[sdl_omap.git] / src / video / ataricommon / SDL_ataridevmouse.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"

/*
	MiNT /dev/mouse driver

	Patrice Mandin
*/

#include <fcntl.h>
#include <unistd.h>

#include "../../events/SDL_events_c.h"
#include "SDL_ataridevmouse_c.h"

/* Defines */

#define DEVICE_NAME	"/dev/mouse"

/* Local variables */

static int handle = -1;
static int mouseb, prev_mouseb;

/* Functions */

int SDL_AtariDevMouse_Open(void)
{
	int r;
	const char *mousedev;

	/*
		TODO: Fix the MiNT device driver, that locks mouse for other
		applications, so this is disabled till fixed
	 */
	return 0;

	/* First, try SDL_MOUSEDEV device */
	mousedev = SDL_getenv("SDL_MOUSEDEV");
	if (!mousedev) {
		handle = open(mousedev, 0);
	}

	/* Failed, try default device */
	if (handle<0) {
		handle = open(DEVICE_NAME, 0);
	}

	if (handle<0) {
		handle = -1;
		return 0;
	}

	/* Set non blocking mode */
	r = fcntl(handle, F_GETFL, 0);
	if (r<0) {
		close(handle);
		handle = -1;
		return 0;
	}

	r |= O_NDELAY;

	r = fcntl(handle, F_SETFL, r);
	if (r<0) {
		close(handle);
		handle = -1;
		return 0;
	}

	prev_mouseb = 7;
	return 1;
}

void SDL_AtariDevMouse_Close(void)
{
	if (handle>0) {
		close(handle);
		handle = -1;
	}
}

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

	return SDL_BUTTON_LEFT;
}

void SDL_AtariDevMouse_PostMouseEvents(_THIS, SDL_bool buttonEvents)
{
	unsigned char buffer[3];
	int mousex, mousey;

	if (handle<0) {
		return;
	}

	mousex = mousey = 0;
	while (read(handle, buffer, sizeof(buffer))==sizeof(buffer)) {
		mouseb = buffer[0] & 7;
		mousex += (char) buffer[1];
		mousey += (char) buffer[2];

		/* Mouse button events */
		if (buttonEvents && (mouseb != prev_mouseb)) {
			int i;

			for (i=0;i<3;i++) {
				int curbutton, prevbutton;

				curbutton = mouseb & (1<<i);
				prevbutton = prev_mouseb & (1<<i);
			
				if (curbutton && !prevbutton) {
					SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
				}
				if (!curbutton && prevbutton) {
					SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
				}
			}

			prev_mouseb = mouseb;
		}
	}

	/* Mouse motion event */
	if (mousex || mousey) {
		SDL_PrivateMouseMotion(0, 1, mousex, -mousey);
	}
}
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	MiNT /dev/mouse driver
	26
	27	Patrice Mandin
	28	*/
	29
	30	#include <fcntl.h>
	31	#include <unistd.h>
	32
	33	#include "../../events/SDL_events_c.h"
	34	#include "SDL_ataridevmouse_c.h"
	35
	36	/* Defines */
	37
	38	#define DEVICE_NAME "/dev/mouse"
	39
	40	/* Local variables */
	41
	42	static int handle = -1;
	43	static int mouseb, prev_mouseb;
	44
	45	/* Functions */
	46
	47	int SDL_AtariDevMouse_Open(void)
	48	{
	49	int r;
	50	const char *mousedev;
	51
	52	/*
	53	TODO: Fix the MiNT device driver, that locks mouse for other
	54	applications, so this is disabled till fixed
	55	*/
	56	return 0;
	57
	58	/* First, try SDL_MOUSEDEV device */
	59	mousedev = SDL_getenv("SDL_MOUSEDEV");
	60	if (!mousedev) {
	61	handle = open(mousedev, 0);
	62	}
	63
	64	/* Failed, try default device */
65	if (handle<0) {
66	handle = open(DEVICE_NAME, 0);
67	}
68
69	if (handle<0) {
70	handle = -1;
71	return 0;
72	}
73
74	/* Set non blocking mode */
75	r = fcntl(handle, F_GETFL, 0);
76	if (r<0) {
77	close(handle);
78	handle = -1;
79	return 0;
80	}
81
82	r \|= O_NDELAY;
83
84	r = fcntl(handle, F_SETFL, r);
85	if (r<0) {
86	close(handle);
87	handle = -1;
88	return 0;
89	}
90
91	prev_mouseb = 7;
92	return 1;
93	}
94
95	void SDL_AtariDevMouse_Close(void)
96	{
97	if (handle>0) {
98	close(handle);
99	handle = -1;
100	}
101	}
102
103	static int atari_GetButton(int button)
104	{
105	switch(button)
106	{
107	case 0:
108	return SDL_BUTTON_RIGHT;
109	case 1:
110	return SDL_BUTTON_MIDDLE;
111	default:
112	break;
113	}
114
115	return SDL_BUTTON_LEFT;
116	}
117
118	void SDL_AtariDevMouse_PostMouseEvents(_THIS, SDL_bool buttonEvents)
119	{
120	unsigned char buffer[3];
121	int mousex, mousey;
122
123	if (handle<0) {
124	return;
125	}
126
127	mousex = mousey = 0;
128	while (read(handle, buffer, sizeof(buffer))==sizeof(buffer)) {
129	mouseb = buffer[0] & 7;
130	mousex += (char) buffer[1];
131	mousey += (char) buffer[2];
132
133	/* Mouse button events */
134	if (buttonEvents && (mouseb != prev_mouseb)) {
135	int i;
136
137	for (i=0;i<3;i++) {
138	int curbutton, prevbutton;
139
140	curbutton = mouseb & (1<<i);
141	prevbutton = prev_mouseb & (1<<i);
142
143	if (curbutton && !prevbutton) {
144	SDL_PrivateMouseButton(SDL_RELEASED, atari_GetButton(i), 0, 0);
145	}
146	if (!curbutton && prevbutton) {
147	SDL_PrivateMouseButton(SDL_PRESSED, atari_GetButton(i), 0, 0);
148	}
149	}
150
151	prev_mouseb = mouseb;
152	}
153	}
154
155	/* Mouse motion event */
156	if (mousex \|\| mousey) {
157	SDL_PrivateMouseMotion(0, 1, mousex, -mousey);
158	}
159	}