mirror of
https://github.com/ManchildProductions/UXP-Fixed.git
synced 2026-05-27 21:28:26 +00:00
win7-7
cbb61ab832
Part 1: Remove current table item, as it's never set. Part 2: Get rid of generic table painting code, and handle each class separately. Part 4: Hoist outline skipping into col(group) frame code. Part 5: Skip box-shadow for table column and column groups. Part 6: Store column and column group backgrounds separately, and then append them before the rest of the table contents. Part 7: Pass rects in display list coordinates to AppendBackgroundItemsToTop. Part 8: Create column and column group background display items as part of the cell's BuildDisplayList. Part 9: Used cached values instead of calling nsDisplayListBuilder::ToReferenceFrame when possible, since it can be expensive when the requested frame isn't the builder's current frame. Part 10: Make sure we build display items for table parts where only the normal position is visible, since we may need to create background items for ancestors at that position. Part 11: Create an AutoBuildingDisplayList when we create background items for table columns and column groups, so that we initialize the invalidation state correctly.
743 lines
24 KiB
C++
743 lines
24 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMathMLmfencedFrame.h"
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#include "nsRenderingContext.h"
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#include "nsMathMLChar.h"
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#include <algorithm>
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using namespace mozilla;
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//
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// <mfenced> -- surround content with a pair of fences
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//
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nsIFrame*
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NS_NewMathMLmfencedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsMathMLmfencedFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmfencedFrame)
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nsMathMLmfencedFrame::~nsMathMLmfencedFrame()
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{
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RemoveFencesAndSeparators();
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}
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NS_IMETHODIMP
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nsMathMLmfencedFrame::InheritAutomaticData(nsIFrame* aParent)
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{
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// let the base class get the default from our parent
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nsMathMLContainerFrame::InheritAutomaticData(aParent);
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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RemoveFencesAndSeparators();
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CreateFencesAndSeparators(PresContext());
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return NS_OK;
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}
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void
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nsMathMLmfencedFrame::SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList)
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{
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// First, let the base class do its work
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nsMathMLContainerFrame::SetInitialChildList(aListID, aChildList);
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// InheritAutomaticData will not get called if our parent is not a mathml
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// frame, so initialize NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY for
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// GetPreferredStretchSize() from Reflow().
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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// No need to track the style contexts given to our MathML chars.
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// The Style System will use Get/SetAdditionalStyleContext() to keep them
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// up-to-date if dynamic changes arise.
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CreateFencesAndSeparators(PresContext());
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}
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nsresult
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nsMathMLmfencedFrame::AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType)
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{
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RemoveFencesAndSeparators();
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CreateFencesAndSeparators(PresContext());
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return nsMathMLContainerFrame::
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AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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nsresult
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nsMathMLmfencedFrame::ChildListChanged(int32_t aModType)
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{
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RemoveFencesAndSeparators();
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CreateFencesAndSeparators(PresContext());
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return nsMathMLContainerFrame::ChildListChanged(aModType);
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}
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void
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nsMathMLmfencedFrame::RemoveFencesAndSeparators()
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{
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delete mOpenChar;
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delete mCloseChar;
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if (mSeparatorsChar) delete[] mSeparatorsChar;
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mOpenChar = nullptr;
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mCloseChar = nullptr;
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mSeparatorsChar = nullptr;
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mSeparatorsCount = 0;
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}
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void
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nsMathMLmfencedFrame::CreateFencesAndSeparators(nsPresContext* aPresContext)
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{
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nsAutoString value;
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//////////////
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// see if the opening fence is there ...
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if (!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::open, value)) {
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value = char16_t('('); // default as per the MathML REC
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} else {
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value.CompressWhitespace();
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}
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if (!value.IsEmpty()) {
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mOpenChar = new nsMathMLChar;
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mOpenChar->SetData(value);
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ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mOpenChar);
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}
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//////////////
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// see if the closing fence is there ...
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if(!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::close, value)) {
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value = char16_t(')'); // default as per the MathML REC
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} else {
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value.CompressWhitespace();
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}
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if (!value.IsEmpty()) {
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mCloseChar = new nsMathMLChar;
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mCloseChar->SetData(value);
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ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mCloseChar);
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}
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//////////////
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// see if separators are there ...
