forked from mirrors/gecko-dev
d2b6891283
This changes a number of callers that were previously bypassing the use of the correct language (with either no language or the charset-detected language on the pres context via nsPresContext::GetMetricsFor) and/or the correct user font set to pass the correct values, which should improve the correctness of the behavior of whatever they were using the fonts for, and also reduce the number of unique sets of font metrics requested (which helps nsFontCache effectiveness).
892 lines
30 KiB
C++
892 lines
30 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 MathML Project.
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*
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* The Initial Developer of the Original Code is
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* The University Of Queensland.
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* Portions created by the Initial Developer are Copyright (C) 1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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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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#include "nsCOMPtr.h"
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#include "nsFrame.h"
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#include "nsBlockFrame.h"
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#include "nsPresContext.h"
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#include "nsStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsINameSpaceManager.h"
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#include "nsRenderingContext.h"
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#include "nsTArray.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsTableOuterFrame.h"
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#include "nsTableFrame.h"
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#include "nsTableCellFrame.h"
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#include "celldata.h"
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#include "nsMathMLmtableFrame.h"
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using namespace mozilla;
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//
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// <mtable> -- table or matrix - implementation
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//
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// helper function to perform an in-place split of a space-delimited string,
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// and return an array of pointers for the beginning of each segment, i.e.,
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// aOffset[0] is the first string, aOffset[1] is the second string, etc.
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// Used to parse attributes like columnalign='left right', rowalign='top bottom'
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static void
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SplitString(nsString& aString, // [IN/OUT]
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nsTArray<PRUnichar*>& aOffset) // [OUT]
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{
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static const PRUnichar kNullCh = PRUnichar('\0');
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aString.Append(kNullCh); // put an extra null at the end
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PRUnichar* start = aString.BeginWriting();
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PRUnichar* end = start;
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while (kNullCh != *start) {
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while ((kNullCh != *start) && nsCRT::IsAsciiSpace(*start)) { // skip leading space
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start++;
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}
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end = start;
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while ((kNullCh != *end) && (PR_FALSE == nsCRT::IsAsciiSpace(*end))) { // look for space or end
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end++;
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}
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*end = kNullCh; // end string here
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if (start < end) {
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aOffset.AppendElement(start); // record the beginning of this segment
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}
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start = ++end;
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}
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}
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struct nsValueList
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{
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nsString mData;
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nsTArray<PRUnichar*> mArray;
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nsValueList(nsString& aData) {
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mData.Assign(aData);
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SplitString(mData, mArray);
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}
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};
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// Each rowalign='top bottom' or columnalign='left right center' (from
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// <mtable> or <mtr>) is split once (lazily) into a nsValueList which is
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// stored in the property table. Row/Cell frames query the property table
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// to see what values apply to them.
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// XXX See bug 69409 - MathML attributes are not mapped to style.
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static void
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DestroyValueList(void* aPropertyValue)
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{
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delete static_cast<nsValueList*>(aPropertyValue);
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}
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NS_DECLARE_FRAME_PROPERTY(RowAlignProperty, DestroyValueList)
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NS_DECLARE_FRAME_PROPERTY(RowLinesProperty, DestroyValueList)
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NS_DECLARE_FRAME_PROPERTY(ColumnAlignProperty, DestroyValueList)
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NS_DECLARE_FRAME_PROPERTY(ColumnLinesProperty, DestroyValueList)
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static const FramePropertyDescriptor*
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AttributeToProperty(nsIAtom* aAttribute)
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{
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if (aAttribute == nsGkAtoms::rowalign_)
