1 files changed, 70 insertions, 0 deletions
diff --git a/src/ui/pref-pusher.cpp b/src/ui/pref-pusher.cpp
new file mode 100644
index 0000000..3b84ba6
--- /dev/null
+++ b/src/ui/pref-pusher.cpp
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "pref-pusher.h"
+
+#include <gtk/gtk.h>
+
+namespace Inkscape {
+namespace UI {
+PrefPusher::PrefPusher( GtkToggleAction *act, Glib::ustring const &path, void (*callback)(gpointer), gpointer cbData ) :
+    Observer(path),
+    act(act),
+    callback(callback),
+    cbData(cbData),
+    freeze(false)
+{
+    g_signal_connect_after( G_OBJECT(act), "toggled", G_CALLBACK(toggleCB), this);
+    freeze = true;
+    gtk_toggle_action_set_active( act, Inkscape::Preferences::get()->getBool(observed_path) );
+    freeze = false;
+
+    Inkscape::Preferences::get()->addObserver(*this);
+}
+
+PrefPusher::~PrefPusher()
+{
+    Inkscape::Preferences::get()->removeObserver(*this);
+}
+
+void PrefPusher::toggleCB( GtkToggleAction * /*act*/, PrefPusher *self )
+{
+    if (self) {
+        self->handleToggled();
+    }
+}
+
+void PrefPusher::handleToggled()
+{
+    if (!freeze) {
+        freeze = true;
+        Inkscape::Preferences::get()->setBool(observed_path, gtk_toggle_action_get_active( act ));
+        if (callback) {
+            (*callback)(cbData);
+        }
+        freeze = false;
+    }
+}
+
+void PrefPusher::notify(Inkscape::Preferences::Entry const &newVal)
+{
+    bool newBool = newVal.getBool();
+    bool oldBool = gtk_toggle_action_get_active(act);
+
+    if (!freeze && (newBool != oldBool)) {
+        gtk_toggle_action_set_active( act, newBool );
+    }
+}
+
+}
+}
+
+/*
+  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 :