tbool CScrollBar::OnMouse(EMouseMsg MouseMsg, const SPos& Pos)
{
if (!IsVisible()) {
return false;
}
if (CPane::OnMouse(MouseMsg, Pos)) {
return true;
}
if (mbScrolling) {
// We're currently scrolling
switch(MouseMsg) {
case MouseMove:
{
switch(mType) {
case TypeHorizontal:
{
// Calculate the mouse delta
tint iMouseDelta = Pos.iX - mMousePosOrg.iX;
// Calculate where we want the handle to be
tint iHandlePosX = mScrollBarRectOrg.iX + iMouseDelta;
// Calculate movememt from mouse delta
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrowLeft;
pControl->GetRect(RctArrowLeft);
// Left-most possible handle position
SPos PosLeftMost(RctArrowLeft.iX + RctArrowLeft.iCX, RctArrowLeft.iY);
pControl = *it;
SPos PosRightArrow;
pControl->GetPos(PosRightArrow);
tint iMaxWidth = PosRightArrow.iX - PosLeftMost.iX;
// Calculate the relative width we occupy
tfloat64 fWidthRelative = mScrollPos.VisibleRect.iCX / (double)mScrollPos.AreaSize.iCX;
// Calculate the ralative position to be
tfloat64 fPositionRelative = (iHandlePosX - PosLeftMost.iX) / (iMaxWidth - (fWidthRelative * iMaxWidth));
// Update scrolling position
mScrollPos = mScrollPosOrg;
mScrollPos.VisibleRect.iX = (int)((fPositionRelative * (mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX)) + 0.5f);
// Limit scrolling position
if (mScrollPos.VisibleRect.iX < 0) {
mScrollPos.VisibleRect.iX = 0;
}
if (mScrollPos.VisibleRect.iX > mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX) {
mScrollPos.VisibleRect.iX = mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX;
}
// Redraw and set scroll pos (which will cause scroll pane to redraw)
CControl::Redraw();
mpScrollPane->SetScrollPos(mScrollPos);
SetValue(0);
}
break;
case TypeVertical:
{
// Calculate the mouse delta
tint iMouseDelta = Pos.iY - mMousePosOrg.iY;
// Calculate where we want the handle to be
tint iHandlePosY = mScrollBarRectOrg.iY + iMouseDelta;
// Calculate movememt from mouse delta
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrowTop;
pControl->GetRect(RctArrowTop);
// Top-most possible handle position
SPos PosTopMost(RctArrowTop.iX, RctArrowTop.iY + RctArrowTop.iCY);
pControl = *it;
SPos PosBottomArrow;
pControl->GetPos(PosBottomArrow);
tint iMaxHeight = PosBottomArrow.iY - PosTopMost.iY;
// Calculate the relative height we occupy
tfloat64 fHeightRelative = mScrollPos.VisibleRect.iCY / (double)mScrollPos.AreaSize.iCY;
// Calculate the ralative position to be
tfloat64 fPositionRelative = (iHandlePosY - PosTopMost.iY) / (iMaxHeight - (fHeightRelative * iMaxHeight));
// Update scrolling position
mScrollPos = mScrollPosOrg;
mScrollPos.VisibleRect.iY = (int)((fPositionRelative * (mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY)) + 0.5f);
// Limit scrolling position
if (mScrollPos.VisibleRect.iY < 0) {
mScrollPos.VisibleRect.iY = 0;
}
if (mScrollPos.VisibleRect.iY > mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY) {
mScrollPos.VisibleRect.iY = mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY;
}
// Redraw and set scroll pos (which will cause scroll pane to redraw)
CControl::Redraw();
mpScrollPane->SetScrollPos(mScrollPos);
SetValue(0);
}
break;
}
}
break;
case LeftButtonUp:
{
dynamic_cast<CWindow*>(GetParentWindow())->ReleaseMouseFocus();
mbScrolling = false;
return true;
}
break;
}
}
