void CGUIBaseContainer::ScrollToOffset(int offset)
{
int minOffset, maxOffset;
if(GetOffsetRange(minOffset, maxOffset))
offset = std::max(minOffset, std::min(offset, maxOffset));
float size = (m_layout) ? m_layout->Size(m_orientation) : 10.0f;
int range = ScrollCorrectionRange();
if (offset * size < m_scroller.GetValue() && m_scroller.GetValue() - offset * size > size * range)
{ // scrolling up, and we're jumping more than 0.5 of a screen
m_scroller.SetValue((offset + range) * size);
}
if (offset * size > m_scroller.GetValue() && offset * size - m_scroller.GetValue() > size * range)
{ // scrolling down, and we're jumping more than 0.5 of a screen
m_scroller.SetValue((offset - range) * size);
}
m_scroller.ScrollTo(offset * size);
m_lastScrollStartTimer.StartZero();
if (!m_wasReset)
{
SetContainerMoving(offset - GetOffset());
if (m_scroller.IsScrolling())
m_scrollTimer.Start();
else
m_scrollTimer.Stop();
}
SetOffset(offset);
}
void CGUIFixedListContainer::ValidateOffset()
{
if (!m_layout) return;
// ensure our fixed cursor position is valid
if (m_fixedCursor >= m_itemsPerPage)
m_fixedCursor = m_itemsPerPage - 1;
if (m_fixedCursor < 0)
m_fixedCursor = 0;
// compute our minimum and maximum cursor positions
int minCursor, maxCursor;
GetCursorRange(minCursor, maxCursor);
// assure our cursor is between these limits
SetCursor(std::max(GetCursor(), minCursor));
SetCursor(std::min(GetCursor(), maxCursor));
int minOffset, maxOffset;
GetOffsetRange(minOffset, maxOffset);
// and finally ensure our offset is valid
// don't validate offset if we are scrolling in case the tween image exceed <0, 1> range
if (GetOffset() > maxOffset || (!m_scroller.IsScrolling() && m_scroller.GetValue() > maxOffset * m_layout->Size(m_orientation)))
{
SetOffset(std::max(-minCursor, maxOffset));
m_scroller.SetValue(GetOffset() * m_layout->Size(m_orientation));
}
if (GetOffset() < minOffset || (!m_scroller.IsScrolling() && m_scroller.GetValue() < minOffset * m_layout->Size(m_orientation)))
{
SetOffset(minOffset);
m_scroller.SetValue(GetOffset() * m_layout->Size(m_orientation));
}
}
void CGUIListContainer::ValidateOffset()
{
if (!m_layout) return;
// first thing is we check the range of our offset
// don't validate offset if we are scrolling in case the tween image exceed <0, 1> range
int minOffset, maxOffset;
GetOffsetRange(minOffset, maxOffset);
if (GetOffset() > maxOffset || (!m_scroller.IsScrolling() && m_scroller.GetValue() > maxOffset * m_layout->Size(m_orientation)))
{
SetOffset(std::max(0, maxOffset));
m_scroller.SetValue(GetOffset() * m_layout->Size(m_orientation));
}
if (GetOffset() < 0 || (!m_scroller.IsScrolling() && m_scroller.GetValue() < 0))
{
SetOffset(0);
m_scroller.SetValue(0);
}
}
