void CLCDOutput::HandleButtonState(DWORD dwButtonState, DWORD dwButton)
{
if ( (m_dwButtonState & dwButton) && !(dwButtonState & dwButton) )
{
LCDUITRACE(_T("Button 0x%x released\n"), dwButton);
OnLCDButtonUp(dwButton);
}
if ( !(m_dwButtonState & dwButton) && (dwButtonState & dwButton) )
{
LCDUITRACE(_T("Button 0x%x pressed\n"), dwButton);
OnLCDButtonDown(dwButton);
}
}
//************************************************************************
// Update all Screens & draw
//************************************************************************
bool CLCDOutputManager::Update()
{
ASSERT(m_bInitialized);
// Update the active screen
if(m_pActiveScreen != NULL)
{
m_pActiveScreen->Update();
// Check if the active screen has expired
if(m_pActiveScreen->HasExpired())
{
// Call event handlers
DeactivateScreen();
return true;
}
}
if(!m_pLcdConnection)
return true;
// Update
m_pLcdConnection->Update();
// skip button checking and drawing if there is no connection to a device
if(m_pLcdConnection->GetConnectionState() != CONNECTED)
return true;
// Handle buttons
bool bState = false;
int iId = 0;
for(int i = 0; i < m_pLcdConnection->GetButtonCount(); i ++)
{
// get current state
bState = m_pLcdConnection->GetButtonState(i);
// handle input event
if(bState != m_pbButtonStates[i])
{
iId = m_pLcdConnection->GetButtonId(i);
if(bState) {
OnLCDButtonDown(iId);
} else {
OnLCDButtonUp(iId);
}
m_pdwButtonRepeatStarts[i] = GetTickCount();
m_pdwButtonRepeatTimers[i] = m_pdwButtonRepeatStarts[i] + m_dwButtonRepeatDelay;
}
// check if repeat event should be sent
else if(bState && m_pdwButtonRepeatTimers[i] <= GetTickCount())
{
iId = m_pLcdConnection->GetButtonId(i);
// reduce the delay by 5% per second
DWORD dwNewDelay = m_dwButtonRepeatDelay - ((float)m_dwButtonRepeatDelay * 0.05 * (GetTickCount() - m_pdwButtonRepeatStarts[i]) / 250);
// delay may not be less than 25% of the original value
if(dwNewDelay < m_dwButtonRepeatDelay * 0.25)
dwNewDelay = m_dwButtonRepeatDelay * 0.25;
m_pdwButtonRepeatTimers[i] = GetTickCount() + dwNewDelay;
OnLCDButtonRepeated(iId);
}
// save the current state
m_pbButtonStates[i] = bState;
}
// Draw
if(m_pActiveScreen != NULL && m_pGfx->IsInitialized())
{
m_pGfx->BeginDraw();
m_pGfx->ClearScreen();
m_pActiveScreen->Draw(m_pGfx);
m_pGfx->EndDraw();
m_pLcdConnection->SetAlert(m_pActiveScreen->GetAlert());
m_pLcdConnection->Draw();
}
else
m_pLcdConnection->HideApplet();
m_dwLastUpdate = GetTickCount();
return true;
}