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comparison src/video/ataricommon/SDL_ikbdevents.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 * Atari keyboard events manager, using hardware IKBD
30 *
31 * Patrice Mandin
32 */
33
34 #include <string.h>
35
36 /* Mint includes */
37 #include <mint/osbind.h>
38
39 #include "SDL.h"
40 #include "SDL_sysevents.h"
41 #include "SDL_events_c.h"
42
43 #include "SDL_atarikeys.h"
44 #include "SDL_ikbdinterrupt_s.h"
45
46 /* Special keys state */
47 enum {
48 K_RSHIFT=0,
49 K_LSHIFT,
50 K_CTRL,
51 K_ALT,
52 K_CAPSLOCK,
53 K_CLRHOME,
54 K_INSERT
55 };
56
57 /* To save state of keyboard */
58 #define ATARIBIOS_MAXKEYS 128
59
60 static unsigned char ikbd_previouskeyboard[ATARIBIOS_MAXKEYS];
61 static Uint16 atari_prevmouseb; /* buttons */
62
63 /* The translation tables from a console scancode to a SDL keysym */
64 #define KT_NOCHANGE -1
65
66 enum {
67 KT_UNSHIFT=0,
68 KT_SHIFT=1,
69 KT_CAPS=2
70 };
71
72 static int caps_state;
73 _KEYTAB *curtables;
74 static unsigned char *tab_unshift, *tab_shift, *tab_caps;
75 static SDLKey keymap[ATARIBIOS_MAXKEYS];
76
77 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym);
78
79 void AtariIkbd_InitOSKeymap(_THIS)
80 {
81 int i;
82
83 memset(SDL_AtariIkbd_keyboard, 0, ATARIBIOS_MAXKEYS);
84 memset(ikbd_previouskeyboard, 0, ATARIBIOS_MAXKEYS);
85
86 /* Initialize keymap */
87 for ( i=0; i<sizeof(keymap); i++ )
88 keymap[i] = SDLK_UNKNOWN;
89
90 /* Functions keys */
91 for ( i = 0; i<10; i++ )
92 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
93
94 /* Cursor keypad */
95 keymap[SCANCODE_HELP] = SDLK_HELP;
96 keymap[SCANCODE_UNDO] = SDLK_UNDO;
97 keymap[SCANCODE_INSERT] = SDLK_INSERT;
98 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
99 keymap[SCANCODE_UP] = SDLK_UP;
100 keymap[SCANCODE_DOWN] = SDLK_DOWN;
101 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
102 keymap[SCANCODE_LEFT] = SDLK_LEFT;
103
104 /* Special keys */
105 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
106 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
107 keymap[SCANCODE_TAB] = SDLK_TAB;
108 keymap[SCANCODE_ENTER] = SDLK_RETURN;
109 keymap[SCANCODE_DELETE] = SDLK_DELETE;
110 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
111 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
112 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
113 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
114 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
115
116 /* Read XBIOS tables for scancode -> ascii translation */
117 curtables=Keytbl(KT_NOCHANGE, KT_NOCHANGE, KT_NOCHANGE);
118 tab_unshift=curtables->unshift;
119 tab_shift=curtables->shift;
120 tab_caps=curtables->caps;
121
122 /* Set Caps lock initial state */
123 caps_state=(Kbshift(-1) & (1<<K_CAPSLOCK));
124
125 /* Now install our handler */
126 SDL_AtariIkbd_mouseb = SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
127 atari_prevmouseb = 0;
128
129 Supexec(SDL_AtariIkbdInstall);
130 }
131
132 static int atari_GetButton(int button)
133 {
134 switch(button)
135 {
136 case 0:
137 return SDL_BUTTON_RIGHT;
138 break;
139 case 1:
140 default:
141 return SDL_BUTTON_LEFT;
142 break;
143 }
144 }
145
146 void AtariIkbd_PumpEvents(_THIS)
147 {
148 int i;
149 SDL_keysym keysym;
150 int specialkeys;
151
152 /*--- Send keyboard events ---*/
153
154 /* Update caps lock state */
155 if (SDL_AtariIkbd_keyboard[SCANCODE_CAPSLOCK] && !ikbd_previouskeyboard[SCANCODE_CAPSLOCK])
156 caps_state ^= 1;
157
158 /* Choose the translation table */
159 specialkeys=KT_UNSHIFT;
160 if (SDL_AtariIkbd_keyboard[SCANCODE_LEFTSHIFT] || SDL_AtariIkbd_keyboard[SCANCODE_RIGHTSHIFT])
161 specialkeys = KT_SHIFT;
162 if (caps_state)
163 specialkeys = KT_CAPS;
164
165 /* Now generate events */
166 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
167 /* Key pressed ? */
168 if (SDL_AtariIkbd_keyboard[i] && !ikbd_previouskeyboard[i])
169 SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, specialkeys, &keysym));
170
171 /* Key unpressed ? */
172 if (ikbd_previouskeyboard[i] && !SDL_AtariIkbd_keyboard[i])
173 SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, specialkeys, &keysym));
174 }
175
176 /* Will be previous table */
177 memcpy(ikbd_previouskeyboard, SDL_AtariIkbd_keyboard, ATARIBIOS_MAXKEYS);
178
179 /*--- Send mouse events ---*/
180
181 /* Mouse motion ? */
182 if (SDL_AtariIkbd_mousex || SDL_AtariIkbd_mousey) {
183 SDL_PrivateMouseMotion(0, 1, SDL_AtariIkbd_mousex, SDL_AtariIkbd_mousey);
184 SDL_AtariIkbd_mousex = SDL_AtariIkbd_mousey = 0;
185 }
186
187 /* Mouse button ? */
188 if (SDL_AtariIkbd_mouseb != atari_prevmouseb) {
189 for (i=0;i<2;i++) {
190 int curbutton, prevbutton;
191
192 curbutton = SDL_AtariIkbd_mouseb & (1<<i);
193 prevbutton = atari_prevmouseb & (1<<i);
194
195 if (curbutton & !prevbutton) {
196 SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
197 }
198 if (!curbutton & prevbutton) {
199 SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
200 }
201 }
202 atari_prevmouseb = SDL_AtariIkbd_mouseb;
203 }
204 }
205
206 static SDL_keysym *TranslateKey(int scancode, int numkeytable, SDL_keysym *keysym)
207 {
208 unsigned char asciicode;
209
210 /* Set the keysym information */
211 keysym->scancode = scancode;
212
213 asciicode=0;
214 switch(numkeytable) {
215 case KT_UNSHIFT:
216 asciicode=tab_unshift[scancode];
217 break;
218 case KT_SHIFT:
219 asciicode=tab_shift[scancode];
220 break;
221 case KT_CAPS:
222 asciicode=tab_caps[scancode];
223 break;
224 }
225
226 if (asciicode)
227 keysym->sym = asciicode;
228 else
229 keysym->sym = keymap[scancode];
230
231 keysym->mod = KMOD_NONE;
232 keysym->unicode = 0;
233
234 return(keysym);
235 }
236
237 void AtariIkbd_ShutdownEvents(void)
238 {
239 Supexec(SDL_AtariIkbdUninstall);
240 }
241