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95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/**
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Author:
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Eric D Vaughan
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**/
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#ifndef nsBoxLayoutState_h___
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#define nsBoxLayoutState_h___
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#include "nsIFrame.h"
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#include "nsCOMPtr.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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class nsIRenderingContext;
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class nsCalculatedBoxInfo;
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struct nsHTMLReflowMetrics;
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class nsString;
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class nsHTMLReflowCommand;
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class nsBoxLayoutState
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{
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public:
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nsBoxLayoutState(nsPresContext* aPresContext, nsIRenderingContext* aRenderingContext = nsnull) NS_HIDDEN;
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nsBoxLayoutState(const nsBoxLayoutState& aState) NS_HIDDEN;
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nsPresContext* PresContext() const { return mPresContext; }
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nsIPresShell* PresShell() const { return mPresContext->PresShell(); }
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PRUint32 LayoutFlags() const { return mLayoutFlags; }
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void SetLayoutFlags(PRUint32 aFlags) { mLayoutFlags = aFlags; }
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// if true no one under us will paint during reflow.
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void SetPaintingDisabled(PRBool aDisable) { mPaintingDisabled = aDisable; }
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PRBool PaintingDisabled() const { return mPaintingDisabled; }
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// The rendering context may be null for specialized uses of
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// nsBoxLayoutState and should be null-checked before it is used.
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// However, passing a null rendering context to the constructor when
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// doing box layout or intrinsic size calculation will cause bugs.
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nsIRenderingContext* GetRenderingContext() const { return mRenderingContext; }
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void PushStackMemory() { PresShell()->PushStackMemory(); }
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void PopStackMemory() { PresShell()->PopStackMemory(); }
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void* AllocateStackMemory(size_t aSize)
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{ return PresShell()->AllocateStackMemory(aSize); }
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private:
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nsCOMPtr<nsPresContext> mPresContext;
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nsIRenderingContext *mRenderingContext;
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PRUint32 mLayoutFlags;
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PRBool mPaintingDisabled;
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};
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#endif
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