зеркало из https://github.com/mozilla/pjs.git
b=605605 Uninitialised value used in nsMathMLChar r=karlt
--HG-- extra : transplant_source : _G%B6%C6%C6q%C0a%F0f-%CD%AF%FB%FE%F0%BAYc%D5
This commit is contained in:
Frédéric Wang
Родитель
427e32afb2
Коммит
feb01ac8f7
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@ -1156,7 +1156,8 @@ public:
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nscoord aTargetSize,
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PRUint32 aStretchHint,
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nsBoundingMetrics& aStretchedMetrics,
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const nsAString& aFamilies)
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const nsAString& aFamilies,
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PRBool& aGlyphFound)
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: mChar(aChar),
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mPresContext(aPresContext),
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mRenderingContext(aRenderingContext),
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@ -1166,7 +1167,8 @@ public:
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mBoundingMetrics(aStretchedMetrics),
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mFamilies(aFamilies),
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mTryVariants(PR_TRUE),
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mTryParts(PR_TRUE) {}
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mTryParts(PR_TRUE),
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mGlyphFound(aGlyphFound) {}
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static PRBool
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EnumCallback(const nsString& aFamily, PRBool aGeneric, void *aData);
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@ -1195,6 +1197,7 @@ public:
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private:
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nsAutoTArray<nsGlyphTable*,16> mTablesTried;
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nsGlyphTable* mGlyphTable; // for this callback
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PRBool& mGlyphFound;
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};
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@ -1250,6 +1253,7 @@ nsMathMLChar::StretchEnumContext::TryVariants(nsGlyphTable* aGlyphTable,
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if (largeopOnly ||
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IsSizeBetter(charSize, bestSize, mTargetSize, mStretchHint)) {
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mGlyphFound = PR_TRUE;
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if (maxWidth) {
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// IsSizeBetter() checked that charSize < maxsize;
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// Leave ascent, descent, and bestsize as these contain maxsize.
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@ -1320,6 +1324,7 @@ nsMathMLChar::StretchEnumContext::TryParts(nsGlyphTable* aGlyphTable,
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// all went well, painting will be delegated from now on to children
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mChar->mGlyph = kNullGlyph; // this will tell paint to build by parts
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mGlyphFound = PR_TRUE;
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mChar->mGlyphTable = aGlyphTable;
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mBoundingMetrics = compositeSize;
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return PR_TRUE; // no more searching
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@ -1447,6 +1452,7 @@ nsMathMLChar::StretchEnumContext::TryParts(nsGlyphTable* aGlyphTable,
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mBoundingMetrics.leftBearing = 0;
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mBoundingMetrics.rightBearing = computedSize;
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}
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mGlyphFound = PR_TRUE;
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if (maxWidth)
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return PR_FALSE; // Continue to check other sizes
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@ -1565,7 +1571,6 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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}
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if (!maxWidth) {
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mScaleY = mScaleX = 1.0;
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mUnscaledAscent = aDesiredStretchSize.ascent;
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}
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@ -1655,6 +1660,7 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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// 2/3. Search for a glyph or set of part glyphs of appropriate size
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////////////////////////////////////////////////////////////////////////////////////
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PRBool glyphFound = PR_FALSE;
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nsAutoString cssFamilies;
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if (!done) {
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@ -1669,7 +1675,7 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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StretchEnumContext enumData(this, aPresContext, aRenderingContext,
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aStretchDirection, targetSize, aStretchHint,
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aDesiredStretchSize, font.name);
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aDesiredStretchSize, font.name, glyphFound);
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enumData.mTryParts = PR_FALSE;
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done = !font.EnumerateFamilies(StretchEnumContext::EnumCallback, &enumData);
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@ -1683,7 +1689,7 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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StretchEnumContext enumData(this, aPresContext, aRenderingContext,
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aStretchDirection, targetSize, aStretchHint,
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aDesiredStretchSize, font.name);
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aDesiredStretchSize, font.name, glyphFound);
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enumData.mTryVariants = PR_FALSE;
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done = !font.EnumerateFamilies(StretchEnumContext::EnumCallback, &enumData);
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@ -1704,7 +1710,7 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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#endif
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StretchEnumContext enumData(this, aPresContext, aRenderingContext,
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aStretchDirection, targetSize, aStretchHint,
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aDesiredStretchSize, font.name);
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aDesiredStretchSize, font.name, glyphFound);
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enumData.mTryParts = !largeopOnly;
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font.EnumerateFamilies(StretchEnumContext::EnumCallback, &enumData);
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@ -1713,7 +1719,7 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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if (!maxWidth) {
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// Now, we know how we are going to draw the char. Update the member
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// variables accordingly.
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mDrawNormal = (mGlyph.font == -1);
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mDrawNormal = !glyphFound;
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mUnscaledAscent = aDesiredStretchSize.ascent;
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}
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@ -1725,7 +1731,9 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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(aDesiredStretchSize.ascent + aDesiredStretchSize.descent);
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if (!largeop || scale > 1.0) {
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// make the character match the desired height.
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mScaleY *= scale;
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if (!maxWidth) {
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mScaleY *= scale;
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}
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aDesiredStretchSize.ascent *= scale;
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aDesiredStretchSize.descent *= scale;
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}
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@ -1735,7 +1743,9 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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(aDesiredStretchSize.rightBearing - aDesiredStretchSize.leftBearing);
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if (!largeop || scale > 1.0) {
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// make the character match the desired width.
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mScaleX *= scale;
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if (!maxWidth) {
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mScaleX *= scale;
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}
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aDesiredStretchSize.leftBearing *= scale;
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aDesiredStretchSize.rightBearing *= scale;
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aDesiredStretchSize.width *= scale;
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@ -1745,7 +1755,7 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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// We do not have a char variant for this largeop in display mode, so we
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// apply a scale transform to the base char.
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if (mGlyph.font == -1 && largeop) {
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if (!glyphFound && largeop) {
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float scale;
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float largeopFactor = M_SQRT2;
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@ -1756,7 +1766,9 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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scale = (largeopFactor *
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(initialSize.rightBearing - initialSize.leftBearing)) /
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(aDesiredStretchSize.rightBearing - aDesiredStretchSize.leftBearing);
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mScaleX *= scale;
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if (!maxWidth) {
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mScaleX *= scale;
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}
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aDesiredStretchSize.leftBearing *= scale;
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aDesiredStretchSize.rightBearing *= scale;
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aDesiredStretchSize.width *= scale;
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@ -1773,7 +1785,9 @@ nsMathMLChar::StretchInternal(nsPresContext* aPresContext,
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scale = (largeopFactor *
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(initialSize.ascent + initialSize.descent)) /
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(aDesiredStretchSize.ascent + aDesiredStretchSize.descent);
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mScaleY *= scale;
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if (!maxWidth) {
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mScaleY *= scale;
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}
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aDesiredStretchSize.ascent *= scale;
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aDesiredStretchSize.descent *= scale;
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}
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@ -1795,9 +1809,8 @@ nsMathMLChar::Stretch(nsPresContext* aPresContext,
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NS_STRETCH_INTEGRAL)),
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"Unexpected stretch flags");
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// This will be updated if a better match than the base character is found
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mGlyph.font = -1;
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mDrawNormal = PR_TRUE;
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mScaleY = mScaleX = 1.0;
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mDirection = aStretchDirection;
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nsresult rv =
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StretchInternal(aPresContext, aRenderingContext, mDirection,
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