GafferScene::PathMatcher expandDescendants( Context *context, const GafferScene::PathMatcher &paths, const ScenePlug *scene, int depth )
{
GafferScene::PathMatcherData *expandedPaths = const_cast<GafferScene::PathMatcherData *>( context->get<GafferScene::PathMatcherData>( g_expandedPathsName, nullptr ) );
if( !expandedPaths )
{
expandedPaths = new GafferScene::PathMatcherData();
context->set( g_expandedPathsName, expandedPaths );
}
GafferScene::PathMatcher &expanded = expandedPaths->writable();
bool needUpdate = false;
GafferScene::PathMatcher leafPaths;
// \todo: parallelize the walk
for( GafferScene::PathMatcher::Iterator it = paths.begin(), eIt = paths.end(); it != eIt; ++it )
{
needUpdate |= expandWalk( *it, scene, depth + 1, expanded, leafPaths );
}
if( needUpdate )
{
// We modified the expanded paths in place to avoid unecessary copying,
// so the context doesn't know they've changed. So we emit the changed
// signal ourselves
context->changedSignal()( context, g_expandedPathsName );
}
return leafPaths;
}
void expand( Context *context, const PathMatcher &paths, bool expandAncestors )
{
GafferScene::PathMatcherData *expandedPaths = const_cast<GafferScene::PathMatcherData *>( context->get<GafferScene::PathMatcherData>( g_expandedPathsName, nullptr ) );
if( !expandedPaths )
{
expandedPaths = new GafferScene::PathMatcherData();
context->set( g_expandedPathsName, expandedPaths );
}
GafferScene::PathMatcher &expanded = expandedPaths->writable();
bool needUpdate = false;
if( expandAncestors )
{
for( GafferScene::PathMatcher::RawIterator it = paths.begin(), eIt = paths.end(); it != eIt; ++it )
{
needUpdate |= expanded.addPath( *it );
}
}
else
{
for( GafferScene::PathMatcher::Iterator it = paths.begin(), eIt = paths.end(); it != eIt; ++it )
{
needUpdate |= expanded.addPath( *it );
}
}
if( needUpdate )
{
// We modified the expanded paths in place to avoid unecessary copying,
// so the context doesn't know they've changed. So we emit the changed
// signal ourselves
context->changedSignal()( context, g_expandedPathsName );
}
}
void SceneView::collapseSelection()
{
RenderableGadget::Selection &selection = m_renderableGadget->getSelection();
if( !selection.size() )
{
return;
}
set<string> pathsToSelect;
vector<const string *> pathsToDeselect;
GafferScene::PathMatcherData *expandedData = expandedPaths();
PathMatcher &expanded = expandedData->writable();
for( RenderableGadget::Selection::const_iterator it = selection.begin(), eIt = selection.end(); it != eIt; it++ )
{
if( !expanded.removePath( *it ) )
{
if( *it == "/" )
{
continue;
}
pathsToDeselect.push_back( &(*it) );
std::string parentPath( *it, 0, it->rfind( '/' ) );
if( parentPath == "" )
{
parentPath = "/";
}
expanded.removePath( parentPath );
pathsToSelect.insert( parentPath );
}
}
for( set<string>::const_iterator it = pathsToSelect.begin(), eIt = pathsToSelect.end(); it != eIt; it++ )
{
selection.insert( *it );
}
for( vector<const string *>::const_iterator it = pathsToDeselect.begin(), eIt = pathsToDeselect.end(); it != eIt; it++ )
{
selection.erase( **it );
}
// see comment in expandSelection().
getContext()->changedSignal()( getContext(), "ui:scene:expandedPaths" );
// and this will trigger a selection update also via contextChanged().
transferSelectionToContext();
}
void SceneView::collapseSelection()
{
PathMatcher &selection = const_cast<GafferScene::PathMatcherData *>( m_sceneGadget->getSelection() )->writable();
std::vector<string> toCollapse;
selection.paths( toCollapse );
if( !toCollapse.size() )
{
return;
}
GafferScene::PathMatcherData *expandedData = expandedPaths();
PathMatcher &expanded = expandedData->writable();
for( vector<string>::const_iterator it = toCollapse.begin(), eIt = toCollapse.end(); it != eIt; ++it )
{
/// \todo It would be nice to be able to get ScenePaths out of
/// PathMatcher::paths() directly.
ScenePlug::ScenePath path;
ScenePlug::stringToPath( *it, path );
if( !expanded.removePath( path ) )
{
if( path.size() <= 1 )
{
continue;
}
selection.removePath( path );
path.pop_back(); // now the parent path
expanded.removePath( path );
selection.addPath( path );
}
}
// See comment in expandSelection().
getContext()->changedSignal()( getContext(), "ui:scene:expandedPaths" );
// See comment in expandSelection().
transferSelectionToContext();
}