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Bug 1097894: if the embedding level of a frame is unset, get the direction from style, r=dholbert

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This commit is contained in:
Simon Montagu 2014-11-20 12:45:22 +02:00
parent a5e6b6466d
commit 1c01b9709d
1 changed files with 12 additions and 1 deletions
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13
layout/generic/nsFrame.cpp
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@ -5900,7 +5900,18 @@ nsFrame::GetPointFromOffset(int32_t inOffset, nsPoint* outPoint)
if (newContent){
int32_t newOffset = newContent->IndexOf(mContent);
bool isRTL = (NS_GET_EMBEDDING_LEVEL(this) & 1) == 1;
// Find the direction of the frame from the EmbeddingLevelProperty,
// which is the resolved bidi level set in
// nsBidiPresUtils::ResolveParagraph (odd levels = right-to-left).
// If the embedding level isn't set, just use the CSS direction
// property.
bool hasEmbeddingLevel;
nsBidiLevel embeddingLevel =
NS_PTR_TO_INT32(Properties().Get(nsIFrame::EmbeddingLevelProperty(),
&hasEmbeddingLevel));
bool isRTL = hasEmbeddingLevel
? (embeddingLevel & 1) == 1
: StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
if ((!isRTL && inOffset > newOffset) ||
(isRTL && inOffset <= newOffset)) {
pt = contentRect.TopRight();