added color widget (difference to the color button, is thats its not hidden behind a button so you can always see it. (#38)

src/widgets/widget_definitions.rs

@@ -22,6 +22,7 @@ pub(super) fn widget_to_gtk_widget(bargs: &mut BuilderArgs) -> Result<Option<gtk
         "calendar" => build_gtk_calendar(bargs)?.upcast(),
         "color-button" => build_gtk_color_button(bargs)?.upcast(),
         "expander" => build_gtk_expander(bargs)?.upcast(),
+        "color-chooser" => build_gtk_color_chooser(bargs)?.upcast(),
         _ => return Ok(None),
     };
     Ok(Some(gtk_widget))
@@ -178,6 +179,28 @@ fn build_gtk_color_button(bargs: &mut BuilderArgs) -> Result<gtk::ColorButton> {
     Ok(gtk_widget)
 }
 
+/// @widget color-chooser
+fn build_gtk_color_chooser(bargs: &mut BuilderArgs) -> Result<gtk::ColorChooserWidget> {
+    let gtk_widget = gtk::ColorChooserWidget::new();
+    let on_change_handler_id: Rc<RefCell<Option<glib::SignalHandlerId>>> = Rc::new(RefCell::new(None));
+    resolve_block!(bargs, gtk_widget, {
+        // @prop use-alpha - bool to wether or not use alpha
+        prop(use_alpha: as_bool) {gtk_widget.set_use_alpha(use_alpha);},
+
+        // @prop onchange - runs the code when the color was selected
+        prop(onchange: as_string) {
+            let old_id = on_change_handler_id.replace(Some(
+                gtk_widget.connect_color_activated(move |_a, gtk_widget| {
+                    run_command(&onchange, gtk_widget);
+                })
+            ));
+            old_id.map(|id| gtk_widget.disconnect(id));
+        }
+    });
+
+    Ok(gtk_widget)
+}
+
 /// @widget scale extends range
 /// @desc a slider.
 fn build_gtk_scale(bargs: &mut BuilderArgs) -> Result<gtk::Scale> {