1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 /*
25 * Atari keyboard events manager, using BIOS
26 *
27 * Patrice Mandin
28 */
29
30 /* Mint includes */
31 #include <mint/osbind.h>
32 #include <mint/cookie.h>
33
34 #include "../../events/SDL_sysevents.h"
35 #include "../../events/SDL_events_c.h"
36
37 #include "SDL_atarikeys.h"
38 #include "SDL_atarievents_c.h"
39 #include "SDL_xbiosevents_c.h"
40 #include "SDL_ataridevmouse_c.h"
41
42 static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
43 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
44 static SDL_bool use_dev_mouse = SDL_FALSE;
45
46 static void UpdateSpecialKeys(int special_keys_state);
47
AtariBios_InitOSKeymap(_THIS)48 void AtariBios_InitOSKeymap(_THIS)
49 {
50 int i, vectors_mask;
51 unsigned long dummy;
52
53 SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
54 SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
55
56 use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
57
58 vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS; /* XBIOS joystick events */
59 if (!use_dev_mouse) {
60 vectors_mask |= ATARI_XBIOS_MOUSEEVENTS; /* XBIOS mouse events */
61 }
62 /* if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
63 vectors_mask = 0;
64 }*/
65
66 SDL_AtariXbios_InstallVectors(vectors_mask);
67 }
68
AtariBios_PumpEvents(_THIS)69 void AtariBios_PumpEvents(_THIS)
70 {
71 int i;
72 SDL_keysym keysym;
73
74 /* Update pressed keys */
75 SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
76
77 while (Bconstat(_CON)) {
78 unsigned long key_pressed;
79 key_pressed=Bconin(_CON);
80 bios_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
81 }
82
83 /* Read special keys */
84 UpdateSpecialKeys(Kbshift(-1));
85
86 /* Now generate events */
87 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
88 /* Key pressed ? */
89 if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
90 SDL_PrivateKeyboard(SDL_PRESSED,
91 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
92
93 /* Key unpressed ? */
94 if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
95 SDL_PrivateKeyboard(SDL_RELEASED,
96 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
97 }
98
99 if (use_dev_mouse) {
100 SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
101 } else {
102 SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
103 }
104
105 /* Will be previous table */
106 SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard, sizeof(bios_previouskeyboard));
107 }
108
UpdateSpecialKeys(int special_keys_state)109 static void UpdateSpecialKeys(int special_keys_state)
110 {
111 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
112 { \
113 if (special_keys_state & (1<<(numbit))) { \
114 bios_currentkeyboard[scancode]=0xFF; \
115 } \
116 }
117
118 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
119 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
120 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
121 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
122 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
123 }
124
AtariBios_ShutdownEvents(void)125 void AtariBios_ShutdownEvents(void)
126 {
127 SDL_AtariXbios_RestoreVectors();
128 if (use_dev_mouse) {
129 SDL_AtariDevMouse_Close();
130 }
131 }
132