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lxdream.org :: lxdream/src/maple/mouse.c
lxdream 0.9.1
released Jun 29
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filename src/maple/mouse.c
changeset 634:b7d5592495e9
prev611:0c5f53a87501
next669:ab344e42bca9
author nkeynes
date Wed Feb 13 09:16:29 2008 +0000 (12 years ago)
permissions -rw-r--r--
last change Mouse button sense was inverted - fixed
file annotate diff log raw
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/**
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 * $Id$
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 *
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 * Implementation of the standard mouse device
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 *
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 * Copyright (c) 2005 Nathan Keynes.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 */
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "maple/maple.h"
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#define MOUSE_IDENT     { 0x00, 0x00, 0x02, 0x00,  0x02, 0x00, 0x07, 0x00,  0x00, 0x00, 0x00, 0x00,\
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 0x00, 0x00, 0x00, 0x00,  0xff, 0x00, 0x44, 0x72,  0x65, 0x61, 0x6d, 0x63,  0x61, 0x73, 0x74, 0x20,\
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 0x4d, 0x6f, 0x75, 0x73,  0x65, 0x20, 0x20, 0x20,  0x20, 0x20, 0x20, 0x20,  0x20, 0x20, 0x20, 0x20,\
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 0x20, 0x20, 0x20, 0x20,  0x50, 0x72, 0x6f, 0x64,  0x75, 0x63, 0x65, 0x64,  0x20, 0x42, 0x79, 0x20,\
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 0x6f, 0x72, 0x20, 0x55,  0x6e, 0x64, 0x65, 0x72,  0x20, 0x4c, 0x69, 0x63,  0x65, 0x6e, 0x73, 0x65,\
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 0x50, 0x52, 0x49, 0x53,  0x45, 0x53, 0x2c, 0x4c,  0x54, 0x44, 0x2e, 0x20,  0x20, 0x20, 0x20, 0x20,\
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 0x90, 0x01, 0xf4, 0x01 }
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#define MOUSE_VERSION   { 0x56, 0x65, 0x72, 0x73,  0x69, 0x6f, 0x6e, 0x20,  0x31, 0x2e, 0x30, 0x30,\
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 0x30, 0x2c, 0x32, 0x30,  0x30, 0x30, 0x2f, 0x30,  0x32, 0x2f, 0x32, 0x35,  0x2c, 0x33, 0x31, 0x35,\
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 0x2d, 0x36, 0x32, 0x31,  0x31, 0x2d, 0x41, 0x54,  0x20, 0x20, 0x20, 0x2c,  0x33, 0x20, 0x42, 0x75,\
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 0x74, 0x74, 0x6f, 0x6e,  0x20, 0x26, 0x20, 0x58,  0x2d, 0x59, 0x20, 0x42,  0x61, 0x6c, 0x6c, 0x20,\
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 0x26, 0x20, 0x5a, 0x20,  0x57, 0x68, 0x65, 0x65,  0x6c, 0x20, 0x2c, 0x34,  0x30, 0x30, 0x64, 0x70,\
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 0x69, 0x20, 0x20, 0x20 }
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#define BUTTON_MIDDLE 0x01
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#define BUTTON_RIGHT  0x02
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#define BUTTON_LEFT   0x04
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#define BUTTON_THUMB  0x08
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void mouse_attach( maple_device_t dev );
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void mouse_detach( maple_device_t dev );
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maple_device_t mouse_clone( maple_device_t dev );
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maple_device_t mouse_new();
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int mouse_get_cond( maple_device_t dev, int function, unsigned char *outbuf,
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                         unsigned int *outlen );
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typedef struct mouse_device {
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    struct maple_device dev;
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    uint32_t buttons;
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    int32_t axis[8];
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} *mouse_device_t; 
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struct maple_device_class mouse_class = { "Sega Mouse", mouse_new };
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static struct mouse_device base_mouse = {
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    { MAPLE_DEVICE_TAG, &mouse_class, MOUSE_IDENT, MOUSE_VERSION, 
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      NULL, mouse_attach, mouse_detach, maple_default_destroy,
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      mouse_clone, NULL, NULL, mouse_get_cond, NULL, NULL, NULL },
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    0, {0,0,0,0,0,0,0,0}, 
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};
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static int32_t mouse_axis_scale_factors[8] = { 10, 10, 1, 1, 1, 1, 1, 1 };
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#define MOUSE(x) ((mouse_device_t)(x))
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maple_device_t mouse_new( )
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{
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    mouse_device_t dev = malloc( sizeof(struct mouse_device) );
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    memcpy( dev, &base_mouse, sizeof(base_mouse) );
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    return MAPLE_DEVICE(dev);
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}
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maple_device_t mouse_clone( maple_device_t srcdevice )
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{
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    mouse_device_t src = (mouse_device_t)srcdevice;
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    mouse_device_t dev = (mouse_device_t)mouse_new();
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    dev->buttons = src->buttons;
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    memcpy( dev->axis, src->axis, sizeof(src->axis) );
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    return MAPLE_DEVICE(dev);
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}
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void mouse_input_callback( void *mdev, uint32_t buttons, int32_t x, int32_t y )
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{
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    mouse_device_t dev = (mouse_device_t)mdev;
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    dev->buttons = 0xFF;
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    if( buttons & 0x01 ) {
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	dev->buttons &= ~BUTTON_LEFT;
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    }
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    if( buttons & 0x02 ) {
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	dev->buttons &= ~BUTTON_MIDDLE;
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    } 
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    if( buttons & 0x04 ) {
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	dev->buttons &= ~BUTTON_RIGHT;
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    }
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    if( buttons & 0x08 ) {
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	dev->buttons &= ~BUTTON_THUMB;
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    }
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    dev->axis[0] += x;
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    dev->axis[1] += y;
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}
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void mouse_attach( maple_device_t dev )
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{
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    input_register_mouse_hook( TRUE, mouse_input_callback, dev );
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}
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void mouse_detach( maple_device_t dev )
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{
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    input_unregister_mouse_hook( mouse_input_callback, dev );
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}
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int mouse_get_cond( maple_device_t mdev, int function, unsigned char *outbuf,
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		       unsigned int *outlen )
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{
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    mouse_device_t dev = (mouse_device_t)mdev;
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    if( function == MAPLE_FUNC_MOUSE ) {
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        *outlen = 5;
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	*(uint32_t *)outbuf = dev->buttons;
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	uint16_t *p = (uint16_t *)(outbuf+4);
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	int i;
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	// Axis values are in the range 0..0x3FF, where 0x200 is zero movement
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	for( i=0; i<8; i++ ) {
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	    int32_t value = dev->axis[i] / mouse_axis_scale_factors[i];
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	    if( value < -0x200 ) {
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		p[i] = 0;
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	    } else if( value > 0x1FF ) {
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		p[i] = 0x3FF;
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	    } else {
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		p[i] = 0x200 + value;
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	    }
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	    dev->axis[i] = 0; // clear after returning.
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	}
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        return 0;
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    } else {
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        return MAPLE_ERR_FUNC_UNSUP;
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    }
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}
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.