C++ (Cpp) NS_MATHML_OPERATOR_IS_MUTABLE示例

示例#1

文件： nsMathMLmoFrame.cpp 项目： L2-D2/gecko-dev

bool
nsMathMLmoFrame::UseMathMLChar()
{
  return (NS_MATHML_OPERATOR_GET_FORM(mFlags) &&
          NS_MATHML_OPERATOR_IS_MUTABLE(mFlags)) ||
    NS_MATHML_OPERATOR_IS_CENTERED(mFlags);
}

示例#2

文件： nsMathMLmoFrame.cpp 项目： RickEyre/mozilla-central

static uint32_t
GetStretchHint(nsOperatorFlags aFlags, nsPresentationData aPresentationData,
               bool aIsVertical)
{
  uint32_t stretchHint = NS_STRETCH_NONE;
  // See if it is okay to stretch,
  // starting from what the Operator Dictionary said
  if (NS_MATHML_OPERATOR_IS_MUTABLE(aFlags)) {
    // set the largeop or largeopOnly flags to suitably cover all the
    // 8 possible cases depending on whether displaystyle, largeop,
    // 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 (NS_MATHML_IS_DISPLAYSTYLE(aPresentationData.flags) &&
        NS_MATHML_OPERATOR_IS_LARGEOP(aFlags)) {
      stretchHint = NS_STRETCH_LARGEOP; // (largeopOnly, not mask!)
      if (NS_MATHML_OPERATOR_IS_INTEGRAL(aFlags)) {
        stretchHint |= NS_STRETCH_INTEGRAL;
      }
      if (NS_MATHML_OPERATOR_IS_STRETCHY(aFlags)) {
        stretchHint |= NS_STRETCH_NEARER | NS_STRETCH_LARGER;
      }
    }
    else if(NS_MATHML_OPERATOR_IS_STRETCHY(aFlags)) {
      if (aIsVertical) {
        // TeX hint. Can impact some sloppy markups missing <mrow></mrow>
        stretchHint = NS_STRETCH_NEARER;
      }
      else {
        stretchHint = NS_STRETCH_NORMAL;
      }
    }
    // else if the stretchy and largeop attributes have been disabled,
    // the operator is not mutable
  }
  return stretchHint;
}