In my application, I would like to change the progressbar color to red, but this only works if I set the style priority to GTK_STYLE_PROVIDER_PRIORITY_SETTINGS, and themes cannot override it. If I leave GTK_STYLE_PROVIDER_PRIORITY_THEME then I don’t get any effect from the style. For tests I use Adwaita and other themes. In non-test code, I have a class for my application so that themes can distinguish it from others.
What can I do?
#include <gtk/gtk.h>
static void
activate (GtkApplication* app,
gpointer user_data)
{
GtkWidget *window;
GtkListStore *store;
GtkTreeIter iter;
GtkWidget *tree_view;
GtkCssProvider *provider;
GtkStyleContext *context;
//====================================================================
provider = gtk_css_provider_new ();
gtk_css_provider_load_from_data (
provider,
"treeview.view .progressbar { background: image(red); }",
-1, NULL);
gtk_style_context_add_provider_for_screen (
gdk_screen_get_default (),
GTK_STYLE_PROVIDER (provider),
GTK_STYLE_PROVIDER_PRIORITY_THEME);
//====================================================================
window = gtk_application_window_new (app);
gtk_window_set_title (GTK_WINDOW (window), "Window");
gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
store = gtk_list_store_new (1, G_TYPE_INT);
gtk_list_store_append (store, &iter);
gtk_list_store_set (store, &iter, 0, 50, -1);
tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store));
gtk_tree_view_append_column (
GTK_TREE_VIEW (tree_view),
gtk_tree_view_column_new_with_attributes (
"progress",
gtk_cell_renderer_progress_new (),
"value", 0,
NULL));
gtk_container_add (GTK_CONTAINER (window), tree_view);
gtk_widget_show_all (window);
}
int
main (int argc,
char **argv)
{
GtkApplication *app;
int status;
app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
status = g_application_run (G_APPLICATION (app), argc, argv);
g_object_unref (app);
return status;
}
