forked from mirrors/gecko-dev
1226 lines
43 KiB
C++
1226 lines
43 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "gfxContext.h"
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#include "nsMathMLmtableFrame.h"
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#include "nsPresContext.h"
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#include "nsStyleConsts.h"
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#include "nsNameSpaceManager.h"
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#include "nsCSSRendering.h"
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#include "nsMathMLElement.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 "mozilla/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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using namespace mozilla::image;
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//
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// <mtable> -- table or matrix - implementation
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//
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static int8_t ParseStyleValue(nsAtom* aAttribute,
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const nsAString& aAttributeValue) {
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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 static_cast<int8_t>(StyleBorderStyle::Solid);
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else if (aAttributeValue.EqualsLiteral("dashed"))
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return static_cast<int8_t>(StyleBorderStyle::Dashed);
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else
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return static_cast<int8_t>(StyleBorderStyle::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>* ExtractStyleValues(const nsAString& aString,
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nsAtom* aAttribute,
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bool aAllowMultiValues) {
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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) 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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nsIContent* content = aFrame->GetContent();
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const char16_t* params[] = {
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aValue, aAttribute, content->NodeInfo()->NameAtom()->GetUTF16String()};
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return nsContentUtils::ReportToConsole(
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nsIScriptError::errorFlag, NS_LITERAL_CSTRING("Layout: MathML"),
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content->OwnerDoc(), 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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NS_DECLARE_FRAME_PROPERTY_DELETABLE(RowAlignProperty, nsTArray<int8_t>)
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NS_DECLARE_FRAME_PROPERTY_DELETABLE(RowLinesProperty, nsTArray<int8_t>)
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NS_DECLARE_FRAME_PROPERTY_DELETABLE(ColumnAlignProperty, nsTArray<int8_t>)
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NS_DECLARE_FRAME_PROPERTY_DELETABLE(ColumnLinesProperty, nsTArray<int8_t>)
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static const FramePropertyDescriptor<nsTArray<int8_t>>* AttributeToProperty(
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nsAtom* aAttribute) {
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if (aAttribute == nsGkAtoms::rowalign_) return RowAlignProperty();
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if (aAttribute == nsGkAtoms::rowlines_) return RowLinesProperty();
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if (aAttribute == nsGkAtoms::columnalign_) 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 hierarchy 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>* FindCellProperty(
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const nsIFrame* aCellFrame,
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const FramePropertyDescriptor<nsTArray<int8_t>>* aFrameProperty) {
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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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propertyData = currentFrame->GetProperty(aFrameProperty);
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bool frameIsTable = (currentFrame->IsTableFrame());
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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 ApplyBorderToStyle(const nsMathMLmtdFrame* aFrame,
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nsStyleBorder& aStyleBorder) {
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uint32_t rowIndex = aFrame->RowIndex();
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uint32_t columnIndex = aFrame->ColIndex();
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nscoord borderWidth = nsPresContext::CSSPixelsToAppUnits(1);
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nsTArray<int8_t>* rowLinesList = 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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uint32_t listLength = rowLinesList->Length();
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if (rowIndex < listLength) {
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aStyleBorder.SetBorderStyle(
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eSideTop,
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static_cast<StyleBorderStyle>(rowLinesList->ElementAt(rowIndex - 1)));
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} else {
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aStyleBorder.SetBorderStyle(eSideTop,
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static_cast<StyleBorderStyle>(
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rowLinesList->ElementAt(listLength - 1)));
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}
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aStyleBorder.SetBorderWidth(eSideTop, 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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uint32_t listLength = columnLinesList->Length();
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if (columnIndex < listLength) {
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aStyleBorder.SetBorderStyle(
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eSideLeft, static_cast<StyleBorderStyle>(
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columnLinesList->ElementAt(columnIndex - 1)));
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} else {
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aStyleBorder.SetBorderStyle(
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eSideLeft, static_cast<StyleBorderStyle>(
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columnLinesList->ElementAt(listLength - 1)));
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}
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aStyleBorder.SetBorderWidth(eSideLeft, borderWidth);
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}
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}
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static nsMargin ComputeBorderOverflow(nsMathMLmtdFrame* aFrame,
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const nsStyleBorder& aStyleBorder) {
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nsMargin overflow;
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int32_t rowIndex;
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int32_t columnIndex;
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nsTableFrame* table = aFrame->GetTableFrame();
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aFrame->GetCellIndexes(rowIndex, columnIndex);
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if (!columnIndex) {
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overflow.left = table->GetColSpacing(-1);
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overflow.right = table->GetColSpacing(0) / 2;
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} else if (columnIndex == table->GetColCount() - 1) {
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overflow.left = table->GetColSpacing(columnIndex - 1) / 2;
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overflow.right = table->GetColSpacing(columnIndex + 1);
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} else {
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overflow.left = table->GetColSpacing(columnIndex - 1) / 2;
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overflow.right = table->GetColSpacing(columnIndex) / 2;
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}
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if (!rowIndex) {
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overflow.top = table->GetRowSpacing(-1);
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overflow.bottom = table->GetRowSpacing(0) / 2;
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} else if (rowIndex == table->GetRowCount() - 1) {
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overflow.top = table->GetRowSpacing(rowIndex - 1) / 2;
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overflow.bottom = table->GetRowSpacing(rowIndex + 1);
