The Tor Browser / file comparison
comparison: layout/mathml/nsMathMLSelectedFrame.cpp
layout/mathml/nsMathMLSelectedFrame.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
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replaced
| -1:000000000000 | 0:2def3cc0fe7a |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsMathMLSelectedFrame.h" | |
| 7 #include "nsDisplayList.h" | |
| 8 | |
| 9 nsMathMLSelectedFrame::~nsMathMLSelectedFrame() | |
| 10 { | |
| 11 } | |
| 12 | |
| 13 void | |
| 14 nsMathMLSelectedFrame::Init(nsIContent* aContent, | |
| 15 nsIFrame* aParent, | |
| 16 nsIFrame* aPrevInFlow) | |
| 17 { | |
| 18 // Init our local attributes | |
| 19 mInvalidMarkup = false; | |
| 20 mSelectedFrame = nullptr; | |
| 21 | |
| 22 // Let the base class do the rest | |
| 23 nsMathMLContainerFrame::Init(aContent, aParent, aPrevInFlow); | |
| 24 } | |
| 25 | |
| 26 NS_IMETHODIMP | |
| 27 nsMathMLSelectedFrame::TransmitAutomaticData() | |
| 28 { | |
| 29 // Note that to determine space-like and embellished op properties: | |
| 30 // - <semantics> behaves the same as <maction> | |
| 31 // - <annotation-xml> behaves the same as <mrow> | |
| 32 | |
| 33 // The REC defines the following element to be space-like: | |
| 34 // * an maction element whose selected sub-expression exists and is | |
| 35 // space-like; | |
| 36 nsIMathMLFrame* mathMLFrame = do_QueryFrame(mSelectedFrame); | |
| 37 if (mathMLFrame && mathMLFrame->IsSpaceLike()) { | |
| 38 mPresentationData.flags |= NS_MATHML_SPACE_LIKE; | |
| 39 } else { | |
| 40 mPresentationData.flags &= ~NS_MATHML_SPACE_LIKE; | |
| 41 } | |
| 42 | |
| 43 // The REC defines the following element to be an embellished operator: | |
| 44 // * an maction element whose selected sub-expression exists and is an | |
| 45 // embellished operator; | |
| 46 mPresentationData.baseFrame = mSelectedFrame; | |
| 47 GetEmbellishDataFrom(mSelectedFrame, mEmbellishData); | |
| 48 | |
| 49 return NS_OK; | |
| 50 } | |
| 51 | |
| 52 nsresult | |
| 53 nsMathMLSelectedFrame::ChildListChanged(int32_t aModType) | |
| 54 { | |
| 55 GetSelectedFrame(); | |
| 56 return nsMathMLContainerFrame::ChildListChanged(aModType); | |
| 57 } | |
| 58 | |
| 59 nsresult | |
| 60 nsMathMLSelectedFrame::SetInitialChildList(ChildListID aListID, | |
| 61 nsFrameList& aChildList) | |
| 62 { | |
| 63 nsresult rv = nsMathMLContainerFrame::SetInitialChildList(aListID, | |
| 64 aChildList); | |
| 65 // This very first call to GetSelectedFrame() will cause us to be marked as an | |
| 66 // embellished operator if the selected child is an embellished operator | |
| 67 GetSelectedFrame(); | |
| 68 return rv; | |
| 69 } | |
| 70 | |
| 71 // Only paint the selected child... | |
| 72 void | |
| 73 nsMathMLSelectedFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 74 const nsRect& aDirtyRect, | |
| 75 const nsDisplayListSet& aLists) | |
| 76 { | |
| 77 // Report an error if something wrong was found in this frame. | |
| 78 // We can't call nsDisplayMathMLError from here, | |
| 79 // so ask nsMathMLContainerFrame to do the work for us. | |
