Use default Gtk theme directory for shell theme + launch apps with the theme configured by the shell

README.md

@@ -7,7 +7,7 @@ Wayland shell for diyac wayland compositor
 ## Theme
 
 Default theme can be set using the envar `DIYA_DEFAULT_THEME`, this will cause the shell searching for CSS file theme in
-`/home/$USER/.config/diya/themes/`:
+`/home/$USER/.themes/<name>/gtk-4.0/gtk.css`:
 
 * diya-shell: will looking for file: `dev.iohub.diya.session-shell.css`
 * diya-login-shell: will looking for file: `dev.iohub.diya.login-shell.css`

src/shell.c

@@ -5,8 +5,8 @@
 #include "files-monior.h"
 #include "input.h"
 
-#define diya_shell_config_css_file(priv) (g_strconcat(g_get_user_config_dir(), "/diya/themes/", priv->theme ? priv->theme : "default", "/", priv->name, ".css", NULL))
+#define diya_shell_config_theme(priv) (g_strconcat(g_get_home_dir(), "/.themes/", priv->theme ? priv->theme : "default", "/gtk-4.0/gtk.css", NULL))
-
+#define diya_shell_config_theme_dir(priv) (g_strconcat(g_get_home_dir(), "/.themes/", priv->theme ? priv->theme : "default", "/gtk-4.0", NULL))
 enum
 {
     NO_PROP,
@@ -76,59 +76,36 @@ static void diya_shell_dispose(GObject *object)
 
 static void diya_shell_reload_theme(DiyaShell *shell)
 {
-    GError *err = NULL;
-    GBytes *bytes = NULL;
-    gchar *css_string = NULL;
     DiyaShellPrivate *priv = diya_shell_get_instance_private(shell);
-    gchar *css_file = diya_shell_config_css_file(priv);
-    g_debug("diya_shell_reload: Looking for css file: %s", css_file);
-    g_file_get_contents(css_file, &css_string, NULL, &err);
-    g_free(css_file);
-    if (err != NULL)
-    {
-        g_warning("diya_shell_reload: Unable to load CSS from file: %s", err->message);
-        g_error_free(err);
-        err = NULL;
-        g_debug("diya_shell_reload: Fallback to default theme");
-        css_file = g_strconcat("/dev/iohub/diya/shell/", priv->name, ".css", NULL);
-        bytes = g_resources_lookup_data(css_file, 0, &err);
-        free(css_file);
-        if (err != NULL)
-        {
-            g_critical("diya_shell_reload: Unable to load CSS from resource: %s", err->message);
-            g_error_free(err);
-            css_string = NULL;
-        }
-        else
-        {
-            css_string = (gchar *)g_bytes_get_data(bytes, NULL);
-        }
-    }
-    if (css_string)
-    {
-        if (priv->css_provider)
-        {
-            gtk_style_context_remove_provider_for_display(gdk_display_get_default(), GTK_STYLE_PROVIDER(priv->css_provider));
-            g_object_unref(priv->css_provider);
-            priv->css_provider = NULL;
-        }
 
-        g_debug("diya_shell_reload: Applying stylesheet:\n %s", css_string);
+    if (priv->css_provider)
-        priv->css_provider = gtk_css_provider_new();
+    {
-        gtk_css_provider_load_from_string(priv->css_provider, css_string);
+        gtk_style_context_remove_provider_for_display(gdk_display_get_default(), GTK_STYLE_PROVIDER(priv->css_provider));
-        gtk_style_context_add_provider_for_display(
+        g_object_unref(priv->css_provider);
+        priv->css_provider = NULL;
+    }
+    priv->css_provider = gtk_css_provider_new();
+
+    gchar *css_file = diya_shell_config_theme(priv);
+    g_debug("diya_shell_reload_theme: Looking for css file: %s", css_file);
+    if (g_file_test(css_file, G_FILE_TEST_EXISTS))
+    {
+        GFile* file = g_file_new_for_path(css_file);
+        gtk_css_provider_load_from_file(priv->css_provider, file);
+        g_object_unref(file);
+    }
+    else
+    {
+        g_warning("diya_shell_reload_theme: Unable to load CSS from file: %s. Fallback to default theme", css_file);
+        gchar* css_resource = g_strconcat("/dev/iohub/diya/shell/", priv->name, ".css", NULL);
+        gtk_css_provider_load_from_resource(priv->css_provider, css_resource);
+        g_free(css_resource);
+    }
+    g_free(css_file);
+    gtk_style_context_add_provider_for_display(
             gdk_display_get_default(),
             GTK_STYLE_PROVIDER(priv->css_provider),
             GTK_STYLE_PROVIDER_PRIORITY_USER);
-        if (!bytes)
-        {
-            free(css_string);
-        }
-    }
-    if (bytes)
-    {
-        g_bytes_unref(bytes);
-    }
 }
 
 void diya_shell_reload(DiyaShell *self)
@@ -183,9 +160,9 @@ static void on_gtk_app_startup(GtkApplication *app, void *data)
         priv->theme = g_strdup(default_theme);
     }
 
