nsresult nsMathMLmencloseFrame::AllocateMathMLChar(nsMencloseNotation mask)
{
// Is the char already allocated?
if ((mask == NOTATION_LONGDIV && mLongDivCharIndex >= 0) ||
(mask == NOTATION_RADICAL && mRadicalCharIndex >= 0))
return NS_OK;
// No need to track the style context given to our MathML chars.
// The Style System will use Get/SetAdditionalStyleContext() to keep it
// up-to-date if dynamic changes arise.
PRUint32 i = mMathMLChar.Length();
nsAutoString Char;
if (!mMathMLChar.AppendElement())
return NS_ERROR_OUT_OF_MEMORY;
if (mask == NOTATION_LONGDIV) {
Char.Assign(kLongDivChar);
mLongDivCharIndex = i;
} else if (mask == NOTATION_RADICAL) {
Char.Assign(kRadicalChar);
mRadicalCharIndex = i;
}
nsPresContext *presContext = PresContext();
mMathMLChar[i].SetData(presContext, Char);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext,
&mMathMLChar[i],
true);
return NS_OK;
}
NS_IMETHODIMP
nsMathMLmfracFrame::AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType)
{
if (nsGkAtoms::bevelled_ == aAttribute) {
if (!IsBevelled()) {
// disable the bevelled rendering
if (mSlashChar) {
delete mSlashChar;
mSlashChar = nsnull;
}
}
else {
// enable the bevelled rendering
if (!mSlashChar) {
mSlashChar = new nsMathMLChar();
if (mSlashChar) {
nsPresContext* presContext = PresContext();
nsAutoString slashChar; slashChar.Assign(kSlashChar);
mSlashChar->SetData(presContext, slashChar);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, mSlashChar, PR_TRUE);
}
}
}
}
return nsMathMLContainerFrame::
AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
void
nsMathMLmrootFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsMathMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
nsPresContext *presContext = PresContext();
// No need to track the style context given to our MathML char.
// The Style System will use Get/SetAdditionalStyleContext() to keep it
// up-to-date if dynamic changes arise.
nsAutoString sqrChar; sqrChar.Assign(kSqrChar);
mSqrChar.SetData(presContext, sqrChar);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, &mSqrChar, true);
}
NS_IMETHODIMP
nsMathMLmsqrtFrame::Init(nsPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsStyleContext* aContext,
nsIFrame* aPrevInFlow)
{
nsresult rv = nsMathMLContainerFrame::Init(aPresContext, aContent, aParent,
aContext, aPrevInFlow);
// No need to tract the style context given to our MathML char.
// The Style System will use Get/SetAdditionalStyleContext() to keep it
// up-to-date if dynamic changes arise.
nsAutoString sqrChar; sqrChar.Assign(kSqrChar);
mSqrChar.SetData(aPresContext, sqrChar);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, &mSqrChar, PR_TRUE);
return rv;
}
NS_IMETHODIMP
nsMathMLmfracFrame::Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsresult rv = nsMathMLContainerFrame::Init(aContent, aParent, aPrevInFlow);
if (IsBevelled()) {
// enable the bevelled rendering
mSlashChar = new nsMathMLChar();
if (mSlashChar) {
nsPresContext* presContext = PresContext();
nsAutoString slashChar; slashChar.Assign(kSlashChar);
mSlashChar->SetData(presContext, slashChar);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, mSlashChar, PR_TRUE);
}
}
return rv;
}
void
nsMathMLmfencedFrame::CreateFencesAndSeparators(nsPresContext* aPresContext)
{
nsAutoString value;
PRBool isMutable = PR_FALSE;
//////////////
// see if the opening fence is there ...
if (!GetAttribute(mContent, mPresentationData.mstyle, nsGkAtoms::open,
value)) {
value = PRUnichar('('); // default as per the MathML REC
} else {
value.CompressWhitespace();
}
if (!value.IsEmpty()) {
mOpenChar = new nsMathMLChar;
mOpenChar->SetData(aPresContext, value);
isMutable = nsMathMLOperators::IsMutableOperator(value);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mOpenChar, isMutable);
}
//////////////
// see if the closing fence is there ...
if(!GetAttribute(mContent, mPresentationData.mstyle,
nsGkAtoms::close, value)) {
value = PRUnichar(')'); // default as per the MathML REC
} else {
value.CompressWhitespace();
}
if (!value.IsEmpty()) {
mCloseChar = new nsMathMLChar;
mCloseChar->SetData(aPresContext, value);
isMutable = nsMathMLOperators::IsMutableOperator(value);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mCloseChar, isMutable);
}
//////////////
// see if separators are there ...
if (!GetAttribute(mContent, mPresentationData.mstyle,
nsGkAtoms::separators_, value)) {
value = PRUnichar(','); // default as per the MathML REC
} else {
value.StripWhitespace();
}
mSeparatorsCount = value.Length();
if (0 < mSeparatorsCount) {
PRInt32 sepCount = mFrames.GetLength() - 1;
if (0 < sepCount) {
mSeparatorsChar = new nsMathMLChar[sepCount];
nsAutoString sepChar;
for (PRInt32 i = 0; i < sepCount; i++) {
if (i < mSeparatorsCount) {
sepChar = value[i];
isMutable = nsMathMLOperators::IsMutableOperator(sepChar);
}
else {
sepChar = value[mSeparatorsCount-1];
// keep the value of isMutable that was set earlier
}
mSeparatorsChar[i].SetData(aPresContext, sepChar);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, &mSeparatorsChar[i], isMutable);
}
mSeparatorsCount = sepCount;
} else {
// No separators. Note that sepCount can be -1 here, so don't
// set mSeparatorsCount to it.