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return RowAlignProperty();
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if (aAttribute == nsGkAtoms::rowlines_)
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return RowLinesProperty();
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if (aAttribute == nsGkAtoms::columnalign_)
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return ColumnAlignProperty();
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NS_ASSERTION(aAttribute == nsGkAtoms::columnlines_, "Invalid attribute");
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return ColumnLinesProperty();
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}
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static PRUnichar*
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GetValueAt(nsIFrame* aTableOrRowFrame,
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const FramePropertyDescriptor* aProperty,
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nsIAtom* aAttribute,
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PRInt32 aRowOrColIndex)
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{
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FrameProperties props = aTableOrRowFrame->Properties();
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nsValueList* valueList = static_cast<nsValueList*>(props.Get(aProperty));
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if (!valueList) {
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// The property isn't there yet, so set it
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nsAutoString values;
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aTableOrRowFrame->GetContent()->GetAttr(kNameSpaceID_None, aAttribute, values);
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if (!values.IsEmpty())
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valueList = new nsValueList(values);
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if (!valueList || !valueList->mArray.Length()) {
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delete valueList; // ok either way, delete is null safe
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return nsnull;
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}
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props.Set(aProperty, valueList);
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}
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PRInt32 count = valueList->mArray.Length();
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return (aRowOrColIndex < count)
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? valueList->mArray[aRowOrColIndex]
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: valueList->mArray[count-1];
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}
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#ifdef NS_DEBUG
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static PRBool
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IsTable(PRUint8 aDisplay)
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{
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if ((aDisplay == NS_STYLE_DISPLAY_TABLE) ||
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(aDisplay == NS_STYLE_DISPLAY_INLINE_TABLE))
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return PR_TRUE;
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return PR_FALSE;
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}
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#define DEBUG_VERIFY_THAT_FRAME_IS(_frame, _expected) \
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NS_ASSERTION(NS_STYLE_DISPLAY_##_expected == _frame->GetStyleDisplay()->mDisplay, "internal error");
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#define DEBUG_VERIFY_THAT_FRAME_IS_TABLE(_frame) \
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NS_ASSERTION(IsTable(_frame->GetStyleDisplay()->mDisplay), "internal error");
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#else
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#define DEBUG_VERIFY_THAT_FRAME_IS(_frame, _expected)
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#define DEBUG_VERIFY_THAT_FRAME_IS_TABLE(_frame)
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#endif
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// map attributes that depend on the index of the row:
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// rowalign, rowlines, XXX need rowspacing too
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static void
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MapRowAttributesIntoCSS(nsIFrame* aTableFrame,
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nsIFrame* aRowFrame)
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{
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DEBUG_VERIFY_THAT_FRAME_IS_TABLE(aTableFrame);
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DEBUG_VERIFY_THAT_FRAME_IS(aRowFrame, TABLE_ROW);
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PRInt32 rowIndex = ((nsTableRowFrame*)aRowFrame)->GetRowIndex();
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nsIContent* rowContent = aRowFrame->GetContent();
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PRUnichar* attr;
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// see if the rowalign attribute is not already set
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if (!rowContent->HasAttr(kNameSpaceID_None, nsGkAtoms::rowalign_) &&
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!rowContent->HasAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_rowalign_)) {
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// see if the rowalign attribute was specified on the table
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attr = GetValueAt(aTableFrame, RowAlignProperty(),
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nsGkAtoms::rowalign_, rowIndex);
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if (attr) {
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// set our special _moz attribute on the row without notifying a reflow
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rowContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_rowalign_,
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nsDependentString(attr), PR_FALSE);
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}
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}
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// if we are not on the first row, see if |rowlines| was specified on the table.
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// Note that we pass 'rowIndex-1' because the CSS rule in mathml.css is associated
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// to 'border-top', and it is as if we draw the line on behalf of the previous cell.
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// This way of doing so allows us to handle selective lines, [row]\hline[row][row]',
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// and cases of spanning cells without further complications.
