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bug 275672 : Right-most character (that means end of line) should not have extra space for justification patch by masayuki@d-toybox.com, r+sr=roc

Browse Source 
git-svn-id: svn://10.0.0.236/trunk@167680 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
jshin%mailaps.org 2005-01-13 19:21:18 +00:00
parent a1868f9c24
commit 082ef42cc3
5 changed files with 86 additions and 38 deletions
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4
mozilla/layout/generic/nsFrame.cpp
View File

@ -2146,9 +2146,11 @@ nsFrame::AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace)
NS_IMETHODIMP
nsFrame::TrimTrailingWhiteSpace(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nscoord& aDeltaWidth)
nscoord& aDeltaWidth,
PRBool& aLastCharIsJustifiable)
{
aDeltaWidth = 0;
aLastCharIsJustifiable = PR_FALSE;
return NS_OK;
}

3
mozilla/layout/generic/nsFrame.h
View File

@ -295,7 +295,8 @@ public:
NS_IMETHOD AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace);
NS_IMETHOD TrimTrailingWhiteSpace(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nscoord& aDeltaWidth);
nscoord& aDeltaWidth,
PRBool& aLastCharIsJustifiable);
// Selection Methods
// XXX Doc me... (in nsIFrame.h puhleeze)

3
mozilla/layout/generic/nsIFrame.h
View File

@ -965,7 +965,8 @@ public:
// whitespace before justification.
NS_IMETHOD TrimTrailingWhiteSpace(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nscoord& aDeltaWidth) = 0;
nscoord& aDeltaWidth,
PRBool& aLastCharIsJustifiable) = 0;
/**
* Accessor functions to get/set the associated view object

12
mozilla/layout/generic/nsLineLayout.cpp
View File

@ -2613,9 +2613,11 @@ nsLineLayout::TrimTrailingWhiteSpaceIn(PerSpanData* psd,
}
else if (pfd->GetFlag(PFD_ISNONEMPTYTEXTFRAME)) {
nscoord deltaWidth = 0;
PRBool lastCharIsJustifiable = PR_FALSE;
pfd->mFrame->TrimTrailingWhiteSpace(mPresContext,
*mBlockReflowState->rendContext,
deltaWidth);
deltaWidth,
lastCharIsJustifiable);
#ifdef NOISY_TRIM
nsFrame::ListTag(stdout, (psd == mRootSpan
? mBlockReflowState->frame
@ -2624,11 +2626,11 @@ nsLineLayout::TrimTrailingWhiteSpaceIn(PerSpanData* psd,
nsFrame::ListTag(stdout, pfd->mFrame);
printf(" returned %d\n", deltaWidth);
#endif
if (deltaWidth) {
if (pfd->mJustificationNumSpaces > 0) {
pfd->mJustificationNumSpaces--;
}
if (lastCharIsJustifiable && pfd->mJustificationNumSpaces > 0) {
pfd->mJustificationNumSpaces--;
}
if (deltaWidth) {
pfd->mBounds.width -= deltaWidth;
if (0 == pfd->mBounds.width) {
pfd->mMaxElementWidth = 0;

