From 88198c2707d57b346bf6fcbb028dfd9aac4e0fae Mon Sep 17 00:00:00 2001
From: Claudio Saavedra <csaavedra@igalia.com>
Date: Mon, 11 Jun 2012 13:10:26 +0300
Subject: ephy-embed: show a message popup when entering fullscreen mode

The message is different depending on whether we are entering HTML5 fullscreen
mode or application fullscreen, since the keys used to leave either mode are
different.

https://bugzilla.gnome.org/show_bug.cgi?id=671195
---
 embed/ephy-embed.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)

(limited to 'embed/ephy-embed.c')

diff --git a/embed/ephy-embed.c b/embed/ephy-embed.c
index 3a8d531c0..46366b4bf 100644
--- a/embed/ephy-embed.c
+++ b/embed/ephy-embed.c
@@ -68,6 +68,8 @@ struct _EphyEmbedPrivate
   GSList *destroy_on_transition_list;
   GtkWidget *floating_bar;
   GtkWidget *progress;
+  GtkWidget *fullscreen_message_label;
+  char *fullscreen_string;
 
   GSList *messages;
   GSList *keys;
@@ -78,6 +80,8 @@ struct _EphyEmbedPrivate
   guint tab_message_id;
   guint pop_statusbar_later_source_id;
 
+  guint fullscreen_message_id;
+
   guint clear_progress_source_id;
 
   gulong status_handler_id;
@@ -280,6 +284,38 @@ ephy_embed_grab_focus (GtkWidget *widget)
     gtk_widget_grab_focus (child);
 }
 
+
+static gboolean
+fullscreen_message_label_hide (EphyEmbed *embed)
+{
+  if (embed->priv->fullscreen_message_id) {
+    gtk_widget_hide (embed->priv->fullscreen_message_label);
+    g_source_remove (embed->priv->fullscreen_message_id);
+    embed->priv->fullscreen_message_id = 0;
+  }
+
+  return FALSE;
+}
+
+void
+ephy_embed_entering_fullscreen (EphyEmbed *embed)
+{
+  gtk_widget_show (embed->priv->fullscreen_message_label);
+
+  if (embed->priv->fullscreen_message_id)
+    g_source_remove (embed->priv->fullscreen_message_id);
+
+  embed->priv->fullscreen_message_id = g_timeout_add_seconds (5,
+                                                              (GSourceFunc)fullscreen_message_label_hide,
+                                                              embed);
+}
+
+void
+ephy_embed_leaving_fullscreen (EphyEmbed *embed)
+{
+  fullscreen_message_label_hide (embed);
+}
+
 static void
 ephy_embed_dispose (GObject *object)
 {
@@ -325,6 +361,11 @@ ephy_embed_dispose (GObject *object)
     priv->progress_update_handler_id = 0;
   }
 
+  if (priv->fullscreen_message_id) {
+    g_source_remove (priv->fullscreen_message_id);
+    priv->fullscreen_message_id = 0;
+  }
+
   G_OBJECT_CLASS (ephy_embed_parent_class)->dispose (object);
 }
 
@@ -359,6 +400,8 @@ ephy_embed_finalize (GObject *object)
   g_slist_free (priv->keys);
   priv->keys = NULL;
 
+  g_free (embed->priv->fullscreen_string);
+
   G_OBJECT_CLASS (ephy_embed_parent_class)->finalize (object);
 }
 
@@ -497,6 +540,40 @@ download_requested_cb (WebKitWebView *web_view,
   return TRUE;
 }
 
+static void
+ephy_embed_set_fullscreen_message (EphyEmbed *embed,
+                                   gboolean is_html5_fullscreen)
+{
+  char *message;
+
+  if (G_UNLIKELY (embed->priv->fullscreen_string == NULL))
+    embed->priv->fullscreen_string = g_strdup (_("Press %s to exit fullscreen"));
+
+  /* Translators: 'ESC' and 'F11' are keyboard keys. */
+  message = g_strdup_printf (embed->priv->fullscreen_string, is_html5_fullscreen ? _("ESC") : _("F11"));
+  gtk_label_set_text (GTK_LABEL (embed->priv->fullscreen_message_label),
+                      message);
+  g_free (message);
+}
+
+static gboolean
+entering_fullscreen_cb (WebKitWebView *web_view,
+                        GObject *element,
+                        EphyEmbed *embed)
+{
+  ephy_embed_set_fullscreen_message (embed, TRUE);
+  return FALSE;
+}
+
+static gboolean
+leaving_fullscreen_cb (WebKitWebView *web_view,
+                       GObject *element,
+                       EphyEmbed *embed)
+{
+  ephy_embed_set_fullscreen_message (embed, FALSE);
+  return FALSE;
+}
+
 static gboolean
 pop_statusbar_later_cb (gpointer data)
 {
@@ -621,11 +698,21 @@ ephy_embed_constructed (GObject *object)
   overlay = gtk_overlay_new ();
   gtk_style_context_add_class (gtk_widget_get_style_context (overlay),
                                GTK_STYLE_CLASS_OSD);
+
   gtk_widget_add_events (overlay, 
                          GDK_ENTER_NOTIFY_MASK |
                          GDK_LEAVE_NOTIFY_MASK);
   gtk_container_add (GTK_CONTAINER (overlay), scrolled_window);
 
+  /* Floating message popup for fullscreen mode. */
+  priv->fullscreen_message_label = gtk_label_new (NULL);
+  gtk_widget_set_name (priv->fullscreen_message_label, "fullscreen-popup");
+  gtk_widget_set_halign (priv->fullscreen_message_label, GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (priv->fullscreen_message_label, GTK_ALIGN_CENTER);
+  gtk_widget_set_no_show_all (priv->fullscreen_message_label, TRUE);
+  gtk_overlay_add_overlay (GTK_OVERLAY (overlay), priv->fullscreen_message_label);
+  ephy_embed_set_fullscreen_message (embed, FALSE);
+
   /* statusbar is hidden by default */
   priv->floating_bar = nautilus_floating_bar_new (NULL, FALSE);
   gtk_widget_set_halign (priv->floating_bar, GTK_ALIGN_START);
@@ -663,6 +750,8 @@ ephy_embed_constructed (GObject *object)
                     "signal::notify::load-status", G_CALLBACK (load_status_changed_cb), embed,
                     "signal::resource-request-starting", G_CALLBACK (resource_request_starting_cb), embed,
                     "signal::download-requested", G_CALLBACK (download_requested_cb), embed,
+                    "signal::entering-fullscreen", G_CALLBACK (entering_fullscreen_cb), embed,
+                    "signal::leaving-fullscreen", G_CALLBACK (leaving_fullscreen_cb), embed,
                     NULL);
 
   priv->status_handler_id = g_signal_connect (web_view, "notify::status-message",
-- 
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