//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void CTFRichText::OnTick()
{
if ( !IsVisible() )
return;
if ( m_pDownArrow && m_pUpArrow && m_pLine && m_pBox )
{
if ( _vertScrollBar && _vertScrollBar->IsVisible() )
{
_vertScrollBar->SetZPos( 500 );
// turn off painting the vertical scrollbar
_vertScrollBar->SetPaintBackgroundEnabled( false );
_vertScrollBar->SetPaintBorderEnabled( false );
_vertScrollBar->SetPaintEnabled( false );
_vertScrollBar->SetScrollbarButtonsVisible( false );
// turn on our own images
SetScrollBarImagesVisible ( true );
// set the alpha on the up arrow
int nMin, nMax;
_vertScrollBar->GetRange( nMin, nMax );
int nScrollPos = _vertScrollBar->GetValue();
int nRangeWindow = _vertScrollBar->GetRangeWindow();
int nBottom = nMax - nRangeWindow;
if ( nBottom < 0 )
{
nBottom = 0;
}
// set the alpha on the up arrow
int nAlpha = ( nScrollPos - nMin <= 0 ) ? 90 : 255;
m_pUpArrow->SetAlpha( nAlpha );
// set the alpha on the down arrow
nAlpha = ( nScrollPos >= nBottom ) ? 90 : 255;
m_pDownArrow->SetAlpha( nAlpha );
ScrollBarSlider *pSlider = _vertScrollBar->GetSlider();
if ( pSlider && pSlider->GetRangeWindow() > 0 )
{
int x, y, w, t, min, max;
m_pLine->GetBounds( x, y, w, t );
pSlider->GetNobPos( min, max );
m_pBox->SetBounds( x, y + min, w, ( max - min ) );
}
}
else
{
// turn off our images
SetScrollBarImagesVisible ( false );
}
}
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void ScrollBar::UpdateSliderImages( void )
{
if ( m_pUpArrow && m_pDownArrow )
{
// set the alpha on the up arrow
int nMin, nMax;
GetRange( nMin, nMax );
int nScrollPos = GetValue();
int nRangeWindow = GetRangeWindow();
int nBottom = nMax - nRangeWindow;
if ( nBottom < 0 )
{
nBottom = 0;
}
// set the alpha on the up arrow
int nAlpha = ( nScrollPos - nMin <= 0 ) ? 90 : 255;
m_pUpArrow->SetAlpha( nAlpha );
// set the alpha on the down arrow
nAlpha = ( nScrollPos >= nBottom ) ? 90 : 255;
m_pDownArrow->SetAlpha( nAlpha );
}
if ( m_pLine && m_pBox )
{
ScrollBarSlider *pSlider = GetSlider();
if ( pSlider && pSlider->GetRangeWindow() > 0 )
{
int x, y, w, t, min, max;
m_pLine->GetBounds( x, y, w, t );
// If our slider needs layout, force it to do it now
if ( pSlider->IsLayoutInvalid() )
{
pSlider->InvalidateLayout( true );
}
pSlider->GetNobPos( min, max );
if ( IsVertical() )
{
m_pBox->SetBounds( x, y + min, w, ( max - min ) );
}
else
{
m_pBox->SetBounds( x + min, 0, (max-min), t );
}
}
}
}