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+/* $Xorg: regionstr.h,v 1.4 2001/02/09 02:05:15 xorgcvs Exp $ */
+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+#ifndef REGIONSTRUCT_H
+#define REGIONSTRUCT_H
+
+#include "miscstruct.h"
+
+/* Return values from RectIn() */
+
+#define rgnOUT 0
+#define rgnIN 1
+#define rgnPART 2
+
+#define NullRegion ((RegionPtr)0)
+
+/*
+ * clip region
+ */
+
+typedef struct _RegData {
+ long size;
+ long numRects;
+/* BoxRec rects[size]; in memory but not explicitly declared */
+} RegDataRec, *RegDataPtr;
+
+typedef struct _Region {
+ BoxRec extents;
+ RegDataPtr data;
+} RegionRec, *RegionPtr;
+
+extern BoxRec miEmptyBox;
+extern RegDataRec miEmptyData;
+
+#define REGION_NIL(reg) ((reg)->data && !(reg)->data->numRects)
+#define REGION_NUM_RECTS(reg) ((reg)->data ? (reg)->data->numRects : 1)
+#define REGION_SIZE(reg) ((reg)->data ? (reg)->data->size : 0)
+#define REGION_RECTS(reg) ((reg)->data ? (BoxPtr)((reg)->data + 1) \
+ : &(reg)->extents)
+#define REGION_BOXPTR(reg) ((BoxPtr)((reg)->data + 1))
+#define REGION_BOX(reg,i) (&REGION_BOXPTR(reg)[i])
+#define REGION_TOP(reg) REGION_BOX(reg, (reg)->data->numRects)
+#define REGION_END(reg) REGION_BOX(reg, (reg)->data->numRects - 1)
+#define REGION_SZOF(n) (sizeof(RegDataRec) + ((n) * sizeof(BoxRec)))
+
+#ifdef NEED_SCREEN_REGIONS
+
+#define REGION_CREATE(_pScreen, _rect, _size) \
+ (*(_pScreen)->RegionCreate)(_rect, _size)
+
+#define REGION_INIT(_pScreen, _pReg, _rect, _size) \
+ (*(_pScreen)->RegionInit)(_pReg, _rect, _size)
+
+#define REGION_COPY(_pScreen, dst, src) \
+ (*(_pScreen)->RegionCopy)(dst, src)
+
+#define REGION_DESTROY(_pScreen, _pReg) \
+ (*(_pScreen)->RegionDestroy)(_pReg)
+
+#define REGION_UNINIT(_pScreen, _pReg) \
+ (*(_pScreen)->RegionUninit)(_pReg)
+
+#define REGION_INTERSECT(_pScreen, newReg, reg1, reg2) \
+ (*(_pScreen)->Intersect)(newReg, reg1, reg2)
+
+#define REGION_UNION(_pScreen, newReg, reg1, reg2) \
+ (*(_pScreen)->Union)(newReg, reg1, reg2)
+
+#define REGION_SUBTRACT(_pScreen, newReg, reg1, reg2) \
+ (*(_pScreen)->Subtract)(newReg, reg1, reg2)
+
+#define REGION_INVERSE(_pScreen, newReg, reg1, invRect) \
+ (*(_pScreen)->Inverse)(newReg, reg1, invRect)
+
+#define REGION_RESET(_pScreen, _pReg, _pBox) \
+ (*(_pScreen)->RegionReset)(_pReg, _pBox)
+
+#define REGION_TRANSLATE(_pScreen, _pReg, _x, _y) \
+ (*(_pScreen)->TranslateRegion)(_pReg, _x, _y)
+
+#define RECT_IN_REGION(_pScreen, _pReg, prect) \
+ (*(_pScreen)->RectIn)(_pReg, prect)
+
+#define POINT_IN_REGION(_pScreen, _pReg, _x, _y, prect) \
+ (*(_pScreen)->PointInRegion)(_pReg, _x, _y, prect)
+
+#define REGION_NOTEMPTY(_pScreen, _pReg) \
+ (*(_pScreen)->RegionNotEmpty)(_pReg)
+
+#define REGION_EMPTY(_pScreen, _pReg) \
+ (*(_pScreen)->RegionEmpty)(_pReg)
+
+#define REGION_EXTENTS(_pScreen, _pReg) \
+ (*(_pScreen)->RegionExtents)(_pReg)