mSeparatorsCount = 0;
}
}
}
// get the text that we enclose and setup our nsMathMLChar
void
nsMathMLmoFrame::ProcessTextData()
{
mFlags = 0;
nsAutoString data;
nsContentUtils::GetNodeTextContent(mContent, false, data);
data.CompressWhitespace();
int32_t length = data.Length();
PRUnichar ch = (length == 0) ? kNullCh : data[0];
if ((length == 1) &&
(ch == kInvisibleComma ||
ch == kApplyFunction ||
ch == kInvisibleTimes)) {
mFlags |= NS_MATHML_OPERATOR_INVISIBLE;
}
// don't bother doing anything special if we don't have a
// single child with a visible text content
nsPresContext* presContext = PresContext();
if (NS_MATHML_OPERATOR_IS_INVISIBLE(mFlags) || mFrames.GetLength() != 1) {
data.Truncate(); // empty data to reset the char
mMathMLChar.SetData(presContext, data);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, &mMathMLChar, false);
return;
}
// special... in math mode, the usual minus sign '-' looks too short, so
// what we do here is to remap <mo>-</mo> to the official Unicode minus
// sign (U+2212) which looks much better. For background on this, see
// http://groups.google.com/groups?hl=en&th=66488daf1ade7635&rnum=1
if (1 == length && ch == '-') {
ch = 0x2212;
data = ch;
}
// cache the special bits: mutable, accent, movablelimits, centered.
// we need to do this in anticipation of other requirements, and these
// bits don't change. Do not reset these bits unless the text gets changed.
// lookup all the forms under which the operator is listed in the dictionary,
// and record whether the operator has accent="true" or movablelimits="true"
nsOperatorFlags flags[4];
float lspace[4], rspace[4];
nsMathMLOperators::LookupOperators(data, flags, lspace, rspace);
nsOperatorFlags allFlags =
flags[NS_MATHML_OPERATOR_FORM_INFIX] |
flags[NS_MATHML_OPERATOR_FORM_POSTFIX] |
flags[NS_MATHML_OPERATOR_FORM_PREFIX];
mFlags |= allFlags & NS_MATHML_OPERATOR_ACCENT;
mFlags |= allFlags & NS_MATHML_OPERATOR_MOVABLELIMITS;
bool isMutable =
NS_MATHML_OPERATOR_IS_STRETCHY(allFlags) ||
NS_MATHML_OPERATOR_IS_LARGEOP(allFlags);
if (isMutable)
mFlags |= NS_MATHML_OPERATOR_MUTABLE;
// see if this is an operator that should be centered to cater for
// fonts that are not math-aware
if (1 == length) {
if ((ch == '+') || (ch == '=') || (ch == '*') ||
(ch == 0x2212) || // −
(ch == 0x2264) || // ≤
(ch == 0x2265) || // ≥
(ch == 0x00D7)) { // ×
mFlags |= NS_MATHML_OPERATOR_CENTERED;
}
}
// cache the operator
mMathMLChar.SetData(presContext, data);
ResolveMathMLCharStyle(presContext, mContent, mStyleContext, &mMathMLChar, isMutable);
// cache the native direction -- beware of bug 133429...
// mEmbellishData.direction must always retain our native direction, whereas
// mMathMLChar.GetStretchDirection() may change later, when Stretch() is called
mEmbellishData.direction = mMathMLChar.GetStretchDirection();
}
void
nsMathMLmfencedFrame::CreateFencesAndSeparators(nsPresContext* aPresContext)
{
nsAutoString value;
//////////////
// see if the opening fence is there ...
if (!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::open, value)) {
value = char16_t('('); // default as per the MathML REC
} else {
value.CompressWhitespace();
}
if (!value.IsEmpty()) {
mOpenChar = new nsMathMLChar;
mOpenChar->SetData(aPresContext, value);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mOpenChar);
}
//////////////
// see if the closing fence is there ...
if(!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::close, value)) {
value = char16_t(')'); // default as per the MathML REC
} else {
value.CompressWhitespace();
}
if (!value.IsEmpty()) {
mCloseChar = new nsMathMLChar;
mCloseChar->SetData(aPresContext, value);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, mCloseChar);
}
//////////////
// see if separators are there ...
if (!mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::separators_, value)) {
value = char16_t(','); // default as per the MathML REC
} else {
value.StripWhitespace();
}
mSeparatorsCount = value.Length();
if (0 < mSeparatorsCount) {
int32_t sepCount = mFrames.GetLength() - 1;
if (0 < sepCount) {
mSeparatorsChar = new nsMathMLChar[sepCount];
nsAutoString sepChar;
for (int32_t i = 0; i < sepCount; i++) {
if (i < mSeparatorsCount) {
sepChar = value[i];
}
else {
sepChar = value[mSeparatorsCount-1];
}
mSeparatorsChar[i].SetData(aPresContext, sepChar);
ResolveMathMLCharStyle(aPresContext, mContent, mStyleContext, &mSeparatorsChar[i]);
}
mSeparatorsCount = sepCount;
} else {
// No separators. Note that sepCount can be -1 here, so don't
// set mSeparatorsCount to it.
mSeparatorsCount = 0;
}
}
}