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/*
* Inkscape::LayerManager - a view of a document's layers, relative
* to a particular desktop
*
* Copyright 2006 MenTaLguY <mental@rydia.net>
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include <sigc++/functors/mem_fun.h>
#include <sigc++/adaptors/hide.h>
#include "gc-managed.h"
#include "gc-finalized.h"
#include "document.h"
#include "desktop.h"
#include "layer-manager.h"
#include "ui/view/view.h"
#include "sp-object.h"
#include "xml/node.h"
#include "xml/node-observer.h"
namespace Inkscape {
using Inkscape::XML::Node;
class LayerManager::LayerWatcher : public Inkscape::XML::NodeObserver {
public:
LayerWatcher(LayerManager* mgr, SPObject* obj) :
_mgr(mgr),
_obj(obj),
_lockedAttr(g_quark_from_string("sodipodi:insensitive")),
_labelAttr(g_quark_from_string("inkscape:label"))
{}
virtual void notifyChildAdded( Node &node, Node &child, Node *prev ) {}
virtual void notifyChildRemoved( Node &node, Node &child, Node *prev ) {}
virtual void notifyChildOrderChanged( Node &node, Node &child, Node *old_prev, Node *new_prev ) {}
virtual void notifyContentChanged( Node &node, Util::ptr_shared<char> old_content, Util::ptr_shared<char> new_content ) {}
virtual void notifyAttributeChanged( Node &node, GQuark name, Util::ptr_shared<char> old_value, Util::ptr_shared<char> new_value ) {
if ( name == _lockedAttr || name == _labelAttr ) {
if ( _mgr && _obj ) {
_mgr->_objectModified( _obj, 0 );
}
}
}
LayerManager* _mgr;
SPObject* _obj;
GQuark _lockedAttr;
GQuark _labelAttr;
};
LayerManager::LayerManager(SPDesktop *desktop)
: _desktop(desktop), _document(NULL)
{
_layer_connection = desktop->connectCurrentLayerChanged( sigc::mem_fun(*this, &LayerManager::_selectedLayerChanged) );
sigc::bound_mem_functor1<void, Inkscape::LayerManager, SPDocument*> first = sigc::mem_fun(*this, &LayerManager::_setDocument);
// This next line has problems on gcc 4.0.2
sigc::slot<void, SPDocument*> base2 = first;
sigc::slot<void,SPDesktop*,SPDocument*> slot2 = sigc::hide<0>( base2 );
_document_connection = desktop->connectDocumentReplaced( slot2 );
_setDocument(desktop->doc());
}
void LayerManager::_setDocument(SPDocument *document) {
if (_document) {
_resource_connection.disconnect();
}
_document = document;
if (document) {
_resource_connection = sp_document_resources_changed_connect(document, "layer", sigc::mem_fun(*this, &LayerManager::_rebuild));
}
_rebuild();
}
void LayerManager::_objectModifiedCB( SPObject* obj, guint flags, LayerManager* mgr )
{
mgr->_objectModified( obj, flags );
}
void LayerManager::_objectModified( SPObject* obj, guint flags )
{
_details_changed_signal.emit( obj );
}
void LayerManager::_rebuild() {
while ( !_watchers.empty() ) {
LayerWatcher* one = _watchers.back();
_watchers.pop_back();
if ( one->_obj ) {
Node* node = SP_OBJECT_REPR(one->_obj);
if ( node ) {
node->removeObserver(*one);
}
}
}
_clear();
GSList const *layers=sp_document_get_resource_list(_document, "layer");
SPObject *root=_desktop->currentRoot();
if ( root ) {
_addOne(root);
for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
SPObject *layer=static_cast<SPObject *>(iter->data);
for ( SPObject* curr = layer; curr && (curr != root) ; curr = SP_OBJECT_PARENT(curr) ) {
if ( (curr != root) && root->isAncestorOf(curr) && !includes(curr) ) {
// Filter out objects in the middle of being deleted
// Such may have been the cause of bug 1339397.
// See http://sourceforge.net/tracker/index.php?func=detail&aid=1339397&group_id=93438&atid=604306
SPObject const *higher = curr;
while ( higher && (SP_OBJECT_PARENT(higher) != root) ) {
higher = SP_OBJECT_PARENT(higher);
}
Node* node = higher ? SP_OBJECT_REPR(higher) : 0;
if ( node && node->parent() ) {
g_signal_connect( G_OBJECT(curr), "modified", G_CALLBACK( _objectModifiedCB ), this );
LayerWatcher* eye = new LayerWatcher(this, curr);
_watchers.push_back( eye );
SP_OBJECT_REPR(curr)->addObserver(*eye);
_addOne(curr);
}
}
}
}
}
}
// Connected to the desktop's CurrentLayerChanged signal
void LayerManager::_selectedLayerChanged(SPObject *layer)
{
// notify anyone who's listening to this instead of directly to the desktop
_layer_changed_signal.emit(layer);
}
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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