1 files changed, 141 insertions, 0 deletions
diff --git a/src/extension/prefdialog/parameter-bool.cpp b/src/extension/prefdialog/parameter-bool.cpp
new file mode 100644
index 0000000..609e727
--- /dev/null
+++ b/src/extension/prefdialog/parameter-bool.cpp
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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-bool.h"
+
+#include <gtkmm/box.h>
+#include <gtkmm/checkbutton.h>
+
+#include "xml/node.h"
+#include "extension/extension.h"
+#include "preferences.h"
+
+namespace Inkscape {
+namespace Extension {
+
+ParamBool::ParamBool(Inkscape::XML::Node *xml, Inkscape::Extension::Extension *ext)
+    : InxParameter(xml, ext)
+{
+    // get value
+    if (xml->firstChild()) {
+        const char *value = xml->firstChild()->content();
+        if (value) {
+            if (!strcmp(value, "true")) {
+                _value = true;
+            } else if (!strcmp(value, "false")) {
+                _value = false;
+            } else {
+                g_warning("Invalid default value ('%s') for parameter '%s' in extension '%s'",
+                          value, _name, _extension->get_id());
+            }
+        }
+    }
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    _value = prefs->getBool(pref_name(), _value);
+}
+
+bool ParamBool::set(bool in)
+{
+    _value = in;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    prefs->setBool(pref_name(), _value);
+
+    return _value;
+}
+
+bool ParamBool::get() const
+{
+    return _value;
+}
+
+/**
+ * A check button which is Param aware.  It works with the
+ * parameter to change it's value as the check button changes
+ * value.
+ */
+class ParamBoolCheckButton : public Gtk::CheckButton {
+public:
+    /**
+     * Initialize the check button.
+     * This function sets the value of the checkbox to be that of the
+     * parameter, and then sets up a callback to \c on_toggle.
+     *
+     * @param  param  Which parameter to adjust on changing the check button
+     */
+    ParamBoolCheckButton(ParamBool *param, char *label, sigc::signal<void> *changeSignal)
+        : Gtk::CheckButton(label)
+        , _pref(param)
+        , _changeSignal(changeSignal) {
+        this->set_active(_pref->get());
+        this->signal_toggled().connect(sigc::mem_fun(this, &ParamBoolCheckButton::on_toggle));
+        return;
+    }
+
+    /**
+     * A function to respond to the check box changing.
+     * Adjusts the value of the preference to match that in the check box.
+     */
+    void on_toggle ();
+
+private:
+    /** Param to change. */
+    ParamBool *_pref;
+    sigc::signal<void> *_changeSignal;
+};
+
+void ParamBoolCheckButton::on_toggle()
+{
+    _pref->set(this->get_active());
+    if (_changeSignal != nullptr) {
+        _changeSignal->emit();
+    }
+    return;
+}
+
+std::string ParamBool::value_to_string() const
+{
+    if (_value) {
+        return "true";
+    }
+    return "false";
+}
+
+Gtk::Widget *ParamBool::get_widget(sigc::signal<void> *changeSignal)
+{
+    if (_hidden) {
+        return nullptr;
+    }
+
+    auto hbox = Gtk::manage(new Gtk::Box(Gtk::ORIENTATION_HORIZONTAL, GUI_PARAM_WIDGETS_SPACING));
+    hbox->set_homogeneous(false);
+
+    ParamBoolCheckButton * checkbox = Gtk::manage(new ParamBoolCheckButton(this, _text, changeSignal));
+    checkbox->show();
+    hbox->pack_start(*checkbox, false, false);
+
+    hbox->show();
+
+    return dynamic_cast<Gtk::Widget *>(hbox);
+}
+
+}  /* namespace Extension */
+}  /* namespace Inkscape */
+
+/*
+  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 :