screen: theme doesn't need a restart anymore

ks_includes/KlippyGtk.py

@@ -161,6 +161,7 @@ class KlippyGtk:
         if label is not None:
             b.set_label(label.replace("\n", " "))
         if image_name is not None:
+            b.set_name(image_name)
             if scale is None:
                 scale = self.button_image_scale
             if label is None:

panels/base_panel.py

@@ -12,7 +12,7 @@ from ks_includes.screen_panel import ScreenPanel
 
 
 class BasePanel(ScreenPanel):
-    def __init__(self, screen, title):
+    def __init__(self, screen, title=None):
         super().__init__(screen, title)
         self.current_panel = None
         self.time_min = -1
@@ -111,6 +111,16 @@ class BasePanel(ScreenPanel):
 
         self.update_time()
 
+    def reload_icons(self):
+        button: Gtk.Button
+        for button in self.action_bar.get_children():
+            img = button.get_image()
+            name = button.get_name()
+            pixbuf = img.get_pixbuf()
+            width = pixbuf.get_width()
+            height = pixbuf.get_height()
+            button.set_image(self._gtk.Image(name, width, height))
+
     def show_heaters(self, show=True):
         try:
             for child in self.control['temp_box'].get_children():

screen.py

@@ -139,9 +139,9 @@ class KlipperScreen(Gtk.Window):
         self.gtk = KlippyGtk(self)
         self.base_css = ""
         self.load_base_styles()
-        self.change_theme(self.theme)
         self.set_icon_from_file(os.path.join(klipperscreendir, "styles", "icon.svg"))
-        self.base_panel = BasePanel(self, title="Base Panel")
+        self.base_panel = BasePanel(self)
+        self.change_theme(self.theme)
         self.add(self.base_panel.main_grid)
         self.show_all()
         min_ver = (3, 8)
@@ -329,6 +329,10 @@ class KlipperScreen(Gtk.Window):
             logging.exception(f"Error attaching panel:\n{e}\n\n{traceback.format_exc()}")
 
     def attach_panel(self, panel):
+        if panel in self.panels_reinit:
+            # this happens when the first panel needs a reinit
+            self.reload_panels()
+            return
         self.base_panel.add_content(self.panels[panel])
         logging.debug(f"Current panel hierarchy: {' > '.join(self._cur_panels)}")
         while len(self.panels[panel].menu) > 1:
@@ -501,6 +505,7 @@ class KlipperScreen(Gtk.Window):
         screen = Gdk.Screen.get_default()
         if self.style_provider:
             Gtk.StyleContext.remove_provider_for_screen(screen, self.style_provider)
+        self.style_provider = Gtk.CssProvider()
         self.style_provider.load_from_data(css_data.encode())
         Gtk.StyleContext.add_provider_for_screen(
             screen,
@@ -516,6 +521,11 @@ class KlipperScreen(Gtk.Window):
         self.style_options.update(theme_options)
         self.gtk.color_list = self.style_options['graph_colors']
         self.update_style_provider(theme_css)
+        self.reload_icon_theme()
+
+    def reload_icon_theme(self):
+        self.panels_reinit = list(self.panels)
+        self.base_panel.reload_icons()
 
     def _go_to_submenu(self, widget, name):
         logging.info(f"#### Go to submenu {name}")