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

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/* -*- 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):
* David Hyatt (hyatt@netscape.com)
*
* Alternatively, the contents of this file may be used under the terms of
* 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"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
Eric D Vaughan
A frame that can have multiple children. Only one child may be displayed at one time. So the
can be flipped though like a deck of cards.
**/
#ifndef nsStackLayout_h___
#define nsStackLayout_h___
#include "nsBoxLayout.h"
#include "nsCOMPtr.h"
nsresult NS_NewStackLayout(nsIPresShell* aPresShell, nsCOMPtr<nsIBoxLayout>& aNewLayout);
class nsStackLayout : public nsBoxLayout
{
public:
friend nsresult NS_NewStackLayout(nsIPresShell* aPresShell, nsCOMPtr<nsIBoxLayout>& aNewLayout);
static void Shutdown();
nsStackLayout();
NS_IMETHOD Layout(nsIBox* aBox, nsBoxLayoutState& aState);
NS_IMETHOD GetPrefSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
NS_IMETHOD GetMinSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
NS_IMETHOD GetMaxSize(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
NS_IMETHOD GetAscent(nsIBox* aBox, nsBoxLayoutState& aBoxLayoutState, nscoord& aAscent);
static PRBool AddOffset(nsBoxLayoutState& aState, nsIBox* aChild, nsSize& aSize);
private:
static nsIBoxLayout* gInstance;
}; // class nsStackLayout
#endif