add module preset label to module header

Author: zisoft

data/themes/darktable-elegant-highcontrast.css

@@ -37,5 +37,5 @@
 @define-color graph_fg_active @grey_100;
 @define-color graph_grid @grey_00;
 
-#iop-panel-label, #lib-panel-label, #iop-module-name { color: @fg_color; }
+#iop-panel-label, #lib-panel-label, #iop-module-name, #lib-module-name { color: @fg_color; }
 #module-header .toggle:checked { color: @fg_color; }

data/themes/darktable-icons-highcontrast.css

@@ -37,5 +37,5 @@
 @define-color graph_fg_active @grey_100;
 @define-color graph_grid @grey_00;
 
-#iop-panel-label, #lib-panel-label, #iop-module-name { color: @fg_color; }
+#iop-panel-label, #lib-panel-label, #iop-module-name, #lib-module-name { color: @fg_color; }
 #module-header .toggle:checked { color: @fg_color; }

data/themes/darktable.css

@@ -600,7 +600,8 @@ dialog .sidebar row:selected:hover label,
 }
 
 #snapshot-button entry,
-#iop-module-name
+#iop-module-name,
+#lib-module-name
 {
   font-weight: lighter;
   font-family: sans-serif, "Arial Unicode MS";

src/libs/lib.c

@@ -403,8 +403,15 @@ void dt_lib_presets_update(const gchar *preset,
 static void _menuitem_activate_preset(GtkMenuItem *menuitem,
                                       dt_lib_module_info_t *minfo)
 {
-  dt_lib_presets_apply(g_object_get_data(G_OBJECT(menuitem), "dt-preset-name"),
-                       minfo->plugin_name, minfo->version);
+  gchar *preset_name = g_object_get_data(G_OBJECT(menuitem), "dt-preset-name");
+  gboolean res = dt_lib_presets_apply(preset_name,
+                                      minfo->plugin_name, minfo->version);
+
+  if(res){
+    gchar *preset_label_text = g_strdup_printf("• %s", preset_name);
+    gtk_label_set_text(GTK_LABEL(minfo->module->preset_label), preset_label_text);
+    g_free(preset_label_text);
+  }
 }
 
 static gboolean _menuitem_button_preset(GtkMenuItem *menuitem,
@@ -892,6 +899,7 @@ static gboolean _lib_gui_reset_callback(GtkButton *button,
 {
   dt_lib_module_t *module = (dt_lib_module_t *)user_data;
   module->gui_reset(module);
+  gtk_label_set_text(GTK_LABEL(module->preset_label), "");
   return TRUE;
 }
 
@@ -1275,6 +1283,13 @@ GtkWidget *dt_lib_gui_get_expander(dt_lib_module_t *module)
   dt_action_define(&module->actions, NULL, NULL, label_evb, NULL);
   gtk_box_pack_start(GTK_BOX(header), label_evb, FALSE, FALSE, 0);
 
+  module->preset_label = gtk_label_new(NULL);
+  gtk_widget_set_name(module->preset_label, "lib-module-name");
+  gtk_label_set_ellipsize(GTK_LABEL(module->preset_label), PANGO_ELLIPSIZE_MIDDLE);
+  gtk_widget_set_valign(module->preset_label, GTK_ALIGN_BASELINE);
+  g_object_set(G_OBJECT(module->preset_label), "xalign", 0.0, (gchar *)0);
+  gtk_box_pack_start(GTK_BOX(header), module->preset_label, FALSE, FALSE, 0);
+
   /* add preset button if module has implementation */
   module->presets_button = dtgtk_button_new(dtgtk_cairo_paint_presets, 0, NULL);
   gtk_widget_set_tooltip_text(module->presets_button, _("presets and preferences"));

src/libs/lib.h

@@ -116,6 +116,7 @@ typedef struct dt_lib_module_t
   gboolean gui_uptodate;
 
   GtkWidget *arrow;
+  GtkWidget *preset_label;
   GtkWidget *reset_button;
   GtkWidget *presets_button;