зеркало из https://github.com/mozilla/gecko-dev.git
933 строки
30 KiB
C++
933 строки
30 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMathMLmtableFrame.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 "nsNameSpaceManager.h"
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#include "nsRenderingContext.h"
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#include "nsCSSRendering.h"
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#include "nsTArray.h"
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#include "nsTableFrame.h"
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#include "celldata.h"
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#include "RestyleManager.h"
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#include <algorithm>
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#include "nsIScriptError.h"
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#include "nsContentUtils.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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static int8_t
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ParseStyleValue(nsIAtom* aAttribute, const nsAString& aAttributeValue)
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{
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if (aAttribute == nsGkAtoms::rowalign_) {
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if (aAttributeValue.EqualsLiteral("top"))
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return NS_STYLE_VERTICAL_ALIGN_TOP;
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else if (aAttributeValue.EqualsLiteral("bottom"))
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return NS_STYLE_VERTICAL_ALIGN_BOTTOM;
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else if (aAttributeValue.EqualsLiteral("center"))
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return NS_STYLE_VERTICAL_ALIGN_MIDDLE;
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else
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return NS_STYLE_VERTICAL_ALIGN_BASELINE;
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} else if (aAttribute == nsGkAtoms::columnalign_) {
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if (aAttributeValue.EqualsLiteral("left"))
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return NS_STYLE_TEXT_ALIGN_LEFT;
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else if (aAttributeValue.EqualsLiteral("right"))
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return NS_STYLE_TEXT_ALIGN_RIGHT;
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else
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return NS_STYLE_TEXT_ALIGN_CENTER;
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} else if (aAttribute == nsGkAtoms::rowlines_ ||
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aAttribute == nsGkAtoms::columnlines_) {
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if (aAttributeValue.EqualsLiteral("solid"))
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return NS_STYLE_BORDER_STYLE_SOLID;
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else if (aAttributeValue.EqualsLiteral("dashed"))
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return NS_STYLE_BORDER_STYLE_DASHED;
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else
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return NS_STYLE_BORDER_STYLE_NONE;
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} else {
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MOZ_CRASH("Unrecognized attribute.");
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}
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return -1;
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}
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static nsTArray<int8_t>*
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ExtractStyleValues(const nsAString& aString, nsIAtom* aAttribute,
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bool aAllowMultiValues)
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{
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nsTArray<int8_t>* styleArray = nullptr;
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const char16_t* start = aString.BeginReading();
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const char16_t* end = aString.EndReading();
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int32_t startIndex = 0;
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int32_t count = 0;
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while (start < end) {
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// Skip leading spaces.
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while ((start < end) && nsCRT::IsAsciiSpace(*start)) {
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start++;
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startIndex++;
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}
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// Look for the end of the string, or another space.
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while ((start < end) && !nsCRT::IsAsciiSpace(*start)) {
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start++;
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count++;
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}
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// Grab the value found and process it.
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if (count > 0) {
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if (!styleArray)
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styleArray = new nsTArray<int8_t>();
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// We want to return a null array if an attribute gives multiple values,
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// but multiple values aren't allowed.
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if (styleArray->Length() > 1 && !aAllowMultiValues) {
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delete styleArray;
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return nullptr;
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}
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nsDependentSubstring valueString(aString, startIndex, count);
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int8_t styleValue = ParseStyleValue(aAttribute, valueString);
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styleArray->AppendElement(styleValue);
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startIndex += count;
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count = 0;
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}
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}
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return styleArray;
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}
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static nsresult ReportParseError(nsIFrame* aFrame, const char16_t* aAttribute,
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const char16_t* aValue)
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{
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nsIContent* content = aFrame->GetContent();
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const char16_t* params[] =
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{ aValue, aAttribute, content->Tag()->GetUTF16String() };
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return nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
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NS_LITERAL_CSTRING("MathML"),
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content->OwnerDoc(),
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nsContentUtils::eMATHML_PROPERTIES,
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"AttributeParsingError", params, 3);
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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 into an nsTArray<int8_t> 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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static void
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DestroyStylePropertyList(void* aPropertyValue)
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{
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delete static_cast<nsTArray<int8_t>*>(aPropertyValue);
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}
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NS_DECLARE_FRAME_PROPERTY(RowAlignProperty, DestroyStylePropertyList)
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NS_DECLARE_FRAME_PROPERTY(RowLinesProperty, DestroyStylePropertyList)
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NS_DECLARE_FRAME_PROPERTY(ColumnAlignProperty, DestroyStylePropertyList)
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NS_DECLARE_FRAME_PROPERTY(ColumnLinesProperty, DestroyStylePropertyList)
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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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/* This method looks for a property that applies to a cell, but it looks
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* recursively because some cell properties can come from the cell, a row,
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* a table, etc. This function searches through the heirarchy for a property
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* and returns its value. The function stops searching after checking a <mtable>
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* frame.
