зеркало из https://github.com/mozilla/pjs.git
113 строки
4.9 KiB
C++
113 строки
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
// vim:cindent:ts=4:et:sw=4:
|
|
/* ***** 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's table layout code.
|
|
*
|
|
* The Initial Developer of the Original Code is the Mozilla Foundation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2006
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* L. David Baron <dbaron@dbaron.org> (original author)
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either 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 ***** */
|
|
|
|
/*
|
|
* Web-compatible algorithms that determine column and table widths,
|
|
* used for CSS2's 'table-layout: auto'.
|
|
*/
|
|
|
|
#ifndef BasicTableLayoutStrategy_h_
|
|
#define BasicTableLayoutStrategy_h_
|
|
|
|
#include "nsITableLayoutStrategy.h"
|
|
|
|
class nsTableFrame;
|
|
|
|
class BasicTableLayoutStrategy : public nsITableLayoutStrategy
|
|
{
|
|
public:
|
|
BasicTableLayoutStrategy(nsTableFrame *aTableFrame);
|
|
virtual ~BasicTableLayoutStrategy();
|
|
|
|
// nsITableLayoutStrategy implementation
|
|
virtual nscoord GetMinWidth(nsIRenderingContext* aRenderingContext);
|
|
virtual nscoord GetPrefWidth(nsIRenderingContext* aRenderingContext,
|
|
PRBool aComputingSize);
|
|
virtual void MarkIntrinsicWidthsDirty();
|
|
virtual void ComputeColumnWidths(const nsHTMLReflowState& aReflowState);
|
|
|
|
private:
|
|
// NOTE: Using prefix "BTLS" to avoid overlapping names with
|
|
// the values of nsLayoutUtils::IntrinsicWidthType
|
|
enum BtlsWidthType { BTLS_MIN_WIDTH,
|
|
BTLS_PREF_WIDTH,
|
|
BTLS_FINAL_WIDTH };
|
|
|
|
// Compute intrinsic width member variables on the columns.
|
|
void ComputeColumnIntrinsicWidths(nsIRenderingContext* aRenderingContext);
|
|
|
|
// Distribute a colspanning cell's percent width (if any) to its columns.
|
|
void DistributePctWidthToColumns(float aSpanPrefPct,
|
|
PRInt32 aFirstCol,
|
|
PRInt32 aColCount);
|
|
|
|
// Distribute a width of some BltsWidthType type to a set of columns.
|
|
// aWidth: The amount of width to be distributed
|
|
// aFirstCol: The index (in the table) of the first column to be
|
|
// considered for receiving width
|
|
// aColCount: The number of consecutive columns (starting with aFirstCol)
|
|
// to be considered for receiving width
|
|
// aWidthType: The type of width being distributed. (BTLS_MIN_WIDTH and
|
|
// BTLS_PREF_WIDTH are intended to be used for dividing up
|
|
// colspan's min & pref width. BTLS_FINAL_WIDTH is intended
|
|
// to be used for distributing the table's final width across
|
|
// all its columns)
|
|
// aSpanHasSpecifiedWidth: Should be PR_TRUE iff:
|
|
// - We're distributing a colspanning cell's
|
|
// pref or min width to its columns
|
|
// - The colspanning cell has a specified width.
|
|
void DistributeWidthToColumns(nscoord aWidth,
|
|
PRInt32 aFirstCol,
|
|
PRInt32 aColCount,
|
|
BtlsWidthType aWidthType,
|
|
PRBool aSpanHasSpecifiedWidth);
|
|
|
|
|
|
// Compute the min and pref widths of the table from the width
|
|
// variables on the columns.
|
|
void ComputeIntrinsicWidths(nsIRenderingContext* aRenderingContext);
|
|
|
|
nsTableFrame *mTableFrame;
|
|
nscoord mMinWidth;
|
|
nscoord mPrefWidth;
|
|
nscoord mPrefWidthPctExpand;
|
|
nscoord mLastCalcWidth;
|
|
};
|
|
|
|
#endif /* !defined(BasicTableLayoutStrategy_h_) */
|