зеркало из https://github.com/mozilla/gecko-dev.git
108 строки
3.9 KiB
C++
108 строки
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape 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/NPL/
|
|
*
|
|
* 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.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
|
|
#ifndef FixedTableLayoutStrategy_h__
|
|
#define FixedTableLayoutStrategy_h__
|
|
|
|
#include "nscore.h"
|
|
#include "BasicTableLayoutStrategy.h"
|
|
#include "nsCoord.h"
|
|
|
|
class nsVoidArray;
|
|
class nsTableFrame;
|
|
struct nsStylePosition;
|
|
|
|
|
|
/* ---------- FixedTableLayoutStrategy ---------- */
|
|
|
|
/** Implementation of HTML4 "table-layout=fixed" table layout.
|
|
* The input to this class is the resolved styles for both the
|
|
* table columns and the cells in row0.
|
|
* The output from this class is to set the column widths in
|
|
* mTableFrame.
|
|
*/
|
|
class FixedTableLayoutStrategy : public BasicTableLayoutStrategy
|
|
{
|
|
public:
|
|
|
|
/** Public constructor.
|
|
* @paran aFrame the table frame for which this delegate will do layout
|
|
* @param aNumCols the total number of columns in the table
|
|
*/
|
|
FixedTableLayoutStrategy(nsTableFrame *aFrame);
|
|
|
|
/** destructor */
|
|
virtual ~FixedTableLayoutStrategy();
|
|
|
|
/** Called during resize reflow to determine the new column widths
|
|
* @param aTableStyle - the resolved style for mTableFrame
|
|
* @param aReflowState - the reflow state for mTableFrame
|
|
* @param aMaxWidth - the computed max width for columns to fit into
|
|
*/
|
|
virtual PRBool BalanceColumnWidths(nsIPresContext* aPresContext,
|
|
nsIStyleContext* aTableStyle,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nscoord aMaxWidth);
|
|
|
|
// see nsTableFrame::ColumnsCanBeInvalidatedBy
|
|
PRBool ColumnsCanBeInvalidatedBy(nsStyleCoord* aPrevStyleWidth,
|
|
const nsTableCellFrame& aCellFrame) const;
|
|
|
|
// see nsTableFrame::ColumnsCanBeInvalidatedBy
|
|
PRBool ColumnsCanBeInvalidatedBy(const nsTableCellFrame& aCellFrame,
|
|
PRBool aConsiderMinWidth = PR_FALSE) const;
|
|
|
|
// see nsTableFrame::ColumnsCanBeInvalidatedBy
|
|
PRBool ColumnsAreValidFor(const nsTableCellFrame& aCellFrame,
|
|
nscoord aPrevCellMin,
|
|
nscoord aPrevCellDes) const;
|
|
|
|
#ifdef DEBUG
|
|
void SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const {
|
|
*aResult = sizeof(*this);
|
|
}
|
|
#endif
|
|
|
|
protected:
|
|
/* assign the width of all columns
|
|
* if there is a colframe with a width attribute, use it as the column width.
|
|
* otherwise if there is a cell in the first row and it has a width attribute, use it.
|
|
* if this cell includes a colspan, width is divided equally among spanned columns
|
|
* otherwise the cell get a proportion of the remaining space.
|
|
* as determined by the table width attribute. If no table width attribute, it gets 0 width
|
|
* Computes the minimum and maximum table widths.
|
|
*
|
|
* Set column width information in each column frame and in the table frame.
|
|
*
|
|
* @return PR_TRUE if all is well, PR_FALSE if there was an unrecoverable error
|
|
*
|
|
*/
|
|
virtual PRBool AssignPreliminaryColumnWidths(nsIPresContext* aPresContext,
|
|
nscoord aComputedWidth);
|
|
|
|
|
|
};
|
|
|
|
|
|
#endif
|
|
|