-    gchar *css_file = diya_shell_config_css_file(priv);
+    gchar *dir = diya_shell_config_theme_dir(priv);
-    diya_shell_watch_file(shell, css_file, G_CALLBACK(on_diya_shell_theme_file_changed), (gpointer)shell);
+    diya_shell_watch_file(shell, dir, G_CALLBACK(on_diya_shell_theme_file_changed), (gpointer)shell);
-    g_free(css_file);
+    g_free(dir);
     diya_shell_reload(shell);
 
     if (class->startup_handle)
@@ -442,16 +419,16 @@ int diya_shell_run(DiyaShell *shell, int argc, char **argv)
     DiyaShellPrivate *priv = diya_shell_get_instance_private(shell);
     assert(GTK_IS_APPLICATION(priv->app));
     GtkApplication *app = priv->app;
-    /**
+
-     * create shell config dir if not exists
+    /*
-     */
     // theme dir
     gchar *path = g_strconcat(g_get_user_config_dir(), "/diya/themes/", NULL);
     g_mkdir_with_parents((const gchar *)path, 0755);
     g_free(path);
+    */
 
     // keymap dir
-    path = g_strconcat(g_get_user_config_dir(), "/diya/xkb/", NULL);
+    gchar* path = g_strconcat(g_get_user_config_dir(), "/diya/xkb/", NULL);
     g_mkdir_with_parents((const gchar *)path, 0755);
     g_free(path);
 
@@ -529,4 +506,23 @@ void diya_shell_unwatch_file(DiyaShell *self, const gchar *file)
     {
         diya_files_monitor_unwatch(priv->files_watchdog, file);
     }
+}
+
+void diya_shell_launch(DiyaShell* self, GAppInfo* app)
+{
+    GError* error = NULL;
+    DiyaShellPrivate *priv = diya_shell_get_instance_private(self);
+    GAppLaunchContext* context = g_app_launch_context_new();
+    if(priv->theme)
+    {
+        g_app_launch_context_setenv(context, "GTK_THEME", priv->theme);
+    }
+    g_app_info_launch(app, NULL, context, &error);
+    g_object_unref (context);
+    if(error)
+    {
+        g_critical("Unable to launch application: %s", error->message);
+        g_error_free(error);
+        return;
+    }
 }

src/shell.h

@@ -51,6 +51,7 @@ DiyaVirtualKeyboard* diya_shell_get_virtual_keyboard(DiyaShell* shell, const gch
 void diya_shell_monitor_input(DiyaShell* shell);
 gboolean diya_shell_watch_file(DiyaShell* shell, const gchar* file, GCallback callback, gpointer userdata);
 void diya_shell_unwatch_file(DiyaShell* shell, const gchar* file);
+void diya_shell_launch(DiyaShell* shell, GAppInfo* app);
 
 int diya_shell_run(DiyaShell* shell, int argc, char **argv);
 #endif

src/widgets/base-widgets.c

@@ -97,4 +97,10 @@ DiyaShellWindow* diya_shell_window_new(GType window_type, gpointer data)
         class->setup(self);
     }
     return self;
+}
+
+gpointer diya_shell_window_get_shell(DiyaShellWindow* self)
+{
+    DiyaShellWindowPrivate* priv = diya_shell_window_get_instance_private(self);
+    return priv->shell;
 }

src/widgets/base-widgets.h

@@ -12,7 +12,7 @@ struct _DiyaShellWindowClass
     GtkApplicationWindowClass parent_class;
     void (*setup)(DiyaShellWindow* self);
 };
-
+gpointer diya_shell_window_get_shell(DiyaShellWindow* self);
 DiyaShellWindow* diya_shell_window_new(GType window_type, gpointer shell);
 
 #endif

src/widgets/dashboard-widget.c

@@ -113,22 +113,16 @@ static void diya_dashboard_launch(GtkButton* btn, DiyaDashboardWidget* self)
     g_debug("Clicked %d %d", DIYA_IS_DASHBOARD_WIDGET(self), GTK_IS_BUTTON(btn));
 
     GError* error = NULL;
-    GAppInfo* app = g_app_info_create_from_commandline("htop", "Foot", G_APP_INFO_CREATE_NEEDS_TERMINAL, &error);
+    GAppInfo* app = g_app_info_create_from_commandline("gtk4example", "Gtk Example", G_APP_INFO_CREATE_NONE, &error);
     if(error)
     {
         g_critical("Unable to create app info: %s", error->message);
         g_error_free(error);
         return;
     }
-    error = NULL;
+    diya_shell_launch(diya_shell_window_get_shell(DIYA_SHELL_WINDOW(self)), app);
-    g_app_info_launch(app, NULL, NULL, &error);
-    if(error)
-    {
-        g_critical("Unable to launch application: %s", error->message);
-        g_error_free(error);
-        return;
-    }
     g_object_set(self, DIYA_PROP_DASHBOARD_ACTIVE, false, NULL);
+    
 }
 
 static void diya_dashboard_widget_class_init(DiyaDashboardWidgetClass* class)