void CLCDStreamingText::RecalcTextBoxOrigins()
{
if (m_Objects.size() <= 1)
return;
// draw everyone to the left by the offset
int nOrgOffset = 0;
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
CLCDBase* pObject = *it;
CLCDText* pText = (CLCDText*)pObject;
assert(NULL != pObject);
pText->SetLogicalSize(pText->GetHExtent().cx, pText->GetHExtent().cy);
// string can be empty which generates zero logical space
//assert(pText->GetLogicalSize().cx);
//assert(pText->GetLogicalSize().cy);
POINT& ptOrigin = pText->GetLogicalOrigin();
if (nOrgOffset == 0)
{
nOrgOffset = pText->GetLogicalOrigin().x;
}
pText->SetLogicalOrigin(nOrgOffset, ptOrigin.y);
nOrgOffset += pText->GetHExtent().cx;
++it;
}
}
void CLCDStreamingText::ApplyOrigins(int nOffset)
{
// draw everyone to the left by the offset
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
while(it != m_Objects.end())
{
CLCDBase* pObject = *it;
CLCDText* pText = (CLCDText*)pObject;
assert(NULL != pObject);
POINT& ptOrigin = pText->GetLogicalOrigin();
pText->SetLogicalOrigin(ptOrigin.x + nOffset, ptOrigin.y);
++it;
}
// If the active box is no longer visible,
// pop it off the push it to the end of the list
if (abs(m_pQueueHead->GetLogicalOrigin().x) >= m_pQueueHead->GetHExtent().cx)
{
m_Objects.pop_front();
m_Objects.push_back(m_pQueueHead);
RecalcTextBoxOrigins();
m_pQueueHead = (CLCDText*)*m_Objects.begin();
}
}
