Imported Upstream version 1.15.1
[deb_xorg-server.git] / mi / mipolyrect.c
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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 = malloc(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((pointer) 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}