SRect rctHandle = GetHandleRect();
if (rctHandle.Inside(Pos)) {
// We hit the handle with the mouse
if (MouseMsg == LeftButtonDown) {
mMousePosOrg = Pos;
mScrollPosOrg = mScrollPos;
mScrollBarRectOrg = rctHandle;
dynamic_cast<CWindow*>(GetParentWindow())->GetMouseFocus(dynamic_cast<IControl*>(this));
mbScrolling = true;
return true;
}
}
else {
if (MouseMsg == LeftButtonDown) {
SRect RctThis;
GetRect(RctThis);
if (RctThis.Inside(Pos)) {
// We hit inside the control (but not the handle)
switch(mType) {
case TypeHorizontal:
{
// Calculate the mouse delta
tint iMouseDelta;
if (Pos.iX < rctHandle.iX) {
iMouseDelta = -rctHandle.iCX;
}
else {
iMouseDelta = rctHandle.iCX;
}
// Calculate where we want the handle to be
tint iHandlePosX = rctHandle.iX + iMouseDelta;
// Calculate movememt from mouse delta
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrowLeft;
pControl->GetRect(RctArrowLeft);
// Left-most possible handle position
SPos PosLeftMost(RctArrowLeft.iX + RctArrowLeft.iCX, RctArrowLeft.iY);
pControl = *it;
SPos PosRightArrow;
pControl->GetPos(PosRightArrow);
tint iMaxWidth = PosRightArrow.iX - PosLeftMost.iX;
// Calculate the relative width we occupy
tfloat64 fWidthRelative = mScrollPos.VisibleRect.iCX / (double)mScrollPos.AreaSize.iCX;
// Calculate the ralative position to be
tfloat64 fPositionRelative = (iHandlePosX - PosLeftMost.iX) / (iMaxWidth - (fWidthRelative * iMaxWidth));
// Update scrolling position
mScrollPos = mScrollPos;
mScrollPos.VisibleRect.iX = (int)((fPositionRelative * (mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX)) + 0.5f);
// Limit scrolling position
if (mScrollPos.VisibleRect.iX < 0) {
mScrollPos.VisibleRect.iX = 0;
}
if (mScrollPos.VisibleRect.iX > mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX) {
mScrollPos.VisibleRect.iX = mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX;
}
// Redraw and set scroll pos (which will cause scroll pane to redraw)
CControl::Redraw();
mpScrollPane->SetScrollPos(mScrollPos);
// Lasse, added 2008-04-17 - bug-fix, didn't fire listeners' EventValueChange
SetValue(0);
// .. Lasse
}
break;
case TypeVertical:
{
// Calculate the mouse delta
tint iMouseDelta;
if (Pos.iY < rctHandle.iY) {
iMouseDelta = -rctHandle.iCY;
}
else {
iMouseDelta = rctHandle.iCY;
}
// Calculate where we want the handle to be
tint iHandlePosY = rctHandle.iY + iMouseDelta;
// Calculate movememt from mouse delta
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrowTop;
pControl->GetRect(RctArrowTop);
// Top-most possible handle position
SPos PosTopMost(RctArrowTop.iX, RctArrowTop.iY + RctArrowTop.iCY);
pControl = *it;
SPos PosBottomArrow;
pControl->GetPos(PosBottomArrow);
tint iMaxHeight = PosBottomArrow.iY - PosTopMost.iY;
// Calculate the relative height we occupy
tfloat64 fHeightRelative = mScrollPos.VisibleRect.iCY / (double)mScrollPos.AreaSize.iCY;
// Calculate the ralative position to be
tfloat64 fPositionRelative = (iHandlePosY - PosTopMost.iY) / (iMaxHeight - (fHeightRelative * iMaxHeight));
// Update scrolling position
mScrollPos = mScrollPos;
mScrollPos.VisibleRect.iY = (int)((fPositionRelative * (mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY)) + 0.5f);
// Limit scrolling position
if (mScrollPos.VisibleRect.iY < 0) {
mScrollPos.VisibleRect.iY = 0;
}