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*/
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static nsTArray<int8_t>*
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FindCellProperty(const nsIFrame* aCellFrame,
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const FramePropertyDescriptor* aFrameProperty)
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{
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const nsIFrame* currentFrame = aCellFrame;
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nsTArray<int8_t>* propertyData = nullptr;
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while (currentFrame) {
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FrameProperties props = currentFrame->Properties();
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propertyData = static_cast<nsTArray<int8_t>*>(props.Get(aFrameProperty));
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bool frameIsTable = (currentFrame->GetType() == nsGkAtoms::tableFrame);
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if (propertyData || frameIsTable)
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currentFrame = nullptr; // A null frame pointer exits the loop
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else
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currentFrame = currentFrame->GetParent(); // Go to the parent frame
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}
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return propertyData;
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}
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static void
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ApplyBorderToStyle(const nsMathMLmtdFrame* aFrame,
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nsStyleBorder& aStyleBorder)
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{
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int32_t rowIndex;
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int32_t columnIndex;
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aFrame->GetRowIndex(rowIndex);
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aFrame->GetColIndex(columnIndex);
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nscoord borderWidth =
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aFrame->PresContext()->GetBorderWidthTable()[NS_STYLE_BORDER_WIDTH_THIN];
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nsTArray<int8_t>* rowLinesList =
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FindCellProperty(aFrame, RowLinesProperty());
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nsTArray<int8_t>* columnLinesList =
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FindCellProperty(aFrame, ColumnLinesProperty());
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// We don't place a row line on top of the first row
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if (rowIndex > 0 && rowLinesList) {
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// If the row number is greater than the number of provided rowline
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// values, we simply repeat the last value.
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int32_t listLength = rowLinesList->Length();
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if (rowIndex < listLength) {
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aStyleBorder.SetBorderStyle(NS_SIDE_TOP,
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rowLinesList->ElementAt(rowIndex - 1));
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} else {
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aStyleBorder.SetBorderStyle(NS_SIDE_TOP,
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rowLinesList->ElementAt(listLength - 1));
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}
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aStyleBorder.SetBorderWidth(NS_SIDE_TOP, borderWidth);
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}
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// We don't place a column line on the left of the first column.
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if (columnIndex > 0 && columnLinesList) {
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// If the column number is greater than the number of provided columline
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// values, we simply repeat the last value.
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int32_t listLength = columnLinesList->Length();
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if (columnIndex < listLength) {
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aStyleBorder.SetBorderStyle(NS_SIDE_LEFT,
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columnLinesList->ElementAt(columnIndex - 1));
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} else {
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aStyleBorder.SetBorderStyle(NS_SIDE_LEFT,
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columnLinesList->ElementAt(listLength - 1));
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}
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aStyleBorder.SetBorderWidth(NS_SIDE_LEFT, borderWidth);
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}
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}
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/*
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* A variant of the nsDisplayBorder contains special code to render a border
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* around a nsMathMLmtdFrame based on the rowline and columnline properties
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* set on the cell frame.
