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annotate CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/X11/Xregion.h @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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jpayne@69 1 /************************************************************************
jpayne@69 2
jpayne@69 3 Copyright 1987, 1998 The Open Group
jpayne@69 4
jpayne@69 5 Permission to use, copy, modify, distribute, and sell this software and its
jpayne@69 6 documentation for any purpose is hereby granted without fee, provided that
jpayne@69 7 the above copyright notice appear in all copies and that both that
jpayne@69 8 copyright notice and this permission notice appear in supporting
jpayne@69 9 documentation.
jpayne@69 10
jpayne@69 11 The above copyright notice and this permission notice shall be included in
jpayne@69 12 all copies or substantial portions of the Software.
jpayne@69 13
jpayne@69 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jpayne@69 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jpayne@69 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jpayne@69 17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
jpayne@69 18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
jpayne@69 19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
jpayne@69 20
jpayne@69 21 Except as contained in this notice, the name of The Open Group shall not be
jpayne@69 22 used in advertising or otherwise to promote the sale, use or other dealings
jpayne@69 23 in this Software without prior written authorization from The Open Group.
jpayne@69 24
jpayne@69 25
jpayne@69 26 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
jpayne@69 27
jpayne@69 28 All Rights Reserved
jpayne@69 29
jpayne@69 30 Permission to use, copy, modify, and distribute this software and its
jpayne@69 31 documentation for any purpose and without fee is hereby granted,
jpayne@69 32 provided that the above copyright notice appear in all copies and that
jpayne@69 33 both that copyright notice and this permission notice appear in
jpayne@69 34 supporting documentation, and that the name of Digital not be
jpayne@69 35 used in advertising or publicity pertaining to distribution of the
jpayne@69 36 software without specific, written prior permission.
jpayne@69 37
jpayne@69 38 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
jpayne@69 39 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
jpayne@69 40 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
jpayne@69 41 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
jpayne@69 42 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
jpayne@69 43 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
jpayne@69 44 SOFTWARE.
jpayne@69 45
jpayne@69 46 ************************************************************************/
jpayne@69 47
jpayne@69 48 #ifndef _X11_XREGION_H_
jpayne@69 49 #define _X11_XREGION_H_
jpayne@69 50
jpayne@69 51 typedef struct {
jpayne@69 52 short x1, x2, y1, y2;
jpayne@69 53 } Box, BOX, BoxRec, *BoxPtr;
jpayne@69 54
jpayne@69 55 typedef struct {
jpayne@69 56 short x, y, width, height;
jpayne@69 57 }RECTANGLE, RectangleRec, *RectanglePtr;
jpayne@69 58
jpayne@69 59 #define TRUE 1
jpayne@69 60 #define FALSE 0
jpayne@69 61 #define MAXSHORT 32767
jpayne@69 62 #define MINSHORT -MAXSHORT
jpayne@69 63 #ifndef MAX
jpayne@69 64 #define MAX(a,b) (((a) > (b)) ? (a) : (b))
jpayne@69 65 #endif
jpayne@69 66 #ifndef MIN
jpayne@69 67 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
jpayne@69 68 #endif
jpayne@69 69
jpayne@69 70
jpayne@69 71 /*
jpayne@69 72 * clip region
jpayne@69 73 */
jpayne@69 74
jpayne@69 75 typedef struct _XRegion {
jpayne@69 76 long size;
jpayne@69 77 long numRects;
jpayne@69 78 BOX *rects;
jpayne@69 79 BOX extents;
jpayne@69 80 } REGION;
jpayne@69 81
jpayne@69 82 /* Xutil.h contains the declaration:
jpayne@69 83 * typedef struct _XRegion *Region;
jpayne@69 84 */
jpayne@69 85
jpayne@69 86 /* 1 if two BOXs overlap.
jpayne@69 87 * 0 if two BOXs do not overlap.
jpayne@69 88 * Remember, x2 and y2 are not in the region
jpayne@69 89 */
jpayne@69 90 #define EXTENTCHECK(r1, r2) \
jpayne@69 91 ((r1)->x2 > (r2)->x1 && \
jpayne@69 92 (r1)->x1 < (r2)->x2 && \
jpayne@69 93 (r1)->y2 > (r2)->y1 && \
jpayne@69 94 (r1)->y1 < (r2)->y2)
jpayne@69 95
jpayne@69 96 /*
jpayne@69 97 * update region extents
jpayne@69 98 */
jpayne@69 99 #define EXTENTS(r,idRect){\
jpayne@69 100 if((r)->x1 < (idRect)->extents.x1)\
jpayne@69 101 (idRect)->extents.x1 = (r)->x1;\
jpayne@69 102 if((r)->y1 < (idRect)->extents.y1)\
jpayne@69 103 (idRect)->extents.y1 = (r)->y1;\
jpayne@69 104 if((r)->x2 > (idRect)->extents.x2)\
jpayne@69 105 (idRect)->extents.x2 = (r)->x2;\
jpayne@69 106 if((r)->y2 > (idRect)->extents.y2)\
jpayne@69 107 (idRect)->extents.y2 = (r)->y2;\
jpayne@69 108 }
jpayne@69 109
jpayne@69 110 /*
jpayne@69 111 * Check to see if there is enough memory in the present region.
