1 files changed, 60 insertions, 0 deletions
diff --git a/src/display/control/canvas-temporary-item.h b/src/display/control/canvas-temporary-item.h
new file mode 100644
index 0000000..b2457c7
--- /dev/null
+++ b/src/display/control/canvas-temporary-item.h
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef INKSCAPE_CANVAS_TEMPORARY_ITEM_H
+#define INKSCAPE_CANVAS_TEMPORARY_ITEM_H
+
+/*
+ * Authors:
+ *   Johan Engelen
+ *
+ * Copyright (C) Johan Engelen 2008 <j.b.c.engelen@utwente.nl>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+
+#include <sigc++/signal.h>
+
+namespace Inkscape {
+
+class CanvasItem;
+
+namespace Display {
+
+/**
+ * Provides a class to put a canvasitem temporarily on-canvas.
+ */
+class TemporaryItem  {
+public:
+    TemporaryItem(Inkscape::CanvasItem *item, unsigned int lifetime, bool destroy_on_deselect = false);
+    virtual ~TemporaryItem();
+
+    TemporaryItem(const TemporaryItem&) = delete;
+    TemporaryItem& operator=(const TemporaryItem&) = delete;
+
+    sigc::signal<void, TemporaryItem *> signal_timeout;
+
+protected:
+    friend class TemporaryItemList;
+
+    Inkscape::CanvasItem   * canvasitem = nullptr;   /** The item we are holding on to */
+    unsigned int timeout_id;     /** ID by which glib knows the timeout event */
+    bool destroy_on_deselect; // only destroy when parent item is deselected, not when mouse leaves
+
+    static int _timeout(void* data); ///< callback for when lifetime expired
+};
+
+} //namespace Display
+} //namespace Inkscape
+
+#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 :