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Bug 1134744 - Fix baseline for form controls when line is inverted relative to block dir. r=smontagu

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This commit is contained in:
Jonathan Kew 2015-03-03 12:25:17 +00:00
parent e673083ef6
commit 4c781f24a6
1 changed files with 7 additions and 3 deletions
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10
layout/forms/nsFormControlFrame.cpp
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@ -70,9 +70,13 @@ nsFormControlFrame::GetLogicalBaseline(WritingMode aWritingMode) const
NS_ASSERTION(!NS_SUBTREE_DIRTY(this),
"frame must not be dirty");
// Treat radio buttons and checkboxes as having an intrinsic baseline
// at the bottom of the control (use the bottom content edge rather
// than the bottom margin edge).
return BSize(aWritingMode) -
// at the block-end of the control (use the block-end content edge rather
// than the margin edge).
// For "inverted" lines (typically in writing-mode:vertical-lr), use the
// block-start end instead.
return aWritingMode.IsLineInverted()
? GetLogicalUsedBorderAndPadding(aWritingMode).BStart(aWritingMode)
: BSize(aWritingMode) -
GetLogicalUsedBorderAndPadding(aWritingMode).BEnd(aWritingMode);
}