Bug 1797012 - Change NS_STYLE_MATH_STYLE_* macros to enum StyleMathStyle. r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D160016

dom/mathml/MathMLElement.cpp

@@ -593,8 +593,8 @@ void MathMLElement::MapMathMLAttributesInto(
       !aDecls.PropertyIsSet(eCSSProperty_math_style)) {
     auto str = value->GetStringValue();
     static const char displaystyles[][6] = {"false", "true"};
-    static const uint8_t mathStyle[MOZ_ARRAY_LENGTH(displaystyles)] = {
-        NS_STYLE_MATH_STYLE_COMPACT, NS_STYLE_MATH_STYLE_NORMAL};
+    static const StyleMathStyle mathStyle[MOZ_ARRAY_LENGTH(displaystyles)] = {
+        StyleMathStyle::Compact, StyleMathStyle::Normal};
     for (uint32_t i = 0; i < ArrayLength(displaystyles); ++i) {
       if (str.LowerCaseEqualsASCII(displaystyles[i])) {
         aDecls.SetKeywordValue(eCSSProperty_math_style, mathStyle[i]);

layout/mathml/nsMathMLmencloseFrame.cpp

@@ -362,8 +362,7 @@ nsresult nsMathMLmencloseFrame::PlaceInternal(DrawTarget* aDrawTarget,
   if (delta) padding += onePixel - delta;  // round up
 
   if (IsToDraw(NOTATION_LONGDIV) || IsToDraw(NOTATION_RADICAL)) {
-    GetRadicalParameters(fm,
-                         StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_NORMAL,
+    GetRadicalParameters(fm, StyleFont()->mMathStyle == StyleMathStyle::Normal,
                          mRadicalRuleThickness, leading, psi);
 
     // make sure that the rule appears on on screen

layout/mathml/nsMathMLmfracFrame.cpp

@@ -43,7 +43,7 @@ eMathMLFrameType nsMathMLmfracFrame::GetMathMLFrameType() {
 }
 
 uint8_t nsMathMLmfracFrame::ScriptIncrement(nsIFrame* aFrame) {
-  if (StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_COMPACT && aFrame &&
+  if (StyleFont()->mMathStyle == StyleMathStyle::Compact && aFrame &&
       (mFrames.FirstChild() == aFrame || mFrames.LastChild() == aFrame)) {
     return 1;
   }
@@ -59,7 +59,7 @@ nsMathMLmfracFrame::TransmitAutomaticData() {
 
   // If displaystyle is false, then scriptlevel is incremented, so notify the
   // children of this.
-  if (StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_COMPACT) {
+  if (StyleFont()->mMathStyle == StyleMathStyle::Compact) {
     PropagateFrameFlagFor(mFrames.FirstChild(),
                           NS_FRAME_MATHML_SCRIPT_DESCENDANT);
     PropagateFrameFlagFor(mFrames.LastChild(),
@@ -197,7 +197,7 @@ nsresult nsMathMLmfracFrame::PlaceInternal(DrawTarget* aDrawTarget,
       CalcLineThickness(presContext, mComputedStyle, value, onePixel,
                         defaultRuleThickness, fontSizeInflation);
 
-  bool displayStyle = StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_NORMAL;
+  bool displayStyle = StyleFont()->mMathStyle == StyleMathStyle::Compact;
 
   mLineRect.height = mLineThickness;
 

layout/mathml/nsMathMLmmultiscriptsFrame.cpp

@@ -229,8 +229,7 @@ nsresult nsMathMLmmultiscriptsFrame::PlaceMultiScript(
 
     // get sup script shift depending on current script level and display style
     // Rule 18c, App. G, TeXbook
-    if (font->mMathDepth == 0 &&
-        font->mMathStyle == NS_STYLE_MATH_STYLE_NORMAL &&
+    if (font->mMathDepth == 0 && font->mMathStyle == StyleMathStyle::Normal &&
         !NS_MATHML_IS_COMPRESSED(presentationData.flags)) {
       // Style D in TeXbook
       supScriptShift = supScriptShift1;

layout/mathml/nsMathMLmoFrame.cpp

@@ -553,7 +553,7 @@ static uint32_t GetStretchHint(nsOperatorFlags aFlags,
     // stretchy are true or false (see bug 69325).
     // . largeopOnly is taken if largeop=true and stretchy=false
     // . largeop is taken if largeop=true and stretchy=true
-    if (aStyleFont->mMathStyle == NS_STYLE_MATH_STYLE_NORMAL &&
+    if (aStyleFont->mMathStyle == StyleMathStyle::Normal &&
         NS_MATHML_OPERATOR_IS_LARGEOP(aFlags)) {
       stretchHint = NS_STRETCH_LARGEOP;  // (largeopOnly, not mask!)
       if (NS_MATHML_OPERATOR_IS_STRETCHY(aFlags)) {
@@ -946,7 +946,7 @@ nsresult nsMathMLmoFrame::Place(DrawTarget* aDrawTarget, bool aPlaceOrigin,
      Stretch() method.
   */
 