if (mScrollPos.VisibleRect.iY > mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY) {
mScrollPos.VisibleRect.iY = mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY;
}
// Redraw and set scroll pos (which will cause scroll pane to redraw)
CControl::Redraw();
mpScrollPane->SetScrollPos(mScrollPos);
// Lasse, added 2008-04-17 - bug-fix, didn't fire listeners' EventValueChange
SetValue(0);
// .. Lasse
}
break;
}
}
}
}
return false;
}
void CScrollBar::EventValueChange(IControl *pSender, tint32 /*iValueNew*/)
{
// Lasse, add 2008-05-09
if ((mpScrollPane) && (pSender == mpScrollPane)) {
SScrollPos sp;
mpScrollPane->GetScrollPos(sp);
if (mScrollPos != sp) {
SRect rectTest1 = GetHandleRect();
SetScrollPos(sp, true);
//PositionControls();
Redraw(GetRect());
SRect rectTest2 = GetHandleRect();
int iDummy = 0;
}
return;
}
// .. Lasse
// Figure out which one of the controls it is
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
tint iDelta;
if (pSender == *it) {
// Up / left
iDelta = -10;
}
else {
// Down / right
iDelta = 10;
}
SRect rctHandle = GetHandleRect();
switch(mType) {
case TypeHorizontal:
{
// Calculate where we want the handle to be
tint iHandlePosX = rctHandle.iX + iDelta;
// Calculate movememt from mouse delta
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrowLeft;
pControl->GetRect(RctArrowLeft);
// Left-most possible handle position
SPos PosLeftMost(RctArrowLeft.iX + RctArrowLeft.iCX, RctArrowLeft.iY);
pControl = *it;
SPos PosRightArrow;
pControl->GetPos(PosRightArrow);
tint iMaxWidth = PosRightArrow.iX - PosLeftMost.iX;
// Calculate the relative width we occupy
tfloat64 fWidthRelative = mScrollPos.VisibleRect.iCX / (double)mScrollPos.AreaSize.iCX;
// Calculate the ralative position to be
tfloat64 fPositionRelative = (iHandlePosX - PosLeftMost.iX) / (iMaxWidth - (fWidthRelative * iMaxWidth));
// Update scrolling position
mScrollPos.VisibleRect.iX = (int)((fPositionRelative * (mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX)) + 0.5f);
// Limit scrolling position
if (mScrollPos.VisibleRect.iX < 0) {
mScrollPos.VisibleRect.iX = 0;
}
if (mScrollPos.VisibleRect.iX > mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX) {
mScrollPos.VisibleRect.iX = mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX;
}
// Redraw and set scroll pos (which will cause scroll pane to redraw)
CControl::Redraw();
mpScrollPane->SetScrollPos(mScrollPos);
}
break;
case TypeVertical:
{
// Calculate where we want the handle to be
tint iHandlePosY = rctHandle.iY + iDelta;
// Calculate movememt from mouse delta
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrowTop;
pControl->GetRect(RctArrowTop);
// Top-most possible handle position
SPos PosTopMost(RctArrowTop.iX, RctArrowTop.iY + RctArrowTop.iCY);
pControl = *it;
SPos PosBottomArrow;
pControl->GetPos(PosBottomArrow);
tint iMaxHeight = PosBottomArrow.iY - PosTopMost.iY;
// Calculate the relative height we occupy
tfloat64 fHeightRelative = mScrollPos.VisibleRect.iCY / (double)mScrollPos.AreaSize.iCY;
// Calculate the ralative position to be
tfloat64 fPositionRelative = (iHandlePosY - PosTopMost.iY) / (iMaxHeight - (fHeightRelative * iMaxHeight));
// Update scrolling position
mScrollPos.VisibleRect.iY = (int)((fPositionRelative * (mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY)) + 0.5f);