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} else {
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overflow.top = table->GetRowSpacing(rowIndex - 1) / 2;
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overflow.bottom = table->GetRowSpacing(rowIndex) / 2;
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}
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return overflow;
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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 final : 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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nsDisplayItemGeometry* AllocateGeometry(
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nsDisplayListBuilder* aBuilder) override {
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return new nsDisplayItemGenericImageGeometry(this, aBuilder);
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}
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void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
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const nsDisplayItemGeometry* aGeometry,
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nsRegion* aInvalidRegion) const override {
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auto geometry =
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static_cast<const nsDisplayItemGenericImageGeometry*>(aGeometry);
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if (aBuilder->ShouldSyncDecodeImages() &&
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geometry->ShouldInvalidateToSyncDecodeImages()) {
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bool snap;
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aInvalidRegion->Or(*aInvalidRegion, GetBounds(aBuilder, &snap));
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}
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nsDisplayItem::ComputeInvalidationRegion(aBuilder, aGeometry,
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aInvalidRegion);
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}
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
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bool* aSnap) const override {
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*aSnap = true;
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nsStyleBorder styleBorder = *mFrame->StyleBorder();
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nsMathMLmtdFrame* frame = static_cast<nsMathMLmtdFrame*>(mFrame);
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ApplyBorderToStyle(frame, styleBorder);
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nsRect bounds = CalculateBounds<nsRect>(styleBorder);
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nsMargin overflow = ComputeBorderOverflow(frame, styleBorder);
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bounds.Inflate(overflow);
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return bounds;
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}
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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gfxContext* aCtx) override {
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nsStyleBorder styleBorder = *mFrame->StyleBorder();
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nsMathMLmtdFrame* frame = static_cast<nsMathMLmtdFrame*>(mFrame);
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ApplyBorderToStyle(frame, styleBorder);
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nsRect bounds = nsRect(ToReferenceFrame(), mFrame->GetSize());
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nsMargin overflow = ComputeBorderOverflow(frame, styleBorder);
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bounds.Inflate(overflow);
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PaintBorderFlags flags = aBuilder->ShouldSyncDecodeImages()
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? PaintBorderFlags::SYNC_DECODE_IMAGES
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: PaintBorderFlags();
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ImgDrawResult result = nsCSSRendering::PaintBorderWithStyleBorder(
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mFrame->PresContext(), *aCtx, mFrame, GetPaintRect(), bounds,
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styleBorder, mFrame->Style(), flags, mFrame->GetSkipSides());
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nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, result);
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}
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bool CreateWebRenderCommands(
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mozilla::wr::DisplayListBuilder& aBuilder,
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mozilla::wr::IpcResourceUpdateQueue& aResources,
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const StackingContextHelper& aSc,
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mozilla::layers::RenderRootStateManager* aManager,
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nsDisplayListBuilder* aDisplayListBuilder) override {
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return false;
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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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MOZ_ASSERT( \
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mozilla::StyleDisplay::_expected == _frame->StyleDisplay()->mDisplay, \
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"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 ParseFrameAttribute(nsIFrame* aFrame, nsAtom* aAttribute,
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bool aAllowMultiValues) {
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nsAutoString attrValue;
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Element* frameElement = aFrame->GetContent()->AsElement();
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frameElement->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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aFrame->SetProperty(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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// rowspacing
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//
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// Specifies the distance between successive rows in an mtable. Multiple
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// lengths can be specified, each corresponding to its respective position
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// between rows. For example:
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//
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// [ROW_0]
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// rowspace_0
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// [ROW_1]
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// rowspace_1
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// [ROW_2]
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//
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// If the number of row gaps exceeds the number of lengths specified, the final
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// specified length is repeated. Additional lengths are ignored.
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//
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// values: (length)+
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// default: 1.0ex
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//
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// Unitless values are permitted and provide a multiple of the default value
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// Negative values are forbidden.
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//
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// columnspacing
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//
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// Specifies the distance between successive columns in an mtable. Multiple
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// lengths can be specified, each corresponding to its respective position
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// between columns. For example:
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//
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// [COLUMN_0] columnspace_0 [COLUMN_1] columnspace_1 [COLUMN_2]
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//
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// If the number of column gaps exceeds the number of lengths specified, the
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// final specified length is repeated. Additional lengths are ignored.
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//
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// values: (length)+
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// default: 0.8em
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//
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// Unitless values are permitted and provide a multiple of the default value
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// Negative values are forbidden.
