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 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
42static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
43static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
44static SDL_bool use_dev_mouse = SDL_FALSE;
45
46static void UpdateSpecialKeys(int special_keys_state);
47
48void AtariBios_InitOSKeymap(_THIS)
49{
50	int 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
69void 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
109static 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
125void AtariBios_ShutdownEvents(void)
126{
127	SDL_AtariXbios_RestoreVectors();
128	if (use_dev_mouse) {
129		SDL_AtariDevMouse_Close();
130	}
131}
132