Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 356 insertions, 0 deletions

diff --git a/src/layer-manager.cpp b/src/layer-manager.cpp
new file mode 100644
index 0000000..58dcf83
--- /dev/null
+++ b/src/layer-manager.cpp
@@ -0,0 +1,356 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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 v2+, read the file 'COPYING' for more information.
+ */
+
+#include <set>
+
+#include <sigc++/functors/mem_fun.h>
+#include <sigc++/adaptors/hide.h>
+
+
+#include "desktop.h"
+#include "document.h"
+#include "gc-finalized.h"
+#include "layer-manager.h"
+#include "selection.h"
+
+#include "inkgc/gc-managed.h"
+
+#include "object/sp-item-group.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"))
+    {}
+
+    void notifyChildAdded( Node &/*node*/, Node &/*child*/, Node */*prev*/ ) override {}
+    void notifyChildRemoved( Node &/*node*/, Node &/*child*/, Node */*prev*/ ) override {}
+    void notifyChildOrderChanged( Node &/*node*/, Node &/*child*/, Node */*old_prev*/, Node */*new_prev*/ ) override {}
+    void notifyContentChanged( Node &/*node*/, Util::ptr_shared /*old_content*/, Util::ptr_shared /*new_content*/ ) override {}
+    void notifyAttributeChanged( Node &/*node*/, GQuark name, Util::ptr_shared /*old_value*/, Util::ptr_shared /*new_value*/ ) override {
+        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 stringify_node(Node const &node);
+
+Util::ptr_shared 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 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 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 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(nullptr)
+{
+    _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 = nullptr;
+}
+
+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)) {
+            _desktop->getSelection()->clear();
+        }
+    }
+}
+
+/*
+ * Return a unique layer name similar to param label
+ * A unique name is made by substituting or appending the label's number suffix with
+ * the next unique larger number suffix not already used for any layer name
+ */
+Glib::ustring LayerManager::getNextLayerName( SPObject* obj, gchar const *label)
+{
+    Glib::ustring incoming( label ? label : "Layer 1" );
+    Glib::ustring result(incoming);
+    Glib::ustring base(incoming);
+    Glib::ustring split(" ");
+    guint startNum = 1;
+
+    gint pos = base.length()-1;
+    while (pos >= 0 && g_ascii_isdigit(base[pos])) {
+        pos-- ;
+    }
+
+    gchar* numpart = g_strdup(base.substr(pos+1).c_str());
+    if ( numpart ) {
+        gchar* endPtr = nullptr;
+        guint64 val = g_ascii_strtoull( numpart, &endPtr, 10);
+        if ( ((val > 0) || (endPtr != numpart)) && (val < 65536) ) {
+            base.erase( pos+1);
+            result = incoming;
+            startNum = static_cast<int>(val);
+            split = "";
+        }
+        g_free(numpart);
+    }
+
+    std::set<Glib::ustring> currentNames;
+    std::vector<SPObject *> layers = _document->getResourceList("layer");
+    SPObject *root=_desktop->currentRoot();
+    if ( root ) {
+        for (auto layer : layers) { 
+            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++ ) {
+        result = Glib::ustring::format(base, split, i);
+    }
+
+    return result;
+}
+
+void LayerManager::renameLayer( SPObject* obj, gchar const *label, bool uniquify )
+{
+    Glib::ustring incoming( label ? label : "" );
+    Glib::ustring result(incoming);
+
+    if (uniquify) {
+        result = getNextLayerName(obj, label);
+    }
+
+    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;
+
+    std::vector<SPObject *> layers = _document->getResourceList("layer");
+
+    SPObject *root=_desktop->currentRoot();
+    if ( root ) {
+        _addOne(root);
+
+        std::set<SPGroup*> layersToAdd;
+
+        for ( std::vector<SPObject *>::const_iterator iter = layers.begin(); iter != layers.end(); ++iter ) {
+            SPObject *layer = *iter;
+            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 &= ( std::find(layers.begin(),layers.end(),curr) != layers.end() );
+							// 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 (auto it : additional) {
+                    if ( !includes(it) ) {
+                        layersToAdd.insert(it);
+                    }
+                }
+            }
+        }
+
+        for (auto layer : layersToAdd) {
+            // 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() : nullptr;
+            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 :