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-rw-r--r--layout/mathml/nsMathMLmtableFrame.cpp1363
1 files changed, 1363 insertions, 0 deletions
diff --git a/layout/mathml/nsMathMLmtableFrame.cpp b/layout/mathml/nsMathMLmtableFrame.cpp
new file mode 100644
index 000000000..a706fb483
--- /dev/null
+++ b/layout/mathml/nsMathMLmtableFrame.cpp
@@ -0,0 +1,1363 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsMathMLmtableFrame.h"
+#include "nsPresContext.h"
+#include "nsStyleContext.h"
+#include "nsStyleConsts.h"
+#include "nsNameSpaceManager.h"
+#include "nsRenderingContext.h"
+#include "nsCSSRendering.h"
+#include "nsMathMLElement.h"
+
+#include "nsTArray.h"
+#include "nsTableFrame.h"
+#include "celldata.h"
+
+#include "mozilla/RestyleManagerHandle.h"
+#include "mozilla/RestyleManagerHandleInlines.h"
+#include <algorithm>
+
+#include "nsIScriptError.h"
+#include "nsContentUtils.h"
+
+using namespace mozilla;
+using namespace mozilla::image;
+
+//
+// <mtable> -- table or matrix - implementation
+//
+
+static int8_t
+ParseStyleValue(nsIAtom* aAttribute, const nsAString& aAttributeValue)
+{
+ if (aAttribute == nsGkAtoms::rowalign_) {
+ if (aAttributeValue.EqualsLiteral("top"))
+ return NS_STYLE_VERTICAL_ALIGN_TOP;
+ else if (aAttributeValue.EqualsLiteral("bottom"))
+ return NS_STYLE_VERTICAL_ALIGN_BOTTOM;
+ else if (aAttributeValue.EqualsLiteral("center"))
+ return NS_STYLE_VERTICAL_ALIGN_MIDDLE;
+ else
+ return NS_STYLE_VERTICAL_ALIGN_BASELINE;
+ } else if (aAttribute == nsGkAtoms::columnalign_) {
+ if (aAttributeValue.EqualsLiteral("left"))
+ return NS_STYLE_TEXT_ALIGN_LEFT;
+ else if (aAttributeValue.EqualsLiteral("right"))
+ return NS_STYLE_TEXT_ALIGN_RIGHT;
+ else
+ return NS_STYLE_TEXT_ALIGN_CENTER;
+ } else if (aAttribute == nsGkAtoms::rowlines_ ||
+ aAttribute == nsGkAtoms::columnlines_) {
+ if (aAttributeValue.EqualsLiteral("solid"))
+ return NS_STYLE_BORDER_STYLE_SOLID;
+ else if (aAttributeValue.EqualsLiteral("dashed"))
+ return NS_STYLE_BORDER_STYLE_DASHED;
+ else
+ return NS_STYLE_BORDER_STYLE_NONE;
+ } else {
+ MOZ_CRASH("Unrecognized attribute.");
+ }
+
+ return -1;
+}
+
+static nsTArray<int8_t>*
+ExtractStyleValues(const nsAString& aString,
+ nsIAtom* aAttribute,
+ bool aAllowMultiValues)
+{
+ nsTArray<int8_t>* styleArray = nullptr;
+
+ const char16_t* start = aString.BeginReading();
+ const char16_t* end = aString.EndReading();
+
+ int32_t startIndex = 0;
+ int32_t count = 0;
+
+ while (start < end) {
+ // Skip leading spaces.
+ while ((start < end) && nsCRT::IsAsciiSpace(*start)) {
+ start++;
+ startIndex++;
+ }
+
+ // Look for the end of the string, or another space.
+ while ((start < end) && !nsCRT::IsAsciiSpace(*start)) {
+ start++;
+ count++;
+ }
+
+ // Grab the value found and process it.
+ if (count > 0) {
+ if (!styleArray)
+ styleArray = new nsTArray<int8_t>();
+
+ // We want to return a null array if an attribute gives multiple values,
+ // but multiple values aren't allowed.