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//
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// framespacing
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//
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// Specifies the distance between the mtable and its frame (if any). The
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// first value specified provides the spacing between the left and right edge
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// of the table and the frame, the second value determines the spacing between
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// the top and bottom edges and the frame.
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//
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// An error is reported if only one length is passed. Any additional lengths
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// are ignored
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//
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// values: length length
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// default: 0em 0ex If frame attribute is "none" or not specified,
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// 0.4em 0.5ex otherwise
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//
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// Unitless values are permitted and provide a multiple of the default value
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// Negative values are forbidden.
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//
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static const float kDefaultRowspacingEx = 1.0f;
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static const float kDefaultColumnspacingEm = 0.8f;
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static const float kDefaultFramespacingArg0Em = 0.4f;
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static const float kDefaultFramespacingArg1Ex = 0.5f;
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static void ExtractSpacingValues(const nsAString& aString, nsAtom* aAttribute,
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nsTArray<nscoord>& aSpacingArray,
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nsIFrame* aFrame, nscoord aDefaultValue0,
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nscoord aDefaultValue1,
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float aFontSizeInflation) {
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nsPresContext* presContext = aFrame->PresContext();
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ComputedStyle* computedStyle = aFrame->Style();
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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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int32_t elementNum = 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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const nsAString& str = Substring(aString, startIndex, count);
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nsAutoString valueString;
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valueString.Assign(str);
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nscoord newValue;
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if (aAttribute == nsGkAtoms::framespacing_ && elementNum) {
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newValue = aDefaultValue1;
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} else {
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newValue = aDefaultValue0;
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}
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nsMathMLFrame::ParseNumericValue(
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valueString, &newValue, nsMathMLElement::PARSE_ALLOW_UNITLESS,
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presContext, computedStyle, aFontSizeInflation);
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aSpacingArray.AppendElement(newValue);
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startIndex += count;
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count = 0;
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elementNum++;
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}
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}
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}
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static void ParseSpacingAttribute(nsMathMLmtableFrame* aFrame,
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nsAtom* aAttribute) {
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NS_ASSERTION(aAttribute == nsGkAtoms::rowspacing_ ||
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aAttribute == nsGkAtoms::columnspacing_ ||
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aAttribute == nsGkAtoms::framespacing_,
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"Non spacing attribute passed");
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nsAutoString attrValue;
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Element* frameElement = aFrame->GetContent()->AsElement();
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frameElement->GetAttr(kNameSpaceID_None, aAttribute, attrValue);
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if (nsGkAtoms::framespacing_ == aAttribute) {
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nsAutoString frame;
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frameElement->GetAttr(kNameSpaceID_None, nsGkAtoms::frame, frame);
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if (frame.IsEmpty() || frame.EqualsLiteral("none")) {
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aFrame->SetFrameSpacing(0, 0);
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return;
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}
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}
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nscoord value;
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nscoord value2;
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// Set defaults
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float fontSizeInflation = nsLayoutUtils::FontSizeInflationFor(aFrame);
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RefPtr<nsFontMetrics> fm =
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nsLayoutUtils::GetFontMetricsForFrame(aFrame, fontSizeInflation);
|
|
if (nsGkAtoms::rowspacing_ == aAttribute) {
|
|
value = kDefaultRowspacingEx * fm->XHeight();
|
|
value2 = 0;
|
|
} else if (nsGkAtoms::columnspacing_ == aAttribute) {
|
|
value = kDefaultColumnspacingEm * fm->EmHeight();
|
|
value2 = 0;
|
|
} else {
|
|
value = kDefaultFramespacingArg0Em * fm->EmHeight();
|
|
value2 = kDefaultFramespacingArg1Ex * fm->XHeight();
|
|
}
|
|
|
|
nsTArray<nscoord> valueList;
|
|
ExtractSpacingValues(attrValue, aAttribute, valueList, aFrame, value, value2,
|
|
fontSizeInflation);
|
|
if (valueList.Length() == 0) {
|
|
if (frameElement->HasAttr(kNameSpaceID_None, aAttribute)) {
|
|
ReportParseError(aFrame, aAttribute->GetUTF16String(), attrValue.get());
|
|
}
|
|
valueList.AppendElement(value);
|
|
}
|
|
if (aAttribute == nsGkAtoms::framespacing_) {
|
|
if (valueList.Length() == 1) {
|
|
if (frameElement->HasAttr(kNameSpaceID_None, aAttribute)) {
|
|
ReportParseError(aFrame, aAttribute->GetUTF16String(), attrValue.get());
|
|
}
|
|
valueList.AppendElement(value2);
|
|
} else if (valueList.Length() != 2) {
|
|
ReportParseError(aFrame, aAttribute->GetUTF16String(), attrValue.get());
|
|
}
|
|
}
|
|
|
|
if (aAttribute == nsGkAtoms::rowspacing_) {
|
|
aFrame->SetRowSpacingArray(valueList);
|
|
} else if (aAttribute == nsGkAtoms::columnspacing_) {
|
|
aFrame->SetColSpacingArray(valueList);
|
|
} else {
|
|
aFrame->SetFrameSpacing(valueList.ElementAt(0), valueList.ElementAt(1));
|
|
}
|
|
}
|
|
|
|
static void ParseSpacingAttributes(nsMathMLmtableFrame* aTableFrame) {
|
|
ParseSpacingAttribute(aTableFrame, nsGkAtoms::rowspacing_);
|
|
ParseSpacingAttribute(aTableFrame, nsGkAtoms::columnspacing_);
|
|
ParseSpacingAttribute(aTableFrame, nsGkAtoms::framespacing_);
|
|
aTableFrame->SetUseCSSSpacing();
|
|
}
|
|
|
|
// map all attributes within a table -- requires the indices of rows and cells.