| 80 if (NS_MATHML_HAS_ERROR(mPresentationData.flags)) { | |
| 81 nsMathMLContainerFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists); | |
| 82 return; | |
| 83 } | |
| 84 | |
| 85 DisplayBorderBackgroundOutline(aBuilder, aLists); | |
| 86 | |
| 87 nsIFrame* childFrame = GetSelectedFrame(); | |
| 88 if (childFrame) { | |
| 89 // Put the child's background directly onto the content list | |
| 90 nsDisplayListSet set(aLists, aLists.Content()); | |
| 91 // The children should be in content order | |
| 92 BuildDisplayListForChild(aBuilder, childFrame, aDirtyRect, set); | |
| 93 } | |
| 94 | |
| 95 #if defined(DEBUG) && defined(SHOW_BOUNDING_BOX) | |
| 96 // visual debug | |
| 97 DisplayBoundingMetrics(aBuilder, this, mReference, mBoundingMetrics, aLists); | |
| 98 #endif | |
| 99 } | |
| 100 | |
| 101 // Only reflow the selected child ... | |
| 102 nsresult | |
| 103 nsMathMLSelectedFrame::Reflow(nsPresContext* aPresContext, | |
| 104 nsHTMLReflowMetrics& aDesiredSize, | |
| 105 const nsHTMLReflowState& aReflowState, | |
| 106 nsReflowStatus& aStatus) | |
| 107 { | |
| 108 nsresult rv = NS_OK; | |
| 109 aStatus = NS_FRAME_COMPLETE; | |
| 110 aDesiredSize.Width() = aDesiredSize.Height() = 0; | |
| 111 aDesiredSize.SetTopAscent(0); | |
| 112 mBoundingMetrics = nsBoundingMetrics(); | |
| 113 nsIFrame* childFrame = GetSelectedFrame(); | |
| 114 if (childFrame) { | |
| 115 nsSize availSize(aReflowState.ComputedWidth(), NS_UNCONSTRAINEDSIZE); | |
| 116 nsHTMLReflowState childReflowState(aPresContext, aReflowState, | |
| 117 childFrame, availSize); | |
| 118 rv = ReflowChild(childFrame, aPresContext, aDesiredSize, | |
| 119 childReflowState, aStatus); | |
| 120 SaveReflowAndBoundingMetricsFor(childFrame, aDesiredSize, | |
| 121 aDesiredSize.mBoundingMetrics); | |
| 122 mBoundingMetrics = aDesiredSize.mBoundingMetrics; | |
| 123 } | |
| 124 FinalizeReflow(*aReflowState.rendContext, aDesiredSize); | |
| 125 NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize); | |
| 126 return rv; | |
| 127 } | |
| 128 | |
| 129 // Only place the selected child ... | |
| 130 /* virtual */ nsresult | |
| 131 nsMathMLSelectedFrame::Place(nsRenderingContext& aRenderingContext, | |
| 132 bool aPlaceOrigin, | |
| 133 nsHTMLReflowMetrics& aDesiredSize) | |
| 134 { | |
| 135 nsIFrame* childFrame = GetSelectedFrame(); | |
| 136 | |
| 137 if (mInvalidMarkup) { | |
| 138 return ReflowError(aRenderingContext, aDesiredSize); | |
| 139 } | |
| 140 | |
| 141 aDesiredSize.Width() = aDesiredSize.Height() = 0; | |
| 142 aDesiredSize.SetTopAscent(0); | |
| 143 mBoundingMetrics = nsBoundingMetrics(); | |
| 144 if (childFrame) { | |
| 145 GetReflowAndBoundingMetricsFor(childFrame, aDesiredSize, mBoundingMetrics); | |
| 146 if (aPlaceOrigin) { | |
| 147 FinishReflowChild(childFrame, PresContext(), aDesiredSize, nullptr, 0, 0, 0); | |
| 148 } | |
| 149 mReference.x = 0; | |
| 150 mReference.y = aDesiredSize.TopAscent(); | |
| 151 } | |
| 152 aDesiredSize.mBoundingMetrics = mBoundingMetrics; | |
| 153 return NS_OK; | |
| 154 } |
