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+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_INK_EXTENSION_PARAMBOOL_H
+#define SEEN_INK_EXTENSION_PARAMBOOL_H
+/*
+ * Copyright (C) 2005-2007 Authors:
+ * Ted Gould <ted@gould.cx>
+ * Johan Engelen <johan@shouraizou.nl> *
+ * Jon A. Cruz <jon@joncruz.org>
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "parameter.h"
+
+namespace Gtk {
+class Widget;
+}
+
+namespace Inkscape {
+namespace XML {
+class Node;
+}
+
+namespace Extension {
+
+/**
+ * A boolean parameter.
+ */
+class ParamBool : public InxParameter {
+public:
+ ParamBool(Inkscape::XML::Node *xml, Inkscape::Extension::Extension *ext);
+
+ /**
+ * Returns the current state/value.
+ */
+ bool get() const;
+
+ /**
+ * A function to set the state/value.
+ * This function sets the internal value, but it also sets the value
+ * in the preferences structure. To put it in the right place pref_name() is used.
+ *
+ * @param in The value to set to
+ */
+ bool set(bool in);
+
+ /**
+ * Creates a bool check button for a bool parameter.
+ * Builds a hbox with a label and a check button in it.
+ */
+ Gtk::Widget *get_widget(sigc::signal<void> *changeSignal) override;
+
+ /**
+ * Appends 'true' or 'false'.
+ * @todo investigate. Returning a value that can then be appended would probably work better/safer.
+ */
+ std::string value_to_string() const override;
+
+private:
+ /** Internal value. */
+ bool _value = true;
+};
+
+} // namespace Extension
+} // namespace Inkscape
+
+#endif // SEEN_INK_EXTENSION_PARAMBOOL_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 :