1 files changed, 104 insertions, 0 deletions
diff --git a/src/layer-manager.h b/src/layer-manager.h
new file mode 100644
index 0000000..9e5f83d
--- /dev/null
+++ b/src/layer-manager.h
@@ -0,0 +1,104 @@
+// 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>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_INKSCAPE_LAYER_MANAGER_H
+#define SEEN_INKSCAPE_LAYER_MANAGER_H
+
+#include <memory>
+#include <vector>
+#include <glibmm/ustring.h>
+
+#include "document-subset.h"
+#include "inkgc/gc-soft-ptr.h"
+#include "object/sp-item-group.h"
+
+class SPDesktop;
+class SPDocument;
+
+namespace Inkscape {
+    class ObjectHierarchy;
+
+class LayerManager : public DocumentSubset
+{
+public:
+    LayerManager(SPDesktop *desktop);
+    ~LayerManager() override;
+
+    void renameLayer( SPObject* obj, char const *label, bool uniquify );
+    Glib::ustring getNextLayerName( SPObject* obj, char const *label);
+
+    sigc::connection connectCurrentLayerChanged(const sigc::slot<void, SPGroup *> & slot) {
+        return _layer_changed_signal.connect(slot);
+    }
+
+    SPGroup *currentRoot() const;
+    SPGroup *currentLayer() const;
+
+    unsigned getLayerCount() const { return childCount(currentRoot()); }
+
+    void reset();
+    void setCurrentLayer(SPObject *object, bool clear=false);
+    void toggleLayerSolo(SPObject *object, bool force_hide = false);
+    void toggleHideAllLayers(bool hide);
+    void toggleLockAllLayers(bool lock);
+    void toggleLockOtherLayers(SPObject *object, bool force_lock = false);
+    SPObject *layerForObject(SPObject *object);
+    std::list<SPItem *> getAllLayers();
+    bool isLayer(SPObject *object) const;
+    static SPGroup *asLayer(SPObject *object);
+
+    bool isRoot() const { return currentLayer() == currentRoot(); }
+
+private:
+
+    void _objectModified( SPObject* obj, unsigned int flags );
+    void _setDocument(SPDesktop *, SPDocument *document);
+    void _rebuild();
+
+    void _selectedLayerChanged(SPObject *top, SPObject *bottom);
+    void _layer_activated(SPObject *layer);
+    void _layer_deactivated(SPObject *layer);
+
+    sigc::connection _layer_connection;
+    sigc::connection _activate_connection;
+    sigc::connection _deactivate_connection;
+    sigc::connection _document_connection;
+    sigc::connection _resource_connection;
+
+    SPDesktop *_desktop;
+    SPDocument *_document;
+
+    std::unique_ptr<Inkscape::ObjectHierarchy> _layer_hierarchy;
+    sigc::signal<void, SPGroup *> _layer_changed_signal;
+};
+
+enum LayerRelativePosition {
+    LPOS_ABOVE,
+    LPOS_BELOW,
+    LPOS_CHILD,
+};
+    
+SPObject *create_layer(SPObject *root, SPObject *layer, LayerRelativePosition position);
+SPObject *next_layer(SPObject *root, SPObject *layer);
+SPObject *previous_layer(SPObject *root, SPObject *layer);
+
+}
+
+#endif
+/*
+  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 :