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Bug 384836. Avoid using a stale gfxContext, by not holding onto one in nsTransformedTextRun, passing in a gfxContext when required instead. r=pavlov,smontagu

This commit is contained in:
roc+@cs.cmu.edu 2007-06-25 21:25:00 -07:00
Родитель cd53599bad
Коммит 281b20dd55
5 изменённых файлов: 50 добавлений и 32 удалений
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6
gfx/thebes/public/gfxFont.h
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@ -589,7 +589,8 @@ public:
* breaks are the same as the old
*/
virtual PRBool SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRPackedBool *aBreakBefore);
PRPackedBool *aBreakBefore,
gfxContext *aRefContext);
/**
* Layout provides PropertyProvider objects. These allow detection of
@ -719,7 +720,8 @@ public:
*/
virtual PRBool SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRBool aLineBreakBefore, PRBool aLineBreakAfter,
gfxFloat *aAdvanceWidthDelta);
gfxFloat *aAdvanceWidthDelta,
gfxContext *aRefContext);
/**
* Finds the longest substring that will fit into the given width.

6
gfx/thebes/src/gfxFont.cpp
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@ -686,7 +686,8 @@ gfxTextRun::Clone(const gfxTextRunFactory::Parameters *aParams, const void *aTex
PRBool
gfxTextRun::SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRPackedBool *aBreakBefore)
PRPackedBool *aBreakBefore,
gfxContext *aRefContext)
{
NS_ASSERTION(aStart + aLength <= mCharacterCount, "Overflow");
@ -1416,7 +1417,8 @@ gfxTextRun::GetAdvanceWidth(PRUint32 aStart, PRUint32 aLength,
PRBool
gfxTextRun::SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRBool aLineBreakBefore, PRBool aLineBreakAfter,
gfxFloat *aAdvanceWidthDelta)
gfxFloat *aAdvanceWidthDelta,
gfxContext *aRefContext)
{
// Do nothing because our shaping does not currently take linebreaks into
// account. There is no change in advance width.

15
layout/generic/nsTextFrameThebes.cpp
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@ -910,20 +910,22 @@ public:
class BreakSink : public nsILineBreakSink {
public:
BreakSink(gfxTextRun* aTextRun, PRUint32 aOffsetIntoTextRun,
BreakSink(gfxTextRun* aTextRun, gfxContext* aContext, PRUint32 aOffsetIntoTextRun,
PRBool aExistingTextRun) :
mTextRun(aTextRun), mOffsetIntoTextRun(aOffsetIntoTextRun),
mTextRun(aTextRun), mContext(aContext),
mOffsetIntoTextRun(aOffsetIntoTextRun),
mChangedBreaks(PR_FALSE), mExistingTextRun(aExistingTextRun) {}
virtual void SetBreaks(PRUint32 aOffset, PRUint32 aLength,
PRPackedBool* aBreakBefore) {
if (mTextRun->SetPotentialLineBreaks(aOffset + mOffsetIntoTextRun, aLength,
aBreakBefore)) {
aBreakBefore, mContext)) {
mChangedBreaks = PR_TRUE;
}
}
gfxTextRun* mTextRun;
gfxContext* mContext;
PRUint32 mOffsetIntoTextRun;
PRPackedBool mChangedBreaks;
PRPackedBool mExistingTextRun;
@ -1821,7 +1823,8 @@ BuildTextRunsScanner::SetupBreakSinksForTextRun(gfxTextRun* aTextRun,
for (i = 0; i < mMappedFlows.Length(); ++i) {
MappedFlow* mappedFlow = &mMappedFlows[i];
nsAutoPtr<BreakSink>* breakSink = mBreakSinks.AppendElement(
new BreakSink(aTextRun, mappedFlow->mTransformedTextOffset, aIsExistingTextRun));
new BreakSink(aTextRun, mContext,
mappedFlow->mTransformedTextOffset, aIsExistingTextRun));
if (!breakSink || !*breakSink)
return;
PRUint32 offset = mappedFlow->mTransformedTextOffset;
@ -5566,10 +5569,12 @@ nsTextFrame::TrimTrailingWhiteSpace(nsPresContext* aPresContext,
}
}
gfxContext* ctx = NS_STATIC_CAST(gfxContext*,
aRC.GetNativeGraphicData(nsIRenderingContext::NATIVE_THEBES_CONTEXT));
gfxFloat advanceDelta;
mTextRun->SetLineBreaks(trimmedStart, trimmedEnd - trimmedStart,
(GetStateBits() & TEXT_START_OF_LINE) != 0, PR_TRUE,
&advanceDelta);
&advanceDelta, ctx);
// aDeltaWidth is *subtracted* from our width.
// If advanceDelta is positive then setting the line break made us longer,