+ if (styleArray->Length() > 1 && !aAllowMultiValues) {
+ delete styleArray;
+ return nullptr;
+ }
+
+ nsDependentSubstring valueString(aString, startIndex, count);
+ int8_t styleValue = ParseStyleValue(aAttribute, valueString);
+ styleArray->AppendElement(styleValue);
+
+ startIndex += count;
+ count = 0;
+ }
+ }
+ return styleArray;
+}
+
+static nsresult
+ReportParseError(nsIFrame* aFrame,
+ const char16_t* aAttribute,
+ const char16_t* aValue)
+{
+ nsIContent* content = aFrame->GetContent();
+
+ const char16_t* params[] =
+ { aValue, aAttribute, content->NodeInfo()->NameAtom()->GetUTF16String() };
+
+ return nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
+ NS_LITERAL_CSTRING("Layout: MathML"),
+ content->OwnerDoc(),
+ nsContentUtils::eMATHML_PROPERTIES,
+ "AttributeParsingError", params, 3);
+}
+
+// Each rowalign='top bottom' or columnalign='left right center' (from
+// <mtable> or <mtr>) is split once into an nsTArray<int8_t> which is
+// stored in the property table. Row/Cell frames query the property table
+// to see what values apply to them.
+
+NS_DECLARE_FRAME_PROPERTY_DELETABLE(RowAlignProperty, nsTArray<int8_t>)
+NS_DECLARE_FRAME_PROPERTY_DELETABLE(RowLinesProperty, nsTArray<int8_t>)
+NS_DECLARE_FRAME_PROPERTY_DELETABLE(ColumnAlignProperty, nsTArray<int8_t>)
+NS_DECLARE_FRAME_PROPERTY_DELETABLE(ColumnLinesProperty, nsTArray<int8_t>)
+
+static const FramePropertyDescriptor<nsTArray<int8_t>>*
+AttributeToProperty(nsIAtom* aAttribute)
+{
+ if (aAttribute == nsGkAtoms::rowalign_)
+ return RowAlignProperty();
+ if (aAttribute == nsGkAtoms::rowlines_)
+ return RowLinesProperty();
+ if (aAttribute == nsGkAtoms::columnalign_)
+ return ColumnAlignProperty();
+ NS_ASSERTION(aAttribute == nsGkAtoms::columnlines_, "Invalid attribute");
+ return ColumnLinesProperty();
+}
+
+/* This method looks for a property that applies to a cell, but it looks
+ * recursively because some cell properties can come from the cell, a row,
+ * a table, etc. This function searches through the hierarchy for a property
+ * and returns its value. The function stops searching after checking a <mtable>
+ * frame.
+ */
+static nsTArray<int8_t>*
+FindCellProperty(const nsIFrame* aCellFrame,
+ const FramePropertyDescriptor<nsTArray<int8_t>>* aFrameProperty)
+{
+ const nsIFrame* currentFrame = aCellFrame;
+ nsTArray<int8_t>* propertyData = nullptr;
+
+ while (currentFrame) {
+ FrameProperties props = currentFrame->Properties();
+ propertyData = props.Get(aFrameProperty);
+ bool frameIsTable = (currentFrame->GetType() == nsGkAtoms::tableFrame);
+
+ if (propertyData || frameIsTable)
+ currentFrame = nullptr; // A null frame pointer exits the loop
+ else
+ currentFrame = currentFrame->GetParent(); // Go to the parent frame
+ }
+
+ return propertyData;
+}
+
+static void
+ApplyBorderToStyle(const nsMathMLmtdFrame* aFrame,
+ nsStyleBorder& aStyleBorder)
+{
+ int32_t rowIndex;
+ int32_t columnIndex;
+ aFrame->GetRowIndex(rowIndex);
+ aFrame->GetColIndex(columnIndex);
+
+ nscoord borderWidth =
+ aFrame->PresContext()->GetBorderWidthTable()[NS_STYLE_BORDER_WIDTH_THIN];
+
+ nsTArray<int8_t>* rowLinesList =
+ FindCellProperty(aFrame, RowLinesProperty());
+
+ nsTArray<int8_t>* columnLinesList =
+ FindCellProperty(aFrame, ColumnLinesProperty());
+
+ // We don't place a row line on top of the first row
+ if (rowIndex > 0 && rowLinesList) {
+ // If the row number is greater than the number of provided rowline
+ // values, we simply repeat the last value.
