Implement GtkFloatingContainer

chrome/browser/gtk/status_bubble_gtk.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_GTK_STATUS_BUBBLE_GTK_H_
 #define CHROME_BROWSER_GTK_STATUS_BUBBLE_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <string>
@@ skipping 20 matching lines @@
   virtual void Hide();
   virtual void MouseMoved();
 
   // Called when the download shelf becomes visible or invisible.
   // This is used by to ensure that the status bubble does not obscure
   // the download shelf, when it is visible.
   virtual void UpdateDownloadShelfVisibility(bool visible) { }
 
   void SetStatus(const std::string& status_utf8);
 
-  // Notification from our parent GtkFixed about its size. |allocation| is the
-  // size of our |parent| GtkFixed, and we use it to position our status bubble
-  // directly on top of the current render view.
-  void SetParentAllocation(GtkWidget* parent, GtkAllocation* allocation);
-
   // Top of the widget hierarchy for a StatusBubble. This top level widget is
   // guarenteed to have its gtk_widget_name set to "status-bubble" for
   // identification.
   GtkWidget* widget() { return container_.get(); }
 
  private:
   // Sets the status bubble's location in the parent GtkFixed, shows the widget
   // and makes sure that the status bubble has the highest z-order.
   void Show();
 
   // Sets an internal timer to hide the status bubble after a delay.
   void HideInASecond();
 
   // Builds the widgets, containers, etc.
   void InitWidgets();
 
-  // An ad hoc, informally-specified, bug-ridden, slow implementation of half
-  // of GTK's requisition/allocation system. We use this to position the status
-  // bubble on top of our parent GtkFixed.
-  void SetStatusBubbleSize();
-
   // A GtkAlignment that is the child of |slide_widget_|.
   OwnedWidgetGtk container_;
 
   // The GtkLabel holding the text.
   GtkWidget* label_;
 
-  // Our parent GtkFixed. (We don't own this; we only keep a reference as we
-  // set our own size by notifying |parent_| of our desired size.)
-  GtkWidget* parent_;
-
-  // |parent_|'s GtkAllocation. We make sure that |container_| lives along the
-  // bottom of this and doesn't protrude.
-  GtkAllocation parent_allocation_;
-
   // A timer that hides our window after a delay.
   ScopedRunnableMethodFactory<StatusBubbleGtk> timer_factory_;
 };
 
 #endif  // CHROME_BROWSER_GTK_STATUS_BUBBLE_GTK_H_