LONG FAR PASCAL SubClassFunc( HWND hwnd, WORD msg, WORD wParam, LONG lParam )
{
switch( msg )
{
case WM_CREATE:
{
Property *pProp = new Property;
pProp->m_defaults.m_rcMargins.Set( 2, 2, 5, 5 );
SetProp( hwnd, g_pcszProperty, reinterpret_cast<HANDLE>( pProp ) );
}
break;
case WM_DESTROY:
{
Property *pProp = reinterpret_cast<Property *>( RemoveProp( hwnd, g_pcszProperty ) );
delete pProp;
}
break;
case WM_WINDOWPOSCHANGING:
{
WINDOWPOS &pos = *(WINDOWPOS *)lParam;
Property *pProp = reinterpret_cast<Property *>( GetProp( hwnd, g_pcszProperty ) );
if( !(pos.flags & SWP_NOSIZE) && !( pos.flags & SWP_NOMOVE ) && pProp )
{
CWindowText text( hwnd );
if( text.GetLength() )
{
HFONT hFont = (HFONT)SendMessage( hwnd, WM_GETFONT, 0, 0 );
pProp->m_defaults.SetFont( hFont );
pProp->m_sectHTML.SetHTML( text, text.GetLength(), NULL );
}
return 0;
}
}
break;
case WM_WINDOWPOSCHANGED:
{
static bool bDealingWithIt = false;
Property *pProp = reinterpret_cast<Property *>( GetProp( hwnd, g_pcszProperty ) );
if( pProp && !bDealingWithIt )
{
bDealingWithIt = true;
CRect rcTip( 0, 0, 300, 5 );
CDrawContext dc;
pProp->m_sectHTML.OnLayout( rcTip, dc );
const CSize size( pProp->m_sectHTML.GetSize() );
rcTip.SetSize( size );
pProp->m_sectHTML.bottom = size.cy;
pProp->m_sectHTML.right = size.cx;
CPoint ptCursor;
GetCursorPos( ptCursor );
ptCursor.x += g_knTipClearanceX;
ptCursor.y += g_knTipClearanceY;
rcTip.Offset( ptCursor.x, ptCursor.y );
CRect rcDesktop;
GetDisplayWorkArea( hwnd, rcDesktop );
if( rcTip.right >= rcDesktop.right )
{
rcTip.Offset( -(rcTip.right - rcDesktop.right) - g_knTipClearanceX, 0 );
}
if( rcTip.bottom >= rcDesktop.bottom )
{
rcTip.Offset( 0, -rcTip.Height() - g_knTipClearanceY );
}
SetWindowPos( hwnd, NULL, rcTip.left, rcTip.top, rcTip.Width(), rcTip.Height(), SWP_NOACTIVATE | SWP_NOSENDCHANGING | SWP_NOZORDER );
bDealingWithIt = false;
}
return 0;
}
case WM_PAINT:
{
Property *pProp = reinterpret_cast<Property *>( GetProp( hwnd, g_pcszProperty ) );
if( pProp )
{
PAINTSTRUCT ps;
BeginPaint( hwnd, &ps );
CRect rcPaint( ps.rcPaint );
if( rcPaint.IsEmpty() )
{
GetClientRect( hwnd, &rcPaint );
}
//
// Scoped to allow the draw context to go out of scope before EndPaint is called.
{
CDrawContext dc( &rcPaint, ps.hdc );
SelectPalette( ps.hdc, GetCurrentWindowsPalette(), TRUE );
RealizePalette( ps.hdc );
pProp->m_sectHTML.OnDraw( dc );
}
EndPaint( hwnd, &ps );
return 0;
}
break;
}
}
return CallWindowProc( g_lpfnOldWndProc, hwnd, msg, wParam, lParam);
}
CTipWindow::CTipWindow( LPCTSTR pcszTip, CPoint &pt )
: CWindowSection( TIP_WINDOW )
, m_defaults( g_defaults )
, m_htmlSection( this, &m_defaults )
{
NONCLIENTMETRICS ncm;
ncm.cbSize = sizeof( ncm );
if( SystemParametersInfo( SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &ncm, 0 ) )
{
m_defaults.SetFont( ncm.lfStatusFont );
}
ASSERT( pcszTip );
m_strTip = pcszTip;
CRect rcDesktop;
GetDisplayWorkArea( pt, rcDesktop );
m_htmlSection.SetZoomLevel( QHTM_ZOOM_DEFAULT );
//
// Stop tip exceeding 'g_knMaxHeight' pixels
bool bDeleted = false;
while( HeightExceedsTipMax( m_strTip, g_knMaxHeight ) )
{
int iDeleteAt = m_strTip.GetLength() - m_strTip.GetLength() / 100 * 15; // Knock 15% off
m_strTip.Delete( iDeleteAt, m_strTip.GetLength() - iDeleteAt );
UINT iCheckHTML = m_strTip.GetLength() - 1;
while( iCheckHTML + 5 > m_strTip.GetLength() )
{
if( m_strTip[iCheckHTML] == '<' )
{
m_strTip.Delete( iCheckHTML, m_strTip.GetLength() - iCheckHTML );
break;
}
iCheckHTML--;
}
bDeleted = true;
}
if( bDeleted )
{
m_strTip += _T("...<br><b>more</b>");
}
m_defaults.m_crBackground = GetSysColor( COLOR_INFOBK );
m_defaults.m_crDefaultForeColour = GetSysColor( COLOR_INFOTEXT );
m_htmlSection.SetHTML( m_strTip, m_strTip.GetLength(), NULL );
CRect rcMargins( 2, 2, 2, 5 );
m_htmlSection.SetDefaultMargins( rcMargins );
CRect rcTip( 0, 0, g_knMaxTipWidth, 30 );
CDrawContext dc;
m_htmlSection.OnLayout( rcTip, dc );
const CSize size( m_htmlSection.GetSize() );
//
// Adjust for mouse size
pt.x += g_knTipClearanceX;
pt.y += g_knTipClearanceY;
rcTip.Set( pt.x, pt.y , pt.x + size.cx + 3, pt.y + size.cy );
//
// Move rect around based on desktop rect
if( rcTip.right > rcDesktop.right )
{
rcTip.Offset( -(rcTip.right - rcDesktop.right - g_knTipClearanceX), 0 );
}
if( rcTip.bottom > rcDesktop.bottom )
{
rcTip.Offset( 0, -rcTip.Height() - g_knTipClearanceY );
}
//
// Adjust tip so that it is within bounds
VERIFY( CWindowSection::Create( rcTip ) );
m_nLastTipCreated = GetTickCount();
ShowWindow( SW_SHOW );
}