jpayne@69 112 */
jpayne@69 113 #define MEMCHECK(reg, rect, firstrect){\
jpayne@69 114 if ((reg)->numRects >= ((reg)->size - 1)){\
jpayne@69 115 BoxPtr tmpRect = Xrealloc ((firstrect), \
jpayne@69 116 (2 * (sizeof(BOX)) * ((reg)->size))); \
jpayne@69 117 if (tmpRect == NULL) \
jpayne@69 118 return(0);\
jpayne@69 119 (firstrect) = tmpRect; \
jpayne@69 120 (reg)->size *= 2;\
jpayne@69 121 (rect) = &(firstrect)[(reg)->numRects];\
jpayne@69 122 }\
jpayne@69 123 }
jpayne@69 124
jpayne@69 125 /* this routine checks to see if the previous rectangle is the same
jpayne@69 126 * or subsumes the new rectangle to add.
jpayne@69 127 */
jpayne@69 128
jpayne@69 129 #define CHECK_PREVIOUS(Reg, R, Rx1, Ry1, Rx2, Ry2)\
jpayne@69 130 (!(((Reg)->numRects > 0)&&\
jpayne@69 131 ((R-1)->y1 == (Ry1)) &&\
jpayne@69 132 ((R-1)->y2 == (Ry2)) &&\
jpayne@69 133 ((R-1)->x1 <= (Rx1)) &&\
jpayne@69 134 ((R-1)->x2 >= (Rx2))))
jpayne@69 135
jpayne@69 136 /* add a rectangle to the given Region */
jpayne@69 137 #define ADDRECT(reg, r, rx1, ry1, rx2, ry2){\
jpayne@69 138 if (((rx1) < (rx2)) && ((ry1) < (ry2)) &&\
jpayne@69 139 CHECK_PREVIOUS((reg), (r), (rx1), (ry1), (rx2), (ry2))){\
jpayne@69 140 (r)->x1 = (rx1);\
jpayne@69 141 (r)->y1 = (ry1);\
jpayne@69 142 (r)->x2 = (rx2);\
jpayne@69 143 (r)->y2 = (ry2);\
jpayne@69 144 EXTENTS((r), (reg));\
jpayne@69 145 (reg)->numRects++;\
jpayne@69 146 (r)++;\
jpayne@69 147 }\
jpayne@69 148 }
jpayne@69 149
jpayne@69 150
jpayne@69 151
jpayne@69 152 /* add a rectangle to the given Region */
jpayne@69 153 #define ADDRECTNOX(reg, r, rx1, ry1, rx2, ry2){\
jpayne@69 154 if ((rx1 < rx2) && (ry1 < ry2) &&\
jpayne@69 155 CHECK_PREVIOUS((reg), (r), (rx1), (ry1), (rx2), (ry2))){\
jpayne@69 156 (r)->x1 = (rx1);\
jpayne@69 157 (r)->y1 = (ry1);\
jpayne@69 158 (r)->x2 = (rx2);\
jpayne@69 159 (r)->y2 = (ry2);\
jpayne@69 160 (reg)->numRects++;\
jpayne@69 161 (r)++;\
jpayne@69 162 }\
jpayne@69 163 }
jpayne@69 164
jpayne@69 165 #define EMPTY_REGION(pReg) pReg->numRects = 0
jpayne@69 166
jpayne@69 167 #define REGION_NOT_EMPTY(pReg) pReg->numRects
jpayne@69 168
jpayne@69 169 #define INBOX(r, x, y) \
jpayne@69 170 ( ( ((r).x2 > x)) && \
jpayne@69 171 ( ((r).x1 <= x)) && \
jpayne@69 172 ( ((r).y2 > y)) && \
jpayne@69 173 ( ((r).y1 <= y)) )
jpayne@69 174
jpayne@69 175 /*
jpayne@69 176 * number of points to buffer before sending them off
jpayne@69 177 * to scanlines() : Must be an even number
jpayne@69 178 */
jpayne@69 179 #define NUMPTSTOBUFFER 200
jpayne@69 180
jpayne@69 181 /*
jpayne@69 182 * used to allocate buffers for points and link
jpayne@69 183 * the buffers together
jpayne@69 184 */
jpayne@69 185 typedef struct _POINTBLOCK {
jpayne@69 186 XPoint pts[NUMPTSTOBUFFER];
jpayne@69 187 struct _POINTBLOCK *next;
jpayne@69 188 } POINTBLOCK;
jpayne@69 189
jpayne@69 190 #endif /* _X11_XREGION_H_ */