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if (!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::separators_, value)) {
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value = char16_t(','); // default as per the MathML REC
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} else {
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value.StripWhitespace();
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}
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mSeparatorsCount = value.Length();
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if (0 < mSeparatorsCount) {
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int32_t sepCount = mFrames.GetLength() - 1;
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if (0 < sepCount) {
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mSeparatorsChar = new nsMathMLChar[sepCount];
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nsAutoString sepChar;
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for (int32_t i = 0; i < sepCount; i++) {
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if (i < mSeparatorsCount) {
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sepChar = value[i];
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}
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else {
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sepChar = value[mSeparatorsCount-1];
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}
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mSeparatorsChar[i].SetData(sepChar);
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ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, &mSeparatorsChar[i]);
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}
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mSeparatorsCount = sepCount;
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} else {
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// No separators. Note that sepCount can be -1 here, so don't
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// set mSeparatorsCount to it.
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mSeparatorsCount = 0;
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}
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}
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}
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void
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nsMathMLmfencedFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists)
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{
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/////////////
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// display the content
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nsMathMLContainerFrame::BuildDisplayList(aBuilder, aLists);
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////////////
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// display fences and separators
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uint32_t count = 0;
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if (mOpenChar) {
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mOpenChar->Display(aBuilder, this, aLists, count++);
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}
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if (mCloseChar) {
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mCloseChar->Display(aBuilder, this, aLists, count++);
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}
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for (int32_t i = 0; i < mSeparatorsCount; i++) {
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mSeparatorsChar[i].Display(aBuilder, this, aLists, count++);
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}
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}
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/* @param aMetrics is an IN/OUT. Provide the current metrics for the mFenced
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frame and it will be enlarged as necessary.
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For simplicity the width of the container is always incremented by the width
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of the nsMathMLChar. As we only stretch fences and separators in the vertical
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direction, this has no impact on overall appearance.
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*/
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static void
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ApplyUnstretchedMetrics(nsPresContext* aPresContext,
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DrawTarget* aDrawTarget,
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float aFontSizeInflation,
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nsMathMLChar* aMathMLChar,
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nsBoundingMetrics& aMetrics,
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bool aIsRTL)
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{
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if (aMathMLChar && 0 < aMathMLChar->Length()) {
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nsBoundingMetrics charSize;
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aMathMLChar->Stretch(aPresContext, aDrawTarget, aFontSizeInflation,
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NS_STRETCH_DIRECTION_DEFAULT,
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aMetrics, // size is unimportant as we aren't stretching
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charSize, NS_STRETCH_NONE, aIsRTL);
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aMetrics += charSize;
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}
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}
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void
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nsMathMLmfencedFrame::Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus)
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{
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MarkInReflow();
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mPresentationData.flags &= ~NS_MATHML_ERROR;
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aDesiredSize.ClearSize();
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aDesiredSize.SetBlockStartAscent(0);
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aDesiredSize.mBoundingMetrics = nsBoundingMetrics();
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int32_t i;
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const nsStyleFont* font = StyleFont();
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float fontSizeInflation = nsLayoutUtils::FontSizeInflationFor(this);
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RefPtr<nsFontMetrics> fm =
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nsLayoutUtils::GetFontMetricsForFrame(this, fontSizeInflation);
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nscoord axisHeight, em;
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GetAxisHeight(aReflowInput.mRenderingContext->GetDrawTarget(), fm, axisHeight);
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GetEmHeight(fm, em);
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// leading to be left at the top and the bottom of stretched chars
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nscoord leading = NSToCoordRound(0.2f * em);
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/////////////
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// Reflow children
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// Asking each child to cache its bounding metrics
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// Note that we don't use the base method nsMathMLContainerFrame::Reflow()
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// because we want to stretch our fences, separators and stretchy frames using
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// the *same* initial aDesiredSize.mBoundingMetrics. If we were to use the base
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// method here, our stretchy frames will be stretched and placed, and we may
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// end up stretching our fences/separators with a different aDesiredSize.
