[gthumb] fixed multiple selection with shift + mouse click

[Paolo Bacchilega <paobac src gnome org>]

commit 804c04b163882069f300d09800509d5b14d25e0f
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Fri Jul 2 22:41:20 2010 +0200

    fixed multiple selection with shift + mouse click

 gthumb/gth-icon-view.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gthumb/gth-icon-view.c b/gthumb/gth-icon-view.c
index 5cbf1ab..6abbaf0 100644
--- a/gthumb/gth-icon-view.c
+++ b/gthumb/gth-icon-view.c
@@ -585,8 +585,9 @@ icon_view_button_press_event_cb (GtkWidget      *widget,
 
 		pos = gtk_tree_path_get_indices (path)[0];
 
-		if (icon_view->priv->drag_source_enabled &&
-		    ! (event->state & GDK_CONTROL_MASK)
+		if (icon_view->priv->drag_source_enabled
+		    && ! (event->state & GDK_CONTROL_MASK)
+		    && ! (event->state & GDK_SHIFT_MASK)
 		    && gth_file_selection_is_selected (GTH_FILE_SELECTION (icon_view), pos))
 		{
 			icon_view->priv->selection_pending = TRUE;