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Bug 430332. Lazily rebuild transformed-textruns, deferring rebuild until after the linebreaker has finished analysis. r=smontagu

This commit is contained in:
Robert O'Callahan 2008-11-26 11:44:05 +13:00
Родитель c5e50b0f49
Коммит 843e83d7e3
3 изменённых файлов: 35 добавлений и 109 удалений
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9
layout/generic/nsTextFrameThebes.cpp
Просмотреть файл

@ -714,6 +714,14 @@ public:
aCapitalize, mContext);
}
void Finish() {
if (mTextRun->GetFlags() & nsTextFrameUtils::TEXT_IS_TRANSFORMED) {
nsTransformedTextRun* transformedTextRun =
static_cast<nsTransformedTextRun*>(mTextRun);
transformedTextRun->FinishSettingProperties(mContext);
}
}
gfxTextRun* mTextRun;
gfxContext* mContext;
PRUint32 mOffsetIntoTextRun;
@ -1129,6 +1137,7 @@ void BuildTextRunsScanner::FlushFrames(PRBool aFlushLineBreaks, PRBool aSuppress
// TODO cause frames associated with the textrun to be reflowed, if they
// aren't being reflowed already!
}
mBreakSinks[i]->Finish();
}
mBreakSinks.Clear();
}

106
layout/generic/nsTextRunTransformations.cpp
Просмотреть файл

@ -72,7 +72,7 @@ nsTransformedTextRun::SetCapitalization(PRUint32 aStart, PRUint32 aLength,
memset(mCapitalize.Elements(), 0, GetLength()*sizeof(PRPackedBool));
}
memcpy(mCapitalize.Elements() + aStart, aCapitalization, aLength*sizeof(PRPackedBool));
mFactory->RebuildTextRun(this, aRefContext);
mNeedsRebuild = PR_TRUE;
}
PRBool
@ -82,76 +82,20 @@ nsTransformedTextRun::SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
{
PRBool changed = gfxTextRun::SetPotentialLineBreaks(aStart, aLength,
aBreakBefore, aRefContext);
mFactory->RebuildTextRun(this, aRefContext);
if (changed) {
mNeedsRebuild = PR_TRUE;
}
return changed;
}
PRBool
nsTransformedTextRun::SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRBool aLineBreakBefore, PRBool aLineBreakAfter,
gfxFloat* aAdvanceWidthDelta,
gfxContext* aRefContext)
{
nsTArray<PRUint32> newBreaks;
PRUint32 i;
PRBool changed = PR_FALSE;
for (i = 0; i < mLineBreaks.Length(); ++i) {
PRUint32 pos = mLineBreaks[i];
if (pos >= aStart)
break;
newBreaks.AppendElement(pos);
}
if (aLineBreakBefore != (i < mLineBreaks.Length() &&
mLineBreaks[i] == aStart)) {
changed = PR_TRUE;
}
if (aLineBreakBefore) {
nsTextFrameUtils::AppendLineBreakOffset(&newBreaks, aStart);
}
if (aLineBreakAfter != (i + 1 < mLineBreaks.Length() &&
mLineBreaks[i + 1] == aStart + aLength)) {
changed = PR_TRUE;
}
if (aLineBreakAfter) {
nsTextFrameUtils::AppendLineBreakOffset(&newBreaks, aStart + aLength);
}
for (; i < mLineBreaks.Length(); ++i) {
if (mLineBreaks[i] > aStart + aLength)
break;
changed = PR_TRUE;
}
if (!changed) {
if (aAdvanceWidthDelta) {
*aAdvanceWidthDelta = 0;
}
return PR_FALSE;
}
newBreaks.AppendElements(mLineBreaks.Elements() + i, mLineBreaks.Length() - i);
mLineBreaks.SwapElements(newBreaks);
gfxFloat currentAdvance = GetAdvanceWidth(aStart, aLength, nsnull);
mFactory->RebuildTextRun(this, aRefContext);
if (aAdvanceWidthDelta) {
*aAdvanceWidthDelta = GetAdvanceWidth(aStart, aLength, nsnull) - currentAdvance;
}
return PR_TRUE;
}
gfxTextRun*
nsTransformingTextRunFactory::MakeTextRun(const PRUnichar* aString, PRUint32 aLength,
const gfxTextRunFactory::Parameters* aParams,
gfxFontGroup* aFontGroup, PRUint32 aFlags,
nsStyleContext** aStyles, PRBool aOwnsFactory)
{
nsTransformedTextRun* textRun =
nsTransformedTextRun::Create(aParams, this, aFontGroup,
aString, aLength, aFlags, aStyles, aOwnsFactory);
if (!textRun)
return nsnull;
RebuildTextRun(textRun, aParams->mContext);
return textRun;
return nsTransformedTextRun::Create(aParams, this, aFontGroup,
aString, aLength, aFlags, aStyles, aOwnsFactory);
}
gfxTextRun*
@ -271,7 +215,7 @@ GetParametersForInner(nsTransformedTextRun* aTextRun, PRUint32* aFlags,
{