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// XXX The above decision was revisited in bug 121748 and this code can be
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// refactored to use nsMathMLContainerFrame::Reflow() at some stage.
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nsReflowStatus childStatus;
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nsIFrame* firstChild = PrincipalChildList().FirstChild();
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nsIFrame* childFrame = firstChild;
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nscoord ascent = 0, descent = 0;
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if (firstChild || mOpenChar || mCloseChar || mSeparatorsCount > 0) {
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// We use the ASCII metrics to get our minimum height. This way,
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// if we have borders or a background, they will fit better with
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// other elements on the line.
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ascent = fm->MaxAscent();
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descent = fm->MaxDescent();
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}
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while (childFrame) {
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ReflowOutput childDesiredSize(aReflowInput,
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aDesiredSize.mFlags
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| NS_REFLOW_CALC_BOUNDING_METRICS);
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WritingMode wm = childFrame->GetWritingMode();
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LogicalSize availSize = aReflowInput.ComputedSize(wm);
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availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
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ReflowInput childReflowInput(aPresContext, aReflowInput,
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childFrame, availSize);
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ReflowChild(childFrame, aPresContext, childDesiredSize,
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childReflowInput, childStatus);
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//NS_ASSERTION(NS_FRAME_IS_COMPLETE(childStatus), "bad status");
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SaveReflowAndBoundingMetricsFor(childFrame, childDesiredSize,
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childDesiredSize.mBoundingMetrics);
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mozilla::WritingMode outerWM = aReflowInput.GetWritingMode();
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nscoord childDescent = childDesiredSize.BSize(outerWM) -
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childDesiredSize.BlockStartAscent();
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if (descent < childDescent)
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descent = childDescent;
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if (ascent < childDesiredSize.BlockStartAscent())
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ascent = childDesiredSize.BlockStartAscent();
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childFrame = childFrame->GetNextSibling();
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}
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/////////////
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// Ask stretchy children to stretch themselves
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nsBoundingMetrics containerSize;
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nsStretchDirection stretchDir = NS_STRETCH_DIRECTION_VERTICAL;
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DrawTarget* drawTarget = aReflowInput.mRenderingContext->GetDrawTarget();
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GetPreferredStretchSize(drawTarget,
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0, /* i.e., without embellishments */
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stretchDir, containerSize);
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childFrame = firstChild;
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while (childFrame) {
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nsIMathMLFrame* mathmlChild = do_QueryFrame(childFrame);
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if (mathmlChild) {
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ReflowOutput childDesiredSize(aReflowInput);
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// retrieve the metrics that was stored at the previous pass
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GetReflowAndBoundingMetricsFor(childFrame, childDesiredSize,
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childDesiredSize.mBoundingMetrics);
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mathmlChild->Stretch(drawTarget,
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stretchDir, containerSize, childDesiredSize);
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// store the updated metrics
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SaveReflowAndBoundingMetricsFor(childFrame, childDesiredSize,
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childDesiredSize.mBoundingMetrics);
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nscoord childDescent = childDesiredSize.Height() - childDesiredSize.BlockStartAscent();
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if (descent < childDescent)
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descent = childDescent;
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if (ascent < childDesiredSize.BlockStartAscent())
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ascent = childDesiredSize.BlockStartAscent();
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}
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childFrame = childFrame->GetNextSibling();
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}
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// bug 121748: for surrounding fences & separators, use a size that covers everything
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GetPreferredStretchSize(drawTarget, STRETCH_CONSIDER_EMBELLISHMENTS,
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stretchDir, containerSize);
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bool isRTL = StyleVisibility()->mDirection;
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// To achieve a minimum size of "1", the container should be enlarged by the
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// unstretched metrics of the fences and separators.
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ApplyUnstretchedMetrics(aPresContext, drawTarget,
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fontSizeInflation, mOpenChar,
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containerSize, isRTL);
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for (i = 0; i < mSeparatorsCount; i++) {
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ApplyUnstretchedMetrics(aPresContext, drawTarget,
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fontSizeInflation, &mSeparatorsChar[i],
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containerSize, isRTL);
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}
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ApplyUnstretchedMetrics(aPresContext, drawTarget,
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fontSizeInflation, mCloseChar,
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containerSize, isRTL);
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//////////////////////////////////////////
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// Prepare the opening fence, separators, and closing fence, and
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// adjust the origin of children.
