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Bug 546530. Bound search for previous cluster start. r=smontagu

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--HG--
extra : rebase_source : 5b7bca2777b5cfc5495fc9d339eaf0fbe1ff9a64
This commit is contained in:
Robert O'Callahan 2010-02-19 14:30:43 +13:00
parent 7f57711ea0
commit ddd804576e
1 changed files with 11 additions and 10 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

21
layout/generic/nsTextFrameThebes.cpp
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@ -2344,10 +2344,10 @@ PropertyProvider::ComputeJustifiableCharacters(PRInt32 aOffset, PRInt32 aLength)
/**
* Finds the offset of the first character of the cluster containing aPos
*/
static void FindClusterStart(gfxTextRun* aTextRun,
static void FindClusterStart(gfxTextRun* aTextRun, PRInt32 aOriginalStart,
gfxSkipCharsIterator* aPos)
{
while (aPos->GetOriginalOffset() > 0) {
while (aPos->GetOriginalOffset() > aOriginalStart) {
if (aPos->IsOriginalCharSkipped() ||
aTextRun->IsClusterStart(aPos->GetSkippedOffset())) {
break;
@ -2464,13 +2464,14 @@ PropertyProvider::GetSpacingInternal(PRUint32 aStart, PRUint32 aLength,
while (run.NextRun()) {
PRInt32 i;
gfxSkipCharsIterator iter = run.GetPos();
PRInt32 runOriginalOffset = run.GetOriginalOffset();
for (i = 0; i < run.GetRunLength(); ++i) {
PRInt32 originalOffset = run.GetOriginalOffset() + i;
if (IsJustifiableCharacter(mFrag, originalOffset, isCJK)) {
iter.SetOriginalOffset(originalOffset);
FindClusterStart(mTextRun, &iter);
PRInt32 iterOriginalOffset = runOriginalOffset + i;
if (IsJustifiableCharacter(mFrag, iterOriginalOffset, isCJK)) {
iter.SetOriginalOffset(iterOriginalOffset);
FindClusterStart(mTextRun, runOriginalOffset, &iter);
PRUint32 clusterFirstChar = iter.GetSkippedOffset();
FindClusterEnd(mTextRun, run.GetOriginalOffset() + run.GetRunLength(), &iter);
FindClusterEnd(mTextRun, runOriginalOffset + run.GetRunLength(), &iter);
PRUint32 clusterLastChar = iter.GetSkippedOffset();
// Only apply justification to characters before justificationEnd
if (clusterFirstChar >= justificationStart.GetSkippedOffset() &&
@ -5065,7 +5066,7 @@ nsTextFrame::SetSelectedRange(PRUint32 aStart,
PRBool anySelected = PR_FALSE;
nsTextFrame* f = this;
while (f && f->GetContentEnd() <= aStart) {
while (f && f->GetContentEnd() <= PRInt32(aStart)) {
if (f->GetStateBits() & NS_FRAME_SELECTED_CONTENT) {
anySelected = PR_TRUE;
}
@ -5073,7 +5074,7 @@ nsTextFrame::SetSelectedRange(PRUint32 aStart,
}
nsPresContext* presContext = PresContext();
while (f && f->GetContentOffset() < aEnd) {
while (f && f->GetContentOffset() < PRInt32(aEnd)) {
if (aSelected) {
f->AddStateBits(NS_FRAME_SELECTED_CONTENT);
anySelected = PR_TRUE;
@ -5168,7 +5169,7 @@ nsTextFrame::GetPointFromOffset(PRInt32 inOffset,
!iter.IsOriginalCharSkipped() &&
!mTextRun->IsClusterStart(iter.GetSkippedOffset())) {
NS_WARNING("GetPointFromOffset called for non-cluster boundary");
FindClusterStart(mTextRun, &iter);
FindClusterStart(mTextRun, trimmedOffset, &iter);
}
gfxFloat advanceWidth =