|
|
// so it can only happen after they are made ready by the table base class.
|
|
static void MapAllAttributesIntoCSS(nsMathMLmtableFrame* aTableFrame) {
|
|
// Map mtable rowalign & rowlines.
|
|
ParseFrameAttribute(aTableFrame, nsGkAtoms::rowalign_, true);
|
|
ParseFrameAttribute(aTableFrame, nsGkAtoms::rowlines_, true);
|
|
|
|
// Map mtable columnalign & columnlines.
|
|
ParseFrameAttribute(aTableFrame, nsGkAtoms::columnalign_, true);
|
|
ParseFrameAttribute(aTableFrame, nsGkAtoms::columnlines_, true);
|
|
|
|
// Map mtable rowspacing, columnspacing & framespacing
|
|
ParseSpacingAttributes(aTableFrame);
|
|
|
|
// mtable is simple and only has one (pseudo) row-group
|
|
nsIFrame* rgFrame = aTableFrame->PrincipalChildList().FirstChild();
|
|
if (!rgFrame || !rgFrame->IsTableRowGroupFrame()) return;
|
|
|
|
for (nsIFrame* rowFrame : rgFrame->PrincipalChildList()) {
|
|
DEBUG_VERIFY_THAT_FRAME_IS(rowFrame, TableRow);
|
|
if (rowFrame->IsTableRowFrame()) {
|
|
// Map row rowalign.
|
|
ParseFrameAttribute(rowFrame, nsGkAtoms::rowalign_, false);
|
|
// Map row columnalign.
|
|
ParseFrameAttribute(rowFrame, nsGkAtoms::columnalign_, true);
|
|
|
|
for (nsIFrame* cellFrame : rowFrame->PrincipalChildList()) {
|
|
DEBUG_VERIFY_THAT_FRAME_IS(cellFrame, TableCell);
|
|
if (IsTableCell(cellFrame->Type())) {
|
|
// Map cell rowalign.
|
|
ParseFrameAttribute(cellFrame, nsGkAtoms::rowalign_, false);
|
|
// Map row columnalign.
|
|
ParseFrameAttribute(cellFrame, nsGkAtoms::columnalign_, false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// the align attribute of mtable can have a row number which indicates
|
|
// from where to anchor the table, e.g., top 5 means anchor the table at
|
|
// the top of the 5th row, axis -1 means anchor the table on the axis of
|
|
// the last row
|
|
|
|
// The REC says that the syntax is
|
|
// '\s*(top|bottom|center|baseline|axis)(\s+-?[0-9]+)?\s*'
|
|
// the parsing could have been simpler with that syntax
|
|
// but for backward compatibility we make optional
|
|
// the whitespaces between the alignment name and the row number
|
|
|
|
enum eAlign {
|
|
eAlign_top,
|
|
eAlign_bottom,
|
|
eAlign_center,
|
|
eAlign_baseline,
|
|
eAlign_axis
|
|
};
|
|
|
|
static void ParseAlignAttribute(nsString& aValue, eAlign& aAlign,
|
|
int32_t& aRowIndex) {
|
|
// by default, the table is centered about the axis
|
|
aRowIndex = 0;
|
|
aAlign = eAlign_axis;
|
|
int32_t len = 0;
|
|
|
|
// we only have to remove the leading spaces because
|
|
// ToInteger ignores the whitespaces around the number
|
|
aValue.CompressWhitespace(true, false);
|
|
|
|
if (0 == aValue.Find("top")) {
|
|
len = 3; // 3 is the length of 'top'
|
|
aAlign = eAlign_top;
|
|
} else if (0 == aValue.Find("bottom")) {
|
|
len = 6; // 6 is the length of 'bottom'
|
|
aAlign = eAlign_bottom;
|
|
} else if (0 == aValue.Find("center")) {
|
|
len = 6; // 6 is the length of 'center'
|
|
aAlign = eAlign_center;
|
|
} else if (0 == aValue.Find("baseline")) {
|
|
len = 8; // 8 is the length of 'baseline'
|
|
aAlign = eAlign_baseline;
|
|
} else if (0 == aValue.Find("axis")) {
|
|
len = 4; // 4 is the length of 'axis'
|
|
aAlign = eAlign_axis;
|
|
}
|
|
if (len) {
|
|
nsresult error;
|
|
aValue.Cut(0, len); // aValue is not a const here
|
|
aRowIndex = aValue.ToInteger(&error);
|
|
if (NS_FAILED(error)) aRowIndex = 0;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_rbs_off
|
|
// call ListMathMLTree(mParent) to get the big picture
|
|
static void ListMathMLTree(nsIFrame* atLeast) {
|
|
// climb up to <math> or <body> if <math> isn't there
|
|
nsIFrame* f = atLeast;
|
|
for (; f; f = f->GetParent()) {
|
|
nsIContent* c = f->GetContent();
|
|
if (!c || c->IsMathMLElement(nsGkAtoms::math) ||
|
|
// XXXbaku which kind of body tag?