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// we need to center around the axis
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nscoord delta = std::max(containerSize.ascent - axisHeight,
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containerSize.descent + axisHeight);
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containerSize.ascent = delta + axisHeight;
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containerSize.descent = delta - axisHeight;
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/////////////////
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// opening fence ...
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ReflowChar(aPresContext, drawTarget, *fm,
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fontSizeInflation, mOpenChar,
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NS_MATHML_OPERATOR_FORM_PREFIX, font->mScriptLevel,
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axisHeight, leading, em, containerSize, ascent, descent, isRTL);
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/////////////////
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// separators ...
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for (i = 0; i < mSeparatorsCount; i++) {
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ReflowChar(aPresContext, drawTarget, *fm,
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fontSizeInflation, &mSeparatorsChar[i],
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NS_MATHML_OPERATOR_FORM_INFIX, font->mScriptLevel,
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axisHeight, leading, em, containerSize, ascent, descent, isRTL);
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}
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/////////////////
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// closing fence ...
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ReflowChar(aPresContext, drawTarget, *fm,
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fontSizeInflation, mCloseChar,
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NS_MATHML_OPERATOR_FORM_POSTFIX, font->mScriptLevel,
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axisHeight, leading, em, containerSize, ascent, descent, isRTL);
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//////////////////
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// Adjust the origins of each child.
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// and update our bounding metrics
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i = 0;
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nscoord dx = 0;
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nsBoundingMetrics bm;
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bool firstTime = true;
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nsMathMLChar *leftChar, *rightChar;
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if (isRTL) {
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leftChar = mCloseChar;
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rightChar = mOpenChar;
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} else {
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leftChar = mOpenChar;
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rightChar = mCloseChar;
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}
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if (leftChar) {
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PlaceChar(leftChar, ascent, bm, dx);
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aDesiredSize.mBoundingMetrics = bm;
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firstTime = false;
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}
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if (isRTL) {
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childFrame = this->GetChildList(nsIFrame::kPrincipalList).LastChild();
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} else {
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childFrame = firstChild;
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}
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while (childFrame) {
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ReflowOutput childSize(aReflowInput);
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GetReflowAndBoundingMetricsFor(childFrame, childSize, bm);
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if (firstTime) {
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firstTime = false;
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aDesiredSize.mBoundingMetrics = bm;
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}
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else
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aDesiredSize.mBoundingMetrics += bm;
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FinishReflowChild(childFrame, aPresContext, childSize, nullptr,
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dx, ascent - childSize.BlockStartAscent(), 0);
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dx += childSize.Width();
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if (i < mSeparatorsCount) {
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PlaceChar(&mSeparatorsChar[isRTL ? mSeparatorsCount - 1 - i : i],
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ascent, bm, dx);
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aDesiredSize.mBoundingMetrics += bm;
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}
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i++;
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if (isRTL) {
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childFrame = childFrame->GetPrevSibling();
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} else {
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childFrame = childFrame->GetNextSibling();
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}
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}
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if (rightChar) {