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*/
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class nsDisplaymtdBorder : public nsDisplayBorder {
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public:
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nsDisplaymtdBorder(nsDisplayListBuilder* aBuilder, nsMathMLmtdFrame* aFrame)
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: nsDisplayBorder(aBuilder, aFrame)
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{
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}
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) MOZ_OVERRIDE
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{
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nsStyleBorder styleBorder = *mFrame->StyleBorder();
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ApplyBorderToStyle(static_cast<nsMathMLmtdFrame*>(mFrame), styleBorder);
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return CalculateBounds(styleBorder);
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}
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virtual void Paint(nsDisplayListBuilder* aBuilder, nsRenderingContext* aCtx) MOZ_OVERRIDE
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{
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nsStyleBorder styleBorder = *mFrame->StyleBorder();
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ApplyBorderToStyle(static_cast<nsMathMLmtdFrame*>(mFrame), styleBorder);
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nsPoint offset = ToReferenceFrame();
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nsCSSRendering::PaintBorderWithStyleBorder(mFrame->PresContext(), *aCtx,
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mFrame, mVisibleRect,
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nsRect(offset,
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mFrame->GetSize()),
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styleBorder,
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mFrame->StyleContext(),
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mFrame->GetSkipSides());
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}
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};
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#ifdef DEBUG
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#define DEBUG_VERIFY_THAT_FRAME_IS(_frame, _expected) \
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NS_ASSERTION(NS_STYLE_DISPLAY_##_expected == _frame->StyleDisplay()->mDisplay, "internal error");
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#else
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#define DEBUG_VERIFY_THAT_FRAME_IS(_frame, _expected)
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#endif
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static void
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ParseFrameAttribute(nsIFrame* aFrame, nsIAtom* aAttribute,
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bool aAllowMultiValues)
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{
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nsAutoString attrValue;
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nsIContent* frameContent = aFrame->GetContent();
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frameContent->GetAttr(kNameSpaceID_None, aAttribute, attrValue);
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if (!attrValue.IsEmpty()) {
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nsTArray<int8_t>* valueList =
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ExtractStyleValues(attrValue, aAttribute, aAllowMultiValues);
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// If valueList is null, that indicates a problem with the attribute value.
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// Only set properties on a valid attribute value.
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if (valueList) {
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// The code reading the property assumes that this list is nonempty.
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NS_ASSERTION(valueList->Length() >= 1, "valueList should not be empty!");
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FrameProperties props = aFrame->Properties();
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props.Set(AttributeToProperty(aAttribute), valueList);
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} else {
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ReportParseError(aFrame, aAttribute->GetUTF16String(), attrValue.get());
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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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// Map mtable rowalign & rowlines.
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ParseFrameAttribute(aTableFrame, nsGkAtoms::rowalign_, true);
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ParseFrameAttribute(aTableFrame, nsGkAtoms::rowlines_, true);
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// Map mtable columnalign & columnlines.
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ParseFrameAttribute(aTableFrame, nsGkAtoms::columnalign_, true);
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ParseFrameAttribute(aTableFrame, nsGkAtoms::columnlines_, true);
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// mtable is simple and only has one (pseudo) row-group
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nsIFrame* rgFrame = aTableFrame->GetFirstPrincipalChild();
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if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
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return;
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nsIFrame* rowFrame = rgFrame->GetFirstPrincipalChild();
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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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// Map row rowalign.
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ParseFrameAttribute(rowFrame, nsGkAtoms::rowalign_, false);
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// Map row columnalign.
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ParseFrameAttribute(rowFrame, nsGkAtoms::columnalign_, true);
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nsIFrame* cellFrame = rowFrame->GetFirstPrincipalChild();
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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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// Map cell rowalign.
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ParseFrameAttribute(cellFrame, nsGkAtoms::rowalign_, false);
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// Map row columnalign.
