern void miFreeSpanGroup(SpanGroup *spanGroup);
extern void miSubtractSpans(SpanGroup *spanGroup, Spans *sub);
extern void miDisposeSpanGroup(SpanGroup *spanGroup);
extern int miClipSpans(GdkRegion* prgnDst, GdkPoint* ppt,
int *pwidth, int nspans, GdkPoint* pptNew,
int *pwidthNew, int fSorted);
/* Rops which must use span groups */
#define miSpansCarefulRop(rop) (((rop) & 0xc) == 0x8 || ((rop) & 0x3) == 0x2)
#define miSpansEasyRop(rop) (!miSpansCarefulRop(rop))