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if (rowIndex > 0 &&
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!rowContent->HasAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_rowline_)) {
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attr = GetValueAt(aTableFrame, RowLinesProperty(),
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nsGkAtoms::rowlines_, rowIndex-1);
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if (attr) {
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// set our special _moz attribute on the row without notifying a reflow
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rowContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_rowline_,
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nsDependentString(attr), PR_FALSE);
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}
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}
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}
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// map attributes that depend on the index of the column:
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// columnalign, columnlines, XXX need columnwidth and columnspacing too
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static void
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MapColAttributesIntoCSS(nsIFrame* aTableFrame,
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nsIFrame* aRowFrame,
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nsIFrame* aCellFrame)
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{
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DEBUG_VERIFY_THAT_FRAME_IS_TABLE(aTableFrame);
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DEBUG_VERIFY_THAT_FRAME_IS(aRowFrame, TABLE_ROW);
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DEBUG_VERIFY_THAT_FRAME_IS(aCellFrame, TABLE_CELL);
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PRInt32 rowIndex, colIndex;
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((nsTableCellFrame*)aCellFrame)->GetCellIndexes(rowIndex, colIndex);
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nsIContent* cellContent = aCellFrame->GetContent();
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PRUnichar* attr;
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// see if the columnalign attribute is not already set
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if (!cellContent->HasAttr(kNameSpaceID_None, nsGkAtoms::columnalign_) &&
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!cellContent->HasAttr(kNameSpaceID_None,
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nsGkAtoms::_moz_math_columnalign_)) {
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// see if the columnalign attribute was specified on the row
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attr = GetValueAt(aRowFrame, ColumnAlignProperty(),
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nsGkAtoms::columnalign_, colIndex);
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if (!attr) {
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// see if the columnalign attribute was specified on the table
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attr = GetValueAt(aTableFrame, ColumnAlignProperty(),
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nsGkAtoms::columnalign_, colIndex);
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}
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if (attr) {
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// set our special _moz attribute without notifying a reflow
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cellContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_columnalign_,
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nsDependentString(attr), PR_FALSE);
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}
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}
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// if we are not on the first column, see if |columnlines| was specified on
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// the table. Note that we pass 'colIndex-1' because the CSS rule in mathml.css
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// is associated to 'border-left', and it is as if we draw the line on behalf
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// of the previous cell. This way of doing so allows us to handle selective lines,
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// e.g., 'r|cl', and cases of spanning cells without further complications.
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if (colIndex > 0 &&
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!cellContent->HasAttr(kNameSpaceID_None,
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nsGkAtoms::_moz_math_columnline_)) {
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attr = GetValueAt(aTableFrame, ColumnLinesProperty(),
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nsGkAtoms::columnlines_, colIndex-1);
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if (attr) {
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// set our special _moz attribute without notifying a reflow
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cellContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_columnline_,
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nsDependentString(attr), PR_FALSE);
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}
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}
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}
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// map all attribues within a table -- requires the indices of rows and cells.
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// so it can only happen after they are made ready by the table base class.
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static void
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MapAllAttributesIntoCSS(nsIFrame* aTableFrame)
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{
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// mtable is simple and only has one (pseudo) row-group
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nsIFrame* rgFrame = aTableFrame->GetFirstChild(nsnull);
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if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
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return;
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nsIFrame* rowFrame = rgFrame->GetFirstChild(nsnull);
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for ( ; rowFrame; rowFrame = rowFrame->GetNextSibling()) {
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DEBUG_VERIFY_THAT_FRAME_IS(rowFrame, TABLE_ROW);
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if (rowFrame->GetType() == nsGkAtoms::tableRowFrame) {
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MapRowAttributesIntoCSS(aTableFrame, rowFrame);
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nsIFrame* cellFrame = rowFrame->GetFirstChild(nsnull);
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for ( ; cellFrame; cellFrame = cellFrame->GetNextSibling()) {
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DEBUG_VERIFY_THAT_FRAME_IS(cellFrame, TABLE_CELL);
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if (IS_TABLE_CELL(cellFrame->GetType())) {
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MapColAttributesIntoCSS(aTableFrame, rowFrame, cellFrame);
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}
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}
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}
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}
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}
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// the align attribute of mtable can have a row number which indicates
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// from where to anchor the table, e.g., top5 means anchor the table at
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// the top of the 5th row, axis-1 means anchor the table on the axis of
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// the last row (could have been nicer if the REC used the '#' separator,
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// e.g., top#5, or axis#-1)
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enum eAlign {
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eAlign_top,
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eAlign_bottom,
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eAlign_center,
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eAlign_baseline,
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eAlign_axis
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};
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static void
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ParseAlignAttribute(nsString& aValue, eAlign& aAlign, PRInt32& aRowIndex)
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{
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// by default, the table is centered about the axis
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aRowIndex = 0;
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aAlign = eAlign_axis;
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PRInt32 len = 0;
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if (0 == aValue.Find("top")) {
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len = 3; // 3 is the length of 'top'
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aAlign = eAlign_top;
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}
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else if (0 == aValue.Find("bottom")) {
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len = 6; // 6 is the length of 'bottom'