|
|
c->NodeInfo()->NameAtom(nsGkAtoms::body))
|
|
break;
|
|
}
|
|
if (!f) f = atLeast;
|
|
f->List(stdout, 0);
|
|
}
|
|
#endif
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtableWrapperFrame
|
|
|
|
NS_QUERYFRAME_HEAD(nsMathMLmtableWrapperFrame)
|
|
NS_QUERYFRAME_ENTRY(nsIMathMLFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(nsTableWrapperFrame)
|
|
|
|
nsContainerFrame* NS_NewMathMLmtableOuterFrame(nsIPresShell* aPresShell,
|
|
ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
nsMathMLmtableWrapperFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtableWrapperFrame)
|
|
|
|
nsMathMLmtableWrapperFrame::~nsMathMLmtableWrapperFrame() {}
|
|
|
|
nsresult nsMathMLmtableWrapperFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) {
|
|
// Attributes specific to <mtable>:
|
|
// frame : in mathml.css
|
|
// framespacing : here
|
|
// groupalign : not yet supported
|
|
// equalrows : not yet supported
|
|
// equalcolumns : not yet supported
|
|
// displaystyle : here and in mathml.css
|
|
// align : in reflow
|
|
// rowalign : here
|
|
// rowlines : here
|
|
// rowspacing : here
|
|
// columnalign : here
|
|
// columnlines : here
|
|
// columnspacing : here
|
|
|
|
// mtable is simple and only has one (pseudo) row-group inside our inner-table
|
|
nsIFrame* tableFrame = mFrames.FirstChild();
|
|
NS_ASSERTION(tableFrame && tableFrame->IsTableFrame(),
|
|
"should always have an inner table frame");
|
|
nsIFrame* rgFrame = tableFrame->PrincipalChildList().FirstChild();
|
|
if (!rgFrame || !rgFrame->IsTableRowGroupFrame()) return NS_OK;
|
|
|
|
// align - just need to issue a dirty (resize) reflow command
|
|
if (aAttribute == nsGkAtoms::align) {
|
|
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(GetParent());
|
|
// Need to reflow the parent, not us, because this can actually
|
|
// affect siblings.
|
|
PresShell()->FrameNeedsReflow(GetParent(), nsIPresShell::eStyleChange,
|
|
NS_FRAME_IS_DIRTY);
|
|
return NS_OK;
|
|
}
|
|
|
|
// ...and the other attributes affect rows or columns in one way or another
|
|
|
|
nsPresContext* presContext = tableFrame->PresContext();
|
|
if (aAttribute == nsGkAtoms::rowspacing_ ||
|
|
aAttribute == nsGkAtoms::columnspacing_ ||
|
|
aAttribute == nsGkAtoms::framespacing_) {
|
|
nsMathMLmtableFrame* mathMLmtableFrame = do_QueryFrame(tableFrame);
|
|
if (mathMLmtableFrame) {
|
|
ParseSpacingAttribute(mathMLmtableFrame, aAttribute);
|
|
mathMLmtableFrame->SetUseCSSSpacing();
|
|
}
|
|
} else if (aAttribute == nsGkAtoms::rowalign_ ||
|
|
aAttribute == nsGkAtoms::rowlines_ ||
|
|
aAttribute == nsGkAtoms::columnalign_ ||
|
|
aAttribute == nsGkAtoms::columnlines_) {
|
|
// clear any cached property list for this table
|
|
tableFrame->DeleteProperty(AttributeToProperty(aAttribute));
|
|
// Reparse the new attribute on the table.
|
|
ParseFrameAttribute(tableFrame, aAttribute, true);
|
|
} else {
|
|
// Ignore attributes that do not affect layout.