102
mozilla/layout/generic/nsTextFrame.cpp
View File

@ -497,7 +497,8 @@ public:
NS_IMETHOD AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace);
NS_IMETHOD TrimTrailingWhiteSpace(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nscoord& aDeltaWidth);
nscoord& aDeltaWidth,
PRBool& aLastCharIsJustifiable);
struct TextStyle {
const nsStyleFont* mFont;
@ -687,7 +688,7 @@ public:
nsStyleContext* aStyleContext,
nsPresContext* aPresContext,
TextPaintStyle& aStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nscoord aX, nscoord aY,
nscoord aWidth,
SelectionDetails *aDetails = nsnull);
@ -696,6 +697,7 @@ public:
TextStyle& aStyle,
PRUnichar* aWord,
PRInt32 aWordLength,
PRBool aIsEndOfFrame,
nsTextDimensions* aDimensionsResult);
PRUint32 EstimateNumChars(PRUint32 aAvailableWidth,
@ -710,7 +712,7 @@ public:
void GetTextDimensions(nsIRenderingContext& aRenderingContext,
TextStyle& aStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nsTextDimensions* aDimensionsResult);
//this returns the index into the PAINTBUFFER of the x coord aWidth(based on 0 as far left)
@ -718,7 +720,7 @@ public:
//meaningful to content yet. use index buffer from prepareunicodestring to find the content offset.
PRInt32 GetLengthSlowly(nsIRenderingContext& aRenderingContext,
TextStyle& aStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nscoord aWidth);
PRBool IsTextInSelection(nsPresContext* aPresContext,
@ -785,7 +787,7 @@ protected:
//factored out method for GetTextDimensions and getlengthslowly. if aGetTextDimensions is non-zero number then measure to the width field and return the length. else shove total dimensions into result
PRInt32 GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
TextStyle& aStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nsTextDimensions* aDimensionsResult,
PRBool aGetTextDimensions/* true=get dimensions false = return length up to aDimensionsResult->width size*/);
nsresult GetContentAndOffsetsForSelection(nsPresContext* aPresContext,nsIContent **aContent, PRInt32 *aOffset, PRInt32 *aLength);
@ -953,6 +955,7 @@ public:
PRBool First();
PRBool Next();
PRBool IsDone();
PRBool IsLast();
PRUnichar * CurrentTextUnicharPtr();
char * CurrentTextCStrPtr();
@ -1160,6 +1163,12 @@ DrawSelectionIterator::Next()
return PR_TRUE;
}
PRBool
DrawSelectionIterator::IsLast()
{
return mDone || !mInit || mCurrentIdx + mCurrentLength >= mLength;
}
PRBool
DrawSelectionIterator::IsDone()
{
@ -1182,7 +1191,7 @@ DrawSelectionIterator::CurrentTextCStrPtr()
PRUint32
DrawSelectionIterator::CurrentLength()
{
return mCurrentLength;
return mCurrentLength;
}
nsTextFrame::TextPaintStyle &
@ -1280,6 +1289,8 @@ DrawSelectionIterator::IsBeforeOrAfter()
#define TEXT_WHITESPACE_FLAGS 0x00300000
#define TEXT_IS_END_OF_LINE 0x00400000
//----------------------------------------------------------------------
nsresult
@ -1534,6 +1545,11 @@ nsTextFrame::IsJustifiableCharacter(PRUnichar aChar, PRBool aLangIsCJ)
return PR_FALSE;
}
inline PRBool IsEndOfLine(nsFrameState aState)
{
return (aState & TEXT_IS_END_OF_LINE) ? PR_TRUE : PR_FALSE;
}
/**
* Prepare the text in the content for rendering. If aIndexes is not nsnull
* then fill in aIndexes's with the mapping from the original input to
@ -1743,7 +1759,10 @@ nsTextFrame::PrepareUnicodeText(nsTextTransformer& aTX,
if (aJustifiableCharCount && textBuffer) {
PRBool isCJ = IsChineseJapaneseLangGroup();
PRIntn numJustifiableCharacter = 0;
