void touchmind::util::ScrollBarHelper::UpdateScrollInfo(HWND hWnd) {
SCROLLINFO scrollInfoHorz;
GetHScrollInfo(&scrollInfoHorz);
::SetScrollInfo(hWnd, SB_HORZ, &scrollInfoHorz, TRUE);
SCROLLINFO scrollInfoVert;
GetVScrollInfo(&scrollInfoVert);
::SetScrollInfo(hWnd, SB_VERT, &scrollInfoVert, TRUE);
}
void MScrollView::HScroll(int nSB_, int nPos)
{
SCROLLINFO si;
si.cbSize = sizeof(si);
si.fMask = SIF_ALL;
GetHScrollInfo(&si);
switch (nSB_)
{
case SB_TOP:
SetHScrollPos(0);
break;
case SB_BOTTOM:
SetHScrollPos(si.nMax - si.nPage);
break;
case SB_LINELEFT:
SetHScrollPos(si.nPos - 16);
break;
case SB_LINERIGHT:
SetHScrollPos(si.nPos + 16);
break;
case SB_PAGELEFT:
SetHScrollPos(si.nPos - si.nPage);
break;
case SB_PAGERIGHT:
SetHScrollPos(si.nPos + si.nPage);
break;
case SB_THUMBPOSITION:
case SB_THUMBTRACK:
SetHScrollPos(nPos);
break;
}
ScrollPos().x = GetHScrollPos();
UpdateAll();
}
/*--------------------------------------------------------------------------*/
BOOL PegWindow::CheckAutoScroll(void)
{
PegScrollInfo mInfo;
PegMessage NewMessage;
BOOL bChange = FALSE;
if (muScrollMode & WSM_AUTOHSCROLL)
{
GetHScrollInfo(&mInfo);
if (mInfo.wMax - mInfo.wMin >= mInfo.wVisible)
{
// we need a horizontal scroll
if (!mpHScroll)
{
mpHScroll = new PegHScroll();
mClient.wBottom -= PEG_SCROLL_WIDTH;
Add(mpHScroll, FALSE);
if (mpVScroll && StatusIs(PSF_VISIBLE))
{
NewMessage.wType = PM_PARENTSIZED;
mpVScroll->Message(NewMessage);
}
bChange = TRUE;
}
else
{
if (mInfo.wCurrent + mInfo.wVisible > mInfo.wMax)
{
NewMessage.wType = PM_HSCROLL;
NewMessage.lData = mInfo.wMax - mInfo.wVisible + 1;
NewMessage.iData = mInfo.wCurrent;
NewMessage.pTarget = this;
MessageQueue()->Push(NewMessage);
mInfo.wCurrent = (SIGNED) NewMessage.lData;
}
mpHScroll->Reset(&mInfo);
}
}
else
{
// we don't need an HScroll:
if (mpHScroll)
{
mClient.wBottom += PEG_SCROLL_WIDTH;
Remove(mpHScroll, FALSE);
MessageQueue()->Purge(mpHScroll);
delete mpHScroll;
mpHScroll = NULL;
bChange = TRUE;
if (mpVScroll && StatusIs(PSF_VISIBLE))
{
NewMessage.wType = PM_PARENTSIZED;
mpVScroll->Message(NewMessage);
}
NewMessage.wType = PM_HSCROLL;
NewMessage.lData = mInfo.wMin;
NewMessage.iData = mInfo.wCurrent;
NewMessage.pTarget = this;
MessageQueue()->Push(NewMessage);
}
}
}
if (muScrollMode & WSM_AUTOVSCROLL)
{
GetVScrollInfo(&mInfo);
if (mInfo.wMax - mInfo.wMin >= mInfo.wVisible)
{
// we need a vertical scroll
if (!mpVScroll) // don't have one?
{
mpVScroll = new PegVScroll();
mClient.wRight -= PEG_SCROLL_WIDTH;
Add(mpVScroll, FALSE);
if (mpHScroll && StatusIs(PSF_VISIBLE))
{
NewMessage.wType = PM_PARENTSIZED;
mpHScroll->Message(NewMessage);
}
mpVScroll->Reset(&mInfo);
bChange = TRUE;
}
else
{
if (mInfo.wCurrent + mInfo.wVisible > mInfo.wMax)
{
NewMessage.wType = PM_VSCROLL;
NewMessage.lData = mInfo.wMax - mInfo.wVisible + 1;
NewMessage.iData = mInfo.wCurrent;
NewMessage.pTarget = this;
MessageQueue()->Push(NewMessage);
mInfo.wCurrent = (SIGNED) NewMessage.lData;
}
mpVScroll->Reset(&mInfo);
}
}
else
{
// here if we don't need a vertical scroll
if (mpVScroll) // do we have one?
{
mClient.wRight += PEG_SCROLL_WIDTH;
Remove(mpVScroll, FALSE);
MessageQueue()->Purge(mpVScroll);
delete mpVScroll;
mpVScroll = NULL;
bChange = TRUE;
if (mpHScroll && StatusIs(PSF_VISIBLE))
{
NewMessage.wType = PM_PARENTSIZED;
mpHScroll->Message(NewMessage);
}
NewMessage.wType = PM_VSCROLL;
NewMessage.lData = mInfo.wMin;
NewMessage.iData = mInfo.wCurrent;
NewMessage.pTarget = this;
MessageQueue()->Push(NewMessage);
}
}
}
if (bChange)
{
CheckAutoScroll();
}
return bChange;
}