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ParseFrameAttribute(cellFrame, nsGkAtoms::columnalign_, false);
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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., top 5 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
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// The REC says that the syntax is
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// '\s*(top|bottom|center|baseline|axis)(\s+-?[0-9]+)?\s*'
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// the parsing could have been simpler with that syntax
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// but for backward compatibility we make optional
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// the whitespaces between the alignment name and the row number
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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, int32_t& 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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int32_t len = 0;
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// we only have to remove the leading spaces because
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// ToInteger ignores the whitespaces around the number
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aValue.CompressWhitespace(true, false);
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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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nsresult 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 (NS_FAILED(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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nsresult
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nsMathMLmtableOuterFrame::AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t 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 and in mathml.css
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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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NS_ASSERTION(tableFrame && tableFrame->GetType() == nsGkAtoms::tableFrame,
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"should always have an inner table frame");
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nsIFrame* rgFrame = tableFrame->GetFirstPrincipalChild();
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if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
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return NS_OK;
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// align - just need to issue a dirty (resize) reflow command
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if (aAttribute == nsGkAtoms::align) {
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PresContext()->PresShell()->
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FrameNeedsReflow(this, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
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return NS_OK;
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}
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// displaystyle - may seem innocuous, but it is actually very harsh --
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// like changing an unit. Blow away and recompute all our automatic
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// presentational data, and issue a style-changed reflow request
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if (aAttribute == nsGkAtoms::displaystyle_) {
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nsMathMLContainerFrame::RebuildAutomaticDataForChildren(mParent);
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// Need to reflow the parent, not us, because this can actually
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// affect siblings.
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PresContext()->PresShell()->
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FrameNeedsReflow(mParent, nsIPresShell::eStyleChange, NS_FRAME_IS_DIRTY);
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return NS_OK;
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}
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// ...and the other attributes affect rows or columns in one way or another
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// Ignore attributes that do not affect layout.
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if (aAttribute != nsGkAtoms::rowalign_ &&
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aAttribute != nsGkAtoms::rowlines_ &&
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aAttribute != nsGkAtoms::columnalign_ &&
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aAttribute != nsGkAtoms::columnlines_) {
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|
return NS_OK;
|
|
}
|
|
|
|
nsPresContext* presContext = tableFrame->PresContext();
|
|
|
|
// clear any cached property list for this table
|
|
presContext->PropertyTable()->
|
|
Delete(tableFrame, AttributeToProperty(aAttribute));
|
|
|
|
// Reparse the new attribute on the table.
|
|
ParseFrameAttribute(tableFrame, aAttribute, true);
|
|
|
|
// Explicitly request a reflow in our subtree to pick up any changes
|
|
presContext->PresShell()->
|
|
FrameNeedsReflow(this, nsIPresShell::eStyleChange, NS_FRAME_IS_DIRTY);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsMathMLmtableOuterFrame::GetRowFrameAt(nsPresContext* aPresContext,
|
|