for (PRInt32 i = 0; i < textLength; i++) {
PRInt32 justifiableRange = textLength;
if (IsEndOfLine(mState))
justifiableRange--;
for (PRInt32 i = 0; i < justifiableRange; i++) {
if (IsJustifiableCharacter(textBuffer->mBuffer[i], isCJ))
numJustifiableCharacter++;
}
@ -2612,10 +2631,14 @@ nsTextFrame::GetPositionSlowly(nsPresContext* aPresContext,
#ifdef IBMBIDI
if (isOddLevel)
aOffset = mContentOffset+textLength-GetLengthSlowly(*aRendContext, ts,paintBuffer.mBuffer,textLength,adjustedX);
aOffset = mContentOffset + textLength -
GetLengthSlowly(*aRendContext, ts, paintBuffer.mBuffer,
textLength, PR_TRUE, adjustedX);
else
#endif
aOffset = mContentOffset+GetLengthSlowly(*aRendContext, ts,paintBuffer.mBuffer,textLength,adjustedX);
aOffset = mContentOffset +
GetLengthSlowly(*aRendContext, ts,paintBuffer.mBuffer,
textLength, PR_TRUE, adjustedX);
PRInt32 i;
PRInt32* ip = indexBuffer.mBuffer;
for (i = 0;i <= mContentLength; i ++){
@ -2638,7 +2661,7 @@ nsTextFrame::RenderString(nsIRenderingContext& aRenderingContext,
nsStyleContext* aStyleContext,
nsPresContext* aPresContext,
TextPaintStyle& aTextStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nscoord aX, nscoord aY,
nscoord aWidth,
SelectionDetails *aDetails /*=nsnull*/)
@ -2656,6 +2679,7 @@ nsTextFrame::RenderString(nsIRenderingContext& aRenderingContext,
(aTextStyle.mNumJustifiableCharacterReceivingExtraJot != 0 || aTextStyle.mExtraSpacePerJustifiableCharacter != 0);
PRBool isCJ = IsChineseJapaneseLangGroup();
PRBool isEndOfLine = aIsEndOfFrame && IsEndOfLine(mState);
//German 0x00df might expand to "SS", but no need to count it for speed reason
if (aTextStyle.mSmallCaps) {
@ -2746,7 +2770,8 @@ nsTextFrame::RenderString(nsIRenderingContext& aRenderingContext,
}
nextFont = aTextStyle.mNormalFont;
}
if (justifying && IsJustifiableCharacter(ch, isCJ)) {
if (justifying && (!isEndOfLine || aLength > 0)
&& IsJustifiableCharacter(ch, isCJ)) {
glyphWidth += aTextStyle.mExtraSpacePerJustifiableCharacter;
if ((PRUint32)--aTextStyle.mNumJustifiableCharacterToRender
< (PRUint32)aTextStyle.mNumJustifiableCharacterReceivingExtraJot) {
@ -2809,11 +2834,12 @@ nsTextFrame::MeasureSmallCapsText(const nsHTMLReflowState& aReflowState,
TextStyle& aTextStyle,
PRUnichar* aWord,
PRInt32 aWordLength,
PRBool aIsEndOfFrame,
nsTextDimensions* aDimensionsResult)
{
nsIRenderingContext& rc = *aReflowState.rendContext;
aDimensionsResult->Clear();
GetTextDimensions(rc, aTextStyle, aWord, aWordLength, aDimensionsResult);
GetTextDimensions(rc, aTextStyle, aWord, aWordLength, aIsEndOfFrame, aDimensionsResult);
if (aTextStyle.mLastFont != aTextStyle.mNormalFont) {
rc.SetFont(aTextStyle.mNormalFont);
aTextStyle.mLastFont = aTextStyle.mNormalFont;
@ -2824,7 +2850,7 @@ nsTextFrame::MeasureSmallCapsText(const nsHTMLReflowState& aReflowState,
PRInt32
nsTextFrame::GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
TextStyle& aStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nsTextDimensions* aDimensionsResult,
PRBool aGetTextDimensions/* true=get dimensions false = return length up to aDimensionsResult.width size*/)
{
@ -2842,6 +2868,7 @@ nsTextFrame::GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
PRBool justifying = aStyle.mJustifying &&
(aStyle.mNumJustifiableCharacterReceivingExtraJot != 0 || aStyle.mExtraSpacePerJustifiableCharacter != 0);
PRBool isCJ = IsChineseJapaneseLangGroup();