-  if (!aPlaceOrigin && StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_NORMAL &&
+  if (!aPlaceOrigin && StyleFont()->mMathStyle == StyleMathStyle::Normal &&
       NS_MATHML_OPERATOR_IS_LARGEOP(mFlags) && UseMathMLChar()) {
     nsBoundingMetrics newMetrics;
     rv = mMathMLChar.Stretch(

layout/mathml/nsMathMLmrootFrame.cpp

@@ -228,8 +228,7 @@ void nsMathMLmrootFrame::Reflow(nsPresContext* aPresContext,
       nsLayoutUtils::GetFontMetricsForFrame(this, fontSizeInflation);
 
   nscoord ruleThickness, leading, psi;
-  GetRadicalParameters(fm,
-                       StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_NORMAL,
+  GetRadicalParameters(fm, StyleFont()->mMathStyle == StyleMathStyle::Normal,
                        ruleThickness, leading, psi);
 
   // built-in: adjust clearance psi to emulate \mathstrut using '1' (TexBook,

layout/mathml/nsMathMLmunderoverFrame.cpp

@@ -57,7 +57,7 @@ nsMathMLmunderoverFrame::UpdatePresentationData(uint32_t aFlagsValues,
   // disable the stretch-all flag if we are going to act like a
   // subscript-superscript pair
   if (NS_MATHML_EMBELLISH_IS_MOVABLELIMITS(mEmbellishData.flags) &&
-      StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_COMPACT) {
+      StyleFont()->mMathStyle == StyleMathStyle::Compact) {
     mPresentationData.flags &= ~NS_MATHML_STRETCH_ALL_CHILDREN_HORIZONTALLY;
   } else {
     mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_HORIZONTALLY;
@@ -257,7 +257,7 @@ XXX The winner is the outermost setting in conflicting settings like these:
 
   bool subsupDisplay =
       NS_MATHML_EMBELLISH_IS_MOVABLELIMITS(mEmbellishData.flags) &&
-      StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_COMPACT;
+      StyleFont()->mMathStyle == StyleMathStyle::Compact;
 
   // disable the stretch-all flag if we are going to act like a superscript
   if (subsupDisplay) {
@@ -351,7 +351,7 @@ The REC says:
 
 i.e.,:
  if (NS_MATHML_EMBELLISH_IS_MOVABLELIMITS(mEmbellishDataflags) &&
-     StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_COMPACT) {
+     StyleFont()->mMathStyle == StyleMathStyle::Compact) {
   // place like subscript-superscript pair
  }
  else {
@@ -365,7 +365,7 @@ nsresult nsMathMLmunderoverFrame::Place(DrawTarget* aDrawTarget,
                                         ReflowOutput& aDesiredSize) {
   float fontSizeInflation = nsLayoutUtils::FontSizeInflationFor(this);
   if (NS_MATHML_EMBELLISH_IS_MOVABLELIMITS(mEmbellishData.flags) &&
-      StyleFont()->mMathStyle == NS_STYLE_MATH_STYLE_COMPACT) {
+      StyleFont()->mMathStyle == StyleMathStyle::Compact) {
     // place like sub sup or subsup
     if (mContent->IsMathMLElement(nsGkAtoms::munderover_)) {
       return nsMathMLmmultiscriptsFrame::PlaceMultiScript(

layout/style/ServoBindings.toml

@@ -110,6 +110,7 @@ rusty-enums = [
     "mozilla::StyleShapeSourceType",
     "mozilla::StyleVisibility",
     "mozilla::StyleBasicShapeType",
+    "mozilla::StyleMathStyle",
     "nsStyleImageLayers_Size_DimensionType",
     "mozilla::StyleBorderCollapse",
     "mozilla::StyleBorderImageRepeat",

layout/style/nsStyleConsts.h

@@ -390,8 +390,7 @@ enum class StyleMathVariant : uint8_t {
 };
 
 // See nsStyleFont::mMathStyle
-#define NS_STYLE_MATH_STYLE_COMPACT 0
-#define NS_STYLE_MATH_STYLE_NORMAL 1
+enum class StyleMathStyle : uint8_t { Compact = 0, Normal = 1 };
 
 // See nsStyleDisplay.mPosition
 enum class StylePositionProperty : uint8_t {

layout/style/nsStyleStruct.cpp

@@ -232,7 +232,7 @@ nsStyleFont::nsStyleFont(const Document& aDocument)
       mFontPalette(StyleFontPalette::Normal()),
       mMathDepth(0),
       mMathVariant(StyleMathVariant::None),
-      mMathStyle(NS_STYLE_MATH_STYLE_NORMAL),
+      mMathStyle(StyleMathStyle::Normal),
       mMinFontSizeRatio(100),  // 100%
       mExplicitLanguage(false),
       mAllowZoomAndMinSize(true),

layout/style/nsStyleStruct.h

@@ -140,7 +140,7 @@ struct MOZ_NEEDS_MEMMOVABLE_MEMBERS nsStyleFont {
   // MathML  mathvariant support
   mozilla::StyleMathVariant mMathVariant;
   // math-style support (used for MathML displaystyle)
-  uint8_t mMathStyle;
+  mozilla::StyleMathStyle mMathStyle;
 
   // allow different min font-size for certain cases
   uint8_t mMinFontSizeRatio;  // percent * 100

servo/components/style/properties/longhands/font.mako.rs

@@ -269,6 +269,7 @@ ${helpers.single_keyword(
     "math-style",
     "normal compact",
     engines="gecko",
+    gecko_enum_prefix="StyleMathStyle",
     gecko_pref="layout.css.math-style.enabled",
     spec="https://mathml-refresh.github.io/mathml-core/#the-math-style-property",
     has_effect_on_gecko_scrollbars=False,