gfxTextRunFactory::Parameters params =
{ aRefContext, nsnull, nsnull,
nsnull, nsnull, aTextRun->GetAppUnitsPerDevUnit()
nsnull, 0, aTextRun->GetAppUnitsPerDevUnit()
};
*aFlags = aTextRun->GetFlags() & ~gfxFontGroup::TEXT_IS_PERSISTENT;
return params;
@ -313,17 +257,9 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
PRBool runIsLowercase = PR_FALSE;
nsAutoTArray<nsStyleContext*,50> styleArray;
nsAutoTArray<PRPackedBool,50> canBreakBeforeArray;
nsAutoTArray<PRUint32,10> lineBreakBeforeArray;
PRUint32 nextLineBreak = 0;
PRUint32 i;
for (i = 0; i <= length; ++i) {
if (nextLineBreak < aTextRun->mLineBreaks.Length() &&
aTextRun->mLineBreaks[nextLineBreak] == i) {
lineBreakBeforeArray.AppendElement(i - runStart);
++nextLineBreak;
}
PRBool isLowercase = PR_FALSE;
if (i < length) {
// Characters that aren't the start of a cluster are ignored here. They
@ -346,9 +282,7 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
nsAutoPtr<gfxTextRun> transformedChild;
gfxTextRunCache::AutoTextRun cachedChild;
gfxTextRun* child;
// Setup actual line break data for child (which may affect shaping)
innerParams.mInitialBreaks = lineBreakBeforeArray.Elements();
innerParams.mInitialBreakCount = lineBreakBeforeArray.Length();
if (runIsLowercase) {
transformedChild = uppercaseFactory.MakeTextRun(str + runStart, i - runStart,
&innerParams, smallFont, flags, styleArray.Elements(), PR_FALSE);
@ -372,10 +306,6 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
runStart = i;
styleArray.Clear();
canBreakBeforeArray.Clear();
lineBreakBeforeArray.Clear();
if (nextLineBreak > 0 && aTextRun->mLineBreaks[nextLineBreak - 1] == i) {
lineBreakBeforeArray.AppendElement(0);
}
}
if (i < length) {
@ -384,8 +314,6 @@ nsFontVariantTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
canBreakBeforeArray.AppendElement(aTextRun->CanBreakLineBefore(i));
}
}
NS_ASSERTION(nextLineBreak == aTextRun->mLineBreaks.Length(),
"lost track of line breaks somehow");
}
void
@ -404,8 +332,6 @@ nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
nsAutoTArray<PRPackedBool,50> charsToMergeArray;
nsAutoTArray<nsStyleContext*,50> styleArray;
nsAutoTArray<PRPackedBool,50> canBreakBeforeArray;
nsAutoTArray<PRUint32,10> lineBreakBeforeArray;
PRUint32 nextLineBreak = 0;
PRUint32 extraCharsCount = 0;
PRUint32 i;
@ -415,11 +341,6 @@ nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
charsToMergeArray.AppendElement(PR_FALSE);
styleArray.AppendElement(styles[i]);
canBreakBeforeArray.AppendElement(aTextRun->CanBreakLineBefore(i));
if (nextLineBreak < aTextRun->mLineBreaks.Length() &&
aTextRun->mLineBreaks[nextLineBreak] == i) {
lineBreakBeforeArray.AppendElement(i + extraCharsCount);
++nextLineBreak;
}
PRUint8 style = mAllUppercase ? NS_STYLE_TEXT_TRANSFORM_UPPERCASE
: styles[i]->GetStyleText()->mTextTransform;
@ -461,13 +382,6 @@ nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
canBreakBeforeArray.AppendElement(PR_FALSE);
}
}
if (nextLineBreak < aTextRun->mLineBreaks.Length() &&
aTextRun->mLineBreaks[nextLineBreak] == length) {
lineBreakBeforeArray.AppendElement(length + extraCharsCount);
++nextLineBreak;
}
NS_ASSERTION(nextLineBreak == aTextRun->mLineBreaks.Length(),
"lost track of line breaks somehow");
PRUint32 flags;
gfxTextRunFactory::Parameters innerParams =
@ -477,9 +391,7 @@ nsCaseTransformTextRunFactory::RebuildTextRun(nsTransformedTextRun* aTextRun,
nsAutoPtr<gfxTextRun> transformedChild;
gfxTextRunCache::AutoTextRun cachedChild;
gfxTextRun* child;
// Setup actual line break data for child (which may affect shaping)
innerParams.mInitialBreaks = lineBreakBeforeArray.Elements();
innerParams.mInitialBreakCount = lineBreakBeforeArray.Length();
if (mInnerTransformingTextRunFactory) {
transformedChild = mInnerTransformingTextRunFactory->MakeTextRun(
convertedString.BeginReading(), convertedString.Length(),