PRBool isEndOfLine = aIsEndOfFrame && IsEndOfLine(mState);
while (--length >= 0) {
PRUnichar ch = *inBuffer++;
@ -2874,7 +2901,8 @@ nsTextFrame::GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
aRenderingContext.GetTextDimensions(&ch, (PRUint32)1, glyphDimensions);
glyphDimensions.width += aStyle.mLetterSpacing;
}
if (justifying && IsJustifiableCharacter(ch, isCJ)) {
if (justifying && (!isEndOfLine || length > 0)
&& IsJustifiableCharacter(ch, isCJ)) {
glyphDimensions.width += aStyle.mExtraSpacePerJustifiableCharacter;
if ((PRUint32)--aStyle.mNumJustifiableCharacterToMeasure
< (PRUint32)aStyle.mNumJustifiableCharacterReceivingExtraJot) {
@ -2901,21 +2929,23 @@ nsTextFrame::GetTextDimensionsOrLength(nsIRenderingContext& aRenderingContext,
void
nsTextFrame::GetTextDimensions(nsIRenderingContext& aRenderingContext,
TextStyle& aTextStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nsTextDimensions* aDimensionsResult)
{
GetTextDimensionsOrLength(aRenderingContext,aTextStyle,aBuffer,aLength,aDimensionsResult,PR_TRUE);
GetTextDimensionsOrLength(aRenderingContext,aTextStyle,
aBuffer,aLength,aIsEndOfFrame,aDimensionsResult,PR_TRUE);
}
PRInt32
nsTextFrame::GetLengthSlowly(nsIRenderingContext& aRenderingContext,
TextStyle& aStyle,
PRUnichar* aBuffer, PRInt32 aLength,
PRUnichar* aBuffer, PRInt32 aLength, PRBool aIsEndOfFrame,
nscoord aWidth)
{
nsTextDimensions dimensions;
dimensions.width = aWidth;
return GetTextDimensionsOrLength(aRenderingContext,aStyle,aBuffer,aLength,&dimensions,PR_FALSE);
return GetTextDimensionsOrLength(aRenderingContext,aStyle,
aBuffer,aLength,aIsEndOfFrame,&dimensions,PR_FALSE);
}
void
@ -2943,7 +2973,7 @@ nsTextFrame::ComputeExtraJustificationSpacing(nsIRenderingContext& aRenderingCon
aTextStyle.mExtraSpacePerJustifiableCharacter = 0;
aTextStyle.mNumJustifiableCharacterReceivingExtraJot = 0;
GetTextDimensions(aRenderingContext, aTextStyle, aBuffer, aLength, &trueDimensions);
GetTextDimensions(aRenderingContext, aTextStyle, aBuffer, aLength, PR_TRUE, &trueDimensions);
aTextStyle.mNumJustifiableCharacterToMeasure = aNumJustifiableCharacter;
aTextStyle.mNumJustifiableCharacterToRender = aNumJustifiableCharacter;
@ -3034,7 +3064,7 @@ nsTextFrame::PaintTextSlowly(nsPresContext* aPresContext,
// simplest rendering approach
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
RenderString(aRenderingContext, aStyleContext, aPresContext, aTextStyle,
text, textLength, dx, dy, width);
text, textLength, PR_TRUE, dx, dy, width);
}
else
{
@ -3082,7 +3112,9 @@ nsTextFrame::PaintTextSlowly(nsPresContext* aPresContext,
nscolor currentFGColor = iter.CurrentForeGroundColor();
nscolor currentBKColor;
PRBool isCurrentBKColorTransparent;
GetTextDimensions(aRenderingContext,aTextStyle,currenttext, (PRInt32)currentlength,&newDimensions);
PRBool isEndOfFrame = iter.IsLast();
GetTextDimensions(aRenderingContext, aTextStyle, currenttext,
(PRInt32)currentlength, isEndOfFrame, &newDimensions);
if (newDimensions.width)
{
if (iter.CurrentBackGroundColor(currentBKColor, &isCurrentBKColorTransparent))
@ -3098,13 +3130,13 @@ nsTextFrame::PaintTextSlowly(nsPresContext* aPresContext,
if (isPaginated && !iter.IsBeforeOrAfter()) {
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor, canDarkenColor));
RenderString(aRenderingContext, aStyleContext, aPresContext,
aTextStyle, currenttext, currentlength,
aTextStyle, currenttext, currentlength, isEndOfFrame,
currentX, dy, width, details);