45
layout/generic/nsTextRunTransformations.cpp
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@ -61,8 +61,7 @@ public:
const PRUint32 aFlags, nsStyleContext** aStyles,
PRBool aOwnsFactory)
: gfxTextRun(aParams, aString, aLength, aFontGroup, aFlags),
mFactory(aFactory), mRefContext(aParams->mContext),
mOwnsFactory(aOwnsFactory)
mFactory(aFactory), mOwnsFactory(aOwnsFactory)
{
PRUint32 i;
for (i = 0; i < aLength; ++i) {
@ -80,18 +79,20 @@ public:
}
virtual PRBool SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRPackedBool* aBreakBefore)
PRPackedBool* aBreakBefore,
gfxContext* aRefContext)
{
PRBool changed = gfxTextRun::SetPotentialLineBreaks(aStart, aLength, aBreakBefore);
mFactory->RebuildTextRun(this);
PRBool changed = gfxTextRun::SetPotentialLineBreaks(aStart, aLength,
aBreakBefore, aRefContext);
mFactory->RebuildTextRun(this, aRefContext);
return changed;
}
virtual PRBool SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRBool aLineBreakBefore, PRBool aLineBreakAfter,
gfxFloat* aAdvanceWidthDelta);
gfxFloat* aAdvanceWidthDelta,
gfxContext* aRefContext);
nsTransformingTextRunFactory *mFactory;
nsRefPtr<gfxContext> mRefContext;
nsTArray<PRUint32> mLineBreaks;
nsTArray<nsRefPtr<nsStyleContext> > mStyles;
PRPackedBool mOwnsFactory;
@ -100,7 +101,8 @@ public:
PRBool
nsTransformedTextRun::SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRBool aLineBreakBefore, PRBool aLineBreakAfter,
gfxFloat* aAdvanceWidthDelta)
gfxFloat* aAdvanceWidthDelta,
gfxContext* aRefContext)
{
nsTArray<PRUint32> newBreaks;
PRUint32 i;
@ -141,7 +143,7 @@ nsTransformedTextRun::SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
mLineBreaks.SwapElements(newBreaks);
gfxFloat currentAdvance = GetAdvanceWidth(aStart, aLength, nsnull);
mFactory->RebuildTextRun(this);
mFactory->RebuildTextRun(this, aRefContext);
if (aAdvanceWidthDelta) {
*aAdvanceWidthDelta = GetAdvanceWidth(aStart, aLength, nsnull) - currentAdvance;
}
@ -160,7 +162,7 @@ nsTransformingTextRunFactory::MakeTextRun(const PRUnichar* aString, PRUint32 aLe
if (!textRun)
return nsnull;
RebuildTextRun(textRun);
RebuildTextRun(textRun, aParams->mContext);
return textRun;
}
@ -310,10 +312,11 @@ MergeCharactersInTextRun(gfxTextRun* aDest, gfxTextRun* aSrc,
}
static gfxTextRunFactory::Parameters
GetParametersForInner(nsTransformedTextRun* aTextRun, PRUint32* aFlags)
GetParametersForInner(nsTransformedTextRun* aTextRun, PRUint32* aFlags,
gfxContext* aRefContext)
{
gfxTextRunFactory::Parameters params =
{ aTextRun->mRefContext, nsnull, nsnull,
{ aRefContext, nsnull, nsnull,
nsnull, nsnull, PRUint32(aTextRun->GetAppUnitsPerDevUnit())
};
*aFlags = aTextRun->GetFlags() & ~gfxFontGroup::TEXT_IS_PERSISTENT;
@ -321,7 +324,8 @@ GetParametersForInner(nsTransformedTextRun* aTextRun, PRUint32* aFlags)
}
void
nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
gfxContext* aRefContext)
{
nsICaseConversion* converter = nsTextTransformer::GetCaseConv();
if (!converter)
@ -335,7 +339,8 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