+
+#define REGION_APPEND(_pScreen, dstrgn, rgn) \
+ (*(_pScreen)->RegionAppend)(dstrgn, rgn)
+
+#define REGION_VALIDATE(_pScreen, badreg, pOverlap) \
+ (*(_pScreen)->RegionValidate)(badreg, pOverlap)
+
+#define BITMAP_TO_REGION(_pScreen, pPix) \
+ (*(_pScreen)->BitmapToRegion)(pPix)
+
+#define RECTS_TO_REGION(_pScreen, nrects, prect, ctype) \
+ (*(_pScreen)->RectsToRegion)(nrects, prect, ctype)
+
+#else /* !NEED_SCREEN_REGIONS */
+
+#define REGION_CREATE(_pScreen, _rect, _size) \
+ miRegionCreate(_rect, _size)
+
+#define REGION_COPY(_pScreen, dst, src) \
+ miRegionCopy(dst, src)
+
+#define REGION_DESTROY(_pScreen, _pReg) \
+ miRegionDestroy(_pReg)
+
+#define REGION_INTERSECT(_pScreen, newReg, reg1, reg2) \
+ miIntersect(newReg, reg1, reg2)
+
+#define REGION_UNION(_pScreen, newReg, reg1, reg2) \
+ miUnion(newReg, reg1, reg2)
+
+#define REGION_SUBTRACT(_pScreen, newReg, reg1, reg2) \
+ miSubtract(newReg, reg1, reg2)
+
+#define REGION_INVERSE(_pScreen, newReg, reg1, invRect) \
+ miInverse(newReg, reg1, invRect)
+
+#define REGION_TRANSLATE(_pScreen, _pReg, _x, _y) \
+ miTranslateRegion(_pReg, _x, _y)
+
+#define RECT_IN_REGION(_pScreen, _pReg, prect) \
+ miRectIn(_pReg, prect)
+
+#define POINT_IN_REGION(_pScreen, _pReg, _x, _y, prect) \
+ miPointInRegion(_pReg, _x, _y, prect)
+
+#define REGION_APPEND(_pScreen, dstrgn, rgn) \
+ miRegionAppend(dstrgn, rgn)
+
+#define REGION_VALIDATE(_pScreen, badreg, pOverlap) \
+ miRegionValidate(badreg, pOverlap)
+
+#define BITMAP_TO_REGION(_pScreen, pPix) \
+ (*(_pScreen)->BitmapToRegion)(pPix) /* no mi version?! */
+
+#define RECTS_TO_REGION(_pScreen, nrects, prect, ctype) \
+ miRectsToRegion(nrects, prect, ctype)
+
+#ifdef DONT_INLINE_REGION_OPS
+
+#define REGION_INIT(_pScreen, _pReg, _rect, _size) \
+ miRegionInit(_pReg, _rect, _size)
+
+#define REGION_UNINIT(_pScreen, _pReg) \
+ miRegionUninit(_pReg)
+
+#define REGION_RESET(_pScreen, _pReg, _pBox) \
+ miRegionReset(_pReg, _pBox)
+
+#define REGION_NOTEMPTY(_pScreen, _pReg) \
+ miRegionNotEmpty(_pReg)
+
+#define REGION_EMPTY(_pScreen, _pReg) \
+ miRegionEmpty(_pReg)
+
+#define REGION_EXTENTS(_pScreen, _pReg) \
+ miRegionExtents(_pReg)
+
+#else /* inline certain simple region ops for performance */
+
+#define REGION_INIT(_pScreen, _pReg, _rect, _size) \
+{ \
+ if (_rect) \
+ { \
+ (_pReg)->extents = *(_rect); \
+ (_pReg)->data = (RegDataPtr)NULL; \
+ } \
+ else \
+ { \
+ (_pReg)->extents = miEmptyBox; \
+ if (((_size) > 1) && ((_pReg)->data = \
+ (RegDataPtr)xalloc(REGION_SZOF(_size)))) \
+ { \
+ (_pReg)->data->size = (_size); \
+ (_pReg)->data->numRects = 0; \
+ } \
+ else \
+ (_pReg)->data = &miEmptyData; \
+ } \
+}
+
+#define REGION_UNINIT(_pScreen, _pReg) \
+{ \
+ if ((_pReg)->data && (_pReg)->data->size) xfree((_pReg)->data); \
+}
+
+#define REGION_RESET(_pScreen, _pReg, _pBox) \
+{ \
+ (_pReg)->extents = *(_pBox); \