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PlaceChar(rightChar, ascent, bm, dx);
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if (firstTime)
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aDesiredSize.mBoundingMetrics = bm;
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else
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aDesiredSize.mBoundingMetrics += bm;
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}
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aDesiredSize.Width() = aDesiredSize.mBoundingMetrics.width;
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aDesiredSize.Height() = ascent + descent;
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aDesiredSize.SetBlockStartAscent(ascent);
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SetBoundingMetrics(aDesiredSize.mBoundingMetrics);
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SetReference(nsPoint(0, aDesiredSize.BlockStartAscent()));
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// see if we should fix the spacing
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FixInterFrameSpacing(aDesiredSize);
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// Finished with these:
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ClearSavedChildMetrics();
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// Set our overflow area
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GatherAndStoreOverflow(&aDesiredSize);
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aStatus = NS_FRAME_COMPLETE;
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
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}
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static void
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GetCharSpacing(nsMathMLChar* aMathMLChar,
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nsOperatorFlags aForm,
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int32_t aScriptLevel,
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nscoord em,
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nscoord& aLeftSpace,
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nscoord& aRightSpace)
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{
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nsAutoString data;
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aMathMLChar->GetData(data);
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nsOperatorFlags flags = 0;
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float lspace = 0.0f;
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float rspace = 0.0f;
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bool found = nsMathMLOperators::LookupOperator(data, aForm,
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&flags, &lspace, &rspace);
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// We don't want extra space when we are a script
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if (found && aScriptLevel > 0) {
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lspace /= 2.0f;
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rspace /= 2.0f;
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}
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aLeftSpace = NSToCoordRound(lspace * em);
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aRightSpace = NSToCoordRound(rspace * em);
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}
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// helper functions to perform the common task of formatting our chars
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/*static*/ nsresult
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nsMathMLmfencedFrame::ReflowChar(nsPresContext* aPresContext,
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DrawTarget* aDrawTarget,
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nsFontMetrics& aFontMetrics,
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float aFontSizeInflation,
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nsMathMLChar* aMathMLChar,
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nsOperatorFlags aForm,
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|
int32_t aScriptLevel,
|
|
nscoord axisHeight,
|
|
nscoord leading,
|
|
nscoord em,
|
|
nsBoundingMetrics& aContainerSize,
|
|
nscoord& aAscent,
|
|
nscoord& aDescent,
|
|
bool aRTL)
|
|
{
|
|
if (aMathMLChar && 0 < aMathMLChar->Length()) {
|
|
nscoord leftSpace;
|
|
nscoord rightSpace;
|
|
GetCharSpacing(aMathMLChar, aForm, aScriptLevel, em, leftSpace, rightSpace);
|
|
|
|
// stretch the char to the appropriate height if it is not big enough.
|
|
nsBoundingMetrics charSize;
|
|
nsresult res = aMathMLChar->Stretch(aPresContext, aDrawTarget,
|
|
aFontSizeInflation,
|
|
NS_STRETCH_DIRECTION_VERTICAL,
|
|
aContainerSize, charSize,
|
|
NS_STRETCH_NORMAL, aRTL);
|
|
|
|
if (NS_STRETCH_DIRECTION_UNSUPPORTED != aMathMLChar->GetStretchDirection()) {
|
|
// has changed... so center the char around the axis
|
|
nscoord height = charSize.ascent + charSize.descent;
|
|
charSize.ascent = height/2 + axisHeight;
|
|
charSize.descent = height - charSize.ascent;
|
|
}
|
|
else {
|
|
// either it hasn't changed or stretching the char failed (i.e.,
|
|
// nsLayoutUtils::AppUnitBoundsOfString failed)
|
|
leading = 0;
|
|
if (NS_FAILED(res)) {
|
|
nsAutoString data;
|
|
aMathMLChar->GetData(data);
|
|
nsBoundingMetrics metrics =
|
|
nsLayoutUtils::AppUnitBoundsOfString(data.get(), data.Length(),
|
|
aFontMetrics, aDrawTarget);
|
|
charSize.ascent = metrics.ascent;
|
|
charSize.descent = metrics.descent;
|
|
charSize.width = metrics.width;
|
|
// Set this as the bounding metrics of the MathMLChar to leave
|
|
// the necessary room to paint the char.
|
|
aMathMLChar->SetBoundingMetrics(charSize);
|
|
}
|
|
}
|
|
|
|
if (aAscent < charSize.ascent + leading)
|
|
aAscent = charSize.ascent + leading;
|
|
if (aDescent < charSize.descent + leading)
|
|
aDescent = charSize.descent + leading;
|
|
|
|
// account the spacing
|
|
charSize.width += leftSpace + rightSpace;
|
|
|
|
// x-origin is used to store lspace ...
|
|
// y-origin is used to stored the ascent ...
