void CaImMenu::MeasureItem (LPMEASUREITEMSTRUCT lpMeasureItemStruct) {
MENUITEMINFO iInfo;
GetMenuItemInfo (lpMeasureItemStruct->CtlID, &iInfo);
CaImMenuItem* pItem = (CaImMenuItem*)lpMeasureItemStruct->itemData;
CFont fntDef;
LOGFONT lfDef;
CClientDC dc (0);
CFont* pFont = (CFont *)dc.SelectStockObject (ANSI_VAR_FONT);
if (pItem->CheckStyle (AMIS_DEFAULT)) {
CFont* pFnt = dc.GetCurrentFont ();
pFnt->GetLogFont (&lfDef);
lfDef.lfWeight = FW_BOLD;
fntDef.CreateFontIndirect (&lfDef);
dc.SelectObject (&fntDef);
}
if (pItem->CheckStyle (AMIS_BAR))
lpMeasureItemStruct->itemHeight = 4;
else
lpMeasureItemStruct->itemHeight = m_dwHeight;
lpMeasureItemStruct->itemWidth = 25 + 8 + 8 + 2 + dc.GetTextExtent (pItem->GetText ()).cx;
dc.SelectObject (pFont);
if (pItem->CheckStyle (AMIS_DEFAULT))
fntDef.DeleteObject ();
}
// determine size of a given cell based on actual font settings
CSize CMiniCalendarCtrl::ComputeSize()
{
const int iXDaysSpaceFromBorder = 15;
const int iHeaderSpaceForBorder = 15;
const int iHeaderYSpaceForBorder = 3;
const int iDaysXSpacing = 5;
const int iDaysYSpacing = 2;
CSize szReturn(0, 0);
int iWidthByDays = 0;
int iWidthByDaysOfWeekIndividual = 0;
int iWidthByHeader = 0;
int iHeaderHeight = 0;
int iDaysHeight = 0;
int iX;
// allocate a DC to use when testing sizes, etc
CClientDC* pDC = NULL;
if (::IsWindow(GetSafeHwnd()))
pDC = new CClientDC(this);
else
pDC = new CClientDC(AfxGetMainWnd());
ASSERT(pDC);
if (!pDC)
throw (new CMemoryException());
// get current font and save for later restoration
CFont* pOldFont = pDC->GetCurrentFont();
// first, use days to determine width
// NOTE: typically, most fonts use the same pixel sizes for all numbers,
// but this is not mandatory and many "fancy" fonts change this. To deal
// with this, I am calculating the width of all possible dates the control will display
pDC->SelectObject(m_pFont);
for (iX = 1; iX <= 31; iX++)
{
CString strTemp = "00";
strTemp += CCalendarUtils::LongToString(iX);
strTemp = strTemp.Right(2);
CSize szTemp = pDC->GetTextExtent(strTemp);
if (szTemp.cx > iWidthByDays)
iWidthByDays = szTemp.cx;
if (szTemp.cy > iDaysHeight)
iDaysHeight = szTemp.cy;
}
// make sure we also try it with the special days font
pDC->SelectObject(m_pFontBold);
for (iX = 1; iX <= 31; iX++)
{
CString strTemp = "00";
strTemp += CCalendarUtils::LongToString(iX);
strTemp = strTemp.Right(2);
CSize szTemp = pDC->GetTextExtent(strTemp);
if (szTemp.cx > iWidthByDays)
iWidthByDays = szTemp.cx;
if (szTemp.cy > iDaysHeight)
iDaysHeight = szTemp.cy;
}
// finish computation
m_iDaysHeight = iDaysHeight;
m_iIndividualDayWidth = iWidthByDays;
iWidthByDays = (iWidthByDays * 7) + (iDaysXSpacing*6) + (iXDaysSpaceFromBorder*2);
iDaysHeight = (iDaysHeight * 6) + (iDaysYSpacing*6);
