/*************************************************************************
Processing for drag-sizing the segment
*************************************************************************/
void ListHeaderSegment::doDragSizing(const Point& local_mouse)
{
float delta = local_mouse.d_x - d_dragPoint.d_x;
// store this so we can work out how much size actually changed
float orgWidth = d_pixelSize.d_width;
// ensure that we only size to the set constraints.
//
// NB: We are required to do this here due to our virtually unique sizing nature; the
// normal system for limiting the window size is unable to supply the information we
// require for updating our internal state used to manage the dragging, etc.
float maxWidth(d_maxSize.d_x.asAbsolute(System::getSingleton().getRenderer()->getDisplaySize().d_width));
float minWidth(d_minSize.d_x.asAbsolute(System::getSingleton().getRenderer()->getDisplaySize().d_width));
float newWidth = orgWidth + delta;
if (newWidth > maxWidth)
delta = maxWidth - orgWidth;
else if (newWidth < minWidth)
delta = minWidth - orgWidth;
// update segment area rect
URect area(d_area.d_min.d_x, d_area.d_min.d_y, d_area.d_max.d_x + UDim(0,PixelAligned(delta)), d_area.d_max.d_y);
setArea_impl(area.d_min, area.getSize());
// move the dragging point so mouse remains 'attached' to edge of segment
d_dragPoint.d_x += d_pixelSize.d_width - orgWidth;
WindowEventArgs args(this);
onSegmentSized(args);
}
/*************************************************************************
Handler method for when a segment is sized.
*************************************************************************/
bool ListHeader::segmentSizedHandler(const EventArgs& e)
{
layoutSegments();
// Fire segment sized event.
WindowEventArgs args(((WindowEventArgs&)e).window);
onSegmentSized(args);
return true;
}
/*************************************************************************
Set the width of the specified column.
*************************************************************************/
void ListHeader::setColumnWidth(uint column, const UDim& width)
{
if (column >= getColumnCount())
{
CEGUI_THROW(InvalidRequestException(
"specified column index is out of range for this ListHeader."));
}
else
{
d_segments[column]->setSize(USize(width, d_segments[column]->getSize().d_height));
layoutSegments();
// Fire segment sized event.
WindowEventArgs args(d_segments[column]);
onSegmentSized(args);
}
}