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aAlign = eAlign_bottom;
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}
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else if (0 == aValue.Find("center")) {
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len = 6; // 6 is the length of 'center'
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aAlign = eAlign_center;
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}
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else if (0 == aValue.Find("baseline")) {
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len = 8; // 8 is the length of 'baseline'
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aAlign = eAlign_baseline;
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}
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else if (0 == aValue.Find("axis")) {
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len = 4; // 4 is the length of 'axis'
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aAlign = eAlign_axis;
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}
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if (len) {
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PRInt32 error;
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aValue.Cut(0, len); // aValue is not a const here
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aRowIndex = aValue.ToInteger(&error);
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if (error)
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aRowIndex = 0;
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}
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}
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#ifdef DEBUG_rbs_off
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// call ListMathMLTree(mParent) to get the big picture
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static void
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ListMathMLTree(nsIFrame* atLeast)
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{
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// climb up to <math> or <body> if <math> isn't there
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nsIFrame* f = atLeast;
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for ( ; f; f = f->GetParent()) {
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nsIContent* c = f->GetContent();
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if (!c || c->Tag() == nsGkAtoms::math || c->Tag() == nsGkAtoms::body)
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break;
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}
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if (!f) f = atLeast;
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f->List(stdout, 0);
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}
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#endif
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// --------
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// implementation of nsMathMLmtableOuterFrame
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NS_QUERYFRAME_HEAD(nsMathMLmtableOuterFrame)
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NS_QUERYFRAME_ENTRY(nsIMathMLFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsTableOuterFrame)
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nsIFrame*
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NS_NewMathMLmtableOuterFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsMathMLmtableOuterFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtableOuterFrame)
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nsMathMLmtableOuterFrame::~nsMathMLmtableOuterFrame()
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{
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}
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NS_IMETHODIMP
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nsMathMLmtableOuterFrame::InheritAutomaticData(nsIFrame* aParent)
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{
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// XXX the REC says that by default, displaystyle=false in <mtable>
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// let the base class inherit the displaystyle from our parent
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nsMathMLFrame::InheritAutomaticData(aParent);
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// see if the displaystyle attribute is there and let it override what we inherited
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if (mContent->Tag() == nsGkAtoms::mtable_)
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nsMathMLFrame::FindAttrDisplaystyle(mContent, mPresentationData);
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return NS_OK;
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}
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// displaystyle is special in mtable...
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// Since UpdatePresentation() and UpdatePresentationDataFromChildAt() can be called
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// by a parent, ensure that the displaystyle attribute of mtable takes precedence
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NS_IMETHODIMP
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nsMathMLmtableOuterFrame::UpdatePresentationData(PRUint32 aFlagsValues,
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PRUint32 aWhichFlags)
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{
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if (NS_MATHML_HAS_EXPLICIT_DISPLAYSTYLE(mPresentationData.flags)) {
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// our current state takes precedence, disallow updating the displastyle
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aWhichFlags &= ~NS_MATHML_DISPLAYSTYLE;
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aFlagsValues &= ~NS_MATHML_DISPLAYSTYLE;
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}
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return nsMathMLFrame::UpdatePresentationData(aFlagsValues, aWhichFlags);
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}
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NS_IMETHODIMP
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nsMathMLmtableOuterFrame::UpdatePresentationDataFromChildAt(PRInt32 aFirstIndex,
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PRInt32 aLastIndex,
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PRUint32 aFlagsValues,
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PRUint32 aWhichFlags)
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{
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if (NS_MATHML_HAS_EXPLICIT_DISPLAYSTYLE(mPresentationData.flags)) {
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// our current state takes precedence, disallow updating the displastyle
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aWhichFlags &= ~NS_MATHML_DISPLAYSTYLE;
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aFlagsValues &= ~NS_MATHML_DISPLAYSTYLE;
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}
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nsMathMLContainerFrame::PropagatePresentationDataFromChildAt(this,
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aFirstIndex, aLastIndex, aFlagsValues, aWhichFlags);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMathMLmtableOuterFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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// Attributes specific to <mtable>:
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// frame : in mathml.css
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// framespacing : not yet supported
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// groupalign : not yet supported
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// equalrows : not yet supported
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// equalcolumns : not yet supported
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// displaystyle : here
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// align : in reflow
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// rowalign : here
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// rowlines : here
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// rowspacing : not yet supported
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// columnalign : here
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// columnlines : here
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// columnspacing : not yet supported
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// mtable is simple and only has one (pseudo) row-group inside our inner-table
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nsIFrame* tableFrame = mFrames.FirstChild();
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if (!tableFrame || tableFrame->GetType() != nsGkAtoms::tableFrame)
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return NS_OK;
|
|
nsIFrame* rgFrame = tableFrame->GetFirstChild(nsnull);
|
|
if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
|
|
return NS_OK;
|
|
|
|
// align - just need to issue a dirty (resize) reflow command
|
|
if (aAttribute == nsGkAtoms::align) {
|
|
PresContext()->PresShell()->
|
|
FrameNeedsReflow(this, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
|
|
return NS_OK;
|
|
}
|
|
|
|
// displaystyle - may seem innocuous, but it is actually very harsh --
|
|
// like changing an unit. Blow away and recompute all our automatic
|
|
// presentational data, and issue a style-changed reflow request
|
|
if (aAttribute == nsGkAtoms::displaystyle_) {
|
|
nsMathMLContainerFrame::RebuildAutomaticDataForChildren(mParent);
|
|
// Need to reflow the parent, not us, because this can actually
|
|
// affect siblings.
