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SDL_x11mouse.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
*/
#include "SDL_config.h"
#include "SDL_x11video.h"
#include "../../events/SDL_mouse_c.h"
void
X11_InitMouse(_THIS)
{
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extern XDevice **SDL_XDevices;
XDevice **newDevices;
int i,j,index=0, numOfDevices;
extern int SDL_NumOfXDevices;
XDeviceInfo *DevList;
XAnyClassPtr deviceClass;
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SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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/*we're getting the list of input devices*/
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DevList=XListInputDevices(data->display, &numOfDevices);
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SDL_XDevices=(XDevice**) SDL_malloc(sizeof(XDevice));
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/*we're aquiring valuators:mices, tablets, etc.*/
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for(i=0;i<numOfDevices;++i)
{
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/*if it's the core pointer or core keyborard we don't want it*/
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if((DevList[i].use!=IsXPointer && DevList[i].use!=IsXKeyboard))
{
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/*we have to check all of the device classes*/
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deviceClass=DevList[i].inputclassinfo;
for(j=0;j<DevList[i].num_classes;++j)
{
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if(deviceClass->class==ValuatorClass)/*bingo;)*/
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XValuatorInfo* valInfo;
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SDL_Mouse mouse;
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newDevices= (XDevice**) SDL_realloc(SDL_XDevices, (index+1)*sizeof(*newDevices));
if(!newDevices)
{
SDL_OutOfMemory();
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}
SDL_XDevices=newDevices;
SDL_XDevices[index]=XOpenDevice(data->display,DevList[i].id);
SDL_zero(mouse);
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/*the id of the device differs from its index
*so we're assigning the index of a device to it's id*/
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SDL_SetIndexId(DevList[i].id,index);
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/*lets get the device parameters*/
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valInfo=(XValuatorInfo*)deviceClass;
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/*if the device reports pressure, lets check it parameteres*/
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if(valInfo->num_axes>2)
{
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data->mouse = SDL_AddMouse(&mouse, index++,DevList[i].name,valInfo->axes[2].max_value,valInfo->axes[2].min_value,1);
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data->mouse = SDL_AddMouse(&mouse, index++,DevList[i].name,0,0,1);
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/*if it's not class we're interested in, lets go further*/
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deviceClass=(XAnyClassPtr)((char*)deviceClass + deviceClass->length);
}
}
}
XFreeDeviceList(DevList);
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SDL_NumOfXDevices=index;
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}
void
X11_QuitMouse(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
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/*Lets delete all of the mice*/
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SDL_MouseQuit();
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}
/* vi: set ts=4 sw=4 expandtab: */