// next use days of week to determine width and height. here again, we test each variant
pDC->SelectObject(m_pFont);
int iWidthByDaysOfWeek = pDC->GetTextExtent("S").cx;
if (pDC->GetTextExtent("M").cx > iWidthByDaysOfWeek)
iWidthByDaysOfWeek = pDC->GetTextExtent("M").cx;
if (pDC->GetTextExtent("T").cx > iWidthByDaysOfWeek)
iWidthByDaysOfWeek = pDC->GetTextExtent("T").cx;
if (pDC->GetTextExtent("W").cx > iWidthByDaysOfWeek)
iWidthByDaysOfWeek = pDC->GetTextExtent("W").cx;
if (pDC->GetTextExtent("F").cx > iWidthByDaysOfWeek)
iWidthByDaysOfWeek = pDC->GetTextExtent("F").cx;
int iDaysOfWeekHeight = pDC->GetTextExtent("S").cy;
if (pDC->GetTextExtent("M").cy > iDaysOfWeekHeight)
iDaysOfWeekHeight = pDC->GetTextExtent("M").cy;
if (pDC->GetTextExtent("T").cy > iDaysOfWeekHeight)
iDaysOfWeekHeight = pDC->GetTextExtent("T").cy;
if (pDC->GetTextExtent("W").cy > iDaysOfWeekHeight)
iDaysOfWeekHeight = pDC->GetTextExtent("W").cy;
if (pDC->GetTextExtent("F").cy > iDaysOfWeekHeight)
iDaysOfWeekHeight = pDC->GetTextExtent("F").cy;
// finish computation
iWidthByDaysOfWeekIndividual = iWidthByDaysOfWeek;
iWidthByDaysOfWeek = (iWidthByDaysOfWeek * 7) + (iDaysXSpacing*6) + (iXDaysSpaceFromBorder*2);
if (iWidthByDaysOfWeekIndividual > m_iIndividualDayWidth)
m_iIndividualDayWidth = iWidthByDaysOfWeekIndividual;
m_iDaysOfWeekHeight = iDaysOfWeekHeight;
// next compute width and height of header (month name and year)
// again, because of font variations we will use a 20 year window and
// attempt the calculation with every month name
pDC->SelectObject(m_pFontBold);
for (int iYear = m_iCurrentYear-10; iYear <= m_iCurrentYear+10; iYear++)
{
for (int iMonth = 1; iMonth <= 12; iMonth++)
{
CString strTest = GetMonthName(iMonth);
strTest += " ";
strTest += CCalendarUtils::LongToString(iYear);
if (pDC->GetTextExtent(strTest).cx > iWidthByHeader)
iWidthByHeader = pDC->GetTextExtent(strTest).cx;
if (pDC->GetTextExtent(strTest).cy > iHeaderHeight)
iHeaderHeight = pDC->GetTextExtent(strTest).cy;
}
}
// finish computation
iWidthByHeader += (iHeaderSpaceForBorder*2);
iHeaderHeight += (iHeaderYSpaceForBorder*2);
m_iHeaderHeight = iHeaderHeight;
// cleanup DC
pDC->SelectObject(pOldFont);
// destroy DC
delete pDC;
// NOW, adjust return size if needed
// start with widths (these are easy at this point)
int iTotalWidth = iWidthByHeader;
if (iWidthByDaysOfWeek > iTotalWidth)
iTotalWidth = iWidthByDaysOfWeek;
if (iWidthByDays > iTotalWidth)
iTotalWidth = iWidthByDays;
if (iTotalWidth > szReturn.cx)
szReturn.cx = iTotalWidth;
// adjust heights
int iTotalHeight = iHeaderHeight + iDaysOfWeekHeight + iDaysHeight + 12;
if (iTotalHeight > szReturn.cy)
szReturn.cy = iTotalHeight;
m_szMonthSize = szReturn;
m_bSizeComputed = TRUE;
return szReturn;
}
