void CXTPPropertyPage::OnChildSetFocus(HWND hWndFocus)
{
if ((GetStyle() & (WS_HSCROLL | WS_VSCROLL)) == 0)
return;
CWnd* pWnd = CWnd::FromHandle(hWndFocus);
if (!pWnd)
return;
CRect rc;
pWnd->GetWindowRect(rc);
ScreenToClient(rc);
CXTPClientRect rcClient(this);
CSize szScroll(0, 0);
if (rc.bottom > rcClient.bottom)
szScroll.cy = rc.bottom - rcClient.bottom;
if (rc.top - szScroll.cy < rcClient.top)
szScroll.cy = rc.top - rcClient.top;
if (rc.right > rcClient.right)
szScroll.cx = rc.right - rcClient.right;
if (rc.left - szScroll.cx < rcClient.left)
szScroll.cx = rc.left - rcClient.left;
if (szScroll != CSize(0, 0))
{
OnScrollBy(szScroll, TRUE);
}
}
BOOL CXTPPropertyPage::DoMouseWheel(UINT fFlags, short zDelta, CPoint point)
{
UNUSED_ALWAYS(point);
UNUSED_ALWAYS(fFlags);
// if we have a vertical scroll bar, the wheel scrolls that
// if we have _only_ a horizontal scroll bar, the wheel scrolls that
// otherwise, don't do any work at all
DWORD dwStyle = GetStyle();
CScrollBar* pBar = GetScrollBarCtrl(SB_VERT);
BOOL bHasVertBar = ((pBar != NULL) && pBar->IsWindowEnabled()) ||
(dwStyle & WS_VSCROLL);
pBar = GetScrollBarCtrl(SB_HORZ);
BOOL bHasHorzBar = ((pBar != NULL) && pBar->IsWindowEnabled()) ||
(dwStyle & WS_HSCROLL);
if (!bHasVertBar && !bHasHorzBar)
return FALSE;
BOOL bResult = FALSE;
UINT uWheelScrollLines = 3;
if (bHasVertBar)
{
bResult = OnScrollBy(CSize(0, (zDelta < 0 ? 1 : -1) * m_lineDev.cy * uWheelScrollLines), TRUE);
}
else if (bHasHorzBar)
{
bResult = OnScrollBy(CSize((zDelta < 0 ? 1 : -1) * m_lineDev.cy * uWheelScrollLines, 0), TRUE);
}
if (bResult)
UpdateWindow();
return bResult;
}
BOOL CScrollWnd::DoMouseWheel(UINT fFlags, short zDelta, CPoint point)
{
UNUSED_ALWAYS(point);
UNUSED_ALWAYS(fFlags);
// if we have a vertical scroll bar, the wheel scrolls that
// if we have _only_ a horizontal scroll bar, the wheel scrolls that
// otherwise, don't do any work at all
DWORD dwStyle = GetStyle();
CScrollBar* pBar = GetScrollBarCtrl(SB_VERT);
BOOL bHasVertBar = ((pBar != NULL) && pBar->IsWindowEnabled()) ||
(dwStyle & WS_VSCROLL);
pBar = GetScrollBarCtrl(SB_HORZ);
BOOL bHasHorzBar = ((pBar != NULL) && pBar->IsWindowEnabled()) ||
(dwStyle & WS_HSCROLL);
if (!bHasVertBar && !bHasHorzBar)
return FALSE;
BOOL bResult = FALSE;
UINT uWheelScrollLines = 10;//_AfxGetMouseScrollLines();
int nToScroll;
int nDisplacement;
if (bHasVertBar)
{
nToScroll = ::MulDiv(-zDelta, uWheelScrollLines, WHEEL_DELTA);
if (nToScroll == -1 || uWheelScrollLines == WHEEL_PAGESCROLL)
{
nDisplacement = m_pageDev.cy;
if (zDelta > 0)
nDisplacement = -nDisplacement;
}
else
{
nDisplacement = nToScroll * m_lineDev.cy;
nDisplacement = min(nDisplacement, m_pageDev.cy);
}
bResult = OnScrollBy(CSize(0, nDisplacement), TRUE);
}
else if (bHasHorzBar)