int32_t aRowIndex)
|
|
{
|
|
int32_t rowCount = GetRowCount();
|
|
|
|
// 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();
|
|
NS_ASSERTION(tableFrame && tableFrame->GetType() == nsGkAtoms::tableFrame,
|
|
"should always have an inner table frame");
|
|
nsIFrame* rgFrame = tableFrame->GetFirstPrincipalChild();
|
|
if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
|
|
return nullptr;
|
|
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 nullptr;
|
|
|
|
return rowFrame;
|
|
}
|
|
--aRowIndex;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
nsMathMLmtableOuterFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
nsAutoString value;
|
|
// we want to return a table that is anchored according to the align attribute
|
|
|
|
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>
|
|
int32_t rowIndex = 0;
|
|
eAlign tableAlign = eAlign_axis;
|
|
mContent->GetAttr(kNameSpaceID_None, 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 = nullptr;
|
|
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.SetTopAscent(dy);
|
|
break;
|
|
case eAlign_bottom:
|
|
aDesiredSize.SetTopAscent(dy + height);
|
|
break;
|
|
case eAlign_center:
|
|
aDesiredSize.SetTopAscent(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.SetTopAscent(dy + rowAscent);
|
|
break;
|
|
}
|
|
}
|
|
// in other situations, fallback to center
|
|
aDesiredSize.SetTopAscent(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.SetTopAscent(dy + rowAscent);
|
|
break;
|
|
}
|
|
}
|
|
// in other situations, fallback to using half of the height
|
|
aDesiredSize.SetTopAscent(dy + height / 2 + axisHeight);
|
|
}
|
|
}
|
|
|
|
mReference.x = 0;
|
|
mReference.y = aDesiredSize.TopAscent();
|
|
|
|
// just make-up a bounding metrics
|
|
mBoundingMetrics = nsBoundingMetrics();
|
|
mBoundingMetrics.ascent = aDesiredSize.TopAscent();
|
|
mBoundingMetrics.descent = aDesiredSize.Height() - aDesiredSize.TopAscent();
|
|
mBoundingMetrics.width = aDesiredSize.Width();
|
|
mBoundingMetrics.leftBearing = 0;
|
|
mBoundingMetrics.rightBearing = aDesiredSize.Width();
|
|
|
|
aDesiredSize.mBoundingMetrics = mBoundingMetrics;
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
|
|
}
|
|
|
|
nsIFrame*
|
|
NS_NewMathMLmtableFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsMathMLmtableFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtableFrame)
|
|
|
|
nsMathMLmtableFrame::~nsMathMLmtableFrame()
|
|
{
|
|
}
|
|
|
|
nsresult
|
|
nsMathMLmtableFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList)
|
|
{
|
|
nsresult rv = nsTableFrame::SetInitialChildList(aListID, 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()->RestyleManager()->
|
|
PostRestyleEvent(mContent->AsElement(), eRestyle_Subtree,
|
|
nsChangeHint_AllReflowHints);
|
|
}
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtrFrame
|
|
|
|
nsIFrame*
|
|
NS_NewMathMLmtrFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
|
|
{
|
|
return new (aPresShell) nsMathMLmtrFrame(aContext);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtrFrame)
|
|
|
|
nsMathMLmtrFrame::~nsMathMLmtrFrame()
|
|
{
|
|
}
|
|
|
|
nsresult
|
|
nsMathMLmtrFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
// Attributes specific to <mtr>:
|
|
// groupalign : Not yet supported.
|
|
// rowalign : Here
|
|
// columnalign : Here
|
|
|
|
nsPresContext* presContext = PresContext();
|
|
|
|
if (aAttribute != nsGkAtoms::rowalign_ &&
|
|
aAttribute != nsGkAtoms::columnalign_) {
|
|
return NS_OK;
|
|
}
|
|
|
|
presContext->PropertyTable()->Delete(this, AttributeToProperty(aAttribute));
|
|
|
|
bool allowMultiValues = (aAttribute == nsGkAtoms::columnalign_);
|
|
|
|
// Reparse the new attribute.
|
|
ParseFrameAttribute(this, aAttribute, allowMultiValues);
|
|
|
|
// Explicitly request a reflow in our subtree to pick up any changes
|
|
presContext->PresShell()->
|
|
FrameNeedsReflow(this, nsIPresShell::eStyleChange, NS_FRAME_IS_DIRTY);
|
|
|
|
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()
|
|
{
|
|
}
|
|
|
|
int32_t
|
|
nsMathMLmtdFrame::GetRowSpan()
|
|
{
|
|
int32_t 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_) && !StyleContext()->GetPseudo()) {
|
|
nsAutoString value;
|
|
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::rowspan, value);
|
|
if (!value.IsEmpty()) {
|
|
nsresult error;
|
|
rowspan = value.ToInteger(&error);
|
|
if (NS_FAILED(error) || rowspan < 0)
|
|
rowspan = 1;
|
|
rowspan = std::min(rowspan, MAX_ROWSPAN);
|
|
}
|
|
}
|
|
return rowspan;
|
|
}
|
|
|
|
int32_t
|
|
nsMathMLmtdFrame::GetColSpan()
|
|
{
|
|
int32_t 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_) && !StyleContext()->GetPseudo()) {
|
|
nsAutoString value;
|
|
mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::columnspan_, value);
|
|
if (!value.IsEmpty()) {
|
|
nsresult error;
|
|
colspan = value.ToInteger(&error);
|
|
if (NS_FAILED(error) || colspan < 0 || colspan > MAX_COLSPAN)
|
|
colspan = 1;
|
|
}
|
|
}
|
|
return colspan;
|
|
}
|
|
|
|
nsresult
|
|
nsMathMLmtdFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType)
|
|
{
|
|
// Attributes specific to <mtd>:
|
|
// groupalign : Not yet supported
|
|
// rowalign : here
|
|
// columnalign : here
|
|
// rowspan : here
|
|
// columnspan : here
|
|
|
|
if (aAttribute == nsGkAtoms::rowalign_ ||
|
|
aAttribute == nsGkAtoms::columnalign_) {
|
|
|
|
nsPresContext* presContext = PresContext();
|
|
presContext->PropertyTable()->Delete(this, AttributeToProperty(aAttribute));
|
|
|
|
// Reparse the attribute.