+ int32_t listLength = rowLinesList->Length();
+ if (rowIndex < listLength) {
+ aStyleBorder.SetBorderStyle(NS_SIDE_TOP,
+ rowLinesList->ElementAt(rowIndex - 1));
+ } else {
+ aStyleBorder.SetBorderStyle(NS_SIDE_TOP,
+ rowLinesList->ElementAt(listLength - 1));
+ }
+ aStyleBorder.SetBorderWidth(NS_SIDE_TOP, borderWidth);
+ }
+
+ // We don't place a column line on the left of the first column.
+ if (columnIndex > 0 && columnLinesList) {
+ // If the column number is greater than the number of provided columline
+ // values, we simply repeat the last value.
+ int32_t listLength = columnLinesList->Length();
+ if (columnIndex < listLength) {
+ aStyleBorder.SetBorderStyle(NS_SIDE_LEFT,
+ columnLinesList->ElementAt(columnIndex - 1));
+ } else {
+ aStyleBorder.SetBorderStyle(NS_SIDE_LEFT,
+ columnLinesList->ElementAt(listLength - 1));
+ }
+ aStyleBorder.SetBorderWidth(NS_SIDE_LEFT, borderWidth);
+ }
+}
+
+static nsMargin
+ComputeBorderOverflow(nsMathMLmtdFrame* aFrame,
+ const nsStyleBorder& aStyleBorder)
+{
+ nsMargin overflow;
+ int32_t rowIndex;
+ int32_t columnIndex;
+ nsTableFrame* table = aFrame->GetTableFrame();
+ aFrame->GetCellIndexes(rowIndex, columnIndex);
+ if (!columnIndex) {
+ overflow.left = table->GetColSpacing(-1);
+ overflow.right = table->GetColSpacing(0) / 2;
+ } else if (columnIndex == table->GetColCount() - 1) {
+ overflow.left = table->GetColSpacing(columnIndex - 1) / 2;
+ overflow.right = table->GetColSpacing(columnIndex + 1);
+ } else {
+ overflow.left = table->GetColSpacing(columnIndex - 1) / 2;
+ overflow.right = table->GetColSpacing(columnIndex) / 2;
+ }
+ if (!rowIndex) {
+ overflow.top = table->GetRowSpacing(-1);
+ overflow.bottom = table->GetRowSpacing(0) / 2;
+ } else if (rowIndex == table->GetRowCount() - 1) {
+ overflow.top = table->GetRowSpacing(rowIndex - 1) / 2;
+ overflow.bottom = table->GetRowSpacing(rowIndex + 1);
+ } else {
+ overflow.top = table->GetRowSpacing(rowIndex - 1) / 2;
+ overflow.bottom = table->GetRowSpacing(rowIndex) / 2;
+ }
+ return overflow;
+}
+
+/*
+ * A variant of the nsDisplayBorder contains special code to render a border
+ * around a nsMathMLmtdFrame based on the rowline and columnline properties
+ * set on the cell frame.