{
nToScroll = ::MulDiv(-zDelta, uWheelScrollLines, WHEEL_DELTA);
if (nToScroll == -1 || uWheelScrollLines == WHEEL_PAGESCROLL)
{
nDisplacement = m_pageDev.cx;
if (zDelta > 0)
nDisplacement = -nDisplacement;
}
else
{
nDisplacement = nToScroll * m_lineDev.cx;
nDisplacement = min(nDisplacement, m_pageDev.cx);
}
bResult = OnScrollBy(CSize(nDisplacement, 0), TRUE);
}
if (bResult)
UpdateWindow();
return bResult;
}
BOOL CScrollWnd::OnScroll(UINT nScrollCode, UINT nPos, BOOL bDoScroll)
{
// calc new x position
int x = GetScrollPos(SB_HORZ);
int xOrig = x;
switch (LOBYTE(nScrollCode))
{
case SB_TOP:
x = 0;
break;
case SB_BOTTOM:
x = INT_MAX;
break;
case SB_LINEUP:
x -= m_lineDev.cx;
break;
case SB_LINEDOWN:
x += m_lineDev.cx;
break;
case SB_PAGEUP:
x -= m_pageDev.cx;
break;
case SB_PAGEDOWN:
x += m_pageDev.cx;
break;
case SB_THUMBTRACK:
x = nPos;
break;
}
// calc new y position
int y = GetScrollPos(SB_VERT);
int yOrig = y;
switch (HIBYTE(nScrollCode))
{
case SB_TOP:
y = 0;
break;
case SB_BOTTOM:
y = INT_MAX;
break;
case SB_LINEUP:
y -= m_lineDev.cy;
break;
case SB_LINEDOWN:
y += m_lineDev.cy;
break;
case SB_PAGEUP:
y -= m_pageDev.cy;
break;
case SB_PAGEDOWN:
y += m_pageDev.cy;
break;
case SB_THUMBTRACK:
y = nPos;
break;
}
BOOL bResult = OnScrollBy(CSize(x - xOrig, y - yOrig), bDoScroll);
if (bResult && bDoScroll)
UpdateWindow();
return bResult;
}
BOOL CScrView::OnScroll(UINT nScrollCode, UINT nPos, BOOL bDoScroll)
{
CPointAp newpos = scrollpos_;
switch (LOBYTE(nScrollCode))
{
case SB_TOP:
newpos.x = 0;
break;
case SB_BOTTOM:
newpos.x = total_.cx - win_width_;
break;
case SB_LINEUP:
newpos.x -= line_.cx;
break;
case SB_LINEDOWN:
newpos.x += line_.cx;
break;
case SB_PAGEUP:
newpos.x -= page_.cx;
break;
case SB_PAGEDOWN:
newpos.x += page_.cx;
break;
case SB_THUMBPOSITION:
// DoInvalidate here as this event sent after mouse released after
// all SB_THUMBTRACK events. This removes any bits of the scroll-
// bar left after tracking caused the scroll bar to "evaporate".
DoInvalidate();
// fall through
case SB_THUMBTRACK:
newpos.x = (int)(((__int64)nPos * total_.cx) / maxbar_.cx);
if (total_.cx > maxbar_.cx && newpos.x > total_.cx - win_width_)
newpos.x = total_.cx - win_width_;
break;
}
switch (HIBYTE(nScrollCode))
{
case SB_TOP:
newpos.y = 0;
break;
case SB_BOTTOM:
newpos.y = total_.cy - win_height_;
break;
case SB_LINEUP:
newpos.y -= line_.cy;
break;
case SB_LINEDOWN:
newpos.y += line_.cy;
break;
case SB_PAGEUP:
newpos.y -= page_.cy;
break;
case SB_PAGEDOWN:
newpos.y += page_.cy;
break;
case SB_THUMBPOSITION:
// Invalidate here as this event sent after mouse released after
// SB_THUMBTRACK events finished. This removes any bits of the
// scrollbar left after tracking caused the scroll bar to "evaporate".
