position the balloons after closing in a way that will keep the next one's cl...

chrome/browser/notifications/balloon.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.
 
 // Handles the visible notification (or balloons).
 
 #ifndef CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
 #define CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_
 
 #include <vector>
@@ skipping 39 matching lines @@
 class Balloon {
  public:
   Balloon(const Notification& notification,
           Profile* profile,
           BalloonCollection* collection);
   virtual ~Balloon();
 
   const Notification& notification() const { return *notification_.get(); }
   Profile* profile() const { return profile_; }
 
-  const gfx::Point& position() const { return position_; }
+  gfx::Point GetPosition() const {
+    return position_.Add(offset_);
+  }
   void SetPosition(const gfx::Point& upper_left, bool reposition);
 
+  const gfx::Point& offset() { return offset_;}
+  void set_offset(const gfx::Point& offset) { offset_ = offset; }
+  void add_offset(const gfx::Point& offset) { offset_ = offset_.Add(offset); }
+
   const gfx::Size& content_size() const { return content_size_; }
   void set_content_size(const gfx::Size& size) { content_size_ = size; }
 
   const gfx::Size& min_scrollbar_size() const { return min_scrollbar_size_; }
   void set_min_scrollbar_size(const gfx::Size& size) {
     min_scrollbar_size_ = size;
   }
 
   // Request a new content size for this balloon.  This will get passed
   // to the balloon collection for checking against available space and
@@ skipping 35 matching lines @@
   // The collection that this balloon belongs to.  Non-owned pointer.
   BalloonCollection* collection_;
 
   // The actual UI element for the balloon.
   scoped_ptr<BalloonView> balloon_view_;
 
   // Position and size of the balloon on the screen.
   gfx::Point position_;
   gfx::Size content_size_;
 
+  // Temporary offset for balloons that need to be positioned in a non-standard
+  // position for keeping the close buttons under the mouse cursor.
+  gfx::Point offset_;
+
   // Smallest size for this balloon where scrollbars will be shown.
   gfx::Size min_scrollbar_size_;
 
   DISALLOW_COPY_AND_ASSIGN(Balloon);
 };
 
 #endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_H_