1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/* Copyright (c) 2008, 2009
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Micah Cowan (micah@cowan.name)
* Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
* Copyright (c) 1993-2002, 2003, 2005, 2006, 2007
* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
* Copyright (c) 1987 Oliver Laumann
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING); if not, see
* https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
****************************************************************
*/
#include "config.h"
#include "screen.h"
#include "extern.h"
#include "viewport.h"
extern struct display *display;
int RethinkDisplayViewports() {
struct canvas *cv;
struct viewport *vp, *vpn;
/* free old viewports */
for (cv = display->d_cvlist; cv; cv = cv->c_next) {
for (vp = cv->c_vplist; vp; vp = vpn) {
vp->v_canvas = 0;
vpn = vp->v_next;
bzero((char *)vp, sizeof(*vp));
free(vp);
}
cv->c_vplist = 0;
}
display->d_vpxmin = -1;
display->d_vpxmax = -1;
for (cv = display->d_cvlist; cv; cv = cv->c_next) {
if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
return -1;
#ifdef HOLE
vp->v_canvas = cv;
vp->v_xs = cv->c_xs;
vp->v_ys = (cv->c_ys + cv->c_ye) / 2;
vp->v_xe = cv->c_xe;
vp->v_ye = cv->c_ye;
vp->v_xoff = cv->c_xoff;
vp->v_yoff = cv->c_yoff;
vp->v_next = cv->c_vplist;
cv->c_vplist = vp;
if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
return -1;
vp->v_canvas = cv;
vp->v_xs = (cv->c_xs + cv->c_xe) / 2;
vp->v_ys = (3 * cv->c_ys + cv->c_ye) / 4;
vp->v_xe = cv->c_xe;
vp->v_ye = (cv->c_ys + cv->c_ye) / 2 - 1;
vp->v_xoff = cv->c_xoff;
vp->v_yoff = cv->c_yoff;
vp->v_next = cv->c_vplist;
cv->c_vplist = vp;
if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
return -1;
vp->v_canvas = cv;
vp->v_xs = cv->c_xs;
vp->v_ys = (3 * cv->c_ys + cv->c_ye) / 4;
vp->v_xe = (3 * cv->c_xs + cv->c_xe) / 4 - 1;
vp->v_ye = (cv->c_ys + cv->c_ye) / 2 - 1;
vp->v_xoff = cv->c_xoff;
vp->v_yoff = cv->c_yoff;
vp->v_next = cv->c_vplist;
cv->c_vplist = vp;
if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
return -1;
vp->v_canvas = cv;
vp->v_xs = cv->c_xs;
vp->v_ys = cv->c_ys;
vp->v_xe = cv->c_xe;
vp->v_ye = (3 * cv->c_ys + cv->c_ye) / 4 - 1;
vp->v_xoff = cv->c_xoff;
vp->v_yoff = cv->c_yoff;
vp->v_next = cv->c_vplist;
cv->c_vplist = vp;
#else
vp->v_canvas = cv;
vp->v_xs = cv->c_xs;
vp->v_ys = cv->c_ys;
vp->v_xe = cv->c_xe;
vp->v_ye = cv->c_ye;
vp->v_xoff = cv->c_xoff;
vp->v_yoff = cv->c_yoff;
vp->v_next = cv->c_vplist;
cv->c_vplist = vp;
#endif
if (cv->c_xs < display->d_vpxmin || display->d_vpxmin == -1)
display->d_vpxmin = cv->c_xs;
if (cv->c_xe > display->d_vpxmax || display->d_vpxmax == -1)
display->d_vpxmax = cv->c_xe;
}
return 0;
}
void RethinkViewportOffsets(struct canvas *cv)
{
struct viewport *vp;
for (vp = cv->c_vplist; vp; vp = vp->v_next) {
vp->v_xoff = cv->c_xoff;
vp->v_yoff = cv->c_yoff;
}
}
|
