void CResizableFormView::GetTotalClientRect(LPRECT lpRect) const
{
GetClientRect(lpRect);
// get dialog template's size
// (this is set in CFormView::Create)
CSize sizeTotal, sizePage, sizeLine;
int nMapMode = 0;
GetDeviceScrollSizes(nMapMode, sizeTotal, sizePage, sizeLine);
// otherwise, give the correct size if scrollbars active
if (nMapMode < 0) // scrollbars disabled
return;
// enlarge reported client area when needed
CRect rect(lpRect);
if (rect.Width() < sizeTotal.cx)
rect.right = rect.left + sizeTotal.cx;
if (rect.Height() < sizeTotal.cy)
rect.bottom = rect.top + sizeTotal.cy;
rect.OffsetRect(-GetDeviceScrollPosition());
*lpRect = rect;
}
void CBeatDetectView::GetViewRect
(
RECT *prc
)
{
INT32 nTemp;
SIZE szTotal, szTemp1, szTemp2;
GetDeviceScrollSizes( nTemp, szTotal, szTemp1, szTemp2 );
prc->top = 0;
prc->left = 0;
prc->bottom = szTotal.cy;
prc->right = szTotal.cx;
}
void CAutoScrollView::AutoScroll(UINT nRefMessage)
{
MSG msg; // dummmy message structure to process incoming
// messages while autoscrolling.
CPoint ptScrollPos, // Current scroll position - logical units
ptDevScrollPos, // Current scroll position - device units
ptCursorPos; // Current mouse cursor position
CRect rc; // Client area
long dx, dy; // Scrolling increment
SIZE sizeTotal, // CScrollView scroll data
sizePage,
sizeLine;
int nMapMode, // Mapping mode
nMapFactor, // Accounts for mapping mode
xMin, xMax,
yMin, yMax; // Scroll range
if (!m_bAutoScroll)
return;
msg.message = 0; // forces at least one loop.
SetCapture();
GetDeviceScrollSizes(nMapMode, sizeTotal, sizePage, sizeLine);
// We keep track of the scroll range because CScrollView::ScrollToPosition always
// try to scroll even if the scroll limit has been reached. This results in screen
// flickering when ScrollWindow is called.
GetScrollRange(SB_HORZ, &xMin, &xMax);
GetScrollRange(SB_VERT, &yMin, &yMax);
// Process all messages until the relevant mouse button
// has been released. nRefMessage depends on which button
// has been used to trigger autoscrolling.
// while (msg.message != nRefMessage)
BOOL bSawRefMessage = FALSE;
while (!bSawRefMessage)
{
// Process incoming messages until autoscroll button is released
// You cannot peek here because it may process an invalidate
// due to the scrolling.
/*
if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
*/
ptScrollPos = GetScrollPosition();
ptDevScrollPos = GetDeviceScrollPosition();
GetCursorPos(&ptCursorPos);
ScreenToClient(&ptCursorPos);
GetClientRect(&rc);
dx = 0L;
dy = 0L;
if ((ptCursorPos.y < 0) && (ptDevScrollPos.y != yMin))
// Cursor is above client area
dy = min(-sizeLine.cy, max(-sizePage.cy, (ptCursorPos.y/10) * sizeLine.cy));
else if ((ptCursorPos.y > rc.bottom) && (ptDevScrollPos.y != yMax))
// Cursor is below client area
dy = max(sizeLine.cy, min(sizePage.cy, ((ptCursorPos.y - rc.bottom)/10) * sizeLine.cy));
// otherwise we can't scroll anyway
if ((ptCursorPos.x < 0) && (ptDevScrollPos.x != xMin))
// Cursor is on the left of the client area
dx = min(-sizeLine.cx, max(-sizePage.cx, (ptCursorPos.x/10) * sizeLine.cx));
else if ((ptCursorPos.x > rc.right) && (ptDevScrollPos.x != xMax))
// Cursor is on the right of the client area
dx = max(sizeLine.cx, min(sizePage.cx, ((ptCursorPos.x - rc.right)/10) * sizeLine.cx));
// otherwise we can't scroll anyway
// if mouse cursor is dragging outside the client area, scrolling occurs
if ((dx != 0) || (dy != 0))
{
// Flip the Y coordinate if we're not in MM_TEXT
nMapFactor = (nMapMode == MM_TEXT) ? 1 : -1;
ptScrollPos.y += (int) dy * nMapFactor;
ptScrollPos.x += (int) dx;
m_bIsScrolling = TRUE;
OnAutoScroll(ptCursorPos, TRUE);
ScrollToPosition(ptScrollPos);
while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
// if (msg.message == nRefMessage) break;
if (msg.message == nRefMessage) bSawRefMessage = TRUE;
}
// if (!bSawRefMessage)
OnAutoScroll(ptCursorPos, FALSE);
}
else
{
while (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
// if (msg.message == nRefMessage) break;
if (msg.message == nRefMessage) bSawRefMessage = TRUE;
}
m_bIsScrolling = FALSE;
}
}
ReleaseCapture();
m_bIsScrolling = FALSE;
}
BOOL
MFCArrangeView::OnScroll(
UINT nScrollCode,
UINT unPos,
BOOL bDoScroll
)
{
int nPos = (int) unPos;
// fprintf(stderr, "on scroll %d/%d %d %d\n", nScrollCode&0xff, (nScrollCode&0xff00)>>8, nPos, bDoScroll);
InvalidateRect(NULL, TRUE);
switch ((nScrollCode&0xff00)>>8) {
case SB_BOTTOM: { // Scroll to bottom.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
int scrollMapMode;
CSize totalSize;
CSize pageSize;
CSize lineSize;
GetDeviceScrollSizes(scrollMapMode, totalSize, pageSize, lineSize);
// fprintf(stderr, "V Scrolling channels to bottom %d\n", pageSize.cy);
if (cPos < totalSize.cy) {
channeler->ScrollWindow(0, totalSize.cy-cPos, NULL, NULL);
}
}
break;
}
case SB_ENDSCROLL: { // End scroll.
