1 files changed, 71 insertions, 0 deletions
diff --git a/src/ui/dialog/prototype.h b/src/ui/dialog/prototype.h
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--- /dev/null
+++ b/src/ui/dialog/prototype.h
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * A bare minimum example of deriving from Inkscape::UI:Widget::Panel.
+ *
+ * Author:
+ *   Tavmjong Bah
+ *
+ * Copyright (C) Tavmjong Bah <tavmjong@free.fr>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_PROTOTYPE_PANEL_H
+#define SEEN_PROTOTYPE_PANEL_H
+
+#ifdef DEBUG
+
+#include <iostream>
+
+#include "selection.h"
+#include "ui/dialog/dialog-base.h"
+
+// Only to display status.
+#include <gtkmm/label.h>
+
+namespace Inkscape {
+namespace UI {
+namespace Dialog {
+
+/**
+ * A panel that does almost nothing!
+ */
+class Prototype : public DialogBase
+{
+public:
+    ~Prototype() override { std::cout << "Prototype::~Prototype()" << std::endl; }
+    static Prototype &getInstance() { return *new Prototype(); }
+
+    void documentReplaced(SPDocument *document) override;
+    void selectionChanged(Inkscape::Selection *selection) override;
+
+private:
+    // No default constructor, noncopyable, nonassignable
+    Prototype();
+    Prototype(Prototype const &d) = delete;
+    Prototype operator=(Prototype const &d) = delete;
+
+    // Just for example
+    Gtk::Label *_label;
+    Gtk::Button _debug_button; // For printing to console.
+    virtual void on_click();
+};
+
+} // namespace Dialog
+} // namespace UI
+} // namespace Inkscape
+
+#endif // DEBUG
+
+#endif // SEEN_PROTOTYPE_PANEL_H
+
+/*
+  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 :