[sdl_omap.git] / src / video / ataricommon / SDL_xbiosevents.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

/*
 *	XBIOS mouse & joystick vectors
 *
 *	Patrice Mandin
 */

#include <mint/osbind.h>

#include "../../events/SDL_events_c.h"
#include "SDL_xbiosevents_c.h"
#include "SDL_xbiosinterrupt_s.h"

/* Variables */

int SDL_AtariXbios_enabled=0;

/* Local variables */

static _KBDVECS *kbdvecs;		/* Pointer to access system vectors */
static Uint16 atari_prevmouseb;	/* buttons */

/* Functions */

void SDL_AtariXbios_InstallVectors(int vectors_mask)
{
	void *oldpile;

	/* Clear variables */
	SDL_AtariXbios_mouselock =
		SDL_AtariXbios_mouseb =
		SDL_AtariXbios_mousex =
		SDL_AtariXbios_mousey =
		SDL_AtariXbios_joystick =
		atari_prevmouseb = 0;

	if (vectors_mask==0) {
		SDL_AtariXbios_enabled=0;
		return;
	}

	/* Read IKBD vectors base */
	kbdvecs=Kbdvbase();

	/* Go to supervisor mode */
	oldpile=(void *)Super(0);

	/* Install our vectors */
	SDL_AtariXbios_Install(
		kbdvecs,
		(vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
		(vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
	);

	/* Back to user mode */
	Super(oldpile);

	SDL_AtariXbios_enabled=1;
}

void SDL_AtariXbios_RestoreVectors(void)
{
	void *oldpile;

	if (SDL_AtariXbios_enabled==0) {
		return;
	}

	/* Read IKBD vectors base */
	kbdvecs=Kbdvbase();

	/* Go to supervisor mode */
	oldpile=(void *)Super(NULL);

	/* Reinstall system vector */
	SDL_AtariXbios_Restore(kbdvecs);

	/* Back to user mode */
	Super(oldpile);
}

static int atari_GetButton(int button)
{
	switch(button)
	{
		case 0:
			return SDL_BUTTON_RIGHT;
			break;
		case 1:
		default:
			return SDL_BUTTON_LEFT;
			break;
	}
}

void SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)
{
	if (SDL_AtariXbios_enabled==0) {
		return;
	}

	/* Mouse motion ? */
	if (SDL_AtariXbios_mousex || SDL_AtariXbios_mousey) {
		SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
		SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
	}
	
	/* Mouse button ? */
	if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {
		int i;

		for (i=0;i<2;i++) {
			int curbutton, prevbutton;

			curbutton = SDL_AtariXbios_mouseb & (1<<i);
			prevbutton = atari_prevmouseb & (1<<i);

			if (curbutton && !prevbutton) {
				SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
			}
			if (!curbutton && prevbutton) {
				SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
			}
		}
		atari_prevmouseb = SDL_AtariXbios_mouseb;
	}
}

void SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition)
{
	SDL_AtariXbios_mouselock = lockPosition;
}
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 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	* XBIOS mouse & joystick vectors
	26	*
	27	* Patrice Mandin
	28	*/
	29
	30	#include <mint/osbind.h>
	31
	32	#include "../../events/SDL_events_c.h"
	33	#include "SDL_xbiosevents_c.h"
	34	#include "SDL_xbiosinterrupt_s.h"
	35
	36	/* Variables */
	37
	38	int SDL_AtariXbios_enabled=0;
	39
	40	/* Local variables */
	41
	42	static _KBDVECS kbdvecs; / Pointer to access system vectors */
	43	static Uint16 atari_prevmouseb; /* buttons */
	44
	45	/* Functions */
	46
	47	void SDL_AtariXbios_InstallVectors(int vectors_mask)
	48	{
	49	void *oldpile;
	50
	51	/* Clear variables */
	52	SDL_AtariXbios_mouselock =
	53	SDL_AtariXbios_mouseb =
	54	SDL_AtariXbios_mousex =
	55	SDL_AtariXbios_mousey =
	56	SDL_AtariXbios_joystick =
	57	atari_prevmouseb = 0;
	58
	59	if (vectors_mask==0) {
	60	SDL_AtariXbios_enabled=0;
	61	return;
	62	}
	63
	64	/* Read IKBD vectors base */
65	kbdvecs=Kbdvbase();
66
67	/* Go to supervisor mode */
68	oldpile=(void *)Super(0);
69
70	/* Install our vectors */
71	SDL_AtariXbios_Install(
72	kbdvecs,
73	(vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
74	(vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
75	);
76
77	/* Back to user mode */
78	Super(oldpile);
79
80	SDL_AtariXbios_enabled=1;
81	}
82
83	void SDL_AtariXbios_RestoreVectors(void)
84	{
85	void *oldpile;
86
87	if (SDL_AtariXbios_enabled==0) {
88	return;
89	}
90
91	/* Read IKBD vectors base */
92	kbdvecs=Kbdvbase();
93
94	/* Go to supervisor mode */
95	oldpile=(void *)Super(NULL);
96
97	/* Reinstall system vector */
98	SDL_AtariXbios_Restore(kbdvecs);
99
100	/* Back to user mode */
101	Super(oldpile);
102	}
103
104	static int atari_GetButton(int button)
105	{
106	switch(button)
107	{
108	case 0:
109	return SDL_BUTTON_RIGHT;
110	break;
111	case 1:
112	default:
113	return SDL_BUTTON_LEFT;
114	break;
115	}
116	}
117
118	void SDL_AtariXbios_PostMouseEvents(_THIS, SDL_bool buttonEvents)
119	{
120	if (SDL_AtariXbios_enabled==0) {
121	return;
122	}
123
124	/* Mouse motion ? */
125	if (SDL_AtariXbios_mousex \|\| SDL_AtariXbios_mousey) {
126	SDL_PrivateMouseMotion(0, 1, SDL_AtariXbios_mousex, SDL_AtariXbios_mousey);
127	SDL_AtariXbios_mousex = SDL_AtariXbios_mousey = 0;
128	}
129
130	/* Mouse button ? */
131	if (buttonEvents && (SDL_AtariXbios_mouseb != atari_prevmouseb)) {
132	int i;
133
134	for (i=0;i<2;i++) {
135	int curbutton, prevbutton;
136
137	curbutton = SDL_AtariXbios_mouseb & (1<<i);
138	prevbutton = atari_prevmouseb & (1<<i);
139
140	if (curbutton && !prevbutton) {
141	SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
142	}
143	if (!curbutton && prevbutton) {
144	SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
145	}
146	}
147	atari_prevmouseb = SDL_AtariXbios_mouseb;
148	}
149	}
150
151	void SDL_AtariXbios_LockMousePosition(SDL_bool lockPosition)
152	{
153	SDL_AtariXbios_mouselock = lockPosition;
154	}