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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 <set>
#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 "desktop-handles.h"
#include "layer-manager.h"
#include "prefs-utils.h"
#include "ui/view/view.h"
#include "selection.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, sigc::connection c) :
_mgr(mgr),
_obj(obj),
_connection(c),
_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;
sigc::connection _connection;
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::setCurrentLayer( SPObject* obj )
{
//g_return_if_fail( _desktop->currentRoot() );
if ( _desktop->currentRoot() ) {
_desktop->setCurrentLayer( obj );
if ( prefs_get_int_attribute_limited("options.selection", "layerdeselect", 1, 0, 1) ) {
sp_desktop_selection( _desktop )->clear();
}
}
}
void LayerManager::renameLayer( SPObject* obj, gchar const *label )
{
Glib::ustring incoming( label ? label : "" );
Glib::ustring result(incoming);
Glib::ustring base(incoming);
guint startNum = 1;
Glib::ustring::size_type pos = base.rfind('#');
if ( pos != Glib::ustring::npos ) {
gchar* numpart = g_strdup(base.substr(pos+1).c_str());
if ( numpart ) {
gchar* endPtr = 0;
guint64 val = g_ascii_strtoull( numpart, &endPtr, 10);
if ( ((val > 0) || (endPtr != numpart)) && (val < 65536) ) {
base.erase( pos );
result = base;
startNum = static_cast<int>(val);
}
g_free(numpart);
}
}
std::set<Glib::ustring> currentNames;
GSList const *layers=sp_document_get_resource_list(_document, "layer");
SPObject *root=_desktop->currentRoot();
if ( root ) {
for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
SPObject *layer=static_cast<SPObject *>(iter->data);
if ( layer != obj ) {
currentNames.insert( layer->label() ? Glib::ustring(layer->label()) : Glib::ustring() );
}
}
}
// Not sure if we need to cap it, but we'll just be paranoid for the moment
// Intentionally unsigned
guint endNum = startNum + 3000;
for ( guint i = startNum; (i < endNum) && (currentNames.find(result) != currentNames.end()); i++ ) {
gchar* suffix = g_strdup_printf("#%d", i);
result = base;
result += suffix;
g_free(suffix);
}
obj->setLabel( result.c_str() );
}
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::_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);
}
one->_connection.disconnect();
}
}
_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() ) {
sigc::connection connection = curr->connectModified(sigc::mem_fun(*this, &LayerManager::_objectModified));
LayerWatcher *eye = new LayerWatcher(this, curr, connection);
_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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