29
layout/generic/nsTextRunTransformations.h
Просмотреть файл

@ -113,22 +113,30 @@ public:
}
}
virtual void SetCapitalization(PRUint32 aStart, PRUint32 aLength,
PRPackedBool* aCapitalization,
gfxContext* aRefContext);
void SetCapitalization(PRUint32 aStart, PRUint32 aLength,
PRPackedBool* aCapitalization,
gfxContext* aRefContext);
virtual PRBool SetPotentialLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRPackedBool* aBreakBefore,
gfxContext* aRefContext);
virtual PRBool SetLineBreaks(PRUint32 aStart, PRUint32 aLength,
PRBool aLineBreakBefore, PRBool aLineBreakAfter,
gfxFloat* aAdvanceWidthDelta,
gfxContext* aRefContext);
/**
* Called after SetCapitalization and SetPotentialLineBreaks
* are done and before we request any data from the textrun. Also always
* called after a Create.
*/
void FinishSettingProperties(gfxContext* aRefContext)
{
if (mNeedsRebuild) {
mNeedsRebuild = PR_FALSE;
mFactory->RebuildTextRun(this, aRefContext);
}
}
nsTransformingTextRunFactory *mFactory;
nsTArray<PRUint32> mLineBreaks;
nsTArray<nsRefPtr<nsStyleContext> > mStyles;
nsTArray<PRPackedBool> mCapitalize;
PRPackedBool mOwnsFactory;
PRPackedBool mNeedsRebuild;
private:
nsTransformedTextRun(const gfxTextRunFactory::Parameters* aParams,
@ -138,15 +146,12 @@ private:
const PRUint32 aFlags, nsStyleContext** aStyles,
PRBool aOwnsFactory)
: gfxTextRun(aParams, aString, aLength, aFontGroup, aFlags, sizeof(nsTransformedTextRun)),
mFactory(aFactory), mOwnsFactory(aOwnsFactory)
mFactory(aFactory), mOwnsFactory(aOwnsFactory), mNeedsRebuild(PR_TRUE)
{
PRUint32 i;
for (i = 0; i < aLength; ++i) {
mStyles.AppendElement(aStyles[i]);
}
for (i = 0; i < aParams->mInitialBreakCount; ++i) {
mLineBreaks.AppendElement(aParams->mInitialBreaks[i]);
}
}
};