+ REGION_UNINIT(_pScreen, _pReg); \
+ (_pReg)->data = (RegDataPtr)NULL; \
+}
+
+#define REGION_NOTEMPTY(_pScreen, _pReg) \
+ !REGION_NIL(_pReg)
+
+#define REGION_EMPTY(_pScreen, _pReg) \
+{ \
+ REGION_UNINIT(_pScreen, _pReg); \
+ (_pReg)->extents.x2 = (_pReg)->extents.x1; \
+ (_pReg)->extents.y2 = (_pReg)->extents.y1; \
+ (_pReg)->data = &miEmptyData; \
+}
+
+#define REGION_EXTENTS(_pScreen, _pReg) \
+ &(_pReg)->extents
+
+#endif /* DONT_INLINE_REGION_OPS */
+
+#endif /* NEED_SCREEN_REGIONS */
+
+/* moved from mi.h */
+
+extern RegionPtr miRegionCreate(
+#if NeedFunctionPrototypes
+ BoxPtr /*rect*/,
+ int /*size*/
+#endif
+);
+
+extern void miRegionInit(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/,
+ BoxPtr /*rect*/,
+ int /*size*/
+#endif
+);
+
+extern void miRegionDestroy(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/
+#endif
+);
+
+extern void miRegionUninit(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/
+#endif
+);
+
+extern Bool miRegionCopy(
+#if NeedFunctionPrototypes
+ RegionPtr /*dst*/,
+ RegionPtr /*src*/
+#endif
+);
+
+extern Bool miIntersect(
+#if NeedFunctionPrototypes
+ RegionPtr /*newReg*/,
+ RegionPtr /*reg1*/,
+ RegionPtr /*reg2*/
+#endif
+);
+
+extern Bool miUnion(
+#if NeedFunctionPrototypes
+ RegionPtr /*newReg*/,
+ RegionPtr /*reg1*/,
+ RegionPtr /*reg2*/
+#endif
+);
+
+extern Bool miRegionAppend(
+#if NeedFunctionPrototypes
+ RegionPtr /*dstrgn*/,
+ RegionPtr /*rgn*/
+#endif
+);
+
+extern Bool miRegionValidate(
+#if NeedFunctionPrototypes
+ RegionPtr /*badreg*/,
+ Bool * /*pOverlap*/
+#endif
+);
+
+extern RegionPtr miRectsToRegion(
+#if NeedFunctionPrototypes
+ int /*nrects*/,
+ xRectanglePtr /*prect*/,
+ int /*ctype*/
+#endif
+);
+
+extern Bool miSubtract(
+#if NeedFunctionPrototypes
+ RegionPtr /*regD*/,
+ RegionPtr /*regM*/,
+ RegionPtr /*regS*/
+#endif
+);
+
+extern Bool miInverse(
+#if NeedFunctionPrototypes
+ RegionPtr /*newReg*/,
+ RegionPtr /*reg1*/,
+ BoxPtr /*invRect*/
+#endif
+);
+
+extern int miRectIn(
+#if NeedFunctionPrototypes
+ RegionPtr /*region*/,
+ BoxPtr /*prect*/
+#endif
+);
+
+extern void miTranslateRegion(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/,
+ int /*x*/,
+ int /*y*/
+#endif
+);
+
+extern void miRegionReset(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/,
+ BoxPtr /*pBox*/
+#endif
+);
+
+extern Bool miPointInRegion(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/,
+ int /*x*/,
+ int /*y*/,
+ BoxPtr /*box*/
+#endif
+);
+
+extern Bool miRegionNotEmpty(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/
+#endif
+);
+
+extern void miRegionEmpty(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/
+#endif
+);
+
+extern BoxPtr miRegionExtents(
+#if NeedFunctionPrototypes
+ RegionPtr /*pReg*/
+#endif
+);
+
+#endif /* REGIONSTRUCT_H */
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