зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
3.6 KiB
C++
90 строки
3.6 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: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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.org 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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsITableLayoutStrategy_h__
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#define nsITableLayoutStrategy_h__
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#include "nscore.h"
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#include "nsSize.h"
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class nsIPresContext;
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class nsIStyleContext;
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struct nsHTMLReflowState;
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struct nsMargin;
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class nsTableCellFrame;
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class nsStyleCoord;
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class nsISizeOfHandler;
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class nsITableLayoutStrategy
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{
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public:
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virtual ~nsITableLayoutStrategy() {};
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/** call once every time any table thing changes (content, structure, or style)
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* @param aPresContext - the presentation context
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* @param aReflowState - the reflow state for mTableFrame
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*/
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virtual PRBool Initialize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState)=0;
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/** assign widths for each column, taking into account the table content, the effective style,
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* the layout constraints, and the compatibility mode. Sets mColumnWidths as a side effect.
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* @param aPresContext - the presentation context
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* @param aReflowState - the reflow state for mTableFrame
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*/
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virtual PRBool BalanceColumnWidths(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState)=0;
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/**
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* Calculate the basis for percent width calculations of the table elements
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* @param aReflowState - the reflow state of the table
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* @param aAvailWidth - the available width for the table
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* @param aPixelToTwips - the number of twips in a pixel.
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* @return - the basis for percent calculations
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*/
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virtual nscoord CalcPctAdjTableWidth(const nsHTMLReflowState& aReflowState,
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nscoord aAvailWidth,
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float aPixelToTwips)=0;
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#ifdef DEBUG
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virtual void SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const = 0;
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#endif
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};
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#endif
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