Add tab scrolling support for dialog windows

1 files changed, 61 insertions, 0 deletions

diff --git a/src/eom-util.c b/src/eom-util.c
index 1dc42fa..69692d5 100644
--- a/src/eom-util.c
+++ b/src/eom-util.c
@@ -427,3 +427,64 @@ eom_util_show_file_in_filemanager (GFile *file, GtkWindow *toplevel)
 	if (!done)
 		_eom_util_show_file_in_filemanager_fallback (file, toplevel);
 }
+
+gboolean
+eom_notebook_page_scroll_event_cb (GtkWidget         *widget,
+                                   GdkEventScroll    *event)
+
+{
+    GtkNotebook *notebook = GTK_NOTEBOOK (widget);
+    GtkWidget *child, *event_widget, *action_widget;
+
+    child = gtk_notebook_get_nth_page (notebook, gtk_notebook_get_current_page (notebook));
+    if (child == NULL)
+        return FALSE;
+
+    event_widget = gtk_get_event_widget ((GdkEvent*) event);
+
+    /* Ignore scroll events from the content of the page */
+    if (event_widget == NULL || event_widget == child || gtk_widget_is_ancestor (event_widget, child))
+        return FALSE;
+
+    /* And also from the action widgets */
+    action_widget = gtk_notebook_get_action_widget (notebook, GTK_PACK_START);
+    if (event_widget == action_widget || (action_widget != NULL && gtk_widget_is_ancestor (event_widget, action_widget)))
+        return FALSE;
+
+    action_widget = gtk_notebook_get_action_widget (notebook, GTK_PACK_END);
+    if (event_widget == action_widget || (action_widget != NULL && gtk_widget_is_ancestor (event_widget, action_widget)))
+        return FALSE;
+
+    switch (event->direction)
+    {
+        case GDK_SCROLL_RIGHT:
+        case GDK_SCROLL_DOWN:
+            gtk_notebook_next_page (notebook);
+            break;
+        case GDK_SCROLL_LEFT:
+        case GDK_SCROLL_UP:
+            gtk_notebook_prev_page (notebook);
+            break;
+        case GDK_SCROLL_SMOOTH:
+            switch (gtk_notebook_get_tab_pos (notebook))
+            {
+                case GTK_POS_LEFT:
+                case GTK_POS_RIGHT:
+                    if (event->delta_y > 0)
+                    gtk_notebook_next_page (notebook);
+                    else if (event->delta_y < 0)
+                    gtk_notebook_prev_page (notebook);
+                    break;
+                case GTK_POS_TOP:
+                case GTK_POS_BOTTOM:
+                    if (event->delta_x > 0)
+                    gtk_notebook_next_page (notebook);
+                    else if (event->delta_x < 0)
+                    gtk_notebook_prev_page (notebook);
+                    break;
+            }
+            break;
+    }
+
+    return TRUE;
+}