//----------------------------------------------------------------------------//
bool ScrollablePane::handleContentAreaChange(const EventArgs&)
{
// get updated extents of the content
const Rectf contentArea(getScrolledContainer()->getContentArea());
// calculate any change on the top and left edges.
const float xChange = contentArea.d_min.d_x - d_contentRect.d_min.d_x;
const float yChange = contentArea.d_min.d_y - d_contentRect.d_min.d_y;
// store new content extents information
d_contentRect = contentArea;
configureScrollbars();
// update scrollbar positions (which causes container pane to be moved as needed).
Scrollbar* const horzScrollbar = getHorzScrollbar();
horzScrollbar->setScrollPosition(horzScrollbar->getScrollPosition() - xChange);
Scrollbar* const vertScrollbar = getVertScrollbar();
vertScrollbar->setScrollPosition(vertScrollbar->getScrollPosition() - yChange);
// this call may already have been made if the scroll positions changed. The call
// is required here for cases where the top/left 'bias' has changed; in which
// case the scroll position notification may or may not have been fired.
if (xChange || yChange)
updateContainerPosition();
// fire event
WindowEventArgs args(this);
onContentPaneChanged(args);
return true;
}
bool ScrollablePane::handleContentAreaChange(const EventArgs& e)
{
assert(d_container != 0);
assert(d_horzScrollbar != 0);
assert(d_vertScrollbar != 0);
// get updated extents of the content
Rect contentArea(d_container->getContentArea());
// calculate any change on the top and left edges.
float xChange = contentArea.d_left - d_contentRect.d_left;
float yChange = contentArea.d_top - d_contentRect.d_top;
// store new content extents information
d_contentRect = contentArea;
configureScrollbars();
// update scrollbar positions (which causes container pane to be moved as needed).
d_horzScrollbar->setScrollPosition(d_horzScrollbar->getScrollPosition() - xChange);
d_vertScrollbar->setScrollPosition(d_vertScrollbar->getScrollPosition() - yChange);
// this call may already have been made if the scroll positions changed. The call
// is required here for cases where the top/left 'bias' has changed; in which
// case the scroll position notification may or may not have been fired.
if (xChange || yChange)
{
updateContainerPosition();
}
// fire event
WindowEventArgs args(this);
onContentPaneChanged(args);
return true;
}