return;
PRUint32 flags;
gfxTextRunFactory::Parameters innerParams = GetParametersForInner(aTextRun, &flags);
gfxTextRunFactory::Parameters innerParams =
GetParametersForInner(aTextRun, &flags, aRefContext);
// The text outlives the child and inner textruns
flags |= gfxFontGroup::TEXT_IS_PERSISTENT;
@ -404,7 +409,8 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
// (and also child will be shaped appropriately)
NS_ASSERTION(canBreakBeforeArray.Length() == i - runStart,
"lost some break-before values?");
child->SetPotentialLineBreaks(0, canBreakBeforeArray.Length(), canBreakBeforeArray.Elements());
child->SetPotentialLineBreaks(0, canBreakBeforeArray.Length(),
canBreakBeforeArray.Elements(), aRefContext);
AppendTextRun(aTextRun, child, runStart);
runStart = i;
@ -427,7 +433,8 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
}
void
nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
gfxContext* aRefContext)
{
nsICaseConversion* converter = nsTextTransformer::GetCaseConv();
if (!converter)
@ -507,7 +514,8 @@ nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
"lost track of line breaks somehow");
PRUint32 flags;
gfxTextRunFactory::Parameters innerParams = GetParametersForInner(aTextRun, &flags);
gfxTextRunFactory::Parameters innerParams =
GetParametersForInner(aTextRun, &flags, aRefContext);
gfxFontGroup* fontGroup = aTextRun->GetFontGroup();
nsAutoPtr<gfxTextRun> child;
@ -531,7 +539,8 @@ nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun)
// (and also child will be shaped appropriately)
NS_ASSERTION(convertedString.Length() == canBreakBeforeArray.Length(),
"Dropped characters or break-before values somewhere!");
child->SetPotentialLineBreaks(0, canBreakBeforeArray.Length(), canBreakBeforeArray.Elements());
child->SetPotentialLineBreaks(0, canBreakBeforeArray.Length(),
canBreakBeforeArray.Elements(), aRefContext);
// Now merge multiple characters into one multi-glyph character as required
MergeCharactersInTextRun(aTextRun, child, charsToMergeArray.Elements());
}

6
layout/generic/nsTextRunTransformations.h
Просмотреть файл

@ -57,7 +57,7 @@ public:
gfxFontGroup* aFontGroup, PRUint32 aFlags,
nsStyleContext** aStyles, PRBool aOwnsFactory = PR_TRUE);
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun) = 0;
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun, gfxContext* aRefContext) = 0;
};
/**
@ -66,7 +66,7 @@ public:
*/
class nsFontVariantTextRunFactory : public nsTransformingTextRunFactory {
public:
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun);
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun, gfxContext* aRefContext);
};
/**
@ -87,7 +87,7 @@ public:
: mInnerTransformingTextRunFactory(aInnerTransformingTextRunFactory),
mAllUppercase(aAllUppercase) {}
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun);
virtual void RebuildTextRun(nsTransformedTextRun* aTextRun, gfxContext* aRefContext);
protected:
nsAutoPtr<nsTransformingTextRunFactory> mInnerTransformingTextRunFactory;