|
|
PresContext()->PresShell()->
|
|
FrameNeedsReflow(mParent, nsIPresShell::eStyleChange, NS_FRAME_IS_DIRTY);
|
|
return NS_OK;
|
|
}
|
|
|
|
// ...and the other attributes affect rows or columns in one way or another
|
|
nsIAtom* MOZrowAtom = nsnull;
|
|
nsIAtom* MOZcolAtom = nsnull;
|
|
if (aAttribute == nsGkAtoms::rowalign_)
|
|
MOZrowAtom = nsGkAtoms::_moz_math_rowalign_;
|
|
else if (aAttribute == nsGkAtoms::rowlines_)
|
|
MOZrowAtom = nsGkAtoms::_moz_math_rowline_;
|
|
else if (aAttribute == nsGkAtoms::columnalign_)
|
|
MOZcolAtom = nsGkAtoms::_moz_math_columnalign_;
|
|
else if (aAttribute == nsGkAtoms::columnlines_)
|
|
MOZcolAtom = nsGkAtoms::_moz_math_columnline_;
|
|
|
|
if (!MOZrowAtom && !MOZcolAtom)
|
|
return NS_OK;
|
|
|
|
nsPresContext* presContext = tableFrame->PresContext();
|
|
// clear any cached nsValueList for this table
|
|
presContext->PropertyTable()->
|
|
Delete(tableFrame, AttributeToProperty(aAttribute));
|
|
|
|
// unset any _moz attribute that we may have set earlier, and re-sync
|
|
nsIFrame* rowFrame = rgFrame->GetFirstChild(nsnull);
|
|
for ( ; rowFrame; rowFrame = rowFrame->GetNextSibling()) {
|
|
if (rowFrame->GetType() == nsGkAtoms::tableRowFrame) {
|
|
if (MOZrowAtom) { // let rows do the work
|
|
rowFrame->GetContent()->UnsetAttr(kNameSpaceID_None, MOZrowAtom, PR_FALSE);
|
|
MapRowAttributesIntoCSS(tableFrame, rowFrame);
|
|
} else { // let cells do the work
|
|
nsIFrame* cellFrame = rowFrame->GetFirstChild(nsnull);
|
|
for ( ; cellFrame; cellFrame = cellFrame->GetNextSibling()) {
|
|
if (IS_TABLE_CELL(cellFrame->GetType())) {
|
|
cellFrame->GetContent()->UnsetAttr(kNameSpaceID_None, MOZcolAtom, PR_FALSE);
|
|
MapColAttributesIntoCSS(tableFrame, rowFrame, cellFrame);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Explicitly request a re-resolve and reflow in our subtree to pick up any changes
|
|
presContext->PresShell()->FrameConstructor()->
|
|
PostRestyleEvent(mContent->AsElement(), eRestyle_Subtree,
|
|
nsChangeHint_ReflowFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsMathMLmtableOuterFrame::GetRowFrameAt(nsPresContext* aPresContext,
|
|
PRInt32 aRowIndex)
|
|
{
|
|
PRInt32 rowCount, colCount;
|
|
GetTableSize(rowCount, colCount);
|
|
|
|
// Negative indices mean to find upwards from the end.
