GTK 3.20/22: fix warnings from tasklist buttons

Force padding and margins to zero. Borders don't seem to throw warnings here

1 files changed, 15 insertions, 0 deletions

diff --git a/applets/wncklet/window-list.c b/applets/wncklet/window-list.c
index 2b7e2974..d3b7dbfe 100644
--- a/applets/wncklet/window-list.c
+++ b/applets/wncklet/window-list.c
@@ -384,11 +384,26 @@ gboolean window_list_applet_fill(MatePanelApplet* applet)
 	TasklistData* tasklist;
 	GtkActionGroup* action_group;
 	gchar* ui_path;
+    GtkCssProvider  *provider;
+    GdkScreen *screen;
 
 	tasklist = g_new0(TasklistData, 1);
 
 	tasklist->applet = GTK_WIDGET(applet);
 
+    provider = gtk_css_provider_new ();
+    screen = gdk_screen_get_default ();
+    gtk_css_provider_load_from_data (provider,
+                                         ".mate-panel-menu-bar button,\n"
+                                         " #tasklist-button {\n"
+                                         " padding: 0px;\n"
+                                         " margin: 0px;\n }",
+                                         -1, NULL);
+    gtk_style_context_add_provider_for_screen (screen,
+                                        GTK_STYLE_PROVIDER (provider),
+                                        GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+    g_object_unref (provider);
+
 	mate_panel_applet_set_flags(MATE_PANEL_APPLET(tasklist->applet), MATE_PANEL_APPLET_EXPAND_MAJOR | MATE_PANEL_APPLET_EXPAND_MINOR | MATE_PANEL_APPLET_HAS_HANDLE);
 
 	setup_gsettings(tasklist);