1/***********************************************************
2
3Copyright 1987, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
26
27                        All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Digital not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45******************************************************************/
46#ifdef HAVE_DIX_CONFIG_H
47#include <dix-config.h>
48#endif
49
50#include <X11/X.h>
51#include <X11/Xprotostr.h>
52#include "regionstr.h"
53#include "gcstruct.h"
54#include "pixmap.h"
55#include "mi.h"
56
57void
58miPolyRectangle(DrawablePtr pDraw, GCPtr pGC, int nrects, xRectangle *pRects)
59{
60    int i;
61    xRectangle *pR = pRects;
62    DDXPointRec rect[5];
63    int bound_tmp;
64
65#define MINBOUND(dst,eqn)	bound_tmp = eqn; \
66				if (bound_tmp < -32768) \
67				    bound_tmp = -32768; \
68				dst = bound_tmp;
69
70#define MAXBOUND(dst,eqn)	bound_tmp = eqn; \
71				if (bound_tmp > 32767) \
72				    bound_tmp = 32767; \
73				dst = bound_tmp;
74
75#define MAXUBOUND(dst,eqn)	bound_tmp = eqn; \
76				if (bound_tmp > 65535) \
77				    bound_tmp = 65535; \
78				dst = bound_tmp;
79
80    if (pGC->lineStyle == LineSolid && pGC->joinStyle == JoinMiter &&
81        pGC->lineWidth != 0) {
82        xRectangle *tmp, *t;
83        int ntmp;
84        int offset1, offset2, offset3;
85        int x, y, width, height;
86
87        ntmp = (nrects << 2);
88        offset2 = pGC->lineWidth;
89        offset1 = offset2 >> 1;
90        offset3 = offset2 - offset1;
91        tmp = xallocarray(ntmp, sizeof(xRectangle));
92        if (!tmp)
93            return;
94        t = tmp;
95        for (i = 0; i < nrects; i++) {
96            x = pR->x;
97            y = pR->y;
98            width = pR->width;
99            height = pR->height;
100            pR++;
101            if (width == 0 && height == 0) {
102                rect[0].x = x;
103                rect[0].y = y;
104                rect[1].x = x;
105                rect[1].y = y;
106                (*pGC->ops->Polylines) (pDraw, pGC, CoordModeOrigin, 2, rect);
107            }
108            else if (height < offset2 || width < offset1) {
109                if (height == 0) {
110                    t->x = x;
111                    t->width = width;
112                }
113                else {
114                    MINBOUND(t->x, x - offset1)
115                        MAXUBOUND(t->width, width + offset2)
116                }
117                if (width == 0) {
118                    t->y = y;
119                    t->height = height;
120                }
121                else {
122                    MINBOUND(t->y, y - offset1)
123                        MAXUBOUND(t->height, height + offset2)
124                }
125                t++;
126            }
127            else {
128                MINBOUND(t->x, x - offset1)
129                    MINBOUND(t->y, y - offset1)
130                    MAXUBOUND(t->width, width + offset2)
131                    t->height = offset2;
132                t++;
133                MINBOUND(t->x, x - offset1)
134                    MAXBOUND(t->y, y + offset3);
135                t->width = offset2;
136                t->height = height - offset2;
137                t++;
138                MAXBOUND(t->x, x + width - offset1);
139                MAXBOUND(t->y, y + offset3)
140                    t->width = offset2;
141                t->height = height - offset2;
142                t++;
143                MINBOUND(t->x, x - offset1)
144                    MAXBOUND(t->y, y + height - offset1)
145                    MAXUBOUND(t->width, width + offset2)
146                    t->height = offset2;
147                t++;
148            }
149        }
150        (*pGC->ops->PolyFillRect) (pDraw, pGC, t - tmp, tmp);
151        free((void *) tmp);
152    }
153    else {
154
155        for (i = 0; i < nrects; i++) {
156            rect[0].x = pR->x;
157            rect[0].y = pR->y;
158
159            MAXBOUND(rect[1].x, pR->x + (int) pR->width)
160                rect[1].y = rect[0].y;
161
162            rect[2].x = rect[1].x;
163            MAXBOUND(rect[2].y, pR->y + (int) pR->height);
164
165            rect[3].x = rect[0].x;
166            rect[3].y = rect[2].y;
167
168            rect[4].x = rect[0].x;
169            rect[4].y = rect[0].y;
170
171            (*pGC->ops->Polylines) (pDraw, pGC, CoordModeOrigin, 5, rect);
172            pR++;
173        }
174    }
175}
176