San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | #ifndef SRAREGION_H |
| 2 | #define SRAREGION_H |
| 3 | |
| 4 | /* -=- SRA - Simple Region Algorithm |
| 5 | * A simple rectangular region implementation. |
| 6 | * Copyright (c) 2001 James "Wez" Weatherall, Johannes E. Schindelin |
| 7 | */ |
| 8 | |
| 9 | /* -=- sraRect */ |
| 10 | |
| 11 | typedef struct _rect { |
| 12 | int x1; |
| 13 | int y1; |
| 14 | int x2; |
| 15 | int y2; |
| 16 | } sraRect; |
| 17 | |
| 18 | typedef struct sraRegion sraRegion; |
| 19 | |
| 20 | /* -=- Region manipulation functions */ |
| 21 | |
| 22 | extern sraRegion *sraRgnCreate(); |
| 23 | extern sraRegion *sraRgnCreateRect(int x1, int y1, int x2, int y2); |
| 24 | extern sraRegion *sraRgnCreateRgn(const sraRegion *src); |
| 25 | |
| 26 | extern void sraRgnDestroy(sraRegion *rgn); |
| 27 | extern void sraRgnMakeEmpty(sraRegion *rgn); |
| 28 | extern rfbBool sraRgnAnd(sraRegion *dst, const sraRegion *src); |
| 29 | extern void sraRgnOr(sraRegion *dst, const sraRegion *src); |
| 30 | extern rfbBool sraRgnSubtract(sraRegion *dst, const sraRegion *src); |
| 31 | |
| 32 | extern void sraRgnOffset(sraRegion *dst, int dx, int dy); |
| 33 | |
| 34 | extern rfbBool sraRgnPopRect(sraRegion *region, sraRect *rect, |
| 35 | unsigned long flags); |
| 36 | |
| 37 | extern unsigned long sraRgnCountRects(const sraRegion *rgn); |
| 38 | extern rfbBool sraRgnEmpty(const sraRegion *rgn); |
| 39 | |
| 40 | extern sraRegion *sraRgnBBox(const sraRegion *src); |
| 41 | |
| 42 | /* -=- rectangle iterator */ |
| 43 | |
| 44 | typedef struct sraRectangleIterator { |
| 45 | rfbBool reverseX,reverseY; |
| 46 | int ptrSize,ptrPos; |
| 47 | struct sraSpan** sPtrs; |
| 48 | } sraRectangleIterator; |
| 49 | |
| 50 | extern sraRectangleIterator *sraRgnGetIterator(sraRegion *s); |
| 51 | extern sraRectangleIterator *sraRgnGetReverseIterator(sraRegion *s,rfbBool reverseX,rfbBool reverseY); |
| 52 | extern rfbBool sraRgnIteratorNext(sraRectangleIterator *i,sraRect *r); |
| 53 | extern void sraRgnReleaseIterator(sraRectangleIterator *i); |
| 54 | |
| 55 | void sraRgnPrint(const sraRegion *s); |
| 56 | |
| 57 | /* -=- Rectangle clipper (for speed) */ |
| 58 | |
| 59 | extern rfbBool sraClipRect(int *x, int *y, int *w, int *h, |
| 60 | int cx, int cy, int cw, int ch); |
| 61 | |
| 62 | extern rfbBool sraClipRect2(int *x, int *y, int *x2, int *y2, |
| 63 | int cx, int cy, int cx2, int cy2); |
| 64 | |
| 65 | #endif |