|
|
if (aRowIndex < 0) {
|
|
aRowIndex = rowCount + aRowIndex;
|
|
} else {
|
|
// aRowIndex is 1-based, so convert it to a 0-based index
|
|
--aRowIndex;
|
|
}
|
|
|
|
// if our inner table says that the index is valid, find the row now
|
|
if (0 <= aRowIndex && aRowIndex <= rowCount) {
|
|
nsIFrame* tableFrame = mFrames.FirstChild();
|
|
if (!tableFrame || tableFrame->GetType() != nsGkAtoms::tableFrame)
|
|
return nsnull;
|
|
nsIFrame* rgFrame = tableFrame->GetFirstChild(nsnull);
|
|
if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
|
|
return nsnull;
|
|
nsTableIterator rowIter(*rgFrame);
|
|
nsIFrame* rowFrame = rowIter.First();
|
|
for ( ; rowFrame; rowFrame = rowIter.Next()) {
|
|
if (aRowIndex == 0) {
|
|
DEBUG_VERIFY_THAT_FRAME_IS(rowFrame, TABLE_ROW);
|
|
if (rowFrame->GetType() != nsGkAtoms::tableRowFrame)
|
|
return nsnull;
|
|
|
|
return rowFrame;
|
|
}
|
|
--aRowIndex;
|
|
}
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMathMLmtableOuterFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsresult rv;
|
|
nsAutoString value;
|
|
// we want to return a table that is anchored according to the align attribute
|
|
|
|
rv = nsTableOuterFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
|
|
aStatus);
|
|
NS_ASSERTION(aDesiredSize.height >= 0, "illegal height for mtable");
|
|
NS_ASSERTION(aDesiredSize.width >= 0, "illegal width for mtable");
|
|
|
|
// see if the user has set the align attribute on the <mtable>
|
|
// XXX should we also check <mstyle> ?
|
|
PRInt32 rowIndex = 0;
|
|
eAlign tableAlign = eAlign_axis;
|
|
GetAttribute(mContent, nsnull, nsGkAtoms::align, value);
|
|
if (!value.IsEmpty()) {
|
|
ParseAlignAttribute(value, tableAlign, rowIndex);
|
|
}
|
|
|
|
// adjustments if there is a specified row from where to anchor the table
|
|
// (conceptually: when there is no row of reference, picture the table as if
|
|
// it is wrapped in a single big fictional row at dy = 0, this way of
|
|
// doing so allows us to have a single code path for all cases).
|
|
nscoord dy = 0;
|
|
nscoord height = aDesiredSize.height;
|
|
nsIFrame* rowFrame = nsnull;
|
|
if (rowIndex) {
|
|
rowFrame = GetRowFrameAt(aPresContext, rowIndex);
|
|
if (rowFrame) {
|
|
// translate the coordinates to be relative to us
|
|
nsIFrame* frame = rowFrame;
|
|
height = frame->GetSize().height;
|
|
do {
|
|
dy += frame->GetPosition().y;
|
|
frame = frame->GetParent();
|
|
} while (frame != this);
|
|
}
|
|
}
|
|
switch (tableAlign) {
|
|
case eAlign_top:
|
|
aDesiredSize.ascent = dy;
|
|
break;
|
|
case eAlign_bottom:
|
|
aDesiredSize.ascent = dy + height;
|
|
break;
|
|
case eAlign_center:
|
|
aDesiredSize.ascent = dy + height/2;
|
|
break;
|
|
case eAlign_baseline:
|
|
if (rowFrame) {
|
|
// anchor the table on the baseline of the row of reference
|
|
nscoord rowAscent = ((nsTableRowFrame*)rowFrame)->GetMaxCellAscent();
|
|
if (rowAscent) { // the row has at least one cell with 'vertical-align: baseline'
|
|
aDesiredSize.ascent = dy + rowAscent;
|
|
break;
|
|
}
|
|
}
|
|
// in other situations, fallback to center
|
|
aDesiredSize.ascent = dy + height/2;
|
|
break;
|
|
case eAlign_axis:
|
|
default: {
|
|
// XXX should instead use style data from the row of reference here ?
