void CLCDOutput::Update(DWORD dwTimestamp)
{
if (m_pActiveScreen)
{
m_pActiveScreen->Update(dwTimestamp);
}
// check for expiration
if (m_pActiveScreen && m_pActiveScreen->HasExpired())
{
m_pActiveScreen = NULL;
//m_nPriority = LGLCD_PRIORITY_FYI; -> needs to go so that if a
// program sets priority to LGLCD_PRIORITY_BACKGROUND, that
// priority sticks.
OnScreenExpired(m_pActiveScreen);
// Clear the bitmap
ClearBitmap(m_pLastBitmap);
// find the next active screen
LCD_MGR_LIST::iterator it = m_LCDMgrList.begin();
while(it != m_LCDMgrList.end())
{
CLCDManager *pMgr = *it;
LCDUIASSERT(NULL != pMgr);
if (!pMgr->HasExpired())
{
ActivateScreen(pMgr);
//m_nPriority = LGLCD_PRIORITY_FYI; -> needs to go so that if a
// program sets priority to LGLCD_PRIORITY_BACKGROUND, that
// priority sticks.
break;
}
++it;
}
// if no screen found, empty the screen at idle priority
if (NULL == m_pActiveScreen)
{
if (LGLCD_INVALID_DEVICE != m_hDevice)
{
lgLcdUpdateBitmap(m_hDevice, &CLCDManager::GetLCDScreen()->hdr,
LGLCD_ASYNC_UPDATE(LGLCD_PRIORITY_IDLE_NO_SHOW));
}
}
}
// check for lcd devices
if (LGLCD_INVALID_DEVICE == m_hDevice)
{
EnumerateDevices();
}
}
void CLCDOutput::Update(DWORD dwTimestamp)
{
if (m_pActiveScreen)
{
m_pActiveScreen->Update(dwTimestamp);
}
// check for expiration
if (m_pActiveScreen && m_pActiveScreen->HasExpired(dwTimestamp))
{
m_pActiveScreen = NULL;
//m_nPriority = LGLCD_PRIORITY_FYI; -> needs to go so that if a
// program sets priority to LGLCD_PRIORITY_BACKGROUND, that
// priority sticks.
OnScreenExpired(m_pActiveScreen);
// find the next active screen
LCD_MGR_LIST::iterator it = m_LCDMgrList.begin();
while(it != m_LCDMgrList.end())
{
CLCDManager *pMgr = *it;
LOGIASSERT(NULL != pMgr);
if (!pMgr->HasExpired(dwTimestamp))
{
ActivateScreen(pMgr);
//m_nPriority = LGLCD_PRIORITY_FYI; -> needs to go so that if a
// program sets priority to LGLCD_PRIORITY_BACKGROUND, that
// priority sticks.
break;
}
++it;
}
}
// check for lcd devices
if (LGLCD_INVALID_DEVICE == m_hDevice)
{
EnumerateDevices();
}
}
//************************************************************************
// Deactivates the active screen
//************************************************************************
bool CLCDOutputManager::DeactivateScreen()
{
if(m_pActiveScreen == NULL)
return false;
CLCDScreen *pActiveScreen = m_pActiveScreen;
m_pActiveScreen = NULL;
if(pActiveScreen->HasExpired())
{
pActiveScreen->OnExpiration();
OnScreenExpired(pActiveScreen);
}
else
{
OnScreenDeactivated(pActiveScreen);
pActiveScreen->OnDeactivation();
}
return true;
}