After this GTK+ change font to spin button and this how to apply CSS to GTK+ code? question, I started understanding how to apply a css style to a GTK code, yet there are still a lot confusing details.
This is the code with which I create two buttons and three labels:
test.c
#include <gtk/gtk.h>
#include <string.h>
static void
activate (GtkApplication *app,
gpointer user_data)
{
GtkWidget *window = gtk_application_window_new (app);;
GtkWidget *button_01 = gtk_button_new_with_label("This is button 01");
GtkWidget *button_02 = gtk_button_new_with_label("This is button 02");
GtkWidget *label0 = gtk_label_new("hello 0");
GtkWidget *label1 = gtk_label_new("hello 1");
GtkWidget *label2 = gtk_label_new("hello 2");
GtkWidget * main_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 25);
GtkCssProvider *cssProvider = gtk_css_provider_new();
gtk_css_provider_load_from_path(cssProvider, "theme.css", NULL);
gtk_style_context_add_provider_for_screen(gdk_screen_get_default(),
GTK_STYLE_PROVIDER(cssProvider),
GTK_STYLE_PROVIDER_PRIORITY_USER);
gtk_box_set_homogeneous (GTK_BOX (main_box), TRUE);
gtk_container_add (GTK_CONTAINER (window), main_box);
gtk_container_add (GTK_CONTAINER (main_box), button_01);
gtk_container_add (GTK_CONTAINER (main_box), label0);
gtk_container_add (GTK_CONTAINER (main_box), label1);
gtk_container_add (GTK_CONTAINER (main_box), label2);
gtk_container_add (GTK_CONTAINER (main_box), button_02);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
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;
}
and this is the css file:
theme.css
GtkWindow {
font: Comic Sans 12
}
.button {
color: green;
}
The code works fine, because all fonts are changed and all buttons are red. What I want to do is to style each widget individually, for example to make the label0 appear red, the label1 appear green and the label 2 appear blue.
According to these examples https://developer.gnome.org/gtk3/stable/chap-css-overview.html , something something this should do the trick:
label#label0 {
color: red;
}
label#label1 {
color: green;
}
label#label2 {
color: blue;
}
but apparently it doesn't which means that I miss something there.
Any help about how to style widgets individually with css code would be appreciated.