|
|
ParseFrameAttribute(this, aAttribute, false);
|
|
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;
|
|
}
|
|
|
|
uint8_t
|
|
nsMathMLmtdFrame::GetVerticalAlign() const
|
|
{
|
|
// Set the default alignment in case no alignment was specified
|
|
uint8_t alignment = nsTableCellFrame::GetVerticalAlign();
|
|
|
|
nsTArray<int8_t>* alignmentList = FindCellProperty(this, RowAlignProperty());
|
|
|
|
if (alignmentList) {
|
|
int32_t rowIndex;
|
|
GetRowIndex(rowIndex);
|
|
|
|
// If the row number is greater than the number of provided rowalign values,
|
|
// we simply repeat the last value.
|
|
if (rowIndex < (int32_t)alignmentList->Length())
|
|
alignment = alignmentList->ElementAt(rowIndex);
|
|
else
|
|
alignment = alignmentList->ElementAt(alignmentList->Length() - 1);
|
|
}
|
|
|
|
return alignment;
|
|
}
|
|
|
|
nsresult
|
|
nsMathMLmtdFrame::ProcessBorders(nsTableFrame* aFrame,
|
|
nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
|
|
nsDisplaymtdBorder(aBuilder, this));
|
|
return NS_OK;
|
|
}
|
|
|
|
nsMargin*
|
|
nsMathMLmtdFrame::GetBorderWidth(nsMargin& aBorder) const
|
|
{
|
|
nsStyleBorder styleBorder = *StyleBorder();
|
|
ApplyBorderToStyle(this, styleBorder);
|
|
aBorder = styleBorder.GetComputedBorder();
|
|
return &aBorder;
|
|
}
|
|
|
|
// --------
|
|
// 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(nsStyleContext* aContext)
|
|
: nsBlockFrame(aContext)
|
|
{
|
|
// Make a copy of the parent nsStyleText for later modificaiton.
|
|
mUniqueStyleText = new (PresContext()) nsStyleText(*StyleText());
|
|
}
|
|
|
|
nsMathMLmtdInnerFrame::~nsMathMLmtdInnerFrame()
|
|
{
|
|
mUniqueStyleText->Destroy(PresContext());
|
|
}
|
|
|
|
void
|
|
nsMathMLmtdInnerFrame::Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
// Let the base class do the reflow
|
|
nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
|
|
|
|
// more about <maligngroup/> and <malignmark/> later
|
|
// ...
|
|
}
|
|
|
|
const
|
|
nsStyleText* nsMathMLmtdInnerFrame::StyleTextForLineLayout()
|
|
{
|
|
// Set the default alignment in case nothing was specified
|
|
uint8_t alignment = StyleText()->mTextAlign;
|
|
|
|
nsTArray<int8_t>* alignmentList =
|
|
FindCellProperty(this, ColumnAlignProperty());
|
|
|
|
if (alignmentList) {
|
|
nsMathMLmtdFrame* cellFrame = (nsMathMLmtdFrame*)GetParent();
|
|
int32_t columnIndex;
|
|
cellFrame->GetColIndex(columnIndex);
|
|
|
|
// If the column number is greater than the number of provided columalign
|
|
// values, we simply repeat the last value.
|
|
if (columnIndex < (int32_t)alignmentList->Length())
|
|
alignment = alignmentList->ElementAt(columnIndex);
|
|
else
|
|
alignment = alignmentList->ElementAt(alignmentList->Length() - 1);
|
|
}
|
|
|
|
mUniqueStyleText->mTextAlign = alignment;
|
|
return mUniqueStyleText;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsMathMLmtdInnerFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
|
|
{
|
|
nsBlockFrame::DidSetStyleContext(aOldStyleContext);
|
|
mUniqueStyleText->Destroy(PresContext());
|
|
mUniqueStyleText = new (PresContext()) nsStyleText(*StyleText());
|
|
}
|