[gnome-control-center/wip/hadess/wacom-mock: 2/3] wacom: Add a fake stylus when mocking a tablet

[Bastien Nocera <hadess src gnome org>]

commit 4a311bf38c5ff542966f8ce92829a1aec7ab201d
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Nov 16 17:19:07 2021 +0100

    wacom: Add a fake stylus when mocking a tablet

 panels/wacom/cc-wacom-panel.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
---
diff --git a/panels/wacom/cc-wacom-panel.c b/panels/wacom/cc-wacom-panel.c
index 643955c3a..0c2b02f38 100644
--- a/panels/wacom/cc-wacom-panel.c
+++ b/panels/wacom/cc-wacom-panel.c
@@ -56,6 +56,7 @@ struct _CcWacomPanel
        GHashTable       *devices; /* key=GsdDevice, value=CcWacomDevice */
        GHashTable       *pages; /* key=CcWacomDevice, value=GtkWidget */
        GHashTable       *stylus_pages; /* key=CcWacomTool, value=GtkWidget */
+       guint             mock_stylus_id;
 
        CcTabletToolMap  *tablet_tool_map;
 
@@ -261,6 +262,7 @@ cc_wacom_panel_dispose (GObject *object)
        g_clear_object (&self->proxy);
        g_clear_pointer (&self->pages, g_hash_table_unref);
        g_clear_pointer (&self->stylus_pages, g_hash_table_unref);
+       g_clear_handle_id (&self->mock_stylus_id, g_source_remove);
 
        G_OBJECT_CLASS (cc_wacom_panel_parent_class)->dispose (object);
 }
@@ -432,6 +434,34 @@ on_shell_event_cb (CcWacomPanel *panel,
        return GDK_EVENT_PROPAGATE;
 }
 
+static gboolean
+show_mock_stylus_cb (gpointer user_data)
+{
+       CcWacomPanel *panel = user_data;
+       GList *device_list;
+       CcWacomDevice *wacom_device;
+       CcWacomTool *stylus;
+
+       panel->mock_stylus_id = 0;
+
+       device_list = g_hash_table_get_values (panel->devices);
+       if (device_list == NULL) {
+               g_warning ("Could not create fake stylus event because could not find tablet device");
+               return G_SOURCE_REMOVE;
+       }
+
+       wacom_device = device_list->data;
+       g_list_free (device_list);
+
+       stylus = cc_wacom_tool_new (0, 0, wacom_device);
+       add_stylus (panel, stylus);
+       update_stylus_notebook (panel, stylus);
+       cc_tablet_tool_map_add_relation (panel->tablet_tool_map,
+                                        wacom_device, stylus);
+
+       return G_SOURCE_REMOVE;
+}
+
 static void
 cc_wacom_panel_constructed (GObject *object)
 {
@@ -468,6 +498,9 @@ cc_wacom_panel_constructed (GObject *object)
        g_signal_connect_object (shell, "event",
                                 G_CALLBACK (on_shell_event_cb), self, G_CONNECT_SWAPPED);
 
+       if (g_getenv ("UMOCKDEV_DIR") != NULL)
+               self->mock_stylus_id = g_idle_add (show_mock_stylus_cb, self);
+
        self->test_button = button;
        update_test_button (self);
 }