+ */
+class nsDisplaymtdBorder : public nsDisplayBorder
+{
+public:
+ nsDisplaymtdBorder(nsDisplayListBuilder* aBuilder, nsMathMLmtdFrame* aFrame)
+ : nsDisplayBorder(aBuilder, aFrame)
+ {
+ }
+
+ nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder* aBuilder) override
+ {
+ return new nsDisplayItemGenericImageGeometry(this, aBuilder);
+ }
+
+ void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
+ const nsDisplayItemGeometry* aGeometry,
+ nsRegion* aInvalidRegion) override
+ {
+ auto geometry =
+ static_cast<const nsDisplayItemGenericImageGeometry*>(aGeometry);
+
+ if (aBuilder->ShouldSyncDecodeImages() &&
+ geometry->ShouldInvalidateToSyncDecodeImages()) {
+ bool snap;
+ aInvalidRegion->Or(*aInvalidRegion, GetBounds(aBuilder, &snap));
+ }
+
+ nsDisplayItem::ComputeInvalidationRegion(aBuilder, aGeometry, aInvalidRegion);
+ }
+
+ virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) override
+ {
+ *aSnap = true;
+ nsStyleBorder styleBorder = *mFrame->StyleBorder();
+ nsMathMLmtdFrame* frame = static_cast<nsMathMLmtdFrame*>(mFrame);
+ ApplyBorderToStyle(frame, styleBorder);
+ nsRect bounds = CalculateBounds(styleBorder);
+ nsMargin overflow = ComputeBorderOverflow(frame, styleBorder);
+ bounds.Inflate(overflow);
+ return bounds;
+ }
+
+ virtual void Paint(nsDisplayListBuilder* aBuilder, nsRenderingContext* aCtx) override
+ {
+ nsStyleBorder styleBorder = *mFrame->StyleBorder();
+ nsMathMLmtdFrame* frame = static_cast<nsMathMLmtdFrame*>(mFrame);
+ ApplyBorderToStyle(frame, styleBorder);
+
+ nsRect bounds = nsRect(ToReferenceFrame(), mFrame->GetSize());
+ nsMargin overflow = ComputeBorderOverflow(frame, styleBorder);
+ bounds.Inflate(overflow);
+
+ PaintBorderFlags flags = aBuilder->ShouldSyncDecodeImages()
+ ? PaintBorderFlags::SYNC_DECODE_IMAGES
+ : PaintBorderFlags();
+
+ DrawResult result =
+ nsCSSRendering::PaintBorderWithStyleBorder(mFrame->PresContext(), *aCtx,
+ mFrame, mVisibleRect,
+ bounds,
+ styleBorder,
+ mFrame->StyleContext(),
+ flags,
+ mFrame->GetSkipSides());
+
+ nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, result);
+ }
+};
+
+#ifdef DEBUG
+#define DEBUG_VERIFY_THAT_FRAME_IS(_frame, _expected) \
+ MOZ_ASSERT(mozilla::StyleDisplay::_expected == _frame->StyleDisplay()->mDisplay, \
+ "internal error");
+#else
+#define DEBUG_VERIFY_THAT_FRAME_IS(_frame, _expected)
+#endif
+
+static void
+ParseFrameAttribute(nsIFrame* aFrame,
+ nsIAtom* aAttribute,
+ bool aAllowMultiValues)
+{
+ nsAutoString attrValue;
+
+ nsIContent* frameContent = aFrame->GetContent();
+ frameContent->GetAttr(kNameSpaceID_None, aAttribute, attrValue);
+
+ if (!attrValue.IsEmpty()) {
+ nsTArray<int8_t>* valueList =
+ ExtractStyleValues(attrValue, aAttribute, aAllowMultiValues);
+
+ // If valueList is null, that indicates a problem with the attribute value.
+ // Only set properties on a valid attribute value.
+ if (valueList) {
+ // The code reading the property assumes that this list is nonempty.
+ NS_ASSERTION(valueList->Length() >= 1, "valueList should not be empty!");
+ FrameProperties props = aFrame->Properties();
+ props.Set(AttributeToProperty(aAttribute), valueList);
+ } else {
+ ReportParseError(aFrame, aAttribute->GetUTF16String(), attrValue.get());
+ }
+ }
+}
+
+// rowspacing
+//
+// Specifies the distance between successive rows in an mtable. Multiple
+// lengths can be specified, each corresponding to its respective position
+// between rows. For example:
+//
+// [ROW_0]
+// rowspace_0
+// [ROW_1]
+// rowspace_1
+// [ROW_2]
+//
+// If the number of row gaps exceeds the number of lengths specified, the final
+// specified length is repeated. Additional lengths are ignored.
+//
+// values: (length)+
+// default: 1.0ex
+//
+// Unitless values are permitted and provide a multiple of the default value
+// Negative values are forbidden.
+//
+
+// columnspacing
+//
+// Specifies the distance between successive columns in an mtable. Multiple
+// lengths can be specified, each corresponding to its respective position
+// between columns. For example:
+//
+// [COLUMN_0] columnspace_0 [COLUMN_1] columnspace_1 [COLUMN_2]
+//
+// If the number of column gaps exceeds the number of lengths specified, the
+// final specified length is repeated. Additional lengths are ignored.
