1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 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
48static void UpdateSpecialKeys(int special_keys_state);
49
50void AtariGemdos_InitOSKeymap(_THIS)
51{
52	int vectors_mask;
53/*	unsigned long dummy;*/
54
55	SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
56	SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
57
58	use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
59
60	vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;	/* XBIOS joystick events */
61	if (!use_dev_mouse) {
62		vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;	/* XBIOS mouse events */
63	}
64/*	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
65		vectors_mask = 0;
66	}*/
67	SDL_AtariXbios_InstallVectors(vectors_mask);
68}
69
70void AtariGemdos_PumpEvents(_THIS)
71{
72	int i;
73	SDL_keysym keysym;
74
75	/* Update pressed keys */
76	SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
77
78	while (Cconis()!=DEV_BUSY) {
79		unsigned long key_pressed;
80		key_pressed=Cnecin();
81		gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
82	}
83
84	/* Read special keys */
85	UpdateSpecialKeys(Kbshift(-1));
86
87	/* Now generate events */
88	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
89		/* Key pressed ? */
90		if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
91			SDL_PrivateKeyboard(SDL_PRESSED,
92				SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
93
94		/* Key unpressed ? */
95		if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
96			SDL_PrivateKeyboard(SDL_RELEASED,
97				SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
98	}
99
100	if (use_dev_mouse) {
101		SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
102	} else {
103		SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
104	}
105
106	/* Will be previous table */
107	SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, sizeof(gemdos_previouskeyboard));
108}
109
110static void UpdateSpecialKeys(int special_keys_state)
111{
112#define UPDATE_SPECIAL_KEYS(numbit,scancode) \
113	{	\
114		if (special_keys_state & (1<<(numbit))) { \
115			gemdos_currentkeyboard[scancode]=0xFF; \
116		}	\
117	}
118
119	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
120	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
121	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
122	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
123	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
124}
125
126void AtariGemdos_ShutdownEvents(void)
127{
128	SDL_AtariXbios_RestoreVectors();
129	if (use_dev_mouse) {
130		SDL_AtariDevMouse_Close();
131	}
132}
133