[gnome-builder] project-tree: clamp popover to visible region of widget

[Christian Hergert <chergert src gnome org>]

commit 706e8c1f5638ba229b8014d05650d9113627c285
Author: Christian Hergert <christian hergert me>
Date:   Fri Apr 10 22:56:23 2015 -0700

    project-tree: clamp popover to visible region of widget
    
    If the treeview is scrollable, we could end up with a row that will put
    us past the widget. GtkPopover really doesn't seem to like that. So
    instead, clap the rectangle to the visible width of the widget.

 src/project-tree/gb-project-tree-actions.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/project-tree/gb-project-tree-actions.c b/src/project-tree/gb-project-tree-actions.c
index cefa3f8..d10f0b0 100644
--- a/src/project-tree/gb-project-tree-actions.c
+++ b/src/project-tree/gb-project-tree-actions.c
@@ -331,8 +331,9 @@ gb_project_tree_actions_new (GbProjectTree *self,
   GbTreeNode *selected;
   GObject *item;
   GtkPopover *popover;
-  GdkRectangle rect;
   IdeProjectFile *project_file;
+  GdkRectangle rect;
+  GtkAllocation alloc;
   GFile *file;
 
   g_assert (GB_IS_PROJECT_TREE (self));
@@ -359,8 +360,12 @@ gb_project_tree_actions_new (GbProjectTree *self,
   if ((self->expanded_in_new = !gb_tree_node_get_expanded (selected)))
     gb_tree_node_expand (selected, FALSE);
 
+  gtk_widget_get_allocation (GTK_WIDGET (self), &alloc);
   gb_tree_node_get_area (selected, &rect);
 
+  if ((rect.x + rect.width) > (alloc.x + alloc.width))
+    rect.width = (alloc.x + alloc.width) - rect.x;
+
   popover = g_object_new (GB_TYPE_NEW_FILE_POPOVER, NULL);
   gtk_popover_set_relative_to (popover, GTK_WIDGET (self));
   gtk_popover_set_pointing_to (popover, &rect);