+//
+// values: (length)+
+// default: 0.8em
+//
+// Unitless values are permitted and provide a multiple of the default value
+// Negative values are forbidden.
+//
+
+// framespacing
+//
+// Specifies the distance between the mtable and its frame (if any). The
+// first value specified provides the spacing between the left and right edge
+// of the table and the frame, the second value determines the spacing between
+// the top and bottom edges and the frame.
+//
+// An error is reported if only one length is passed. Any additional lengths
+// are ignored
+//
+// values: length length
+// default: 0em 0ex If frame attribute is "none" or not specified,
+// 0.4em 0.5ex otherwise
+//
+// Unitless values are permitted and provide a multiple of the default value
+// Negative values are forbidden.
+//
+
+static const float kDefaultRowspacingEx = 1.0f;
+static const float kDefaultColumnspacingEm = 0.8f;
+static const float kDefaultFramespacingArg0Em = 0.4f;
+static const float kDefaultFramespacingArg1Ex = 0.5f;
+
+static void
+ExtractSpacingValues(const nsAString& aString,
+ nsIAtom* aAttribute,
+ nsTArray<nscoord>& aSpacingArray,
+ nsIFrame* aFrame,
+ nscoord aDefaultValue0,
+ nscoord aDefaultValue1,
+ float aFontSizeInflation)
+{
+ nsPresContext* presContext = aFrame->PresContext();
+ nsStyleContext* styleContext = aFrame->StyleContext();
+
+ const char16_t* start = aString.BeginReading();
+ const char16_t* end = aString.EndReading();
+
+ int32_t startIndex = 0;
+ int32_t count = 0;
+ int32_t elementNum = 0;
+
+ while (start < end) {
+ // Skip leading spaces.
+ while ((start < end) && nsCRT::IsAsciiSpace(*start)) {
+ start++;
+ startIndex++;
+ }
+
+ // Look for the end of the string, or another space.
+ while ((start < end) && !nsCRT::IsAsciiSpace(*start)) {
+ start++;
+ count++;
+ }
+
+ // Grab the value found and process it.
+ if (count > 0) {
+ const nsAString& str = Substring(aString, startIndex, count);
+ nsAutoString valueString;
+ valueString.Assign(str);
+ nscoord newValue;
+ if (aAttribute == nsGkAtoms::framespacing_ && elementNum) {
+ newValue = aDefaultValue1;
+ } else {
+ newValue = aDefaultValue0;
+ }
+ nsMathMLFrame::ParseNumericValue(valueString, &newValue,
+ nsMathMLElement::PARSE_ALLOW_UNITLESS,
+ presContext, styleContext,
+ aFontSizeInflation);
+ aSpacingArray.AppendElement(newValue);
+
+ startIndex += count;
+ count = 0;
+ elementNum++;
+ }
+ }
+}
+
+static void
+ParseSpacingAttribute(nsMathMLmtableFrame* aFrame, nsIAtom* aAttribute)
+{
+ NS_ASSERTION(aAttribute == nsGkAtoms::rowspacing_ ||
+ aAttribute == nsGkAtoms::columnspacing_ ||
+ aAttribute == nsGkAtoms::framespacing_,
+ "Non spacing attribute passed");
+
+ nsAutoString attrValue;
+ nsIContent* frameContent = aFrame->GetContent();
+ frameContent->GetAttr(kNameSpaceID_None, aAttribute, attrValue);
+
+ if (nsGkAtoms::framespacing_ == aAttribute) {
+ nsAutoString frame;
+ frameContent->GetAttr(kNameSpaceID_None, nsGkAtoms::frame, frame);
+ if (frame.IsEmpty() || frame.EqualsLiteral("none")) {
+ aFrame->SetFrameSpacing(0, 0);
+ return;
+ }
+ }
+
+ nscoord value;
+ nscoord value2;
+ // Set defaults
+ float fontSizeInflation = nsLayoutUtils::FontSizeInflationFor(aFrame);
+ RefPtr<nsFontMetrics> fm =
+ 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 (frameContent->HasAttr(kNameSpaceID_None, aAttribute)) {
+ ReportParseError(aFrame, aAttribute->GetUTF16String(),
+ attrValue.get());
+ }
+ valueList.AppendElement(value);
+ }
+ if (aAttribute == nsGkAtoms::framespacing_) {
+ if (valueList.Length() == 1) {
+ if(frameContent->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->GetType() != nsGkAtoms::tableRowGroupFrame)
+ return;
+
+ for (nsIFrame* rowFrame : rgFrame->PrincipalChildList()) {
+ DEBUG_VERIFY_THAT_FRAME_IS(rowFrame, TableRow);
+ if (rowFrame->GetType() == nsGkAtoms::tableRowFrame) {
+ // 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 (IS_TABLE_CELL(cellFrame->GetType())) {
+ // 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) ||
+ c->NodeInfo()->NameAtom(nsGkAtoms::body)) // XXXbaku which kind of body tag?