} else if (!isPaginated) {
aRenderingContext.SetColor(nsCSSRendering::TransformColor(currentFGColor, canDarkenColor));
RenderString(aRenderingContext,aStyleContext, aPresContext,
aTextStyle, currenttext, currentlength, currentX,
dy, width, details);
aTextStyle, currenttext, currentlength, isEndOfFrame,
currentX, dy, width, details);
}
// increment twips X start but remember to get ready for
@ -3118,7 +3150,7 @@ nsTextFrame::PaintTextSlowly(nsPresContext* aPresContext,
{
aRenderingContext.SetColor(nsCSSRendering::TransformColor(aTextStyle.mColor->mColor,canDarkenColor));
RenderString(aRenderingContext, aStyleContext, aPresContext,
aTextStyle, text, PRUint32(textLength),
aTextStyle, text, PRUint32(textLength), PR_TRUE,
dx, dy, width, details);
}
sdptr = details;
@ -3821,7 +3853,8 @@ nsTextFrame::GetPointFromOffset(nsPresContext* aPresContext,
if (ts.mSmallCaps || (0 != ts.mWordSpacing) || (0 != ts.mLetterSpacing) || ts.mJustifying)
{
nsTextDimensions dimensions;
GetTextDimensions(*inRendContext, ts, paintBuffer.mBuffer, hitLength, &dimensions);
GetTextDimensions(*inRendContext, ts, paintBuffer.mBuffer, hitLength,
textLength == hitLength, &dimensions);
width = dimensions.width;
}
else
@ -4847,7 +4880,7 @@ nsTextFrame::MeasureText(nsPresContext* aPresContext,
}
else {
if (aTs.mSmallCaps) {
MeasureSmallCapsText(aReflowState, aTs, bp2, wordLen, &dimensions);
MeasureSmallCapsText(aReflowState, aTs, bp2, wordLen, PR_FALSE, &dimensions);
}
else {
// Measure just the one word
@ -5128,7 +5161,7 @@ nsTextFrame::MeasureText(nsPresContext* aPresContext,
}
else if (aTs.mSmallCaps) {
MeasureSmallCapsText(aReflowState, aTs, pWordBuf,
lastWordLen, &lastWordDimensions);
lastWordLen, PR_FALSE, &lastWordDimensions);
}
else {
aReflowState.rendContext->GetTextDimensions(pWordBuf, lastWordLen, lastWordDimensions);
@ -5244,6 +5277,8 @@ nsTextFrame::Reflow(nsPresContext* aPresContext,
aReflowState.availableWidth, aReflowState.availableHeight);
#endif
mState &= ~TEXT_IS_END_OF_LINE;
// XXX If there's no line layout, we shouldn't even have created this
// frame. This may happen if, for example, this is text inside a table
// but not inside a cell. For now, just don't reflow.
@ -5577,8 +5612,12 @@ nsTextFrame::AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace)
NS_IMETHODIMP
nsTextFrame::TrimTrailingWhiteSpace(nsPresContext* aPresContext,
nsIRenderingContext& aRC,
nscoord& aDeltaWidth)
nscoord& aDeltaWidth,
PRBool& aLastCharIsJustifiable)
{
aLastCharIsJustifiable = PR_FALSE;
mState |= TEXT_IS_END_OF_LINE;
// in some situation (for instance, in wrapping mode, last space will not
// be added to total width if it exceed maxwidth), this flag will be set
// and we shouldn't trim non-added space
@ -5616,6 +5655,9 @@ nsTextFrame::TrimTrailingWhiteSpace(nsPresContext* aPresContext,
if (eStyleUnit_Coord == unit) {
dw += textStyle->mLetterSpacing.GetCoordValue();
}
aLastCharIsJustifiable = PR_TRUE;
} else if (IsJustifiableCharacter(ch, IsChineseJapaneseLangGroup())) {
aLastCharIsJustifiable = PR_TRUE;
}
}
}
@ -5852,7 +5894,7 @@ nsTextFrame::ComputeWordFragmentDimensions(nsPresContext* aPresContext,
TextStyle ts(aLineLayout.mPresContext, rc, sc);
if (ts.mSmallCaps) {
MeasureSmallCapsText(aReflowState, ts, bp, wordLen, &dimensions);
MeasureSmallCapsText(aReflowState, ts, bp, wordLen, PR_FALSE, &dimensions);
}
else {
rc.GetTextDimensions(bp, wordLen, dimensions);