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;
}
/****f* EZ.LCD.Wrapper/CEzLcd::AddText
* NAME
* HANDLE CEzLcd::AddText -- Add a text object to the LCD
* INPUTS
* type - specifies whether the text is static or
* scrolling. Possible types are: LG_SCROLLING_TEXT,
* LG_STATIC_TEXT
* size - size of the text. Choose between these three:
* LG_SMALL, LG_MEDIUM or LG_BIG.
* alignment - alignment of the text. Values are: DT_LEFT,
* DT_CENTER, DT_RIGHT.
* maxLengthPixels - max length in pixels of the text. If the text is
* longer and of type LG_STATIC_TEXT, it will be cut
* off. If the text is longer and of type
* LG_SCROLLING_TEXT, it will scroll.
* RETURN VALUE
* Handle for this object.
* SEE ALSO
* CEzLcd::AddIcon
* CEzLcd::AddProgressBar
******
*/
HANDLE CEzLcd::AddText(LGObjectType type, LGTextSize size, INT alignment, INT maxLengthPixels)
{
assert(LG_SCROLLING_TEXT == type || LG_STATIC_TEXT == type);
CLCDText* staticText;
CLCDStreamingText* streamingText;
INT boxHeight = LG_MEDIUM_FONT_TEXT_BOX_HEIGHT;
INT fontSize = LG_MEDIUM_FONT_SIZE;
INT localOriginY = LG_MEDIUM_FONT_LOGICAL_ORIGIN_Y;
switch (type)
{
case LG_SCROLLING_TEXT:
streamingText = new CLCDStreamingText();
assert(NULL != streamingText);
streamingText->Initialize();
streamingText->SetOrigin(0, 0);
streamingText->SetFontFaceName(_T("Tahoma"));
streamingText->SetAlignment(alignment);
streamingText->SetText(_T(" "));
streamingText->SetGapText(LG_SCROLLING_GAP_TEXT);
streamingText->SetSpeed(LG_SCROLLING_SPEED);
streamingText->SetScrollingStep(LG_SCROLLING_STEP);
streamingText->SetStartDelay(LG_SCROLLING_DELAY_MS);
if (LG_SMALL == size)
{
boxHeight = LG_SMALL_FONT_TEXT_BOX_HEIGHT;
fontSize = LG_SMALL_FONT_SIZE;
localOriginY = LG_SMALL_FONT_LOGICAL_ORIGIN_Y;
}
else if (LG_MEDIUM == size)
{
boxHeight = LG_MEDIUM_FONT_TEXT_BOX_HEIGHT;
fontSize = LG_MEDIUM_FONT_SIZE;
localOriginY = LG_MEDIUM_FONT_LOGICAL_ORIGIN_Y;
}
else if (LG_BIG == size)
{
streamingText->SetFontWeight(FW_BOLD);
boxHeight = LG_BIG_FONT_TEXT_BOX_HEIGHT;
fontSize = LG_BIG_FONT_SIZE;
localOriginY = LG_BIG_FONT_LOGICAL_ORIGIN_Y;
}
streamingText->SetSize(maxLengthPixels, boxHeight);
streamingText->SetFontPointSize(fontSize);
streamingText->SetLogicalOrigin(0, localOriginY);
streamingText->SetObjectType(LG_SCROLLING_TEXT);
AddObject(streamingText);
return streamingText;
break;
case LG_STATIC_TEXT:
staticText = new CLCDText();
assert(NULL != staticText);
staticText->Initialize();
staticText->SetOrigin(0, 0);
staticText->SetFontFaceName(_T("Tahoma"));
staticText->SetAlignment(alignment);
staticText->SetBackgroundMode(OPAQUE);
staticText->SetText(_T(" "));
if (LG_SMALL == size)
{
boxHeight = LG_SMALL_FONT_TEXT_BOX_HEIGHT;
fontSize = LG_SMALL_FONT_SIZE;
localOriginY = LG_SMALL_FONT_LOGICAL_ORIGIN_Y;
}
else if (LG_MEDIUM == size)
{
boxHeight = LG_MEDIUM_FONT_TEXT_BOX_HEIGHT;
fontSize = LG_MEDIUM_FONT_SIZE;
localOriginY = LG_MEDIUM_FONT_LOGICAL_ORIGIN_Y;
}
else if (LG_BIG == size)
{
staticText->SetFontWeight(FW_BOLD);
boxHeight = LG_BIG_FONT_TEXT_BOX_HEIGHT;
fontSize = LG_BIG_FONT_SIZE;
localOriginY = LG_BIG_FONT_LOGICAL_ORIGIN_Y;
}
staticText->SetSize(maxLengthPixels, boxHeight);
staticText->SetFontPointSize(fontSize);
staticText->SetLogicalOrigin(0, localOriginY);
staticText->SetObjectType(LG_STATIC_TEXT);
AddObject(staticText);
return staticText;
break;
default:
Printf(_T("ERROR: trying to add text object with undefined type\n"));
}
return NULL;
}