+ 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, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsMathMLmtableWrapperFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmtableWrapperFrame)
+
+nsMathMLmtableWrapperFrame::~nsMathMLmtableWrapperFrame()
+{
+}
+
+nsresult
+nsMathMLmtableWrapperFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* 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->GetType() == nsGkAtoms::tableFrame,
+ "should always have an inner table frame");
+ nsIFrame* rgFrame = tableFrame->PrincipalChildList().FirstChild();
+ if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
+ return NS_OK;
+
+ // align - just need to issue a dirty (resize) reflow command
+ if (aAttribute == nsGkAtoms::align) {
+ PresContext()->PresShell()->
+ FrameNeedsReflow(this, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
+ return NS_OK;
+ }
+
+ // displaystyle - may seem innocuous, but it is actually very harsh --
+ // like changing an unit. Blow away and recompute all our automatic
+ // presentational data, and issue a style-changed reflow request
+ if (aAttribute == nsGkAtoms::displaystyle_) {
+ nsMathMLContainerFrame::RebuildAutomaticDataForChildren(GetParent());
+ // Need to reflow the parent, not us, because this can actually
+ // affect siblings.
+ PresContext()->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
+ presContext->PropertyTable()->
+ Delete(tableFrame, 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->GetType() == nsGkAtoms::tableFrame,
+ "should always have an inner table frame");
+ nsIFrame* rgFrame = tableFrame->PrincipalChildList().FirstChild();
+ if (!rgFrame || rgFrame->GetType() != nsGkAtoms::tableRowGroupFrame)
+ return nullptr;
+ for (nsIFrame* rowFrame : rgFrame->PrincipalChildList()) {
+ if (aRowIndex == 0) {
+ DEBUG_VERIFY_THAT_FRAME_IS(rowFrame, TableRow);
+ if (rowFrame->GetType() != nsGkAtoms::tableRowFrame)
+ return nullptr;
+
+ return rowFrame;
+ }
+ --aRowIndex;
+ }
+ }
+ return nullptr;
+}
+
+void
+nsMathMLmtableWrapperFrame::Reflow(nsPresContext* aPresContext,
+ ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus)
+{
+ 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->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 {
+ dy += rect.BStart(wm);
+ frame = frame->GetParent();
+ } 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, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsMathMLmtableFrame(aContext);
+}
+
+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->HasAttr(kNameSpaceID_None, nsGkAtoms::rowspacing_) ||
+ mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::columnspacing_) ||
+ mContent->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, 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
+
+nsContainerFrame*
+NS_NewMathMLmtdFrame(nsIPresShell* aPresShell,
+ nsStyleContext* aContext,
+ nsTableFrame* aTableFrame)
+{
+ return new (aPresShell) nsMathMLmtdFrame(aContext, 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);
+}
+
+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->IsMathMLElement(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->IsMathMLElement(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;
+}
+
+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, 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 modification.
+ mUniqueStyleText = new (PresContext()) nsStyleText(*StyleText());
+}
+
+nsMathMLmtdInnerFrame::~nsMathMLmtdInnerFrame()
+{
+ mUniqueStyleText->Destroy(PresContext());
+}
+
+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();
+ 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());
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 22:08:33 +0000