~kennylevinsen/gtkgreet: Add support for user CSS styles.

90424c865f3b8509ec684a987c76599e697fbb83 — Aleksei Bavshin a month ago 24f826f

Add support for user CSS styles.

Add a few element names to simplify styling.

Example with transparent bg and swaybg (for Adwaita-dark theme):
window { background-color: transparent; }
box#body {
    background-color: #353535;
    box-shadow: 1 0 0 1px rgba(27, 27, 27, 0.9);
    padding: 50px;
}

Example with background-image:
window {
  background-image: url("file:///usr/share/backgrounds/default.png");
  background-size: cover;
  background-position: center;
}
box#body {
    background-color: #353535;
    box-shadow: 1 0 0 1px rgba(27, 27, 27, 0.9);
    padding: 50px;
}

patch browse

2 files changed, 24 insertions(+), 0 deletions(-)

M gtkgreet/main.c
M gtkgreet/window.c

M gtkgreet/main.c => gtkgreet/main.c +21 -0

@@ 10,6 10,7 @@ struct GtkGreet *gtkgreet = NULL;
 
 static char* command = NULL;
 static char* background = NULL;
+static char* style = NULL;
 
 #ifdef LAYER_SHELL
 static gboolean use_layer_shell = FALSE;


@@ 23,6 24,7 @@ static GOptionEntry entries[] =
 #endif
   { "command", 'c', 0, G_OPTION_ARG_STRING, &command, "Command to run", "sway"},
   { "background", 'b', 0, G_OPTION_ARG_STRING, &background, "Background image to use", NULL},
+  { "style", 's', 0, G_OPTION_ARG_FILENAME, &style, "CSS style to use", NULL },
   { NULL }
 };
 


@@ 101,6 103,21 @@ static void activate(GtkApplication *app, gpointer user_data) {
     }
 }
 
+static void attach_custom_style(const char* path) {
+    GtkCssProvider *provider = gtk_css_provider_new();
+    GError *err = NULL;
+
+    gtk_css_provider_load_from_path(provider, path, &err);
+    if (err != NULL) {
+        g_warning("style loading failed: %s", err->message);
+        g_error_free(err);
+    } else {
+        gtk_style_context_add_provider_for_screen(gdk_screen_get_default(),
+                GTK_STYLE_PROVIDER(provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+    }
+    g_object_unref(provider);
+}
+
 int main (int argc, char **argv) {
     GError *error = NULL;
     GOptionContext *option_context = g_option_context_new("- GTK-based greeter for greetd");


@@ 125,6 142,10 @@ int main (int argc, char **argv) {
         }
     }
 
+    if (style != NULL) {
+        attach_custom_style(style);
+    }
+
     g_signal_connect(gtkgreet->app, "activate", G_CALLBACK(activate), NULL);
 
     int status = g_application_run(G_APPLICATION(gtkgreet->app), argc, argv);

M gtkgreet/window.c => gtkgreet/window.c +3 -0

@@ 199,9 199,11 @@ static void window_setup(struct Window *ctx) {
 
     if (ctx->window_box == NULL) {
         ctx->window_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+        gtk_widget_set_name(ctx->window_box, "window");
         gtk_container_add(GTK_CONTAINER(ctx->revealer), ctx->window_box);
 
         ctx->clock_label = gtk_label_new("");
+        gtk_widget_set_name(ctx->clock_label, "clock");
         g_object_set(ctx->clock_label, "margin-bottom", 10, NULL);
         gtk_container_add(GTK_CONTAINER(ctx->window_box), ctx->clock_label);
         window_update_clock(ctx);


@@ 212,6 214,7 @@ static void window_setup(struct Window *ctx) {
         if (ctx->body == NULL) {
             ctx->body = gtk_box_new(GTK_ORIENTATION_VERTICAL, 5);
             gtk_widget_set_halign(ctx->body, GTK_ALIGN_CENTER);
+            gtk_widget_set_name(ctx->body, "body");
             gtk_widget_set_size_request(ctx->body, 384, -1);
             gtk_container_add(GTK_CONTAINER(ctx->window_box), ctx->body);
             window_update_clock(ctx);