// Limit scrolling position
if (mScrollPos.VisibleRect.iY < 0) {
mScrollPos.VisibleRect.iY = 0;
}
if (mScrollPos.VisibleRect.iY > mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY) {
mScrollPos.VisibleRect.iY = mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY;
}
// Redraw and set scroll pos (which will cause scroll pane to redraw)
CControl::Redraw();
mpScrollPane->SetScrollPos(mScrollPos);
}
break;
}
}
SRect CScrollBar::GetHandleRect()
{
SRect rctHandle;
if (mpScrollPane)
mpScrollPane->GetScrollPos(mScrollPos);
switch(mType) {
case TypeHorizontal:
{
// The leftmost top-left point is 1 pixel to the right of the top-right point of the left arrow
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrow;
pControl->GetRect(RctArrow);
SPos Pos(RctArrow.iX + RctArrow.iCX, RctArrow.iY);
// Calculate the relative position (top-left point)
tint iDiff = mScrollPos.AreaSize.iCX - mScrollPos.VisibleRect.iCX;
tfloat64 fPositionRelative;
if (iDiff == 0) {
fPositionRelative = 0;
}
else {
fPositionRelative = (double)mScrollPos.VisibleRect.iX / iDiff;
}
// Calculate the maximum width of the handle
pControl = *it;
SPos PosRightArrow;
pControl->GetPos(PosRightArrow);
tint iMaxWidth = PosRightArrow.iX - Pos.iX;
// Calculate the relative width we occupy
tfloat64 fWidthRelative = mScrollPos.VisibleRect.iCX / (double)mScrollPos.AreaSize.iCX;
// Calculate the absolute size
rctHandle = SRect(Pos, SSize(0, 0));
rctHandle.iCY = mpBitmapSizes[BitmapCenterHandle].iCY;
rctHandle.iCX = (int)((fWidthRelative * iMaxWidth) + 0.5);
// Calculate the absolute position
rctHandle.iX += (int)((fPositionRelative * (iMaxWidth - rctHandle.iCX)) + 0.5);
if (rctHandle.iCX < mpBitmapSizes[BitmapLeftTopHandle].iCX + mpBitmapSizes[BitmapRightDownHandle].iCX) {
rctHandle.iCX = mpBitmapSizes[BitmapLeftTopHandle].iCX + mpBitmapSizes[BitmapRightDownHandle].iCX;
}
}
break;
case TypeVertical:
{
// The topmost top-left point is 1 pixel below the bottom-left point of the up arrow
std::list<IControl*>::iterator it = mControls.begin();
if (mControls.size() > 2) {
it++;
}
IControl* pControl = *it++;
SRect RctArrow;
pControl->GetRect(RctArrow);
SPos Pos(RctArrow.iX, RctArrow.iY + RctArrow.iCY);
// Calculate the relative position (top-left point)
tint iDiff = mScrollPos.AreaSize.iCY - mScrollPos.VisibleRect.iCY;
tfloat64 fPositionRelative;
if (iDiff == 0) {
fPositionRelative = 0;
}
else {
fPositionRelative = (double)mScrollPos.VisibleRect.iY / iDiff;
}
// Calculate the maximum height of the handle
pControl = *it;
SPos PosDownArrow;
pControl->GetPos(PosDownArrow);
tint iMaxHeight = PosDownArrow.iY - Pos.iY;
// Calculate the relative height we occupy
tfloat64 fHeightRelative = mScrollPos.VisibleRect.iCY / (double)mScrollPos.AreaSize.iCY;
// Calculate the absolute size
rctHandle = SRect(Pos, SSize(0, 0));
rctHandle.iCX = mpBitmapSizes[BitmapCenterHandle].iCX;
rctHandle.iCY = (int)((fHeightRelative * iMaxHeight) + 0.5);
// Calculate the absolute position
rctHandle.iY += (int)((fPositionRelative * (iMaxHeight - rctHandle.iCY)) + 0.5);
if (rctHandle.iCY < mpBitmapSizes[BitmapLeftTopHandle].iCY + mpBitmapSizes[BitmapRightDownHandle].iCY) {
rctHandle.iCY = mpBitmapSizes[BitmapLeftTopHandle].iCY + mpBitmapSizes[BitmapRightDownHandle].iCY;
}
}
break;
}
return rctHandle;
}