void ScrollBar::updateScrollBarLayout(void)
{
if(getRangeModel() != NULL && getScrollBar() != NULL)
{
Vec2f Size(calculateScrollBarSize());
if(getScrollBar()->getSize() != Size)
{
getScrollBar()->setSize(Size);
}
Pnt2f Pos(calculateScrollBarPosition());
if(getScrollBar()->getPosition() != Pos)
{
getScrollBar()->setPosition(Pos);
}
}
}
LRESULT ListCtrl::onKeyDown( UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled )
{
if (getScrollBar(SB_VERT) != NULL)
{
LONG nHeight = 0;
LONG nTotal = getEndRow() + 1;
LONG nPos = 0;
for (LONG n = 0; n < nTotal; n++)
{
nPos += getRowHeight(n);
}
getScrollBar(SB_VERT)->setPos(nPos);
BOOL bh;
getScrollBar(SB_VERT)->onSize(0, 0, 0, bh);
}
return 1;
}
void ScrollBar::handleScrollBarMousePressed(MouseEventDetails* const e)
{
if(getEnabled() && e->getButton() == MouseEventDetails::BUTTON1)
{
_ScrollBarInitialMousePosition = ViewportToComponent(e->getLocation(), this, e->getViewport());
_ScrollBarInitialScrollBarPosition = getScrollBar()->getPosition();
_ScrollBarDragMouseDraggedConnection = getParentWindow()->getParentDrawingSurface()->getEventProducer()->connectMouseDragged(boost::bind(&ScrollBar::handleScrollBarDragMouseDragged, this, _1));
_ScrollBarDragMouseReleasedConnection = getParentWindow()->getParentDrawingSurface()->getEventProducer()->connectMouseReleased(boost::bind(&ScrollBar::handleScrollBarDragMouseReleased, this, _1));
}
}
void ScrollBar::handleScrollFieldAction(ActionEventDetails* const e)
{
if(getEnabled())
{
UInt32 AxisIndex(0);
if(getOrientation() == ScrollBar::HORIZONTAL_ORIENTATION ) AxisIndex = 0;
else AxisIndex = 1;
Pnt2f ComponentMousePosition(DrawingSurfaceToComponent(getParentWindow()->getParentDrawingSurface()->getMousePosition(), this));
//Is Mouse Major axis on the min or max side of the scroll bar
if(ComponentMousePosition[AxisIndex] < getScrollBar()->getPosition()[AxisIndex])
{
//Move the Bounded range model one block in the Min direction
scrollBlock(-1);
}
else if(ComponentMousePosition[AxisIndex] >
(getScrollBar()->getPosition()[AxisIndex] + getScrollBar()->getSize()[AxisIndex]))
{
//Move the Bounded range model one block in the Max direction
scrollBlock(1);
}
}
}
Int32 ScrollBar::calculateValueFromPosition(const Pnt2f Position) const
{
Int32 Value;
UInt16 MajorAxis, MinorAxis;
if(getOrientation() == ScrollBar::VERTICAL_ORIENTATION)
{
MajorAxis = 1;
}
else
{
MajorAxis = 0;
}
MinorAxis = (MajorAxis+1)%2;
Value = (Position[MajorAxis] - getScrollField()->getPosition()[MajorAxis])/(getScrollField()->getSize()[MajorAxis] - getScrollBar()->getSize()[MajorAxis])*static_cast<Real32>(getMaximum() - getMinimum() - getExtent()) + getMinimum();
return Value;
}
Pnt2f ScrollBar::calculateScrollBarPosition(void) const
{
Pnt2f Position;
UInt16 MajorAxis, MinorAxis;
if(getOrientation() == ScrollBar::VERTICAL_ORIENTATION)
{
MajorAxis = 1;
}
else
{
MajorAxis = 0;
}
MinorAxis = (MajorAxis+1)%2;
Position[MajorAxis] = getScrollField()->getPosition()[MajorAxis] +
(static_cast<Real32>(getValue() - getMinimum())/static_cast<Real32>(getMaximum() - getMinimum() - getExtent())) * (getScrollField()->getSize()[MajorAxis] - getScrollBar()->getSize()[MajorAxis]);
Position[MinorAxis] = getScrollField()->getPosition()[MinorAxis];
return Position;
}