|
|
nsRefPtr<nsFontMetrics> fm;
|
|
nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fm));
|
|
aReflowState.rendContext->SetFont(fm);
|
|
nscoord axisHeight;
|
|
GetAxisHeight(*aReflowState.rendContext,
|
|
aReflowState.rendContext->FontMetrics(),
|
|
axisHeight);
|
|
if (rowFrame) {
|
|
// anchor the table on the axis of the row of reference
|
|
// XXX fallback to baseline because it is a hard problem
|
|
// XXX need to fetch the axis of the row; would need rowalign=axis to work better
|
|
nscoord rowAscent = ((nsTableRowFrame*)rowFrame)->GetMaxCellAscent();
|
|
if (rowAscent) { // the row has at least one cell with 'vertical-align: baseline'
|
|
aDesiredSize.ascent = dy + rowAscent;
|
|
break;
|
|
}
|
|
}
|
|
// in other situations, fallback to using half of the height
|
|
aDesiredSize.ascent = dy + height/2 + axisHeight;
|
|
}
|
|
}
|
|
|
|
mReference.x = 0;
|
|
mReference.y = aDesiredSize.ascent;
|
|
|
|
// just make-up a bounding metrics
|
|
mBoundingMetrics = nsBoundingMetrics();
|
|
mBoundingMetrics.ascent = aDesiredSize.ascent;
|
|
mBoundingMetrics.descent = aDesiredSize.height - aDesiredSize.ascent;
|
|
mBoundingMetrics.width = aDesiredSize.width;
|
|
mBoundingMetrics.leftBearing = 0;
|
|
mBoundingMetrics.rightBearing = aDesiredSize.width;
|
|
|
|
aDesiredSize.mBoundingMetrics = mBoundingMetrics;
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsIFrame*
|
|
NS_NewMathMLmtableFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsMathMLmtableFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtableFrame)
|
|
|
|
nsMathMLmtableFrame::~nsMathMLmtableFrame()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMathMLmtableFrame::SetInitialChildList(nsIAtom* aListName,
|
|
nsFrameList& aChildList)
|
|
{
|
|
nsresult rv = nsTableFrame::SetInitialChildList(aListName, aChildList);
|
|
if (NS_FAILED(rv)) return rv;
|
|
MapAllAttributesIntoCSS(this);
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
nsMathMLmtableFrame::RestyleTable()
|
|
{
|
|
// re-sync MathML specific style data that may have changed
|
|
MapAllAttributesIntoCSS(this);
|
|
|
|
// Explicitly request a re-resolve and reflow in our subtree to pick up any changes
|
|
PresContext()->PresShell()->FrameConstructor()->
|
|
PostRestyleEvent(mContent->AsElement(), eRestyle_Subtree,
|
|
nsChangeHint_ReflowFrame);
|
|
}
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtrFrame
|
|
|
|
nsIFrame*
|
|
NS_NewMathMLmtrFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsMathMLmtrFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtrFrame)
|
|
|
|
nsMathMLmtrFrame::~nsMathMLmtrFrame()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMathMLmtrFrame::AttributeChanged(PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 aModType)
|
|
{
|
|
// Attributes specific to <mtr>:
|
|
// groupalign : Not yet supported.
|
|
// rowalign : Fully specified in mathml.css, and so HasAttributeDependentStyle() will
|
|
// pick it up and nsCSSFrameConstructor will issue a PostRestyleEvent().
|
|
// columnalign : Need an explicit re-style call.
|
|
|
|
if (aAttribute == nsGkAtoms::rowalign_) {
|
|
// unset any _moz attribute that we may have set earlier, and re-sync
|
|
mContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_rowalign_,
|
|
PR_FALSE);
|
|
MapRowAttributesIntoCSS(nsTableFrame::GetTableFrame(this), this);
|
|
// That's all - see comment above.