DoInvalidate();
// fall through
case SB_THUMBTRACK:
newpos.y = ((__int64)nPos * total_.cy) / maxbar_.cy;
if (total_.cy > maxbar_.cy && newpos.y > total_.cy - win_height_)
newpos.y = total_.cy - win_height_;
break;
}
#if 0
if (bDoScroll)
ValidateScroll(newpos);
// Work out amount to scroll (in device coordinates)
{
CClientDC dc(this);
OnPrepareDC(&dc);
CSize amt = CSize(newpos - scrollpos_); // This won't work
dc.LPtoDP(&amt);
}
BOOL retval = OnScrollBy(amt, bDoScroll);
if (retval && bDoScroll)
DoUpdateWindow();
return retval;
#else
if (bDoScroll)
{
ValidateScroll(newpos);
update_bars(newpos);
DoUpdateWindow();
}
return TRUE;
#endif
}
BOOL CScrollView::OnScroll( UINT nScrollCode, UINT nPos, BOOL bDoScroll )
/***********************************************************************/
{
CRect rectClient;
GetClientRect( &rectClient );
BOOL bHasX = m_totalDev.cx > rectClient.Width();
BOOL bHasY = m_totalDev.cy > rectClient.Height();
int nHorzPos = GetScrollPos( SB_HORZ );
switch( LOBYTE( nScrollCode ) ) {
case SB_LEFT:
nHorzPos = 0;
break;
case SB_LINELEFT:
nHorzPos -= m_lineDev.cx;
break;
case SB_LINERIGHT:
nHorzPos += m_lineDev.cx;
break;
case SB_PAGELEFT:
nHorzPos -= m_pageDev.cx;
break;
case SB_PAGERIGHT:
nHorzPos += m_pageDev.cx;
break;
case SB_RIGHT:
nHorzPos = m_totalDev.cx;
break;
case SB_THUMBPOSITION:
nHorzPos = nPos;
break;
case SB_THUMBTRACK:
nHorzPos = nPos;
break;
}
int nVertPos = GetScrollPos( SB_VERT );
switch( HIBYTE( nScrollCode ) ) {
case SB_BOTTOM:
nVertPos = m_totalDev.cy;
break;
case SB_LINEDOWN:
nVertPos += m_lineDev.cy;
break;
case SB_LINEUP:
nVertPos -= m_lineDev.cy;
break;
case SB_PAGEDOWN:
nVertPos += m_pageDev.cy;
break;
case SB_PAGEUP:
nVertPos -= m_pageDev.cy;
break;
case SB_THUMBPOSITION:
nVertPos = nPos;
break;
case SB_THUMBTRACK:
nVertPos = nPos;
break;
case SB_TOP:
nVertPos = 0;
break;
}
if( nVertPos < 0 ) {
nVertPos = 0;
}
return( OnScrollBy( CSize( nHorzPos - GetScrollPos( SB_HORZ ),
nVertPos - GetScrollPos( SB_VERT ) ), bDoScroll ) );
}
BOOL CBigScrollView::OnScroll(UINT nScrollCode, UINT nPos, BOOL bDoScroll)
{
// calc new x position
int x = GetScrollPos(SB_HORZ);
int xOrig = x;
switch (LOBYTE(nScrollCode))
{
case SB_TOP:
x = 0;
break;
case SB_BOTTOM:
x = INT_MAX;
break;
case SB_LINEUP:
x -= m_lineDev.cx;
break;
case SB_LINEDOWN:
x += m_lineDev.cx;
break;
case SB_PAGEUP:
x -= m_pageDev.cx;
break;
case SB_PAGEDOWN:
x += m_pageDev.cx;
break;
case SB_THUMBTRACK:
{
SCROLLINFO si;
si.fMask = SIF_TRACKPOS;
si.cbSize = sizeof(SCROLLINFO);
GetScrollInfo(SB_HORZ,&si,SIF_TRACKPOS);
x = si.nTrackPos;
break;
}
}
// calc new y position
int y = GetScrollPos(SB_VERT);
int yOrig = y;
switch (HIBYTE(nScrollCode))
{
case SB_TOP:
y = 0;
break;
case SB_BOTTOM:
y = INT_MAX;
break;
case SB_LINEUP:
y -= m_lineDev.cy;
break;
case SB_LINEDOWN:
y += m_lineDev.cy;
break;
case SB_PAGEUP:
y -= m_pageDev.cy;
break;
case SB_PAGEDOWN:
y += m_pageDev.cy;
break;
case SB_THUMBTRACK:
{
SCROLLINFO si;
si.fMask = SIF_TRACKPOS;
si.cbSize = sizeof(SCROLLINFO);
GetScrollInfo(SB_VERT,&si,SIF_TRACKPOS);
y = si.nTrackPos;
break;
}
}
BOOL bResult = OnScrollBy(wxSize(x - xOrig, y - yOrig), bDoScroll);
if (bResult && bDoScroll)
UpdateWindow();
return bResult;
}
