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comparison src/video/ataricommon/SDL_xbiosmouseevents.c @ 281:c5010ab8ba35

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Added initial support for Atari (thanks Patrice!)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 17 Feb 2002 19:54:28 +0000
parents
children f6ffac90895c
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280:0ddcea45d829 281:c5010ab8ba35
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 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 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 /*
29 * IKBD 6301 mouse vector
30 *
31 * Patrice Mandin
32 */
33
34 #include <stdlib.h>
35 #include <string.h>
36 #include <mint/osbind.h>
37
38 #include "SDL_events_c.h"
39 #include "SDL_xbiosmouseinterrupt_s.h"
40
41 static _KBDVECS *kbdvecs; /* Pointer to access vectors */
42 static _KBDVECS sys_kbdvecs; /* Backup of system vectors */
43
44 /* Variables */
45
46 static Uint16 atari_prevmouseb; /* buttons */
47
48 void AtariXbios_InstallMouseVector(void)
49 {
50 void *oldpile;
51
52 /* Read IKBD vectors base */
53 kbdvecs=Kbdvbase();
54
55 /* Go to supervisor mode */
56 oldpile=(void *)Super(0);
57
58 /* Backup system vectors */
59 memcpy(&sys_kbdvecs, kbdvecs, sizeof(_KBDVECS));
60
61 /* Install our vector */
62 SDL_AtariXbiosMouseInstall(kbdvecs,SDL_AtariXbiosMouseVector);
63
64 /* Back to user mode */
65 Super(oldpile);
66
67 /* Clear variables */
68 SDL_AtariXbios_mouseb = SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
69 atari_prevmouseb = 0;
70 }
71
72 void AtariXbios_RestoreMouseVector(void)
73 {
74 void *oldpile;
75
76 /* Go to supervisor mode */
77 oldpile=(void *)Super(NULL);
78
79 /* Reinstall system vector */
80 SDL_AtariXbiosMouseInstall(kbdvecs,sys_kbdvecs.mousevec);
81
82 /* Back to user mode */
83 Super(oldpile);
84 }
85
86 static int atari_GetButton(int button)
87 {
88 switch(button)
89 {
90 case 0:
91 return SDL_BUTTON_RIGHT;
92 break;
93 case 1:
94 default:
95 return SDL_BUTTON_LEFT;
96 break;
97 }
98 }
99
100 void AtariXbios_PostMouseEvents(_THIS)
101 {
102 /* Mouse motion ? */
103 if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
104 SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
105 SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
106 }
107
108 /* Mouse button ? */
109 if (SDL_AtariXbios_mouseb != atari_prevmouseb) {
110 int i;
111
112 for (i=0;i<2;i++) {
113 int curbutton, prevbutton;
114
115 curbutton = SDL_AtariXbios_mouseb & (1<<i);
116 prevbutton = atari_prevmouseb & (1<<i);
117
118 if (curbutton & !prevbutton) {
119 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
120 }
121 if (!curbutton & prevbutton) {
122 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
123 }
124 }
125 atari_prevmouseb = SDL_AtariXbios_mouseb;
126 }
127 }