1 /*
2 Ming, an SWF output library
3 Copyright (C) 2002 Opaque Industries - http://www.opaque.net/
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 /* $Id$ */
21
22 #include <stdlib.h>
23
24 #include "rect.h"
25 #include "libming.h"
26
27 int
SWFRect_numBits(SWFRect rect)28 SWFRect_numBits(SWFRect rect)
29 {
30 return 5 + 4*max(max(SWFOutput_numSBits(rect->minX),
31 SWFOutput_numSBits(rect->maxX)),
32 max(SWFOutput_numSBits(rect->minY),
33 SWFOutput_numSBits(rect->maxY)));
34 }
35
36
37 void
SWFOutput_writeRect(SWFOutput out,SWFRect rect)38 SWFOutput_writeRect(SWFOutput out, SWFRect rect)
39 {
40 int nBits = max(max(SWFOutput_numSBits(rect->minX),
41 SWFOutput_numSBits(rect->maxX)),
42 max(SWFOutput_numSBits(rect->minY),
43 SWFOutput_numSBits(rect->maxY)));
44
45 if(nBits>=32)
46 SWF_error("SWFRect too large for file format");
47
48 SWFOutput_writeBits(out, nBits, 5);
49 SWFOutput_writeSBits(out, rect->minX, nBits);
50 SWFOutput_writeSBits(out, rect->maxX, nBits);
51 SWFOutput_writeSBits(out, rect->minY, nBits);
52 SWFOutput_writeSBits(out, rect->maxY, nBits);
53 SWFOutput_byteAlign(out);
54 }
55
56
57 void
destroySWFRect(SWFRect rect)58 destroySWFRect(SWFRect rect)
59 {
60 free(rect);
61 }
62
63
64 SWFRect
newSWFRect(int minX,int maxX,int minY,int maxY)65 newSWFRect(int minX, int maxX, int minY, int maxY)
66 {
67 SWFRect rect = (SWFRect)malloc(sizeof(struct SWFRect_s));
68
69 /* If malloc failed, return NULL to signify this */
70 if (NULL == rect)
71 return NULL;
72
73 rect->minX = min(minX, maxX);
74 rect->maxX = max(minX, maxX);
75 rect->minY = min(minY, maxY);
76 rect->maxY = max(minY, maxY);
77
78 return rect;
79 }
80
81
82 int
SWFRect_getWidth(SWFRect r)83 SWFRect_getWidth(SWFRect r)
84 {
85 return r->maxX - r->minX;
86 }
87
88
89 int
SWFRect_getHeight(SWFRect r)90 SWFRect_getHeight(SWFRect r)
91 {
92 return r->maxY - r->minY;
93 }
94
95
96 void
SWFRect_getBounds(SWFRect rect,int * minX,int * maxX,int * minY,int * maxY)97 SWFRect_getBounds(SWFRect rect, int *minX, int *maxX, int *minY, int *maxY)
98 {
99 *minX = rect->minX;
100 *maxX = rect->maxX;
101 *minY = rect->minY;
102 *maxY = rect->maxY;
103 }
104
105
106 void
SWFRect_setBounds(SWFRect rect,int minX,int maxX,int minY,int maxY)107 SWFRect_setBounds(SWFRect rect, int minX, int maxX, int minY, int maxY)
108 {
109 rect->minX = minX;
110 rect->maxX = maxX;
111 rect->minY = minY;
112 rect->maxY = maxY;
113 }
114
115
116 SWFRect
SWFRect_copy(SWFRect rect)117 SWFRect_copy(SWFRect rect)
118 {
119 return newSWFRect(rect->minX, rect->maxX, rect->minY, rect->maxY);
120 }
121
122
123 void
SWFRect_includeRect(SWFRect a,SWFRect b)124 SWFRect_includeRect(SWFRect a, SWFRect b)
125 {
126 if ( b->minX < a->minX )
127 a->minX = b->minX;
128
129 if ( b->maxX > a->maxX )
130 a->maxX = b->maxX;
131
132 if ( b->minX < a->minX )
133 a->minX = b->minX;
134
135 if ( b->maxX > a->maxX )
136 a->maxX = b->maxX;
137 }
138
139
140 /* make rect big enough to include (x,y) + width extra */
141 void
SWFRect_includePoint(SWFRect rect,int x,int y,int width)142 SWFRect_includePoint(SWFRect rect, int x, int y, int width)
143 {
144 if ( x-width-1 < rect->minX )
145 rect->minX = x-width;
146
147 if ( x+width > rect->maxX )
148 rect->maxX = x+width;
149
150 if ( y-width-1 < rect->minY )
151 rect->minY = y-width;
152
153 if ( y+width > rect->maxY )
154 rect->maxY = y+width;
155 }
156
157
158 /*
159 * Local variables:
160 * tab-width: 2
161 * c-basic-offset: 2
162 * End:
163 */
164