[gnome-software/featured-rotate] overview page: Rotate featured apps

[Robert Ancell <rancell src gnome org>]

commit ab9ad78dff553895dc02a963107c42cd3ab95373
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Jan 31 10:20:11 2018 +1300

    overview page: Rotate featured apps

 src/gs-overview-page.c  | 69 ++++++++++++++++++++++++++++++++++++++++---------
 src/gs-overview-page.ui |  3 ++-
 2 files changed, 59 insertions(+), 13 deletions(-)
---
diff --git a/src/gs-overview-page.c b/src/gs-overview-page.c
index c4bea841..83f9a20f 100644
--- a/src/gs-overview-page.c
+++ b/src/gs-overview-page.c
@@ -34,6 +34,7 @@
 #include "gs-common.h"
 
 #define N_TILES 9
+#define FEATURED_ROTATE_TIME 30 /* seconds */
 
 typedef struct
 {
@@ -52,10 +53,11 @@ typedef struct
        gchar                   *category_of_day;
        GHashTable              *category_hash;         /* id : GsCategory */
        GSettings               *settings;
+       guint                    featured_rotate_timer_id;
 
        GtkWidget               *infobar_proprietary;
        GtkWidget               *label_proprietary;
-       GtkWidget               *bin_featured;
+       GtkWidget               *stack_featured;
        GtkWidget               *box_overview;
        GtkWidget               *box_popular;
        GtkWidget               *box_popular_rotating;
@@ -362,6 +364,34 @@ out:
        gs_overview_page_decrement_action_cnt (self);
 }
 
+static gboolean
+gs_overview_page_featured_rotate_cb (gpointer user_data)
+{
+       GsOverviewPage *self = GS_OVERVIEW_PAGE (user_data);
+       GsOverviewPagePrivate *priv = gs_overview_page_get_instance_private (self);
+       GtkWidget *visible_child, *next_child = NULL;
+       g_autoptr(GList) children = NULL;
+       GList *link;
+
+       visible_child = gtk_stack_get_visible_child (GTK_STACK (priv->stack_featured));
+       children = gtk_container_get_children (GTK_CONTAINER (priv->stack_featured));
+       if (children != NULL) {
+               for (link = children; link; link = link->next) {
+                       GtkWidget *child = link->data;
+                       if (child == visible_child) {
+                               if (link->next)
+                                       next_child = link->next->data;
+                               break;
+                       }
+               }
+               if (next_child == NULL)
+                       next_child = g_list_nth_data (children, 0);
+               gtk_stack_set_visible_child (GTK_STACK (priv->stack_featured), next_child);
+       }
+
+       return G_SOURCE_CONTINUE;
+}
+
 static void
 gs_overview_page_get_featured_cb (GObject *source_object,
                                   GAsyncResult *res,
@@ -370,17 +400,21 @@ gs_overview_page_get_featured_cb (GObject *source_object,
        GsOverviewPage *self = GS_OVERVIEW_PAGE (user_data);
        GsOverviewPagePrivate *priv = gs_overview_page_get_instance_private (self);
        GsPluginLoader *plugin_loader = GS_PLUGIN_LOADER (source_object);
-       GtkWidget *tile;
-       GsApp *app;
        g_autoptr(GError) error = NULL;
        g_autoptr(GsAppList) list = NULL;
+       guint i;
 
        list = gs_plugin_loader_job_process_finish (plugin_loader, res, &error);
        if (g_error_matches (error, GS_PLUGIN_ERROR, GS_PLUGIN_ERROR_CANCELLED))
                goto out;
 
+       if (priv->featured_rotate_timer_id != 0) {
+               g_source_remove (priv->featured_rotate_timer_id);
+               priv->featured_rotate_timer_id = 0;
+       }
+
        gtk_widget_hide (priv->featured_heading);
-       gs_container_remove_all (GTK_CONTAINER (priv->bin_featured));
+       gs_container_remove_all (GTK_CONTAINER (priv->stack_featured));
        if (list == NULL) {
                g_warning ("failed to get featured apps: %s",
                           error->message);
@@ -398,16 +432,22 @@ gs_overview_page_get_featured_cb (GObject *source_object,
                gs_app_list_randomize (list);
        }
 
-       /* at the moment, we only care about the first app */
-       app = gs_app_list_index (list, 0);
-       tile = gs_feature_tile_new (app);
-       g_signal_connect (tile, "clicked",
-                         G_CALLBACK (app_tile_clicked), self);
+       for (i = 0; i < gs_app_list_length (list); i++) {
+               GsApp *app = gs_app_list_index (list, i);
+               GtkWidget *tile;
 
-       gtk_container_add (GTK_CONTAINER (priv->bin_featured), tile);
+               tile = gs_feature_tile_new (app);
+               g_signal_connect (tile, "clicked",
+                                 G_CALLBACK (app_tile_clicked), self);
+
+               gtk_container_add (GTK_CONTAINER (priv->stack_featured), tile);
+       }
        gtk_widget_show (priv->featured_heading);
 
        priv->empty = FALSE;
+       priv->featured_rotate_timer_id = g_timeout_add_seconds (FEATURED_ROTATE_TIME,
+                                                               gs_overview_page_featured_rotate_cb,
+                                                               self);
 
 out:
        gs_overview_page_decrement_action_cnt (self);
@@ -909,7 +949,7 @@ gs_overview_page_setup (GsPage *page,
        gtk_container_set_focus_vadjustment (GTK_CONTAINER (priv->box_overview), adj);
 
        tile = gs_feature_tile_new (NULL);
-       gtk_container_add (GTK_CONTAINER (priv->bin_featured), tile);
+       gtk_container_add (GTK_CONTAINER (priv->stack_featured), tile);
 
        for (i = 0; i < N_TILES; i++) {
                tile = gs_popular_tile_new (NULL);
@@ -970,6 +1010,11 @@ gs_overview_page_dispose (GObject *object)
        g_clear_pointer (&priv->category_of_day, g_free);
        g_clear_pointer (&priv->category_hash, g_hash_table_unref);
 
+       if (priv->featured_rotate_timer_id != 0) {
+               g_source_remove (priv->featured_rotate_timer_id);
+               priv->featured_rotate_timer_id = 0;
+       }
+
        G_OBJECT_CLASS (gs_overview_page_parent_class)->dispose (object);
 }
 
@@ -1009,7 +1054,7 @@ gs_overview_page_class_init (GsOverviewPageClass *klass)
 
        gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, infobar_proprietary);
        gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, label_proprietary);
-       gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, bin_featured);
+       gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, stack_featured);
        gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, box_overview);
        gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, box_popular);
        gtk_widget_class_bind_template_child_private (widget_class, GsOverviewPage, box_popular_rotating);
diff --git a/src/gs-overview-page.ui b/src/gs-overview-page.ui
index 14f77bba..ba725bca 100644
--- a/src/gs-overview-page.ui
+++ b/src/gs-overview-page.ui
@@ -131,9 +131,10 @@
                           </packing>
                         </child>
                         <child>
-                          <object class="GtkAlignment" id="bin_featured">
+                          <object class="GtkStack" id="stack_featured">
                             <property name="visible">True</property>
                             <property name="halign">fill</property>
+                            <property name="transition-type">slide-left</property>
                           </object>
                           <packing>
                             <property name="expand">False</property>