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aAttribute != nsGkAtoms::columnalign_)
|
|
return NS_OK;
|
|
|
|
nsPresContext* presContext = PresContext();
|
|
// Clear any cached columnalign's nsValueList for this row
|
|
presContext->PropertyTable()->Delete(this, AttributeToProperty(aAttribute));
|
|
|
|
// Clear any internal _moz attribute that we may have set earlier
|
|
// in our cells and re-sync their columnalign attribute
|
|
nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this);
|
|
nsIFrame* cellFrame = GetFirstChild(nsnull);
|
|
for ( ; cellFrame; cellFrame = cellFrame->GetNextSibling()) {
|
|
if (IS_TABLE_CELL(cellFrame->GetType())) {
|
|
cellFrame->GetContent()->
|
|
UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_columnalign_,
|
|
PR_FALSE);
|
|
MapColAttributesIntoCSS(tableFrame, this, cellFrame);
|
|
}
|
|
}
|
|
|
|
// Explicitly request a re-resolve and reflow in our subtree to pick up any changes
|
|
presContext->PresShell()->FrameConstructor()->
|
|
PostRestyleEvent(mContent->AsElement(), eRestyle_Subtree,
|
|
nsChangeHint_ReflowFrame);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtdFrame
|
|
|
|
nsIFrame*
|
|
NS_NewMathMLmtdFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsMathMLmtdFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtdFrame)
|
|
|
|
nsMathMLmtdFrame::~nsMathMLmtdFrame()
|
|
{
|
|
}
|
|
|
|
PRInt32
|
|
nsMathMLmtdFrame::GetRowSpan()
|
|
{
|
|
PRInt32 rowspan = 1;
|
|
|
|
// Don't look at the content's rowspan if we're not an mtd or a pseudo cell.
|
|
if ((mContent->Tag() == nsGkAtoms::mtd_) && !GetStyleContext()->GetPseudo()) {
|
|
nsAutoString value;
|
|
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::rowspan, value);
|
|
if (!value.IsEmpty()) {
|
|
PRInt32 error;
|
|
rowspan = value.ToInteger(&error);
|
|
if (error || rowspan < 0)
|
|
rowspan = 1;
|
|
rowspan = NS_MIN(rowspan, MAX_ROWSPAN);
|
|
}
|
|
}
|
|
return rowspan;
|
|
}
|
|
|
|
PRInt32
|
|
nsMathMLmtdFrame::GetColSpan()
|
|
{
|
|
PRInt32 colspan = 1;
|
|
|
|
// Don't look at the content's colspan if we're not an mtd or a pseudo cell.
|
|
if ((mContent->Tag() == nsGkAtoms::mtd_) && !GetStyleContext()->GetPseudo()) {
|
|
nsAutoString value;
|
|
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::columnspan_, value);
|
|
if (!value.IsEmpty()) {
|
|
PRInt32 error;
|
|
colspan = value.ToInteger(&error);
|
|
if (error || colspan < 0 || colspan > MAX_COLSPAN)
|
|
colspan = 1;
|
|
}
|
|
}
|
|
return colspan;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMathMLmtdFrame::AttributeChanged(PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 aModType)
|
|
{
|
|
// Attributes specific to <mtd>:
|
|
// groupalign : Not yet supported
|
|
// rowalign : in mathml.css
|
|
// columnalign : here
|
|
// rowspan : here
|
|
// columnspan : here
|
|
|
|
if (aAttribute == nsGkAtoms::columnalign_) {
|
|
// unset any _moz attribute that we may have set earlier, and re-sync
|
|
mContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_moz_math_columnalign_,
|
|
PR_FALSE);
|
|
MapColAttributesIntoCSS(nsTableFrame::GetTableFrame(this), mParent, this);
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aAttribute == nsGkAtoms::rowspan ||
|
|
aAttribute == nsGkAtoms::columnspan_) {
|
|
// use the naming expected by the base class
|
|
if (aAttribute == nsGkAtoms::columnspan_)
|
|
aAttribute = nsGkAtoms::colspan;
|
|
return nsTableCellFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtdInnerFrame
|
|
|
|
NS_QUERYFRAME_HEAD(nsMathMLmtdInnerFrame)
|
|
NS_QUERYFRAME_ENTRY(nsIMathMLFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
|
|
|
|
nsIFrame*
|
|
NS_NewMathMLmtdInnerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsMathMLmtdInnerFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtdInnerFrame)
|
|
|
|
nsMathMLmtdInnerFrame::~nsMathMLmtdInnerFrame()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsMathMLmtdInnerFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
// Let the base class do the reflow
|
|
nsresult rv = nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// more about <maligngroup/> and <malignmark/> later
|
|
// ...
|
|
return rv;
|
|
}
|