|
|
return NS_OK;
|
|
}
|
|
|
|
// 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* nsMathMLmtableWrapperFrame::GetRowFrameAt(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->IsTableFrame(),
|
|
"should always have an inner table frame");
|
|
nsIFrame* rgFrame = tableFrame->PrincipalChildList().FirstChild();
|
|
if (!rgFrame || !rgFrame->IsTableRowGroupFrame()) return nullptr;
|
|
for (nsIFrame* rowFrame : rgFrame->PrincipalChildList()) {
|
|
if (aRowIndex == 0) {
|
|
DEBUG_VERIFY_THAT_FRAME_IS(rowFrame, TableRow);
|
|
if (!rowFrame->IsTableRowFrame()) return nullptr;
|
|
|
|
return rowFrame;
|
|
}
|
|
--aRowIndex;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void nsMathMLmtableWrapperFrame::Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus) {
|
|
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
|
|
|
|
nsAutoString value;
|
|
// we want to return a table that is anchored according to the align attribute
|
|
|
|
nsTableWrapperFrame::Reflow(aPresContext, aDesiredSize, aReflowInput,
|
|
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->AsElement()->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;
|
|
WritingMode wm = aDesiredSize.GetWritingMode();
|
|
nscoord blockSize = aDesiredSize.BSize(wm);
|
|
nsIFrame* rowFrame = nullptr;
|
|
if (rowIndex) {
|
|
rowFrame = GetRowFrameAt(rowIndex);
|
|
if (rowFrame) {
|
|
// translate the coordinates to be relative to us and in our writing mode
|
|
nsIFrame* frame = rowFrame;
|
|
LogicalRect rect(wm, frame->GetRect(),
|
|
aReflowInput.ComputedSizeAsContainerIfConstrained());
|
|
blockSize = rect.BSize(wm);
|
|
do {
|
|
nsIFrame* parent = frame->GetParent();
|
|
dy += frame->BStart(wm, parent->GetSize());
|
|
frame = parent;
|
|
} while (frame != this);
|
|
}
|
|
}
|
|
switch (tableAlign) {
|
|
case eAlign_top:
|
|
aDesiredSize.SetBlockStartAscent(dy);
|
|
break;
|
|
case eAlign_bottom:
|
|
aDesiredSize.SetBlockStartAscent(dy + blockSize);
|
|
break;
|
|
case eAlign_center:
|
|
aDesiredSize.SetBlockStartAscent(dy + blockSize / 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.SetBlockStartAscent(dy + rowAscent);
|
|
break;
|
|
}
|
|
}
|
|
// in other situations, fallback to center
|
|
aDesiredSize.SetBlockStartAscent(dy + blockSize / 2);
|
|
break;
|
|
case eAlign_axis:
|
|
default: {
|
|
// XXX should instead use style data from the row of reference here ?
|
|
RefPtr<nsFontMetrics> fm =
|
|
nsLayoutUtils::GetInflatedFontMetricsForFrame(this);
|
|
nscoord axisHeight;
|
|
GetAxisHeight(aReflowInput.mRenderingContext->GetDrawTarget(), fm,
|
|
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.SetBlockStartAscent(dy + rowAscent);
|
|
break;
|
|
}
|
|
}
|
|
// in other situations, fallback to using half of the height
|
|
aDesiredSize.SetBlockStartAscent(dy + blockSize / 2 + axisHeight);
|
|
}
|
|
}
|
|
|
|
mReference.x = 0;
|
|
mReference.y = aDesiredSize.BlockStartAscent();
|
|
|
|
// just make-up a bounding metrics
|
|
mBoundingMetrics = nsBoundingMetrics();
|
|
mBoundingMetrics.ascent = aDesiredSize.BlockStartAscent();
|
|
mBoundingMetrics.descent =
|
|
aDesiredSize.Height() - aDesiredSize.BlockStartAscent();
|
|
mBoundingMetrics.width = aDesiredSize.Width();
|
|
mBoundingMetrics.leftBearing = 0;
|
|
mBoundingMetrics.rightBearing = aDesiredSize.Width();
|
|
|
|
aDesiredSize.mBoundingMetrics = mBoundingMetrics;
|
|
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
|
|
}
|
|
|
|
nsContainerFrame* NS_NewMathMLmtableFrame(nsIPresShell* aPresShell,
|
|
ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
nsMathMLmtableFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtableFrame)
|
|
|
|
nsMathMLmtableFrame::~nsMathMLmtableFrame() {}
|
|
|
|
void nsMathMLmtableFrame::SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList) {
|
|
nsTableFrame::SetInitialChildList(aListID, aChildList);
|
|