|
|
aMathMLChar->SetRect(nsRect(leftSpace,
|
|
charSize.ascent, charSize.width,
|
|
charSize.ascent + charSize.descent));
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
/*static*/ void
|
|
nsMathMLmfencedFrame::PlaceChar(nsMathMLChar* aMathMLChar,
|
|
nscoord aDesiredAscent,
|
|
nsBoundingMetrics& bm,
|
|
nscoord& dx)
|
|
{
|
|
aMathMLChar->GetBoundingMetrics(bm);
|
|
|
|
// the char's x-origin was used to store lspace ...
|
|
// the char's y-origin was used to store the ascent ...
|
|
// the char's width was used to store the advance with (with spacing) ...
|
|
nsRect rect;
|
|
aMathMLChar->GetRect(rect);
|
|
|
|
nscoord dy = aDesiredAscent - rect.y;
|
|
if (aMathMLChar->GetStretchDirection() != NS_STRETCH_DIRECTION_UNSUPPORTED) {
|
|
// the stretchy char will be centered around the axis
|
|
// so we adjust the returned bounding metrics accordingly
|
|
bm.descent = (bm.ascent + bm.descent) - rect.y;
|
|
bm.ascent = rect.y;
|
|
}
|
|
|
|
aMathMLChar->SetRect(nsRect(dx + rect.x, dy, bm.width, rect.height));
|
|
|
|
bm.leftBearing += rect.x;
|
|
bm.rightBearing += rect.x;
|
|
|
|
// return rect.width since it includes lspace and rspace
|
|
bm.width = rect.width;
|
|
dx += rect.width;
|
|
}
|
|
|
|
static nscoord
|
|
GetMaxCharWidth(nsPresContext* aPresContext,
|
|
DrawTarget* aDrawTarget,
|
|
float aFontSizeInflation,
|
|
nsMathMLChar* aMathMLChar,
|
|
nsOperatorFlags aForm,
|
|
int32_t aScriptLevel,
|
|
nscoord em)
|
|
{
|
|
nscoord width = aMathMLChar->GetMaxWidth(aPresContext, aDrawTarget,
|
|
aFontSizeInflation);
|
|
|
|
if (0 < aMathMLChar->Length()) {
|
|
nscoord leftSpace;
|
|
nscoord rightSpace;
|
|
GetCharSpacing(aMathMLChar, aForm, aScriptLevel, em, leftSpace, rightSpace);
|
|
|
|
width += leftSpace + rightSpace;
|
|
}
|
|
|
|
return width;
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsMathMLmfencedFrame::GetIntrinsicISizeMetrics(nsRenderingContext* aRenderingContext, ReflowOutput& aDesiredSize)
|
|
{
|
|
nscoord width = 0;
|
|
|
|
nsPresContext* presContext = PresContext();
|
|
const nsStyleFont* font = StyleFont();
|
|
float fontSizeInflation = nsLayoutUtils:: FontSizeInflationFor(this);
|
|
RefPtr<nsFontMetrics> fm =
|
|
nsLayoutUtils::GetFontMetricsForFrame(this, fontSizeInflation);
|
|
nscoord em;
|
|
GetEmHeight(fm, em);
|
|
|
|
if (mOpenChar) {
|
|
width +=
|
|
GetMaxCharWidth(presContext, aRenderingContext->GetDrawTarget(),
|
|
fontSizeInflation, mOpenChar,
|
|
NS_MATHML_OPERATOR_FORM_PREFIX, font->mScriptLevel, em);
|
|
}
|
|
|
|
int32_t i = 0;
|
|
for (nsIFrame* childFrame : PrincipalChildList()) {
|
|
// XXX This includes margin while Reflow currently doesn't consider
|
|
// margin, so we may end up with too much space, but, with stretchy
|
|
// characters, this is an approximation anyway.
