Make the resize gripper invisible....

views/controls/resize_gripper.h

-// Copyright (c) 2010 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 VIEWS_CONTROLS_RESIZE_GRIPPER_H_
-#define VIEWS_CONTROLS_RESIZE_GRIPPER_H_
-
-#include <string>
-
-#include "views/controls/image_view.h"
-
-namespace views {
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// A simple resize gripper (two vertical bars).
-//
-////////////////////////////////////////////////////////////////////////////////
-class ResizeGripper : public ImageView {
- public:
-  //////////////////////////////////////////////////////////////////////////////
-  //
-  // The interface needed for getting notified about the resize event.
-  //
-  //////////////////////////////////////////////////////////////////////////////
-  class ResizeGripperDelegate {
-   public:
-    // OnResize is sent when resizing is detected. |resize_amount| specifies the
-    // number of pixels that the user wants to resize by, and can be negative or
-    // positive (depending on direction of dragging and flips according to
-    // locale directionality: dragging to the left in LTR locales gives negative
-    // |resize_amount| but positive amount for RTL). |done_resizing| is true if
-    // the user has released the mouse.
-    virtual void OnResize(int resize_amount, bool done_resizing) = 0;
-  };
-
-  static const char kViewClassName[];
-
-  explicit ResizeGripper(ResizeGripperDelegate* delegate);
-  virtual ~ResizeGripper();
-
-  // Overridden from views::View:
-  virtual std::string GetClassName() const;
-  virtual gfx::NativeCursor GetCursorForPoint(Event::EventType event_type,
-                                              const gfx::Point& p);
-  virtual void OnMouseEntered(const views::MouseEvent& event);
-  virtual void OnMouseExited(const views::MouseEvent& event);
-  virtual bool OnMousePressed(const views::MouseEvent& event);
-  virtual bool OnMouseDragged(const views::MouseEvent& event);
-  virtual void OnMouseReleased(const views::MouseEvent& event, bool canceled);
-  virtual bool GetAccessibleRole(AccessibilityTypes::Role* role);
-
- private:
-  // Report the amount the user resized by to the delegate, accounting for
-  // directionality.
-  void ReportResizeAmount(int resize_amount, bool last_update);
-
-  // Changes the visibility of the gripper.
-  void SetGripperVisible(bool visible);
-
-  // The delegate to notify when we have updates.
-  ResizeGripperDelegate* delegate_;
-
-  // The mouse position at start (in screen coordinates).
-  int initial_position_;
-
-  // Are we showing the resize gripper? We only show the resize gripper when
-  // the mouse is over us.
-  bool gripper_visible_;
-
-  DISALLOW_COPY_AND_ASSIGN(ResizeGripper);
-};
-
-}  // namespace views
-
-#endif  // VIEWS_CONTROLS_RESIZE_GRIPPER_H_