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 Gemdos
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 /* To save state of keyboard */
43
44 static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
45 static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
46 static SDL_bool use_dev_mouse = SDL_FALSE;
47
48 enum {
49 DEV_BUSY=0,
50 DEV_READY
51 };
52
53 static void UpdateSpecialKeys(int special_keys_state);
54
AtariGemdos_InitOSKeymap(_THIS)55 void AtariGemdos_InitOSKeymap(_THIS)
56 {
57 int i, vectors_mask;
58 unsigned long dummy;
59
60 SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
61 SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
62
63 use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
64
65 vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS; /* XBIOS joystick events */
66 if (!use_dev_mouse) {
67 vectors_mask |= ATARI_XBIOS_MOUSEEVENTS; /* XBIOS mouse events */
68 }
69 /* if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
70 vectors_mask = 0;
71 }*/
72 SDL_AtariXbios_InstallVectors(vectors_mask);
73 }
74
AtariGemdos_PumpEvents(_THIS)75 void AtariGemdos_PumpEvents(_THIS)
76 {
77 int i;
78 SDL_keysym keysym;
79
80 /* Update pressed keys */
81 SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
82
83 while (Cconis()!=DEV_BUSY) {
84 unsigned long key_pressed;
85 key_pressed=Cnecin();
86 gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
87 }
88
89 /* Read special keys */
90 UpdateSpecialKeys(Kbshift(-1));
91
92 /* Now generate events */
93 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
94 /* Key pressed ? */
95 if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
96 SDL_PrivateKeyboard(SDL_PRESSED,
97 SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
98
99 /* Key unpressed ? */
100 if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
101 SDL_PrivateKeyboard(SDL_RELEASED,
102 SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
103 }
104
105 if (use_dev_mouse) {
106 SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
107 } else {
108 SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
109 }
110
111 /* Will be previous table */
112 SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, sizeof(gemdos_previouskeyboard));
113 }
114
UpdateSpecialKeys(int special_keys_state)115 static void UpdateSpecialKeys(int special_keys_state)
116 {
117 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
118 { \
119 if (special_keys_state & (1<<(numbit))) { \
120 gemdos_currentkeyboard[scancode]=0xFF; \
121 } \
122 }
123
124 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
125 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
126 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
127 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
128 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
129 }
130
AtariGemdos_ShutdownEvents(void)131 void AtariGemdos_ShutdownEvents(void)
132 {
133 SDL_AtariXbios_RestoreVectors();
134 if (use_dev_mouse) {
135 SDL_AtariDevMouse_Close();
136 }
137 }
138