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SDL_win32mouse.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 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
*/
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/*we need to define it, so that raw input is included*/
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#if (_WIN32_WINNT < 0x0501)
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0501
#endif
#include "SDL_config.h"
#include "SDL_win32video.h"
#include "../../events/SDL_mouse_c.h"
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#include <wintab.h>
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#define PACKETDATA ( PK_X | PK_Y | PK_BUTTONS | PK_NORMAL_PRESSURE | PK_CURSOR)
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#define PACKETMODE 0
#include <pktdef.h>
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extern HANDLE* mice;
extern int total_mice;
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extern int tablet;
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void
WIN_InitMouse(_THIS)
{
int index=0;
RAWINPUTDEVICELIST *deviceList=NULL;
int devCount=0;
int i;
int tmp=0;
char* buffer=NULL;
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char* tab="wacom";/*since windows does't give us handles to tablets, we have to detect a tablet by it's name*/
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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/*we're checking for the number of rawinput devices*/
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if(GetRawInputDeviceList(NULL,&devCount,sizeof(RAWINPUTDEVICELIST)))
{
return;
}
else
{
deviceList = SDL_malloc(sizeof(RAWINPUTDEVICELIST)*devCount);
}
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/*we're getting the raw input device list*/
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GetRawInputDeviceList(deviceList,&devCount,sizeof(RAWINPUTDEVICELIST));
mice = SDL_malloc(devCount*sizeof(HANDLE));
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/*we're getting the details of the devices*/
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for(i=0;i<devCount;++i)
{
int j;
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int k;
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char *default_device_name="Pointing device xx";
const char *reg_key_root = "System\\CurrentControlSet\\Enum\\";
char *device_name=SDL_malloc(256*sizeof(char));
char *key_name=NULL;
char *tmp_name=NULL;
LONG rc = 0;
HKEY hkey;
DWORD regtype = REG_SZ;
DWORD out=256*sizeof(char);
SDL_Mouse mouse;
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int l;
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if(deviceList[i].dwType!=RIM_TYPEMOUSE) /*if a device isn't a mouse type we don't want it*/
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{
continue;
}
if(GetRawInputDeviceInfoA(deviceList[i].hDevice, RIDI_DEVICENAME, NULL, &tmp)<0)
{
continue;
}
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buffer = SDL_malloc((tmp+1)*sizeof(char));
key_name = SDL_malloc(tmp + sizeof(reg_key_root)*sizeof(char));
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/*we're getting the device registry path and polishing it to get it's name,
surely there must be an easier way, but we haven't found it yet*/
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if(GetRawInputDeviceInfoA(deviceList[i].hDevice, RIDI_DEVICENAME, buffer, &tmp)<0)
{
continue;
}
buffer+=4;
tmp-=4;
tmp_name=buffer;
for(j=0;j<tmp;++j)
{
if(*tmp_name=='#')
{
*tmp_name='\\';
}
else if(*tmp_name=='{')
{
break;
}
++tmp_name;
}
*tmp_name='\0';
SDL_memcpy(key_name, reg_key_root, SDL_strlen (reg_key_root));
SDL_memcpy(key_name + (SDL_strlen (reg_key_root)), buffer, j + 1);
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/*we're opening the registry key to get the mouse name*/
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rc = RegOpenKeyExA(HKEY_LOCAL_MACHINE, key_name, 0, KEY_READ, &hkey);
if (rc != ERROR_SUCCESS)
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{
SDL_memcpy(device_name, default_device_name, SDL_strlen(default_device_name));
}
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rc = RegQueryValueExA(hkey, "DeviceDesc", NULL, ®type, device_name, &out);
RegCloseKey(hkey);
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if (rc != ERROR_SUCCESS)
{
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SDL_memcpy(device_name, default_device_name, SDL_strlen(default_device_name));
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}
/*we're saving the handle to the device*/
mice[index]=deviceList[i].hDevice;
SDL_zero(mouse);
SDL_SetIndexId(index,index);
l=SDL_strlen(device_name);
/*we're checking if the device isn't by any chance a tablet*/
if(tablet==-1)
{
for(j=0;j<l-5;++j)
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{
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for(k=0;k<5;++k)
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{
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if(tab[k]!=SDL_tolower((unsigned char)device_name[j+k]))
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{
break;
}
}
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if(k==5)
{
tablet=index;
break;
}
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}
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}
/*if it's a tablet, let's read it's maximum and minimum pressure*/
if(tablet==index)
{
AXIS pressure;
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int cursors;
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WTInfo(WTI_DEVICES,DVC_NPRESSURE, &pressure);
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WTInfo(WTI_DEVICES,DVC_NCSRTYPES, &cursors);
data->mouse = SDL_AddMouse(&mouse, index,device_name,pressure.axMax,pressure.axMin,cursors);
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}
else
{
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data->mouse = SDL_AddMouse(&mouse, index,device_name,0,0,1);
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}
++index;
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SDL_free(buffer);
SDL_free(key_name);
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}
total_mice=index;
SDL_free(deviceList);
}
void
WIN_QuitMouse(_THIS)
{
int i;
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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/*let's delete all of the mouses*/
SDL_MouseQuit();
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}
/* vi: set ts=4 sw=4 expandtab: */
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