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/********************************************************************** 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 _X11_XREGION_H_ #define _X11_XREGION_H_ typedef struct { short x1, x2, y1, y2; } Box, BOX, BoxRec, BoxPtr; typedef struct { short x, y, width, height; }RECTANGLE, RectangleRec, RectanglePtr; #define TRUE 1 #define FALSE 0 #define MAXSHORT 32767 #define MINSHORT -MAXSHORT #ifndef MAX #define MAX(a,b) (((a) > (b)) ? (a) : (b)) #endif #ifndef MIN #define MIN(a,b) (((a) < (b)) ? (a) : (b)) #endif / * clip region / typedef struct _XRegion { long size; long numRects; BOX rects; BOX extents; } REGION; /* Xutil.h contains the declaration: * typedef struct _XRegion Region; / /* 1 if two BOXs overlap. * 0 if two BOXs do not overlap. * Remember, x2 and y2 are not in the region / #define EXTENTCHECK(r1, r2) \ ((r1)->x2 > (r2)->x1 && \ (r1)->x1 < (r2)->x2 && \ (r1)->y2 > (r2)->y1 && \ (r1)->y1 < (r2)->y2) / * update region extents / #define EXTENTS(r,idRect){\ if((r)->x1 < (idRect)->extents.x1)\ (idRect)->extents.x1 = (r)->x1;\ if((r)->y1 < (idRect)->extents.y1)\ (idRect)->extents.y1 = (r)->y1;\ if((r)->x2 > (idRect)->extents.x2)\ (idRect)->extents.x2 = (r)->x2;\ if((r)->y2 > (idRect)->extents.y2)\ (idRect)->extents.y2 = (r)->y2;\ } / * Check to see if there is enough memory in the present region. / #define MEMCHECK(reg, rect, firstrect){\ if ((reg)->numRects >= ((reg)->size - 1)){\ BoxPtr tmpRect = Xrealloc ((firstrect), \ (2 (sizeof(BOX)) * ((reg)->size))); \ if (tmpRect == NULL) \ return(0);\ (firstrect) = tmpRect; \ (reg)->size = 2;\ (rect) = &(firstrect)[(reg)->numRects];\ }\ } / this routine checks to see if the previous rectangle is the same * or subsumes the new rectangle to add. / #define CHECK_PREVIOUS(Reg, R, Rx1, Ry1, Rx2, Ry2)\ (!(((Reg)->numRects > 0)&&\ ((R-1)->y1 == (Ry1)) &&\ ((R-1)->y2 == (Ry2)) &&\ ((R-1)->x1 <= (Rx1)) &&\ ((R-1)->x2 >= (Rx2)))) / add a rectangle to the given Region / #define ADDRECT(reg, r, rx1, ry1, rx2, ry2){\ if (((rx1) < (rx2)) && ((ry1) < (ry2)) &&\ CHECK_PREVIOUS((reg), (r), (rx1), (ry1), (rx2), (ry2))){\ (r)->x1 = (rx1);\ (r)->y1 = (ry1);\ (r)->x2 = (rx2);\ (r)->y2 = (ry2);\ EXTENTS((r), (reg));\ (reg)->numRects++;\ (r)++;\ }\ } / add a rectangle to the given Region / #define ADDRECTNOX(reg, r, rx1, ry1, rx2, ry2){\ if ((rx1 < rx2) && (ry1 < ry2) &&\ CHECK_PREVIOUS((reg), (r), (rx1), (ry1), (rx2), (ry2))){\ (r)->x1 = (rx1);\ (r)->y1 = (ry1);\ (r)->x2 = (rx2);\ (r)->y2 = (ry2);\ (reg)->numRects++;\ (r)++;\ }\ } #define EMPTY_REGION(pReg) pReg->numRects = 0 #define REGION_NOT_EMPTY(pReg) pReg->numRects #define INBOX(r, x, y) \ ( ( ((r).x2 > x)) && \ ( ((r).x1 <= x)) && \ ( ((r).y2 > y)) && \ ( ((r).y1 <= y)) ) / * number of points to buffer before sending them off * to scanlines() : Must be an even number / #define NUMPTSTOBUFFER 200 / * used to allocate buffers for points and link * the buffers together / typedef struct _POINTBLOCK { XPoint pts[NUMPTSTOBUFFER]; struct _POINTBLOCK next; } POINTBLOCK; #endif /* _X11_XREGION_H_ */

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