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/*
* Inkscape::LayerManager - a view of a document's layers, relative
* to a particular desktop
*
* Copyright 2006 MenTaLguY <mental@rydia.net>
* Abhishek Sharma
*
* 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 "preferences.h"
#include "ui/view/view.h"
#include "selection.h"
#include "sp-object.h"
#include "sp-item-group.h"
#include "xml/node.h"
#include "xml/node-observer.h"
#include "util/format.h"
// #include "debug/event-tracker.h"
// #include "debug/simple-event.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;
};
/*
namespace {
Util::ptr_shared<char> stringify_node(Node const &node);
Util::ptr_shared<char> stringify_obj(SPObject const &obj) {
gchar *string;
if (obj.id) {
string = g_strdup_printf("SPObject(%p)=%s repr(%p)", &obj, obj.id, obj.repr);
} else {
string = g_strdup_printf("SPObject(%p) repr(%p)", &obj, obj.repr);
}
Util::ptr_shared<char> result=Util::share_string(string);
g_free(string);
return result;
}
typedef Debug::SimpleEvent<Debug::Event::OTHER> DebugLayer;
class DebugLayerNote : public DebugLayer {
public:
DebugLayerNote(Util::ptr_shared<char> descr)
: DebugLayer(Util::share_static_string("layer-note"))
{
_addProperty("descr", descr);
}
};
class DebugLayerRebuild : public DebugLayer {
public:
DebugLayerRebuild()
: DebugLayer(Util::share_static_string("rebuild-layers"))
{
}
};
class DebugLayerObj : public DebugLayer {
public:
DebugLayerObj(SPObject const& obj, Util::ptr_shared<char> name)
: DebugLayer(name)
{
_addProperty("layer", stringify_obj(obj));
}
};
class DebugAddLayer : public DebugLayerObj {
public:
DebugAddLayer(SPObject const &obj)
: DebugLayerObj(obj, Util::share_static_string("add-layer"))
{
}
};
} // end of namespace
*/
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());
}
LayerManager::~LayerManager()
{
_layer_connection.disconnect();
_document_connection.disconnect();
_resource_connection.disconnect();
_document = 0;
}
void LayerManager::setCurrentLayer( SPObject* obj )
{
//g_return_if_fail( _desktop->currentRoot() );
if ( _desktop->currentRoot() ) {
_desktop->setCurrentLayer( obj );
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
if (prefs->getBool("/options/selection/layerdeselect", true)) {
sp_desktop_selection( _desktop )->clear();
}
}
}
void LayerManager::renameLayer( SPObject* obj, gchar const *label, bool uniquify )
{
Glib::ustring incoming( label ? label : "" );
Glib::ustring result(incoming);
Glib::ustring base(incoming);
guint startNum = 1;
if (uniquify) {
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=_document->getResourceList("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 = document->connectResourcesChanged("layer", sigc::mem_fun(*this, &LayerManager::_rebuild));
}
_rebuild();
}
void LayerManager::_objectModified( SPObject* obj, guint /*flags*/ )
{
_details_changed_signal.emit( obj );
}
void LayerManager::_rebuild() {
// Debug::EventTracker<DebugLayerRebuild> tracker1();
while ( !_watchers.empty() ) {
LayerWatcher* one = _watchers.back();
_watchers.pop_back();
if ( one->_obj ) {
Node* node = one->_obj->getRepr();
if ( node ) {
node->removeObserver(*one);
}
one->_connection.disconnect();
}
}
_clear();
if (!_document) // http://sourceforge.net/mailarchive/forum.php?thread_name=5747bce9a7ed077c1b4fc9f0f4f8a5e0%40localhost&forum_name=inkscape-devel
return;
GSList const *layers = _document->getResourceList("layer");
SPObject *root=_desktop->currentRoot();
if ( root ) {
_addOne(root);
std::set<SPGroup*> layersToAdd;
for ( GSList const *iter = layers; iter; iter = iter->next ) {
SPObject *layer = static_cast<SPObject *>(iter->data);
// Debug::EventTracker<DebugLayerNote> tracker(Util::format("Examining %s", layer->label()));
bool needsAdd = false;
std::set<SPGroup*> additional;
if ( root->isAncestorOf(layer) ) {
needsAdd = true;
for ( SPObject* curr = layer; curr && (curr != root) && needsAdd; curr = curr->parent ) {
if ( SP_IS_GROUP(curr) ) {
SPGroup* group = SP_GROUP(curr);
if ( group->layerMode() == SPGroup::LAYER ) {
// If we have a layer-group as the one or a parent, ensure it is listed as a valid layer.
needsAdd &= ( g_slist_find(const_cast<GSList *>(layers), curr) != NULL );
// XML Tree being used here directly while it shouldn't be...
if ( (!(group->getRepr())) || (!(group->getRepr()->parent())) ) {
needsAdd = false;
}
} else {
// If a non-layer group is a parent of layer groups, then show it also as a layer.
// TODO add the magic Inkscape group mode?
// XML Tree being used directly while it shouldn't be...
if ( group->getRepr() && group->getRepr()->parent() ) {
additional.insert(group);
} else {
needsAdd = false;
}
}
}
}
}
if ( needsAdd ) {
if ( !includes(layer) ) {
layersToAdd.insert(SP_GROUP(layer));
}
for ( std::set<SPGroup*>::iterator it = additional.begin(); it != additional.end(); ++it ) {
if ( !includes(*it) ) {
layersToAdd.insert(*it);
}
}
}
}
for ( std::set<SPGroup*>::iterator it = layersToAdd.begin(); it != layersToAdd.end(); ++it ) {
SPGroup* layer = *it;
// 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 = layer;
while ( higher && (higher->parent != root) ) {
higher = higher->parent;
}
Node const* node = higher ? higher->getRepr() : 0;
if ( node && node->parent() ) {
// Debug::EventTracker<DebugAddLayer> tracker(*layer);
sigc::connection connection = layer->connectModified(sigc::mem_fun(*this, &LayerManager::_objectModified));
LayerWatcher *eye = new LayerWatcher(this, layer, connection);
_watchers.push_back( eye );
layer->getRepr()->addObserver(*eye);
_addOne(layer);
}
}
}
}
// 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:fileencoding=utf-8:textwidth=99 :
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