///////////////////////////////////////////////////////////////////////////////
// UpdateThumbPosition
void CXScrollBar::UpdateThumbPosition()
{
double dPixels, dMax, dInterval, dPos;
dMax = m_nRange;
dPos = m_nPos;
if (m_bHorizontal)
{
dPixels = m_rectClient.Width() - 3*m_nBitmapWidth;
dInterval = dPixels / dMax;
double dThumbLeft = dPos * dInterval + 0.5;
m_nThumbLeft = m_nBitmapWidth + (int)dThumbLeft;
}
else
{
dPixels = m_rectClient.Height() - 3*m_nBitmapHeight;
dInterval = dPixels / dMax;
double dThumbTop = dPos * dInterval + 0.5;
m_nThumbTop = m_nBitmapHeight + (int)dThumbTop;
}
LimitThumbPosition();
Draw();
}
///////////////////////////////////////////////////////////////////////////////
// SetPositionFromThumb
void CXScrollBar::SetPositionFromThumb()
{
double dPixels, dMax, dInterval, dPos;
LimitThumbPosition();
dMax = m_nRange;
if (m_bHorizontal)
{
dPixels = m_rectClient.Width() - 3*m_nBitmapWidth;
dInterval = dMax / dPixels;
dPos = dInterval * (m_nThumbLeft - m_nBitmapWidth);
}
else
{
dPixels = m_rectClient.Height() - 3*m_nBitmapHeight;
dInterval = dMax / dPixels;
dPos = dInterval * (m_nThumbTop - m_nBitmapHeight);
}
m_nPos = (int) (dPos + 0.5);
if (m_nPos < 0)
{
m_nPos = 0;
}
if (m_nPos > m_nRange)
{
m_nPos = m_nRange;
}
}
void CSkinHorizontalScrollbar::UpdateThumbPosition()
{
#ifndef _DONT_USE_CUSTOMSCROLLBAR_
CRect clientRect;
GetClientRect(&clientRect);
/*
CRect itemRT;
pList->GetItemRect(0, itemRT, LVIR_BOUNDS);
if ( clientRect.Height() < itemRT.Height() * pList->GetItemCount() ) ShowWindow(SW_SHOW);
else {ShowWindow(SW_HIDE); return;}
*/
double nPos = pList->GetScrollPos(SB_HORZ);
double nMax = pList->GetScrollLimit(SB_HORZ);
double nWidth = clientRect.Width()-75;
double nVar = nMax;
dbThumbInterval = nWidth/nVar;
double nNewdbValue = dbThumbInterval * (nPos);
int nNewValue = (int)nNewdbValue;
double nExtra = nNewdbValue - nNewValue;
dbThumbRemainder = nExtra;
nThumbLeft = 25+nNewValue;
LimitThumbPosition();
Draw();
#endif
}
void CSkinVerticleScrollbar::OnMouseMove(UINT nFlags, CPoint point)
{
CRect clientRect;
GetClientRect(&clientRect);
if(bMouseDown)
{
nThumbTop = point.y-13; //-13 so mouse is in middle of thumb
double nMax = pList->GetScrollLimit(SB_VERT);
int nPos = pList->GetScrollPos(SB_VERT);
double nHeight = clientRect.Height()-98;
double nVar = nMax;
dbThumbInterval = nHeight/nVar;
//figure out how many times to scroll total from top
//then minus the current position from it
int nScrollTimes = (int)((nThumbTop-36)/dbThumbInterval)-nPos;
//grab the row height dynamically
//so if the font size or type changes
//our scroll will still work properly
CRect itemrect;
pList->GetItemRect(0,&itemrect, LVIR_BOUNDS);
CSize size;
size.cx = 0;
size.cy = nScrollTimes*itemrect.Height();
pList->Scroll(size);
LimitThumbPosition();
Draw();
}
CStatic::OnMouseMove(nFlags, point);
}
void CSkinVerticleScrollbar::UpdateThumbPosition()
{
CRect clientRect;
GetClientRect(&clientRect);
double nPos = pList->GetScrollPos(SB_VERT);
double nMax = pList->GetScrollLimit(SB_VERT);
double nHeight = (clientRect.Height()-98);
double nVar = nMax;
dbThumbInterval = nHeight/nVar;
double nNewdbValue = (dbThumbInterval * nPos);
int nNewValue = (int)nNewdbValue;
nThumbTop = 36+nNewValue;
LimitThumbPosition();
Draw();
}
void CSkinHorizontalScrollbar::OnMouseMove(UINT nFlags, CPoint point)
{
CRect clientRect;
GetClientRect(&clientRect);
if(bMouseDown)
bDragging = true;
if(bDragging)
{
nThumbLeft = point.x-13; //-13 so mouse is in middle of thumb
double nMax = pList->GetScrollLimit(SB_HORZ);
int nPos = pList->GetScrollPos(SB_HORZ);
double nWidth = clientRect.Width()-75;
double nVar = nMax;
dbThumbInterval = nWidth/nVar;
//figure out how many times to scroll total from top
//then minus the current position from it
int nScrollTimes = (int)((nThumbLeft-25)/dbThumbInterval)-nPos;
CSize size;
size.cx = nScrollTimes;
size.cy = 0;
pList->Scroll(size);
LimitThumbPosition();
Draw();
}
CStatic::OnMouseMove(nFlags, point);
}