if (channeler) {
// fprintf(stderr, "End of scroll\n");
}
break;
}
case SB_LINEDOWN: { // Scroll one line down.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
int scrollMapMode;
CSize totalSize;
CSize pageSize;
CSize lineSize;
GetDeviceScrollSizes(scrollMapMode, totalSize, pageSize, lineSize);
// fprintf(stderr, "V Scrolling channels linedown %d %d %d\n", lineSize.cy, cPos, totalSize.cy);
if (cPos < totalSize.cy-bounds.bottom) {
int scrollAmt = (cPos+lineSize.cy > totalSize.cy-bounds.bottom)?cPos - totalSize.cy+bounds.bottom:-lineSize.cy;
channeler->ScrollWindow(0, scrollAmt, NULL, NULL);
}
}
break;
}
case SB_LINEUP: { // Scroll one line up.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
long chPos = channeler->GetScrollPos(SB_VERT);
int scrollMapMode;
CSize totalSize;
CSize pageSize;
CSize lineSize;
GetDeviceScrollSizes(scrollMapMode, totalSize, pageSize, lineSize);
if (cPos > 0) {
int scrollAmt = (cPos-lineSize.cy < 0)?cPos:lineSize.cy;
// fprintf(stderr, "V Scrolling channels lineup %d %d %d scroll amt %d %d\n", lineSize.cy, cPos, totalSize.cy, scrollAmt, chPos);
channeler->ScrollWindow(0, scrollAmt, NULL, NULL);
}
}
break;
}
case SB_PAGEDOWN: { // Scroll one page down.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
int scrollMapMode;
CSize totalSize;
CSize pageSize;
CSize lineSize;
GetDeviceScrollSizes(scrollMapMode, totalSize, pageSize, lineSize);
// fprintf(stderr, "V Scrolling channels pagedown %d\n", pageSize.cy);
if (cPos < totalSize.cy-bounds.bottom) {
int scrollAmt = (cPos+pageSize.cy > totalSize.cy-bounds.bottom)?cPos - totalSize.cy+bounds.bottom:-pageSize.cy;
channeler->ScrollWindow(0, scrollAmt, NULL, NULL);
}
}
break;
}
case SB_PAGEUP: { // Scroll one page up.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
int scrollMapMode;
CSize totalSize;
CSize pageSize;
CSize lineSize;
GetDeviceScrollSizes(scrollMapMode, totalSize, pageSize, lineSize);
// fprintf(stderr, "V Scrolling channels pageup %d\n", pageSize.cy);
if (cPos > 0) {
int scrollAmt =
(cPos-pageSize.cy < 0)?cPos:pageSize.cy;
channeler->ScrollWindow(0, scrollAmt, NULL, NULL);
}
}
break;
}
case SB_THUMBPOSITION: // Scroll to the absolute position. The current position is provided in nPos.
case SB_THUMBTRACK: { // Drag scroll box to specified position. The current position is provided in nPos.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
// fprintf(stderr, "V Scrolling channels absolute in parallel %x %d %d\n", nScrollCode, nPos, cPos);
channeler->ScrollWindow(0,cPos-nPos,NULL,NULL);
}
break;
}
case SB_TOP: { // Scroll to top.
if (channeler && bDoScroll) {
long cPos = GetScrollPos(SB_VERT);
// fprintf(stderr, "V Scrolling to top (by %d)\n", -cPos);
if (cPos > 0) {
channeler->ScrollWindow(0,-cPos,NULL,NULL);
}
}
break;
}
}
return CScrollView::OnScroll(nScrollCode,unPos,bDoScroll);
}
