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
44static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
45static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
46static SDL_bool use_dev_mouse = SDL_FALSE;
47
48enum {
49	DEV_BUSY=0,
50	DEV_READY
51};
52
53static void UpdateSpecialKeys(int special_keys_state);
54
55void 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
75void 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
115static 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
131void AtariGemdos_ShutdownEvents(void)
132{
133	SDL_AtariXbios_RestoreVectors();
134	if (use_dev_mouse) {
135		SDL_AtariDevMouse_Close();
136	}
137}
138