зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
3.0 KiB
C++
86 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef FixedTableLayoutStrategy_h__
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#define FixedTableLayoutStrategy_h__
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#include "nscore.h"
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#include "BasicTableLayoutStrategy.h"
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#include "nsCoord.h"
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class nsVoidArray;
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class nsTableFrame;
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struct nsStylePosition;
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/* ---------- FixedTableLayoutStrategy ---------- */
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/** Implementation of HTML4 "table-layout=fixed" table layout.
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* The input to this class is the resolved styles for both the
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* table columns and the cells in row0.
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* The output from this class is to set the column widths in
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* mTableFrame.
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*/
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class FixedTableLayoutStrategy : public BasicTableLayoutStrategy
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{
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public:
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/** Public constructor.
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* @paran aFrame the table frame for which this delegate will do layout
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* @param aNumCols the total number of columns in the table
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*/
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FixedTableLayoutStrategy(nsTableFrame *aFrame, PRInt32 aNumCols);
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/** destructor */
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virtual ~FixedTableLayoutStrategy();
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/** no need to override Initialize since it calls our AssignPreliminaryColumnWidths */
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// virtual PRBool Initialize(nsSize* aMaxElementSize);
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/** Called during resize reflow to determine the new column widths
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* @param aTableStyle - the resolved style for mTableFrame
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* @param aReflowState - the reflow state for mTableFrame
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* @param aMaxWidth - the computed max width for columns to fit into
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*/
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virtual PRBool BalanceColumnWidths(nsIStyleContext * aTableStyle,
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const nsReflowState& aReflowState,
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nscoord aMaxWidth);
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protected:
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/* assign the width of all columns
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* if there is a colframe with a width attribute, use it as the column width.
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* otherwise if there is a cell in the first row and it has a width attribute, use it.
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* if this cell includes a colspan, width is divided equally among spanned columns
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* otherwise the cell get a proportion of the remaining space.
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* as determined by the table width attribute. If no table width attribute, it gets 0 width
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* Computes the minimum and maximum table widths.
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*
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* Set column width information in each column frame and in the table frame.
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*
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* @return PR_TRUE if all is well, PR_FALSE if there was an unrecoverable error
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*
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*/
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virtual PRBool AssignPreliminaryColumnWidths();
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};
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#endif
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