MapAllAttributesIntoCSS(this);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
nscoord nsMathMLmtableFrame::GetColSpacing(int32_t aColIndex) {
|
|
if (mUseCSSSpacing) {
|
|
return nsTableFrame::GetColSpacing(aColIndex);
|
|
}
|
|
if (!mColSpacing.Length()) {
|
|
NS_ERROR("mColSpacing should not be empty");
|
|
return 0;
|
|
}
|
|
if (aColIndex < 0 || aColIndex >= GetColCount()) {
|
|
NS_ASSERTION(aColIndex == -1 || aColIndex == GetColCount(),
|
|
"Desired column beyond bounds of table and border");
|
|
return mFrameSpacingX;
|
|
}
|
|
if ((uint32_t)aColIndex >= mColSpacing.Length()) {
|
|
return mColSpacing.LastElement();
|
|
}
|
|
return mColSpacing.ElementAt(aColIndex);
|
|
}
|
|
|
|
nscoord nsMathMLmtableFrame::GetColSpacing(int32_t aStartColIndex,
|
|
int32_t aEndColIndex) {
|
|
if (mUseCSSSpacing) {
|
|
return nsTableFrame::GetColSpacing(aStartColIndex, aEndColIndex);
|
|
}
|
|
if (aStartColIndex == aEndColIndex) {
|
|
return 0;
|
|
}
|
|
if (!mColSpacing.Length()) {
|
|
NS_ERROR("mColSpacing should not be empty");
|
|
return 0;
|
|
}
|
|
nscoord space = 0;
|
|
if (aStartColIndex < 0) {
|
|
NS_ASSERTION(aStartColIndex == -1,
|
|
"Desired column beyond bounds of table and border");
|
|
space += mFrameSpacingX;
|
|
aStartColIndex = 0;
|
|
}
|
|
if (aEndColIndex >= GetColCount()) {
|
|
NS_ASSERTION(aEndColIndex == GetColCount(),
|
|
"Desired column beyond bounds of table and border");
|
|
space += mFrameSpacingX;
|
|
aEndColIndex = GetColCount();
|
|
}
|
|
// Only iterate over column spacing when there is the potential to vary
|
|
int32_t min = std::min(aEndColIndex, (int32_t)mColSpacing.Length());
|
|
for (int32_t i = aStartColIndex; i < min; i++) {
|
|
space += mColSpacing.ElementAt(i);
|
|
}
|
|
// The remaining values are constant. Note that if there are more
|
|
// column spacings specified than there are columns, LastElement() will be
|
|
// multiplied by 0, so it is still safe to use.
|
|
space += (aEndColIndex - min) * mColSpacing.LastElement();
|
|
return space;
|
|
}
|
|
|
|
nscoord nsMathMLmtableFrame::GetRowSpacing(int32_t aRowIndex) {
|
|
if (mUseCSSSpacing) {
|
|
return nsTableFrame::GetRowSpacing(aRowIndex);
|
|
}
|
|
if (!mRowSpacing.Length()) {
|
|
NS_ERROR("mRowSpacing should not be empty");
|
|
return 0;
|
|
}
|
|
if (aRowIndex < 0 || aRowIndex >= GetRowCount()) {
|
|
NS_ASSERTION(aRowIndex == -1 || aRowIndex == GetRowCount(),
|
|
"Desired row beyond bounds of table and border");
|
|
return mFrameSpacingY;
|
|
}
|
|
if ((uint32_t)aRowIndex >= mRowSpacing.Length()) {
|
|
return mRowSpacing.LastElement();
|
|
}
|
|
return mRowSpacing.ElementAt(aRowIndex);
|
|
}
|
|
|
|
nscoord nsMathMLmtableFrame::GetRowSpacing(int32_t aStartRowIndex,
|
|
int32_t aEndRowIndex) {
|
|
if (mUseCSSSpacing) {
|
|
return nsTableFrame::GetRowSpacing(aStartRowIndex, aEndRowIndex);
|
|
}
|
|
if (aStartRowIndex == aEndRowIndex) {
|
|
return 0;
|
|
}
|
|
if (!mRowSpacing.Length()) {
|
|
NS_ERROR("mRowSpacing should not be empty");
|
|
return 0;
|
|
}
|
|
nscoord space = 0;
|
|
if (aStartRowIndex < 0) {
|
|
NS_ASSERTION(aStartRowIndex == -1,
|
|
"Desired row beyond bounds of table and border");
|
|
space += mFrameSpacingY;
|
|
aStartRowIndex = 0;
|
|
}
|
|
if (aEndRowIndex >= GetRowCount()) {
|
|
NS_ASSERTION(aEndRowIndex == GetRowCount(),
|
|
"Desired row beyond bounds of table and border");
|
|
space += mFrameSpacingY;
|
|
aEndRowIndex = GetRowCount();
|
|
}
|
|
// Only iterate over row spacing when there is the potential to vary
|
|
int32_t min = std::min(aEndRowIndex, (int32_t)mRowSpacing.Length());
|
|
for (int32_t i = aStartRowIndex; i < min; i++) {
|
|
space += mRowSpacing.ElementAt(i);
|
|
}
|
|
// The remaining values are constant. Note that if there are more
|
|
// row spacings specified than there are row, LastElement() will be
|
|
// multiplied by 0, so it is still safe to use.
