gecko/layout/xul/base/src/nsResizerFrame.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Original Author: Eric J. Burley (ericb@neoplanet.com)
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef nsResizerFrame_h___
#define nsResizerFrame_h___

#include "nsTitleBarFrame.h"

class nsIBaseWindow;
class nsMenuPopupFrame;

class nsResizerFrame : public nsTitleBarFrame 
{
protected:
  struct Direction {
    PRInt8 mHorizontal;
    PRInt8 mVertical;
  };

public:
  NS_DECL_FRAMEARENA_HELPERS

  friend nsIFrame* NS_NewResizerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);  

  nsResizerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

  NS_IMETHOD HandleEvent(nsPresContext* aPresContext, 
                                      nsGUIEvent* aEvent,
                                      nsEventStatus* aEventStatus);

  virtual void MouseClicked(nsPresContext* aPresContext, nsGUIEvent *aEvent);

protected:
  nsIContent* GetContentToResize(nsIPresShell* aPresShell, nsIBaseWindow** aWindow);

  Direction GetDirection();
  static void AdjustDimensions(PRInt32* aPos, PRInt32* aSize,
                        PRInt32 aMovement, PRInt8 aResizerDirection);

  struct SizeInfo {
    nsString width, height;
  };
  static void SizeInfoDtorFunc(void *aObject, nsIAtom *aPropertyName,
                               void *aPropertyValue, void *aData);
  static void ResizeContent(nsIContent* aContent, const Direction& aDirection,
                            const SizeInfo& aSizeInfo, SizeInfo* aOriginalSizeInfo);
  static void MaybePersistOriginalSize(nsIContent* aContent, const SizeInfo& aSizeInfo);
  static void RestoreOriginalSize(nsIContent* aContent);
protected:
	nsIntRect mMouseDownRect;
	nsIntPoint mMouseDownPoint;
}; // class nsResizerFrame

#endif /* nsResizerFrame_h___ */