|
|
width += nsLayoutUtils::IntrinsicForContainer(aRenderingContext, childFrame,
|
|
nsLayoutUtils::PREF_ISIZE);
|
|
|
|
if (i < mSeparatorsCount) {
|
|
width +=
|
|
GetMaxCharWidth(presContext, aRenderingContext->GetDrawTarget(),
|
|
fontSizeInflation, &mSeparatorsChar[i],
|
|
NS_MATHML_OPERATOR_FORM_INFIX, font->mScriptLevel, em);
|
|
}
|
|
i++;
|
|
}
|
|
|
|
if (mCloseChar) {
|
|
width +=
|
|
GetMaxCharWidth(presContext, aRenderingContext->GetDrawTarget(),
|
|
fontSizeInflation, mCloseChar,
|
|
NS_MATHML_OPERATOR_FORM_POSTFIX, font->mScriptLevel, em);
|
|
}
|
|
|
|
aDesiredSize.Width() = width;
|
|
aDesiredSize.mBoundingMetrics.width = width;
|
|
aDesiredSize.mBoundingMetrics.leftBearing = 0;
|
|
aDesiredSize.mBoundingMetrics.rightBearing = width;
|
|
}
|
|
|
|
nscoord
|
|
nsMathMLmfencedFrame::FixInterFrameSpacing(ReflowOutput& aDesiredSize)
|
|
{
|
|
nscoord gap = nsMathMLContainerFrame::FixInterFrameSpacing(aDesiredSize);
|
|
if (!gap) return 0;
|
|
|
|
nsRect rect;
|
|
if (mOpenChar) {
|
|
mOpenChar->GetRect(rect);
|
|
rect.MoveBy(gap, 0);
|
|
mOpenChar->SetRect(rect);
|
|
}
|
|
if (mCloseChar) {
|
|
mCloseChar->GetRect(rect);
|
|
rect.MoveBy(gap, 0);
|
|
mCloseChar->SetRect(rect);
|
|
}
|
|
for (int32_t i = 0; i < mSeparatorsCount; i++) {
|
|
mSeparatorsChar[i].GetRect(rect);
|
|
rect.MoveBy(gap, 0);
|
|
mSeparatorsChar[i].SetRect(rect);
|
|
}
|
|
return gap;
|
|
}
|
|
|
|
// ----------------------
|
|
// the Style System will use these to pass the proper style context to our MathMLChar
|
|
nsStyleContext*
|
|
nsMathMLmfencedFrame::GetAdditionalStyleContext(int32_t aIndex) const
|
|
{
|
|
int32_t openIndex = -1;
|
|
int32_t closeIndex = -1;
|
|
int32_t lastIndex = mSeparatorsCount-1;
|
|
|
|
if (mOpenChar) {
|
|
lastIndex++;
|
|
openIndex = lastIndex;
|
|
}
|
|
if (mCloseChar) {
|
|
lastIndex++;
|
|
closeIndex = lastIndex;
|
|
}
|
|
if (aIndex < 0 || aIndex > lastIndex) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (aIndex < mSeparatorsCount) {
|
|
return mSeparatorsChar[aIndex].GetStyleContext();
|
|
}
|
|
else if (aIndex == openIndex) {
|
|
return mOpenChar->GetStyleContext();
|
|
}
|
|
else if (aIndex == closeIndex) {
|
|
return mCloseChar->GetStyleContext();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
nsMathMLmfencedFrame::SetAdditionalStyleContext(int32_t aIndex,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
int32_t openIndex = -1;
|
|
int32_t closeIndex = -1;
|
|
int32_t lastIndex = mSeparatorsCount-1;
|
|
|
|
if (mOpenChar) {
|
|
lastIndex++;
|
|
openIndex = lastIndex;
|
|
}
|
|
if (mCloseChar) {
|
|
lastIndex++;
|
|
closeIndex = lastIndex;
|
|
}
|
|
if (aIndex < 0 || aIndex > lastIndex) {
|
|
return;
|
|
}
|
|
|
|
if (aIndex < mSeparatorsCount) {
|
|
mSeparatorsChar[aIndex].SetStyleContext(aStyleContext);
|
|
}
|
|
else if (aIndex == openIndex) {
|
|
mOpenChar->SetStyleContext(aStyleContext);
|
|
}
|
|
else if (aIndex == closeIndex) {
|
|
mCloseChar->SetStyleContext(aStyleContext);
|
|
}
|
|
}
|