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-rw-r--r--layout/mathml/nsMathMLmpaddedFrame.h99
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diff --git a/layout/mathml/nsMathMLmpaddedFrame.h b/layout/mathml/nsMathMLmpaddedFrame.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef nsMathMLmpaddedFrame_h___
+#define nsMathMLmpaddedFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "nsCSSValue.h"
+#include "nsMathMLContainerFrame.h"
+
+namespace mozilla {
+class PresShell;
+} // namespace mozilla
+
+//
+// <mpadded> -- adjust space around content
+//
+
+class nsMathMLmpaddedFrame final : public nsMathMLContainerFrame {
+ public:
+ NS_DECL_FRAMEARENA_HELPERS(nsMathMLmpaddedFrame)
+
+ friend nsIFrame* NS_NewMathMLmpaddedFrame(mozilla::PresShell* aPresShell,
+ ComputedStyle* aStyle);
+
+ NS_IMETHOD
+ InheritAutomaticData(nsIFrame* aParent) override;
+
+ NS_IMETHOD
+ TransmitAutomaticData() override {
+ return TransmitAutomaticDataForMrowLikeElement();
+ }
+
+ virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus) override;
+
+ virtual nsresult Place(DrawTarget* aDrawTarget, bool aPlaceOrigin,
+ ReflowOutput& aDesiredSize) override;
+
+ bool IsMrowLike() override {
+ return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild();
+ }
+
+ protected:
+ explicit nsMathMLmpaddedFrame(ComputedStyle* aStyle,
+ nsPresContext* aPresContext)
+ : nsMathMLContainerFrame(aStyle, aPresContext, kClassID),
+ mWidthSign(0),
+ mHeightSign(0),
+ mDepthSign(0),
+ mLeadingSpaceSign(0),
+ mVerticalOffsetSign(0),
+ mWidthPseudoUnit(0),
+ mHeightPseudoUnit(0),
+ mDepthPseudoUnit(0),
+ mLeadingSpacePseudoUnit(0),
+ mVerticalOffsetPseudoUnit(0) {}
+
+ virtual ~nsMathMLmpaddedFrame();
+
+ virtual nsresult MeasureForWidth(DrawTarget* aDrawTarget,
+ ReflowOutput& aDesiredSize) override;
+
+ private:
+ nsCSSValue mWidth;
+ nsCSSValue mHeight;
+ nsCSSValue mDepth;
+ nsCSSValue mLeadingSpace;
+ nsCSSValue mVerticalOffset;
+
+ int32_t mWidthSign;
+ int32_t mHeightSign;
+ int32_t mDepthSign;
+ int32_t mLeadingSpaceSign;
+ int32_t mVerticalOffsetSign;
+
+ int32_t mWidthPseudoUnit;
+ int32_t mHeightPseudoUnit;
+ int32_t mDepthPseudoUnit;
+ int32_t mLeadingSpacePseudoUnit;
+ int32_t mVerticalOffsetPseudoUnit;
+
+ // helpers to process the attributes
+ void ProcessAttributes();
+
+ bool ParseAttribute(nsString& aString, int32_t& aSign, nsCSSValue& aCSSValue,
+ int32_t& aPseudoUnit);
+
+ void UpdateValue(int32_t aSign, int32_t aPseudoUnit,
+ const nsCSSValue& aCSSValue,
+ const ReflowOutput& aDesiredSize, nscoord& aValueToUpdate,
+ float aFontSizeInflation) const;
+};
+
+#endif /* nsMathMLmpaddedFrame_h___ */