draft of layer manager

(bzr r326)

1 files changed, 71 insertions, 0 deletions

diff --git a/src/layer-manager.cpp b/src/layer-manager.cpp
new file mode 100644
index 000000000..01af95424
--- /dev/null
+++ b/src/layer-manager.cpp
@@ -0,0 +1,71 @@
+/*
+ * 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"
+
+namespace Inkscape {
+
+LayerManager::LayerManager(SPDesktop *desktop)
+: _desktop(desktop), _document(NULL)
+{
+    _layer_connection = desktop->connectCurrentLayerChanged(sigc::hide<0>(sigc::mem_fun(*this, &LayerManager::_rebuild)));
+    _document_connection = desktop->connectDocumentReplaced(sigc::hide<0>(sigc::mem_fun(*this, &LayerManager::_setDocument)));
+    _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::_rebuild() {
+    _clear();
+    GSList const *layers=sp_document_get_resource_list(_document, "layers");
+    for ( GSList const *iter=layers ; iter ; iter = iter->next ) {
+        SPObject *layer=static_cast<SPObject *>(iter->data);
+        _addOne(layer);
+    }
+    SPObject *root=_desktop->currentRoot();
+    SPObject *layer=_desktop->currentLayer();
+    for ( ; layer ; layer = SP_OBJECT_PARENT(layer) ) {
+        if (!includes(layer)) {
+            _addOne(layer);
+        }
+        if ( layer == root ) {
+            break;
+        }
+    }
+}
+
+}
+
+/*
+  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 :