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;
}
}
HRESULT CEzLcdPage::SetText(HANDLE handle, LPCTSTR text, BOOL resetScrollingTextPosition)
{
CLCDBase* myObject = GetObject(handle);
if (NULL != myObject)
{
if (!((LG_STATIC_TEXT == myObject->GetObjectType() || LG_SCROLLING_TEXT == myObject->GetObjectType() || LG_RIGHTFOCUS_TEXT == myObject->GetObjectType() )))
return E_FAIL;
if (LG_STATIC_TEXT == myObject->GetObjectType())
{
CLCDText* staticText = static_cast<CLCDText*>(myObject);
if (NULL == staticText)
return E_FAIL;
staticText->SetText(text);
return S_OK;
}
else if (LG_SCROLLING_TEXT == myObject->GetObjectType())
{
CLCDStreamingText* streamingText = static_cast<CLCDStreamingText*>(myObject);
if (NULL == streamingText)
return E_FAIL;
streamingText->SetText(text);
if (resetScrollingTextPosition)
{
streamingText->ResetUpdate();
}
return S_OK;
}
else if (LG_RIGHTFOCUS_TEXT == myObject->GetObjectType())
{
CLCDText* rightFocusText = static_cast<CLCDText*>(myObject);
if (NULL == rightFocusText)
return E_FAIL;
rightFocusText->SetText(text);
rightFocusText->CalculateExtent(true);
// if out of focus, set alignment to right in order to follow what is written
if (rightFocusText->GetHExtent().cx>=rightFocusText->GetSize().cx)
rightFocusText->SetAlignment(DT_RIGHT);
else
rightFocusText->SetAlignment(DT_LEFT);
return S_OK;
}
}
return E_FAIL;
}
BOOL CLCDStreamingText::RecalcTextBoxes(CLCDGfx &rGfx)
{
// check if we need to add another text box
LCD_OBJECT_LIST::iterator it = m_Objects.begin();
if (it == m_Objects.end())
return FALSE;
CLCDBase* pObject = *it;
CLCDText* pText = (CLCDText*)pObject;
assert(NULL != pObject);
LOGFONT lf;
GetObject(m_hFont, sizeof(LOGFONT), &lf);
pText->SetFont(lf);
// this will re-evaluate the main text object
assert(m_Objects.size() == 1);
CLCDCollection::OnDraw(rGfx);
if (it != m_Objects.end())
{
if (pText->GetHExtent().cx > GetWidth())
{
pText->SetAlignment(DT_LEFT);
// add a gap
AddText(m_szGapText);
// add another text
AddText(m_szText);
// add last gap
AddText(m_szGapText);
}
else
{
pText->SetAlignment(m_nTextAlignment);
}
}
// this will re-evaluate the other text objects
CLCDCollection::OnDraw(rGfx);
RecalcTextBoxOrigins();
return TRUE;
}
