Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Linux/Android touch implementation for inputsystem
//
//===========================================================================//
/* For force feedback testing. */
#include "inputsystem.h"
#include "tier1/convar.h"
#include "tier0/icommandline.h"
#include "SDL.h"
#include "SDL_touch.h"
// NOTE: This has to be the last file included!
#include "tier0/memdbgon.h"
//-----------------------------------------------------------------------------
// Handle the events coming from the Touch SDL subsystem.
//-----------------------------------------------------------------------------
int TouchSDLWatcher( void *userInfo, SDL_Event *event )
{
CInputSystem *pInputSystem = (CInputSystem *)userInfo;
SDL_Window *window = SDL_GetWindowFromID(event->tfinger.windowID);
if( !window )
return 0;
int width, height;
width = height = 0;
SDL_GetWindowSize(window, &width, &height);
switch ( event->type ) {
case SDL_FINGERDOWN:
pInputSystem->FingerDown( event->tfinger.fingerId, event->tfinger.x*width, event->tfinger.y*height );
break;
case SDL_FINGERUP:
pInputSystem->FingerUp( event->tfinger.fingerId, event->tfinger.x*width, event->tfinger.y*height );
break;
case SDL_FINGERMOTION:
pInputSystem->FingerMotion( event->tfinger.fingerId, event->tfinger.x*width, event->tfinger.y*height );
break;
}
return 1;
}
//-----------------------------------------------------------------------------
// Initialize all joysticks
//-----------------------------------------------------------------------------
void CInputSystem::InitializeTouch( void )
{
if ( m_bTouchInitialized )
ShutdownTouch();
// abort startup if user requests no touch
if ( CommandLine()->FindParm("-notouch") ) return;
m_bJoystickInitialized = true;
SDL_AddEventWatch(TouchSDLWatcher, this);
}
void CInputSystem::ShutdownTouch()
{
if ( !m_bTouchInitialized )
return;
SDL_DelEventWatch( TouchSDLWatcher, this );
m_bTouchInitialized = false;
}
void CInputSystem::FingerDown(int fingerId, int x, int y)
{
m_touchAccumEvent = IE_FingerDown;
m_touchAccumFingerId = fingerId;
m_touchAccumX = x;
m_touchAccumY = y;
PostEvent(IE_FingerDown, m_nLastSampleTick, fingerId, x, y);
}
void CInputSystem::FingerUp(int fingerId, int x, int y)
{
m_touchAccumEvent = IE_FingerUp;
m_touchAccumFingerId = fingerId;
m_touchAccumX = x;
m_touchAccumY = y;
PostEvent(IE_FingerUp, m_nLastSampleTick, fingerId, x, y);
}
void CInputSystem::FingerMotion(int fingerId, int x, int y)
{
m_touchAccumEvent = IE_FingerMotion;
m_touchAccumFingerId = fingerId;
m_touchAccumX = x;
m_touchAccumY = y;
PostEvent(IE_FingerMotion, m_nLastSampleTick, fingerId, x, y);
}