|
|
space += (aEndRowIndex - min) * mRowSpacing.LastElement();
|
|
return space;
|
|
}
|
|
|
|
void nsMathMLmtableFrame::SetUseCSSSpacing() {
|
|
mUseCSSSpacing = !(mContent->AsElement()->HasAttr(kNameSpaceID_None,
|
|
nsGkAtoms::rowspacing_) ||
|
|
mContent->AsElement()->HasAttr(
|
|
kNameSpaceID_None, nsGkAtoms::columnspacing_) ||
|
|
mContent->AsElement()->HasAttr(kNameSpaceID_None,
|
|
nsGkAtoms::framespacing_));
|
|
}
|
|
|
|
NS_QUERYFRAME_HEAD(nsMathMLmtableFrame)
|
|
NS_QUERYFRAME_ENTRY(nsMathMLmtableFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(nsTableFrame)
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtrFrame
|
|
|
|
nsContainerFrame* NS_NewMathMLmtrFrame(nsIPresShell* aPresShell,
|
|
ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
nsMathMLmtrFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtrFrame)
|
|
|
|
nsMathMLmtrFrame::~nsMathMLmtrFrame() {}
|
|
|
|
nsresult nsMathMLmtrFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* 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;
|
|
}
|
|
|
|
DeleteProperty(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
|
|
|
|
nsContainerFrame* NS_NewMathMLmtdFrame(nsIPresShell* aPresShell,
|
|
ComputedStyle* aStyle,
|
|
nsTableFrame* aTableFrame) {
|
|
return new (aPresShell) nsMathMLmtdFrame(aStyle, aTableFrame);
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtdFrame)
|
|
|
|
nsMathMLmtdFrame::~nsMathMLmtdFrame() {}
|
|
|
|
void nsMathMLmtdFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) {
|
|
nsTableCellFrame::Init(aContent, aParent, aPrevInFlow);
|
|
|
|
// We want to use the ancestor <math> element's font inflation to avoid
|
|
// individual cells having their own varying font inflation.
|
|
RemoveStateBits(NS_FRAME_FONT_INFLATION_FLOW_ROOT);
|
|
}
|
|
|
|
nsresult nsMathMLmtdFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* 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_) {
|
|
DeleteProperty(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) {
|
|
uint32_t rowIndex = RowIndex();
|
|
|
|
// If the row number is greater than the number of provided rowalign values,
|
|
// we simply repeat the last value.
|
|
if (rowIndex < 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()->AppendToTop(
|
|
MakeDisplayItem<nsDisplaymtdBorder>(aBuilder, this));
|
|
return NS_OK;
|
|
}
|
|
|
|
LogicalMargin nsMathMLmtdFrame::GetBorderWidth(WritingMode aWM) const {
|
|
nsStyleBorder styleBorder = *StyleBorder();
|
|
ApplyBorderToStyle(this, styleBorder);
|
|
return LogicalMargin(aWM, styleBorder.GetComputedBorder());
|
|
}
|
|
|
|
nsMargin nsMathMLmtdFrame::GetBorderOverflow() {
|
|
nsStyleBorder styleBorder = *StyleBorder();
|
|
ApplyBorderToStyle(this, styleBorder);
|
|
nsMargin overflow = ComputeBorderOverflow(this, styleBorder);
|
|
return overflow;
|
|
}
|
|
|
|
// --------
|
|
// implementation of nsMathMLmtdInnerFrame
|
|
|
|
NS_QUERYFRAME_HEAD(nsMathMLmtdInnerFrame)
|
|
NS_QUERYFRAME_ENTRY(nsIMathMLFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
|
|
|
|
nsContainerFrame* NS_NewMathMLmtdInnerFrame(nsIPresShell* aPresShell,
|
|
ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
nsMathMLmtdInnerFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtdInnerFrame)
|
|
|
|
nsMathMLmtdInnerFrame::nsMathMLmtdInnerFrame(ComputedStyle* aStyle,
|
|
nsPresContext* aPresContext)
|
|
: nsBlockFrame(aStyle, aPresContext, kClassID)
|
|
// Make a copy of the parent nsStyleText for later modification.
|
|
,
|
|
mUniqueStyleText(MakeUnique<nsStyleText>(*StyleText())) {}
|
|
|
|
void nsMathMLmtdInnerFrame::Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus) {
|
|
// Let the base class do the reflow
|
|
nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowInput, 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();
|
|
uint32_t columnIndex = cellFrame->ColIndex();
|
|
|
|
// If the column number is greater than the number of provided columalign
|
|
// values, we simply repeat the last value.
|
|
if (columnIndex < alignmentList->Length())
|
|
alignment = alignmentList->ElementAt(columnIndex);
|
|
else
|
|
alignment = alignmentList->ElementAt(alignmentList->Length() - 1);
|
|
}
|
|
|
|
mUniqueStyleText->mTextAlign = alignment;
|
|
return mUniqueStyleText.get();
|
|
}
|
|
|
|
/* virtual */ void nsMathMLmtdInnerFrame::DidSetComputedStyle(
|
|
ComputedStyle* aOldComputedStyle) {
|
|
nsBlockFrame::DidSetComputedStyle(aOldComputedStyle);
|
|
mUniqueStyleText = MakeUnique<nsStyleText>(*StyleText());
|
|
}
|